[PATCH v4 00/18] Add static_call()

[PATCH v4 00/18] Add static_call()

[Peter Zijlstra]

static_call(), is the idea of static_branch() applied to indirect function
calls. Remove a data load (indirection) by modifying the text.

The inline implementation still relies on objtool to generate the
.static_call_sites section, mostly because this is a natural place for x86_64
and works for both GCC and LLVM.  Other architectures can pick other means
if/when they implement the inline patching. The out-of-line (aka. trampoline)
variant doesn't require this.

Patches go on top of tip/objtool/core.

Patches can also be found here:

  git://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue.git x86/static_call

Changes since the last time:

 - Fixed the inline variant; the previous version relied on the section of
   symbols to detect the static call sites, but undefined symbols do not
   have a section, so it basically ended up not patching many sites. IOW
   inline mostly behaved in the out-of-line variant.

 - Fixed an issue with modules

 - Clarified static_cond_call() has 'void' return.

 - Clarified DEFINE_STATIC_COND_CALL() (ab)use.

 - Tracing no longer adds an indirect call for !HAVE_STATIC_CALL

[PATCH v4 01/18] notifier: Fix broken error handling pattern

[Peter Zijlstra]

The current notifiers have the following error handling pattern all
over the place:

	int err, nr;

	err = __foo_notifier_call_chain(&chain, val_up, v, -1, &nr);
	if (err & NOTIFIER_STOP_MASK)
		__foo_notifier_call_chain(&chain, val_down, v, nr-1, NULL)

And aside from the endless repetition thereof, it is broken. Consider
blocking notifiers; both calls take and drop the rwsem, this means
that the notifier list can change in between the two calls, making @nr
meaningless.

Fix this by replacing all the __foo_notifier_call_chain() functions
with foo_notifier_call_chain_robust() that embeds the above pattern,
but ensures it is inside a single lock region.

Note: I switched atomic_notifier_call_chain_robust() to use
      the spinlock, since RCU cannot provide the guarantee
      required for the recovery.

Note: software_resume() error handling was broken afaict.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
---
 include/linux/notifier.h           |   15 +--
 kernel/cpu_pm.c                    |   48 ++++--------
 kernel/notifier.c                  |  144 ++++++++++++++++++++++---------------
 kernel/power/hibernate.c           |   26 +++---
 kernel/power/main.c                |    8 +-
 kernel/power/power.h               |    3 
 kernel/power/suspend.c             |   14 +--
 kernel/power/user.c                |   14 +--
 tools/power/pm-graph/sleepgraph.py |    2 
 9 files changed, 141 insertions(+), 133 deletions(-)

--- a/include/linux/notifier.h
+++ b/include/linux/notifier.h
@@ -161,20 +161,19 @@ extern int srcu_notifier_chain_unregiste
 
 extern int atomic_notifier_call_chain(struct atomic_notifier_head *nh,
 		unsigned long val, void *v);
-extern int __atomic_notifier_call_chain(struct atomic_notifier_head *nh,
-	unsigned long val, void *v, int nr_to_call, int *nr_calls);
 extern int blocking_notifier_call_chain(struct blocking_notifier_head *nh,
 		unsigned long val, void *v);
-extern int __blocking_notifier_call_chain(struct blocking_notifier_head *nh,
-	unsigned long val, void *v, int nr_to_call, int *nr_calls);
 extern int raw_notifier_call_chain(struct raw_notifier_head *nh,
 		unsigned long val, void *v);
-extern int __raw_notifier_call_chain(struct raw_notifier_head *nh,
-	unsigned long val, void *v, int nr_to_call, int *nr_calls);
 extern int srcu_notifier_call_chain(struct srcu_notifier_head *nh,
 		unsigned long val, void *v);
-extern int __srcu_notifier_call_chain(struct srcu_notifier_head *nh,
-	unsigned long val, void *v, int nr_to_call, int *nr_calls);
+
+extern int atomic_notifier_call_chain_robust(struct atomic_notifier_head *nh,
+		unsigned long val_up, unsigned long val_down, void *v);
+extern int blocking_notifier_call_chain_robust(struct blocking_notifier_head *nh,
+		unsigned long val_up, unsigned long val_down, void *v);
+extern int raw_notifier_call_chain_robust(struct raw_notifier_head *nh,
+		unsigned long val_up, unsigned long val_down, void *v);
 
 #define NOTIFY_DONE		0x0000		/* Don't care */
 #define NOTIFY_OK		0x0001		/* Suits me */
--- a/kernel/cpu_pm.c
+++ b/kernel/cpu_pm.c
@@ -15,18 +15,28 @@
 
 static ATOMIC_NOTIFIER_HEAD(cpu_pm_notifier_chain);
 
-static int cpu_pm_notify(enum cpu_pm_event event, int nr_to_call, int *nr_calls)
+static int cpu_pm_notify(enum cpu_pm_event event)
 {
 	int ret;
 
 	/*
-	 * __atomic_notifier_call_chain has a RCU read critical section, which
+	 * atomic_notifier_call_chain has a RCU read critical section, which
 	 * could be disfunctional in cpu idle. Copy RCU_NONIDLE code to let
 	 * RCU know this.
 	 */
 	rcu_irq_enter_irqson();
-	ret = __atomic_notifier_call_chain(&cpu_pm_notifier_chain, event, NULL,
-		nr_to_call, nr_calls);
+	ret = atomic_notifier_call_chain(&cpu_pm_notifier_chain, event, NULL);
+	rcu_irq_exit_irqson();
+
+	return notifier_to_errno(ret);
+}
+
+static int cpu_pm_notify_robust(enum cpu_pm_event event_up, enum cpu_pm_event event_down)
+{
+	int ret;
+
+	rcu_irq_enter_irqson();
+	ret = atomic_notifier_call_chain_robust(&cpu_pm_notifier_chain, event_up, event_down, NULL);
 	rcu_irq_exit_irqson();
 
 	return notifier_to_errno(ret);
@@ -80,18 +90,7 @@ EXPORT_SYMBOL_GPL(cpu_pm_unregister_noti
  */
 int cpu_pm_enter(void)
 {
-	int nr_calls;
-	int ret = 0;
-
-	ret = cpu_pm_notify(CPU_PM_ENTER, -1, &nr_calls);
-	if (ret)
-		/*
-		 * Inform listeners (nr_calls - 1) about failure of CPU PM
-		 * PM entry who are notified earlier to prepare for it.
-		 */
-		cpu_pm_notify(CPU_PM_ENTER_FAILED, nr_calls - 1, NULL);
-
-	return ret;
+	return cpu_pm_notify_robust(CPU_PM_ENTER, CPU_PM_ENTER_FAILED);
 }
 EXPORT_SYMBOL_GPL(cpu_pm_enter);
 
@@ -109,7 +108,7 @@ EXPORT_SYMBOL_GPL(cpu_pm_enter);
  */
 int cpu_pm_exit(void)
 {
-	return cpu_pm_notify(CPU_PM_EXIT, -1, NULL);
+	return cpu_pm_notify(CPU_PM_EXIT);
 }
 EXPORT_SYMBOL_GPL(cpu_pm_exit);
 
@@ -131,18 +130,7 @@ EXPORT_SYMBOL_GPL(cpu_pm_exit);
  */
 int cpu_cluster_pm_enter(void)
 {
-	int nr_calls;
-	int ret = 0;
-
-	ret = cpu_pm_notify(CPU_CLUSTER_PM_ENTER, -1, &nr_calls);
-	if (ret)
-		/*
-		 * Inform listeners (nr_calls - 1) about failure of CPU cluster
-		 * PM entry who are notified earlier to prepare for it.
-		 */
-		cpu_pm_notify(CPU_CLUSTER_PM_ENTER_FAILED, nr_calls - 1, NULL);
-
-	return ret;
+	return cpu_pm_notify_robust(CPU_CLUSTER_PM_ENTER, CPU_CLUSTER_PM_ENTER_FAILED);
 }
 EXPORT_SYMBOL_GPL(cpu_cluster_pm_enter);
 
@@ -163,7 +151,7 @@ EXPORT_SYMBOL_GPL(cpu_cluster_pm_enter);
  */
 int cpu_cluster_pm_exit(void)
 {
-	return cpu_pm_notify(CPU_CLUSTER_PM_EXIT, -1, NULL);
+	return cpu_pm_notify(CPU_CLUSTER_PM_EXIT);
 }
 EXPORT_SYMBOL_GPL(cpu_cluster_pm_exit);
 
--- a/kernel/notifier.c
+++ b/kernel/notifier.c
@@ -94,6 +94,34 @@ static int notifier_call_chain(struct no
 }
 NOKPROBE_SYMBOL(notifier_call_chain);
 
+/**
+ * notifier_call_chain_robust - Inform the registered notifiers about an event
+ *                              and rollback on error.
+ * @nl:		Pointer to head of the blocking notifier chain
+ * @val_up:	Value passed unmodified to the notifier function
+ * @val_down:	Value passed unmodified to the notifier function when recovering
+ *              from an error on @val_up
+ * @v		Pointer passed unmodified to the notifier function
+ *
+ * NOTE:	It is important the @nl chain doesn't change between the two
+ *		invocations of notifier_call_chain() such that we visit the
+ *		exact same notifier callbacks; this rules out any RCU usage.
+ *
+ * Returns:	the return value of the @val_up call.
+ */
+static int notifier_call_chain_robust(struct notifier_block **nl,
+				     unsigned long val_up, unsigned long val_down,
+				     void *v)
+{
+	int ret, nr = 0;
+
+	ret = notifier_call_chain(nl, val_up, v, -1, &nr);
+	if (ret & NOTIFY_STOP_MASK)
+		notifier_call_chain(nl, val_down, v, nr-1, NULL);
+
+	return ret;
+}
+
 /*
  *	Atomic notifier chain routines.  Registration and unregistration
  *	use a spinlock, and call_chain is synchronized by RCU (no locks).
@@ -144,13 +172,30 @@ int atomic_notifier_chain_unregister(str
 }
 EXPORT_SYMBOL_GPL(atomic_notifier_chain_unregister);
 
+int atomic_notifier_call_chain_robust(struct atomic_notifier_head *nh,
+		unsigned long val_up, unsigned long val_down, void *v)
+{
+	unsigned long flags;
+	int ret;
+
+	/*
+	 * Musn't use RCU; because then the notifier list can
+	 * change between the up and down traversal.
+	 */
+	spin_lock_irqsave(&nh->lock, flags);
+	ret = notifier_call_chain_robust(&nh->head, val_up, val_down, v);
+	spin_unlock_irqrestore(&nh->lock, flags);
+
+	return ret;
+}
+EXPORT_SYMBOL_GPL(atomic_notifier_call_chain_robust);
+NOKPROBE_SYMBOL(atomic_notifier_call_chain_robust);
+
 /**
- *	__atomic_notifier_call_chain - Call functions in an atomic notifier chain
+ *	atomic_notifier_call_chain - Call functions in an atomic notifier chain
  *	@nh: Pointer to head of the atomic notifier chain
  *	@val: Value passed unmodified to notifier function
  *	@v: Pointer passed unmodified to notifier function
- *	@nr_to_call: See the comment for notifier_call_chain.
- *	@nr_calls: See the comment for notifier_call_chain.
  *
  *	Calls each function in a notifier chain in turn.  The functions
  *	run in an atomic context, so they must not block.
@@ -163,24 +208,16 @@ EXPORT_SYMBOL_GPL(atomic_notifier_chain_
  *	Otherwise the return value is the return value
  *	of the last notifier function called.
  */
-int __atomic_notifier_call_chain(struct atomic_notifier_head *nh,
-				 unsigned long val, void *v,
-				 int nr_to_call, int *nr_calls)
+int atomic_notifier_call_chain(struct atomic_notifier_head *nh,
+			       unsigned long val, void *v)
 {
 	int ret;
 
 	rcu_read_lock();
-	ret = notifier_call_chain(&nh->head, val, v, nr_to_call, nr_calls);
+	ret = notifier_call_chain(&nh->head, val, v, -1, NULL);
 	rcu_read_unlock();
-	return ret;
-}
-EXPORT_SYMBOL_GPL(__atomic_notifier_call_chain);
-NOKPROBE_SYMBOL(__atomic_notifier_call_chain);
 
-int atomic_notifier_call_chain(struct atomic_notifier_head *nh,
-			       unsigned long val, void *v)
-{
-	return __atomic_notifier_call_chain(nh, val, v, -1, NULL);
+	return ret;
 }
 EXPORT_SYMBOL_GPL(atomic_notifier_call_chain);
 NOKPROBE_SYMBOL(atomic_notifier_call_chain);
@@ -250,13 +287,30 @@ int blocking_notifier_chain_unregister(s
 }
 EXPORT_SYMBOL_GPL(blocking_notifier_chain_unregister);
 
+int blocking_notifier_call_chain_robust(struct blocking_notifier_head *nh,
+		unsigned long val_up, unsigned long val_down, void *v)
+{
+	int ret = NOTIFY_DONE;
+
+	/*
+	 * We check the head outside the lock, but if this access is
+	 * racy then it does not matter what the result of the test
+	 * is, we re-check the list after having taken the lock anyway:
+	 */
+	if (rcu_access_pointer(nh->head)) {
+		down_read(&nh->rwsem);
+		ret = notifier_call_chain_robust(&nh->head, val_up, val_down, v);
+		up_read(&nh->rwsem);
+	}
+	return ret;
+}
+EXPORT_SYMBOL_GPL(blocking_notifier_call_chain_robust);
+
 /**
- *	__blocking_notifier_call_chain - Call functions in a blocking notifier chain
+ *	blocking_notifier_call_chain - Call functions in a blocking notifier chain
  *	@nh: Pointer to head of the blocking notifier chain
  *	@val: Value passed unmodified to notifier function
  *	@v: Pointer passed unmodified to notifier function
- *	@nr_to_call: See comment for notifier_call_chain.
- *	@nr_calls: See comment for notifier_call_chain.
  *
  *	Calls each function in a notifier chain in turn.  The functions
  *	run in a process context, so they are allowed to block.
@@ -268,9 +322,8 @@ EXPORT_SYMBOL_GPL(blocking_notifier_chai
  *	Otherwise the return value is the return value
  *	of the last notifier function called.
  */
-int __blocking_notifier_call_chain(struct blocking_notifier_head *nh,
-				   unsigned long val, void *v,
-				   int nr_to_call, int *nr_calls)
+int blocking_notifier_call_chain(struct blocking_notifier_head *nh,
+		unsigned long val, void *v)
 {
 	int ret = NOTIFY_DONE;
 
@@ -281,19 +334,11 @@ int __blocking_notifier_call_chain(struc
 	 */
 	if (rcu_access_pointer(nh->head)) {
 		down_read(&nh->rwsem);
-		ret = notifier_call_chain(&nh->head, val, v, nr_to_call,
-					nr_calls);
+		ret = notifier_call_chain(&nh->head, val, v, -1, NULL);
 		up_read(&nh->rwsem);
 	}
 	return ret;
 }
-EXPORT_SYMBOL_GPL(__blocking_notifier_call_chain);
-
-int blocking_notifier_call_chain(struct blocking_notifier_head *nh,
-		unsigned long val, void *v)
-{
-	return __blocking_notifier_call_chain(nh, val, v, -1, NULL);
-}
 EXPORT_SYMBOL_GPL(blocking_notifier_call_chain);
 
 /*
@@ -335,13 +380,18 @@ int raw_notifier_chain_unregister(struct
 }
 EXPORT_SYMBOL_GPL(raw_notifier_chain_unregister);
 
+int raw_notifier_call_chain_robust(struct raw_notifier_head *nh,
+		unsigned long val_up, unsigned long val_down, void *v)
+{
+	return notifier_call_chain_robust(&nh->head, val_up, val_down, v);
+}
+EXPORT_SYMBOL_GPL(raw_notifier_call_chain_robust);
+
 /**
- *	__raw_notifier_call_chain - Call functions in a raw notifier chain
+ *	raw_notifier_call_chain - Call functions in a raw notifier chain
  *	@nh: Pointer to head of the raw notifier chain
  *	@val: Value passed unmodified to notifier function
  *	@v: Pointer passed unmodified to notifier function
- *	@nr_to_call: See comment for notifier_call_chain.
- *	@nr_calls: See comment for notifier_call_chain
  *
  *	Calls each function in a notifier chain in turn.  The functions
  *	run in an undefined context.
@@ -354,18 +404,10 @@ EXPORT_SYMBOL_GPL(raw_notifier_chain_unr
  *	Otherwise the return value is the return value
  *	of the last notifier function called.
  */
-int __raw_notifier_call_chain(struct raw_notifier_head *nh,
-			      unsigned long val, void *v,
-			      int nr_to_call, int *nr_calls)
-{
-	return notifier_call_chain(&nh->head, val, v, nr_to_call, nr_calls);
-}
-EXPORT_SYMBOL_GPL(__raw_notifier_call_chain);
-
 int raw_notifier_call_chain(struct raw_notifier_head *nh,
 		unsigned long val, void *v)
 {
-	return __raw_notifier_call_chain(nh, val, v, -1, NULL);
+	return notifier_call_chain(&nh->head, val, v, -1, NULL);
 }
 EXPORT_SYMBOL_GPL(raw_notifier_call_chain);
 
@@ -437,12 +479,10 @@ int srcu_notifier_chain_unregister(struc
 EXPORT_SYMBOL_GPL(srcu_notifier_chain_unregister);
 
 /**
- *	__srcu_notifier_call_chain - Call functions in an SRCU notifier chain
+ *	srcu_notifier_call_chain - Call functions in an SRCU notifier chain
  *	@nh: Pointer to head of the SRCU notifier chain
  *	@val: Value passed unmodified to notifier function
  *	@v: Pointer passed unmodified to notifier function
- *	@nr_to_call: See comment for notifier_call_chain.
- *	@nr_calls: See comment for notifier_call_chain
  *
  *	Calls each function in a notifier chain in turn.  The functions
  *	run in a process context, so they are allowed to block.
@@ -454,25 +494,17 @@ EXPORT_SYMBOL_GPL(srcu_notifier_chain_un
  *	Otherwise the return value is the return value
  *	of the last notifier function called.
  */
-int __srcu_notifier_call_chain(struct srcu_notifier_head *nh,
-			       unsigned long val, void *v,
-			       int nr_to_call, int *nr_calls)
+int srcu_notifier_call_chain(struct srcu_notifier_head *nh,
+		unsigned long val, void *v)
 {
 	int ret;
 	int idx;
 
 	idx = srcu_read_lock(&nh->srcu);
-	ret = notifier_call_chain(&nh->head, val, v, nr_to_call, nr_calls);
+	ret = notifier_call_chain(&nh->head, val, v, -1, NULL);
 	srcu_read_unlock(&nh->srcu, idx);
 	return ret;
 }
-EXPORT_SYMBOL_GPL(__srcu_notifier_call_chain);
-
-int srcu_notifier_call_chain(struct srcu_notifier_head *nh,
-		unsigned long val, void *v)
-{
-	return __srcu_notifier_call_chain(nh, val, v, -1, NULL);
-}
 EXPORT_SYMBOL_GPL(srcu_notifier_call_chain);
 
 /**
--- a/kernel/power/hibernate.c
+++ b/kernel/power/hibernate.c
@@ -694,8 +694,8 @@ static int load_image_and_restore(void)
  */
 int hibernate(void)
 {
-	int error, nr_calls = 0;
 	bool snapshot_test = false;
+	int error;
 
 	if (!hibernation_available()) {
 		pm_pr_dbg("Hibernation not available.\n");
@@ -711,11 +711,9 @@ int hibernate(void)
 
 	pr_info("hibernation entry\n");
 	pm_prepare_console();
-	error = __pm_notifier_call_chain(PM_HIBERNATION_PREPARE, -1, &nr_calls);
-	if (error) {
-		nr_calls--;
-		goto Exit;
-	}
+	error = pm_notifier_call_chain_robust(PM_HIBERNATION_PREPARE, PM_POST_HIBERNATION);
+	if (error)
+		goto Restore;
 
 	ksys_sync_helper();
 
@@ -773,7 +771,8 @@ int hibernate(void)
 	/* Don't bother checking whether freezer_test_done is true */
 	freezer_test_done = false;
  Exit:
-	__pm_notifier_call_chain(PM_POST_HIBERNATION, nr_calls, NULL);
+	pm_notifier_call_chain(PM_POST_HIBERNATION);
+ Restore:
 	pm_restore_console();
 	atomic_inc(&snapshot_device_available);
  Unlock:
@@ -801,7 +800,7 @@ int hibernate(void)
  */
 static int software_resume(void)
 {
-	int error, nr_calls = 0;
+	int error;
 
 	/*
 	 * If the user said "noresume".. bail out early.
@@ -888,11 +887,9 @@ static int software_resume(void)
 
 	pr_info("resume from hibernation\n");
 	pm_prepare_console();
-	error = __pm_notifier_call_chain(PM_RESTORE_PREPARE, -1, &nr_calls);
-	if (error) {
-		nr_calls--;
-		goto Close_Finish;
-	}
+	error = pm_notifier_call_chain_robust(PM_RESTORE_PREPARE, PM_POST_RESTORE);
+	if (error)
+		goto Restore;
 
 	pm_pr_dbg("Preparing processes for hibernation restore.\n");
 	error = freeze_processes();
@@ -901,7 +898,8 @@ static int software_resume(void)
 	error = load_image_and_restore();
 	thaw_processes();
  Finish:
-	__pm_notifier_call_chain(PM_POST_RESTORE, nr_calls, NULL);
+	pm_notifier_call_chain(PM_POST_RESTORE);
+ Restore:
 	pm_restore_console();
 	pr_info("resume failed (%d)\n", error);
 	atomic_inc(&snapshot_device_available);
--- a/kernel/power/main.c
+++ b/kernel/power/main.c
@@ -80,18 +80,18 @@ int unregister_pm_notifier(struct notifi
 }
 EXPORT_SYMBOL_GPL(unregister_pm_notifier);
 
-int __pm_notifier_call_chain(unsigned long val, int nr_to_call, int *nr_calls)
+int pm_notifier_call_chain_robust(unsigned long val_up, unsigned long val_down)
 {
 	int ret;
 
-	ret = __blocking_notifier_call_chain(&pm_chain_head, val, NULL,
-						nr_to_call, nr_calls);
+	ret = blocking_notifier_call_chain_robust(&pm_chain_head, val_up, val_down, NULL);
 
 	return notifier_to_errno(ret);
 }
+
 int pm_notifier_call_chain(unsigned long val)
 {
-	return __pm_notifier_call_chain(val, -1, NULL);
+	return blocking_notifier_call_chain(&pm_chain_head, val, NULL);
 }
 
 /* If set, devices may be suspended and resumed asynchronously. */
--- a/kernel/power/power.h
+++ b/kernel/power/power.h
@@ -210,8 +210,7 @@ static inline void suspend_test_finish(c
 
 #ifdef CONFIG_PM_SLEEP
 /* kernel/power/main.c */
-extern int __pm_notifier_call_chain(unsigned long val, int nr_to_call,
-				    int *nr_calls);
+extern int pm_notifier_call_chain_robust(unsigned long val_up, unsigned long val_down);
 extern int pm_notifier_call_chain(unsigned long val);
 #endif
 
--- a/kernel/power/suspend.c
+++ b/kernel/power/suspend.c
@@ -342,18 +342,16 @@ static int suspend_test(int level)
  */
 static int suspend_prepare(suspend_state_t state)
 {
-	int error, nr_calls = 0;
+	int error;
 
 	if (!sleep_state_supported(state))
 		return -EPERM;
 
 	pm_prepare_console();
 
-	error = __pm_notifier_call_chain(PM_SUSPEND_PREPARE, -1, &nr_calls);
-	if (error) {
-		nr_calls--;
-		goto Finish;
-	}
+	error = pm_notifier_call_chain_robust(PM_SUSPEND_PREPARE, PM_POST_SUSPEND);
+	if (error)
+		goto Restore;
 
 	trace_suspend_resume(TPS("freeze_processes"), 0, true);
 	error = suspend_freeze_processes();
@@ -363,8 +361,8 @@ static int suspend_prepare(suspend_state
 
 	suspend_stats.failed_freeze++;
 	dpm_save_failed_step(SUSPEND_FREEZE);
- Finish:
-	__pm_notifier_call_chain(PM_POST_SUSPEND, nr_calls, NULL);
+	pm_notifier_call_chain(PM_POST_SUSPEND);
+ Restore:
 	pm_restore_console();
 	return error;
 }
--- a/kernel/power/user.c
+++ b/kernel/power/user.c
@@ -44,7 +44,7 @@ atomic_t snapshot_device_available = ATO
 static int snapshot_open(struct inode *inode, struct file *filp)
 {
 	struct snapshot_data *data;
-	int error, nr_calls = 0;
+	int error;
 
 	if (!hibernation_available())
 		return -EPERM;
@@ -71,9 +71,7 @@ static int snapshot_open(struct inode *i
 			swap_type_of(swsusp_resume_device, 0, NULL) : -1;
 		data->mode = O_RDONLY;
 		data->free_bitmaps = false;
-		error = __pm_notifier_call_chain(PM_HIBERNATION_PREPARE, -1, &nr_calls);
-		if (error)
-			__pm_notifier_call_chain(PM_POST_HIBERNATION, --nr_calls, NULL);
+		error = pm_notifier_call_chain_robust(PM_HIBERNATION_PREPARE, PM_POST_HIBERNATION);
 	} else {
 		/*
 		 * Resuming.  We may need to wait for the image device to
@@ -83,15 +81,11 @@ static int snapshot_open(struct inode *i
 
 		data->swap = -1;
 		data->mode = O_WRONLY;
-		error = __pm_notifier_call_chain(PM_RESTORE_PREPARE, -1, &nr_calls);
+		error = pm_notifier_call_chain_robust(PM_RESTORE_PREPARE, PM_POST_RESTORE);
 		if (!error) {
 			error = create_basic_memory_bitmaps();
 			data->free_bitmaps = !error;
-		} else
-			nr_calls--;
-
-		if (error)
-			__pm_notifier_call_chain(PM_POST_RESTORE, nr_calls, NULL);
+		}
 	}
 	if (error)
 		atomic_inc(&snapshot_device_available);
--- a/tools/power/pm-graph/sleepgraph.py
+++ b/tools/power/pm-graph/sleepgraph.py
@@ -167,7 +167,7 @@ import base64
 	tracefuncs = {
 		'sys_sync': {},
 		'ksys_sync': {},
-		'__pm_notifier_call_chain': {},
+		'pm_notifier_call_chain_robust': {},
 		'pm_prepare_console': {},
 		'pm_notifier_call_chain': {},
 		'freeze_processes': {},

Re: [PATCH v4 01/18] notifier: Fix broken error handling pattern

[Steven Rostedt]

On Fri, 01 May 2020 22:28:50 +0200
Peter Zijlstra <peterz@infradead.org> wrote:

> The current notifiers have the following error handling pattern all
> over the place:
> 
> 	int err, nr;
> 
> 	err = __foo_notifier_call_chain(&chain, val_up, v, -1, &nr);
> 	if (err & NOTIFIER_STOP_MASK)
> 		__foo_notifier_call_chain(&chain, val_down, v, nr-1, NULL)
> 
> And aside from the endless repetition thereof, it is broken. Consider
> blocking notifiers; both calls take and drop the rwsem, this means
> that the notifier list can change in between the two calls, making @nr
> meaningless.
> 
> Fix this by replacing all the __foo_notifier_call_chain() functions
> with foo_notifier_call_chain_robust() that embeds the above pattern,
> but ensures it is inside a single lock region.
> 
> Note: I switched atomic_notifier_call_chain_robust() to use
>       the spinlock, since RCU cannot provide the guarantee
>       required for the recovery.
> 
> Note: software_resume() error handling was broken afaict.
> 
> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
> Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
> ---
>  include/linux/notifier.h           |   15 +--
>  kernel/cpu_pm.c                    |   48 ++++--------
>  kernel/notifier.c                  |  144 ++++++++++++++++++++++---------------
>  kernel/power/hibernate.c           |   26 +++---
>  kernel/power/main.c                |    8 +-
>  kernel/power/power.h               |    3 
>  kernel/power/suspend.c             |   14 +--
>  kernel/power/user.c                |   14 +--
>  tools/power/pm-graph/sleepgraph.py |    2 
>  9 files changed, 141 insertions(+), 133 deletions(-)
> 

This looks like something that can go in outside this series.

-- Steve

[PATCH v4 02/18] module: Fix up module_notifier return values

[Peter Zijlstra]

While auditing all module notifiers I noticed a whole bunch of fail
wrt the return value. Notifiers have a 'special' return semantics.

As is; NOTIFY_DONE vs NOTIFY_OK is a bit vague; but
notifier_from_errno(0) results in NOTIFY_OK and NOTIFY_DONE has a
comment that says "Don't care".

>From this I've used NOTIFY_DONE when the function completely ignores
the callback and notifier_to_error() isn't used.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Reviewed-by: Joel Fernandes (Google) <joel@joelfernandes.org>
Reviewed-by: Robert Richter <rric@kernel.org>
Acked-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
---
 drivers/oprofile/buffer_sync.c |    4 ++--
 kernel/trace/bpf_trace.c       |    8 ++++++--
 kernel/trace/trace.c           |    2 +-
 kernel/trace/trace_events.c    |    2 +-
 kernel/trace/trace_printk.c    |    4 ++--
 kernel/tracepoint.c            |    2 +-
 6 files changed, 13 insertions(+), 9 deletions(-)

--- a/drivers/oprofile/buffer_sync.c
+++ b/drivers/oprofile/buffer_sync.c
@@ -116,7 +116,7 @@ module_load_notify(struct notifier_block
 {
 #ifdef CONFIG_MODULES
 	if (val != MODULE_STATE_COMING)
-		return 0;
+		return NOTIFY_DONE;
 
 	/* FIXME: should we process all CPU buffers ? */
 	mutex_lock(&buffer_mutex);
@@ -124,7 +124,7 @@ module_load_notify(struct notifier_block
 	add_event_entry(MODULE_LOADED_CODE);
 	mutex_unlock(&buffer_mutex);
 #endif
-	return 0;
+	return NOTIFY_OK;
 }
 
 
--- a/kernel/trace/bpf_trace.c
+++ b/kernel/trace/bpf_trace.c
@@ -1451,10 +1451,11 @@ static int bpf_event_notify(struct notif
 {
 	struct bpf_trace_module *btm, *tmp;
 	struct module *mod = module;
+	int ret = 0;
 
 	if (mod->num_bpf_raw_events == 0 ||
 	    (op != MODULE_STATE_COMING && op != MODULE_STATE_GOING))
-		return 0;
+		goto out;
 
 	mutex_lock(&bpf_module_mutex);
 
@@ -1464,6 +1465,8 @@ static int bpf_event_notify(struct notif
 		if (btm) {
 			btm->module = module;
 			list_add(&btm->list, &bpf_trace_modules);
+		} else {
+			ret = -ENOMEM;
 		}
 		break;
 	case MODULE_STATE_GOING:
@@ -1479,7 +1482,8 @@ static int bpf_event_notify(struct notif
 
 	mutex_unlock(&bpf_module_mutex);
 
-	return 0;
+out:
+	return notifier_from_errno(ret);
 }
 
 static struct notifier_block bpf_module_nb = {
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -8696,7 +8696,7 @@ static int trace_module_notify(struct no
 		break;
 	}
 
-	return 0;
+	return NOTIFY_OK;
 }
 
 static struct notifier_block trace_module_nb = {
--- a/kernel/trace/trace_events.c
+++ b/kernel/trace/trace_events.c
@@ -2442,7 +2442,7 @@ static int trace_module_notify(struct no
 	mutex_unlock(&trace_types_lock);
 	mutex_unlock(&event_mutex);
 
-	return 0;
+	return NOTIFY_OK;
 }
 
 static struct notifier_block trace_module_nb = {
--- a/kernel/trace/trace_printk.c
+++ b/kernel/trace/trace_printk.c
@@ -95,7 +95,7 @@ static int module_trace_bprintk_format_n
 		if (val == MODULE_STATE_COMING)
 			hold_module_trace_bprintk_format(start, end);
 	}
-	return 0;
+	return NOTIFY_OK;
 }
 
 /*
@@ -173,7 +173,7 @@ __init static int
 module_trace_bprintk_format_notify(struct notifier_block *self,
 		unsigned long val, void *data)
 {
-	return 0;
+	return NOTIFY_OK;
 }
 static inline const char **
 find_next_mod_format(int start_index, void *v, const char **fmt, loff_t *pos)
--- a/kernel/tracepoint.c
+++ b/kernel/tracepoint.c
@@ -521,7 +521,7 @@ static int tracepoint_module_notify(stru
 	case MODULE_STATE_UNFORMED:
 		break;
 	}
-	return ret;
+	return notifier_from_errno(ret);
 }
 
 static struct notifier_block tracepoint_module_nb = {

[PATCH v4 03/18] module: Properly propagate MODULE_STATE_COMING failure

[Peter Zijlstra]

Now that notifiers got unbroken; use the proper interface to handle
notifier errors and propagate them.

There were already MODULE_STATE_COMING notifiers that failed; notably:

 - jump_label_module_notifier()
 - tracepoint_module_notify()
 - bpf_event_notify()

By propagating this error, we fix those users.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Miroslav Benes <mbenes@suse.cz>
Acked-by: Jessica Yu <jeyu@kernel.org>
Acked-by: Josh Poimboeuf <jpoimboe@redhat.com>
---
 kernel/module.c |   10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

--- a/kernel/module.c
+++ b/kernel/module.c
@@ -3751,9 +3751,13 @@ static int prepare_coming_module(struct
 	if (err)
 		return err;
 
-	blocking_notifier_call_chain(&module_notify_list,
-				     MODULE_STATE_COMING, mod);
-	return 0;
+	err = blocking_notifier_call_chain_robust(&module_notify_list,
+			MODULE_STATE_COMING, MODULE_STATE_GOING, mod);
+	err = notifier_to_errno(err);
+	if (err)
+		klp_module_going(mod);
+
+	return err;
 }
 
 static int unknown_module_param_cb(char *param, char *val, const char *modname,

[PATCH v4 04/18] jump_label,module: Fix module lifetime for __jump_label_mod_text_reserved

[Peter Zijlstra]

Nothing ensures the module exists while we're iterating
mod->jump_entries in __jump_label_mod_text_reserved(), take a module
reference to ensure the module sticks around.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
---
 kernel/jump_label.c |   10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

--- a/kernel/jump_label.c
+++ b/kernel/jump_label.c
@@ -539,19 +539,25 @@ static void static_key_set_mod(struct st
 static int __jump_label_mod_text_reserved(void *start, void *end)
 {
 	struct module *mod;
+	int ret;
 
 	preempt_disable();
 	mod = __module_text_address((unsigned long)start);
 	WARN_ON_ONCE(__module_text_address((unsigned long)end) != mod);
+	if (!try_module_get(mod))
+		mod = NULL;
 	preempt_enable();
 
 	if (!mod)
 		return 0;
 
-
-	return __jump_label_text_reserved(mod->jump_entries,
+	ret = __jump_label_text_reserved(mod->jump_entries,
 				mod->jump_entries + mod->num_jump_entries,
 				start, end);
+
+	module_put(mod);
+
+	return ret;
 }
 
 static void __jump_label_mod_update(struct static_key *key)

[PATCH v4 05/18] compiler.h: Make __ADDRESSABLE() symbol truly unique

[Peter Zijlstra]

From: Josh Poimboeuf <jpoimboe@redhat.com>

The __ADDRESSABLE() macro uses the __LINE__ macro to create a temporary
symbol which has a unique name.  However, if the macro is used multiple
times from within another macro, the line number will always be the
same, resulting in duplicate symbols.

Make the temporary symbols truly unique by using __UNIQUE_ID instead of
__LINE__.

Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
---
 include/linux/compiler.h |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/include/linux/compiler.h
+++ b/include/linux/compiler.h
@@ -299,7 +299,7 @@ unsigned long read_word_at_a_time(const
  */
 #define __ADDRESSABLE(sym) \
 	static void * __section(.discard.addressable) __used \
-		__PASTE(__addressable_##sym, __LINE__) = (void *)&sym;
+		__UNIQUE_ID(__PASTE(__addressable_,sym)) = (void *)&sym;
 
 /**
  * offset_to_ptr - convert a relative memory offset to an absolute pointer

[PATCH v4 06/18] static_call: Add basic static call infrastructure

[Peter Zijlstra]

From: Josh Poimboeuf <jpoimboe@redhat.com>

Static calls are a replacement for global function pointers.  They use
code patching to allow direct calls to be used instead of indirect
calls.  They give the flexibility of function pointers, but with
improved performance.  This is especially important for cases where
retpolines would otherwise be used, as retpolines can significantly
impact performance.

The concept and code are an extension of previous work done by Ard
Biesheuvel and Steven Rostedt:

  https://lkml.kernel.org/r/20181005081333.15018-1-ard.biesheuvel@linaro.org
  https://lkml.kernel.org/r/20181006015110.653946300@goodmis.org

There are two implementations, depending on arch support:

 1) out-of-line: patched trampolines (CONFIG_HAVE_STATIC_CALL)
 2) basic function pointers

For more details, see the comments in include/linux/static_call.h.

[peterz: simplified interface]
Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
---
 arch/Kconfig                      |    3 
 include/linux/static_call.h       |  156 ++++++++++++++++++++++++++++++++++++++
 include/linux/static_call_types.h |   15 +++
 3 files changed, 174 insertions(+)
 create mode 100644 include/linux/static_call.h
 create mode 100644 include/linux/static_call_types.h

--- a/arch/Kconfig
+++ b/arch/Kconfig
@@ -960,6 +960,9 @@ config HAVE_SPARSE_SYSCALL_NR
 	  entries at 4000, 5000 and 6000 locations. This option turns on syscall
 	  related optimizations for a given architecture.
 
+config HAVE_STATIC_CALL
+	bool
+
 source "kernel/gcov/Kconfig"
 
 source "scripts/gcc-plugins/Kconfig"
--- /dev/null
+++ b/include/linux/static_call.h
@@ -0,0 +1,156 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _LINUX_STATIC_CALL_H
+#define _LINUX_STATIC_CALL_H
+
+/*
+ * Static call support
+ *
+ * Static calls use code patching to hard-code function pointers into direct
+ * branch instructions.  They give the flexibility of function pointers, but
+ * with improved performance.  This is especially important for cases where
+ * retpolines would otherwise be used, as retpolines can significantly impact
+ * performance.
+ *
+ *
+ * API overview:
+ *
+ *   DECLARE_STATIC_CALL(name, func);
+ *   DEFINE_STATIC_CALL(name, func);
+ *   static_call(name)(args...);
+ *   static_call_update(name, func);
+ *
+ * Usage example:
+ *
+ *   # Start with the following functions (with identical prototypes):
+ *   int func_a(int arg1, int arg2);
+ *   int func_b(int arg1, int arg2);
+ *
+ *   # Define a 'my_name' reference, associated with func_a() by default
+ *   DEFINE_STATIC_CALL(my_name, func_a);
+ *
+ *   # Call func_a()
+ *   static_call(my_name)(arg1, arg2);
+ *
+ *   # Update 'my_name' to point to func_b()
+ *   static_call_update(my_name, &func_b);
+ *
+ *   # Call func_b()
+ *   static_call(my_name)(arg1, arg2);
+ *
+ *
+ * Implementation details:
+ *
+ *    This requires some arch-specific code (CONFIG_HAVE_STATIC_CALL).
+ *    Otherwise basic indirect calls are used (with function pointers).
+ *
+ *    Each static_call() site calls into a trampoline associated with the name.
+ *    The trampoline has a direct branch to the default function.  Updates to a
+ *    name will modify the trampoline's branch destination.
+ *
+ *    If the arch has CONFIG_HAVE_STATIC_CALL_INLINE, then the call sites
+ *    themselves will be patched at runtime to call the functions directly,
+ *    rather than calling through the trampoline.  This requires objtool or a
+ *    compiler plugin to detect all the static_call() sites and annotate them
+ *    in the .static_call_sites section.
+ */
+
+#include <linux/types.h>
+#include <linux/cpu.h>
+#include <linux/static_call_types.h>
+
+#ifdef CONFIG_HAVE_STATIC_CALL
+#include <asm/static_call.h>
+
+/*
+ * Either @site or @tramp can be NULL.
+ */
+extern void arch_static_call_transform(void *site, void *tramp, void *func);
+
+#define STATIC_CALL_TRAMP_ADDR(name) &STATIC_CALL_TRAMP(name)
+
+/*
+ * __ADDRESSABLE() is used to ensure the key symbol doesn't get stripped from
+ * the symbol table so that objtool can reference it when it generates the
+ * .static_call_sites section.
+ */
+#define __static_call(name)						\
+({									\
+	__ADDRESSABLE(STATIC_CALL_KEY(name));				\
+	&STATIC_CALL_TRAMP(name);					\
+})
+
+#else
+#define STATIC_CALL_TRAMP_ADDR(name) NULL
+#endif
+
+
+#define DECLARE_STATIC_CALL(name, func)					\
+	extern struct static_call_key STATIC_CALL_KEY(name);		\
+	extern typeof(func) STATIC_CALL_TRAMP(name);
+
+#define static_call_update(name, func)					\
+({									\
+	BUILD_BUG_ON(!__same_type(*(func), STATIC_CALL_TRAMP(name)));	\
+	__static_call_update(&STATIC_CALL_KEY(name),			\
+			     STATIC_CALL_TRAMP_ADDR(name), func);	\
+})
+
+#if defined(CONFIG_HAVE_STATIC_CALL)
+
+struct static_call_key {
+	void *func;
+};
+
+#define DEFINE_STATIC_CALL(name, _func)					\
+	DECLARE_STATIC_CALL(name, _func);				\
+	struct static_call_key STATIC_CALL_KEY(name) = {		\
+		.func = _func,						\
+	};								\
+	ARCH_DEFINE_STATIC_CALL_TRAMP(name, _func)
+
+#define static_call(name)	__static_call(name)
+
+static inline
+void __static_call_update(struct static_call_key *key, void *tramp, void *func)
+{
+	cpus_read_lock();
+	WRITE_ONCE(key->func, func);
+	arch_static_call_transform(NULL, tramp, func);
+	cpus_read_unlock();
+}
+
+#define EXPORT_STATIC_CALL(name)					\
+	EXPORT_SYMBOL(STATIC_CALL_KEY(name));				\
+	EXPORT_SYMBOL(STATIC_CALL_TRAMP(name))
+
+#define EXPORT_STATIC_CALL_GPL(name)					\
+	EXPORT_SYMBOL_GPL(STATIC_CALL_KEY(name));			\
+	EXPORT_SYMBOL_GPL(STATIC_CALL_TRAMP(name))
+
+#else /* Generic implementation */
+
+struct static_call_key {
+	void *func;
+};
+
+#define DEFINE_STATIC_CALL(name, _func)					\
+	DECLARE_STATIC_CALL(name, _func);				\
+	struct static_call_key STATIC_CALL_KEY(name) = {		\
+		.func = _func,						\
+	}
+
+#define static_call(name)						\
+	((typeof(STATIC_CALL_TRAMP(name))*)(STATIC_CALL_KEY(name).func))
+
+static inline
+void __static_call_update(struct static_call_key *key, void *tramp, void *func)
+{
+	WRITE_ONCE(key->func, func);
+}
+
+#define EXPORT_STATIC_CALL(name)	EXPORT_SYMBOL(STATIC_CALL_KEY(name))
+#define EXPORT_STATIC_CALL_GPL(name)	EXPORT_SYMBOL_GPL(STATIC_CALL_KEY(name))
+
+#endif /* CONFIG_HAVE_STATIC_CALL */
+
+#endif /* _LINUX_STATIC_CALL_H */
--- /dev/null
+++ b/include/linux/static_call_types.h
@@ -0,0 +1,15 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _STATIC_CALL_TYPES_H
+#define _STATIC_CALL_TYPES_H
+
+#include <linux/stringify.h>
+
+#define STATIC_CALL_PREFIX		__SC__
+#define STATIC_CALL_KEY(name)		__PASTE(STATIC_CALL_PREFIX, name)
+
+#define STATIC_CALL_TRAMP_PREFIX	__SCT__
+#define STATIC_CALL_TRAMP_PREFIX_STR	__stringify(STATIC_CALL_TRAMP_PREFIX)
+#define STATIC_CALL_TRAMP(name)		__PASTE(STATIC_CALL_TRAMP_PREFIX, name)
+#define STATIC_CALL_TRAMP_STR(name)	__stringify(STATIC_CALL_TRAMP(name))
+
+#endif /* _STATIC_CALL_TYPES_H */

Re: [PATCH v4 06/18] static_call: Add basic static call infrastructure

[Josh Poimboeuf]

On Fri, May 01, 2020 at 10:28:55PM +0200, Peter Zijlstra wrote:
> +++ b/include/linux/static_call_types.h
> @@ -0,0 +1,15 @@
> +/* SPDX-License-Identifier: GPL-2.0 */
> +#ifndef _STATIC_CALL_TYPES_H
> +#define _STATIC_CALL_TYPES_H
> +
> +#include <linux/stringify.h>
> +
> +#define STATIC_CALL_PREFIX		__SC__

This should probably be STATIC_CALL_KEY_PREFIX.  And change the prefix
to __SCK__ for consistency?

> +#define STATIC_CALL_KEY(name)		__PASTE(STATIC_CALL_PREFIX, name)
> +
> +#define STATIC_CALL_TRAMP_PREFIX	__SCT__
> +#define STATIC_CALL_TRAMP_PREFIX_STR	__stringify(STATIC_CALL_TRAMP_PREFIX)
> +#define STATIC_CALL_TRAMP(name)		__PASTE(STATIC_CALL_TRAMP_PREFIX, name)
> +#define STATIC_CALL_TRAMP_STR(name)	__stringify(STATIC_CALL_TRAMP(name))

-- 
Josh

[PATCH v4 07/18] static_call: Add inline static call infrastructure

[Peter Zijlstra]

From: Josh Poimboeuf <jpoimboe@redhat.com>

Add infrastructure for an arch-specific CONFIG_HAVE_STATIC_CALL_INLINE
option, which is a faster version of CONFIG_HAVE_STATIC_CALL.  At
runtime, the static call sites are patched directly, rather than using
the out-of-line trampolines.

Compared to out-of-line static calls, the performance benefits are more
modest, but still measurable.  Steven Rostedt did some tracepoint
measurements:

  https://lkml.kernel.org/r/20181126155405.72b4f718@gandalf.local.home

This code is heavily inspired by the jump label code (aka "static
jumps"), as some of the concepts are very similar.

For more details, see the comments in include/linux/static_call.h.

[peterz: simplified interface; merged trampolines]
Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
---
 arch/Kconfig                      |    4 
 include/asm-generic/vmlinux.lds.h |    7 
 include/linux/module.h            |    5 
 include/linux/static_call.h       |   36 ++++
 include/linux/static_call_types.h |   13 +
 kernel/Makefile                   |    1 
 kernel/module.c                   |    5 
 kernel/static_call.c              |  302 ++++++++++++++++++++++++++++++++++++++
 8 files changed, 372 insertions(+), 1 deletion(-)
 create mode 100644 kernel/static_call.c

--- a/arch/Kconfig
+++ b/arch/Kconfig
@@ -963,6 +963,10 @@ config HAVE_SPARSE_SYSCALL_NR
 config HAVE_STATIC_CALL
 	bool
 
+config HAVE_STATIC_CALL_INLINE
+	bool
+	depends on HAVE_STATIC_CALL
+
 source "kernel/gcov/Kconfig"
 
 source "scripts/gcc-plugins/Kconfig"
--- a/include/asm-generic/vmlinux.lds.h
+++ b/include/asm-generic/vmlinux.lds.h
@@ -368,6 +368,12 @@
 	KEEP(*(__jump_table))						\
 	__stop___jump_table = .;
 
+#define STATIC_CALL_DATA						\
+	. = ALIGN(8);							\
+	__start_static_call_sites = .;					\
+	KEEP(*(.static_call_sites))					\
+	__stop_static_call_sites = .;
+
 /*
  * Allow architectures to handle ro_after_init data on their
  * own by defining an empty RO_AFTER_INIT_DATA.
@@ -377,6 +383,7 @@
 	__start_ro_after_init = .;					\
 	*(.data..ro_after_init)						\
 	JUMP_TABLE_DATA							\
+	STATIC_CALL_DATA						\
 	__end_ro_after_init = .;
 #endif
 
--- a/include/linux/module.h
+++ b/include/linux/module.h
@@ -25,6 +25,7 @@
 #include <linux/error-injection.h>
 #include <linux/tracepoint-defs.h>
 #include <linux/srcu.h>
+#include <linux/static_call_types.h>
 
 #include <linux/percpu.h>
 #include <asm/module.h>
@@ -489,6 +490,10 @@ struct module {
 	unsigned int num_ftrace_callsites;
 	unsigned long *ftrace_callsites;
 #endif
+#ifdef CONFIG_HAVE_STATIC_CALL_INLINE
+	int num_static_call_sites;
+	struct static_call_site *static_call_sites;
+#endif
 
 #ifdef CONFIG_LIVEPATCH
 	bool klp; /* Is this a livepatch module? */
--- a/include/linux/static_call.h
+++ b/include/linux/static_call.h
@@ -95,7 +95,41 @@ extern void arch_static_call_transform(v
 			     STATIC_CALL_TRAMP_ADDR(name), func);	\
 })
 
-#if defined(CONFIG_HAVE_STATIC_CALL)
+#ifdef CONFIG_HAVE_STATIC_CALL_INLINE
+
+struct static_call_mod {
+	struct static_call_mod *next;
+	struct module *mod; /* for vmlinux, mod == NULL */
+	struct static_call_site *sites;
+};
+
+struct static_call_key {
+	void *func;
+	struct static_call_mod *next;
+};
+
+extern void __static_call_update(struct static_call_key *key, void *tramp, void *func);
+extern int static_call_mod_init(struct module *mod);
+
+#define DEFINE_STATIC_CALL(name, _func)					\
+	DECLARE_STATIC_CALL(name, _func);				\
+	struct static_call_key STATIC_CALL_KEY(name) = {		\
+		.func = _func,						\
+		.next = NULL,						\
+	};								\
+	ARCH_DEFINE_STATIC_CALL_TRAMP(name, _func)
+
+#define static_call(name)	__static_call(name)
+
+#define EXPORT_STATIC_CALL(name)					\
+	EXPORT_SYMBOL(STATIC_CALL_KEY(name));				\
+	EXPORT_SYMBOL(STATIC_CALL_TRAMP(name))
+
+#define EXPORT_STATIC_CALL_GPL(name)					\
+	EXPORT_SYMBOL_GPL(STATIC_CALL_KEY(name));			\
+	EXPORT_SYMBOL_GPL(STATIC_CALL_TRAMP(name))
+
+#elif defined(CONFIG_HAVE_STATIC_CALL)
 
 struct static_call_key {
 	void *func;
--- a/include/linux/static_call_types.h
+++ b/include/linux/static_call_types.h
@@ -2,14 +2,27 @@
 #ifndef _STATIC_CALL_TYPES_H
 #define _STATIC_CALL_TYPES_H
 
+#include <linux/types.h>
 #include <linux/stringify.h>
 
 #define STATIC_CALL_PREFIX		__SC__
+#define STATIC_CALL_PREFIX_STR		__stringify(STATIC_CALL_PREFIX)
+#define STATIC_CALL_PREFIX_LEN		(sizeof(STATIC_CALL_PREFIX_STR) - 1)
 #define STATIC_CALL_KEY(name)		__PASTE(STATIC_CALL_PREFIX, name)
 
 #define STATIC_CALL_TRAMP_PREFIX	__SCT__
 #define STATIC_CALL_TRAMP_PREFIX_STR	__stringify(STATIC_CALL_TRAMP_PREFIX)
+#define STATIC_CALL_TRAMP_PREFIX_LEN	(sizeof(STATIC_CALL_TRAMP_PREFIX_STR) - 1)
 #define STATIC_CALL_TRAMP(name)		__PASTE(STATIC_CALL_TRAMP_PREFIX, name)
 #define STATIC_CALL_TRAMP_STR(name)	__stringify(STATIC_CALL_TRAMP(name))
 
+/*
+ * The static call site table needs to be created by external tooling (objtool
+ * or a compiler plugin).
+ */
+struct static_call_site {
+	s32 addr;
+	s32 key;
+};
+
 #endif /* _STATIC_CALL_TYPES_H */
--- a/kernel/Makefile
+++ b/kernel/Makefile
@@ -108,6 +108,7 @@ obj-$(CONFIG_IRQ_WORK) += irq_work.o
 obj-$(CONFIG_CPU_PM) += cpu_pm.o
 obj-$(CONFIG_BPF) += bpf/
 obj-$(CONFIG_KCSAN) += kcsan/
+obj-$(CONFIG_HAVE_STATIC_CALL_INLINE) += static_call.o
 
 obj-$(CONFIG_PERF_EVENTS) += events/
 
--- a/kernel/module.c
+++ b/kernel/module.c
@@ -3194,6 +3194,11 @@ static int find_module_sections(struct m
 					    sizeof(*mod->ei_funcs),
 					    &mod->num_ei_funcs);
 #endif
+#ifdef CONFIG_HAVE_STATIC_CALL_INLINE
+	mod->static_call_sites = section_objs(info, ".static_call_sites",
+					      sizeof(*mod->static_call_sites),
+					      &mod->num_static_call_sites);
+#endif
 	mod->extable = section_objs(info, "__ex_table",
 				    sizeof(*mod->extable), &mod->num_exentries);
 
--- /dev/null
+++ b/kernel/static_call.c
@@ -0,0 +1,302 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <linux/init.h>
+#include <linux/static_call.h>
+#include <linux/bug.h>
+#include <linux/smp.h>
+#include <linux/sort.h>
+#include <linux/slab.h>
+#include <linux/module.h>
+#include <linux/cpu.h>
+#include <linux/processor.h>
+#include <asm/sections.h>
+
+extern struct static_call_site __start_static_call_sites[],
+			       __stop_static_call_sites[];
+
+static bool static_call_initialized;
+
+#define STATIC_CALL_INIT 1UL
+
+/* mutex to protect key modules/sites */
+static DEFINE_MUTEX(static_call_mutex);
+
+static void static_call_lock(void)
+{
+	mutex_lock(&static_call_mutex);
+}
+
+static void static_call_unlock(void)
+{
+	mutex_unlock(&static_call_mutex);
+}
+
+static inline void *static_call_addr(struct static_call_site *site)
+{
+	return (void *)((long)site->addr + (long)&site->addr);
+}
+
+
+static inline struct static_call_key *static_call_key(const struct static_call_site *site)
+{
+	return (struct static_call_key *)
+		(((long)site->key + (long)&site->key) & ~STATIC_CALL_INIT);
+}
+
+/* These assume the key is word-aligned. */
+static inline bool static_call_is_init(struct static_call_site *site)
+{
+	return ((long)site->key + (long)&site->key) & STATIC_CALL_INIT;
+}
+
+static inline void static_call_set_init(struct static_call_site *site)
+{
+	site->key = ((long)static_call_key(site) | STATIC_CALL_INIT) -
+		    (long)&site->key;
+}
+
+static int static_call_site_cmp(const void *_a, const void *_b)
+{
+	const struct static_call_site *a = _a;
+	const struct static_call_site *b = _b;
+	const struct static_call_key *key_a = static_call_key(a);
+	const struct static_call_key *key_b = static_call_key(b);
+
+	if (key_a < key_b)
+		return -1;
+
+	if (key_a > key_b)
+		return 1;
+
+	return 0;
+}
+
+static void static_call_site_swap(void *_a, void *_b, int size)
+{
+	long delta = (unsigned long)_a - (unsigned long)_b;
+	struct static_call_site *a = _a;
+	struct static_call_site *b = _b;
+	struct static_call_site tmp = *a;
+
+	a->addr = b->addr  - delta;
+	a->key  = b->key   - delta;
+
+	b->addr = tmp.addr + delta;
+	b->key  = tmp.key  + delta;
+}
+
+static inline void static_call_sort_entries(struct static_call_site *start,
+					    struct static_call_site *stop)
+{
+	sort(start, stop - start, sizeof(struct static_call_site),
+	     static_call_site_cmp, static_call_site_swap);
+}
+
+void __static_call_update(struct static_call_key *key, void *tramp, void *func)
+{
+	struct static_call_site *site, *stop;
+	struct static_call_mod *site_mod;
+
+	cpus_read_lock();
+	static_call_lock();
+
+	if (key->func == func)
+		goto done;
+
+	key->func = func;
+
+	arch_static_call_transform(NULL, tramp, func);
+
+	/*
+	 * If uninitialized, we'll not update the callsites, but they still
+	 * point to the trampoline and we just patched that.
+	 */
+	if (WARN_ON_ONCE(!static_call_initialized))
+		goto done;
+
+	for (site_mod = key->next; site_mod; site_mod = site_mod->next) {
+		if (!site_mod->sites) {
+			/*
+			 * This can happen if the static call key is defined in
+			 * a module which doesn't use it.
+			 */
+			continue;
+		}
+
+		stop = __stop_static_call_sites;
+
+#ifdef CONFIG_MODULES
+		if (site_mod->mod) {
+			stop = site_mod->mod->static_call_sites +
+			       site_mod->mod->num_static_call_sites;
+		}
+#endif
+
+		for (site = site_mod->sites;
+		     site < stop && static_call_key(site) == key; site++) {
+			void *site_addr = static_call_addr(site);
+			struct module *mod = site_mod->mod;
+
+			if (static_call_is_init(site)) {
+				/*
+				 * Don't write to call sites which were in
+				 * initmem and have since been freed.
+				 */
+				if (!mod && system_state >= SYSTEM_RUNNING)
+					continue;
+				if (mod && !within_module_init((unsigned long)site_addr, mod))
+					continue;
+			}
+
+			if (!kernel_text_address((unsigned long)site_addr)) {
+				WARN_ONCE(1, "can't patch static call site at %pS",
+					  site_addr);
+				continue;
+			}
+
+			arch_static_call_transform(site_addr, NULL, func);
+		}
+	}
+
+done:
+	static_call_unlock();
+	cpus_read_unlock();
+}
+EXPORT_SYMBOL_GPL(__static_call_update);
+
+static int __static_call_init(struct module *mod,
+			      struct static_call_site *start,
+			      struct static_call_site *stop)
+{
+	struct static_call_site *site;
+	struct static_call_key *key, *prev_key = NULL;
+	struct static_call_mod *site_mod;
+
+	if (start == stop)
+		return 0;
+
+	static_call_sort_entries(start, stop);
+
+	for (site = start; site < stop; site++) {
+		void *site_addr = static_call_addr(site);
+
+		if ((mod && within_module_init((unsigned long)site_addr, mod)) ||
+		    (!mod && init_section_contains(site_addr, 1)))
+			static_call_set_init(site);
+
+		key = static_call_key(site);
+		if (key != prev_key) {
+			prev_key = key;
+
+			site_mod = kzalloc(sizeof(*site_mod), GFP_KERNEL);
+			if (!site_mod)
+				return -ENOMEM;
+
+			site_mod->mod = mod;
+			site_mod->sites = site;
+			site_mod->next = key->next;
+			key->next = site_mod;
+		}
+
+		arch_static_call_transform(site_addr, NULL, key->func);
+	}
+
+	return 0;
+}
+
+#ifdef CONFIG_MODULES
+
+static int static_call_add_module(struct module *mod)
+{
+	return __static_call_init(mod, mod->static_call_sites,
+				  mod->static_call_sites + mod->num_static_call_sites);
+}
+
+static void static_call_del_module(struct module *mod)
+{
+	struct static_call_site *start = mod->static_call_sites;
+	struct static_call_site *stop = mod->static_call_sites +
+					mod->num_static_call_sites;
+	struct static_call_key *key, *prev_key = NULL;
+	struct static_call_mod *site_mod, **prev;
+	struct static_call_site *site;
+
+	for (site = start; site < stop; site++) {
+		key = static_call_key(site);
+		if (key == prev_key)
+			continue;
+
+		prev_key = key;
+
+		for (prev = &key->next, site_mod = key->next;
+		     site_mod && site_mod->mod != mod;
+		     prev = &site_mod->next, site_mod = site_mod->next)
+			;
+
+		if (!site_mod)
+			continue;
+
+		*prev = site_mod->next;
+		kfree(site_mod);
+	}
+}
+
+static int static_call_module_notify(struct notifier_block *nb,
+				     unsigned long val, void *data)
+{
+	struct module *mod = data;
+	int ret = 0;
+
+	cpus_read_lock();
+	static_call_lock();
+
+	switch (val) {
+	case MODULE_STATE_COMING:
+		ret = static_call_add_module(mod);
+		if (ret) {
+			WARN(1, "Failed to allocate memory for static calls");
+			static_call_del_module(mod);
+		}
+		break;
+	case MODULE_STATE_GOING:
+		static_call_del_module(mod);
+		break;
+	}
+
+	static_call_unlock();
+	cpus_read_unlock();
+
+	return notifier_from_errno(ret);
+}
+
+static struct notifier_block static_call_module_nb = {
+	.notifier_call = static_call_module_notify,
+};
+
+#endif /* CONFIG_MODULES */
+
+static void __init static_call_init(void)
+{
+	int ret;
+
+	if (static_call_initialized)
+		return;
+
+	cpus_read_lock();
+	static_call_lock();
+	ret = __static_call_init(NULL, __start_static_call_sites,
+				 __stop_static_call_sites);
+	static_call_unlock();
+	cpus_read_unlock();
+
+	if (ret) {
+		pr_err("Failed to allocate memory for static_call!\n");
+		BUG();
+	}
+
+	static_call_initialized = true;
+
+#ifdef CONFIG_MODULES
+	register_module_notifier(&static_call_module_nb);
+#endif
+}
+early_initcall(static_call_init);

Re: [PATCH v4 07/18] static_call: Add inline static call infrastructure

[Josh Poimboeuf]

On Fri, May 01, 2020 at 10:28:56PM +0200, Peter Zijlstra wrote:
> +#ifdef CONFIG_HAVE_STATIC_CALL_INLINE
> +
> +struct static_call_mod {
> +	struct static_call_mod *next;
> +	struct module *mod; /* for vmlinux, mod == NULL */
> +	struct static_call_site *sites;
> +};
> +
> +struct static_call_key {
> +	void *func;
> +	struct static_call_mod *next;
> +};

"next" implies it links to another key.  How about "mods" or
"site_mods"?

> +++ b/include/linux/static_call_types.h
> @@ -2,14 +2,27 @@
>  #ifndef _STATIC_CALL_TYPES_H
>  #define _STATIC_CALL_TYPES_H
>  
> +#include <linux/types.h>
>  #include <linux/stringify.h>
>  
>  #define STATIC_CALL_PREFIX		__SC__
> +#define STATIC_CALL_PREFIX_STR		__stringify(STATIC_CALL_PREFIX)
> +#define STATIC_CALL_PREFIX_LEN		(sizeof(STATIC_CALL_PREFIX_STR) - 1)

STATIC_CALL_KEY_PREFIX_STR
STATIC_CALL_KEY_PREFIX_LEN

> +void __static_call_update(struct static_call_key *key, void *tramp, void *func)
> +{
> +	struct static_call_site *site, *stop;
> +	struct static_call_mod *site_mod;
> +
> +	cpus_read_lock();
> +	static_call_lock();
> +
> +	if (key->func == func)
> +		goto done;
> +
> +	key->func = func;
> +
> +	arch_static_call_transform(NULL, tramp, func);
> +
> +	/*
> +	 * If uninitialized, we'll not update the callsites, but they still
> +	 * point to the trampoline and we just patched that.
> +	 */
> +	if (WARN_ON_ONCE(!static_call_initialized))
> +		goto done;
> +
> +	for (site_mod = key->next; site_mod; site_mod = site_mod->next) {
> +		if (!site_mod->sites) {
> +			/*
> +			 * This can happen if the static call key is defined in
> +			 * a module which doesn't use it.
> +			 */
> +			continue;
> +		}
> +
> +		stop = __stop_static_call_sites;
> +
> +#ifdef CONFIG_MODULES
> +		if (site_mod->mod) {
> +			stop = site_mod->mod->static_call_sites +
> +			       site_mod->mod->num_static_call_sites;
> +		}
> +#endif

Instead of defining 'mod' in the inner loop below, it can be set at the
top of the outer loop above.  Then the above 'stop' calculation can
be a little less verbose.

-- 
Josh

Re: [PATCH v4 07/18] static_call: Add inline static call infrastructure

[Peter Zijlstra]

On Tue, May 05, 2020 at 05:10:51PM -0500, Josh Poimboeuf wrote:
> On Fri, May 01, 2020 at 10:28:56PM +0200, Peter Zijlstra wrote:
> > +#ifdef CONFIG_HAVE_STATIC_CALL_INLINE
> > +
> > +struct static_call_mod {
> > +	struct static_call_mod *next;
> > +	struct module *mod; /* for vmlinux, mod == NULL */
> > +	struct static_call_site *sites;
> > +};
> > +
> > +struct static_call_key {
> > +	void *func;
> > +	struct static_call_mod *next;
> > +};
> 
> "next" implies it links to another key.  How about "mods" or
> "site_mods"?
> 
> > +++ b/include/linux/static_call_types.h
> > @@ -2,14 +2,27 @@
> >  #ifndef _STATIC_CALL_TYPES_H
> >  #define _STATIC_CALL_TYPES_H
> >  
> > +#include <linux/types.h>
> >  #include <linux/stringify.h>
> >  
> >  #define STATIC_CALL_PREFIX		__SC__
> > +#define STATIC_CALL_PREFIX_STR		__stringify(STATIC_CALL_PREFIX)
> > +#define STATIC_CALL_PREFIX_LEN		(sizeof(STATIC_CALL_PREFIX_STR) - 1)
> 
> STATIC_CALL_KEY_PREFIX_STR
> STATIC_CALL_KEY_PREFIX_LEN
> 

> > +#ifdef CONFIG_MODULES
> > +		if (site_mod->mod) {
> > +			stop = site_mod->mod->static_call_sites +
> > +			       site_mod->mod->num_static_call_sites;
> > +		}
> > +#endif
> 
> Instead of defining 'mod' in the inner loop below, it can be set at the
> top of the outer loop above.  Then the above 'stop' calculation can
> be a little less verbose.

All done!

[PATCH v4 08/18] static_call: Avoid kprobes on inline static_call()s

[Peter Zijlstra]

Similar to how we disallow kprobes on any other dynamic text
(ftrace/jump_label) also disallow kprobes on inline static_call()s.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
---
 arch/x86/kernel/kprobes/opt.c |    4 +-
 include/linux/static_call.h   |   11 +++++++
 kernel/kprobes.c              |    2 +
 kernel/static_call.c          |   64 ++++++++++++++++++++++++++++++++++++++++++
 4 files changed, 80 insertions(+), 1 deletion(-)

--- a/arch/x86/kernel/kprobes/opt.c
+++ b/arch/x86/kernel/kprobes/opt.c
@@ -16,6 +16,7 @@
 #include <linux/kallsyms.h>
 #include <linux/ftrace.h>
 #include <linux/frame.h>
+#include <linux/static_call.h>
 
 #include <asm/text-patching.h>
 #include <asm/cacheflush.h>
@@ -209,7 +210,8 @@ static int copy_optimized_instructions(u
 	/* Check whether the address range is reserved */
 	if (ftrace_text_reserved(src, src + len - 1) ||
 	    alternatives_text_reserved(src, src + len - 1) ||
-	    jump_label_text_reserved(src, src + len - 1))
+	    jump_label_text_reserved(src, src + len - 1) ||
+	    static_call_text_reserved(src, src + len - 1))
 		return -EBUSY;
 
 	return len;
--- a/include/linux/static_call.h
+++ b/include/linux/static_call.h
@@ -110,6 +110,7 @@ struct static_call_key {
 
 extern void __static_call_update(struct static_call_key *key, void *tramp, void *func);
 extern int static_call_mod_init(struct module *mod);
+extern int static_call_text_reserved(void *start, void *end);
 
 #define DEFINE_STATIC_CALL(name, _func)					\
 	DECLARE_STATIC_CALL(name, _func);				\
@@ -153,6 +154,11 @@ void __static_call_update(struct static_
 	cpus_read_unlock();
 }
 
+static inline int static_call_text_reserved(void *start, void *end)
+{
+	return 0;
+}
+
 #define EXPORT_STATIC_CALL(name)					\
 	EXPORT_SYMBOL(STATIC_CALL_KEY(name));				\
 	EXPORT_SYMBOL(STATIC_CALL_TRAMP(name))
@@ -182,6 +188,11 @@ void __static_call_update(struct static_
 	WRITE_ONCE(key->func, func);
 }
 
+static inline int static_call_text_reserved(void *start, void *end)
+{
+	return 0;
+}
+
 #define EXPORT_STATIC_CALL(name)	EXPORT_SYMBOL(STATIC_CALL_KEY(name))
 #define EXPORT_STATIC_CALL_GPL(name)	EXPORT_SYMBOL_GPL(STATIC_CALL_KEY(name))
 
--- a/kernel/kprobes.c
+++ b/kernel/kprobes.c
@@ -35,6 +35,7 @@
 #include <linux/ftrace.h>
 #include <linux/cpu.h>
 #include <linux/jump_label.h>
+#include <linux/static_call.h>
 
 #include <asm/sections.h>
 #include <asm/cacheflush.h>
@@ -1560,6 +1561,7 @@ static int check_kprobe_address_safe(str
 	if (!kernel_text_address((unsigned long) p->addr) ||
 	    within_kprobe_blacklist((unsigned long) p->addr) ||
 	    jump_label_text_reserved(p->addr, p->addr) ||
+	    static_call_text_reserved(p->addr, p->addr) ||
 	    find_bug((unsigned long)p->addr)) {
 		ret = -EINVAL;
 		goto out;
--- a/kernel/static_call.c
+++ b/kernel/static_call.c
@@ -203,8 +203,58 @@ static int __static_call_init(struct mod
 	return 0;
 }
 
+static int addr_conflict(struct static_call_site *site, void *start, void *end)
+{
+	unsigned long addr = (unsigned long)static_call_addr(site);
+
+	if (addr <= (unsigned long)end &&
+	    addr + CALL_INSN_SIZE > (unsigned long)start)
+		return 1;
+
+	return 0;
+}
+
+static int __static_call_text_reserved(struct static_call_site *iter_start,
+				       struct static_call_site *iter_stop,
+				       void *start, void *end)
+{
+	struct static_call_site *iter = iter_start;
+
+	while (iter < iter_stop) {
+		if (addr_conflict(iter, start, end))
+			return 1;
+		iter++;
+	}
+
+	return 0;
+}
+
 #ifdef CONFIG_MODULES
 
+static int __static_call_mod_text_reserved(void *start, void *end)
+{
+	struct module *mod;
+	int ret;
+
+	preempt_disable();
+	mod = __module_text_address((unsigned long)start);
+	WARN_ON_ONCE(__module_text_address((unsigned long)end) != mod);
+	if (!try_module_get(mod))
+		mod = NULL;
+	preempt_enable();
+
+	if (!mod)
+		return 0;
+
+	ret = __static_call_text_reserved(mod->static_call_sites,
+			mod->static_call_sites + mod->num_static_call_sites,
+			start, end);
+
+	module_put(mod);
+
+	return ret;
+}
+
 static int static_call_add_module(struct module *mod)
 {
 	return __static_call_init(mod, mod->static_call_sites,
@@ -274,6 +324,20 @@ static struct notifier_block static_call
 
 #endif /* CONFIG_MODULES */
 
+int static_call_text_reserved(void *start, void *end)
+{
+	int ret = __static_call_text_reserved(__start_static_call_sites,
+			__stop_static_call_sites, start, end);
+
+	if (ret)
+		return ret;
+
+#ifdef CONFIG_MODULES
+	ret = __static_call_mod_text_reserved(start, end);
+#endif
+	return ret;
+}
+
 static void __init static_call_init(void)
 {
 	int ret;

[PATCH v4 09/18] x86/static_call: Add out-of-line static call implementation

[Peter Zijlstra]

From: Josh Poimboeuf <jpoimboe@redhat.com>

Add the x86 out-of-line static call implementation.  For each key, a
permanent trampoline is created which is the destination for all static
calls for the given key.  The trampoline has a direct jump which gets
patched by static_call_update() when the destination function changes.

Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
[peterz: fixed trampoline, rewrote patching code]
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
---
 arch/x86/Kconfig                   |    1 +
 arch/x86/include/asm/static_call.h |   22 ++++++++++++++++++++++
 arch/x86/kernel/Makefile           |    1 +
 arch/x86/kernel/static_call.c      |   31 +++++++++++++++++++++++++++++++
 4 files changed, 55 insertions(+)
 create mode 100644 arch/x86/include/asm/static_call.h
 create mode 100644 arch/x86/kernel/static_call.c

--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -205,6 +205,7 @@ config X86
 	select HAVE_FUNCTION_ARG_ACCESS_API
 	select HAVE_STACKPROTECTOR		if CC_HAS_SANE_STACKPROTECTOR
 	select HAVE_STACK_VALIDATION		if X86_64
+	select HAVE_STATIC_CALL
 	select HAVE_RSEQ
 	select HAVE_SYSCALL_TRACEPOINTS
 	select HAVE_UNSTABLE_SCHED_CLOCK
--- /dev/null
+++ b/arch/x86/include/asm/static_call.h
@@ -0,0 +1,22 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _ASM_STATIC_CALL_H
+#define _ASM_STATIC_CALL_H
+
+#include <asm/text-patching.h>
+
+/*
+ * For CONFIG_HAVE_STATIC_CALL, this is a permanent trampoline which
+ * does a direct jump to the function.  The direct jump gets patched by
+ * static_call_update().
+ */
+#define ARCH_DEFINE_STATIC_CALL_TRAMP(name, func)			\
+	asm(".pushsection .text, \"ax\"				\n"	\
+	    ".align 4						\n"	\
+	    ".globl " STATIC_CALL_TRAMP_STR(name) "		\n"	\
+	    STATIC_CALL_TRAMP_STR(name) ":			\n"	\
+	    "	jmp.d32 " #func "				\n"	\
+	    ".type " STATIC_CALL_TRAMP_STR(name) ", @function	\n"	\
+	    ".size " STATIC_CALL_TRAMP_STR(name) ", . - " STATIC_CALL_TRAMP_STR(name) " \n" \
+	    ".popsection					\n")
+
+#endif /* _ASM_STATIC_CALL_H */
--- a/arch/x86/kernel/Makefile
+++ b/arch/x86/kernel/Makefile
@@ -63,6 +63,7 @@ obj-y			+= tsc.o tsc_msr.o io_delay.o rt
 obj-y			+= pci-iommu_table.o
 obj-y			+= resource.o
 obj-y			+= irqflags.o
+obj-y			+= static_call.o
 
 obj-y				+= process.o
 obj-y				+= fpu/
--- /dev/null
+++ b/arch/x86/kernel/static_call.c
@@ -0,0 +1,31 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <linux/static_call.h>
+#include <linux/memory.h>
+#include <linux/bug.h>
+#include <asm/text-patching.h>
+
+static void __static_call_transform(void *insn, u8 opcode, void *func)
+{
+	const void *code = text_gen_insn(opcode, (long)insn, (long)func);
+
+	if (WARN_ONCE(*(u8 *)insn != opcode,
+		      "unexpected static call insn opcode 0x%x at %pS\n",
+		      opcode, insn))
+		return;
+
+	if (memcmp(insn, code, CALL_INSN_SIZE) == 0)
+		return;
+
+	text_poke_bp(insn, code, CALL_INSN_SIZE, NULL);
+}
+
+void arch_static_call_transform(void *site, void *tramp, void *func)
+{
+	mutex_lock(&text_mutex);
+
+	if (tramp)
+		__static_call_transform(tramp, JMP32_INSN_OPCODE, func);
+
+	mutex_unlock(&text_mutex);
+}
+EXPORT_SYMBOL_GPL(arch_static_call_transform);

Re: [PATCH v4 09/18] x86/static_call: Add out-of-line static call implementation

[Peter Zijlstra]

On Fri, May 01, 2020 at 10:28:58PM +0200, Peter Zijlstra wrote:

> +#define ARCH_DEFINE_STATIC_CALL_TRAMP(name, func)			\
> +	asm(".pushsection .text, \"ax\"				\n"	\
> +	    ".align 4						\n"	\
> +	    ".globl " STATIC_CALL_TRAMP_STR(name) "		\n"	\
> +	    STATIC_CALL_TRAMP_STR(name) ":			\n"	\
> +	    "	jmp.d32 " #func "				\n"	\

I remembered Nick asked this to be .byte 0xe9; .long #func - (.+4); last
time, now done.

> +	    ".type " STATIC_CALL_TRAMP_STR(name) ", @function	\n"	\
> +	    ".size " STATIC_CALL_TRAMP_STR(name) ", . - " STATIC_CALL_TRAMP_STR(name) " \n" \
> +	    ".popsection					\n")

[PATCH v4 10/18] x86/static_call: Add inline static call implementation for x86-64

[Peter Zijlstra]

From: Josh Poimboeuf <jpoimboe@redhat.com>

Add the inline static call implementation for x86-64. The generated code
is identical to the out-of-line case, except we move the trampoline into
it's own section.

Objtool uses the trampoline naming convention to detect all the call
sites. It then annotates those call sites in the .static_call_sites
section.

During boot (and module init), the call sites are patched to call
directly into the destination function.  The temporary trampoline is
then no longer used.

[peterz: merged trampolines, put trampoline in section]
Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
---
 arch/x86/Kconfig                        |    3 
 arch/x86/include/asm/static_call.h      |   13 ++-
 arch/x86/kernel/static_call.c           |    5 -
 arch/x86/kernel/vmlinux.lds.S           |    1 
 include/asm-generic/vmlinux.lds.h       |    6 +
 tools/include/linux/static_call_types.h |   28 ++++++
 tools/objtool/check.c                   |  130 +++++++++++++++++++++++++++++++-
 tools/objtool/check.h                   |    2 
 tools/objtool/elf.c                     |    6 -
 tools/objtool/elf.h                     |    3 
 tools/objtool/orc_gen.c                 |    4 
 tools/objtool/sync-check.sh             |    1 
 12 files changed, 192 insertions(+), 10 deletions(-)
 create mode 100644 tools/objtool/include/linux/static_call_types.h

--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -211,6 +211,7 @@ config X86
 	select HAVE_STACKPROTECTOR		if CC_HAS_SANE_STACKPROTECTOR
 	select HAVE_STACK_VALIDATION		if X86_64
 	select HAVE_STATIC_CALL
+	select HAVE_STATIC_CALL_INLINE		if HAVE_STACK_VALIDATION
 	select HAVE_RSEQ
 	select HAVE_SYSCALL_TRACEPOINTS
 	select HAVE_UNSTABLE_SCHED_CLOCK
@@ -226,6 +227,7 @@ config X86
 	select RTC_MC146818_LIB
 	select SPARSE_IRQ
 	select SRCU
+	select STACK_VALIDATION			if HAVE_STACK_VALIDATION && (HAVE_STATIC_CALL_INLINE || RETPOLINE)
 	select SYSCTL_EXCEPTION_TRACE
 	select THREAD_INFO_IN_TASK
 	select USER_STACKTRACE_SUPPORT
@@ -446,7 +448,6 @@ config GOLDFISH
 config RETPOLINE
 	bool "Avoid speculative indirect branches in kernel"
 	default y
-	select STACK_VALIDATION if HAVE_STACK_VALIDATION
 	help
 	  Compile kernel with the retpoline compiler options to guard against
 	  kernel-to-user data leaks by avoiding speculative indirect
--- a/arch/x86/include/asm/static_call.h
+++ b/arch/x86/include/asm/static_call.h
@@ -5,12 +5,23 @@
 #include <asm/text-patching.h>
 
 /*
+ * For CONFIG_HAVE_STATIC_CALL_INLINE, this is a temporary trampoline which
+ * uses the current value of the key->func pointer to do an indirect jump to
+ * the function.  This trampoline is only used during boot, before the call
+ * sites get patched by static_call_update().  The name of this trampoline has
+ * a magical aspect: objtool uses it to find static call sites so it can create
+ * the .static_call_sites section.
+ *
  * For CONFIG_HAVE_STATIC_CALL, this is a permanent trampoline which
  * does a direct jump to the function.  The direct jump gets patched by
  * static_call_update().
+ *
+ * Having the trampoline in a special section forces GCC to emit a JMP.d32 when
+ * it does tail-call optimization on the call; since you cannot compute the
+ * relative displacement across sections.
  */
 #define ARCH_DEFINE_STATIC_CALL_TRAMP(name, func)			\
-	asm(".pushsection .text, \"ax\"				\n"	\
+	asm(".pushsection .static_call.text, \"ax\"		\n"	\
 	    ".align 4						\n"	\
 	    ".globl " STATIC_CALL_TRAMP_STR(name) "		\n"	\
 	    STATIC_CALL_TRAMP_STR(name) ":			\n"	\
--- a/arch/x86/kernel/static_call.c
+++ b/arch/x86/kernel/static_call.c
@@ -6,7 +6,7 @@
 
 static void __static_call_transform(void *insn, u8 opcode, void *func)
 {
-	const void *code = text_gen_insn(opcode, (long)insn, (long)func);
+	const void *code = text_gen_insn(opcode, insn, func);
 
 	if (WARN_ONCE(*(u8 *)insn != opcode,
 		      "unexpected static call insn opcode 0x%x at %pS\n",
@@ -26,6 +26,9 @@ void arch_static_call_transform(void *si
 	if (tramp)
 		__static_call_transform(tramp, JMP32_INSN_OPCODE, func);
 
+	if (IS_ENABLED(CONFIG_HAVE_STATIC_CALL_INLINE) && site)
+		__static_call_transform(site, CALL_INSN_OPCODE, func);
+
 	mutex_unlock(&text_mutex);
 }
 EXPORT_SYMBOL_GPL(arch_static_call_transform);
--- a/arch/x86/kernel/vmlinux.lds.S
+++ b/arch/x86/kernel/vmlinux.lds.S
@@ -137,6 +137,7 @@ SECTIONS
 		IRQENTRY_TEXT
 		ALIGN_ENTRY_TEXT_END
 		SOFTIRQENTRY_TEXT
+		STATIC_CALL_TEXT
 		*(.fixup)
 		*(.gnu.warning)
 
--- a/include/asm-generic/vmlinux.lds.h
+++ b/include/asm-generic/vmlinux.lds.h
@@ -610,6 +610,12 @@
 		*(.softirqentry.text)					\
 		__softirqentry_text_end = .;
 
+#define STATIC_CALL_TEXT						\
+		ALIGN_FUNCTION();					\
+		__static_call_text_start = .;				\
+		*(.static_call.text)					\
+		__static_call_text_end = .;
+
 /* Section used for early init (in .S files) */
 #define HEAD_TEXT  KEEP(*(.head.text))
 
--- /dev/null
+++ b/tools/include/linux/static_call_types.h
@@ -0,0 +1,28 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _STATIC_CALL_TYPES_H
+#define _STATIC_CALL_TYPES_H
+
+#include <linux/types.h>
+#include <linux/stringify.h>
+
+#define STATIC_CALL_PREFIX		__SC__
+#define STATIC_CALL_PREFIX_STR		__stringify(STATIC_CALL_PREFIX)
+#define STATIC_CALL_PREFIX_LEN		(sizeof(STATIC_CALL_PREFIX_STR) - 1)
+#define STATIC_CALL_KEY(name)		__PASTE(STATIC_CALL_PREFIX, name)
+
+#define STATIC_CALL_TRAMP_PREFIX	__SCT__
+#define STATIC_CALL_TRAMP_PREFIX_STR	__stringify(STATIC_CALL_TRAMP_PREFIX)
+#define STATIC_CALL_TRAMP_PREFIX_LEN	(sizeof(STATIC_CALL_TRAMP_PREFIX_STR) - 1)
+#define STATIC_CALL_TRAMP(name)		__PASTE(STATIC_CALL_TRAMP_PREFIX, name)
+#define STATIC_CALL_TRAMP_STR(name)	__stringify(STATIC_CALL_TRAMP(name))
+
+/*
+ * The static call site table needs to be created by external tooling (objtool
+ * or a compiler plugin).
+ */
+struct static_call_site {
+	s32 addr;
+	s32 key;
+};
+
+#endif /* _STATIC_CALL_TYPES_H */
--- a/tools/objtool/check.c
+++ b/tools/objtool/check.c
@@ -15,6 +15,7 @@
 
 #include <linux/hashtable.h>
 #include <linux/kernel.h>
+#include <linux/static_call_types.h>
 
 #define FAKE_JUMP_OFFSET -1
 
@@ -423,6 +424,99 @@ static int add_dead_ends(struct objtool_
 	return 0;
 }
 
+static int create_static_call_sections(struct objtool_file *file)
+{
+	struct section *sec, *rela_sec;
+	struct rela *rela;
+	struct static_call_site *site;
+	struct instruction *insn;
+	struct symbol *key_sym;
+	char *key_name, *tmp;
+	int idx;
+
+	sec = find_section_by_name(file->elf, ".static_call_sites");
+	if (sec) {
+		INIT_LIST_HEAD(&file->static_call_list);
+		WARN("file already has .static_call_sites section, skipping");
+		return 0;
+	}
+
+	if (list_empty(&file->static_call_list))
+		return 0;
+
+	idx = 0;
+	list_for_each_entry(insn, &file->static_call_list, static_call_node)
+		idx++;
+
+	sec = elf_create_section(file->elf, ".static_call_sites", SHF_WRITE,
+				 sizeof(struct static_call_site), idx);
+	if (!sec)
+		return -1;
+
+	rela_sec = elf_create_rela_section(file->elf, sec);
+	if (!rela_sec)
+		return -1;
+
+	idx = 0;
+	list_for_each_entry(insn, &file->static_call_list, static_call_node) {
+
+		site = (struct static_call_site *)sec->data->d_buf + idx;
+		memset(site, 0, sizeof(struct static_call_site));
+
+		/* populate rela for 'addr' */
+		rela = malloc(sizeof(*rela));
+		if (!rela) {
+			perror("malloc");
+			return -1;
+		}
+		memset(rela, 0, sizeof(*rela));
+		rela->sym = insn->sec->sym;
+		rela->addend = insn->offset;
+		rela->type = R_X86_64_PC32;
+		rela->offset = idx * sizeof(struct static_call_site);
+		rela->sec = rela_sec;
+		elf_add_rela(file->elf, rela);
+
+		/* find key symbol */
+		key_name = strdup(insn->call_dest->name);
+		if (strncmp(key_name, STATIC_CALL_TRAMP_PREFIX_STR,
+			    strlen(STATIC_CALL_TRAMP_PREFIX_STR))) {
+			WARN("static_call: trampoline name malformed: %s", key_name);
+			return -1;
+		}
+		tmp = key_name + STATIC_CALL_TRAMP_PREFIX_LEN - STATIC_CALL_PREFIX_LEN;
+		memcpy(tmp, STATIC_CALL_PREFIX_STR, STATIC_CALL_PREFIX_LEN);
+
+		key_sym = find_symbol_by_name(file->elf, tmp);
+		if (!key_sym) {
+			WARN("static_call: can't find static_call_key symbol: %s", tmp);
+			return -1;
+		}
+		free(key_name);
+
+		/* populate rela for 'key' */
+		rela = malloc(sizeof(*rela));
+		if (!rela) {
+			perror("malloc");
+			return -1;
+		}
+		memset(rela, 0, sizeof(*rela));
+		rela->sym = key_sym;
+		rela->addend = 0;
+		rela->type = R_X86_64_PC32;
+		rela->offset = idx * sizeof(struct static_call_site) + 4;
+		rela->sec = rela_sec;
+		elf_add_rela(file->elf, rela);
+
+		idx++;
+	}
+
+	if (elf_rebuild_rela_section(rela_sec))
+		return -1;
+
+	return 0;
+}
+
 /*
  * Warnings shouldn't be reported for ignored functions.
  */
@@ -1471,6 +1565,23 @@ static int read_intra_function_calls(str
 	return 0;
 }
 
+static int read_static_call_tramps(struct objtool_file *file)
+{
+	struct section *sec;
+	struct symbol *func;
+
+	for_each_sec(file, sec) {
+		list_for_each_entry(func, &sec->symbol_list, list) {
+			if (func->bind == STB_GLOBAL &&
+			    !strncmp(func->name, STATIC_CALL_TRAMP_PREFIX_STR,
+				     strlen(STATIC_CALL_TRAMP_PREFIX_STR)))
+				func->static_call_tramp = true;
+		}
+	}
+
+	return 0;
+}
+
 static void mark_rodata(struct objtool_file *file)
 {
 	struct section *sec;
@@ -1550,6 +1661,10 @@ static int decode_sections(struct objtoo
 	if (ret)
 		return ret;
 
+	ret = read_static_call_tramps(file);
+	if (ret)
+		return ret;
+
 	return 0;
 }
 
@@ -2354,6 +2469,11 @@ static int validate_branch(struct objtoo
 			if (dead_end_function(file, insn->call_dest))
 				return 0;
 
+			if (insn->type == INSN_CALL && insn->call_dest->static_call_tramp) {
+				list_add_tail(&insn->static_call_node,
+					      &file->static_call_list);
+			}
+
 			break;
 
 		case INSN_JUMP_CONDITIONAL:
@@ -2707,12 +2827,13 @@ int check(const char *_objname, bool orc
 
 	objname = _objname;
 
-	file.elf = elf_open_read(objname, orc ? O_RDWR : O_RDONLY);
+	file.elf = elf_open_read(objname, O_RDWR);
 	if (!file.elf)
 		return 1;
 
 	INIT_LIST_HEAD(&file.insn_list);
 	hash_init(file.insn_hash);
+	INIT_LIST_HEAD(&file.static_call_list);
 	file.c_file = find_section_by_name(file.elf, ".comment");
 	file.ignore_unreachables = no_unreachable;
 	file.hints = false;
@@ -2760,6 +2881,11 @@ int check(const char *_objname, bool orc
 		warnings += ret;
 	}
 
+	ret = create_static_call_sections(&file);
+	if (ret < 0)
+		goto out;
+	warnings += ret;
+
 	if (orc) {
 		ret = create_orc(&file);
 		if (ret < 0)
@@ -2768,7 +2894,9 @@ int check(const char *_objname, bool orc
 		ret = create_orc_sections(&file);
 		if (ret < 0)
 			goto out;
+	}
 
+	if (orc || !list_empty(&file.static_call_list)) {
 		ret = elf_write(file.elf);
 		if (ret < 0)
 			goto out;
--- a/tools/objtool/check.h
+++ b/tools/objtool/check.h
@@ -25,6 +25,7 @@ struct insn_state {
 struct instruction {
 	struct list_head list;
 	struct hlist_node hash;
+	struct list_head static_call_node;
 	struct section *sec;
 	unsigned long offset;
 	unsigned int len;
@@ -52,6 +53,7 @@ struct objtool_file {
 	struct elf *elf;
 	struct list_head insn_list;
 	DECLARE_HASHTABLE(insn_hash, 20);
+	struct list_head static_call_list;
 	bool ignore_unreachables, c_file, hints, rodata;
 };
 
--- a/tools/objtool/elf.c
+++ b/tools/objtool/elf.c
@@ -606,7 +606,7 @@ struct elf *elf_open_read(const char *na
 }
 
 struct section *elf_create_section(struct elf *elf, const char *name,
-				   size_t entsize, int nr)
+				   unsigned int sh_flags, size_t entsize, int nr)
 {
 	struct section *sec, *shstrtab;
 	size_t size = entsize * nr;
@@ -666,7 +666,7 @@ struct section *elf_create_section(struc
 	sec->sh.sh_entsize = entsize;
 	sec->sh.sh_type = SHT_PROGBITS;
 	sec->sh.sh_addralign = 1;
-	sec->sh.sh_flags = SHF_ALLOC;
+	sec->sh.sh_flags = SHF_ALLOC | sh_flags;
 
 
 	/* Add section name to .shstrtab (or .strtab for Clang) */
@@ -719,7 +719,7 @@ struct section *elf_create_rela_section(
 	strcpy(relaname, ".rela");
 	strcat(relaname, base->name);
 
-	sec = elf_create_section(elf, relaname, sizeof(GElf_Rela), 0);
+	sec = elf_create_section(elf, relaname, 0, sizeof(GElf_Rela), 0);
 	free(relaname);
 	if (!sec)
 		return NULL;
--- a/tools/objtool/elf.h
+++ b/tools/objtool/elf.h
@@ -56,6 +56,7 @@ struct symbol {
 	unsigned int len;
 	struct symbol *pfunc, *cfunc, *alias;
 	bool uaccess_safe;
+	bool static_call_tramp;
 };
 
 struct rela {
@@ -114,7 +115,7 @@ static inline u32 rela_hash(struct rela
 }
 
 struct elf *elf_open_read(const char *name, int flags);
-struct section *elf_create_section(struct elf *elf, const char *name, size_t entsize, int nr);
+struct section *elf_create_section(struct elf *elf, const char *name, unsigned int sh_flags, size_t entsize, int nr);
 struct section *elf_create_rela_section(struct elf *elf, struct section *base);
 void elf_add_rela(struct elf *elf, struct rela *rela);
 int elf_write(const struct elf *elf);
--- a/tools/objtool/orc_gen.c
+++ b/tools/objtool/orc_gen.c
@@ -178,7 +178,7 @@ int create_orc_sections(struct objtool_f
 
 
 	/* create .orc_unwind_ip and .rela.orc_unwind_ip sections */
-	sec = elf_create_section(file->elf, ".orc_unwind_ip", sizeof(int), idx);
+	sec = elf_create_section(file->elf, ".orc_unwind_ip", 0, sizeof(int), idx);
 	if (!sec)
 		return -1;
 
@@ -187,7 +187,7 @@ int create_orc_sections(struct objtool_f
 		return -1;
 
 	/* create .orc_unwind section */
-	u_sec = elf_create_section(file->elf, ".orc_unwind",
+	u_sec = elf_create_section(file->elf, ".orc_unwind", 0,
 				   sizeof(struct orc_entry), idx);
 
 	/* populate sections */
--- a/tools/objtool/sync-check.sh
+++ b/tools/objtool/sync-check.sh
@@ -7,6 +7,7 @@ arch/x86/include/asm/orc_types.h
 arch/x86/include/asm/emulate_prefix.h
 arch/x86/lib/x86-opcode-map.txt
 arch/x86/tools/gen-insn-attr-x86.awk
+include/linux/static_call_types.h
 '
 
 check_2 () {

[PATCH v4 11/18] static_call: Simple self-test

[Peter Zijlstra]

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
---
 arch/Kconfig         |    6 ++++++
 kernel/static_call.c |   28 ++++++++++++++++++++++++++++
 2 files changed, 34 insertions(+)

--- a/arch/Kconfig
+++ b/arch/Kconfig
@@ -103,6 +103,12 @@ config STATIC_KEYS_SELFTEST
 	help
 	  Boot time self-test of the branch patching code.
 
+config STATIC_CALL_SELFTEST
+	bool "Static call selftest"
+	depends on HAVE_STATIC_CALL
+	help
+	  Boot time self-test of the call patching code.
+
 config OPTPROBES
 	def_bool y
 	depends on KPROBES && HAVE_OPTPROBES
--- a/kernel/static_call.c
+++ b/kernel/static_call.c
@@ -364,3 +364,31 @@ static void __init static_call_init(void
 #endif
 }
 early_initcall(static_call_init);
+
+#ifdef CONFIG_STATIC_CALL_SELFTEST
+
+static int func_a(int x)
+{
+	return x+1;
+}
+
+static int func_b(int x)
+{
+	return x+2;
+}
+
+DEFINE_STATIC_CALL(sc_selftest, func_a);
+
+static int __init test_static_call_init(void)
+{
+	WARN_ON(static_call(sc_selftest)(2) != 3);
+	static_call_update(sc_selftest, &func_b);
+	WARN_ON(static_call(sc_selftest)(2) != 4);
+	static_call_update(sc_selftest, &func_a);
+	WARN_ON(static_call(sc_selftest)(2) != 3);
+
+	return 0;
+}
+early_initcall(test_static_call_init);
+
+#endif /* CONFIG_STATIC_CALL_SELFTEST */

[PATCH v4 12/18] tracepoint: Optimize using static_call()

[Peter Zijlstra]

From: "Steven Rostedt (VMware)" <rostedt@goodmis.org>

Currently the tracepoint site will iterate a vector and issue indirect
calls to however many handlers are registered (ie. the vector is
long).

Using static_call() it is possible to optimize this for the common
case of only having a single handler registered. In this case the
static_call() can directly call this handler. Otherwise, if the vector
is longer than 1, call a function that iterates the whole vector like
the current code.

[peterz: updated to new interface]
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
---
 include/linux/tracepoint-defs.h |    5 ++
 include/linux/tracepoint.h      |   84 ++++++++++++++++++++++++++++------------
 include/trace/define_trace.h    |   14 +++---
 kernel/tracepoint.c             |   21 ++++++++--
 4 files changed, 88 insertions(+), 36 deletions(-)

--- a/include/linux/tracepoint-defs.h
+++ b/include/linux/tracepoint-defs.h
@@ -11,6 +11,8 @@
 #include <linux/atomic.h>
 #include <linux/static_key.h>
 
+struct static_call_key;
+
 struct trace_print_flags {
 	unsigned long		mask;
 	const char		*name;
@@ -30,6 +32,9 @@ struct tracepoint_func {
 struct tracepoint {
 	const char *name;		/* Tracepoint name */
 	struct static_key key;
+	struct static_call_key *static_call_key;
+	void *static_call_tramp;
+	void *iterator;
 	int (*regfunc)(void);
 	void (*unregfunc)(void);
 	struct tracepoint_func __rcu *funcs;
--- a/include/linux/tracepoint.h
+++ b/include/linux/tracepoint.h
@@ -19,6 +19,7 @@
 #include <linux/cpumask.h>
 #include <linux/rcupdate.h>
 #include <linux/tracepoint-defs.h>
+#include <linux/static_call.h>
 
 struct module;
 struct tracepoint;
@@ -92,7 +93,9 @@ extern int syscall_regfunc(void);
 extern void syscall_unregfunc(void);
 #endif /* CONFIG_HAVE_SYSCALL_TRACEPOINTS */
 
+#ifndef PARAMS
 #define PARAMS(args...) args
+#endif
 
 #define TRACE_DEFINE_ENUM(x)
 #define TRACE_DEFINE_SIZEOF(x)
@@ -149,6 +152,12 @@ static inline struct tracepoint *tracepo
 
 #ifdef TRACEPOINTS_ENABLED
 
+#ifdef CONFIG_HAVE_STATIC_CALL
+#define __DO_TRACE_CALL(name)	static_call(tp_func_##name)
+#else
+#define __DO_TRACE_CALL(name)	__tracepoint_iter_##name
+#endif /* CONFIG_HAVE_STATIC_CALL */
+
 /*
  * it_func[0] is never NULL because there is at least one element in the array
  * when the array itself is non NULL.
@@ -158,12 +167,11 @@ static inline struct tracepoint *tracepo
  * has a "void" prototype, then it is invalid to declare a function
  * as "(void *, void)".
  */
-#define __DO_TRACE(tp, proto, args, cond, rcuidle)			\
+#define __DO_TRACE(name, proto, args, cond, rcuidle)			\
 	do {								\
 		struct tracepoint_func *it_func_ptr;			\
-		void *it_func;						\
-		void *__data;						\
 		int __maybe_unused __idx = 0;				\
+		void *__data;						\
 									\
 		if (!(cond))						\
 			return;						\
@@ -183,14 +191,11 @@ static inline struct tracepoint *tracepo
 			rcu_irq_enter_irqson();				\
 		}							\
 									\
-		it_func_ptr = rcu_dereference_raw((tp)->funcs);		\
-									\
+		it_func_ptr =						\
+			rcu_dereference_raw((&__tracepoint_##name)->funcs); \
 		if (it_func_ptr) {					\
-			do {						\
-				it_func = (it_func_ptr)->func;		\
-				__data = (it_func_ptr)->data;		\
-				((void(*)(proto))(it_func))(args);	\
-			} while ((++it_func_ptr)->func);		\
+			__data = (it_func_ptr)->data;			\
+			__DO_TRACE_CALL(name)(args);			\
 		}							\
 									\
 		if (rcuidle) {						\
@@ -206,7 +211,7 @@ static inline struct tracepoint *tracepo
 	static inline void trace_##name##_rcuidle(proto)		\
 	{								\
 		if (static_key_false(&__tracepoint_##name.key))		\
-			__DO_TRACE(&__tracepoint_##name,		\
+			__DO_TRACE(name,				\
 				TP_PROTO(data_proto),			\
 				TP_ARGS(data_args),			\
 				TP_CONDITION(cond), 1);			\
@@ -228,11 +233,13 @@ static inline struct tracepoint *tracepo
  * poking RCU a bit.
  */
 #define __DECLARE_TRACE(name, proto, args, cond, data_proto, data_args) \
+	extern int __tracepoint_iter_##name(data_proto);		\
+	DECLARE_STATIC_CALL(tp_func_##name, __tracepoint_iter_##name); \
 	extern struct tracepoint __tracepoint_##name;			\
 	static inline void trace_##name(proto)				\
 	{								\
 		if (static_key_false(&__tracepoint_##name.key))		\
-			__DO_TRACE(&__tracepoint_##name,		\
+			__DO_TRACE(name,				\
 				TP_PROTO(data_proto),			\
 				TP_ARGS(data_args),			\
 				TP_CONDITION(cond), 0);			\
@@ -278,21 +285,48 @@ static inline struct tracepoint *tracepo
  * structures, so we create an array of pointers that will be used for iteration
  * on the tracepoints.
  */
-#define DEFINE_TRACE_FN(name, reg, unreg)				 \
-	static const char __tpstrtab_##name[]				 \
-	__attribute__((section("__tracepoints_strings"))) = #name;	 \
-	struct tracepoint __tracepoint_##name				 \
-	__attribute__((section("__tracepoints"), used)) =		 \
-		{ __tpstrtab_##name, STATIC_KEY_INIT_FALSE, reg, unreg, NULL };\
-	__TRACEPOINT_ENTRY(name);
+#define DEFINE_TRACE_FN(_name, _reg, _unreg, proto, args)		\
+	static const char __tpstrtab_##_name[]				\
+	__attribute__((section("__tracepoints_strings"))) = #_name;	\
+	extern struct static_call_key STATIC_CALL_KEY(tp_func_##_name);\
+	int __tracepoint_iter_##_name(void *__data, proto);		\
+	struct tracepoint __tracepoint_##_name				\
+	  __attribute__((section("__tracepoints"), used)) = {		\
+		.name = __tpstrtab_##_name,				\
+		.key = STATIC_KEY_INIT_FALSE,				\
+		.static_call_key = &STATIC_CALL_KEY(tp_func_##_name),	\
+		.static_call_tramp = STATIC_CALL_TRAMP_ADDR(tp_func_##_name), \
+		.iterator = &__tracepoint_iter_##_name,			\
+		.regfunc = _reg,					\
+		.unregfunc = _unreg,					\
+		.funcs = NULL };					\
+	__TRACEPOINT_ENTRY(_name);					\
+	int __tracepoint_iter_##_name(void *__data, proto)		\
+	{								\
+		struct tracepoint_func *it_func_ptr;			\
+		void *it_func;						\
+									\
+		it_func_ptr =						\
+			rcu_dereference_raw((&__tracepoint_##_name)->funcs); \
+		do {							\
+			it_func = (it_func_ptr)->func;			\
+			__data = (it_func_ptr)->data;			\
+			((void(*)(void *, proto))(it_func))(__data, args); \
+		} while ((++it_func_ptr)->func);			\
+		return 0;						\
+	}								\
+	DEFINE_STATIC_CALL(tp_func_##_name, __tracepoint_iter_##_name);
 
-#define DEFINE_TRACE(name)						\
-	DEFINE_TRACE_FN(name, NULL, NULL);
+#define DEFINE_TRACE(name, proto, args)		\
+	DEFINE_TRACE_FN(name, NULL, NULL, PARAMS(proto), PARAMS(args));
 
 #define EXPORT_TRACEPOINT_SYMBOL_GPL(name)				\
-	EXPORT_SYMBOL_GPL(__tracepoint_##name)
+	EXPORT_SYMBOL_GPL(__tracepoint_##name);				\
+	EXPORT_STATIC_CALL_GPL(tp_func_##name)
 #define EXPORT_TRACEPOINT_SYMBOL(name)					\
-	EXPORT_SYMBOL(__tracepoint_##name)
+	EXPORT_SYMBOL(__tracepoint_##name);				\
+	EXPORT_STATIC_CALL(tp_func_##name)
+
 
 #else /* !TRACEPOINTS_ENABLED */
 #define __DECLARE_TRACE(name, proto, args, cond, data_proto, data_args) \
@@ -321,8 +355,8 @@ static inline struct tracepoint *tracepo
 		return false;						\
 	}
 
-#define DEFINE_TRACE_FN(name, reg, unreg)
-#define DEFINE_TRACE(name)
+#define DEFINE_TRACE_FN(name, reg, unreg, proto, args)
+#define DEFINE_TRACE(name, proto, args)
 #define EXPORT_TRACEPOINT_SYMBOL_GPL(name)
 #define EXPORT_TRACEPOINT_SYMBOL(name)
 
--- a/include/trace/define_trace.h
+++ b/include/trace/define_trace.h
@@ -25,7 +25,7 @@
 
 #undef TRACE_EVENT
 #define TRACE_EVENT(name, proto, args, tstruct, assign, print)	\
-	DEFINE_TRACE(name)
+	DEFINE_TRACE(name, PARAMS(proto), PARAMS(args))
 
 #undef TRACE_EVENT_CONDITION
 #define TRACE_EVENT_CONDITION(name, proto, args, cond, tstruct, assign, print) \
@@ -39,12 +39,12 @@
 #undef TRACE_EVENT_FN
 #define TRACE_EVENT_FN(name, proto, args, tstruct,		\
 		assign, print, reg, unreg)			\
-	DEFINE_TRACE_FN(name, reg, unreg)
+	DEFINE_TRACE_FN(name, reg, unreg, PARAMS(proto), PARAMS(args))
 
 #undef TRACE_EVENT_FN_COND
 #define TRACE_EVENT_FN_COND(name, proto, args, cond, tstruct,		\
 		assign, print, reg, unreg)			\
-	DEFINE_TRACE_FN(name, reg, unreg)
+	DEFINE_TRACE_FN(name, reg, unreg, PARAMS(proto), PARAMS(args))
 
 #undef TRACE_EVENT_NOP
 #define TRACE_EVENT_NOP(name, proto, args, struct, assign, print)
@@ -54,15 +54,15 @@
 
 #undef DEFINE_EVENT
 #define DEFINE_EVENT(template, name, proto, args) \
-	DEFINE_TRACE(name)
+	DEFINE_TRACE(name, PARAMS(proto), PARAMS(args))
 
 #undef DEFINE_EVENT_FN
 #define DEFINE_EVENT_FN(template, name, proto, args, reg, unreg) \
-	DEFINE_TRACE_FN(name, reg, unreg)
+	DEFINE_TRACE_FN(name, reg, unreg, PARAMS(proto), PARAMS(args))
 
 #undef DEFINE_EVENT_PRINT
 #define DEFINE_EVENT_PRINT(template, name, proto, args, print)	\
-	DEFINE_TRACE(name)
+	DEFINE_TRACE(name, PARAMS(proto), PARAMS(args))
 
 #undef DEFINE_EVENT_CONDITION
 #define DEFINE_EVENT_CONDITION(template, name, proto, args, cond) \
@@ -70,7 +70,7 @@
 
 #undef DECLARE_TRACE
 #define DECLARE_TRACE(name, proto, args)	\
-	DEFINE_TRACE(name)
+	DEFINE_TRACE(name, PARAMS(proto), PARAMS(args))
 
 #undef TRACE_INCLUDE
 #undef __TRACE_INCLUDE
--- a/kernel/tracepoint.c
+++ b/kernel/tracepoint.c
@@ -221,6 +221,16 @@ static void *func_remove(struct tracepoi
 	return old;
 }
 
+static void tracepoint_update_call(struct tracepoint *tp, struct tracepoint_func *tp_funcs)
+{
+	void *func = tp->iterator;
+
+	if (!tp_funcs[1].func)
+		func = tp_funcs[0].func;
+
+	__static_call_update(tp->static_call_key, tp->static_call_tramp, func);
+}
+
 /*
  * Add the probe function to a tracepoint.
  */
@@ -251,8 +261,9 @@ static int tracepoint_add_func(struct tr
 	 * include/linux/tracepoint.h using rcu_dereference_sched().
 	 */
 	rcu_assign_pointer(tp->funcs, tp_funcs);
-	if (!static_key_enabled(&tp->key))
-		static_key_slow_inc(&tp->key);
+	tracepoint_update_call(tp, tp_funcs);
+	static_key_enable(&tp->key);
+
 	release_probes(old);
 	return 0;
 }
@@ -281,9 +292,11 @@ static int tracepoint_remove_func(struct
 		if (tp->unregfunc && static_key_enabled(&tp->key))
 			tp->unregfunc();
 
-		if (static_key_enabled(&tp->key))
-			static_key_slow_dec(&tp->key);
+		static_key_disable(&tp->key);
+	} else {
+		tracepoint_update_call(tp, tp_funcs);
 	}
+
 	rcu_assign_pointer(tp->funcs, tp_funcs);
 	release_probes(old);
 	return 0;

[tracepoint] 01edfaf177: WARNING:at_kernel/static_call.c:#__static_call_update

[kernel test robot]

[-- Attachment #1: Type: text/plain, Size: 3593 bytes --]

Greeting,

FYI, we noticed the following commit (built with gcc-7):

commit: 01edfaf177311fba9941254793431d2044b00fd7 ("[PATCH v4 12/18] tracepoint: Optimize using static_call()")
url: https://github.com/0day-ci/linux/commits/Peter-Zijlstra/Add-static_call/20200502-045208


in testcase: boot

on test machine: qemu-system-x86_64 -enable-kvm -cpu SandyBridge -smp 2 -m 8G

caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace):




If you fix the issue, kindly add following tag
Reported-by: kernel test robot <rong.a.chen@intel.com>


[    1.990628] WARNING: CPU: 0 PID: 0 at kernel/static_call.c:113 __static_call_update+0x83/0x29c
[    1.990660] Modules linked in:
[    1.990703] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.7.0-rc3-next-20200501-00012-g01edfaf177311f #1
[    1.990742] RIP: 0010:__static_call_update+0x83/0x29c
[    1.990781] Code: 4c 89 f2 48 ff 05 d1 9d 83 06 e8 8e 09 d2 ff 48 ff 05 d5 9d 83 06 80 3d 8e a2 83 06 00 0f 85 f3 01 00 00 48 ff 05 c9 9d 83 06 <0f> 0b 48 ff 05 c8 9d 83 06 48 ff 05 c9 9d 83 06 e9 b0 01 00 00 48
[    1.990814] RSP: 0000:ffffffff83c07cf8 EFLAGS: 00010002
[    1.990850] RAX: 0000000000000000 RBX: ffffffff86682620 RCX: 0000000000000000
[    1.990884] RDX: fffffbfff0780f87 RSI: ffffffff83c918c0 RDI: fffffbfff0780f93
[    1.990916] RBP: ffffffff812943ec R08: fffffbfff07e3551 R09: fffffbfff07e3551
[    1.990950] R10: ffffffff83f1aa87 R11: 0000000000000001 R12: ffffffff83f6f0c0
[    1.990982] R13: 00000000ffffffff R14: ffffffff812943ec R15: ffffffff812943ec
[    1.991017] FS:  0000000000000000(0000) GS:ffff8881e8000000(0000) knlGS:0000000000000000
[    1.991049] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    1.991081] CR2: ffff88823ffff000 CR3: 0000000003c78000 CR4: 00000000000006b0
[    1.991119] Call Trace:
[    1.991164]  ? __SCT__tp_func_sched_waking+0x8/0x8
[    1.991202]  ? allocate_probes+0x2d/0x4d
[    1.991250]  ? probe_sched_switch+0x4f/0x4f
[    1.991286]  ? __SCT__tp_func_sched_waking+0x8/0x8
[    1.991331]  ? probe_sched_switch+0x4f/0x4f
[    1.991366]  tracepoint_update_call+0x6d/0x79
[    1.991416]  tracepoint_probe_register_prio+0x337/0x47f
[    1.991499]  tracepoint_probe_register+0x16/0x1e
[    1.991538]  tracing_start_sched_switch+0xc3/0x1ba
[    1.991627]  tracing_start_cmdline_record+0x11/0x19
[    1.991664]  trace_printk_start_comm+0x1c/0x24
[    1.991725]  trace_event_init+0x1b8/0x20a
[    1.991775]  trace_init+0xc/0x14
[    1.991809]  start_kernel+0x8ed/0xe78
[    1.991862]  ? thread_stack_cache_init+0xd/0xd
[    1.991905]  ? __early_make_pgtable+0x1b9/0x204
[    1.991963]  ? early_make_pgtable+0x27/0x2f
[    1.992000]  ? early_idt_handler_common+0x35/0x4c
[    1.992131]  x86_64_start_reservations+0x42/0x4a
[    1.992170]  x86_64_start_kernel+0xe1/0xea
[    1.992216]  secondary_startup_64+0xa4/0xb0
[    1.992336] irq event stamp: 0
[    1.992371] hardirqs last  enabled at (0): [<0000000000000000>] 0x0
[    1.992403] hardirqs last disabled at (0): [<0000000000000000>] 0x0
[    1.992437] softirqs last  enabled at (0): [<0000000000000000>] 0x0
[    1.992469] softirqs last disabled at (0): [<0000000000000000>] 0x0
[    1.992562] ---[ end trace 15ea566c311b9aea ]---


To reproduce:

        # build kernel
	cd linux
	cp config-5.7.0-rc3-next-20200501-00012-g01edfaf177311f .config
	make HOSTCC=gcc-7 CC=gcc-7 ARCH=x86_64 olddefconfig prepare modules_prepare bzImage

        git clone https://github.com/intel/lkp-tests.git
        cd lkp-tests
        bin/lkp qemu -k <bzImage> job-script # job-script is attached in this email



Thanks,
Rong Chen


[-- Attachment #2: config-5.7.0-rc3-next-20200501-00012-g01edfaf177311f --]
[-- Type: text/plain, Size: 142104 bytes --]

#
# Automatically generated file; DO NOT EDIT.
# Linux/x86_64 5.7.0-rc3 Kernel Configuration
#

#
# Compiler: gcc-7 (Ubuntu 7.5.0-6ubuntu2) 7.5.0
#
CONFIG_CC_IS_GCC=y
CONFIG_GCC_VERSION=70500
CONFIG_LD_VERSION=234000000
CONFIG_CLANG_VERSION=0
CONFIG_CC_CAN_LINK=y
CONFIG_CC_HAS_ASM_GOTO=y
CONFIG_CC_HAS_ASM_INLINE=y
CONFIG_CC_HAS_WARN_MAYBE_UNINITIALIZED=y
CONFIG_CC_DISABLE_WARN_MAYBE_UNINITIALIZED=y
CONFIG_CONSTRUCTORS=y
CONFIG_IRQ_WORK=y
CONFIG_BUILDTIME_TABLE_SORT=y
CONFIG_THREAD_INFO_IN_TASK=y

#
# General setup
#
CONFIG_INIT_ENV_ARG_LIMIT=32
# CONFIG_COMPILE_TEST is not set
CONFIG_LOCALVERSION=""
CONFIG_LOCALVERSION_AUTO=y
CONFIG_BUILD_SALT=""
CONFIG_HAVE_KERNEL_GZIP=y
CONFIG_HAVE_KERNEL_BZIP2=y
CONFIG_HAVE_KERNEL_LZMA=y
CONFIG_HAVE_KERNEL_XZ=y
CONFIG_HAVE_KERNEL_LZO=y
CONFIG_HAVE_KERNEL_LZ4=y
# CONFIG_KERNEL_GZIP is not set
CONFIG_KERNEL_BZIP2=y
# CONFIG_KERNEL_LZMA is not set
# CONFIG_KERNEL_XZ is not set
# CONFIG_KERNEL_LZO is not set
# CONFIG_KERNEL_LZ4 is not set
CONFIG_DEFAULT_HOSTNAME="(none)"
# CONFIG_SWAP is not set
# CONFIG_SYSVIPC is not set
CONFIG_POSIX_MQUEUE=y
CONFIG_POSIX_MQUEUE_SYSCTL=y
# CONFIG_WATCH_QUEUE is not set
CONFIG_CROSS_MEMORY_ATTACH=y
CONFIG_USELIB=y
CONFIG_AUDIT=y
CONFIG_HAVE_ARCH_AUDITSYSCALL=y
CONFIG_AUDITSYSCALL=y

#
# IRQ subsystem
#
CONFIG_GENERIC_IRQ_PROBE=y
CONFIG_GENERIC_IRQ_SHOW=y
CONFIG_GENERIC_IRQ_EFFECTIVE_AFF_MASK=y
CONFIG_GENERIC_PENDING_IRQ=y
CONFIG_GENERIC_IRQ_MIGRATION=y
CONFIG_HARDIRQS_SW_RESEND=y
CONFIG_GENERIC_IRQ_CHIP=y
CONFIG_IRQ_DOMAIN=y
CONFIG_IRQ_SIM=y
CONFIG_IRQ_DOMAIN_HIERARCHY=y
CONFIG_GENERIC_IRQ_MATRIX_ALLOCATOR=y
CONFIG_GENERIC_IRQ_RESERVATION_MODE=y
CONFIG_IRQ_FORCED_THREADING=y
CONFIG_SPARSE_IRQ=y
# CONFIG_GENERIC_IRQ_DEBUGFS is not set
# end of IRQ subsystem

CONFIG_CLOCKSOURCE_WATCHDOG=y
CONFIG_ARCH_CLOCKSOURCE_INIT=y
CONFIG_CLOCKSOURCE_VALIDATE_LAST_CYCLE=y
CONFIG_GENERIC_TIME_VSYSCALL=y
CONFIG_GENERIC_CLOCKEVENTS=y
CONFIG_GENERIC_CLOCKEVENTS_BROADCAST=y
CONFIG_GENERIC_CLOCKEVENTS_MIN_ADJUST=y
CONFIG_GENERIC_CMOS_UPDATE=y

#
# Timers subsystem
#
CONFIG_HZ_PERIODIC=y
# CONFIG_NO_HZ_IDLE is not set
# CONFIG_NO_HZ_FULL is not set
CONFIG_NO_HZ=y
# CONFIG_HIGH_RES_TIMERS is not set
# end of Timers subsystem

# CONFIG_PREEMPT_NONE is not set
# CONFIG_PREEMPT_VOLUNTARY is not set
CONFIG_PREEMPT=y
CONFIG_PREEMPT_COUNT=y
CONFIG_PREEMPTION=y

#
# CPU/Task time and stats accounting
#
CONFIG_TICK_CPU_ACCOUNTING=y
# CONFIG_VIRT_CPU_ACCOUNTING_GEN is not set
# CONFIG_IRQ_TIME_ACCOUNTING is not set
# CONFIG_SCHED_THERMAL_PRESSURE is not set
# CONFIG_BSD_PROCESS_ACCT is not set
# CONFIG_TASKSTATS is not set
CONFIG_PSI=y
# CONFIG_PSI_DEFAULT_DISABLED is not set
# end of CPU/Task time and stats accounting

# CONFIG_CPU_ISOLATION is not set

#
# RCU Subsystem
#
CONFIG_TREE_RCU=y
CONFIG_PREEMPT_RCU=y
CONFIG_RCU_EXPERT=y
CONFIG_SRCU=y
CONFIG_TREE_SRCU=y
CONFIG_TASKS_RCU_GENERIC=y
CONFIG_TASKS_RCU=y
CONFIG_TASKS_RUDE_RCU=y
CONFIG_TASKS_TRACE_RCU=y
CONFIG_RCU_STALL_COMMON=y
CONFIG_RCU_NEED_SEGCBLIST=y
CONFIG_RCU_FANOUT=64
CONFIG_RCU_FANOUT_LEAF=16
# CONFIG_RCU_BOOST is not set
CONFIG_RCU_NOCB_CPU=y
# CONFIG_TASKS_TRACE_RCU_READ_MB is not set
# end of RCU Subsystem

CONFIG_IKCONFIG=y
CONFIG_IKCONFIG_PROC=y
CONFIG_IKHEADERS=m
CONFIG_LOG_BUF_SHIFT=20
CONFIG_LOG_CPU_MAX_BUF_SHIFT=12
CONFIG_PRINTK_SAFE_LOG_BUF_SHIFT=13
CONFIG_HAVE_UNSTABLE_SCHED_CLOCK=y

#
# Scheduler features
#
CONFIG_UCLAMP_TASK=y
CONFIG_UCLAMP_BUCKETS_COUNT=5
# end of Scheduler features

CONFIG_ARCH_SUPPORTS_NUMA_BALANCING=y
CONFIG_ARCH_WANT_BATCHED_UNMAP_TLB_FLUSH=y
CONFIG_CC_HAS_INT128=y
CONFIG_ARCH_SUPPORTS_INT128=y
CONFIG_CGROUPS=y
CONFIG_PAGE_COUNTER=y
CONFIG_MEMCG=y
CONFIG_MEMCG_KMEM=y
# CONFIG_BLK_CGROUP is not set
CONFIG_CGROUP_SCHED=y
CONFIG_FAIR_GROUP_SCHED=y
# CONFIG_CFS_BANDWIDTH is not set
# CONFIG_RT_GROUP_SCHED is not set
CONFIG_UCLAMP_TASK_GROUP=y
# CONFIG_CGROUP_PIDS is not set
# CONFIG_CGROUP_RDMA is not set
# CONFIG_CGROUP_FREEZER is not set
# CONFIG_CGROUP_HUGETLB is not set
CONFIG_CPUSETS=y
CONFIG_PROC_PID_CPUSET=y
# CONFIG_CGROUP_DEVICE is not set
CONFIG_CGROUP_CPUACCT=y
# CONFIG_CGROUP_PERF is not set
CONFIG_CGROUP_BPF=y
# CONFIG_CGROUP_DEBUG is not set
CONFIG_SOCK_CGROUP_DATA=y
# CONFIG_NAMESPACES is not set
CONFIG_CHECKPOINT_RESTORE=y
CONFIG_SCHED_AUTOGROUP=y
# CONFIG_SYSFS_DEPRECATED is not set
CONFIG_RELAY=y
CONFIG_BLK_DEV_INITRD=y
CONFIG_INITRAMFS_SOURCE=""
CONFIG_RD_GZIP=y
# CONFIG_RD_BZIP2 is not set
# CONFIG_RD_LZMA is not set
# CONFIG_RD_XZ is not set
# CONFIG_RD_LZO is not set
CONFIG_RD_LZ4=y
CONFIG_BOOT_CONFIG=y
# CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE is not set
CONFIG_CC_OPTIMIZE_FOR_SIZE=y
CONFIG_SYSCTL=y
CONFIG_HAVE_UID16=y
CONFIG_SYSCTL_EXCEPTION_TRACE=y
CONFIG_HAVE_PCSPKR_PLATFORM=y
CONFIG_BPF=y
CONFIG_EXPERT=y
CONFIG_UID16=y
CONFIG_MULTIUSER=y
# CONFIG_SGETMASK_SYSCALL is not set
# CONFIG_SYSFS_SYSCALL is not set
CONFIG_FHANDLE=y
CONFIG_POSIX_TIMERS=y
CONFIG_PRINTK=y
CONFIG_PRINTK_NMI=y
CONFIG_BUG=y
# CONFIG_PCSPKR_PLATFORM is not set
CONFIG_BASE_FULL=y
CONFIG_FUTEX=y
CONFIG_FUTEX_PI=y
CONFIG_EPOLL=y
CONFIG_SIGNALFD=y
CONFIG_TIMERFD=y
CONFIG_EVENTFD=y
CONFIG_SHMEM=y
# CONFIG_AIO is not set
CONFIG_IO_URING=y
# CONFIG_ADVISE_SYSCALLS is not set
CONFIG_HAVE_ARCH_USERFAULTFD_WP=y
CONFIG_MEMBARRIER=y
CONFIG_KALLSYMS=y
CONFIG_KALLSYMS_ALL=y
CONFIG_KALLSYMS_ABSOLUTE_PERCPU=y
CONFIG_KALLSYMS_BASE_RELATIVE=y
CONFIG_BPF_SYSCALL=y
CONFIG_ARCH_WANT_DEFAULT_BPF_JIT=y
CONFIG_USERFAULTFD=y
CONFIG_ARCH_HAS_MEMBARRIER_SYNC_CORE=y
CONFIG_RSEQ=y
# CONFIG_DEBUG_RSEQ is not set
CONFIG_EMBEDDED=y
CONFIG_HAVE_PERF_EVENTS=y
CONFIG_PERF_USE_VMALLOC=y
CONFIG_PC104=y

#
# Kernel Performance Events And Counters
#
CONFIG_PERF_EVENTS=y
CONFIG_DEBUG_PERF_USE_VMALLOC=y
# end of Kernel Performance Events And Counters

CONFIG_VM_EVENT_COUNTERS=y
CONFIG_SLUB_DEBUG=y
CONFIG_SLUB_MEMCG_SYSFS_ON=y
# CONFIG_COMPAT_BRK is not set
# CONFIG_SLAB is not set
CONFIG_SLUB=y
# CONFIG_SLOB is not set
CONFIG_SLAB_MERGE_DEFAULT=y
CONFIG_SLAB_FREELIST_RANDOM=y
# CONFIG_SLAB_FREELIST_HARDENED is not set
CONFIG_SHUFFLE_PAGE_ALLOCATOR=y
CONFIG_SLUB_CPU_PARTIAL=y
CONFIG_SYSTEM_DATA_VERIFICATION=y
CONFIG_PROFILING=y
CONFIG_TRACEPOINTS=y
# end of General setup

CONFIG_64BIT=y
CONFIG_X86_64=y
CONFIG_X86=y
CONFIG_INSTRUCTION_DECODER=y
CONFIG_OUTPUT_FORMAT="elf64-x86-64"
CONFIG_LOCKDEP_SUPPORT=y
CONFIG_STACKTRACE_SUPPORT=y
CONFIG_MMU=y
CONFIG_ARCH_MMAP_RND_BITS_MIN=28
CONFIG_ARCH_MMAP_RND_BITS_MAX=32
CONFIG_ARCH_MMAP_RND_COMPAT_BITS_MIN=8
CONFIG_ARCH_MMAP_RND_COMPAT_BITS_MAX=16
CONFIG_GENERIC_ISA_DMA=y
CONFIG_GENERIC_BUG=y
CONFIG_GENERIC_BUG_RELATIVE_POINTERS=y
CONFIG_ARCH_MAY_HAVE_PC_FDC=y
CONFIG_GENERIC_CALIBRATE_DELAY=y
CONFIG_ARCH_HAS_CPU_RELAX=y
CONFIG_ARCH_HAS_CACHE_LINE_SIZE=y
CONFIG_ARCH_HAS_FILTER_PGPROT=y
CONFIG_HAVE_SETUP_PER_CPU_AREA=y
CONFIG_NEED_PER_CPU_EMBED_FIRST_CHUNK=y
CONFIG_NEED_PER_CPU_PAGE_FIRST_CHUNK=y
CONFIG_ARCH_HIBERNATION_POSSIBLE=y
CONFIG_ARCH_SUSPEND_POSSIBLE=y
CONFIG_ARCH_WANT_GENERAL_HUGETLB=y
CONFIG_ZONE_DMA32=y
CONFIG_AUDIT_ARCH=y
CONFIG_ARCH_SUPPORTS_DEBUG_PAGEALLOC=y
CONFIG_KASAN_SHADOW_OFFSET=0xdffffc0000000000
CONFIG_X86_64_SMP=y
CONFIG_ARCH_SUPPORTS_UPROBES=y
CONFIG_FIX_EARLYCON_MEM=y
CONFIG_DYNAMIC_PHYSICAL_MASK=y
CONFIG_PGTABLE_LEVELS=4
CONFIG_CC_HAS_SANE_STACKPROTECTOR=y

#
# Processor type and features
#
CONFIG_ZONE_DMA=y
CONFIG_SMP=y
CONFIG_X86_FEATURE_NAMES=y
# CONFIG_X86_X2APIC is not set
CONFIG_X86_MPPARSE=y
CONFIG_GOLDFISH=y
CONFIG_RETPOLINE=y
CONFIG_X86_CPU_RESCTRL=y
CONFIG_X86_EXTENDED_PLATFORM=y
CONFIG_X86_VSMP=y
# CONFIG_X86_GOLDFISH is not set
# CONFIG_X86_INTEL_MID is not set
# CONFIG_X86_INTEL_LPSS is not set
# CONFIG_X86_AMD_PLATFORM_DEVICE is not set
CONFIG_IOSF_MBI=y
# CONFIG_IOSF_MBI_DEBUG is not set
# CONFIG_SCHED_OMIT_FRAME_POINTER is not set
CONFIG_HYPERVISOR_GUEST=y
CONFIG_PARAVIRT=y
CONFIG_PARAVIRT_DEBUG=y
CONFIG_PARAVIRT_SPINLOCKS=y
CONFIG_X86_HV_CALLBACK_VECTOR=y
CONFIG_XEN=y
# CONFIG_XEN_PV is not set
# CONFIG_XEN_PVHVM is not set
CONFIG_XEN_SAVE_RESTORE=y
CONFIG_XEN_DEBUG_FS=y
CONFIG_KVM_GUEST=y
CONFIG_ARCH_CPUIDLE_HALTPOLL=y
# CONFIG_PVH is not set
# CONFIG_KVM_DEBUG_FS is not set
# CONFIG_PARAVIRT_TIME_ACCOUNTING is not set
CONFIG_PARAVIRT_CLOCK=y
# CONFIG_JAILHOUSE_GUEST is not set
# CONFIG_ACRN_GUEST is not set
# CONFIG_MK8 is not set
# CONFIG_MPSC is not set
# CONFIG_MCORE2 is not set
# CONFIG_MATOM is not set
CONFIG_GENERIC_CPU=y
CONFIG_X86_INTERNODE_CACHE_SHIFT=12
CONFIG_X86_L1_CACHE_SHIFT=6
CONFIG_X86_TSC=y
CONFIG_X86_CMPXCHG64=y
CONFIG_X86_CMOV=y
CONFIG_X86_MINIMUM_CPU_FAMILY=64
CONFIG_X86_DEBUGCTLMSR=y
CONFIG_IA32_FEAT_CTL=y
CONFIG_X86_VMX_FEATURE_NAMES=y
# CONFIG_PROCESSOR_SELECT is not set
CONFIG_CPU_SUP_INTEL=y
CONFIG_CPU_SUP_AMD=y
CONFIG_CPU_SUP_HYGON=y
CONFIG_CPU_SUP_CENTAUR=y
CONFIG_CPU_SUP_ZHAOXIN=y
CONFIG_HPET_TIMER=y
# CONFIG_DMI is not set
# CONFIG_GART_IOMMU is not set
CONFIG_MAXSMP=y
CONFIG_NR_CPUS_RANGE_BEGIN=8192
CONFIG_NR_CPUS_RANGE_END=8192
CONFIG_NR_CPUS_DEFAULT=8192
CONFIG_NR_CPUS=8192
CONFIG_SCHED_SMT=y
CONFIG_SCHED_MC=y
# CONFIG_SCHED_MC_PRIO is not set
CONFIG_X86_LOCAL_APIC=y
CONFIG_X86_IO_APIC=y
CONFIG_X86_REROUTE_FOR_BROKEN_BOOT_IRQS=y
# CONFIG_X86_MCE is not set

#
# Performance monitoring
#
# CONFIG_PERF_EVENTS_INTEL_UNCORE is not set
# CONFIG_PERF_EVENTS_INTEL_RAPL is not set
# CONFIG_PERF_EVENTS_INTEL_CSTATE is not set
CONFIG_PERF_EVENTS_AMD_POWER=m
# end of Performance monitoring

CONFIG_X86_16BIT=y
CONFIG_X86_ESPFIX64=y
CONFIG_X86_VSYSCALL_EMULATION=y
CONFIG_X86_IOPL_IOPERM=y
# CONFIG_I8K is not set
CONFIG_MICROCODE=y
# CONFIG_MICROCODE_INTEL is not set
CONFIG_MICROCODE_AMD=y
CONFIG_MICROCODE_OLD_INTERFACE=y
CONFIG_X86_MSR=y
CONFIG_X86_CPUID=y
# CONFIG_X86_5LEVEL is not set
CONFIG_X86_DIRECT_GBPAGES=y
CONFIG_X86_CPA_STATISTICS=y
CONFIG_AMD_MEM_ENCRYPT=y
CONFIG_AMD_MEM_ENCRYPT_ACTIVE_BY_DEFAULT=y
# CONFIG_NUMA is not set
CONFIG_ARCH_SPARSEMEM_ENABLE=y
CONFIG_ARCH_SPARSEMEM_DEFAULT=y
CONFIG_ARCH_SELECT_MEMORY_MODEL=y
# CONFIG_ARCH_MEMORY_PROBE is not set
CONFIG_ILLEGAL_POINTER_VALUE=0xdead000000000000
# CONFIG_X86_PMEM_LEGACY is not set
CONFIG_X86_CHECK_BIOS_CORRUPTION=y
# CONFIG_X86_BOOTPARAM_MEMORY_CORRUPTION_CHECK is not set
CONFIG_X86_RESERVE_LOW=64
CONFIG_MTRR=y
CONFIG_MTRR_SANITIZER=y
CONFIG_MTRR_SANITIZER_ENABLE_DEFAULT=0
CONFIG_MTRR_SANITIZER_SPARE_REG_NR_DEFAULT=1
# CONFIG_X86_PAT is not set
CONFIG_ARCH_RANDOM=y
# CONFIG_X86_SMAP is not set
CONFIG_X86_UMIP=y
CONFIG_X86_INTEL_MEMORY_PROTECTION_KEYS=y
CONFIG_X86_INTEL_TSX_MODE_OFF=y
# CONFIG_X86_INTEL_TSX_MODE_ON is not set
# CONFIG_X86_INTEL_TSX_MODE_AUTO is not set
CONFIG_EFI=y
# CONFIG_EFI_STUB is not set
CONFIG_SECCOMP=y
CONFIG_HZ_100=y
# CONFIG_HZ_250 is not set
# CONFIG_HZ_300 is not set
# CONFIG_HZ_1000 is not set
CONFIG_HZ=100
# CONFIG_KEXEC is not set
# CONFIG_KEXEC_FILE is not set
CONFIG_CRASH_DUMP=y
CONFIG_PHYSICAL_START=0x1000000
# CONFIG_RELOCATABLE is not set
CONFIG_PHYSICAL_ALIGN=0x200000
CONFIG_HOTPLUG_CPU=y
# CONFIG_BOOTPARAM_HOTPLUG_CPU0 is not set
CONFIG_DEBUG_HOTPLUG_CPU0=y
# CONFIG_COMPAT_VDSO is not set
CONFIG_LEGACY_VSYSCALL_EMULATE=y
# CONFIG_LEGACY_VSYSCALL_XONLY is not set
# CONFIG_LEGACY_VSYSCALL_NONE is not set
# CONFIG_CMDLINE_BOOL is not set
CONFIG_MODIFY_LDT_SYSCALL=y
CONFIG_HAVE_LIVEPATCH=y
# end of Processor type and features

CONFIG_ARCH_HAS_ADD_PAGES=y
CONFIG_ARCH_ENABLE_MEMORY_HOTPLUG=y
CONFIG_ARCH_ENABLE_MEMORY_HOTREMOVE=y
CONFIG_ARCH_ENABLE_SPLIT_PMD_PTLOCK=y
CONFIG_ARCH_ENABLE_HUGEPAGE_MIGRATION=y

#
# Power management and ACPI options
#
CONFIG_SUSPEND=y
CONFIG_SUSPEND_FREEZER=y
# CONFIG_SUSPEND_SKIP_SYNC is not set
CONFIG_HIBERNATE_CALLBACKS=y
CONFIG_PM_SLEEP=y
CONFIG_PM_SLEEP_SMP=y
CONFIG_PM_AUTOSLEEP=y
CONFIG_PM_WAKELOCKS=y
CONFIG_PM_WAKELOCKS_LIMIT=100
# CONFIG_PM_WAKELOCKS_GC is not set
CONFIG_PM=y
CONFIG_PM_DEBUG=y
# CONFIG_PM_ADVANCED_DEBUG is not set
CONFIG_PM_SLEEP_DEBUG=y
CONFIG_DPM_WATCHDOG=y
CONFIG_DPM_WATCHDOG_TIMEOUT=120
CONFIG_PM_TRACE=y
CONFIG_PM_TRACE_RTC=y
CONFIG_PM_CLK=y
# CONFIG_WQ_POWER_EFFICIENT_DEFAULT is not set
CONFIG_ENERGY_MODEL=y
CONFIG_ARCH_SUPPORTS_ACPI=y
CONFIG_ACPI=y
CONFIG_ACPI_LEGACY_TABLES_LOOKUP=y
CONFIG_ARCH_MIGHT_HAVE_ACPI_PDC=y
CONFIG_ACPI_SYSTEM_POWER_STATES_SUPPORT=y
# CONFIG_ACPI_DEBUGGER is not set
CONFIG_ACPI_SPCR_TABLE=y
CONFIG_ACPI_LPIT=y
CONFIG_ACPI_SLEEP=y
# CONFIG_ACPI_PROCFS_POWER is not set
CONFIG_ACPI_REV_OVERRIDE_POSSIBLE=y
# CONFIG_ACPI_EC_DEBUGFS is not set
CONFIG_ACPI_AC=y
CONFIG_ACPI_BATTERY=y
CONFIG_ACPI_BUTTON=y
CONFIG_ACPI_VIDEO=y
CONFIG_ACPI_FAN=y
# CONFIG_ACPI_TAD is not set
# CONFIG_ACPI_DOCK is not set
CONFIG_ACPI_CPU_FREQ_PSS=y
CONFIG_ACPI_PROCESSOR_CSTATE=y
CONFIG_ACPI_PROCESSOR_IDLE=y
CONFIG_ACPI_PROCESSOR=y
# CONFIG_ACPI_IPMI is not set
CONFIG_ACPI_HOTPLUG_CPU=y
# CONFIG_ACPI_PROCESSOR_AGGREGATOR is not set
CONFIG_ACPI_THERMAL=y
CONFIG_ACPI_CUSTOM_DSDT_FILE=""
CONFIG_ARCH_HAS_ACPI_TABLE_UPGRADE=y
CONFIG_ACPI_TABLE_UPGRADE=y
# CONFIG_ACPI_DEBUG is not set
# CONFIG_ACPI_PCI_SLOT is not set
CONFIG_ACPI_CONTAINER=y
# CONFIG_ACPI_HOTPLUG_MEMORY is not set
CONFIG_ACPI_HOTPLUG_IOAPIC=y
# CONFIG_ACPI_SBS is not set
# CONFIG_ACPI_HED is not set
# CONFIG_ACPI_CUSTOM_METHOD is not set
# CONFIG_ACPI_BGRT is not set
# CONFIG_ACPI_REDUCED_HARDWARE_ONLY is not set
# CONFIG_ACPI_NFIT is not set
CONFIG_HAVE_ACPI_APEI=y
CONFIG_HAVE_ACPI_APEI_NMI=y
# CONFIG_ACPI_APEI is not set
# CONFIG_DPTF_POWER is not set
# CONFIG_PMIC_OPREGION is not set
# CONFIG_ACPI_CONFIGFS is not set
CONFIG_X86_PM_TIMER=y
# CONFIG_SFI is not set

#
# CPU Frequency scaling
#
CONFIG_CPU_FREQ=y
CONFIG_CPU_FREQ_GOV_ATTR_SET=y
CONFIG_CPU_FREQ_GOV_COMMON=y
# CONFIG_CPU_FREQ_STAT is not set
# CONFIG_CPU_FREQ_DEFAULT_GOV_PERFORMANCE is not set
# CONFIG_CPU_FREQ_DEFAULT_GOV_POWERSAVE is not set
# CONFIG_CPU_FREQ_DEFAULT_GOV_USERSPACE is not set
# CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND is not set
CONFIG_CPU_FREQ_DEFAULT_GOV_CONSERVATIVE=y
# CONFIG_CPU_FREQ_DEFAULT_GOV_SCHEDUTIL is not set
CONFIG_CPU_FREQ_GOV_PERFORMANCE=y
CONFIG_CPU_FREQ_GOV_POWERSAVE=m
CONFIG_CPU_FREQ_GOV_USERSPACE=m
CONFIG_CPU_FREQ_GOV_ONDEMAND=m
CONFIG_CPU_FREQ_GOV_CONSERVATIVE=y
CONFIG_CPU_FREQ_GOV_SCHEDUTIL=y

#
# CPU frequency scaling drivers
#
# CONFIG_X86_INTEL_PSTATE is not set
# CONFIG_X86_PCC_CPUFREQ is not set
# CONFIG_X86_ACPI_CPUFREQ is not set
# CONFIG_X86_SPEEDSTEP_CENTRINO is not set
# CONFIG_X86_P4_CLOCKMOD is not set

#
# shared options
#
# end of CPU Frequency scaling

#
# CPU Idle
#
CONFIG_CPU_IDLE=y
CONFIG_CPU_IDLE_GOV_LADDER=y
# CONFIG_CPU_IDLE_GOV_MENU is not set
CONFIG_CPU_IDLE_GOV_TEO=y
# CONFIG_CPU_IDLE_GOV_HALTPOLL is not set
CONFIG_HALTPOLL_CPUIDLE=y
# end of CPU Idle

CONFIG_INTEL_IDLE=y
# end of Power management and ACPI options

#
# Bus options (PCI etc.)
#
CONFIG_PCI_DIRECT=y
CONFIG_PCI_MMCONFIG=y
CONFIG_PCI_XEN=y
CONFIG_MMCONF_FAM10H=y
CONFIG_PCI_CNB20LE_QUIRK=y
# CONFIG_ISA_BUS is not set
CONFIG_ISA_DMA_API=y
CONFIG_AMD_NB=y
# CONFIG_X86_SYSFB is not set
# end of Bus options (PCI etc.)

#
# Binary Emulations
#
CONFIG_IA32_EMULATION=y
CONFIG_X86_X32=y
CONFIG_COMPAT_32=y
CONFIG_COMPAT=y
CONFIG_COMPAT_FOR_U64_ALIGNMENT=y
# end of Binary Emulations

#
# Firmware Drivers
#
CONFIG_EDD=y
# CONFIG_EDD_OFF is not set
CONFIG_FIRMWARE_MEMMAP=y
# CONFIG_ISCSI_IBFT is not set
CONFIG_FW_CFG_SYSFS=y
# CONFIG_FW_CFG_SYSFS_CMDLINE is not set
# CONFIG_GOOGLE_FIRMWARE is not set

#
# EFI (Extensible Firmware Interface) Support
#
# CONFIG_EFI_VARS is not set
CONFIG_EFI_ESRT=y
# CONFIG_EFI_FAKE_MEMMAP is not set
CONFIG_EFI_RUNTIME_WRAPPERS=y
# CONFIG_EFI_CAPSULE_LOADER is not set
# CONFIG_EFI_TEST is not set
# CONFIG_EFI_RCI2_TABLE is not set
# CONFIG_EFI_DISABLE_PCI_DMA is not set
# end of EFI (Extensible Firmware Interface) Support

CONFIG_EFI_EARLYCON=y

#
# Tegra firmware driver
#
# end of Tegra firmware driver
# end of Firmware Drivers

CONFIG_HAVE_KVM=y
CONFIG_VIRTUALIZATION=y
# CONFIG_KVM_WERROR is not set
CONFIG_AS_AVX512=y
CONFIG_AS_SHA1_NI=y
CONFIG_AS_SHA256_NI=y

#
# General architecture-dependent options
#
CONFIG_HOTPLUG_SMT=y
# CONFIG_OPROFILE is not set
CONFIG_HAVE_OPROFILE=y
CONFIG_OPROFILE_NMI_TIMER=y
CONFIG_KPROBES=y
# CONFIG_JUMP_LABEL is not set
# CONFIG_STATIC_CALL_SELFTEST is not set
CONFIG_OPTPROBES=y
CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS=y
CONFIG_ARCH_USE_BUILTIN_BSWAP=y
CONFIG_KRETPROBES=y
CONFIG_HAVE_IOREMAP_PROT=y
CONFIG_HAVE_KPROBES=y
CONFIG_HAVE_KRETPROBES=y
CONFIG_HAVE_OPTPROBES=y
CONFIG_HAVE_KPROBES_ON_FTRACE=y
CONFIG_HAVE_FUNCTION_ERROR_INJECTION=y
CONFIG_HAVE_NMI=y
CONFIG_HAVE_ARCH_TRACEHOOK=y
CONFIG_HAVE_DMA_CONTIGUOUS=y
CONFIG_GENERIC_SMP_IDLE_THREAD=y
CONFIG_ARCH_HAS_FORTIFY_SOURCE=y
CONFIG_ARCH_HAS_SET_MEMORY=y
CONFIG_ARCH_HAS_SET_DIRECT_MAP=y
CONFIG_HAVE_ARCH_THREAD_STRUCT_WHITELIST=y
CONFIG_ARCH_WANTS_DYNAMIC_TASK_STRUCT=y
CONFIG_HAVE_ASM_MODVERSIONS=y
CONFIG_HAVE_REGS_AND_STACK_ACCESS_API=y
CONFIG_HAVE_RSEQ=y
CONFIG_HAVE_FUNCTION_ARG_ACCESS_API=y
CONFIG_HAVE_CLK=y
CONFIG_HAVE_HW_BREAKPOINT=y
CONFIG_HAVE_MIXED_BREAKPOINTS_REGS=y
CONFIG_HAVE_USER_RETURN_NOTIFIER=y
CONFIG_HAVE_PERF_EVENTS_NMI=y
CONFIG_HAVE_HARDLOCKUP_DETECTOR_PERF=y
CONFIG_HAVE_PERF_REGS=y
CONFIG_HAVE_PERF_USER_STACK_DUMP=y
CONFIG_HAVE_ARCH_JUMP_LABEL=y
CONFIG_HAVE_ARCH_JUMP_LABEL_RELATIVE=y
CONFIG_MMU_GATHER_TABLE_FREE=y
CONFIG_MMU_GATHER_RCU_TABLE_FREE=y
CONFIG_ARCH_HAVE_NMI_SAFE_CMPXCHG=y
CONFIG_HAVE_ALIGNED_STRUCT_PAGE=y
CONFIG_HAVE_CMPXCHG_LOCAL=y
CONFIG_HAVE_CMPXCHG_DOUBLE=y
CONFIG_ARCH_WANT_COMPAT_IPC_PARSE_VERSION=y
CONFIG_ARCH_WANT_OLD_COMPAT_IPC=y
CONFIG_HAVE_ARCH_SECCOMP_FILTER=y
CONFIG_SECCOMP_FILTER=y
CONFIG_HAVE_ARCH_STACKLEAK=y
CONFIG_HAVE_STACKPROTECTOR=y
CONFIG_CC_HAS_STACKPROTECTOR_NONE=y
CONFIG_STACKPROTECTOR=y
# CONFIG_STACKPROTECTOR_STRONG is not set
CONFIG_HAVE_ARCH_WITHIN_STACK_FRAMES=y
CONFIG_HAVE_CONTEXT_TRACKING=y
CONFIG_HAVE_VIRT_CPU_ACCOUNTING_GEN=y
CONFIG_HAVE_IRQ_TIME_ACCOUNTING=y
CONFIG_HAVE_MOVE_PMD=y
CONFIG_HAVE_ARCH_TRANSPARENT_HUGEPAGE=y
CONFIG_HAVE_ARCH_TRANSPARENT_HUGEPAGE_PUD=y
CONFIG_HAVE_ARCH_HUGE_VMAP=y
CONFIG_ARCH_WANT_HUGE_PMD_SHARE=y
CONFIG_HAVE_ARCH_SOFT_DIRTY=y
CONFIG_HAVE_MOD_ARCH_SPECIFIC=y
CONFIG_MODULES_USE_ELF_RELA=y
CONFIG_HAVE_IRQ_EXIT_ON_IRQ_STACK=y
CONFIG_ARCH_HAS_ELF_RANDOMIZE=y
CONFIG_HAVE_ARCH_MMAP_RND_BITS=y
CONFIG_HAVE_EXIT_THREAD=y
CONFIG_ARCH_MMAP_RND_BITS=28
CONFIG_HAVE_ARCH_MMAP_RND_COMPAT_BITS=y
CONFIG_ARCH_MMAP_RND_COMPAT_BITS=8
CONFIG_HAVE_ARCH_COMPAT_MMAP_BASES=y
CONFIG_HAVE_COPY_THREAD_TLS=y
CONFIG_HAVE_STACK_VALIDATION=y
CONFIG_HAVE_RELIABLE_STACKTRACE=y
CONFIG_ISA_BUS_API=y
CONFIG_OLD_SIGSUSPEND3=y
CONFIG_COMPAT_OLD_SIGACTION=y
# CONFIG_COMPAT_32BIT_TIME is not set
CONFIG_HAVE_ARCH_VMAP_STACK=y
CONFIG_VMAP_STACK=y
CONFIG_ARCH_HAS_STRICT_KERNEL_RWX=y
CONFIG_STRICT_KERNEL_RWX=y
CONFIG_ARCH_HAS_STRICT_MODULE_RWX=y
CONFIG_STRICT_MODULE_RWX=y
CONFIG_HAVE_ARCH_PREL32_RELOCATIONS=y
CONFIG_ARCH_USE_MEMREMAP_PROT=y
CONFIG_LOCK_EVENT_COUNTS=y
CONFIG_ARCH_HAS_MEM_ENCRYPT=y
CONFIG_HAVE_STATIC_CALL=y
CONFIG_HAVE_STATIC_CALL_INLINE=y

#
# GCOV-based kernel profiling
#
CONFIG_GCOV_KERNEL=y
CONFIG_ARCH_HAS_GCOV_PROFILE_ALL=y
CONFIG_GCOV_PROFILE_ALL=y
CONFIG_GCOV_FORMAT_4_7=y
# end of GCOV-based kernel profiling

CONFIG_HAVE_GCC_PLUGINS=y
# end of General architecture-dependent options

CONFIG_RT_MUTEXES=y
CONFIG_BASE_SMALL=0
CONFIG_MODULE_SIG_FORMAT=y
CONFIG_MODULES=y
CONFIG_MODULE_FORCE_LOAD=y
# CONFIG_MODULE_UNLOAD is not set
# CONFIG_MODVERSIONS is not set
# CONFIG_MODULE_SRCVERSION_ALL is not set
CONFIG_MODULE_SIG=y
# CONFIG_MODULE_SIG_FORCE is not set
# CONFIG_MODULE_SIG_ALL is not set
# CONFIG_MODULE_SIG_SHA1 is not set
# CONFIG_MODULE_SIG_SHA224 is not set
# CONFIG_MODULE_SIG_SHA256 is not set
CONFIG_MODULE_SIG_SHA384=y
# CONFIG_MODULE_SIG_SHA512 is not set
CONFIG_MODULE_SIG_HASH="sha384"
# CONFIG_MODULE_COMPRESS is not set
CONFIG_MODULE_ALLOW_MISSING_NAMESPACE_IMPORTS=y
CONFIG_UNUSED_SYMBOLS=y
CONFIG_MODULES_TREE_LOOKUP=y
CONFIG_BLOCK=y
CONFIG_BLK_SCSI_REQUEST=y
CONFIG_BLK_DEV_BSG=y
CONFIG_BLK_DEV_BSGLIB=y
# CONFIG_BLK_DEV_INTEGRITY is not set
CONFIG_BLK_DEV_ZONED=y
# CONFIG_BLK_CMDLINE_PARSER is not set
CONFIG_BLK_WBT=y
CONFIG_BLK_WBT_MQ=y
# CONFIG_BLK_DEBUG_FS is not set
# CONFIG_BLK_SED_OPAL is not set

#
# Partition Types
#
# CONFIG_PARTITION_ADVANCED is not set
CONFIG_AMIGA_PARTITION=y
CONFIG_MSDOS_PARTITION=y
CONFIG_EFI_PARTITION=y
# end of Partition Types

CONFIG_BLOCK_COMPAT=y
CONFIG_BLK_MQ_PCI=y
CONFIG_BLK_MQ_VIRTIO=y
CONFIG_BLK_PM=y

#
# IO Schedulers
#
CONFIG_MQ_IOSCHED_DEADLINE=y
# CONFIG_MQ_IOSCHED_KYBER is not set
CONFIG_IOSCHED_BFQ=m
# end of IO Schedulers

CONFIG_PADATA=y
CONFIG_ASN1=y
CONFIG_UNINLINE_SPIN_UNLOCK=y
CONFIG_ARCH_SUPPORTS_ATOMIC_RMW=y
CONFIG_MUTEX_SPIN_ON_OWNER=y
CONFIG_RWSEM_SPIN_ON_OWNER=y
CONFIG_LOCK_SPIN_ON_OWNER=y
CONFIG_ARCH_USE_QUEUED_SPINLOCKS=y
CONFIG_QUEUED_SPINLOCKS=y
CONFIG_ARCH_USE_QUEUED_RWLOCKS=y
CONFIG_QUEUED_RWLOCKS=y
CONFIG_ARCH_HAS_SYNC_CORE_BEFORE_USERMODE=y
CONFIG_ARCH_HAS_SYSCALL_WRAPPER=y
CONFIG_FREEZER=y

#
# Executable file formats
#
CONFIG_BINFMT_ELF=y
CONFIG_COMPAT_BINFMT_ELF=y
CONFIG_ELFCORE=y
CONFIG_BINFMT_SCRIPT=y
# CONFIG_BINFMT_MISC is not set
# CONFIG_COREDUMP is not set
# end of Executable file formats

#
# Memory Management options
#
CONFIG_SELECT_MEMORY_MODEL=y
CONFIG_SPARSEMEM_MANUAL=y
CONFIG_SPARSEMEM=y
CONFIG_HAVE_MEMORY_PRESENT=y
CONFIG_SPARSEMEM_EXTREME=y
CONFIG_SPARSEMEM_VMEMMAP_ENABLE=y
# CONFIG_SPARSEMEM_VMEMMAP is not set
CONFIG_HAVE_FAST_GUP=y
CONFIG_MEMORY_ISOLATION=y
CONFIG_HAVE_BOOTMEM_INFO_NODE=y
CONFIG_MEMORY_HOTPLUG=y
CONFIG_MEMORY_HOTPLUG_SPARSE=y
# CONFIG_MEMORY_HOTPLUG_DEFAULT_ONLINE is not set
CONFIG_MEMORY_HOTREMOVE=y
CONFIG_SPLIT_PTLOCK_CPUS=4
# CONFIG_COMPACTION is not set
# CONFIG_PAGE_REPORTING is not set
CONFIG_MIGRATION=y
CONFIG_CONTIG_ALLOC=y
CONFIG_PHYS_ADDR_T_64BIT=y
CONFIG_BOUNCE=y
CONFIG_VIRT_TO_BUS=y
CONFIG_MMU_NOTIFIER=y
# CONFIG_KSM is not set
CONFIG_DEFAULT_MMAP_MIN_ADDR=4096
# CONFIG_TRANSPARENT_HUGEPAGE is not set
CONFIG_ARCH_WANTS_THP_SWAP=y
CONFIG_CLEANCACHE=y
CONFIG_CMA=y
CONFIG_CMA_DEBUG=y
# CONFIG_CMA_DEBUGFS is not set
CONFIG_CMA_AREAS=7
# CONFIG_MEM_SOFT_DIRTY is not set
CONFIG_ZPOOL=m
# CONFIG_ZBUD is not set
# CONFIG_Z3FOLD is not set
CONFIG_ZSMALLOC=y
# CONFIG_ZSMALLOC_PGTABLE_MAPPING is not set
CONFIG_ZSMALLOC_STAT=y
CONFIG_GENERIC_EARLY_IOREMAP=y
CONFIG_DEFERRED_STRUCT_PAGE_INIT=y
CONFIG_IDLE_PAGE_TRACKING=y
CONFIG_ARCH_HAS_PTE_DEVMAP=y
CONFIG_FRAME_VECTOR=y
CONFIG_ARCH_USES_HIGH_VMA_FLAGS=y
CONFIG_ARCH_HAS_PKEYS=y
CONFIG_PERCPU_STATS=y
CONFIG_GUP_BENCHMARK=y
CONFIG_ARCH_HAS_PTE_SPECIAL=y
# end of Memory Management options

CONFIG_NET=y
CONFIG_SKB_EXTENSIONS=y

#
# Networking options
#
CONFIG_PACKET=y
# CONFIG_PACKET_DIAG is not set
CONFIG_UNIX=y
CONFIG_UNIX_SCM=y
# CONFIG_UNIX_DIAG is not set
CONFIG_TLS=m
# CONFIG_TLS_DEVICE is not set
# CONFIG_TLS_TOE is not set
CONFIG_XFRM=y
# CONFIG_XFRM_USER is not set
# CONFIG_XFRM_INTERFACE is not set
# CONFIG_XFRM_SUB_POLICY is not set
# CONFIG_XFRM_MIGRATE is not set
# CONFIG_XFRM_STATISTICS is not set
# CONFIG_NET_KEY is not set
CONFIG_XDP_SOCKETS=y
# CONFIG_XDP_SOCKETS_DIAG is not set
CONFIG_INET=y
# CONFIG_IP_MULTICAST is not set
CONFIG_IP_ADVANCED_ROUTER=y
# CONFIG_IP_FIB_TRIE_STATS is not set
CONFIG_IP_MULTIPLE_TABLES=y
# CONFIG_IP_ROUTE_MULTIPATH is not set
# CONFIG_IP_ROUTE_VERBOSE is not set
CONFIG_IP_PNP=y
CONFIG_IP_PNP_DHCP=y
# CONFIG_IP_PNP_BOOTP is not set
# CONFIG_IP_PNP_RARP is not set
# CONFIG_NET_IPIP is not set
# CONFIG_NET_IPGRE_DEMUX is not set
CONFIG_NET_IP_TUNNEL=y
# CONFIG_SYN_COOKIES is not set
# CONFIG_NET_IPVTI is not set
CONFIG_NET_UDP_TUNNEL=y
CONFIG_NET_FOU=y
CONFIG_NET_FOU_IP_TUNNELS=y
# CONFIG_INET_AH is not set
# CONFIG_INET_ESP is not set
# CONFIG_INET_IPCOMP is not set
CONFIG_INET_TUNNEL=y
CONFIG_INET_DIAG=y
CONFIG_INET_TCP_DIAG=y
# CONFIG_INET_UDP_DIAG is not set
# CONFIG_INET_RAW_DIAG is not set
# CONFIG_INET_DIAG_DESTROY is not set
# CONFIG_TCP_CONG_ADVANCED is not set
CONFIG_TCP_CONG_CUBIC=y
CONFIG_DEFAULT_TCP_CONG="cubic"
# CONFIG_TCP_MD5SIG is not set
CONFIG_IPV6=y
# CONFIG_IPV6_ROUTER_PREF is not set
# CONFIG_IPV6_OPTIMISTIC_DAD is not set
# CONFIG_INET6_AH is not set
# CONFIG_INET6_ESP is not set
# CONFIG_INET6_IPCOMP is not set
# CONFIG_IPV6_MIP6 is not set
CONFIG_INET6_TUNNEL=y
# CONFIG_IPV6_VTI is not set
CONFIG_IPV6_SIT=y
# CONFIG_IPV6_SIT_6RD is not set
CONFIG_IPV6_NDISC_NODETYPE=y
CONFIG_IPV6_TUNNEL=y
CONFIG_IPV6_FOU=y
CONFIG_IPV6_FOU_TUNNEL=y
CONFIG_IPV6_MULTIPLE_TABLES=y
# CONFIG_IPV6_SUBTREES is not set
# CONFIG_IPV6_MROUTE is not set
CONFIG_IPV6_SEG6_LWTUNNEL=y
# CONFIG_IPV6_SEG6_HMAC is not set
CONFIG_IPV6_SEG6_BPF=y
# CONFIG_IPV6_RPL_LWTUNNEL is not set
CONFIG_MPTCP=y
CONFIG_MPTCP_IPV6=y
# CONFIG_MPTCP_HMAC_TEST is not set
CONFIG_NETWORK_SECMARK=y
# CONFIG_NETWORK_PHY_TIMESTAMPING is not set
# CONFIG_NETFILTER is not set
# CONFIG_BPFILTER is not set
# CONFIG_IP_DCCP is not set
# CONFIG_IP_SCTP is not set
# CONFIG_RDS is not set
# CONFIG_TIPC is not set
# CONFIG_ATM is not set
# CONFIG_L2TP is not set
CONFIG_STP=y
CONFIG_GARP=y
# CONFIG_BRIDGE is not set
CONFIG_HAVE_NET_DSA=y
# CONFIG_NET_DSA is not set
CONFIG_VLAN_8021Q=y
CONFIG_VLAN_8021Q_GVRP=y
# CONFIG_VLAN_8021Q_MVRP is not set
CONFIG_DECNET=m
CONFIG_DECNET_ROUTER=y
CONFIG_LLC=y
CONFIG_LLC2=m
CONFIG_ATALK=y
CONFIG_DEV_APPLETALK=m
CONFIG_IPDDP=m
CONFIG_IPDDP_ENCAP=y
CONFIG_X25=y
CONFIG_LAPB=y
# CONFIG_PHONET is not set
# CONFIG_6LOWPAN is not set
# CONFIG_IEEE802154 is not set
CONFIG_NET_SCHED=y

#
# Queueing/Scheduling
#
# CONFIG_NET_SCH_CBQ is not set
CONFIG_NET_SCH_HTB=m
CONFIG_NET_SCH_HFSC=y
CONFIG_NET_SCH_PRIO=y
CONFIG_NET_SCH_MULTIQ=m
CONFIG_NET_SCH_RED=y
CONFIG_NET_SCH_SFB=y
CONFIG_NET_SCH_SFQ=y
CONFIG_NET_SCH_TEQL=m
CONFIG_NET_SCH_TBF=y
CONFIG_NET_SCH_CBS=m
# CONFIG_NET_SCH_ETF is not set
# CONFIG_NET_SCH_TAPRIO is not set
CONFIG_NET_SCH_GRED=m
CONFIG_NET_SCH_DSMARK=m
CONFIG_NET_SCH_NETEM=m
# CONFIG_NET_SCH_DRR is not set
# CONFIG_NET_SCH_MQPRIO is not set
CONFIG_NET_SCH_SKBPRIO=m
# CONFIG_NET_SCH_CHOKE is not set
# CONFIG_NET_SCH_QFQ is not set
CONFIG_NET_SCH_CODEL=y
CONFIG_NET_SCH_FQ_CODEL=y
# CONFIG_NET_SCH_CAKE is not set
# CONFIG_NET_SCH_FQ is not set
CONFIG_NET_SCH_HHF=m
# CONFIG_NET_SCH_PIE is not set
# CONFIG_NET_SCH_PLUG is not set
CONFIG_NET_SCH_ETS=m
# CONFIG_NET_SCH_DEFAULT is not set

#
# Classification
#
CONFIG_NET_CLS=y
CONFIG_NET_CLS_BASIC=y
CONFIG_NET_CLS_TCINDEX=m
# CONFIG_NET_CLS_ROUTE4 is not set
CONFIG_NET_CLS_FW=y
CONFIG_NET_CLS_U32=m
# CONFIG_CLS_U32_PERF is not set
# CONFIG_CLS_U32_MARK is not set
CONFIG_NET_CLS_RSVP=y
# CONFIG_NET_CLS_RSVP6 is not set
CONFIG_NET_CLS_FLOW=y
# CONFIG_NET_CLS_CGROUP is not set
CONFIG_NET_CLS_BPF=m
CONFIG_NET_CLS_FLOWER=m
CONFIG_NET_CLS_MATCHALL=y
# CONFIG_NET_EMATCH is not set
# CONFIG_NET_CLS_ACT is not set
CONFIG_NET_SCH_FIFO=y
# CONFIG_DCB is not set
CONFIG_DNS_RESOLVER=y
# CONFIG_BATMAN_ADV is not set
# CONFIG_OPENVSWITCH is not set
# CONFIG_VSOCKETS is not set
CONFIG_NETLINK_DIAG=m
CONFIG_MPLS=y
CONFIG_NET_MPLS_GSO=m
CONFIG_MPLS_ROUTING=m
CONFIG_MPLS_IPTUNNEL=m
CONFIG_NET_NSH=m
# CONFIG_HSR is not set
# CONFIG_NET_SWITCHDEV is not set
CONFIG_NET_L3_MASTER_DEV=y
# CONFIG_NET_NCSI is not set
CONFIG_RPS=y
CONFIG_RFS_ACCEL=y
CONFIG_XPS=y
# CONFIG_CGROUP_NET_PRIO is not set
CONFIG_CGROUP_NET_CLASSID=y
CONFIG_NET_RX_BUSY_POLL=y
CONFIG_BQL=y
# CONFIG_BPF_JIT is not set
CONFIG_BPF_STREAM_PARSER=y
CONFIG_NET_FLOW_LIMIT=y

#
# Network testing
#
# CONFIG_NET_PKTGEN is not set
# CONFIG_NET_DROP_MONITOR is not set
# end of Network testing
# end of Networking options

CONFIG_HAMRADIO=y

#
# Packet Radio protocols
#
# CONFIG_AX25 is not set
CONFIG_CAN=m
CONFIG_CAN_RAW=m
CONFIG_CAN_BCM=m
CONFIG_CAN_GW=m
CONFIG_CAN_J1939=m

#
# CAN Device Drivers
#
# CONFIG_CAN_VCAN is not set
CONFIG_CAN_VXCAN=m
# CONFIG_CAN_SLCAN is not set
CONFIG_CAN_DEV=m
# CONFIG_CAN_CALC_BITTIMING is not set
CONFIG_CAN_JANZ_ICAN3=m
# CONFIG_CAN_KVASER_PCIEFD is not set
CONFIG_CAN_C_CAN=m
CONFIG_CAN_C_CAN_PLATFORM=m
# CONFIG_CAN_C_CAN_PCI is not set
CONFIG_CAN_CC770=m
# CONFIG_CAN_CC770_ISA is not set
CONFIG_CAN_CC770_PLATFORM=m
CONFIG_CAN_IFI_CANFD=m
# CONFIG_CAN_M_CAN is not set
CONFIG_CAN_PEAK_PCIEFD=m
CONFIG_CAN_SJA1000=m
CONFIG_CAN_EMS_PCI=m
CONFIG_CAN_EMS_PCMCIA=m
# CONFIG_CAN_F81601 is not set
CONFIG_CAN_KVASER_PCI=m
# CONFIG_CAN_PEAK_PCI is not set
CONFIG_CAN_PEAK_PCMCIA=m
CONFIG_CAN_PLX_PCI=m
# CONFIG_CAN_SJA1000_ISA is not set
CONFIG_CAN_SJA1000_PLATFORM=m
CONFIG_CAN_SOFTING=m
CONFIG_CAN_SOFTING_CS=m
# CONFIG_CAN_DEBUG_DEVICES is not set
# end of CAN Device Drivers

CONFIG_BT=m
# CONFIG_BT_BREDR is not set
CONFIG_BT_LE=y
# CONFIG_BT_LEDS is not set
# CONFIG_BT_MSFTEXT is not set
# CONFIG_BT_DEBUGFS is not set
CONFIG_BT_SELFTEST=y
# CONFIG_BT_SELFTEST_ECDH is not set
# CONFIG_BT_SELFTEST_SMP is not set

#
# Bluetooth device drivers
#
CONFIG_BT_HCIBTSDIO=m
# CONFIG_BT_HCIUART is not set
CONFIG_BT_HCIDTL1=m
# CONFIG_BT_HCIBT3C is not set
# CONFIG_BT_HCIBLUECARD is not set
CONFIG_BT_HCIVHCI=m
CONFIG_BT_MRVL=m
CONFIG_BT_MRVL_SDIO=m
CONFIG_BT_MTKSDIO=m
# CONFIG_BT_MTKUART is not set
# end of Bluetooth device drivers

# CONFIG_AF_RXRPC is not set
# CONFIG_AF_KCM is not set
CONFIG_STREAM_PARSER=y
CONFIG_FIB_RULES=y
CONFIG_WIRELESS=y
CONFIG_CFG80211=m
CONFIG_NL80211_TESTMODE=y
# CONFIG_CFG80211_DEVELOPER_WARNINGS is not set
# CONFIG_CFG80211_CERTIFICATION_ONUS is not set
CONFIG_CFG80211_REQUIRE_SIGNED_REGDB=y
CONFIG_CFG80211_USE_KERNEL_REGDB_KEYS=y
# CONFIG_CFG80211_DEFAULT_PS is not set
# CONFIG_CFG80211_DEBUGFS is not set
CONFIG_CFG80211_CRDA_SUPPORT=y
# CONFIG_CFG80211_WEXT is not set
# CONFIG_MAC80211 is not set
CONFIG_MAC80211_STA_HASH_MAX_SIZE=0
CONFIG_WIMAX=y
CONFIG_WIMAX_DEBUG_LEVEL=8
# CONFIG_RFKILL is not set
CONFIG_NET_9P=y
CONFIG_NET_9P_VIRTIO=m
# CONFIG_NET_9P_XEN is not set
# CONFIG_NET_9P_DEBUG is not set
CONFIG_CAIF=m
CONFIG_CAIF_DEBUG=y
CONFIG_CAIF_NETDEV=m
CONFIG_CAIF_USB=m
# CONFIG_CEPH_LIB is not set
CONFIG_NFC=y
CONFIG_NFC_DIGITAL=y
CONFIG_NFC_NCI=m
# CONFIG_NFC_NCI_UART is not set
CONFIG_NFC_HCI=y
# CONFIG_NFC_SHDLC is not set

#
# Near Field Communication (NFC) devices
#
CONFIG_NFC_MEI_PHY=m
CONFIG_NFC_SIM=m
CONFIG_NFC_FDP=m
# CONFIG_NFC_FDP_I2C is not set
CONFIG_NFC_PN544=m
CONFIG_NFC_PN544_MEI=m
CONFIG_NFC_PN533=m
# CONFIG_NFC_PN533_I2C is not set
CONFIG_NFC_PN532_UART=m
# CONFIG_NFC_MICROREAD_MEI is not set
# CONFIG_NFC_ST_NCI_I2C is not set
CONFIG_NFC_NXP_NCI=m
CONFIG_NFC_NXP_NCI_I2C=m
CONFIG_NFC_S3FWRN5=m
CONFIG_NFC_S3FWRN5_I2C=m
# end of Near Field Communication (NFC) devices

CONFIG_PSAMPLE=y
CONFIG_NET_IFE=m
CONFIG_LWTUNNEL=y
CONFIG_LWTUNNEL_BPF=y
CONFIG_DST_CACHE=y
CONFIG_GRO_CELLS=y
CONFIG_NET_SOCK_MSG=y
CONFIG_FAILOVER=m
CONFIG_ETHTOOL_NETLINK=y
CONFIG_HAVE_EBPF_JIT=y

#
# Device Drivers
#
CONFIG_HAVE_EISA=y
# CONFIG_EISA is not set
CONFIG_HAVE_PCI=y
CONFIG_PCI=y
CONFIG_PCI_DOMAINS=y
CONFIG_PCIEPORTBUS=y
CONFIG_HOTPLUG_PCI_PCIE=y
# CONFIG_PCIEAER is not set
CONFIG_PCIEASPM=y
# CONFIG_PCIEASPM_DEFAULT is not set
# CONFIG_PCIEASPM_POWERSAVE is not set
# CONFIG_PCIEASPM_POWER_SUPERSAVE is not set
CONFIG_PCIEASPM_PERFORMANCE=y
CONFIG_PCIE_PME=y
CONFIG_PCIE_PTM=y
CONFIG_PCIE_BW=y
# CONFIG_PCI_MSI is not set
CONFIG_PCI_QUIRKS=y
# CONFIG_PCI_DEBUG is not set
CONFIG_PCI_REALLOC_ENABLE_AUTO=y
# CONFIG_PCI_STUB is not set
CONFIG_PCI_PF_STUB=y
# CONFIG_XEN_PCIDEV_FRONTEND is not set
CONFIG_PCI_ATS=y
CONFIG_PCI_LOCKLESS_CONFIG=y
CONFIG_PCI_IOV=y
CONFIG_PCI_PRI=y
CONFIG_PCI_PASID=y
CONFIG_PCI_LABEL=y
CONFIG_HOTPLUG_PCI=y
# CONFIG_HOTPLUG_PCI_ACPI is not set
CONFIG_HOTPLUG_PCI_CPCI=y
CONFIG_HOTPLUG_PCI_CPCI_ZT5550=y
CONFIG_HOTPLUG_PCI_CPCI_GENERIC=m
CONFIG_HOTPLUG_PCI_SHPC=y

#
# PCI controller drivers
#

#
# DesignWare PCI Core Support
#
# end of DesignWare PCI Core Support

#
# Mobiveil PCIe Core Support
#
# end of Mobiveil PCIe Core Support

#
# Cadence PCIe controllers support
#
# end of Cadence PCIe controllers support
# end of PCI controller drivers

#
# PCI Endpoint
#
CONFIG_PCI_ENDPOINT=y
CONFIG_PCI_ENDPOINT_CONFIGFS=y
# CONFIG_PCI_EPF_TEST is not set
# end of PCI Endpoint

#
# PCI switch controller drivers
#
# CONFIG_PCI_SW_SWITCHTEC is not set
# end of PCI switch controller drivers

CONFIG_PCCARD=y
CONFIG_PCMCIA=y
# CONFIG_PCMCIA_LOAD_CIS is not set
# CONFIG_CARDBUS is not set

#
# PC-card bridges
#
# CONFIG_YENTA is not set
CONFIG_PD6729=y
CONFIG_I82092=y
CONFIG_PCCARD_NONSTATIC=y
CONFIG_RAPIDIO=m
CONFIG_RAPIDIO_TSI721=m
CONFIG_RAPIDIO_DISC_TIMEOUT=30
# CONFIG_RAPIDIO_ENABLE_RX_TX_PORTS is not set
CONFIG_RAPIDIO_DMA_ENGINE=y
# CONFIG_RAPIDIO_DEBUG is not set
# CONFIG_RAPIDIO_ENUM_BASIC is not set
# CONFIG_RAPIDIO_CHMAN is not set
CONFIG_RAPIDIO_MPORT_CDEV=m

#
# RapidIO Switch drivers
#
CONFIG_RAPIDIO_TSI57X=m
# CONFIG_RAPIDIO_CPS_XX is not set
# CONFIG_RAPIDIO_TSI568 is not set
# CONFIG_RAPIDIO_CPS_GEN2 is not set
# CONFIG_RAPIDIO_RXS_GEN3 is not set
# end of RapidIO Switch drivers

#
# Generic Driver Options
#
# CONFIG_UEVENT_HELPER is not set
CONFIG_DEVTMPFS=y
# CONFIG_DEVTMPFS_MOUNT is not set
# CONFIG_STANDALONE is not set
CONFIG_PREVENT_FIRMWARE_BUILD=y

#
# Firmware loader
#
CONFIG_FW_LOADER=y
CONFIG_FW_LOADER_PAGED_BUF=y
CONFIG_EXTRA_FIRMWARE=""
CONFIG_FW_LOADER_USER_HELPER=y
# CONFIG_FW_LOADER_USER_HELPER_FALLBACK is not set
CONFIG_FW_LOADER_COMPRESS=y
# CONFIG_FW_CACHE is not set
# end of Firmware loader

CONFIG_WANT_DEV_COREDUMP=y
CONFIG_ALLOW_DEV_COREDUMP=y
CONFIG_DEV_COREDUMP=y
# CONFIG_DEBUG_DRIVER is not set
CONFIG_DEBUG_DEVRES=y
# CONFIG_DEBUG_TEST_DRIVER_REMOVE is not set
# CONFIG_PM_QOS_KUNIT_TEST is not set
CONFIG_TEST_ASYNC_DRIVER_PROBE=m
# CONFIG_KUNIT_DRIVER_PE_TEST is not set
CONFIG_SYS_HYPERVISOR=y
CONFIG_GENERIC_CPU_AUTOPROBE=y
CONFIG_GENERIC_CPU_VULNERABILITIES=y
CONFIG_REGMAP=y
CONFIG_REGMAP_I2C=y
CONFIG_REGMAP_W1=y
CONFIG_REGMAP_MMIO=y
CONFIG_REGMAP_IRQ=y
CONFIG_REGMAP_SCCB=m
CONFIG_DMA_SHARED_BUFFER=y
CONFIG_DMA_FENCE_TRACE=y
# end of Generic Driver Options

#
# Bus devices
#
CONFIG_MHI_BUS=y
# end of Bus devices

CONFIG_CONNECTOR=m
CONFIG_GNSS=m
CONFIG_GNSS_SERIAL=m
CONFIG_GNSS_MTK_SERIAL=m
CONFIG_GNSS_SIRF_SERIAL=m
# CONFIG_GNSS_UBX_SERIAL is not set
CONFIG_MTD=y
CONFIG_MTD_TESTS=m

#
# Partition parsers
#
CONFIG_MTD_AR7_PARTS=y
CONFIG_MTD_CMDLINE_PARTS=y
# CONFIG_MTD_REDBOOT_PARTS is not set
# end of Partition parsers

#
# User Modules And Translation Layers
#
CONFIG_MTD_BLKDEVS=y
# CONFIG_MTD_BLOCK is not set
# CONFIG_MTD_BLOCK_RO is not set
# CONFIG_FTL is not set
CONFIG_NFTL=y
# CONFIG_NFTL_RW is not set
CONFIG_INFTL=m
CONFIG_RFD_FTL=y
# CONFIG_SSFDC is not set
CONFIG_SM_FTL=m
CONFIG_MTD_OOPS=y
# CONFIG_MTD_PARTITIONED_MASTER is not set

#
# RAM/ROM/Flash chip drivers
#
CONFIG_MTD_CFI=m
CONFIG_MTD_JEDECPROBE=m
CONFIG_MTD_GEN_PROBE=m
# CONFIG_MTD_CFI_ADV_OPTIONS is not set
CONFIG_MTD_MAP_BANK_WIDTH_1=y
CONFIG_MTD_MAP_BANK_WIDTH_2=y
CONFIG_MTD_MAP_BANK_WIDTH_4=y
CONFIG_MTD_CFI_I1=y
CONFIG_MTD_CFI_I2=y
CONFIG_MTD_CFI_INTELEXT=m
CONFIG_MTD_CFI_AMDSTD=m
CONFIG_MTD_CFI_STAA=m
CONFIG_MTD_CFI_UTIL=m
CONFIG_MTD_RAM=m
CONFIG_MTD_ROM=y
CONFIG_MTD_ABSENT=y
# end of RAM/ROM/Flash chip drivers

#
# Mapping drivers for chip access
#
CONFIG_MTD_COMPLEX_MAPPINGS=y
# CONFIG_MTD_PHYSMAP is not set
CONFIG_MTD_SBC_GXX=m
CONFIG_MTD_AMD76XROM=m
# CONFIG_MTD_ICHXROM is not set
CONFIG_MTD_ESB2ROM=m
CONFIG_MTD_CK804XROM=m
CONFIG_MTD_SCB2_FLASH=m
# CONFIG_MTD_NETtel is not set
CONFIG_MTD_L440GX=m
CONFIG_MTD_PCI=m
CONFIG_MTD_PCMCIA=y
# CONFIG_MTD_PCMCIA_ANONYMOUS is not set
CONFIG_MTD_INTEL_VR_NOR=y
# CONFIG_MTD_PLATRAM is not set
# end of Mapping drivers for chip access

#
# Self-contained MTD device drivers
#
CONFIG_MTD_PMC551=y
CONFIG_MTD_PMC551_BUGFIX=y
CONFIG_MTD_PMC551_DEBUG=y
CONFIG_MTD_SLRAM=y
# CONFIG_MTD_PHRAM is not set
CONFIG_MTD_MTDRAM=m
CONFIG_MTDRAM_TOTAL_SIZE=4096
CONFIG_MTDRAM_ERASE_SIZE=128
# CONFIG_MTD_BLOCK2MTD is not set

#
# Disk-On-Chip Device Drivers
#
CONFIG_MTD_DOCG3=y
CONFIG_BCH_CONST_M=14
CONFIG_BCH_CONST_T=4
# end of Self-contained MTD device drivers

CONFIG_MTD_NAND_CORE=m
# CONFIG_MTD_ONENAND is not set
CONFIG_MTD_NAND_ECC_SW_HAMMING=m
# CONFIG_MTD_NAND_ECC_SW_HAMMING_SMC is not set
CONFIG_MTD_RAW_NAND=m
CONFIG_MTD_NAND_ECC_SW_BCH=y

#
# Raw/parallel NAND flash controllers
#
# CONFIG_MTD_NAND_DENALI_PCI is not set
CONFIG_MTD_NAND_CAFE=m
CONFIG_MTD_NAND_MXIC=m
CONFIG_MTD_NAND_GPIO=m
CONFIG_MTD_NAND_PLATFORM=m

#
# Misc
#
CONFIG_MTD_SM_COMMON=m
CONFIG_MTD_NAND_NANDSIM=m
CONFIG_MTD_NAND_RICOH=m
# CONFIG_MTD_NAND_DISKONCHIP is not set

#
# LPDDR & LPDDR2 PCM memory drivers
#
# CONFIG_MTD_LPDDR is not set
# end of LPDDR & LPDDR2 PCM memory drivers

CONFIG_MTD_UBI=m
CONFIG_MTD_UBI_WL_THRESHOLD=4096
CONFIG_MTD_UBI_BEB_LIMIT=20
CONFIG_MTD_UBI_FASTMAP=y
CONFIG_MTD_UBI_GLUEBI=m
CONFIG_MTD_UBI_BLOCK=y
CONFIG_MTD_HYPERBUS=m
# CONFIG_OF is not set
CONFIG_ARCH_MIGHT_HAVE_PC_PARPORT=y
CONFIG_PARPORT=y
# CONFIG_PARPORT_PC is not set
# CONFIG_PARPORT_AX88796 is not set
# CONFIG_PARPORT_1284 is not set
CONFIG_PNP=y
CONFIG_PNP_DEBUG_MESSAGES=y

#
# Protocols
#
CONFIG_PNPACPI=y
CONFIG_BLK_DEV=y
# CONFIG_BLK_DEV_NULL_BLK is not set
# CONFIG_BLK_DEV_FD is not set
# CONFIG_BLK_DEV_PCIESSD_MTIP32XX is not set
# CONFIG_ZRAM is not set
# CONFIG_BLK_DEV_UMEM is not set
# CONFIG_BLK_DEV_LOOP is not set
# CONFIG_BLK_DEV_DRBD is not set
# CONFIG_BLK_DEV_NBD is not set
# CONFIG_BLK_DEV_SKD is not set
# CONFIG_BLK_DEV_SX8 is not set
# CONFIG_BLK_DEV_RAM is not set
# CONFIG_CDROM_PKTCDVD is not set
# CONFIG_ATA_OVER_ETH is not set
CONFIG_XEN_BLKDEV_FRONTEND=y
# CONFIG_XEN_BLKDEV_BACKEND is not set
# CONFIG_VIRTIO_BLK is not set
# CONFIG_BLK_DEV_RBD is not set
# CONFIG_BLK_DEV_RSXX is not set

#
# NVME Support
#
CONFIG_NVME_CORE=y
CONFIG_BLK_DEV_NVME=m
CONFIG_NVME_MULTIPATH=y
CONFIG_NVME_HWMON=y
CONFIG_NVME_FABRICS=y
CONFIG_NVME_FC=y
# CONFIG_NVME_TCP is not set
# CONFIG_NVME_TARGET is not set
# end of NVME Support

#
# Misc devices
#
CONFIG_SENSORS_LIS3LV02D=m
CONFIG_AD525X_DPOT=m
CONFIG_AD525X_DPOT_I2C=m
CONFIG_DUMMY_IRQ=m
# CONFIG_IBM_ASM is not set
# CONFIG_PHANTOM is not set
CONFIG_TIFM_CORE=y
CONFIG_TIFM_7XX1=m
# CONFIG_ICS932S401 is not set
# CONFIG_ENCLOSURE_SERVICES is not set
CONFIG_HP_ILO=y
CONFIG_APDS9802ALS=y
CONFIG_ISL29003=m
CONFIG_ISL29020=m
CONFIG_SENSORS_TSL2550=y
CONFIG_SENSORS_BH1770=y
# CONFIG_SENSORS_APDS990X is not set
CONFIG_HMC6352=y
# CONFIG_DS1682 is not set
# CONFIG_VMWARE_BALLOON is not set
CONFIG_SRAM=y
# CONFIG_PCI_ENDPOINT_TEST is not set
CONFIG_XILINX_SDFEC=m
# CONFIG_PVPANIC is not set
CONFIG_C2PORT=m
CONFIG_C2PORT_DURAMAR_2150=m

#
# EEPROM support
#
CONFIG_EEPROM_AT24=m
# CONFIG_EEPROM_LEGACY is not set
CONFIG_EEPROM_MAX6875=m
CONFIG_EEPROM_93CX6=m
# CONFIG_EEPROM_IDT_89HPESX is not set
CONFIG_EEPROM_EE1004=m
# end of EEPROM support

CONFIG_CB710_CORE=y
# CONFIG_CB710_DEBUG is not set
CONFIG_CB710_DEBUG_ASSUMPTIONS=y

#
# Texas Instruments shared transport line discipline
#
# CONFIG_TI_ST is not set
# end of Texas Instruments shared transport line discipline

CONFIG_SENSORS_LIS3_I2C=m
# CONFIG_ALTERA_STAPL is not set
CONFIG_INTEL_MEI=y
CONFIG_INTEL_MEI_ME=y
CONFIG_INTEL_MEI_TXE=m
CONFIG_INTEL_MEI_HDCP=y
CONFIG_VMWARE_VMCI=y

#
# Intel MIC & related support
#
CONFIG_INTEL_MIC_BUS=y
CONFIG_SCIF_BUS=m
# CONFIG_VOP_BUS is not set
CONFIG_SCIF=m
CONFIG_MIC_COSM=m
# end of Intel MIC & related support

CONFIG_GENWQE=y
CONFIG_GENWQE_PLATFORM_ERROR_RECOVERY=0
CONFIG_ECHO=y
CONFIG_MISC_ALCOR_PCI=m
# CONFIG_MISC_RTSX_PCI is not set
CONFIG_HABANA_AI=m
# end of Misc devices

CONFIG_HAVE_IDE=y
CONFIG_IDE=m

#
# Please see Documentation/ide/ide.rst for help/info on IDE drives
#
CONFIG_IDE_XFER_MODE=y
CONFIG_IDE_TIMINGS=y
# CONFIG_BLK_DEV_IDE_SATA is not set
# CONFIG_IDE_GD is not set
CONFIG_BLK_DEV_IDECS=m
# CONFIG_BLK_DEV_IDECD is not set
# CONFIG_BLK_DEV_IDETAPE is not set
# CONFIG_BLK_DEV_IDEACPI is not set
CONFIG_IDE_TASK_IOCTL=y
CONFIG_IDE_PROC_FS=y

#
# IDE chipset support/bugfixes
#
# CONFIG_IDE_GENERIC is not set
# CONFIG_BLK_DEV_PLATFORM is not set
CONFIG_BLK_DEV_CMD640=m
CONFIG_BLK_DEV_CMD640_ENHANCED=y
# CONFIG_BLK_DEV_IDEPNP is not set
CONFIG_BLK_DEV_IDEDMA_SFF=y

#
# PCI IDE chipsets support
#
CONFIG_BLK_DEV_IDEPCI=y
CONFIG_BLK_DEV_OFFBOARD=y
CONFIG_BLK_DEV_GENERIC=m
CONFIG_BLK_DEV_OPTI621=m
# CONFIG_BLK_DEV_RZ1000 is not set
CONFIG_BLK_DEV_IDEDMA_PCI=y
# CONFIG_BLK_DEV_AEC62XX is not set
# CONFIG_BLK_DEV_ALI15X3 is not set
# CONFIG_BLK_DEV_AMD74XX is not set
# CONFIG_BLK_DEV_ATIIXP is not set
# CONFIG_BLK_DEV_CMD64X is not set
CONFIG_BLK_DEV_TRIFLEX=m
# CONFIG_BLK_DEV_HPT366 is not set
CONFIG_BLK_DEV_JMICRON=m
CONFIG_BLK_DEV_PIIX=m
CONFIG_BLK_DEV_IT8172=m
CONFIG_BLK_DEV_IT8213=m
CONFIG_BLK_DEV_IT821X=m
CONFIG_BLK_DEV_NS87415=m
# CONFIG_BLK_DEV_PDC202XX_OLD is not set
CONFIG_BLK_DEV_PDC202XX_NEW=m
CONFIG_BLK_DEV_SVWKS=m
CONFIG_BLK_DEV_SIIMAGE=m
# CONFIG_BLK_DEV_SIS5513 is not set
CONFIG_BLK_DEV_SLC90E66=m
# CONFIG_BLK_DEV_TRM290 is not set
CONFIG_BLK_DEV_VIA82CXXX=m
CONFIG_BLK_DEV_TC86C001=m
CONFIG_BLK_DEV_IDEDMA=y

#
# SCSI device support
#
CONFIG_SCSI_MOD=m
CONFIG_RAID_ATTRS=m
CONFIG_SCSI=m
CONFIG_SCSI_DMA=y
CONFIG_SCSI_PROC_FS=y

#
# SCSI support type (disk, tape, CD-ROM)
#
# CONFIG_BLK_DEV_SD is not set
CONFIG_CHR_DEV_ST=m
# CONFIG_BLK_DEV_SR is not set
CONFIG_CHR_DEV_SG=m
# CONFIG_CHR_DEV_SCH is not set
# CONFIG_SCSI_CONSTANTS is not set
# CONFIG_SCSI_LOGGING is not set
# CONFIG_SCSI_SCAN_ASYNC is not set

#
# SCSI Transports
#
CONFIG_SCSI_SPI_ATTRS=m
# CONFIG_SCSI_FC_ATTRS is not set
CONFIG_SCSI_ISCSI_ATTRS=m
CONFIG_SCSI_SAS_ATTRS=m
CONFIG_SCSI_SAS_LIBSAS=m
# CONFIG_SCSI_SAS_HOST_SMP is not set
# CONFIG_SCSI_SRP_ATTRS is not set
# end of SCSI Transports

CONFIG_SCSI_LOWLEVEL=y
# CONFIG_ISCSI_TCP is not set
CONFIG_ISCSI_BOOT_SYSFS=m
# CONFIG_SCSI_CXGB3_ISCSI is not set
# CONFIG_SCSI_CXGB4_ISCSI is not set
# CONFIG_SCSI_BNX2_ISCSI is not set
CONFIG_BE2ISCSI=m
CONFIG_BLK_DEV_3W_XXXX_RAID=m
CONFIG_SCSI_HPSA=m
# CONFIG_SCSI_3W_9XXX is not set
CONFIG_SCSI_3W_SAS=m
CONFIG_SCSI_ACARD=m
# CONFIG_SCSI_AACRAID is not set
# CONFIG_SCSI_AIC7XXX is not set
CONFIG_SCSI_AIC79XX=m
CONFIG_AIC79XX_CMDS_PER_DEVICE=32
CONFIG_AIC79XX_RESET_DELAY_MS=5000
# CONFIG_AIC79XX_DEBUG_ENABLE is not set
CONFIG_AIC79XX_DEBUG_MASK=0
# CONFIG_AIC79XX_REG_PRETTY_PRINT is not set
CONFIG_SCSI_AIC94XX=m
CONFIG_AIC94XX_DEBUG=y
# CONFIG_SCSI_MVSAS is not set
CONFIG_SCSI_MVUMI=m
CONFIG_SCSI_DPT_I2O=m
CONFIG_SCSI_ADVANSYS=m
CONFIG_SCSI_ARCMSR=m
# CONFIG_SCSI_ESAS2R is not set
CONFIG_MEGARAID_NEWGEN=y
CONFIG_MEGARAID_MM=m
CONFIG_MEGARAID_MAILBOX=m
CONFIG_MEGARAID_LEGACY=m
CONFIG_MEGARAID_SAS=m
# CONFIG_SCSI_MPT3SAS is not set
# CONFIG_SCSI_MPT2SAS is not set
# CONFIG_SCSI_SMARTPQI is not set
CONFIG_SCSI_UFSHCD=m
CONFIG_SCSI_UFSHCD_PCI=m
CONFIG_SCSI_UFS_DWC_TC_PCI=m
CONFIG_SCSI_UFSHCD_PLATFORM=m
# CONFIG_SCSI_UFS_CDNS_PLATFORM is not set
CONFIG_SCSI_UFS_DWC_TC_PLATFORM=m
# CONFIG_SCSI_UFS_BSG is not set
CONFIG_SCSI_HPTIOP=m
# CONFIG_SCSI_BUSLOGIC is not set
CONFIG_SCSI_MYRB=m
CONFIG_SCSI_MYRS=m
CONFIG_VMWARE_PVSCSI=m
# CONFIG_XEN_SCSI_FRONTEND is not set
# CONFIG_SCSI_SNIC is not set
CONFIG_SCSI_DMX3191D=m
CONFIG_SCSI_FDOMAIN=m
CONFIG_SCSI_FDOMAIN_PCI=m
# CONFIG_SCSI_GDTH is not set
CONFIG_SCSI_ISCI=m
# CONFIG_SCSI_IPS is not set
CONFIG_SCSI_INITIO=m
# CONFIG_SCSI_INIA100 is not set
# CONFIG_SCSI_STEX is not set
CONFIG_SCSI_SYM53C8XX_2=m
CONFIG_SCSI_SYM53C8XX_DMA_ADDRESSING_MODE=1
CONFIG_SCSI_SYM53C8XX_DEFAULT_TAGS=16
CONFIG_SCSI_SYM53C8XX_MAX_TAGS=64
CONFIG_SCSI_SYM53C8XX_MMIO=y
CONFIG_SCSI_QLOGIC_1280=m
CONFIG_SCSI_QLA_ISCSI=m
CONFIG_SCSI_DC395x=m
CONFIG_SCSI_AM53C974=m
# CONFIG_SCSI_WD719X is not set
CONFIG_SCSI_DEBUG=m
CONFIG_SCSI_PMCRAID=m
CONFIG_SCSI_PM8001=m
CONFIG_SCSI_VIRTIO=m
# CONFIG_SCSI_LOWLEVEL_PCMCIA is not set
CONFIG_SCSI_DH=y
CONFIG_SCSI_DH_RDAC=m
CONFIG_SCSI_DH_HP_SW=m
# CONFIG_SCSI_DH_EMC is not set
CONFIG_SCSI_DH_ALUA=m
# end of SCSI device support

# CONFIG_ATA is not set
CONFIG_MD=y
CONFIG_BLK_DEV_MD=y
CONFIG_MD_AUTODETECT=y
# CONFIG_MD_LINEAR is not set
# CONFIG_MD_RAID0 is not set
CONFIG_MD_RAID1=m
CONFIG_MD_RAID10=m
# CONFIG_MD_RAID456 is not set
CONFIG_MD_MULTIPATH=m
CONFIG_MD_FAULTY=y
CONFIG_BCACHE=m
# CONFIG_BCACHE_DEBUG is not set
CONFIG_BCACHE_CLOSURES_DEBUG=y
# CONFIG_BLK_DEV_DM is not set
CONFIG_TARGET_CORE=y
# CONFIG_TCM_IBLOCK is not set
# CONFIG_TCM_FILEIO is not set
# CONFIG_TCM_PSCSI is not set
CONFIG_LOOPBACK_TARGET=m
CONFIG_ISCSI_TARGET=y
# CONFIG_SBP_TARGET is not set
CONFIG_FUSION=y
# CONFIG_FUSION_SPI is not set
CONFIG_FUSION_SAS=m
CONFIG_FUSION_MAX_SGE=128
# CONFIG_FUSION_CTL is not set
# CONFIG_FUSION_LOGGING is not set

#
# IEEE 1394 (FireWire) support
#
CONFIG_FIREWIRE=y
CONFIG_FIREWIRE_OHCI=y
CONFIG_FIREWIRE_SBP2=m
# CONFIG_FIREWIRE_NET is not set
# CONFIG_FIREWIRE_NOSY is not set
# end of IEEE 1394 (FireWire) support

CONFIG_MACINTOSH_DRIVERS=y
# CONFIG_MAC_EMUMOUSEBTN is not set
CONFIG_NETDEVICES=y
CONFIG_NET_CORE=y
# CONFIG_BONDING is not set
# CONFIG_DUMMY is not set
# CONFIG_WIREGUARD is not set
# CONFIG_EQUALIZER is not set
# CONFIG_NET_FC is not set
# CONFIG_NET_TEAM is not set
# CONFIG_MACVLAN is not set
# CONFIG_IPVLAN is not set
# CONFIG_VXLAN is not set
# CONFIG_GENEVE is not set
# CONFIG_BAREUDP is not set
# CONFIG_GTP is not set
CONFIG_MACSEC=y
# CONFIG_NETCONSOLE is not set
# CONFIG_NTB_NETDEV is not set
# CONFIG_RIONET is not set
CONFIG_TUN=m
# CONFIG_TUN_VNET_CROSS_LE is not set
CONFIG_VETH=m
# CONFIG_VIRTIO_NET is not set
# CONFIG_NLMON is not set
CONFIG_NET_VRF=y
# CONFIG_ARCNET is not set
# CONFIG_CAIF_DRIVERS is not set

#
# Distributed Switch Architecture drivers
#
# end of Distributed Switch Architecture drivers

CONFIG_ETHERNET=y
CONFIG_NET_VENDOR_3COM=y
# CONFIG_PCMCIA_3C574 is not set
# CONFIG_PCMCIA_3C589 is not set
# CONFIG_VORTEX is not set
# CONFIG_TYPHOON is not set
CONFIG_NET_VENDOR_ADAPTEC=y
# CONFIG_ADAPTEC_STARFIRE is not set
CONFIG_NET_VENDOR_AGERE=y
# CONFIG_ET131X is not set
CONFIG_NET_VENDOR_ALACRITECH=y
# CONFIG_SLICOSS is not set
CONFIG_NET_VENDOR_ALTEON=y
# CONFIG_ACENIC is not set
# CONFIG_ALTERA_TSE is not set
CONFIG_NET_VENDOR_AMAZON=y
CONFIG_NET_VENDOR_AMD=y
# CONFIG_AMD8111_ETH is not set
# CONFIG_PCNET32 is not set
# CONFIG_PCMCIA_NMCLAN is not set
# CONFIG_AMD_XGBE is not set
CONFIG_NET_VENDOR_AQUANTIA=y
# CONFIG_AQTION is not set
CONFIG_NET_VENDOR_ARC=y
CONFIG_NET_VENDOR_ATHEROS=y
# CONFIG_ATL2 is not set
# CONFIG_ATL1 is not set
# CONFIG_ATL1E is not set
# CONFIG_ATL1C is not set
# CONFIG_ALX is not set
CONFIG_NET_VENDOR_AURORA=y
# CONFIG_AURORA_NB8800 is not set
CONFIG_NET_VENDOR_BROADCOM=y
# CONFIG_B44 is not set
# CONFIG_BCMGENET is not set
# CONFIG_BNX2 is not set
# CONFIG_CNIC is not set
# CONFIG_TIGON3 is not set
# CONFIG_BNX2X is not set
# CONFIG_SYSTEMPORT is not set
# CONFIG_BNXT is not set
CONFIG_NET_VENDOR_BROCADE=y
# CONFIG_BNA is not set
CONFIG_NET_VENDOR_CADENCE=y
# CONFIG_MACB is not set
CONFIG_NET_VENDOR_CAVIUM=y
# CONFIG_THUNDER_NIC_PF is not set
# CONFIG_THUNDER_NIC_VF is not set
# CONFIG_THUNDER_NIC_BGX is not set
# CONFIG_THUNDER_NIC_RGX is not set
# CONFIG_CAVIUM_PTP is not set
# CONFIG_LIQUIDIO is not set
CONFIG_NET_VENDOR_CHELSIO=y
# CONFIG_CHELSIO_T1 is not set
# CONFIG_CHELSIO_T3 is not set
# CONFIG_CHELSIO_T4 is not set
# CONFIG_CHELSIO_T4VF is not set
CONFIG_NET_VENDOR_CISCO=y
# CONFIG_ENIC is not set
CONFIG_NET_VENDOR_CORTINA=y
# CONFIG_CX_ECAT is not set
# CONFIG_DNET is not set
CONFIG_NET_VENDOR_DEC=y
# CONFIG_NET_TULIP is not set
CONFIG_NET_VENDOR_DLINK=y
# CONFIG_DL2K is not set
# CONFIG_SUNDANCE is not set
CONFIG_NET_VENDOR_EMULEX=y
# CONFIG_BE2NET is not set
CONFIG_NET_VENDOR_EZCHIP=y
CONFIG_NET_VENDOR_FUJITSU=y
# CONFIG_PCMCIA_FMVJ18X is not set
CONFIG_NET_VENDOR_GOOGLE=y
CONFIG_NET_VENDOR_HUAWEI=y
CONFIG_NET_VENDOR_I825XX=y
CONFIG_NET_VENDOR_INTEL=y
# CONFIG_E100 is not set
CONFIG_E1000=y
# CONFIG_E1000E is not set
# CONFIG_IGB is not set
# CONFIG_IGBVF is not set
# CONFIG_IXGB is not set
# CONFIG_IXGBE is not set
# CONFIG_I40E is not set
# CONFIG_IGC is not set
# CONFIG_JME is not set
CONFIG_NET_VENDOR_MARVELL=y
# CONFIG_MVMDIO is not set
# CONFIG_SKGE is not set
# CONFIG_SKY2 is not set
CONFIG_NET_VENDOR_MELLANOX=y
# CONFIG_MLX4_EN is not set
# CONFIG_MLX5_CORE is not set
# CONFIG_MLXSW_CORE is not set
# CONFIG_MLXFW is not set
CONFIG_NET_VENDOR_MICREL=y
# CONFIG_KS8842 is not set
# CONFIG_KS8851_MLL is not set
# CONFIG_KSZ884X_PCI is not set
CONFIG_NET_VENDOR_MICROCHIP=y
# CONFIG_LAN743X is not set
CONFIG_NET_VENDOR_MICROSEMI=y
CONFIG_NET_VENDOR_MYRI=y
# CONFIG_MYRI10GE is not set
# CONFIG_FEALNX is not set
CONFIG_NET_VENDOR_NATSEMI=y
# CONFIG_NATSEMI is not set
# CONFIG_NS83820 is not set
CONFIG_NET_VENDOR_NETERION=y
# CONFIG_S2IO is not set
# CONFIG_VXGE is not set
CONFIG_NET_VENDOR_NETRONOME=y
CONFIG_NET_VENDOR_NI=y
# CONFIG_NI_XGE_MANAGEMENT_ENET is not set
CONFIG_NET_VENDOR_8390=y
# CONFIG_PCMCIA_AXNET is not set
# CONFIG_NE2K_PCI is not set
# CONFIG_PCMCIA_PCNET is not set
CONFIG_NET_VENDOR_NVIDIA=y
# CONFIG_FORCEDETH is not set
CONFIG_NET_VENDOR_OKI=y
# CONFIG_ETHOC is not set
CONFIG_NET_VENDOR_PACKET_ENGINES=y
# CONFIG_HAMACHI is not set
# CONFIG_YELLOWFIN is not set
CONFIG_NET_VENDOR_PENSANDO=y
# CONFIG_IONIC is not set
CONFIG_NET_VENDOR_QLOGIC=y
# CONFIG_QLA3XXX is not set
# CONFIG_QLCNIC is not set
# CONFIG_NETXEN_NIC is not set
# CONFIG_QED is not set
CONFIG_NET_VENDOR_QUALCOMM=y
# CONFIG_QCOM_EMAC is not set
# CONFIG_RMNET is not set
CONFIG_NET_VENDOR_RDC=y
# CONFIG_R6040 is not set
CONFIG_NET_VENDOR_REALTEK=y
# CONFIG_ATP is not set
# CONFIG_8139CP is not set
# CONFIG_8139TOO is not set
# CONFIG_R8169 is not set
CONFIG_NET_VENDOR_RENESAS=y
CONFIG_NET_VENDOR_ROCKER=y
CONFIG_NET_VENDOR_SAMSUNG=y
# CONFIG_SXGBE_ETH is not set
CONFIG_NET_VENDOR_SEEQ=y
CONFIG_NET_VENDOR_SOLARFLARE=y
# CONFIG_SFC is not set
# CONFIG_SFC_FALCON is not set
CONFIG_NET_VENDOR_SILAN=y
# CONFIG_SC92031 is not set
CONFIG_NET_VENDOR_SIS=y
# CONFIG_SIS900 is not set
# CONFIG_SIS190 is not set
CONFIG_NET_VENDOR_SMSC=y
# CONFIG_PCMCIA_SMC91C92 is not set
# CONFIG_EPIC100 is not set
# CONFIG_SMSC911X is not set
# CONFIG_SMSC9420 is not set
CONFIG_NET_VENDOR_SOCIONEXT=y
CONFIG_NET_VENDOR_STMICRO=y
# CONFIG_STMMAC_ETH is not set
CONFIG_NET_VENDOR_SUN=y
# CONFIG_HAPPYMEAL is not set
# CONFIG_SUNGEM is not set
# CONFIG_CASSINI is not set
# CONFIG_NIU is not set
CONFIG_NET_VENDOR_SYNOPSYS=y
# CONFIG_DWC_XLGMAC is not set
CONFIG_NET_VENDOR_TEHUTI=y
# CONFIG_TEHUTI is not set
CONFIG_NET_VENDOR_TI=y
# CONFIG_TI_CPSW_PHY_SEL is not set
# CONFIG_TLAN is not set
CONFIG_NET_VENDOR_VIA=y
# CONFIG_VIA_RHINE is not set
# CONFIG_VIA_VELOCITY is not set
CONFIG_NET_VENDOR_WIZNET=y
# CONFIG_WIZNET_W5100 is not set
# CONFIG_WIZNET_W5300 is not set
CONFIG_NET_VENDOR_XILINX=y
# CONFIG_XILINX_AXI_EMAC is not set
# CONFIG_XILINX_LL_TEMAC is not set
CONFIG_NET_VENDOR_XIRCOM=y
# CONFIG_PCMCIA_XIRC2PS is not set
# CONFIG_FDDI is not set
# CONFIG_HIPPI is not set
# CONFIG_NET_SB1000 is not set
# CONFIG_MDIO_DEVICE is not set
# CONFIG_PHYLIB is not set
# CONFIG_PLIP is not set
# CONFIG_PPP is not set
# CONFIG_SLIP is not set

#
# Host-side USB support is needed for USB Network Adapter support
#
CONFIG_WLAN=y
# CONFIG_WIRELESS_WDS is not set
CONFIG_WLAN_VENDOR_ADMTEK=y
CONFIG_WLAN_VENDOR_ATH=y
# CONFIG_ATH_DEBUG is not set
# CONFIG_ATH5K_PCI is not set
# CONFIG_ATH6KL is not set
# CONFIG_WIL6210 is not set
CONFIG_WLAN_VENDOR_ATMEL=y
# CONFIG_ATMEL is not set
CONFIG_WLAN_VENDOR_BROADCOM=y
# CONFIG_BRCMFMAC is not set
CONFIG_WLAN_VENDOR_CISCO=y
# CONFIG_AIRO is not set
# CONFIG_AIRO_CS is not set
CONFIG_WLAN_VENDOR_INTEL=y
# CONFIG_IPW2100 is not set
# CONFIG_IPW2200 is not set
# CONFIG_IWLWIFI is not set
CONFIG_WLAN_VENDOR_INTERSIL=y
# CONFIG_HOSTAP is not set
# CONFIG_HERMES is not set
# CONFIG_PRISM54 is not set
CONFIG_WLAN_VENDOR_MARVELL=y
# CONFIG_LIBERTAS is not set
# CONFIG_MWIFIEX is not set
CONFIG_WLAN_VENDOR_MEDIATEK=y
CONFIG_WLAN_VENDOR_RALINK=y
CONFIG_WLAN_VENDOR_REALTEK=y
CONFIG_WLAN_VENDOR_RSI=y
CONFIG_WLAN_VENDOR_ST=y
CONFIG_WLAN_VENDOR_TI=y
CONFIG_WLAN_VENDOR_ZYDAS=y
CONFIG_WLAN_VENDOR_QUANTENNA=y
# CONFIG_QTNFMAC_PCIE is not set
# CONFIG_PCMCIA_RAYCS is not set
# CONFIG_PCMCIA_WL3501 is not set
# CONFIG_VIRT_WIFI is not set

#
# WiMAX Wireless Broadband devices
#

#
# Enable USB support to see WiMAX USB drivers
#
# end of WiMAX Wireless Broadband devices

# CONFIG_WAN is not set
CONFIG_XEN_NETDEV_FRONTEND=y
# CONFIG_XEN_NETDEV_BACKEND is not set
# CONFIG_VMXNET3 is not set
# CONFIG_FUJITSU_ES is not set
# CONFIG_NETDEVSIM is not set
# CONFIG_NET_FAILOVER is not set
# CONFIG_ISDN is not set
CONFIG_NVM=y
CONFIG_NVM_PBLK=y
# CONFIG_NVM_PBLK_DEBUG is not set

#
# Input device support
#
CONFIG_INPUT=y
CONFIG_INPUT_LEDS=m
CONFIG_INPUT_FF_MEMLESS=y
CONFIG_INPUT_POLLDEV=y
CONFIG_INPUT_SPARSEKMAP=m
CONFIG_INPUT_MATRIXKMAP=y

#
# Userland interfaces
#
# CONFIG_INPUT_MOUSEDEV is not set
# CONFIG_INPUT_JOYDEV is not set
# CONFIG_INPUT_EVDEV is not set
CONFIG_INPUT_EVBUG=y

#
# Input Device Drivers
#
CONFIG_INPUT_KEYBOARD=y
# CONFIG_KEYBOARD_ADP5588 is not set
CONFIG_KEYBOARD_ADP5589=m
CONFIG_KEYBOARD_ATKBD=y
CONFIG_KEYBOARD_QT1050=m
# CONFIG_KEYBOARD_QT1070 is not set
CONFIG_KEYBOARD_QT2160=m
CONFIG_KEYBOARD_DLINK_DIR685=m
CONFIG_KEYBOARD_LKKBD=y
CONFIG_KEYBOARD_GPIO=m
CONFIG_KEYBOARD_GPIO_POLLED=m
# CONFIG_KEYBOARD_TCA6416 is not set
# CONFIG_KEYBOARD_TCA8418 is not set
# CONFIG_KEYBOARD_MATRIX is not set
CONFIG_KEYBOARD_LM8323=m
# CONFIG_KEYBOARD_LM8333 is not set
CONFIG_KEYBOARD_MAX7359=y
CONFIG_KEYBOARD_MCS=y
# CONFIG_KEYBOARD_MPR121 is not set
CONFIG_KEYBOARD_NEWTON=y
CONFIG_KEYBOARD_OPENCORES=m
CONFIG_KEYBOARD_SAMSUNG=m
# CONFIG_KEYBOARD_GOLDFISH_EVENTS is not set
# CONFIG_KEYBOARD_STOWAWAY is not set
CONFIG_KEYBOARD_SUNKBD=y
CONFIG_KEYBOARD_TM2_TOUCHKEY=m
CONFIG_KEYBOARD_TWL4030=m
CONFIG_KEYBOARD_XTKBD=m
CONFIG_KEYBOARD_CROS_EC=m
CONFIG_INPUT_MOUSE=y
# CONFIG_MOUSE_PS2 is not set
CONFIG_MOUSE_SERIAL=m
# CONFIG_MOUSE_APPLETOUCH is not set
# CONFIG_MOUSE_BCM5974 is not set
CONFIG_MOUSE_CYAPA=m
CONFIG_MOUSE_ELAN_I2C=y
CONFIG_MOUSE_ELAN_I2C_I2C=y
# CONFIG_MOUSE_ELAN_I2C_SMBUS is not set
CONFIG_MOUSE_VSXXXAA=m
CONFIG_MOUSE_GPIO=y
CONFIG_MOUSE_SYNAPTICS_I2C=m
# CONFIG_MOUSE_SYNAPTICS_USB is not set
CONFIG_INPUT_JOYSTICK=y
# CONFIG_JOYSTICK_ANALOG is not set
# CONFIG_JOYSTICK_A3D is not set
# CONFIG_JOYSTICK_ADI is not set
CONFIG_JOYSTICK_COBRA=m
CONFIG_JOYSTICK_GF2K=y
CONFIG_JOYSTICK_GRIP=y
CONFIG_JOYSTICK_GRIP_MP=m
CONFIG_JOYSTICK_GUILLEMOT=m
CONFIG_JOYSTICK_INTERACT=m
CONFIG_JOYSTICK_SIDEWINDER=y
CONFIG_JOYSTICK_TMDC=m
# CONFIG_JOYSTICK_IFORCE is not set
CONFIG_JOYSTICK_WARRIOR=m
CONFIG_JOYSTICK_MAGELLAN=y
CONFIG_JOYSTICK_SPACEORB=m
# CONFIG_JOYSTICK_SPACEBALL is not set
CONFIG_JOYSTICK_STINGER=m
CONFIG_JOYSTICK_TWIDJOY=m
CONFIG_JOYSTICK_ZHENHUA=m
CONFIG_JOYSTICK_DB9=y
CONFIG_JOYSTICK_GAMECON=y
CONFIG_JOYSTICK_TURBOGRAFX=y
CONFIG_JOYSTICK_AS5011=m
# CONFIG_JOYSTICK_JOYDUMP is not set
# CONFIG_JOYSTICK_XPAD is not set
# CONFIG_JOYSTICK_PXRC is not set
# CONFIG_JOYSTICK_FSIA6B is not set
CONFIG_INPUT_TABLET=y
# CONFIG_TABLET_USB_ACECAD is not set
# CONFIG_TABLET_USB_AIPTEK is not set
# CONFIG_TABLET_USB_HANWANG is not set
# CONFIG_TABLET_USB_KBTAB is not set
# CONFIG_TABLET_USB_PEGASUS is not set
CONFIG_TABLET_SERIAL_WACOM4=y
# CONFIG_INPUT_TOUCHSCREEN is not set
CONFIG_INPUT_MISC=y
CONFIG_INPUT_88PM860X_ONKEY=m
# CONFIG_INPUT_88PM80X_ONKEY is not set
# CONFIG_INPUT_AD714X is not set
CONFIG_INPUT_BMA150=y
CONFIG_INPUT_E3X0_BUTTON=m
CONFIG_INPUT_MSM_VIBRATOR=m
CONFIG_INPUT_MAX77693_HAPTIC=m
# CONFIG_INPUT_MMA8450 is not set
# CONFIG_INPUT_APANEL is not set
CONFIG_INPUT_GPIO_BEEPER=m
# CONFIG_INPUT_GPIO_DECODER is not set
CONFIG_INPUT_GPIO_VIBRA=m
# CONFIG_INPUT_ATLAS_BTNS is not set
# CONFIG_INPUT_ATI_REMOTE2 is not set
# CONFIG_INPUT_KEYSPAN_REMOTE is not set
CONFIG_INPUT_KXTJ9=m
# CONFIG_INPUT_POWERMATE is not set
# CONFIG_INPUT_YEALINK is not set
# CONFIG_INPUT_CM109 is not set
CONFIG_INPUT_REGULATOR_HAPTIC=m
CONFIG_INPUT_TWL4030_PWRBUTTON=m
CONFIG_INPUT_TWL4030_VIBRA=y
CONFIG_INPUT_TWL6040_VIBRA=m
CONFIG_INPUT_UINPUT=y
CONFIG_INPUT_PCF50633_PMU=m
CONFIG_INPUT_PCF8574=y
CONFIG_INPUT_PWM_BEEPER=m
CONFIG_INPUT_PWM_VIBRA=m
# CONFIG_INPUT_GPIO_ROTARY_ENCODER is not set
CONFIG_INPUT_DA9052_ONKEY=m
CONFIG_INPUT_DA9055_ONKEY=m
CONFIG_INPUT_DA9063_ONKEY=y
# CONFIG_INPUT_WM831X_ON is not set
CONFIG_INPUT_ADXL34X=y
# CONFIG_INPUT_ADXL34X_I2C is not set
# CONFIG_INPUT_CMA3000 is not set
# CONFIG_INPUT_XEN_KBDDEV_FRONTEND is not set
# CONFIG_INPUT_IDEAPAD_SLIDEBAR is not set
# CONFIG_INPUT_SOC_BUTTON_ARRAY is not set
CONFIG_INPUT_DRV260X_HAPTICS=y
CONFIG_INPUT_DRV2665_HAPTICS=m
CONFIG_INPUT_DRV2667_HAPTICS=m
# CONFIG_RMI4_CORE is not set

#
# Hardware I/O ports
#
CONFIG_SERIO=y
CONFIG_ARCH_MIGHT_HAVE_PC_SERIO=y
CONFIG_SERIO_I8042=y
CONFIG_SERIO_SERPORT=y
CONFIG_SERIO_CT82C710=y
CONFIG_SERIO_PARKBD=m
# CONFIG_SERIO_PCIPS2 is not set
CONFIG_SERIO_LIBPS2=y
CONFIG_SERIO_RAW=m
# CONFIG_SERIO_ALTERA_PS2 is not set
CONFIG_SERIO_PS2MULT=m
CONFIG_SERIO_ARC_PS2=y
CONFIG_SERIO_GPIO_PS2=y
CONFIG_USERIO=m
CONFIG_GAMEPORT=y
CONFIG_GAMEPORT_NS558=m
# CONFIG_GAMEPORT_L4 is not set
CONFIG_GAMEPORT_EMU10K1=y
# CONFIG_GAMEPORT_FM801 is not set
# end of Hardware I/O ports
# end of Input device support

#
# Character devices
#
CONFIG_TTY=y
# CONFIG_VT is not set
CONFIG_UNIX98_PTYS=y
CONFIG_LEGACY_PTYS=y
CONFIG_LEGACY_PTY_COUNT=256
CONFIG_LDISC_AUTOLOAD=y

#
# Serial drivers
#
CONFIG_SERIAL_EARLYCON=y
CONFIG_SERIAL_8250=y
CONFIG_SERIAL_8250_DEPRECATED_OPTIONS=y
CONFIG_SERIAL_8250_PNP=y
# CONFIG_SERIAL_8250_16550A_VARIANTS is not set
# CONFIG_SERIAL_8250_FINTEK is not set
CONFIG_SERIAL_8250_CONSOLE=y
CONFIG_SERIAL_8250_DMA=y
CONFIG_SERIAL_8250_PCI=y
CONFIG_SERIAL_8250_EXAR=y
# CONFIG_SERIAL_8250_CS is not set
# CONFIG_SERIAL_8250_MEN_MCB is not set
CONFIG_SERIAL_8250_NR_UARTS=4
CONFIG_SERIAL_8250_RUNTIME_UARTS=4
# CONFIG_SERIAL_8250_EXTENDED is not set
CONFIG_SERIAL_8250_DWLIB=y
# CONFIG_SERIAL_8250_DW is not set
# CONFIG_SERIAL_8250_RT288X is not set
CONFIG_SERIAL_8250_LPSS=y
CONFIG_SERIAL_8250_MID=y

#
# Non-8250 serial port support
#
# CONFIG_SERIAL_UARTLITE is not set
CONFIG_SERIAL_CORE=y
CONFIG_SERIAL_CORE_CONSOLE=y
# CONFIG_SERIAL_JSM is not set
# CONFIG_SERIAL_SCCNXP is not set
# CONFIG_SERIAL_SC16IS7XX is not set
# CONFIG_SERIAL_ALTERA_JTAGUART is not set
# CONFIG_SERIAL_ALTERA_UART is not set
# CONFIG_SERIAL_ARC is not set
# CONFIG_SERIAL_RP2 is not set
# CONFIG_SERIAL_FSL_LPUART is not set
# CONFIG_SERIAL_FSL_LINFLEXUART is not set
# CONFIG_SERIAL_MEN_Z135 is not set
# CONFIG_SERIAL_SPRD is not set
# end of Serial drivers

CONFIG_SERIAL_MCTRL_GPIO=y
# CONFIG_SERIAL_NONSTANDARD is not set
# CONFIG_GOLDFISH_TTY is not set
# CONFIG_N_GSM is not set
# CONFIG_NOZOMI is not set
# CONFIG_NULL_TTY is not set
# CONFIG_TRACE_SINK is not set
CONFIG_HVC_DRIVER=y
CONFIG_HVC_IRQ=y
CONFIG_HVC_XEN=y
CONFIG_HVC_XEN_FRONTEND=y
CONFIG_SERIAL_DEV_BUS=m
# CONFIG_TTY_PRINTK is not set
# CONFIG_PRINTER is not set
# CONFIG_PPDEV is not set
# CONFIG_VIRTIO_CONSOLE is not set
CONFIG_IPMI_HANDLER=y
CONFIG_IPMI_PLAT_DATA=y
CONFIG_IPMI_PANIC_EVENT=y
# CONFIG_IPMI_PANIC_STRING is not set
CONFIG_IPMI_DEVICE_INTERFACE=y
CONFIG_IPMI_SI=y
# CONFIG_IPMI_SSIF is not set
# CONFIG_IPMI_WATCHDOG is not set
CONFIG_IPMI_POWEROFF=m
CONFIG_IPMB_DEVICE_INTERFACE=m
CONFIG_HW_RANDOM=y
# CONFIG_HW_RANDOM_TIMERIOMEM is not set
# CONFIG_HW_RANDOM_INTEL is not set
CONFIG_HW_RANDOM_AMD=m
# CONFIG_HW_RANDOM_VIA is not set
# CONFIG_HW_RANDOM_VIRTIO is not set
CONFIG_HW_RANDOM_CCTRNG=y
CONFIG_APPLICOM=m

#
# PCMCIA character devices
#
# CONFIG_SYNCLINK_CS is not set
# CONFIG_CARDMAN_4000 is not set
CONFIG_CARDMAN_4040=m
CONFIG_SCR24X=y
# CONFIG_IPWIRELESS is not set
# end of PCMCIA character devices

# CONFIG_MWAVE is not set
CONFIG_DEVMEM=y
CONFIG_DEVKMEM=y
# CONFIG_NVRAM is not set
CONFIG_RAW_DRIVER=m
CONFIG_MAX_RAW_DEVS=256
CONFIG_DEVPORT=y
# CONFIG_HPET is not set
CONFIG_HANGCHECK_TIMER=y
CONFIG_TCG_TPM=m
# CONFIG_HW_RANDOM_TPM is not set
CONFIG_TCG_TIS_CORE=m
CONFIG_TCG_TIS=m
CONFIG_TCG_TIS_I2C_ATMEL=m
# CONFIG_TCG_TIS_I2C_INFINEON is not set
CONFIG_TCG_TIS_I2C_NUVOTON=m
CONFIG_TCG_NSC=m
CONFIG_TCG_ATMEL=m
# CONFIG_TCG_INFINEON is not set
CONFIG_TCG_XEN=m
# CONFIG_TCG_CRB is not set
# CONFIG_TCG_VTPM_PROXY is not set
CONFIG_TCG_TIS_ST33ZP24=m
CONFIG_TCG_TIS_ST33ZP24_I2C=m
# CONFIG_TELCLOCK is not set
CONFIG_XILLYBUS=m
# end of Character devices

CONFIG_RANDOM_TRUST_CPU=y
CONFIG_RANDOM_TRUST_BOOTLOADER=y

#
# I2C support
#
CONFIG_I2C=y
CONFIG_ACPI_I2C_OPREGION=y
CONFIG_I2C_BOARDINFO=y
CONFIG_I2C_COMPAT=y
CONFIG_I2C_CHARDEV=y
CONFIG_I2C_MUX=m

#
# Multiplexer I2C Chip support
#
CONFIG_I2C_MUX_GPIO=m
CONFIG_I2C_MUX_LTC4306=m
CONFIG_I2C_MUX_PCA9541=m
# CONFIG_I2C_MUX_PCA954x is not set
CONFIG_I2C_MUX_REG=m
CONFIG_I2C_MUX_MLXCPLD=m
# end of Multiplexer I2C Chip support

# CONFIG_I2C_HELPER_AUTO is not set
CONFIG_I2C_SMBUS=y

#
# I2C Algorithms
#
CONFIG_I2C_ALGOBIT=y
# CONFIG_I2C_ALGOPCF is not set
# CONFIG_I2C_ALGOPCA is not set
# end of I2C Algorithms

#
# I2C Hardware Bus support
#

#
# PC SMBus host controller drivers
#
# CONFIG_I2C_ALI1535 is not set
# CONFIG_I2C_ALI1563 is not set
# CONFIG_I2C_ALI15X3 is not set
CONFIG_I2C_AMD756=m
# CONFIG_I2C_AMD756_S4882 is not set
CONFIG_I2C_AMD8111=m
# CONFIG_I2C_AMD_MP2 is not set
CONFIG_I2C_I801=y
CONFIG_I2C_ISCH=m
CONFIG_I2C_ISMT=y
CONFIG_I2C_PIIX4=y
# CONFIG_I2C_NFORCE2 is not set
CONFIG_I2C_NVIDIA_GPU=m
CONFIG_I2C_SIS5595=m
CONFIG_I2C_SIS630=m
CONFIG_I2C_SIS96X=y
# CONFIG_I2C_VIA is not set
CONFIG_I2C_VIAPRO=y

#
# ACPI drivers
#
# CONFIG_I2C_SCMI is not set

#
# I2C system bus drivers (mostly embedded / system-on-chip)
#
CONFIG_I2C_CBUS_GPIO=y
CONFIG_I2C_DESIGNWARE_CORE=m
CONFIG_I2C_DESIGNWARE_PLATFORM=m
CONFIG_I2C_DESIGNWARE_SLAVE=y
CONFIG_I2C_DESIGNWARE_PCI=m
# CONFIG_I2C_DESIGNWARE_BAYTRAIL is not set
CONFIG_I2C_EMEV2=m
CONFIG_I2C_GPIO=m
# CONFIG_I2C_GPIO_FAULT_INJECTOR is not set
CONFIG_I2C_OCORES=y
# CONFIG_I2C_PCA_PLATFORM is not set
# CONFIG_I2C_SIMTEC is not set
CONFIG_I2C_XILINX=m

#
# External I2C/SMBus adapter drivers
#
CONFIG_I2C_PARPORT=m
# CONFIG_I2C_TAOS_EVM is not set

#
# Other I2C/SMBus bus drivers
#
# CONFIG_I2C_MLXCPLD is not set
# CONFIG_I2C_CROS_EC_TUNNEL is not set
# end of I2C Hardware Bus support

CONFIG_I2C_STUB=m
CONFIG_I2C_SLAVE=y
CONFIG_I2C_SLAVE_EEPROM=m
# CONFIG_I2C_DEBUG_CORE is not set
# CONFIG_I2C_DEBUG_ALGO is not set
# CONFIG_I2C_DEBUG_BUS is not set
# end of I2C support

CONFIG_I3C=m
CONFIG_CDNS_I3C_MASTER=m
CONFIG_DW_I3C_MASTER=m
# CONFIG_SPI is not set
CONFIG_SPMI=y
# CONFIG_HSI is not set
# CONFIG_PPS is not set

#
# PTP clock support
#
# CONFIG_PTP_1588_CLOCK is not set

#
# Enable PHYLIB and NETWORK_PHY_TIMESTAMPING to see the additional clocks.
#
# end of PTP clock support

# CONFIG_PINCTRL is not set
CONFIG_GPIOLIB=y
CONFIG_GPIOLIB_FASTPATH_LIMIT=512
CONFIG_GPIO_ACPI=y
CONFIG_GPIOLIB_IRQCHIP=y
CONFIG_DEBUG_GPIO=y
CONFIG_GPIO_SYSFS=y
CONFIG_GPIO_GENERIC=m
CONFIG_GPIO_MAX730X=m

#
# Memory mapped GPIO drivers
#
# CONFIG_GPIO_AMDPT is not set
# CONFIG_GPIO_DWAPB is not set
# CONFIG_GPIO_EXAR is not set
CONFIG_GPIO_GENERIC_PLATFORM=m
CONFIG_GPIO_ICH=m
CONFIG_GPIO_MB86S7X=y
CONFIG_GPIO_MENZ127=m
CONFIG_GPIO_SIOX=m
# CONFIG_GPIO_VX855 is not set
# CONFIG_GPIO_XILINX is not set
CONFIG_GPIO_AMD_FCH=y
# end of Memory mapped GPIO drivers

#
# Port-mapped I/O GPIO drivers
#
CONFIG_GPIO_104_DIO_48E=y
CONFIG_GPIO_104_IDIO_16=m
CONFIG_GPIO_104_IDI_48=m
# CONFIG_GPIO_F7188X is not set
# CONFIG_GPIO_GPIO_MM is not set
# CONFIG_GPIO_IT87 is not set
# CONFIG_GPIO_SCH is not set
# CONFIG_GPIO_SCH311X is not set
# CONFIG_GPIO_WINBOND is not set
# CONFIG_GPIO_WS16C48 is not set
# end of Port-mapped I/O GPIO drivers

#
# I2C GPIO expanders
#
CONFIG_GPIO_ADP5588=m
CONFIG_GPIO_MAX7300=m
CONFIG_GPIO_MAX732X=m
CONFIG_GPIO_PCA953X=y
CONFIG_GPIO_PCA953X_IRQ=y
CONFIG_GPIO_PCF857X=y
CONFIG_GPIO_TPIC2810=m
# end of I2C GPIO expanders

#
# MFD GPIO expanders
#
CONFIG_GPIO_ARIZONA=y
CONFIG_GPIO_BD9571MWV=m
CONFIG_GPIO_DA9052=m
CONFIG_GPIO_DA9055=m
CONFIG_GPIO_JANZ_TTL=y
CONFIG_GPIO_LP873X=m
# CONFIG_GPIO_RC5T583 is not set
# CONFIG_GPIO_TPS65086 is not set
# CONFIG_GPIO_TPS65910 is not set
# CONFIG_GPIO_TQMX86 is not set
# CONFIG_GPIO_TWL4030 is not set
# CONFIG_GPIO_TWL6040 is not set
CONFIG_GPIO_WM831X=m
CONFIG_GPIO_WM8350=m
CONFIG_GPIO_WM8994=m
# end of MFD GPIO expanders

#
# PCI GPIO expanders
#
CONFIG_GPIO_AMD8111=m
# CONFIG_GPIO_BT8XX is not set
CONFIG_GPIO_ML_IOH=y
# CONFIG_GPIO_PCI_IDIO_16 is not set
# CONFIG_GPIO_PCIE_IDIO_24 is not set
CONFIG_GPIO_RDC321X=m
# end of PCI GPIO expanders

CONFIG_GPIO_MOCKUP=y
CONFIG_W1=y
CONFIG_W1_CON=y

#
# 1-wire Bus Masters
#
# CONFIG_W1_MASTER_MATROX is not set
CONFIG_W1_MASTER_DS2482=y
# CONFIG_W1_MASTER_DS1WM is not set
# CONFIG_W1_MASTER_GPIO is not set
# CONFIG_W1_MASTER_SGI is not set
# end of 1-wire Bus Masters

#
# 1-wire Slaves
#
# CONFIG_W1_SLAVE_THERM is not set
CONFIG_W1_SLAVE_SMEM=m
# CONFIG_W1_SLAVE_DS2405 is not set
# CONFIG_W1_SLAVE_DS2408 is not set
# CONFIG_W1_SLAVE_DS2413 is not set
CONFIG_W1_SLAVE_DS2406=m
CONFIG_W1_SLAVE_DS2423=m
CONFIG_W1_SLAVE_DS2805=y
CONFIG_W1_SLAVE_DS2430=m
CONFIG_W1_SLAVE_DS2431=y
CONFIG_W1_SLAVE_DS2433=m
CONFIG_W1_SLAVE_DS2433_CRC=y
CONFIG_W1_SLAVE_DS2438=m
# CONFIG_W1_SLAVE_DS250X is not set
CONFIG_W1_SLAVE_DS2780=m
CONFIG_W1_SLAVE_DS2781=y
# CONFIG_W1_SLAVE_DS28E04 is not set
CONFIG_W1_SLAVE_DS28E17=m
# end of 1-wire Slaves

CONFIG_POWER_AVS=y
CONFIG_QCOM_CPR=m
CONFIG_POWER_RESET=y
# CONFIG_POWER_RESET_RESTART is not set
CONFIG_POWER_SUPPLY=y
# CONFIG_POWER_SUPPLY_DEBUG is not set
# CONFIG_POWER_SUPPLY_HWMON is not set
CONFIG_PDA_POWER=m
CONFIG_WM831X_BACKUP=m
# CONFIG_WM831X_POWER is not set
# CONFIG_WM8350_POWER is not set
# CONFIG_TEST_POWER is not set
CONFIG_BATTERY_88PM860X=m
# CONFIG_CHARGER_ADP5061 is not set
CONFIG_BATTERY_DS2760=y
CONFIG_BATTERY_DS2780=m
CONFIG_BATTERY_DS2781=y
CONFIG_BATTERY_DS2782=y
# CONFIG_BATTERY_SBS is not set
CONFIG_CHARGER_SBS=y
# CONFIG_MANAGER_SBS is not set
CONFIG_BATTERY_BQ27XXX=y
CONFIG_BATTERY_BQ27XXX_I2C=y
# CONFIG_BATTERY_BQ27XXX_HDQ is not set
CONFIG_BATTERY_BQ27XXX_DT_UPDATES_NVM=y
CONFIG_BATTERY_DA9052=y
CONFIG_BATTERY_MAX17040=m
# CONFIG_BATTERY_MAX17042 is not set
CONFIG_BATTERY_MAX1721X=y
CONFIG_CHARGER_88PM860X=m
CONFIG_CHARGER_PCF50633=m
# CONFIG_CHARGER_MAX8903 is not set
CONFIG_CHARGER_LP8727=m
CONFIG_CHARGER_GPIO=y
CONFIG_CHARGER_MANAGER=m
CONFIG_CHARGER_LT3651=m
CONFIG_CHARGER_MAX14577=m
CONFIG_CHARGER_MAX77693=m
# CONFIG_CHARGER_BQ2415X is not set
CONFIG_CHARGER_BQ24190=m
# CONFIG_CHARGER_BQ24257 is not set
CONFIG_CHARGER_BQ24735=m
CONFIG_CHARGER_BQ25890=m
CONFIG_CHARGER_SMB347=y
# CONFIG_BATTERY_GAUGE_LTC2941 is not set
CONFIG_BATTERY_GOLDFISH=y
CONFIG_CHARGER_RT9455=m
CONFIG_HWMON=y
CONFIG_HWMON_VID=y
# CONFIG_HWMON_DEBUG_CHIP is not set

#
# Native drivers
#
# CONFIG_SENSORS_AD7414 is not set
# CONFIG_SENSORS_AD7418 is not set
CONFIG_SENSORS_ADM1021=m
CONFIG_SENSORS_ADM1025=m
# CONFIG_SENSORS_ADM1026 is not set
CONFIG_SENSORS_ADM1029=y
# CONFIG_SENSORS_ADM1031 is not set
# CONFIG_SENSORS_ADM1177 is not set
# CONFIG_SENSORS_ADM9240 is not set
CONFIG_SENSORS_ADT7X10=y
CONFIG_SENSORS_ADT7410=y
CONFIG_SENSORS_ADT7411=y
CONFIG_SENSORS_ADT7462=y
CONFIG_SENSORS_ADT7470=y
# CONFIG_SENSORS_ADT7475 is not set
# CONFIG_SENSORS_AS370 is not set
CONFIG_SENSORS_ASC7621=m
CONFIG_SENSORS_AXI_FAN_CONTROL=m
# CONFIG_SENSORS_K8TEMP is not set
CONFIG_SENSORS_K10TEMP=y
CONFIG_SENSORS_FAM15H_POWER=y
# CONFIG_SENSORS_APPLESMC is not set
CONFIG_SENSORS_ASB100=y
CONFIG_SENSORS_ASPEED=y
CONFIG_SENSORS_ATXP1=m
CONFIG_SENSORS_DS620=m
CONFIG_SENSORS_DS1621=m
CONFIG_SENSORS_DELL_SMM=y
CONFIG_SENSORS_DA9052_ADC=y
# CONFIG_SENSORS_DA9055 is not set
CONFIG_SENSORS_I5K_AMB=m
CONFIG_SENSORS_F71805F=m
# CONFIG_SENSORS_F71882FG is not set
CONFIG_SENSORS_F75375S=y
CONFIG_SENSORS_FSCHMD=m
CONFIG_SENSORS_FTSTEUTATES=m
CONFIG_SENSORS_GL518SM=y
CONFIG_SENSORS_GL520SM=m
CONFIG_SENSORS_G760A=y
CONFIG_SENSORS_G762=m
# CONFIG_SENSORS_HIH6130 is not set
# CONFIG_SENSORS_IBMAEM is not set
# CONFIG_SENSORS_IBMPEX is not set
CONFIG_SENSORS_I5500=m
# CONFIG_SENSORS_CORETEMP is not set
# CONFIG_SENSORS_IT87 is not set
CONFIG_SENSORS_JC42=y
# CONFIG_SENSORS_POWR1220 is not set
CONFIG_SENSORS_LINEAGE=m
CONFIG_SENSORS_LTC2945=y
CONFIG_SENSORS_LTC2947=y
CONFIG_SENSORS_LTC2947_I2C=y
CONFIG_SENSORS_LTC2990=m
# CONFIG_SENSORS_LTC4151 is not set
# CONFIG_SENSORS_LTC4215 is not set
CONFIG_SENSORS_LTC4222=m
CONFIG_SENSORS_LTC4245=y
CONFIG_SENSORS_LTC4260=y
CONFIG_SENSORS_LTC4261=m
CONFIG_SENSORS_MAX16065=m
CONFIG_SENSORS_MAX1619=y
CONFIG_SENSORS_MAX1668=y
CONFIG_SENSORS_MAX197=y
# CONFIG_SENSORS_MAX31730 is not set
CONFIG_SENSORS_MAX6621=m
CONFIG_SENSORS_MAX6639=m
CONFIG_SENSORS_MAX6642=m
CONFIG_SENSORS_MAX6650=m
# CONFIG_SENSORS_MAX6697 is not set
CONFIG_SENSORS_MAX31790=y
CONFIG_SENSORS_MCP3021=m
# CONFIG_SENSORS_MLXREG_FAN is not set
CONFIG_SENSORS_TC654=y
# CONFIG_SENSORS_LM63 is not set
# CONFIG_SENSORS_LM73 is not set
CONFIG_SENSORS_LM75=m
CONFIG_SENSORS_LM77=y
CONFIG_SENSORS_LM78=y
CONFIG_SENSORS_LM80=y
CONFIG_SENSORS_LM83=m
# CONFIG_SENSORS_LM85 is not set
CONFIG_SENSORS_LM87=y
# CONFIG_SENSORS_LM90 is not set
CONFIG_SENSORS_LM92=y
CONFIG_SENSORS_LM93=m
CONFIG_SENSORS_LM95234=y
CONFIG_SENSORS_LM95241=m
CONFIG_SENSORS_LM95245=m
CONFIG_SENSORS_PC87360=y
# CONFIG_SENSORS_PC87427 is not set
# CONFIG_SENSORS_NTC_THERMISTOR is not set
CONFIG_SENSORS_NCT6683=m
# CONFIG_SENSORS_NCT6775 is not set
# CONFIG_SENSORS_NCT7802 is not set
# CONFIG_SENSORS_NCT7904 is not set
CONFIG_SENSORS_NPCM7XX=m
CONFIG_SENSORS_PCF8591=y
CONFIG_PMBUS=m
CONFIG_SENSORS_PMBUS=m
CONFIG_SENSORS_ADM1275=m
# CONFIG_SENSORS_BEL_PFE is not set
CONFIG_SENSORS_IBM_CFFPS=m
CONFIG_SENSORS_INSPUR_IPSPS=m
CONFIG_SENSORS_IR35221=m
CONFIG_SENSORS_IR38064=m
# CONFIG_SENSORS_IRPS5401 is not set
CONFIG_SENSORS_ISL68137=m
# CONFIG_SENSORS_LM25066 is not set
# CONFIG_SENSORS_LTC2978 is not set
# CONFIG_SENSORS_LTC3815 is not set
CONFIG_SENSORS_MAX16064=m
CONFIG_SENSORS_MAX20730=m
CONFIG_SENSORS_MAX20751=m
# CONFIG_SENSORS_MAX31785 is not set
CONFIG_SENSORS_MAX34440=m
CONFIG_SENSORS_MAX8688=m
CONFIG_SENSORS_PXE1610=m
# CONFIG_SENSORS_TPS40422 is not set
CONFIG_SENSORS_TPS53679=m
CONFIG_SENSORS_UCD9000=m
CONFIG_SENSORS_UCD9200=m
CONFIG_SENSORS_XDPE122=m
# CONFIG_SENSORS_ZL6100 is not set
# CONFIG_SENSORS_SHT15 is not set
CONFIG_SENSORS_SHT21=y
# CONFIG_SENSORS_SHT3x is not set
CONFIG_SENSORS_SHTC1=y
CONFIG_SENSORS_SIS5595=m
CONFIG_SENSORS_DME1737=m
CONFIG_SENSORS_EMC1403=y
CONFIG_SENSORS_EMC2103=m
CONFIG_SENSORS_EMC6W201=m
CONFIG_SENSORS_SMSC47M1=y
# CONFIG_SENSORS_SMSC47M192 is not set
CONFIG_SENSORS_SMSC47B397=m
CONFIG_SENSORS_SCH56XX_COMMON=m
CONFIG_SENSORS_SCH5627=m
CONFIG_SENSORS_SCH5636=m
CONFIG_SENSORS_STTS751=m
# CONFIG_SENSORS_SMM665 is not set
CONFIG_SENSORS_ADC128D818=y
# CONFIG_SENSORS_ADS7828 is not set
CONFIG_SENSORS_AMC6821=m
# CONFIG_SENSORS_INA209 is not set
# CONFIG_SENSORS_INA2XX is not set
CONFIG_SENSORS_INA3221=m
CONFIG_SENSORS_TC74=m
CONFIG_SENSORS_THMC50=m
CONFIG_SENSORS_TMP102=y
CONFIG_SENSORS_TMP103=m
# CONFIG_SENSORS_TMP108 is not set
CONFIG_SENSORS_TMP401=y
# CONFIG_SENSORS_TMP421 is not set
CONFIG_SENSORS_TMP513=m
# CONFIG_SENSORS_VIA_CPUTEMP is not set
CONFIG_SENSORS_VIA686A=m
CONFIG_SENSORS_VT1211=y
CONFIG_SENSORS_VT8231=m
CONFIG_SENSORS_W83773G=y
CONFIG_SENSORS_W83781D=m
# CONFIG_SENSORS_W83791D is not set
# CONFIG_SENSORS_W83792D is not set
# CONFIG_SENSORS_W83793 is not set
# CONFIG_SENSORS_W83795 is not set
CONFIG_SENSORS_W83L785TS=m
CONFIG_SENSORS_W83L786NG=y
CONFIG_SENSORS_W83627HF=y
CONFIG_SENSORS_W83627EHF=y
CONFIG_SENSORS_WM831X=m
# CONFIG_SENSORS_WM8350 is not set

#
# ACPI drivers
#
# CONFIG_SENSORS_ACPI_POWER is not set
# CONFIG_SENSORS_ATK0110 is not set
CONFIG_THERMAL=y
CONFIG_THERMAL_STATISTICS=y
CONFIG_THERMAL_EMERGENCY_POWEROFF_DELAY_MS=0
# CONFIG_THERMAL_HWMON is not set
# CONFIG_THERMAL_WRITABLE_TRIPS is not set
# CONFIG_THERMAL_DEFAULT_GOV_STEP_WISE is not set
# CONFIG_THERMAL_DEFAULT_GOV_FAIR_SHARE is not set
CONFIG_THERMAL_DEFAULT_GOV_USER_SPACE=y
CONFIG_THERMAL_GOV_FAIR_SHARE=y
CONFIG_THERMAL_GOV_STEP_WISE=y
# CONFIG_THERMAL_GOV_BANG_BANG is not set
CONFIG_THERMAL_GOV_USER_SPACE=y
# CONFIG_THERMAL_GOV_POWER_ALLOCATOR is not set
# CONFIG_CLOCK_THERMAL is not set
CONFIG_DEVFREQ_THERMAL=y
CONFIG_THERMAL_EMULATION=y

#
# Intel thermal drivers
#
CONFIG_INTEL_POWERCLAMP=m
# CONFIG_INTEL_SOC_DTS_THERMAL is not set

#
# ACPI INT340X thermal drivers
#
# CONFIG_INT340X_THERMAL is not set
# end of ACPI INT340X thermal drivers

CONFIG_INTEL_PCH_THERMAL=m
# end of Intel thermal drivers

CONFIG_WATCHDOG=y
CONFIG_WATCHDOG_CORE=y
CONFIG_WATCHDOG_NOWAYOUT=y
# CONFIG_WATCHDOG_HANDLE_BOOT_ENABLED is not set
CONFIG_WATCHDOG_OPEN_TIMEOUT=0
# CONFIG_WATCHDOG_SYSFS is not set

#
# Watchdog Pretimeout Governors
#
CONFIG_WATCHDOG_PRETIMEOUT_GOV=y
CONFIG_WATCHDOG_PRETIMEOUT_GOV_SEL=m
# CONFIG_WATCHDOG_PRETIMEOUT_GOV_NOOP is not set
CONFIG_WATCHDOG_PRETIMEOUT_GOV_PANIC=y
CONFIG_WATCHDOG_PRETIMEOUT_DEFAULT_GOV_PANIC=y

#
# Watchdog Device Drivers
#
CONFIG_SOFT_WATCHDOG=m
CONFIG_SOFT_WATCHDOG_PRETIMEOUT=y
CONFIG_DA9052_WATCHDOG=y
CONFIG_DA9055_WATCHDOG=m
# CONFIG_DA9063_WATCHDOG is not set
CONFIG_DA9062_WATCHDOG=m
CONFIG_MENZ069_WATCHDOG=m
# CONFIG_WDAT_WDT is not set
CONFIG_WM831X_WATCHDOG=y
CONFIG_WM8350_WATCHDOG=y
CONFIG_XILINX_WATCHDOG=m
CONFIG_ZIIRAVE_WATCHDOG=y
CONFIG_MLX_WDT=y
# CONFIG_CADENCE_WATCHDOG is not set
# CONFIG_DW_WATCHDOG is not set
CONFIG_TWL4030_WATCHDOG=y
CONFIG_MAX63XX_WATCHDOG=m
CONFIG_ACQUIRE_WDT=y
CONFIG_ADVANTECH_WDT=y
CONFIG_ALIM1535_WDT=y
CONFIG_ALIM7101_WDT=y
CONFIG_EBC_C384_WDT=y
CONFIG_F71808E_WDT=y
# CONFIG_SP5100_TCO is not set
CONFIG_SBC_FITPC2_WATCHDOG=y
# CONFIG_EUROTECH_WDT is not set
# CONFIG_IB700_WDT is not set
CONFIG_IBMASR=y
CONFIG_WAFER_WDT=y
# CONFIG_I6300ESB_WDT is not set
# CONFIG_IE6XX_WDT is not set
CONFIG_ITCO_WDT=y
# CONFIG_ITCO_VENDOR_SUPPORT is not set
# CONFIG_IT8712F_WDT is not set
# CONFIG_IT87_WDT is not set
CONFIG_HP_WATCHDOG=y
# CONFIG_HPWDT_NMI_DECODING is not set
CONFIG_SC1200_WDT=y
# CONFIG_PC87413_WDT is not set
# CONFIG_NV_TCO is not set
# CONFIG_60XX_WDT is not set
CONFIG_CPU5_WDT=m
CONFIG_SMSC_SCH311X_WDT=y
# CONFIG_SMSC37B787_WDT is not set
CONFIG_TQMX86_WDT=m
# CONFIG_VIA_WDT is not set
# CONFIG_W83627HF_WDT is not set
CONFIG_W83877F_WDT=y
# CONFIG_W83977F_WDT is not set
CONFIG_MACHZ_WDT=m
# CONFIG_SBC_EPX_C3_WATCHDOG is not set
# CONFIG_INTEL_MEI_WDT is not set
# CONFIG_NI903X_WDT is not set
# CONFIG_NIC7018_WDT is not set
CONFIG_MEN_A21_WDT=y
CONFIG_XEN_WDT=m

#
# PCI-based Watchdog Cards
#
CONFIG_PCIPCWATCHDOG=m
# CONFIG_WDTPCI is not set
CONFIG_SSB_POSSIBLE=y
# CONFIG_SSB is not set
CONFIG_BCMA_POSSIBLE=y
CONFIG_BCMA=m
CONFIG_BCMA_HOST_PCI_POSSIBLE=y
# CONFIG_BCMA_HOST_PCI is not set
# CONFIG_BCMA_HOST_SOC is not set
CONFIG_BCMA_DRIVER_PCI=y
CONFIG_BCMA_DRIVER_GMAC_CMN=y
# CONFIG_BCMA_DRIVER_GPIO is not set
CONFIG_BCMA_DEBUG=y

#
# Multifunction device drivers
#
CONFIG_MFD_CORE=y
CONFIG_MFD_AS3711=y
# CONFIG_PMIC_ADP5520 is not set
CONFIG_MFD_AAT2870_CORE=y
# CONFIG_MFD_BCM590XX is not set
CONFIG_MFD_BD9571MWV=m
# CONFIG_MFD_AXP20X_I2C is not set
CONFIG_MFD_CROS_EC_DEV=m
# CONFIG_MFD_MADERA is not set
# CONFIG_PMIC_DA903X is not set
CONFIG_PMIC_DA9052=y
CONFIG_MFD_DA9052_I2C=y
CONFIG_MFD_DA9055=y
CONFIG_MFD_DA9062=y
CONFIG_MFD_DA9063=y
# CONFIG_MFD_DA9150 is not set
# CONFIG_MFD_MC13XXX_I2C is not set
CONFIG_HTC_PASIC3=y
CONFIG_HTC_I2CPLD=y
CONFIG_MFD_INTEL_QUARK_I2C_GPIO=y
CONFIG_LPC_ICH=m
CONFIG_LPC_SCH=y
# CONFIG_INTEL_SOC_PMIC_CHTDC_TI is not set
CONFIG_MFD_INTEL_LPSS=m
# CONFIG_MFD_INTEL_LPSS_ACPI is not set
CONFIG_MFD_INTEL_LPSS_PCI=m
# CONFIG_MFD_INTEL_PMC_BXT is not set
# CONFIG_MFD_IQS62X is not set
CONFIG_MFD_JANZ_CMODIO=y
# CONFIG_MFD_KEMPLD is not set
CONFIG_MFD_88PM800=y
# CONFIG_MFD_88PM805 is not set
CONFIG_MFD_88PM860X=y
CONFIG_MFD_MAX14577=y
CONFIG_MFD_MAX77693=y
# CONFIG_MFD_MAX77843 is not set
# CONFIG_MFD_MAX8907 is not set
# CONFIG_MFD_MAX8925 is not set
# CONFIG_MFD_MAX8997 is not set
# CONFIG_MFD_MAX8998 is not set
# CONFIG_MFD_MT6397 is not set
# CONFIG_MFD_MENF21BMC is not set
# CONFIG_MFD_RETU is not set
CONFIG_MFD_PCF50633=m
# CONFIG_PCF50633_ADC is not set
CONFIG_PCF50633_GPIO=m
CONFIG_MFD_RDC321X=m
# CONFIG_MFD_RT5033 is not set
CONFIG_MFD_RC5T583=y
# CONFIG_MFD_SEC_CORE is not set
# CONFIG_MFD_SI476X_CORE is not set
# CONFIG_MFD_SM501 is not set
# CONFIG_MFD_SKY81452 is not set
CONFIG_MFD_SMSC=y
# CONFIG_ABX500_CORE is not set
# CONFIG_MFD_SYSCON is not set
CONFIG_MFD_TI_AM335X_TSCADC=y
# CONFIG_MFD_LP3943 is not set
CONFIG_MFD_LP8788=y
CONFIG_MFD_TI_LMU=m
# CONFIG_MFD_PALMAS is not set
CONFIG_TPS6105X=m
# CONFIG_TPS65010 is not set
# CONFIG_TPS6507X is not set
CONFIG_MFD_TPS65086=m
# CONFIG_MFD_TPS65090 is not set
CONFIG_MFD_TI_LP873X=m
# CONFIG_MFD_TPS6586X is not set
CONFIG_MFD_TPS65910=y
# CONFIG_MFD_TPS65912_I2C is not set
# CONFIG_MFD_TPS80031 is not set
CONFIG_TWL4030_CORE=y
CONFIG_MFD_TWL4030_AUDIO=y
CONFIG_TWL6040_CORE=y
CONFIG_MFD_WL1273_CORE=m
# CONFIG_MFD_LM3533 is not set
CONFIG_MFD_TQMX86=m
# CONFIG_MFD_VX855 is not set
CONFIG_MFD_ARIZONA=y
CONFIG_MFD_ARIZONA_I2C=m
# CONFIG_MFD_CS47L24 is not set
CONFIG_MFD_WM5102=y
# CONFIG_MFD_WM5110 is not set
CONFIG_MFD_WM8997=y
CONFIG_MFD_WM8998=y
# CONFIG_MFD_WM8400 is not set
CONFIG_MFD_WM831X=y
CONFIG_MFD_WM831X_I2C=y
CONFIG_MFD_WM8350=y
CONFIG_MFD_WM8350_I2C=y
CONFIG_MFD_WM8994=m
# CONFIG_RAVE_SP_CORE is not set
# end of Multifunction device drivers

CONFIG_REGULATOR=y
CONFIG_REGULATOR_DEBUG=y
CONFIG_REGULATOR_FIXED_VOLTAGE=m
# CONFIG_REGULATOR_VIRTUAL_CONSUMER is not set
CONFIG_REGULATOR_USERSPACE_CONSUMER=y
CONFIG_REGULATOR_88PG86X=y
# CONFIG_REGULATOR_88PM800 is not set
# CONFIG_REGULATOR_88PM8607 is not set
CONFIG_REGULATOR_ACT8865=m
# CONFIG_REGULATOR_AD5398 is not set
CONFIG_REGULATOR_AAT2870=m
CONFIG_REGULATOR_AS3711=m
CONFIG_REGULATOR_BD9571MWV=m
CONFIG_REGULATOR_DA9052=y
CONFIG_REGULATOR_DA9055=y
CONFIG_REGULATOR_DA9062=m
# CONFIG_REGULATOR_DA9210 is not set
CONFIG_REGULATOR_DA9211=m
# CONFIG_REGULATOR_FAN53555 is not set
CONFIG_REGULATOR_GPIO=y
CONFIG_REGULATOR_ISL9305=y
CONFIG_REGULATOR_ISL6271A=y
CONFIG_REGULATOR_LM363X=m
# CONFIG_REGULATOR_LP3971 is not set
CONFIG_REGULATOR_LP3972=m
CONFIG_REGULATOR_LP872X=y
# CONFIG_REGULATOR_LP8755 is not set
CONFIG_REGULATOR_LP8788=y
CONFIG_REGULATOR_LTC3589=y
# CONFIG_REGULATOR_LTC3676 is not set
# CONFIG_REGULATOR_MAX14577 is not set
CONFIG_REGULATOR_MAX1586=m
# CONFIG_REGULATOR_MAX8649 is not set
# CONFIG_REGULATOR_MAX8660 is not set
# CONFIG_REGULATOR_MAX8952 is not set
# CONFIG_REGULATOR_MAX77693 is not set
# CONFIG_REGULATOR_MAX77826 is not set
CONFIG_REGULATOR_MP8859=m
# CONFIG_REGULATOR_MT6311 is not set
CONFIG_REGULATOR_PCF50633=m
CONFIG_REGULATOR_PFUZE100=m
CONFIG_REGULATOR_PV88060=y
CONFIG_REGULATOR_PV88080=y
# CONFIG_REGULATOR_PV88090 is not set
CONFIG_REGULATOR_PWM=y
CONFIG_REGULATOR_QCOM_SPMI=y
CONFIG_REGULATOR_RC5T583=y
CONFIG_REGULATOR_SLG51000=m
CONFIG_REGULATOR_TPS51632=m
# CONFIG_REGULATOR_TPS6105X is not set
# CONFIG_REGULATOR_TPS62360 is not set
# CONFIG_REGULATOR_TPS65023 is not set
# CONFIG_REGULATOR_TPS6507X is not set
# CONFIG_REGULATOR_TPS65086 is not set
# CONFIG_REGULATOR_TPS65132 is not set
CONFIG_REGULATOR_TPS65910=m
CONFIG_REGULATOR_TWL4030=m
# CONFIG_REGULATOR_WM831X is not set
CONFIG_REGULATOR_WM8350=y
CONFIG_REGULATOR_WM8994=m
CONFIG_RC_CORE=m
CONFIG_RC_MAP=m
CONFIG_LIRC=y
CONFIG_RC_DECODERS=y
# CONFIG_IR_NEC_DECODER is not set
CONFIG_IR_RC5_DECODER=m
CONFIG_IR_RC6_DECODER=m
CONFIG_IR_JVC_DECODER=m
# CONFIG_IR_SONY_DECODER is not set
CONFIG_IR_SANYO_DECODER=m
CONFIG_IR_SHARP_DECODER=m
CONFIG_IR_MCE_KBD_DECODER=m
CONFIG_IR_XMP_DECODER=m
CONFIG_IR_IMON_DECODER=m
# CONFIG_IR_RCMM_DECODER is not set
CONFIG_RC_DEVICES=y
# CONFIG_RC_ATI_REMOTE is not set
# CONFIG_IR_ENE is not set
# CONFIG_IR_IMON is not set
# CONFIG_IR_IMON_RAW is not set
# CONFIG_IR_MCEUSB is not set
# CONFIG_IR_ITE_CIR is not set
# CONFIG_IR_FINTEK is not set
# CONFIG_IR_NUVOTON is not set
# CONFIG_IR_REDRAT3 is not set
# CONFIG_IR_STREAMZAP is not set
# CONFIG_IR_WINBOND_CIR is not set
# CONFIG_IR_IGORPLUGUSB is not set
# CONFIG_IR_IGUANA is not set
# CONFIG_IR_TTUSBIR is not set
CONFIG_RC_LOOPBACK=m
# CONFIG_IR_SERIAL is not set
# CONFIG_IR_SIR is not set
# CONFIG_RC_XBOX_DVD is not set
CONFIG_CEC_CORE=y
CONFIG_CEC_NOTIFIER=y
CONFIG_CEC_PIN=y
# CONFIG_CEC_PIN_ERROR_INJ is not set
CONFIG_MEDIA_CEC_SUPPORT=y
# CONFIG_CEC_CROS_EC is not set
CONFIG_CEC_GPIO=m
# CONFIG_USB_PULSE8_CEC is not set
# CONFIG_USB_RAINSHADOW_CEC is not set
CONFIG_MEDIA_SUPPORT=m
# CONFIG_MEDIA_SUPPORT_FILTER is not set
CONFIG_MEDIA_SUBDRV_AUTOSELECT=y

#
# Media device types
#
CONFIG_MEDIA_CAMERA_SUPPORT=y
CONFIG_MEDIA_ANALOG_TV_SUPPORT=y
CONFIG_MEDIA_DIGITAL_TV_SUPPORT=y
CONFIG_MEDIA_RADIO_SUPPORT=y
CONFIG_MEDIA_SDR_SUPPORT=y
CONFIG_MEDIA_PLATFORM_SUPPORT=y
CONFIG_MEDIA_TEST_SUPPORT=y
# end of Media device types

#
# Media core support
#
CONFIG_VIDEO_DEV=m
# CONFIG_MEDIA_CONTROLLER is not set
CONFIG_DVB_CORE=m
# end of Media core support

#
# Video4Linux options
#
CONFIG_VIDEO_V4L2=m
CONFIG_VIDEO_V4L2_I2C=y
CONFIG_VIDEO_ADV_DEBUG=y
# CONFIG_VIDEO_FIXED_MINOR_RANGES is not set
CONFIG_VIDEO_TUNER=m
CONFIG_V4L2_MEM2MEM_DEV=m
CONFIG_V4L2_FWNODE=m
CONFIG_VIDEOBUF_GEN=m
CONFIG_VIDEOBUF_DMA_SG=m
# end of Video4Linux options

#
# Digital TV options
#
# CONFIG_DVB_MMAP is not set
CONFIG_DVB_NET=y
CONFIG_DVB_MAX_ADAPTERS=16
CONFIG_DVB_DYNAMIC_MINORS=y
# CONFIG_DVB_DEMUX_SECTION_LOSS_LOG is not set
# CONFIG_DVB_ULE_DEBUG is not set
# end of Digital TV options

#
# Media drivers
#
CONFIG_MEDIA_PCI_SUPPORT=y

#
# Media capture support
#
CONFIG_VIDEO_TW5864=m
CONFIG_VIDEO_TW68=m

#
# Media capture/analog TV support
#
# CONFIG_VIDEO_IVTV is not set
CONFIG_VIDEO_HEXIUM_GEMINI=m
CONFIG_VIDEO_HEXIUM_ORION=m
CONFIG_VIDEO_MXB=m
CONFIG_VIDEO_DT3155=m

#
# Media capture/analog/hybrid TV support
#
# CONFIG_VIDEO_CX18 is not set
# CONFIG_VIDEO_CX25821 is not set
# CONFIG_VIDEO_CX88 is not set
# CONFIG_VIDEO_BT848 is not set
CONFIG_VIDEO_SAA7134=m
CONFIG_VIDEO_SAA7134_RC=y
# CONFIG_VIDEO_SAA7134_DVB is not set
# CONFIG_VIDEO_SAA7164 is not set

#
# Media digital TV PCI Adapters
#
# CONFIG_DVB_AV7110 is not set
# CONFIG_DVB_BUDGET_CORE is not set
# CONFIG_DVB_B2C2_FLEXCOP_PCI is not set
# CONFIG_DVB_PLUTO2 is not set
# CONFIG_DVB_DM1105 is not set
# CONFIG_DVB_PT1 is not set
# CONFIG_DVB_PT3 is not set
# CONFIG_MANTIS_CORE is not set
# CONFIG_DVB_NGENE is not set
# CONFIG_DVB_DDBRIDGE is not set
# CONFIG_DVB_SMIPCIE is not set
# CONFIG_VIDEO_IPU3_CIO2 is not set
CONFIG_RADIO_ADAPTERS=y
# CONFIG_RADIO_SI470X is not set
# CONFIG_RADIO_SI4713 is not set
# CONFIG_RADIO_MAXIRADIO is not set
# CONFIG_RADIO_TEA5764 is not set
# CONFIG_RADIO_SAA7706H is not set
# CONFIG_RADIO_TEF6862 is not set
# CONFIG_RADIO_WL1273 is not set
CONFIG_VIDEO_TVEEPROM=m
CONFIG_VIDEOBUF2_CORE=m
CONFIG_VIDEOBUF2_V4L2=m
CONFIG_VIDEOBUF2_MEMOPS=m
CONFIG_VIDEOBUF2_DMA_CONTIG=m
CONFIG_VIDEOBUF2_VMALLOC=m
CONFIG_VIDEOBUF2_DMA_SG=m
CONFIG_VIDEO_SAA7146=m
CONFIG_VIDEO_SAA7146_VV=m
CONFIG_V4L_PLATFORM_DRIVERS=y
CONFIG_VIDEO_CAFE_CCIC=m
CONFIG_VIDEO_VIA_CAMERA=m
CONFIG_VIDEO_CADENCE=y
# CONFIG_VIDEO_CADENCE_CSI2RX is not set
# CONFIG_VIDEO_CADENCE_CSI2TX is not set
# CONFIG_VIDEO_ASPEED is not set
CONFIG_V4L_MEM2MEM_DRIVERS=y
CONFIG_VIDEO_MEM2MEM_DEINTERLACE=m
CONFIG_VIDEO_SH_VEU=m
# CONFIG_DVB_PLATFORM_DRIVERS is not set
# CONFIG_SDR_PLATFORM_DRIVERS is not set

#
# MMC/SDIO DVB adapters
#
# CONFIG_SMS_SDIO_DRV is not set
CONFIG_V4L_TEST_DRIVERS=y
# CONFIG_VIDEO_VIMC is not set
# CONFIG_VIDEO_VIVID is not set
# CONFIG_VIDEO_VIM2M is not set
# CONFIG_VIDEO_VICODEC is not set

#
# FireWire (IEEE 1394) Adapters
#
# CONFIG_DVB_FIREDTV is not set
# end of Media drivers

#
# Media ancillary drivers
#
CONFIG_MEDIA_ATTACH=y

#
# IR I2C driver auto-selected by 'Autoselect ancillary drivers'
#
# CONFIG_VIDEO_IR_I2C is not set

#
# Audio decoders, processors and mixers
#
CONFIG_VIDEO_TVAUDIO=m
CONFIG_VIDEO_TDA7432=m
CONFIG_VIDEO_TDA9840=m
CONFIG_VIDEO_TEA6415C=m
CONFIG_VIDEO_TEA6420=m
CONFIG_VIDEO_MSP3400=m
# CONFIG_VIDEO_CS3308 is not set
CONFIG_VIDEO_CS5345=m
CONFIG_VIDEO_CS53L32A=m
CONFIG_VIDEO_TLV320AIC23B=m
CONFIG_VIDEO_UDA1342=m
CONFIG_VIDEO_WM8775=m
CONFIG_VIDEO_WM8739=m
CONFIG_VIDEO_VP27SMPX=m
CONFIG_VIDEO_SONY_BTF_MPX=m
# end of Audio decoders, processors and mixers

#
# RDS decoders
#
CONFIG_VIDEO_SAA6588=m
# end of RDS decoders

#
# Video decoders
#
# CONFIG_VIDEO_ADV7180 is not set
# CONFIG_VIDEO_ADV7183 is not set
# CONFIG_VIDEO_ADV7604 is not set
# CONFIG_VIDEO_ADV7842 is not set
CONFIG_VIDEO_BT819=m
# CONFIG_VIDEO_BT856 is not set
CONFIG_VIDEO_BT866=m
CONFIG_VIDEO_KS0127=m
# CONFIG_VIDEO_ML86V7667 is not set
CONFIG_VIDEO_SAA7110=m
CONFIG_VIDEO_SAA711X=m
# CONFIG_VIDEO_TC358743 is not set
# CONFIG_VIDEO_TVP514X is not set
# CONFIG_VIDEO_TVP5150 is not set
# CONFIG_VIDEO_TVP7002 is not set
CONFIG_VIDEO_TW2804=m
CONFIG_VIDEO_TW9903=m
CONFIG_VIDEO_TW9906=m
CONFIG_VIDEO_TW9910=m
# CONFIG_VIDEO_VPX3220 is not set

#
# Video and audio decoders
#
CONFIG_VIDEO_SAA717X=m
CONFIG_VIDEO_CX25840=m
# end of Video decoders

#
# Video encoders
#
CONFIG_VIDEO_SAA7127=m
CONFIG_VIDEO_SAA7185=m
# CONFIG_VIDEO_ADV7170 is not set
# CONFIG_VIDEO_ADV7175 is not set
CONFIG_VIDEO_ADV7343=m
CONFIG_VIDEO_ADV7393=m
# CONFIG_VIDEO_ADV7511 is not set
# CONFIG_VIDEO_AD9389B is not set
# CONFIG_VIDEO_AK881X is not set
CONFIG_VIDEO_THS8200=m
# end of Video encoders

#
# Video improvement chips
#
CONFIG_VIDEO_UPD64031A=m
# CONFIG_VIDEO_UPD64083 is not set
# end of Video improvement chips

#
# Audio/Video compression chips
#
CONFIG_VIDEO_SAA6752HS=m
# end of Audio/Video compression chips

#
# SDR tuner chips
#
CONFIG_SDR_MAX2175=m
# end of SDR tuner chips

#
# Miscellaneous helper chips
#
CONFIG_VIDEO_THS7303=m
CONFIG_VIDEO_M52790=m
CONFIG_VIDEO_I2C=m
# CONFIG_VIDEO_ST_MIPID02 is not set
# end of Miscellaneous helper chips

#
# Camera sensor devices
#
# CONFIG_VIDEO_HI556 is not set
# CONFIG_VIDEO_IMX214 is not set
# CONFIG_VIDEO_IMX219 is not set
# CONFIG_VIDEO_IMX258 is not set
# CONFIG_VIDEO_IMX274 is not set
# CONFIG_VIDEO_IMX290 is not set
# CONFIG_VIDEO_IMX319 is not set
# CONFIG_VIDEO_IMX355 is not set
# CONFIG_VIDEO_OV2640 is not set
CONFIG_VIDEO_OV2659=m
# CONFIG_VIDEO_OV2680 is not set
# CONFIG_VIDEO_OV2685 is not set
# CONFIG_VIDEO_OV5647 is not set
CONFIG_VIDEO_OV6650=m
# CONFIG_VIDEO_OV5670 is not set
# CONFIG_VIDEO_OV5675 is not set
CONFIG_VIDEO_OV5695=m
# CONFIG_VIDEO_OV7251 is not set
CONFIG_VIDEO_OV772X=m
# CONFIG_VIDEO_OV7640 is not set
CONFIG_VIDEO_OV7670=m
CONFIG_VIDEO_OV7740=m
# CONFIG_VIDEO_OV8856 is not set
CONFIG_VIDEO_OV9640=m
# CONFIG_VIDEO_OV9650 is not set
# CONFIG_VIDEO_OV13858 is not set
# CONFIG_VIDEO_VS6624 is not set
# CONFIG_VIDEO_MT9M001 is not set
# CONFIG_VIDEO_MT9M032 is not set
CONFIG_VIDEO_MT9M111=m
# CONFIG_VIDEO_MT9P031 is not set
# CONFIG_VIDEO_MT9T001 is not set
CONFIG_VIDEO_MT9T112=m
# CONFIG_VIDEO_MT9V011 is not set
# CONFIG_VIDEO_MT9V032 is not set
# CONFIG_VIDEO_MT9V111 is not set
CONFIG_VIDEO_SR030PC30=m
# CONFIG_VIDEO_NOON010PC30 is not set
# CONFIG_VIDEO_M5MOLS is not set
# CONFIG_VIDEO_RJ54N1 is not set
# CONFIG_VIDEO_S5K6AA is not set
# CONFIG_VIDEO_S5K6A3 is not set
# CONFIG_VIDEO_S5K4ECGX is not set
# CONFIG_VIDEO_S5K5BAF is not set
# CONFIG_VIDEO_SMIAPP is not set
# CONFIG_VIDEO_ET8EK8 is not set
# end of Camera sensor devices

#
# Lens drivers
#
# CONFIG_VIDEO_AD5820 is not set
# CONFIG_VIDEO_AK7375 is not set
# CONFIG_VIDEO_DW9714 is not set
# CONFIG_VIDEO_DW9807_VCM is not set
# end of Lens drivers

#
# Flash devices
#
# CONFIG_VIDEO_ADP1653 is not set
# CONFIG_VIDEO_LM3560 is not set
# CONFIG_VIDEO_LM3646 is not set
# end of Flash devices

#
# SPI helper chips
#
# end of SPI helper chips

CONFIG_MEDIA_TUNER=m

#
# Customize TV tuners
#
CONFIG_MEDIA_TUNER_SIMPLE=m
CONFIG_MEDIA_TUNER_TDA18250=m
CONFIG_MEDIA_TUNER_TDA8290=m
CONFIG_MEDIA_TUNER_TDA827X=m
CONFIG_MEDIA_TUNER_TDA18271=m
CONFIG_MEDIA_TUNER_TDA9887=m
CONFIG_MEDIA_TUNER_TEA5761=m
CONFIG_MEDIA_TUNER_TEA5767=m
CONFIG_MEDIA_TUNER_MT20XX=m
# CONFIG_MEDIA_TUNER_MT2060 is not set
CONFIG_MEDIA_TUNER_MT2063=m
# CONFIG_MEDIA_TUNER_MT2266 is not set
CONFIG_MEDIA_TUNER_MT2131=m
# CONFIG_MEDIA_TUNER_QT1010 is not set
CONFIG_MEDIA_TUNER_XC2028=m
CONFIG_MEDIA_TUNER_XC5000=m
CONFIG_MEDIA_TUNER_XC4000=m
CONFIG_MEDIA_TUNER_MXL5005S=m
# CONFIG_MEDIA_TUNER_MXL5007T is not set
CONFIG_MEDIA_TUNER_MC44S803=m
CONFIG_MEDIA_TUNER_MAX2165=m
CONFIG_MEDIA_TUNER_TDA18218=m
CONFIG_MEDIA_TUNER_FC0011=m
# CONFIG_MEDIA_TUNER_FC0012 is not set
CONFIG_MEDIA_TUNER_FC0013=m
CONFIG_MEDIA_TUNER_TDA18212=m
CONFIG_MEDIA_TUNER_E4000=m
CONFIG_MEDIA_TUNER_FC2580=m
# CONFIG_MEDIA_TUNER_M88RS6000T is not set
# CONFIG_MEDIA_TUNER_TUA9001 is not set
CONFIG_MEDIA_TUNER_SI2157=m
CONFIG_MEDIA_TUNER_IT913X=m
CONFIG_MEDIA_TUNER_R820T=m
CONFIG_MEDIA_TUNER_MXL301RF=m
CONFIG_MEDIA_TUNER_QM1D1C0042=m
CONFIG_MEDIA_TUNER_QM1D1B0004=m
# end of Customize TV tuners

#
# Customise DVB Frontends
#

#
# Multistandard (satellite) frontends
#
# CONFIG_DVB_STB0899 is not set
# CONFIG_DVB_STB6100 is not set
# CONFIG_DVB_STV090x is not set
# CONFIG_DVB_STV0910 is not set
# CONFIG_DVB_STV6110x is not set
# CONFIG_DVB_STV6111 is not set
# CONFIG_DVB_MXL5XX is not set
# CONFIG_DVB_M88DS3103 is not set

#
# Multistandard (cable + terrestrial) frontends
#
# CONFIG_DVB_DRXK is not set
# CONFIG_DVB_TDA18271C2DD is not set
# CONFIG_DVB_SI2165 is not set
# CONFIG_DVB_MN88472 is not set
# CONFIG_DVB_MN88473 is not set

#
# DVB-S (satellite) frontends
#
# CONFIG_DVB_CX24110 is not set
# CONFIG_DVB_CX24123 is not set
# CONFIG_DVB_MT312 is not set
# CONFIG_DVB_ZL10036 is not set
# CONFIG_DVB_ZL10039 is not set
# CONFIG_DVB_S5H1420 is not set
# CONFIG_DVB_STV0288 is not set
# CONFIG_DVB_STB6000 is not set
# CONFIG_DVB_STV0299 is not set
# CONFIG_DVB_STV6110 is not set
# CONFIG_DVB_STV0900 is not set
# CONFIG_DVB_TDA8083 is not set
# CONFIG_DVB_TDA10086 is not set
# CONFIG_DVB_TDA8261 is not set
# CONFIG_DVB_VES1X93 is not set
# CONFIG_DVB_TUNER_ITD1000 is not set
# CONFIG_DVB_TUNER_CX24113 is not set
# CONFIG_DVB_TDA826X is not set
# CONFIG_DVB_TUA6100 is not set
# CONFIG_DVB_CX24116 is not set
# CONFIG_DVB_CX24117 is not set
# CONFIG_DVB_CX24120 is not set
# CONFIG_DVB_SI21XX is not set
# CONFIG_DVB_TS2020 is not set
# CONFIG_DVB_DS3000 is not set
# CONFIG_DVB_MB86A16 is not set
# CONFIG_DVB_TDA10071 is not set

#
# DVB-T (terrestrial) frontends
#
# CONFIG_DVB_SP8870 is not set
# CONFIG_DVB_SP887X is not set
# CONFIG_DVB_CX22700 is not set
# CONFIG_DVB_CX22702 is not set
# CONFIG_DVB_S5H1432 is not set
# CONFIG_DVB_DRXD is not set
# CONFIG_DVB_L64781 is not set
# CONFIG_DVB_TDA1004X is not set
# CONFIG_DVB_NXT6000 is not set
# CONFIG_DVB_MT352 is not set
# CONFIG_DVB_ZL10353 is not set
# CONFIG_DVB_DIB3000MB is not set
# CONFIG_DVB_DIB3000MC is not set
# CONFIG_DVB_DIB7000M is not set
# CONFIG_DVB_DIB7000P is not set
# CONFIG_DVB_DIB9000 is not set
# CONFIG_DVB_TDA10048 is not set
# CONFIG_DVB_AF9013 is not set
# CONFIG_DVB_EC100 is not set
# CONFIG_DVB_STV0367 is not set
# CONFIG_DVB_CXD2820R is not set
# CONFIG_DVB_CXD2841ER is not set
# CONFIG_DVB_RTL2830 is not set
# CONFIG_DVB_RTL2832 is not set
# CONFIG_DVB_SI2168 is not set
# CONFIG_DVB_ZD1301_DEMOD is not set

#
# DVB-C (cable) frontends
#
# CONFIG_DVB_VES1820 is not set
# CONFIG_DVB_TDA10021 is not set
# CONFIG_DVB_TDA10023 is not set
# CONFIG_DVB_STV0297 is not set

#
# ATSC (North American/Korean Terrestrial/Cable DTV) frontends
#
# CONFIG_DVB_NXT200X is not set
# CONFIG_DVB_OR51211 is not set
# CONFIG_DVB_OR51132 is not set
# CONFIG_DVB_BCM3510 is not set
# CONFIG_DVB_LGDT330X is not set
# CONFIG_DVB_LGDT3305 is not set
# CONFIG_DVB_LGDT3306A is not set
# CONFIG_DVB_LG2160 is not set
# CONFIG_DVB_S5H1409 is not set
# CONFIG_DVB_AU8522_DTV is not set
# CONFIG_DVB_AU8522_V4L is not set
# CONFIG_DVB_S5H1411 is not set

#
# ISDB-T (terrestrial) frontends
#
# CONFIG_DVB_S921 is not set
# CONFIG_DVB_DIB8000 is not set
# CONFIG_DVB_MB86A20S is not set

#
# ISDB-S (satellite) & ISDB-T (terrestrial) frontends
#
# CONFIG_DVB_TC90522 is not set
# CONFIG_DVB_MN88443X is not set

#
# Digital terrestrial only tuners/PLL
#
# CONFIG_DVB_PLL is not set
# CONFIG_DVB_TUNER_DIB0070 is not set
# CONFIG_DVB_TUNER_DIB0090 is not set

#
# SEC control devices for DVB-S
#
# CONFIG_DVB_DRX39XYJ is not set
# CONFIG_DVB_LNBH25 is not set
# CONFIG_DVB_LNBH29 is not set
# CONFIG_DVB_LNBP21 is not set
# CONFIG_DVB_LNBP22 is not set
# CONFIG_DVB_ISL6405 is not set
# CONFIG_DVB_ISL6421 is not set
# CONFIG_DVB_ISL6423 is not set
# CONFIG_DVB_A8293 is not set
# CONFIG_DVB_LGS8GL5 is not set
# CONFIG_DVB_LGS8GXX is not set
# CONFIG_DVB_ATBM8830 is not set
# CONFIG_DVB_TDA665x is not set
# CONFIG_DVB_IX2505V is not set
# CONFIG_DVB_M88RS2000 is not set
# CONFIG_DVB_AF9033 is not set
# CONFIG_DVB_HORUS3A is not set
# CONFIG_DVB_ASCOT2E is not set
# CONFIG_DVB_HELENE is not set

#
# Common Interface (EN50221) controller drivers
#
# CONFIG_DVB_CXD2099 is not set
# CONFIG_DVB_SP2 is not set
# end of Customise DVB Frontends

#
# Tools to develop new frontends
#
# CONFIG_DVB_DUMMY_FE is not set
# end of Media ancillary drivers

#
# Graphics support
#
CONFIG_AGP=y
CONFIG_AGP_AMD64=y
# CONFIG_AGP_INTEL is not set
# CONFIG_AGP_SIS is not set
CONFIG_AGP_VIA=y
CONFIG_INTEL_GTT=y
# CONFIG_VGA_ARB is not set
# CONFIG_VGA_SWITCHEROO is not set
CONFIG_DRM=y
CONFIG_DRM_MIPI_DSI=y
CONFIG_DRM_DP_AUX_CHARDEV=y
CONFIG_DRM_DEBUG_MM=y
CONFIG_DRM_DEBUG_SELFTEST=y
CONFIG_DRM_KMS_HELPER=y
# CONFIG_DRM_DEBUG_DP_MST_TOPOLOGY_REFS is not set
# CONFIG_DRM_FBDEV_EMULATION is not set
CONFIG_DRM_LOAD_EDID_FIRMWARE=y
CONFIG_DRM_DP_CEC=y
CONFIG_DRM_TTM=y
CONFIG_DRM_TTM_DMA_PAGE_POOL=y
CONFIG_DRM_VRAM_HELPER=y
CONFIG_DRM_TTM_HELPER=y
CONFIG_DRM_GEM_SHMEM_HELPER=y
CONFIG_DRM_VM=y
CONFIG_DRM_SCHED=m

#
# I2C encoder or helper chips
#
# CONFIG_DRM_I2C_CH7006 is not set
CONFIG_DRM_I2C_SIL164=y
CONFIG_DRM_I2C_NXP_TDA998X=m
# CONFIG_DRM_I2C_NXP_TDA9950 is not set
# end of I2C encoder or helper chips

#
# ARM devices
#
# end of ARM devices

# CONFIG_DRM_RADEON is not set
# CONFIG_DRM_AMDGPU is not set
# CONFIG_DRM_NOUVEAU is not set
CONFIG_DRM_I915=y
CONFIG_DRM_I915_FORCE_PROBE=""
# CONFIG_DRM_I915_CAPTURE_ERROR is not set
# CONFIG_DRM_I915_USERPTR is not set
CONFIG_DRM_I915_GVT=y

#
# drm/i915 Debugging
#
# CONFIG_DRM_I915_WERROR is not set
CONFIG_DRM_I915_DEBUG=y
CONFIG_DRM_I915_DEBUG_MMIO=y
CONFIG_DRM_I915_SW_FENCE_DEBUG_OBJECTS=y
CONFIG_DRM_I915_SW_FENCE_CHECK_DAG=y
# CONFIG_DRM_I915_DEBUG_GUC is not set
CONFIG_DRM_I915_SELFTEST=y
CONFIG_DRM_I915_LOW_LEVEL_TRACEPOINTS=y
# CONFIG_DRM_I915_DEBUG_VBLANK_EVADE is not set
CONFIG_DRM_I915_DEBUG_RUNTIME_PM=y
# end of drm/i915 Debugging

#
# drm/i915 Profile Guided Optimisation
#
CONFIG_DRM_I915_USERFAULT_AUTOSUSPEND=250
CONFIG_DRM_I915_HEARTBEAT_INTERVAL=2500
CONFIG_DRM_I915_PREEMPT_TIMEOUT=640
CONFIG_DRM_I915_MAX_REQUEST_BUSYWAIT=8000
CONFIG_DRM_I915_STOP_TIMEOUT=100
CONFIG_DRM_I915_TIMESLICE_DURATION=1
# end of drm/i915 Profile Guided Optimisation

CONFIG_DRM_VGEM=y
CONFIG_DRM_VKMS=m
# CONFIG_DRM_VMWGFX is not set
# CONFIG_DRM_GMA500 is not set
# CONFIG_DRM_AST is not set
CONFIG_DRM_MGAG200=m
CONFIG_DRM_QXL=m
# CONFIG_DRM_BOCHS is not set
CONFIG_DRM_VIRTIO_GPU=m
CONFIG_DRM_PANEL=y

#
# Display Panels
#
CONFIG_DRM_PANEL_RASPBERRYPI_TOUCHSCREEN=y
# end of Display Panels

CONFIG_DRM_BRIDGE=y
CONFIG_DRM_PANEL_BRIDGE=y

#
# Display Interface Bridges
#
CONFIG_DRM_ANALOGIX_ANX78XX=m
CONFIG_DRM_ANALOGIX_DP=m
# end of Display Interface Bridges

CONFIG_DRM_ETNAVIV=m
CONFIG_DRM_ETNAVIV_THERMAL=y
CONFIG_DRM_CIRRUS_QEMU=m
CONFIG_DRM_XEN=y
# CONFIG_DRM_XEN_FRONTEND is not set
CONFIG_DRM_VBOXVIDEO=y
CONFIG_DRM_LEGACY=y
# CONFIG_DRM_TDFX is not set
# CONFIG_DRM_R128 is not set
CONFIG_DRM_MGA=m
CONFIG_DRM_SIS=y
CONFIG_DRM_VIA=m
CONFIG_DRM_SAVAGE=y
CONFIG_DRM_EXPORT_FOR_TESTS=y
CONFIG_DRM_PANEL_ORIENTATION_QUIRKS=y
CONFIG_DRM_LIB_RANDOM=y

#
# Frame buffer Devices
#
CONFIG_FB_CMDLINE=y
CONFIG_FB_NOTIFY=y
CONFIG_FB=m
# CONFIG_FIRMWARE_EDID is not set
CONFIG_FB_DDC=m
CONFIG_FB_CFB_FILLRECT=m
CONFIG_FB_CFB_COPYAREA=m
CONFIG_FB_CFB_IMAGEBLIT=m
CONFIG_FB_SYS_FILLRECT=m
CONFIG_FB_SYS_COPYAREA=m
CONFIG_FB_SYS_IMAGEBLIT=m
# CONFIG_FB_FOREIGN_ENDIAN is not set
CONFIG_FB_SYS_FOPS=m
CONFIG_FB_DEFERRED_IO=y
CONFIG_FB_HECUBA=m
CONFIG_FB_SVGALIB=m
CONFIG_FB_BACKLIGHT=m
CONFIG_FB_MODE_HELPERS=y
CONFIG_FB_TILEBLITTING=y

#
# Frame buffer hardware drivers
#
CONFIG_FB_CIRRUS=m
# CONFIG_FB_PM2 is not set
CONFIG_FB_CYBER2000=m
CONFIG_FB_CYBER2000_DDC=y
CONFIG_FB_ARC=m
# CONFIG_FB_VGA16 is not set
CONFIG_FB_UVESA=m
CONFIG_FB_N411=m
# CONFIG_FB_HGA is not set
CONFIG_FB_OPENCORES=m
CONFIG_FB_S1D13XXX=m
CONFIG_FB_NVIDIA=m
# CONFIG_FB_NVIDIA_I2C is not set
CONFIG_FB_NVIDIA_DEBUG=y
CONFIG_FB_NVIDIA_BACKLIGHT=y
# CONFIG_FB_RIVA is not set
# CONFIG_FB_I740 is not set
CONFIG_FB_LE80578=m
CONFIG_FB_CARILLO_RANCH=m
# CONFIG_FB_MATROX is not set
CONFIG_FB_RADEON=m
# CONFIG_FB_RADEON_I2C is not set
CONFIG_FB_RADEON_BACKLIGHT=y
# CONFIG_FB_RADEON_DEBUG is not set
CONFIG_FB_ATY128=m
# CONFIG_FB_ATY128_BACKLIGHT is not set
CONFIG_FB_ATY=m
CONFIG_FB_ATY_CT=y
CONFIG_FB_ATY_GENERIC_LCD=y
# CONFIG_FB_ATY_GX is not set
CONFIG_FB_ATY_BACKLIGHT=y
CONFIG_FB_S3=m
# CONFIG_FB_S3_DDC is not set
CONFIG_FB_SAVAGE=m
CONFIG_FB_SAVAGE_I2C=y
# CONFIG_FB_SAVAGE_ACCEL is not set
# CONFIG_FB_SIS is not set
CONFIG_FB_VIA=m
# CONFIG_FB_VIA_DIRECT_PROCFS is not set
CONFIG_FB_VIA_X_COMPATIBILITY=y
# CONFIG_FB_NEOMAGIC is not set
CONFIG_FB_KYRO=m
# CONFIG_FB_3DFX is not set
CONFIG_FB_VOODOO1=m
CONFIG_FB_VT8623=m
CONFIG_FB_TRIDENT=m
CONFIG_FB_ARK=m
CONFIG_FB_PM3=m
CONFIG_FB_CARMINE=m
CONFIG_FB_CARMINE_DRAM_EVAL=y
# CONFIG_CARMINE_DRAM_CUSTOM is not set
CONFIG_FB_IBM_GXT4500=m
# CONFIG_FB_GOLDFISH is not set
CONFIG_FB_VIRTUAL=m
CONFIG_XEN_FBDEV_FRONTEND=m
# CONFIG_FB_METRONOME is not set
# CONFIG_FB_MB862XX is not set
CONFIG_FB_SM712=m
# end of Frame buffer Devices

#
# Backlight & LCD device support
#
# CONFIG_LCD_CLASS_DEVICE is not set
CONFIG_BACKLIGHT_CLASS_DEVICE=y
# CONFIG_BACKLIGHT_GENERIC is not set
CONFIG_BACKLIGHT_PWM=y
CONFIG_BACKLIGHT_DA9052=y
# CONFIG_BACKLIGHT_APPLE is not set
# CONFIG_BACKLIGHT_QCOM_WLED is not set
# CONFIG_BACKLIGHT_SAHARA is not set
CONFIG_BACKLIGHT_WM831X=m
CONFIG_BACKLIGHT_ADP8860=m
# CONFIG_BACKLIGHT_ADP8870 is not set
# CONFIG_BACKLIGHT_88PM860X is not set
CONFIG_BACKLIGHT_PCF50633=m
CONFIG_BACKLIGHT_AAT2870=y
CONFIG_BACKLIGHT_LM3630A=y
# CONFIG_BACKLIGHT_LM3639 is not set
# CONFIG_BACKLIGHT_LP855X is not set
# CONFIG_BACKLIGHT_LP8788 is not set
CONFIG_BACKLIGHT_PANDORA=y
# CONFIG_BACKLIGHT_AS3711 is not set
CONFIG_BACKLIGHT_GPIO=m
# CONFIG_BACKLIGHT_LV5207LP is not set
CONFIG_BACKLIGHT_BD6107=y
CONFIG_BACKLIGHT_ARCXCNN=y
# end of Backlight & LCD device support

CONFIG_VGASTATE=m
CONFIG_HDMI=y
CONFIG_LOGO=y
# CONFIG_LOGO_LINUX_MONO is not set
# CONFIG_LOGO_LINUX_VGA16 is not set
# CONFIG_LOGO_LINUX_CLUT224 is not set
# end of Graphics support

CONFIG_SOUND=m
# CONFIG_SND is not set

#
# HID support
#
CONFIG_HID=m
CONFIG_HID_BATTERY_STRENGTH=y
# CONFIG_HIDRAW is not set
CONFIG_UHID=m
# CONFIG_HID_GENERIC is not set

#
# Special HID drivers
#
CONFIG_HID_A4TECH=m
CONFIG_HID_ACRUX=m
CONFIG_HID_ACRUX_FF=y
# CONFIG_HID_APPLE is not set
CONFIG_HID_ASUS=m
CONFIG_HID_AUREAL=m
CONFIG_HID_BELKIN=m
CONFIG_HID_CHERRY=m
CONFIG_HID_CHICONY=m
CONFIG_HID_COUGAR=m
CONFIG_HID_MACALLY=m
CONFIG_HID_CMEDIA=m
# CONFIG_HID_CYPRESS is not set
CONFIG_HID_DRAGONRISE=m
# CONFIG_DRAGONRISE_FF is not set
CONFIG_HID_EMS_FF=m
CONFIG_HID_ELECOM=m
CONFIG_HID_EZKEY=m
CONFIG_HID_GEMBIRD=m
CONFIG_HID_GFRM=m
CONFIG_HID_GLORIOUS=m
# CONFIG_HID_KEYTOUCH is not set
CONFIG_HID_KYE=m
CONFIG_HID_WALTOP=m
CONFIG_HID_VIEWSONIC=m
CONFIG_HID_GYRATION=m
# CONFIG_HID_ICADE is not set
CONFIG_HID_ITE=m
CONFIG_HID_JABRA=m
CONFIG_HID_TWINHAN=m
# CONFIG_HID_KENSINGTON is not set
# CONFIG_HID_LCPOWER is not set
CONFIG_HID_LED=m
# CONFIG_HID_LENOVO is not set
CONFIG_HID_LOGITECH=m
CONFIG_HID_LOGITECH_HIDPP=m
CONFIG_LOGITECH_FF=y
# CONFIG_LOGIRUMBLEPAD2_FF is not set
CONFIG_LOGIG940_FF=y
# CONFIG_LOGIWHEELS_FF is not set
# CONFIG_HID_MAGICMOUSE is not set
# CONFIG_HID_MALTRON is not set
CONFIG_HID_MAYFLASH=m
CONFIG_HID_REDRAGON=m
CONFIG_HID_MICROSOFT=m
CONFIG_HID_MONTEREY=m
CONFIG_HID_MULTITOUCH=m
CONFIG_HID_NTI=m
# CONFIG_HID_ORTEK is not set
CONFIG_HID_PANTHERLORD=m
CONFIG_PANTHERLORD_FF=y
CONFIG_HID_PETALYNX=m
# CONFIG_HID_PICOLCD is not set
# CONFIG_HID_PLANTRONICS is not set
# CONFIG_HID_PRIMAX is not set
CONFIG_HID_SAITEK=m
CONFIG_HID_SAMSUNG=m
CONFIG_HID_SPEEDLINK=m
CONFIG_HID_STEAM=m
CONFIG_HID_STEELSERIES=m
CONFIG_HID_SUNPLUS=m
# CONFIG_HID_RMI is not set
CONFIG_HID_GREENASIA=m
# CONFIG_GREENASIA_FF is not set
CONFIG_HID_SMARTJOYPLUS=m
CONFIG_SMARTJOYPLUS_FF=y
CONFIG_HID_TIVO=m
# CONFIG_HID_TOPSEED is not set
# CONFIG_HID_THINGM is not set
# CONFIG_HID_THRUSTMASTER is not set
CONFIG_HID_UDRAW_PS3=m
CONFIG_HID_WIIMOTE=m
CONFIG_HID_XINMO=m
CONFIG_HID_ZEROPLUS=m
CONFIG_ZEROPLUS_FF=y
CONFIG_HID_ZYDACRON=m
CONFIG_HID_SENSOR_HUB=m
CONFIG_HID_SENSOR_CUSTOM_SENSOR=m
CONFIG_HID_ALPS=m
# end of Special HID drivers

#
# I2C HID support
#
# CONFIG_I2C_HID is not set
# end of I2C HID support

#
# Intel ISH HID support
#
# CONFIG_INTEL_ISH_HID is not set
# end of Intel ISH HID support
# end of HID support

CONFIG_USB_OHCI_LITTLE_ENDIAN=y
CONFIG_USB_SUPPORT=y
# CONFIG_USB_LED_TRIG is not set
# CONFIG_USB_ULPI_BUS is not set
# CONFIG_USB_CONN_GPIO is not set
CONFIG_USB_ARCH_HAS_HCD=y
# CONFIG_USB is not set
CONFIG_USB_PCI=y

#
# USB port drivers
#

#
# USB Physical Layer drivers
#
# CONFIG_NOP_USB_XCEIV is not set
# CONFIG_USB_GPIO_VBUS is not set
# end of USB Physical Layer drivers

# CONFIG_USB_GADGET is not set
# CONFIG_TYPEC is not set
# CONFIG_USB_ROLE_SWITCH is not set
CONFIG_MMC=y
# CONFIG_MMC_BLOCK is not set
# CONFIG_SDIO_UART is not set
CONFIG_MMC_TEST=m

#
# MMC/SD/SDIO Host Controller Drivers
#
CONFIG_MMC_DEBUG=y
CONFIG_MMC_SDHCI=m
CONFIG_MMC_SDHCI_IO_ACCESSORS=y
CONFIG_MMC_SDHCI_PCI=m
CONFIG_MMC_RICOH_MMC=y
# CONFIG_MMC_SDHCI_ACPI is not set
# CONFIG_MMC_SDHCI_PLTFM is not set
CONFIG_MMC_WBSD=m
CONFIG_MMC_ALCOR=m
CONFIG_MMC_TIFM_SD=y
CONFIG_MMC_GOLDFISH=y
# CONFIG_MMC_SDRICOH_CS is not set
CONFIG_MMC_CB710=y
CONFIG_MMC_VIA_SDMMC=y
CONFIG_MMC_USDHI6ROL0=y
CONFIG_MMC_CQHCI=y
CONFIG_MMC_HSQ=m
CONFIG_MMC_TOSHIBA_PCI=m
# CONFIG_MMC_MTK is not set
CONFIG_MEMSTICK=y
CONFIG_MEMSTICK_DEBUG=y

#
# MemoryStick drivers
#
CONFIG_MEMSTICK_UNSAFE_RESUME=y
CONFIG_MSPRO_BLOCK=y
CONFIG_MS_BLOCK=y

#
# MemoryStick Host Controller Drivers
#
CONFIG_MEMSTICK_TIFM_MS=m
CONFIG_MEMSTICK_JMICRON_38X=y
CONFIG_MEMSTICK_R592=m
CONFIG_NEW_LEDS=y
CONFIG_LEDS_CLASS=m
CONFIG_LEDS_CLASS_FLASH=m
CONFIG_LEDS_BRIGHTNESS_HW_CHANGED=y

#
# LED drivers
#
CONFIG_LEDS_88PM860X=m
CONFIG_LEDS_AS3645A=m
# CONFIG_LEDS_LM3530 is not set
CONFIG_LEDS_LM3532=m
CONFIG_LEDS_LM3642=m
# CONFIG_LEDS_LM3601X is not set
CONFIG_LEDS_PCA9532=m
# CONFIG_LEDS_PCA9532_GPIO is not set
CONFIG_LEDS_GPIO=m
CONFIG_LEDS_LP3944=m
CONFIG_LEDS_LP3952=m
CONFIG_LEDS_LP55XX_COMMON=m
# CONFIG_LEDS_LP5521 is not set
# CONFIG_LEDS_LP5523 is not set
# CONFIG_LEDS_LP5562 is not set
CONFIG_LEDS_LP8501=m
CONFIG_LEDS_LP8788=m
# CONFIG_LEDS_PCA955X is not set
CONFIG_LEDS_PCA963X=m
CONFIG_LEDS_WM831X_STATUS=m
# CONFIG_LEDS_WM8350 is not set
CONFIG_LEDS_DA9052=m
# CONFIG_LEDS_PWM is not set
# CONFIG_LEDS_REGULATOR is not set
CONFIG_LEDS_BD2802=m
# CONFIG_LEDS_TCA6507 is not set
# CONFIG_LEDS_TLC591XX is not set
CONFIG_LEDS_LM355x=m

#
# LED driver for blink(1) USB RGB LED is under Special HID drivers (HID_THINGM)
#
CONFIG_LEDS_BLINKM=m
CONFIG_LEDS_MLXREG=m
CONFIG_LEDS_USER=m
# CONFIG_LEDS_NIC78BX is not set
CONFIG_LEDS_TI_LMU_COMMON=m
CONFIG_LEDS_LM36274=m
# CONFIG_LEDS_TPS6105X is not set
# CONFIG_LEDS_SGM3140 is not set

#
# LED Triggers
#
CONFIG_LEDS_TRIGGERS=y
CONFIG_LEDS_TRIGGER_TIMER=y
CONFIG_LEDS_TRIGGER_ONESHOT=m
CONFIG_LEDS_TRIGGER_MTD=y
CONFIG_LEDS_TRIGGER_HEARTBEAT=y
CONFIG_LEDS_TRIGGER_BACKLIGHT=m
CONFIG_LEDS_TRIGGER_CPU=y
CONFIG_LEDS_TRIGGER_ACTIVITY=y
CONFIG_LEDS_TRIGGER_GPIO=y
# CONFIG_LEDS_TRIGGER_DEFAULT_ON is not set

#
# iptables trigger is under Netfilter config (LED target)
#
CONFIG_LEDS_TRIGGER_TRANSIENT=y
# CONFIG_LEDS_TRIGGER_CAMERA is not set
# CONFIG_LEDS_TRIGGER_PANIC is not set
# CONFIG_LEDS_TRIGGER_NETDEV is not set
CONFIG_LEDS_TRIGGER_PATTERN=m
CONFIG_LEDS_TRIGGER_AUDIO=y
CONFIG_ACCESSIBILITY=y
# CONFIG_INFINIBAND is not set
CONFIG_EDAC_ATOMIC_SCRUB=y
CONFIG_EDAC_SUPPORT=y
CONFIG_EDAC=m
CONFIG_EDAC_LEGACY_SYSFS=y
CONFIG_EDAC_DEBUG=y
CONFIG_EDAC_E752X=m
CONFIG_EDAC_I82975X=m
CONFIG_EDAC_I3000=m
CONFIG_EDAC_I3200=m
CONFIG_EDAC_IE31200=m
CONFIG_EDAC_X38=m
CONFIG_EDAC_I5400=m
CONFIG_EDAC_I5000=m
CONFIG_EDAC_I5100=m
CONFIG_EDAC_I7300=m
CONFIG_RTC_LIB=y
CONFIG_RTC_MC146818_LIB=y
# CONFIG_RTC_CLASS is not set
CONFIG_DMADEVICES=y
CONFIG_DMADEVICES_DEBUG=y
# CONFIG_DMADEVICES_VDEBUG is not set

#
# DMA Devices
#
CONFIG_DMA_ENGINE=y
CONFIG_DMA_VIRTUAL_CHANNELS=y
CONFIG_DMA_ACPI=y
CONFIG_ALTERA_MSGDMA=m
CONFIG_INTEL_IDMA64=y
CONFIG_INTEL_IDXD=m
CONFIG_INTEL_IOATDMA=m
CONFIG_INTEL_MIC_X100_DMA=y
CONFIG_PLX_DMA=y
CONFIG_QCOM_HIDMA_MGMT=y
# CONFIG_QCOM_HIDMA is not set
CONFIG_DW_DMAC_CORE=y
# CONFIG_DW_DMAC is not set
CONFIG_DW_DMAC_PCI=y
CONFIG_HSU_DMA=y
CONFIG_SF_PDMA=y

#
# DMA Clients
#
# CONFIG_ASYNC_TX_DMA is not set
# CONFIG_DMATEST is not set
CONFIG_DMA_ENGINE_RAID=y

#
# DMABUF options
#
CONFIG_SYNC_FILE=y
CONFIG_SW_SYNC=y
CONFIG_UDMABUF=y
# CONFIG_DMABUF_MOVE_NOTIFY is not set
CONFIG_DMABUF_SELFTESTS=y
CONFIG_DMABUF_HEAPS=y
# CONFIG_DMABUF_HEAPS_SYSTEM is not set
CONFIG_DMABUF_HEAPS_CMA=y
# end of DMABUF options

CONFIG_DCA=m
# CONFIG_AUXDISPLAY is not set
# CONFIG_PANEL is not set
# CONFIG_UIO is not set
# CONFIG_VIRT_DRIVERS is not set
CONFIG_VIRTIO=m
# CONFIG_VIRTIO_MENU is not set
CONFIG_VDPA=y
CONFIG_VDPA_SIM=m
CONFIG_VHOST_IOTLB=m
CONFIG_VHOST_RING=m
# CONFIG_VHOST_MENU is not set

#
# Microsoft Hyper-V guest support
#
# CONFIG_HYPERV is not set
# end of Microsoft Hyper-V guest support

#
# Xen driver support
#
# CONFIG_XEN_BALLOON is not set
CONFIG_XEN_DEV_EVTCHN=m
CONFIG_XEN_BACKEND=y
CONFIG_XENFS=y
CONFIG_XEN_COMPAT_XENFS=y
CONFIG_XEN_SYS_HYPERVISOR=y
CONFIG_XEN_XENBUS_FRONTEND=y
CONFIG_XEN_GNTDEV=y
CONFIG_XEN_GNTDEV_DMABUF=y
CONFIG_XEN_GRANT_DEV_ALLOC=m
CONFIG_XEN_GRANT_DMA_ALLOC=y
CONFIG_SWIOTLB_XEN=y
# CONFIG_XEN_PCIDEV_BACKEND is not set
# CONFIG_XEN_PVCALLS_FRONTEND is not set
# CONFIG_XEN_PVCALLS_BACKEND is not set
CONFIG_XEN_SCSI_BACKEND=m
CONFIG_XEN_PRIVCMD=y
CONFIG_XEN_EFI=y
CONFIG_XEN_ACPI=y
# end of Xen driver support

# CONFIG_GREYBUS is not set
CONFIG_STAGING=y
CONFIG_COMEDI=y
# CONFIG_COMEDI_DEBUG is not set
CONFIG_COMEDI_DEFAULT_BUF_SIZE_KB=2048
CONFIG_COMEDI_DEFAULT_BUF_MAXSIZE_KB=20480
CONFIG_COMEDI_MISC_DRIVERS=y
CONFIG_COMEDI_BOND=y
CONFIG_COMEDI_TEST=m
CONFIG_COMEDI_PARPORT=y
CONFIG_COMEDI_ISA_DRIVERS=y
# CONFIG_COMEDI_PCL711 is not set
# CONFIG_COMEDI_PCL724 is not set
# CONFIG_COMEDI_PCL726 is not set
CONFIG_COMEDI_PCL730=m
CONFIG_COMEDI_PCL812=y
CONFIG_COMEDI_PCL816=m
CONFIG_COMEDI_PCL818=y
CONFIG_COMEDI_PCM3724=m
CONFIG_COMEDI_AMPLC_DIO200_ISA=m
# CONFIG_COMEDI_AMPLC_PC236_ISA is not set
CONFIG_COMEDI_AMPLC_PC263_ISA=m
# CONFIG_COMEDI_RTI800 is not set
CONFIG_COMEDI_RTI802=m
# CONFIG_COMEDI_DAC02 is not set
# CONFIG_COMEDI_DAS16M1 is not set
CONFIG_COMEDI_DAS08_ISA=m
# CONFIG_COMEDI_DAS16 is not set
CONFIG_COMEDI_DAS800=y
# CONFIG_COMEDI_DAS1800 is not set
# CONFIG_COMEDI_DAS6402 is not set
CONFIG_COMEDI_DT2801=y
CONFIG_COMEDI_DT2811=y
# CONFIG_COMEDI_DT2814 is not set
# CONFIG_COMEDI_DT2815 is not set
# CONFIG_COMEDI_DT2817 is not set
CONFIG_COMEDI_DT282X=m
CONFIG_COMEDI_DMM32AT=m
# CONFIG_COMEDI_FL512 is not set
CONFIG_COMEDI_AIO_AIO12_8=y
# CONFIG_COMEDI_AIO_IIRO_16 is not set
CONFIG_COMEDI_II_PCI20KC=m
# CONFIG_COMEDI_C6XDIGIO is not set
CONFIG_COMEDI_MPC624=m
CONFIG_COMEDI_ADQ12B=m
CONFIG_COMEDI_NI_AT_A2150=y
CONFIG_COMEDI_NI_AT_AO=m
CONFIG_COMEDI_NI_ATMIO=m
CONFIG_COMEDI_NI_ATMIO16D=y
# CONFIG_COMEDI_NI_LABPC_ISA is not set
CONFIG_COMEDI_PCMAD=m
CONFIG_COMEDI_PCMDA12=m
# CONFIG_COMEDI_PCMMIO is not set
CONFIG_COMEDI_PCMUIO=m
CONFIG_COMEDI_MULTIQ3=m
CONFIG_COMEDI_S526=m
# CONFIG_COMEDI_PCI_DRIVERS is not set
# CONFIG_COMEDI_PCMCIA_DRIVERS is not set
CONFIG_COMEDI_8254=y
CONFIG_COMEDI_8255=y
# CONFIG_COMEDI_8255_SA is not set
CONFIG_COMEDI_KCOMEDILIB=y
CONFIG_COMEDI_AMPLC_DIO200=m
CONFIG_COMEDI_DAS08=m
CONFIG_COMEDI_ISADMA=y
CONFIG_COMEDI_NI_TIO=m
CONFIG_COMEDI_NI_ROUTING=m
# CONFIG_RTLLIB is not set
# CONFIG_RTL8723BS is not set
# CONFIG_RTS5208 is not set
CONFIG_FB_SM750=m

#
# Speakup console speech
#
# end of Speakup console speech

CONFIG_STAGING_MEDIA=y
# CONFIG_VIDEO_IPU3_IMGU is not set

#
# soc_camera sensor drivers
#

#
# Android
#
# CONFIG_ASHMEM is not set
CONFIG_ION=y
CONFIG_ION_SYSTEM_HEAP=y
# CONFIG_ION_CMA_HEAP is not set
# end of Android

# CONFIG_FIREWIRE_SERIAL is not set
CONFIG_GOLDFISH_AUDIO=y
CONFIG_GS_FPGABOOT=m
CONFIG_UNISYSSPAR=y
# CONFIG_WILC1000_SDIO is not set
CONFIG_MOST_COMPONENTS=m
CONFIG_MOST_CDEV=m
CONFIG_MOST_NET=m
# CONFIG_MOST_VIDEO is not set
CONFIG_MOST_I2C=m
# CONFIG_KS7010 is not set

#
# Gasket devices
#
CONFIG_STAGING_GASKET_FRAMEWORK=m
CONFIG_STAGING_APEX_DRIVER=m
# end of Gasket devices

CONFIG_FIELDBUS_DEV=y
# CONFIG_QLGE is not set
CONFIG_X86_PLATFORM_DEVICES=y
# CONFIG_ACPI_WMI is not set
# CONFIG_ACERHDF is not set
# CONFIG_ACER_WIRELESS is not set
# CONFIG_APPLE_GMUX is not set
# CONFIG_ASUS_LAPTOP is not set
# CONFIG_ASUS_WIRELESS is not set
# CONFIG_EEEPC_LAPTOP is not set
CONFIG_DCDBAS=y
# CONFIG_DELL_SMBIOS is not set
CONFIG_DELL_RBU=y
# CONFIG_DELL_SMO8800 is not set
# CONFIG_FUJITSU_LAPTOP is not set
# CONFIG_FUJITSU_TABLET is not set
# CONFIG_GPD_POCKET_FAN is not set
# CONFIG_HP_ACCEL is not set
# CONFIG_HP_WIRELESS is not set
# CONFIG_IBM_RTL is not set
CONFIG_SENSORS_HDAPS=y
# CONFIG_THINKPAD_ACPI is not set
CONFIG_INTEL_ATOMISP2_PM=y
# CONFIG_INTEL_HID_EVENT is not set
# CONFIG_INTEL_INT0002_VGPIO is not set
# CONFIG_INTEL_MENLOW is not set
# CONFIG_INTEL_VBTN is not set
# CONFIG_SURFACE_3_BUTTON is not set
# CONFIG_SURFACE_3_POWER_OPREGION is not set
# CONFIG_SURFACE_PRO3_BUTTON is not set
# CONFIG_PCENGINES_APU2 is not set
CONFIG_SAMSUNG_LAPTOP=m
# CONFIG_SAMSUNG_Q10 is not set
# CONFIG_TOSHIBA_BT_RFKILL is not set
# CONFIG_TOSHIBA_HAPS is not set
# CONFIG_ACPI_CMPC is not set
# CONFIG_PANASONIC_LAPTOP is not set
# CONFIG_SYSTEM76_ACPI is not set
# CONFIG_TOPSTAR_LAPTOP is not set
# CONFIG_I2C_MULTI_INSTANTIATE is not set
CONFIG_MLX_PLATFORM=m
# CONFIG_INTEL_IPS is not set
# CONFIG_INTEL_RST is not set
# CONFIG_INTEL_SMARTCONNECT is not set

#
# Intel Speed Select Technology interface support
#
CONFIG_INTEL_SPEED_SELECT_INTERFACE=y
# end of Intel Speed Select Technology interface support

# CONFIG_INTEL_UNCORE_FREQ_CONTROL is not set
CONFIG_INTEL_PMC_CORE=m
# CONFIG_INTEL_PUNIT_IPC is not set
# CONFIG_INTEL_SCU_PCI is not set
CONFIG_PMC_ATOM=y
CONFIG_GOLDFISH_PIPE=m
CONFIG_MFD_CROS_EC=m
CONFIG_CHROME_PLATFORMS=y
CONFIG_CHROMEOS_PSTORE=y
# CONFIG_CHROMEOS_TBMC is not set
CONFIG_CROS_EC=m
# CONFIG_CROS_EC_I2C is not set
# CONFIG_CROS_EC_LPC is not set
CONFIG_CROS_EC_PROTO=y
# CONFIG_CROS_KBD_LED_BACKLIGHT is not set
CONFIG_CROS_EC_CHARDEV=m
CONFIG_CROS_EC_LIGHTBAR=m
# CONFIG_CROS_EC_DEBUGFS is not set
CONFIG_CROS_EC_SENSORHUB=m
CONFIG_CROS_EC_SYSFS=m
# CONFIG_CROS_USBPD_NOTIFY is not set
CONFIG_MELLANOX_PLATFORM=y
# CONFIG_MLXREG_HOTPLUG is not set
CONFIG_MLXREG_IO=m
CONFIG_CLKDEV_LOOKUP=y
CONFIG_HAVE_CLK_PREPARE=y
CONFIG_COMMON_CLK=y

#
# Common Clock Framework
#
# CONFIG_COMMON_CLK_WM831X is not set
CONFIG_COMMON_CLK_MAX9485=m
CONFIG_COMMON_CLK_SI5341=m
# CONFIG_COMMON_CLK_SI5351 is not set
CONFIG_COMMON_CLK_SI544=m
CONFIG_COMMON_CLK_CDCE706=m
# CONFIG_COMMON_CLK_CS2000_CP is not set
CONFIG_CLK_TWL6040=m
CONFIG_COMMON_CLK_PWM=y
# end of Common Clock Framework

# CONFIG_HWSPINLOCK is not set

#
# Clock Source drivers
#
CONFIG_CLKEVT_I8253=y
CONFIG_CLKBLD_I8253=y
# end of Clock Source drivers

CONFIG_MAILBOX=y
# CONFIG_PCC is not set
CONFIG_ALTERA_MBOX=m
CONFIG_IOMMU_IOVA=m
CONFIG_IOMMU_SUPPORT=y

#
# Generic IOMMU Pagetable Support
#
# end of Generic IOMMU Pagetable Support

# CONFIG_IOMMU_DEBUGFS is not set
# CONFIG_AMD_IOMMU is not set

#
# Remoteproc drivers
#
# CONFIG_REMOTEPROC is not set
# end of Remoteproc drivers

#
# Rpmsg drivers
#
CONFIG_RPMSG=m
# CONFIG_RPMSG_CHAR is not set
CONFIG_RPMSG_QCOM_GLINK=m
CONFIG_RPMSG_QCOM_GLINK_RPM=m
# CONFIG_RPMSG_VIRTIO is not set
# end of Rpmsg drivers

# CONFIG_SOUNDWIRE is not set

#
# SOC (System On Chip) specific Drivers
#

#
# Amlogic SoC drivers
#
# end of Amlogic SoC drivers

#
# Aspeed SoC drivers
#
# end of Aspeed SoC drivers

#
# Broadcom SoC drivers
#
# end of Broadcom SoC drivers

#
# NXP/Freescale QorIQ SoC drivers
#
# end of NXP/Freescale QorIQ SoC drivers

#
# i.MX SoC drivers
#
# end of i.MX SoC drivers

#
# Qualcomm SoC drivers
#
# end of Qualcomm SoC drivers

CONFIG_SOC_TI=y

#
# Xilinx SoC drivers
#
CONFIG_XILINX_VCU=y
# end of Xilinx SoC drivers
# end of SOC (System On Chip) specific Drivers

CONFIG_PM_DEVFREQ=y

#
# DEVFREQ Governors
#
CONFIG_DEVFREQ_GOV_SIMPLE_ONDEMAND=m
CONFIG_DEVFREQ_GOV_PERFORMANCE=m
CONFIG_DEVFREQ_GOV_POWERSAVE=y
# CONFIG_DEVFREQ_GOV_USERSPACE is not set
CONFIG_DEVFREQ_GOV_PASSIVE=y

#
# DEVFREQ Drivers
#
CONFIG_PM_DEVFREQ_EVENT=y
CONFIG_EXTCON=y

#
# Extcon Device Drivers
#
CONFIG_EXTCON_FSA9480=y
CONFIG_EXTCON_GPIO=y
# CONFIG_EXTCON_INTEL_INT3496 is not set
CONFIG_EXTCON_MAX14577=y
# CONFIG_EXTCON_MAX3355 is not set
# CONFIG_EXTCON_MAX77693 is not set
CONFIG_EXTCON_PTN5150=m
# CONFIG_EXTCON_RT8973A is not set
CONFIG_EXTCON_SM5502=y
CONFIG_EXTCON_USB_GPIO=m
CONFIG_EXTCON_USBC_CROS_EC=m
CONFIG_MEMORY=y
# CONFIG_IIO is not set
CONFIG_NTB=y
CONFIG_NTB_AMD=y
CONFIG_NTB_IDT=y
CONFIG_NTB_INTEL=m
# CONFIG_NTB_SWITCHTEC is not set
# CONFIG_NTB_PINGPONG is not set
# CONFIG_NTB_TOOL is not set
# CONFIG_NTB_PERF is not set
CONFIG_NTB_TRANSPORT=m
# CONFIG_VME_BUS is not set
CONFIG_PWM=y
CONFIG_PWM_SYSFS=y
CONFIG_PWM_DEBUG=y
CONFIG_PWM_CROS_EC=m
CONFIG_PWM_LPSS=m
CONFIG_PWM_LPSS_PCI=m
# CONFIG_PWM_LPSS_PLATFORM is not set
CONFIG_PWM_PCA9685=y
# CONFIG_PWM_TWL is not set
CONFIG_PWM_TWL_LED=m

#
# IRQ chip support
#
# end of IRQ chip support

CONFIG_IPACK_BUS=y
CONFIG_BOARD_TPCI200=m
# CONFIG_SERIAL_IPOCTAL is not set
# CONFIG_RESET_CONTROLLER is not set

#
# PHY Subsystem
#
CONFIG_GENERIC_PHY=y
CONFIG_BCM_KONA_USB2_PHY=y
CONFIG_PHY_PXA_28NM_HSIC=y
# CONFIG_PHY_PXA_28NM_USB2 is not set
CONFIG_PHY_INTEL_EMMC=y
# end of PHY Subsystem

CONFIG_POWERCAP=y
# CONFIG_INTEL_RAPL is not set
CONFIG_IDLE_INJECT=y
CONFIG_MCB=y
# CONFIG_MCB_PCI is not set
CONFIG_MCB_LPC=m

#
# Performance monitor support
#
# end of Performance monitor support

CONFIG_RAS=y
# CONFIG_USB4 is not set

#
# Android
#
CONFIG_ANDROID=y
# CONFIG_ANDROID_BINDER_IPC is not set
# end of Android

# CONFIG_LIBNVDIMM is not set
# CONFIG_DAX is not set
CONFIG_NVMEM=y
CONFIG_NVMEM_SYSFS=y
CONFIG_NVMEM_SPMI_SDAM=m

#
# HW tracing support
#
CONFIG_STM=y
# CONFIG_STM_PROTO_BASIC is not set
CONFIG_STM_PROTO_SYS_T=y
CONFIG_STM_DUMMY=m
# CONFIG_STM_SOURCE_CONSOLE is not set
# CONFIG_STM_SOURCE_HEARTBEAT is not set
CONFIG_STM_SOURCE_FTRACE=m
CONFIG_INTEL_TH=m
CONFIG_INTEL_TH_PCI=m
# CONFIG_INTEL_TH_ACPI is not set
# CONFIG_INTEL_TH_GTH is not set
# CONFIG_INTEL_TH_STH is not set
# CONFIG_INTEL_TH_MSU is not set
CONFIG_INTEL_TH_PTI=m
# CONFIG_INTEL_TH_DEBUG is not set
# end of HW tracing support

CONFIG_FPGA=m
# CONFIG_ALTERA_PR_IP_CORE is not set
# CONFIG_FPGA_MGR_ALTERA_CVP is not set
CONFIG_FPGA_BRIDGE=m
# CONFIG_ALTERA_FREEZE_BRIDGE is not set
CONFIG_XILINX_PR_DECOUPLER=m
CONFIG_FPGA_REGION=m
CONFIG_FPGA_DFL=m
CONFIG_FPGA_DFL_FME=m
CONFIG_FPGA_DFL_FME_MGR=m
CONFIG_FPGA_DFL_FME_BRIDGE=m
# CONFIG_FPGA_DFL_FME_REGION is not set
CONFIG_FPGA_DFL_AFU=m
CONFIG_FPGA_DFL_PCI=m
CONFIG_TEE=m

#
# TEE drivers
#
# end of TEE drivers

CONFIG_PM_OPP=y
# CONFIG_UNISYS_VISORBUS is not set
CONFIG_SIOX=m
CONFIG_SIOX_BUS_GPIO=m
# CONFIG_SLIMBUS is not set
CONFIG_INTERCONNECT=m
CONFIG_COUNTER=y
CONFIG_MOST=m
# end of Device Drivers

#
# File systems
#
CONFIG_DCACHE_WORD_ACCESS=y
CONFIG_VALIDATE_FS_PARSER=y
CONFIG_FS_IOMAP=y
# CONFIG_EXT2_FS is not set
CONFIG_EXT3_FS=m
# CONFIG_EXT3_FS_POSIX_ACL is not set
# CONFIG_EXT3_FS_SECURITY is not set
CONFIG_EXT4_FS=y
CONFIG_EXT4_USE_FOR_EXT2=y
CONFIG_EXT4_FS_POSIX_ACL=y
CONFIG_EXT4_FS_SECURITY=y
CONFIG_EXT4_DEBUG=y
CONFIG_EXT4_KUNIT_TESTS=y
CONFIG_JBD2=y
# CONFIG_JBD2_DEBUG is not set
CONFIG_FS_MBCACHE=y
# CONFIG_REISERFS_FS is not set
CONFIG_JFS_FS=y
CONFIG_JFS_POSIX_ACL=y
# CONFIG_JFS_SECURITY is not set
# CONFIG_JFS_DEBUG is not set
# CONFIG_JFS_STATISTICS is not set
CONFIG_XFS_FS=m
CONFIG_XFS_QUOTA=y
# CONFIG_XFS_POSIX_ACL is not set
# CONFIG_XFS_RT is not set
CONFIG_XFS_ONLINE_SCRUB=y
# CONFIG_XFS_ONLINE_REPAIR is not set
CONFIG_XFS_WARN=y
# CONFIG_XFS_DEBUG is not set
CONFIG_GFS2_FS=y
CONFIG_OCFS2_FS=m
# CONFIG_OCFS2_FS_O2CB is not set
CONFIG_OCFS2_FS_STATS=y
CONFIG_OCFS2_DEBUG_MASKLOG=y
CONFIG_OCFS2_DEBUG_FS=y
CONFIG_BTRFS_FS=m
# CONFIG_BTRFS_FS_POSIX_ACL is not set
# CONFIG_BTRFS_FS_CHECK_INTEGRITY is not set
# CONFIG_BTRFS_FS_RUN_SANITY_TESTS is not set
# CONFIG_BTRFS_DEBUG is not set
# CONFIG_BTRFS_ASSERT is not set
# CONFIG_BTRFS_FS_REF_VERIFY is not set
CONFIG_NILFS2_FS=m
CONFIG_F2FS_FS=y
CONFIG_F2FS_STAT_FS=y
CONFIG_F2FS_FS_XATTR=y
# CONFIG_F2FS_FS_POSIX_ACL is not set
# CONFIG_F2FS_FS_SECURITY is not set
# CONFIG_F2FS_CHECK_FS is not set
# CONFIG_F2FS_IO_TRACE is not set
# CONFIG_F2FS_FAULT_INJECTION is not set
CONFIG_F2FS_FS_COMPRESSION=y
# CONFIG_F2FS_FS_LZO is not set
# CONFIG_F2FS_FS_LZ4 is not set
# CONFIG_F2FS_FS_ZSTD is not set
CONFIG_ZONEFS_FS=y
# CONFIG_FS_DAX is not set
CONFIG_FS_POSIX_ACL=y
CONFIG_EXPORTFS=y
# CONFIG_EXPORTFS_BLOCK_OPS is not set
CONFIG_FILE_LOCKING=y
CONFIG_MANDATORY_FILE_LOCKING=y
# CONFIG_FS_ENCRYPTION is not set
# CONFIG_FS_VERITY is not set
CONFIG_FSNOTIFY=y
CONFIG_DNOTIFY=y
CONFIG_INOTIFY_USER=y
CONFIG_FANOTIFY=y
CONFIG_QUOTA=y
CONFIG_QUOTA_NETLINK_INTERFACE=y
CONFIG_PRINT_QUOTA_WARNING=y
CONFIG_QUOTA_DEBUG=y
CONFIG_QUOTA_TREE=m
# CONFIG_QFMT_V1 is not set
# CONFIG_QFMT_V2 is not set
CONFIG_QUOTACTL=y
CONFIG_QUOTACTL_COMPAT=y
CONFIG_AUTOFS4_FS=y
CONFIG_AUTOFS_FS=y
CONFIG_FUSE_FS=m
CONFIG_CUSE=m
CONFIG_VIRTIO_FS=m
CONFIG_OVERLAY_FS=m
CONFIG_OVERLAY_FS_REDIRECT_DIR=y
CONFIG_OVERLAY_FS_REDIRECT_ALWAYS_FOLLOW=y
CONFIG_OVERLAY_FS_INDEX=y
# CONFIG_OVERLAY_FS_NFS_EXPORT is not set
# CONFIG_OVERLAY_FS_XINO_AUTO is not set
# CONFIG_OVERLAY_FS_METACOPY is not set

#
# Caches
#
CONFIG_FSCACHE=m
# CONFIG_FSCACHE_STATS is not set
# CONFIG_FSCACHE_HISTOGRAM is not set
# CONFIG_FSCACHE_DEBUG is not set
# CONFIG_FSCACHE_OBJECT_LIST is not set
CONFIG_CACHEFILES=m
# CONFIG_CACHEFILES_DEBUG is not set
# CONFIG_CACHEFILES_HISTOGRAM is not set
# end of Caches

#
# CD-ROM/DVD Filesystems
#
# CONFIG_ISO9660_FS is not set
CONFIG_UDF_FS=m
# end of CD-ROM/DVD Filesystems

#
# DOS/FAT/EXFAT/NT Filesystems
#
CONFIG_FAT_FS=y
CONFIG_MSDOS_FS=y
# CONFIG_VFAT_FS is not set
CONFIG_FAT_DEFAULT_CODEPAGE=437
CONFIG_EXFAT_FS=y
CONFIG_EXFAT_DEFAULT_IOCHARSET="utf8"
CONFIG_NTFS_FS=y
CONFIG_NTFS_DEBUG=y
# CONFIG_NTFS_RW is not set
# end of DOS/FAT/EXFAT/NT Filesystems

#
# Pseudo filesystems
#
CONFIG_PROC_FS=y
# CONFIG_PROC_KCORE is not set
CONFIG_PROC_VMCORE=y
# CONFIG_PROC_VMCORE_DEVICE_DUMP is not set
CONFIG_PROC_SYSCTL=y
CONFIG_PROC_PAGE_MONITOR=y
CONFIG_PROC_CHILDREN=y
CONFIG_PROC_PID_ARCH_STATUS=y
CONFIG_PROC_CPU_RESCTRL=y
CONFIG_KERNFS=y
CONFIG_SYSFS=y
CONFIG_TMPFS=y
CONFIG_TMPFS_POSIX_ACL=y
CONFIG_TMPFS_XATTR=y
CONFIG_HUGETLBFS=y
CONFIG_HUGETLB_PAGE=y
CONFIG_MEMFD_CREATE=y
CONFIG_ARCH_HAS_GIGANTIC_PAGE=y
CONFIG_CONFIGFS_FS=y
CONFIG_EFIVAR_FS=m
# end of Pseudo filesystems

CONFIG_MISC_FILESYSTEMS=y
# CONFIG_ORANGEFS_FS is not set
# CONFIG_ADFS_FS is not set
CONFIG_AFFS_FS=y
# CONFIG_ECRYPT_FS is not set
CONFIG_HFS_FS=y
CONFIG_HFSPLUS_FS=y
CONFIG_BEFS_FS=y
# CONFIG_BEFS_DEBUG is not set
CONFIG_BFS_FS=m
CONFIG_EFS_FS=m
# CONFIG_JFFS2_FS is not set
CONFIG_UBIFS_FS=m
# CONFIG_UBIFS_FS_ADVANCED_COMPR is not set
CONFIG_UBIFS_FS_LZO=y
CONFIG_UBIFS_FS_ZLIB=y
CONFIG_UBIFS_FS_ZSTD=y
# CONFIG_UBIFS_ATIME_SUPPORT is not set
CONFIG_UBIFS_FS_XATTR=y
CONFIG_UBIFS_FS_SECURITY=y
# CONFIG_UBIFS_FS_AUTHENTICATION is not set
# CONFIG_CRAMFS is not set
# CONFIG_SQUASHFS is not set
# CONFIG_VXFS_FS is not set
CONFIG_MINIX_FS=y
CONFIG_OMFS_FS=y
CONFIG_HPFS_FS=m
CONFIG_QNX4FS_FS=y
CONFIG_QNX6FS_FS=m
# CONFIG_QNX6FS_DEBUG is not set
# CONFIG_ROMFS_FS is not set
CONFIG_PSTORE=y
CONFIG_PSTORE_DEFLATE_COMPRESS=m
CONFIG_PSTORE_LZO_COMPRESS=m
CONFIG_PSTORE_LZ4_COMPRESS=m
CONFIG_PSTORE_LZ4HC_COMPRESS=m
# CONFIG_PSTORE_842_COMPRESS is not set
# CONFIG_PSTORE_ZSTD_COMPRESS is not set
CONFIG_PSTORE_COMPRESS=y
CONFIG_PSTORE_DEFLATE_COMPRESS_DEFAULT=y
# CONFIG_PSTORE_LZO_COMPRESS_DEFAULT is not set
# CONFIG_PSTORE_LZ4_COMPRESS_DEFAULT is not set
# CONFIG_PSTORE_LZ4HC_COMPRESS_DEFAULT is not set
CONFIG_PSTORE_COMPRESS_DEFAULT="deflate"
CONFIG_PSTORE_CONSOLE=y
CONFIG_PSTORE_PMSG=y
# CONFIG_PSTORE_FTRACE is not set
CONFIG_PSTORE_RAM=m
CONFIG_SYSV_FS=y
# CONFIG_UFS_FS is not set
CONFIG_EROFS_FS=m
CONFIG_EROFS_FS_DEBUG=y
# CONFIG_EROFS_FS_XATTR is not set
CONFIG_EROFS_FS_ZIP=y
CONFIG_EROFS_FS_CLUSTER_PAGE_LIMIT=1
# CONFIG_NETWORK_FILESYSTEMS is not set
CONFIG_NLS=y
CONFIG_NLS_DEFAULT="iso8859-1"
CONFIG_NLS_CODEPAGE_437=y
# CONFIG_NLS_CODEPAGE_737 is not set
# CONFIG_NLS_CODEPAGE_775 is not set
CONFIG_NLS_CODEPAGE_850=m
CONFIG_NLS_CODEPAGE_852=m
CONFIG_NLS_CODEPAGE_855=y
# CONFIG_NLS_CODEPAGE_857 is not set
CONFIG_NLS_CODEPAGE_860=m
CONFIG_NLS_CODEPAGE_861=y
CONFIG_NLS_CODEPAGE_862=m
# CONFIG_NLS_CODEPAGE_863 is not set
CONFIG_NLS_CODEPAGE_864=y
CONFIG_NLS_CODEPAGE_865=y
CONFIG_NLS_CODEPAGE_866=y
# CONFIG_NLS_CODEPAGE_869 is not set
# CONFIG_NLS_CODEPAGE_936 is not set
# CONFIG_NLS_CODEPAGE_950 is not set
CONFIG_NLS_CODEPAGE_932=m
CONFIG_NLS_CODEPAGE_949=y
CONFIG_NLS_CODEPAGE_874=m
CONFIG_NLS_ISO8859_8=m
CONFIG_NLS_CODEPAGE_1250=y
# CONFIG_NLS_CODEPAGE_1251 is not set
CONFIG_NLS_ASCII=m
# CONFIG_NLS_ISO8859_1 is not set
CONFIG_NLS_ISO8859_2=m
CONFIG_NLS_ISO8859_3=y
CONFIG_NLS_ISO8859_4=y
# CONFIG_NLS_ISO8859_5 is not set
CONFIG_NLS_ISO8859_6=m
CONFIG_NLS_ISO8859_7=m
CONFIG_NLS_ISO8859_9=y
CONFIG_NLS_ISO8859_13=m
CONFIG_NLS_ISO8859_14=m
CONFIG_NLS_ISO8859_15=y
CONFIG_NLS_KOI8_R=m
# CONFIG_NLS_KOI8_U is not set
# CONFIG_NLS_MAC_ROMAN is not set
# CONFIG_NLS_MAC_CELTIC is not set
CONFIG_NLS_MAC_CENTEURO=m
CONFIG_NLS_MAC_CROATIAN=m
CONFIG_NLS_MAC_CYRILLIC=m
# CONFIG_NLS_MAC_GAELIC is not set
CONFIG_NLS_MAC_GREEK=y
CONFIG_NLS_MAC_ICELAND=y
CONFIG_NLS_MAC_INUIT=y
CONFIG_NLS_MAC_ROMANIAN=y
# CONFIG_NLS_MAC_TURKISH is not set
CONFIG_NLS_UTF8=y
# CONFIG_DLM is not set
# CONFIG_UNICODE is not set
CONFIG_IO_WQ=y
# end of File systems

#
# Security options
#
CONFIG_KEYS=y
# CONFIG_KEYS_REQUEST_CACHE is not set
CONFIG_PERSISTENT_KEYRINGS=y
CONFIG_BIG_KEYS=y
CONFIG_TRUSTED_KEYS=m
# CONFIG_ENCRYPTED_KEYS is not set
CONFIG_KEY_DH_OPERATIONS=y
# CONFIG_SECURITY_DMESG_RESTRICT is not set
# CONFIG_SECURITY is not set
# CONFIG_SECURITYFS is not set
# CONFIG_PAGE_TABLE_ISOLATION is not set
CONFIG_HAVE_HARDENED_USERCOPY_ALLOCATOR=y
# CONFIG_HARDENED_USERCOPY is not set
# CONFIG_FORTIFY_SOURCE is not set
# CONFIG_STATIC_USERMODEHELPER is not set
# CONFIG_IMA_SECURE_AND_OR_TRUSTED_BOOT is not set
CONFIG_DEFAULT_SECURITY_DAC=y
CONFIG_LSM="lockdown,yama,loadpin,safesetid,integrity,bpf"

#
# Kernel hardening options
#

#
# Memory initialization
#
CONFIG_INIT_STACK_NONE=y
# CONFIG_INIT_ON_ALLOC_DEFAULT_ON is not set
# CONFIG_INIT_ON_FREE_DEFAULT_ON is not set
# end of Memory initialization
# end of Kernel hardening options
# end of Security options

CONFIG_XOR_BLOCKS=m
CONFIG_CRYPTO=y

#
# Crypto core or helper
#
CONFIG_CRYPTO_ALGAPI=y
CONFIG_CRYPTO_ALGAPI2=y
CONFIG_CRYPTO_AEAD=y
CONFIG_CRYPTO_AEAD2=y
CONFIG_CRYPTO_SKCIPHER=y
CONFIG_CRYPTO_SKCIPHER2=y
CONFIG_CRYPTO_HASH=y
CONFIG_CRYPTO_HASH2=y
CONFIG_CRYPTO_RNG=y
CONFIG_CRYPTO_RNG2=y
CONFIG_CRYPTO_RNG_DEFAULT=y
CONFIG_CRYPTO_AKCIPHER2=y
CONFIG_CRYPTO_AKCIPHER=y
CONFIG_CRYPTO_KPP2=y
CONFIG_CRYPTO_KPP=y
CONFIG_CRYPTO_ACOMP2=y
CONFIG_CRYPTO_MANAGER=y
CONFIG_CRYPTO_MANAGER2=y
CONFIG_CRYPTO_USER=m
CONFIG_CRYPTO_MANAGER_DISABLE_TESTS=y
CONFIG_CRYPTO_GF128MUL=y
CONFIG_CRYPTO_NULL=y
CONFIG_CRYPTO_NULL2=y
CONFIG_CRYPTO_PCRYPT=y
CONFIG_CRYPTO_CRYPTD=y
CONFIG_CRYPTO_AUTHENC=y
CONFIG_CRYPTO_TEST=m
CONFIG_CRYPTO_SIMD=y
CONFIG_CRYPTO_GLUE_HELPER_X86=y
CONFIG_CRYPTO_ENGINE=y

#
# Public-key cryptography
#
CONFIG_CRYPTO_RSA=y
CONFIG_CRYPTO_DH=y
CONFIG_CRYPTO_ECC=y
CONFIG_CRYPTO_ECDH=y
CONFIG_CRYPTO_ECRDSA=y
CONFIG_CRYPTO_CURVE25519=y
# CONFIG_CRYPTO_CURVE25519_X86 is not set

#
# Authenticated Encryption with Associated Data
#
CONFIG_CRYPTO_CCM=m
CONFIG_CRYPTO_GCM=y
CONFIG_CRYPTO_CHACHA20POLY1305=y
CONFIG_CRYPTO_AEGIS128=y
CONFIG_CRYPTO_AEGIS128_AESNI_SSE2=m
CONFIG_CRYPTO_SEQIV=y
# CONFIG_CRYPTO_ECHAINIV is not set

#
# Block modes
#
CONFIG_CRYPTO_CBC=y
CONFIG_CRYPTO_CFB=m
CONFIG_CRYPTO_CTR=y
# CONFIG_CRYPTO_CTS is not set
CONFIG_CRYPTO_ECB=y
CONFIG_CRYPTO_LRW=y
CONFIG_CRYPTO_OFB=m
# CONFIG_CRYPTO_PCBC is not set
CONFIG_CRYPTO_XTS=y
CONFIG_CRYPTO_KEYWRAP=m
CONFIG_CRYPTO_NHPOLY1305=y
# CONFIG_CRYPTO_NHPOLY1305_SSE2 is not set
CONFIG_CRYPTO_NHPOLY1305_AVX2=y
CONFIG_CRYPTO_ADIANTUM=y
# CONFIG_CRYPTO_ESSIV is not set

#
# Hash modes
#
CONFIG_CRYPTO_CMAC=m
CONFIG_CRYPTO_HMAC=y
CONFIG_CRYPTO_XCBC=m
CONFIG_CRYPTO_VMAC=m

#
# Digest
#
CONFIG_CRYPTO_CRC32C=y
CONFIG_CRYPTO_CRC32C_INTEL=y
CONFIG_CRYPTO_CRC32=y
# CONFIG_CRYPTO_CRC32_PCLMUL is not set
CONFIG_CRYPTO_XXHASH=m
CONFIG_CRYPTO_BLAKE2B=m
CONFIG_CRYPTO_BLAKE2S=m
CONFIG_CRYPTO_BLAKE2S_X86=m
CONFIG_CRYPTO_CRCT10DIF=y
CONFIG_CRYPTO_CRCT10DIF_PCLMUL=m
CONFIG_CRYPTO_GHASH=y
CONFIG_CRYPTO_POLY1305=y
CONFIG_CRYPTO_POLY1305_X86_64=m
CONFIG_CRYPTO_MD4=m
CONFIG_CRYPTO_MD5=m
# CONFIG_CRYPTO_MICHAEL_MIC is not set
CONFIG_CRYPTO_RMD128=y
# CONFIG_CRYPTO_RMD160 is not set
CONFIG_CRYPTO_RMD256=m
CONFIG_CRYPTO_RMD320=y
CONFIG_CRYPTO_SHA1=y
# CONFIG_CRYPTO_SHA1_SSSE3 is not set
CONFIG_CRYPTO_SHA256_SSSE3=y
CONFIG_CRYPTO_SHA512_SSSE3=m
CONFIG_CRYPTO_SHA256=y
CONFIG_CRYPTO_SHA512=y
CONFIG_CRYPTO_SHA3=m
# CONFIG_CRYPTO_SM3 is not set
CONFIG_CRYPTO_STREEBOG=y
# CONFIG_CRYPTO_TGR192 is not set
CONFIG_CRYPTO_WP512=y
CONFIG_CRYPTO_GHASH_CLMUL_NI_INTEL=y

#
# Ciphers
#
CONFIG_CRYPTO_AES=y
# CONFIG_CRYPTO_AES_TI is not set
CONFIG_CRYPTO_AES_NI_INTEL=m
# CONFIG_CRYPTO_ANUBIS is not set
CONFIG_CRYPTO_ARC4=m
# CONFIG_CRYPTO_BLOWFISH is not set
CONFIG_CRYPTO_BLOWFISH_COMMON=m
CONFIG_CRYPTO_BLOWFISH_X86_64=m
CONFIG_CRYPTO_CAMELLIA=m
CONFIG_CRYPTO_CAMELLIA_X86_64=y
CONFIG_CRYPTO_CAMELLIA_AESNI_AVX_X86_64=y
CONFIG_CRYPTO_CAMELLIA_AESNI_AVX2_X86_64=y
CONFIG_CRYPTO_CAST_COMMON=y
CONFIG_CRYPTO_CAST5=m
CONFIG_CRYPTO_CAST5_AVX_X86_64=m
CONFIG_CRYPTO_CAST6=y
CONFIG_CRYPTO_CAST6_AVX_X86_64=y
CONFIG_CRYPTO_DES=m
CONFIG_CRYPTO_DES3_EDE_X86_64=y
# CONFIG_CRYPTO_FCRYPT is not set
CONFIG_CRYPTO_KHAZAD=m
CONFIG_CRYPTO_SALSA20=y
CONFIG_CRYPTO_CHACHA20=y
# CONFIG_CRYPTO_CHACHA20_X86_64 is not set
CONFIG_CRYPTO_SEED=m
CONFIG_CRYPTO_SERPENT=y
CONFIG_CRYPTO_SERPENT_SSE2_X86_64=m
CONFIG_CRYPTO_SERPENT_AVX_X86_64=y
# CONFIG_CRYPTO_SERPENT_AVX2_X86_64 is not set
# CONFIG_CRYPTO_SM4 is not set
CONFIG_CRYPTO_TEA=m
CONFIG_CRYPTO_TWOFISH=y
CONFIG_CRYPTO_TWOFISH_COMMON=y
CONFIG_CRYPTO_TWOFISH_X86_64=y
CONFIG_CRYPTO_TWOFISH_X86_64_3WAY=m
CONFIG_CRYPTO_TWOFISH_AVX_X86_64=m

#
# Compression
#
CONFIG_CRYPTO_DEFLATE=m
CONFIG_CRYPTO_LZO=m
# CONFIG_CRYPTO_842 is not set
CONFIG_CRYPTO_LZ4=m
CONFIG_CRYPTO_LZ4HC=m
CONFIG_CRYPTO_ZSTD=m

#
# Random Number Generation
#
CONFIG_CRYPTO_ANSI_CPRNG=m
CONFIG_CRYPTO_DRBG_MENU=y
CONFIG_CRYPTO_DRBG_HMAC=y
CONFIG_CRYPTO_DRBG_HASH=y
# CONFIG_CRYPTO_DRBG_CTR is not set
CONFIG_CRYPTO_DRBG=y
CONFIG_CRYPTO_JITTERENTROPY=y
CONFIG_CRYPTO_USER_API=y
CONFIG_CRYPTO_USER_API_HASH=m
CONFIG_CRYPTO_USER_API_SKCIPHER=y
CONFIG_CRYPTO_USER_API_RNG=y
# CONFIG_CRYPTO_USER_API_AEAD is not set
# CONFIG_CRYPTO_STATS is not set
CONFIG_CRYPTO_HASH_INFO=y

#
# Crypto library routines
#
CONFIG_CRYPTO_LIB_AES=y
CONFIG_CRYPTO_LIB_ARC4=m
CONFIG_CRYPTO_ARCH_HAVE_LIB_BLAKE2S=m
CONFIG_CRYPTO_LIB_BLAKE2S_GENERIC=m
# CONFIG_CRYPTO_LIB_BLAKE2S is not set
CONFIG_CRYPTO_LIB_CHACHA_GENERIC=y
CONFIG_CRYPTO_LIB_CHACHA=m
CONFIG_CRYPTO_LIB_CURVE25519_GENERIC=y
CONFIG_CRYPTO_LIB_CURVE25519=m
CONFIG_CRYPTO_LIB_DES=y
CONFIG_CRYPTO_LIB_POLY1305_RSIZE=11
CONFIG_CRYPTO_ARCH_HAVE_LIB_POLY1305=m
CONFIG_CRYPTO_LIB_POLY1305_GENERIC=y
CONFIG_CRYPTO_LIB_POLY1305=m
CONFIG_CRYPTO_LIB_CHACHA20POLY1305=m
CONFIG_CRYPTO_LIB_SHA256=y
CONFIG_CRYPTO_HW=y
# CONFIG_CRYPTO_DEV_PADLOCK is not set
CONFIG_CRYPTO_DEV_ATMEL_I2C=y
CONFIG_CRYPTO_DEV_ATMEL_ECC=y
CONFIG_CRYPTO_DEV_ATMEL_SHA204A=y
CONFIG_CRYPTO_DEV_CCP=y
# CONFIG_CRYPTO_DEV_CCP_DD is not set
CONFIG_CRYPTO_DEV_QAT=y
CONFIG_CRYPTO_DEV_QAT_DH895xCC=m
CONFIG_CRYPTO_DEV_QAT_C3XXX=m
CONFIG_CRYPTO_DEV_QAT_C62X=m
CONFIG_CRYPTO_DEV_QAT_DH895xCCVF=y
CONFIG_CRYPTO_DEV_QAT_C3XXXVF=m
CONFIG_CRYPTO_DEV_QAT_C62XVF=m
CONFIG_CRYPTO_DEV_VIRTIO=m
CONFIG_CRYPTO_DEV_SAFEXCEL=m
CONFIG_CRYPTO_DEV_AMLOGIC_GXL=y
CONFIG_CRYPTO_DEV_AMLOGIC_GXL_DEBUG=y
CONFIG_ASYMMETRIC_KEY_TYPE=y
CONFIG_ASYMMETRIC_PUBLIC_KEY_SUBTYPE=y
CONFIG_ASYMMETRIC_TPM_KEY_SUBTYPE=m
CONFIG_X509_CERTIFICATE_PARSER=y
CONFIG_PKCS8_PRIVATE_KEY_PARSER=m
# CONFIG_TPM_KEY_PARSER is not set
CONFIG_PKCS7_MESSAGE_PARSER=y
# CONFIG_PKCS7_TEST_KEY is not set
CONFIG_SIGNED_PE_FILE_VERIFICATION=y

#
# Certificates for signature checking
#
CONFIG_MODULE_SIG_KEY="certs/signing_key.pem"
CONFIG_SYSTEM_TRUSTED_KEYRING=y
CONFIG_SYSTEM_TRUSTED_KEYS=""
# CONFIG_SYSTEM_EXTRA_CERTIFICATE is not set
# CONFIG_SECONDARY_TRUSTED_KEYRING is not set
# CONFIG_SYSTEM_BLACKLIST_KEYRING is not set
# end of Certificates for signature checking

CONFIG_BINARY_PRINTF=y

#
# Library routines
#
CONFIG_RAID6_PQ=m
CONFIG_RAID6_PQ_BENCHMARK=y
CONFIG_PACKING=y
CONFIG_BITREVERSE=y
CONFIG_GENERIC_STRNCPY_FROM_USER=y
CONFIG_GENERIC_STRNLEN_USER=y
CONFIG_GENERIC_NET_UTILS=y
CONFIG_GENERIC_FIND_FIRST_BIT=y
CONFIG_CORDIC=m
CONFIG_PRIME_NUMBERS=y
CONFIG_RATIONAL=y
CONFIG_GENERIC_PCI_IOMAP=y
CONFIG_GENERIC_IOMAP=y
CONFIG_ARCH_USE_CMPXCHG_LOCKREF=y
CONFIG_ARCH_HAS_FAST_MULTIPLIER=y
CONFIG_ARCH_USE_SYM_ANNOTATIONS=y
CONFIG_CRC_CCITT=y
CONFIG_CRC16=y
CONFIG_CRC_T10DIF=y
CONFIG_CRC_ITU_T=y
CONFIG_CRC32=y
CONFIG_CRC32_SELFTEST=y
# CONFIG_CRC32_SLICEBY8 is not set
CONFIG_CRC32_SLICEBY4=y
# CONFIG_CRC32_SARWATE is not set
# CONFIG_CRC32_BIT is not set
CONFIG_CRC64=m
CONFIG_CRC4=y
CONFIG_CRC7=y
CONFIG_LIBCRC32C=y
CONFIG_CRC8=m
CONFIG_XXHASH=m
# CONFIG_RANDOM32_SELFTEST is not set
CONFIG_ZLIB_INFLATE=y
CONFIG_ZLIB_DEFLATE=m
CONFIG_LZO_COMPRESS=m
CONFIG_LZO_DECOMPRESS=m
CONFIG_LZ4_COMPRESS=m
CONFIG_LZ4HC_COMPRESS=m
CONFIG_LZ4_DECOMPRESS=y
CONFIG_ZSTD_COMPRESS=m
CONFIG_ZSTD_DECOMPRESS=m
CONFIG_XZ_DEC=y
# CONFIG_XZ_DEC_X86 is not set
CONFIG_XZ_DEC_POWERPC=y
# CONFIG_XZ_DEC_IA64 is not set
# CONFIG_XZ_DEC_ARM is not set
CONFIG_XZ_DEC_ARMTHUMB=y
# CONFIG_XZ_DEC_SPARC is not set
CONFIG_XZ_DEC_BCJ=y
CONFIG_XZ_DEC_TEST=y
CONFIG_DECOMPRESS_GZIP=y
CONFIG_DECOMPRESS_LZ4=y
CONFIG_GENERIC_ALLOCATOR=y
CONFIG_REED_SOLOMON=y
CONFIG_REED_SOLOMON_ENC8=y
CONFIG_REED_SOLOMON_DEC8=y
CONFIG_REED_SOLOMON_ENC16=y
CONFIG_REED_SOLOMON_DEC16=y
CONFIG_BCH=y
CONFIG_INTERVAL_TREE=y
CONFIG_ASSOCIATIVE_ARRAY=y
CONFIG_HAS_IOMEM=y
CONFIG_HAS_IOPORT_MAP=y
CONFIG_HAS_DMA=y
CONFIG_NEED_SG_DMA_LENGTH=y
CONFIG_NEED_DMA_MAP_STATE=y
CONFIG_ARCH_DMA_ADDR_T_64BIT=y
CONFIG_ARCH_HAS_FORCE_DMA_UNENCRYPTED=y
CONFIG_SWIOTLB=y
CONFIG_DMA_NONCOHERENT_MMAP=y
CONFIG_DMA_REMAP=y
CONFIG_DMA_COHERENT_POOL=y
CONFIG_DMA_CMA=y

#
# Default contiguous memory area size:
#
CONFIG_CMA_SIZE_MBYTES=0
CONFIG_CMA_SIZE_PERCENTAGE=0
# CONFIG_CMA_SIZE_SEL_MBYTES is not set
# CONFIG_CMA_SIZE_SEL_PERCENTAGE is not set
# CONFIG_CMA_SIZE_SEL_MIN is not set
CONFIG_CMA_SIZE_SEL_MAX=y
CONFIG_CMA_ALIGNMENT=8
# CONFIG_DMA_API_DEBUG is not set
CONFIG_SGL_ALLOC=y
CONFIG_CHECK_SIGNATURE=y
CONFIG_CPUMASK_OFFSTACK=y
CONFIG_CPU_RMAP=y
CONFIG_DQL=y
CONFIG_GLOB=y
# CONFIG_GLOB_SELFTEST is not set
CONFIG_NLATTR=y
CONFIG_CLZ_TAB=y
CONFIG_IRQ_POLL=y
CONFIG_MPILIB=y
CONFIG_OID_REGISTRY=y
CONFIG_UCS2_STRING=y
CONFIG_HAVE_GENERIC_VDSO=y
CONFIG_GENERIC_GETTIMEOFDAY=y
CONFIG_GENERIC_VDSO_TIME_NS=y
CONFIG_FONT_SUPPORT=y
CONFIG_FONT_8x16=y
CONFIG_FONT_AUTOSELECT=y
CONFIG_SG_POOL=y
CONFIG_ARCH_HAS_PMEM_API=y
CONFIG_ARCH_HAS_UACCESS_FLUSHCACHE=y
CONFIG_ARCH_STACKWALK=y
CONFIG_STACKDEPOT=y
CONFIG_SBITMAP=y
CONFIG_STRING_SELFTEST=m
# end of Library routines

#
# Kernel hacking
#

#
# printk and dmesg options
#
CONFIG_PRINTK_TIME=y
# CONFIG_PRINTK_CALLER is not set
CONFIG_CONSOLE_LOGLEVEL_DEFAULT=7
CONFIG_CONSOLE_LOGLEVEL_QUIET=4
CONFIG_MESSAGE_LOGLEVEL_DEFAULT=4
# CONFIG_BOOT_PRINTK_DELAY is not set
CONFIG_DYNAMIC_DEBUG=y
CONFIG_DYNAMIC_DEBUG_CORE=y
# CONFIG_SYMBOLIC_ERRNAME is not set
CONFIG_DEBUG_BUGVERBOSE=y
# end of printk and dmesg options

#
# Compile-time checks and compiler options
#
CONFIG_DEBUG_INFO=y
CONFIG_DEBUG_INFO_REDUCED=y
# CONFIG_DEBUG_INFO_SPLIT is not set
# CONFIG_DEBUG_INFO_DWARF4 is not set
# CONFIG_GDB_SCRIPTS is not set
# CONFIG_ENABLE_MUST_CHECK is not set
CONFIG_FRAME_WARN=8192
CONFIG_STRIP_ASM_SYMS=y
CONFIG_READABLE_ASM=y
# CONFIG_HEADERS_INSTALL is not set
# CONFIG_DEBUG_SECTION_MISMATCH is not set
# CONFIG_SECTION_MISMATCH_WARN_ONLY is not set
CONFIG_STACK_VALIDATION=y
# CONFIG_DEBUG_FORCE_WEAK_PER_CPU is not set
# end of Compile-time checks and compiler options

#
# Generic Kernel Debugging Instruments
#
CONFIG_MAGIC_SYSRQ=y
CONFIG_MAGIC_SYSRQ_DEFAULT_ENABLE=0x1
CONFIG_MAGIC_SYSRQ_SERIAL=y
CONFIG_MAGIC_SYSRQ_SERIAL_SEQUENCE=""
CONFIG_DEBUG_FS=y
CONFIG_HAVE_ARCH_KGDB=y
# CONFIG_KGDB is not set
CONFIG_ARCH_HAS_UBSAN_SANITIZE_ALL=y
CONFIG_UBSAN=y
CONFIG_UBSAN_TRAP=y
CONFIG_UBSAN_BOUNDS=y
# CONFIG_UBSAN_MISC is not set
# CONFIG_UBSAN_SANITIZE_ALL is not set
CONFIG_UBSAN_NO_ALIGNMENT=y
CONFIG_TEST_UBSAN=m
# end of Generic Kernel Debugging Instruments

CONFIG_DEBUG_KERNEL=y
# CONFIG_DEBUG_MISC is not set

#
# Memory Debugging
#
CONFIG_PAGE_EXTENSION=y
# CONFIG_DEBUG_PAGEALLOC is not set
CONFIG_PAGE_OWNER=y
# CONFIG_PAGE_POISONING is not set
CONFIG_DEBUG_PAGE_REF=y
CONFIG_DEBUG_RODATA_TEST=y
CONFIG_ARCH_HAS_DEBUG_WX=y
CONFIG_DEBUG_WX=y
CONFIG_GENERIC_PTDUMP=y
CONFIG_PTDUMP_CORE=y
# CONFIG_PTDUMP_DEBUGFS is not set
CONFIG_DEBUG_OBJECTS=y
# CONFIG_DEBUG_OBJECTS_SELFTEST is not set
# CONFIG_DEBUG_OBJECTS_FREE is not set
CONFIG_DEBUG_OBJECTS_TIMERS=y
# CONFIG_DEBUG_OBJECTS_WORK is not set
# CONFIG_DEBUG_OBJECTS_RCU_HEAD is not set
# CONFIG_DEBUG_OBJECTS_PERCPU_COUNTER is not set
CONFIG_DEBUG_OBJECTS_ENABLE_DEFAULT=1
# CONFIG_SLUB_DEBUG_ON is not set
# CONFIG_SLUB_STATS is not set
CONFIG_HAVE_DEBUG_KMEMLEAK=y
CONFIG_DEBUG_KMEMLEAK=y
CONFIG_DEBUG_KMEMLEAK_MEM_POOL_SIZE=16000
CONFIG_DEBUG_KMEMLEAK_TEST=m
# CONFIG_DEBUG_KMEMLEAK_DEFAULT_OFF is not set
CONFIG_DEBUG_KMEMLEAK_AUTO_SCAN=y
# CONFIG_DEBUG_STACK_USAGE is not set
# CONFIG_SCHED_STACK_END_CHECK is not set
CONFIG_ARCH_HAS_DEBUG_VM_PGTABLE=y
# CONFIG_DEBUG_VM is not set
# CONFIG_DEBUG_VM_PGTABLE is not set
CONFIG_ARCH_HAS_DEBUG_VIRTUAL=y
# CONFIG_DEBUG_VIRTUAL is not set
CONFIG_DEBUG_MEMORY_INIT=y
CONFIG_MEMORY_NOTIFIER_ERROR_INJECT=m
# CONFIG_DEBUG_PER_CPU_MAPS is not set
CONFIG_HAVE_ARCH_KASAN=y
CONFIG_HAVE_ARCH_KASAN_VMALLOC=y
CONFIG_CC_HAS_KASAN_GENERIC=y
CONFIG_KASAN=y
CONFIG_KASAN_GENERIC=y
CONFIG_KASAN_OUTLINE=y
# CONFIG_KASAN_INLINE is not set
CONFIG_KASAN_STACK=1
CONFIG_KASAN_VMALLOC=y
# CONFIG_TEST_KASAN is not set
# end of Memory Debugging

CONFIG_DEBUG_SHIRQ=y

#
# Debug Oops, Lockups and Hangs
#
CONFIG_PANIC_ON_OOPS=y
CONFIG_PANIC_ON_OOPS_VALUE=1
CONFIG_PANIC_TIMEOUT=0
CONFIG_LOCKUP_DETECTOR=y
CONFIG_SOFTLOCKUP_DETECTOR=y
CONFIG_BOOTPARAM_SOFTLOCKUP_PANIC=y
CONFIG_BOOTPARAM_SOFTLOCKUP_PANIC_VALUE=1
CONFIG_HARDLOCKUP_DETECTOR_PERF=y
CONFIG_HARDLOCKUP_CHECK_TIMESTAMP=y
CONFIG_HARDLOCKUP_DETECTOR=y
CONFIG_BOOTPARAM_HARDLOCKUP_PANIC=y
CONFIG_BOOTPARAM_HARDLOCKUP_PANIC_VALUE=1
# CONFIG_DETECT_HUNG_TASK is not set
# CONFIG_WQ_WATCHDOG is not set
CONFIG_TEST_LOCKUP=y
# end of Debug Oops, Lockups and Hangs

#
# Scheduler Debugging
#
CONFIG_SCHED_DEBUG=y
CONFIG_SCHED_INFO=y
CONFIG_SCHEDSTATS=y
# end of Scheduler Debugging

# CONFIG_DEBUG_TIMEKEEPING is not set
# CONFIG_DEBUG_PREEMPT is not set

#
# Lock Debugging (spinlocks, mutexes, etc...)
#
CONFIG_LOCK_DEBUGGING_SUPPORT=y
CONFIG_PROVE_LOCKING=y
# CONFIG_PROVE_RAW_LOCK_NESTING is not set
# CONFIG_LOCK_STAT is not set
CONFIG_DEBUG_RT_MUTEXES=y
CONFIG_DEBUG_SPINLOCK=y
CONFIG_DEBUG_MUTEXES=y
CONFIG_DEBUG_WW_MUTEX_SLOWPATH=y
CONFIG_DEBUG_RWSEMS=y
CONFIG_DEBUG_LOCK_ALLOC=y
CONFIG_LOCKDEP=y
# CONFIG_DEBUG_LOCKDEP is not set
CONFIG_DEBUG_ATOMIC_SLEEP=y
CONFIG_DEBUG_LOCKING_API_SELFTESTS=y
# CONFIG_LOCK_TORTURE_TEST is not set
CONFIG_WW_MUTEX_SELFTEST=m
# end of Lock Debugging (spinlocks, mutexes, etc...)

CONFIG_TRACE_IRQFLAGS=y
CONFIG_STACKTRACE=y
# CONFIG_WARN_ALL_UNSEEDED_RANDOM is not set
# CONFIG_DEBUG_KOBJECT is not set
# CONFIG_DEBUG_KOBJECT_RELEASE is not set

#
# Debug kernel data structures
#
CONFIG_DEBUG_LIST=y
# CONFIG_DEBUG_PLIST is not set
# CONFIG_DEBUG_SG is not set
CONFIG_DEBUG_NOTIFIERS=y
# CONFIG_BUG_ON_DATA_CORRUPTION is not set
# end of Debug kernel data structures

CONFIG_DEBUG_CREDENTIALS=y

#
# RCU Debugging
#
CONFIG_PROVE_RCU=y
CONFIG_PROVE_RCU_LIST=y
CONFIG_TORTURE_TEST=m
CONFIG_RCU_PERF_TEST=m
CONFIG_RCU_TORTURE_TEST=m
CONFIG_RCU_CPU_STALL_TIMEOUT=21
# CONFIG_RCU_TRACE is not set
CONFIG_RCU_EQS_DEBUG=y
# end of RCU Debugging

# CONFIG_DEBUG_WQ_FORCE_RR_CPU is not set
# CONFIG_DEBUG_BLOCK_EXT_DEVT is not set
CONFIG_CPU_HOTPLUG_STATE_CONTROL=y
CONFIG_LATENCYTOP=y
CONFIG_USER_STACKTRACE_SUPPORT=y
CONFIG_NOP_TRACER=y
CONFIG_HAVE_FUNCTION_TRACER=y
CONFIG_HAVE_FUNCTION_GRAPH_TRACER=y
CONFIG_HAVE_DYNAMIC_FTRACE=y
CONFIG_HAVE_DYNAMIC_FTRACE_WITH_REGS=y
CONFIG_HAVE_DYNAMIC_FTRACE_WITH_DIRECT_CALLS=y
CONFIG_HAVE_FTRACE_MCOUNT_RECORD=y
CONFIG_HAVE_SYSCALL_TRACEPOINTS=y
CONFIG_HAVE_FENTRY=y
CONFIG_HAVE_C_RECORDMCOUNT=y
CONFIG_TRACER_MAX_TRACE=y
CONFIG_TRACE_CLOCK=y
CONFIG_RING_BUFFER=y
CONFIG_EVENT_TRACING=y
CONFIG_CONTEXT_SWITCH_TRACER=y
CONFIG_RING_BUFFER_ALLOW_SWAP=y
CONFIG_PREEMPTIRQ_TRACEPOINTS=y
CONFIG_TRACING=y
CONFIG_GENERIC_TRACER=y
CONFIG_TRACING_SUPPORT=y
CONFIG_FTRACE=y
# CONFIG_BOOTTIME_TRACING is not set
CONFIG_FUNCTION_TRACER=y
CONFIG_FUNCTION_GRAPH_TRACER=y
# CONFIG_DYNAMIC_FTRACE is not set
# CONFIG_FUNCTION_PROFILER is not set
# CONFIG_STACK_TRACER is not set
CONFIG_TRACE_PREEMPT_TOGGLE=y
CONFIG_PREEMPTIRQ_EVENTS=y
CONFIG_IRQSOFF_TRACER=y
# CONFIG_PREEMPT_TRACER is not set
# CONFIG_SCHED_TRACER is not set
# CONFIG_HWLAT_TRACER is not set
CONFIG_MMIOTRACE=y
CONFIG_FTRACE_SYSCALLS=y
CONFIG_TRACER_SNAPSHOT=y
CONFIG_TRACER_SNAPSHOT_PER_CPU_SWAP=y
CONFIG_BRANCH_PROFILE_NONE=y
# CONFIG_PROFILE_ANNOTATED_BRANCHES is not set
# CONFIG_PROFILE_ALL_BRANCHES is not set
CONFIG_BLK_DEV_IO_TRACE=y
# CONFIG_KPROBE_EVENTS is not set
# CONFIG_UPROBE_EVENTS is not set
CONFIG_DYNAMIC_EVENTS=y
CONFIG_TRACING_MAP=y
CONFIG_HIST_TRIGGERS=y
CONFIG_TRACE_EVENT_INJECT=y
CONFIG_TRACEPOINT_BENCHMARK=y
CONFIG_RING_BUFFER_BENCHMARK=y
CONFIG_TRACE_EVAL_MAP_FILE=y
CONFIG_GCOV_PROFILE_FTRACE=y
# CONFIG_FTRACE_STARTUP_TEST is not set
# CONFIG_RING_BUFFER_STARTUP_TEST is not set
CONFIG_MMIOTRACE_TEST=m
# CONFIG_PREEMPTIRQ_DELAY_TEST is not set
CONFIG_SYNTH_EVENT_GEN_TEST=y
CONFIG_PROVIDE_OHCI1394_DMA_INIT=y
# CONFIG_SAMPLES is not set
CONFIG_HAVE_ARCH_KCSAN=y
CONFIG_ARCH_HAS_DEVMEM_IS_ALLOWED=y
CONFIG_STRICT_DEVMEM=y
CONFIG_IO_STRICT_DEVMEM=y

#
# x86 Debugging
#
# CONFIG_DEBUG_AID_FOR_SYZBOT is not set
CONFIG_TRACE_IRQFLAGS_SUPPORT=y
CONFIG_X86_VERBOSE_BOOTUP=y
# CONFIG_EARLY_PRINTK is not set
# CONFIG_EFI_PGT_DUMP is not set
CONFIG_DEBUG_TLBFLUSH=y
CONFIG_HAVE_MMIOTRACE_SUPPORT=y
CONFIG_X86_DECODER_SELFTEST=y
# CONFIG_IO_DELAY_0X80 is not set
# CONFIG_IO_DELAY_0XED is not set
CONFIG_IO_DELAY_UDELAY=y
# CONFIG_IO_DELAY_NONE is not set
# CONFIG_DEBUG_BOOT_PARAMS is not set
# CONFIG_CPA_DEBUG is not set
CONFIG_DEBUG_ENTRY=y
CONFIG_DEBUG_NMI_SELFTEST=y
CONFIG_X86_DEBUG_FPU=y
CONFIG_PUNIT_ATOM_DEBUG=m
CONFIG_UNWINDER_ORC=y
# CONFIG_UNWINDER_FRAME_POINTER is not set
# end of x86 Debugging

#
# Kernel Testing and Coverage
#
CONFIG_KUNIT=y
CONFIG_KUNIT_DEBUGFS=y
CONFIG_KUNIT_TEST=m
# CONFIG_KUNIT_EXAMPLE_TEST is not set
CONFIG_NOTIFIER_ERROR_INJECTION=m
CONFIG_PM_NOTIFIER_ERROR_INJECT=m
CONFIG_NETDEV_NOTIFIER_ERROR_INJECT=m
CONFIG_FUNCTION_ERROR_INJECTION=y
CONFIG_FAULT_INJECTION=y
# CONFIG_FAILSLAB is not set
# CONFIG_FAIL_PAGE_ALLOC is not set
# CONFIG_FAIL_MAKE_REQUEST is not set
# CONFIG_FAIL_IO_TIMEOUT is not set
# CONFIG_FAIL_FUTEX is not set
CONFIG_FAULT_INJECTION_DEBUG_FS=y
# CONFIG_FAIL_FUNCTION is not set
CONFIG_FAIL_MMC_REQUEST=y
CONFIG_ARCH_HAS_KCOV=y
CONFIG_CC_HAS_SANCOV_TRACE_PC=y
# CONFIG_KCOV is not set
CONFIG_RUNTIME_TESTING_MENU=y
# CONFIG_LKDTM is not set
# CONFIG_TEST_LIST_SORT is not set
# CONFIG_TEST_MIN_HEAP is not set
# CONFIG_TEST_SORT is not set
# CONFIG_KPROBES_SANITY_TEST is not set
# CONFIG_BACKTRACE_SELF_TEST is not set
# CONFIG_RBTREE_TEST is not set
CONFIG_REED_SOLOMON_TEST=y
# CONFIG_INTERVAL_TREE_TEST is not set
# CONFIG_PERCPU_TEST is not set
CONFIG_ATOMIC64_SELFTEST=y
# CONFIG_TEST_HEXDUMP is not set
# CONFIG_TEST_STRING_HELPERS is not set
CONFIG_TEST_STRSCPY=m
# CONFIG_TEST_KSTRTOX is not set
CONFIG_TEST_PRINTF=m
CONFIG_TEST_BITMAP=m
# CONFIG_TEST_BITFIELD is not set
# CONFIG_TEST_UUID is not set
# CONFIG_TEST_XARRAY is not set
# CONFIG_TEST_OVERFLOW is not set
# CONFIG_TEST_RHASHTABLE is not set
# CONFIG_TEST_HASH is not set
# CONFIG_TEST_IDA is not set
CONFIG_TEST_LKM=m
CONFIG_TEST_VMALLOC=m
CONFIG_TEST_USER_COPY=m
CONFIG_TEST_BPF=m
CONFIG_TEST_BLACKHOLE_DEV=m
# CONFIG_FIND_BIT_BENCHMARK is not set
CONFIG_TEST_FIRMWARE=m
CONFIG_TEST_SYSCTL=m
CONFIG_SYSCTL_KUNIT_TEST=m
CONFIG_LIST_KUNIT_TEST=y
# CONFIG_TEST_UDELAY is not set
CONFIG_TEST_STATIC_KEYS=m
CONFIG_TEST_KMOD=m
# CONFIG_TEST_MEMCAT_P is not set
CONFIG_TEST_STACKINIT=m
CONFIG_TEST_MEMINIT=y
# CONFIG_MEMTEST is not set
# end of Kernel Testing and Coverage

# CONFIG_TWIST_KERNEL_BEHAVIOR is not set
# end of Kernel hacking

[-- Attachment #3: job-script --]
[-- Type: text/plain, Size: 4766 bytes --]

#!/bin/sh

export_top_env()
{
	export suite='boot'
	export testcase='boot'
	export category='functional'
	export timeout='10m'
	export job_origin='/lkp-src/jobs/boot.yaml'
	export queue_cmdline_keys='branch
commit
queue_at_least_once'
	export queue='validate'
	export testbox='vm-snb-240'
	export tbox_group='vm-snb'
	export branch='linux-devel/devel-catchup-202005020551'
	export commit='01edfaf177311fba9941254793431d2044b00fd7'
	export kconfig='x86_64-randconfig-c003-20200430'
	export repeat_to=4
	export nr_vm=64
	export submit_id='5eba7f97dc4dc9a1ac1c42ee'
	export job_file='/lkp/jobs/scheduled/vm-snb-240/boot-1-yocto-x86_64-minimal-20190520.cgz-01edfaf177311fba9941254793431d2044b00fd7-20200512-41388-s414l4-2.yaml'
	export id='599d4ce6b6aaf43a16b188d5ab38c25d541fb8f4'
	export queuer_version='/lkp-src'
	export model='qemu-system-x86_64 -enable-kvm -cpu SandyBridge'
	export nr_cpu=2
	export memory='8G'
	export hdd_partitions='/dev/vda /dev/vdb /dev/vdc /dev/vdd /dev/vde /dev/vdf'
	export swap_partitions='/dev/vdg'
	export need_kconfig='CONFIG_KVM_GUEST=y'
	export ssh_base_port=23032
	export rootfs='yocto-x86_64-minimal-20190520.cgz'
	export compiler='gcc-7'
	export enqueue_time='2020-05-12 18:51:09 +0800'
	export _id='5eba7f97dc4dc9a1ac1c42ee'
	export _rt='/result/boot/1/vm-snb/yocto-x86_64-minimal-20190520.cgz/x86_64-randconfig-c003-20200430/gcc-7/01edfaf177311fba9941254793431d2044b00fd7'
	export user='lkp'
	export result_root='/result/boot/1/vm-snb/yocto-x86_64-minimal-20190520.cgz/x86_64-randconfig-c003-20200430/gcc-7/01edfaf177311fba9941254793431d2044b00fd7/3'
	export scheduler_version='/lkp/lkp/.src-20200512-154330'
	export LKP_SERVER='inn'
	export arch='x86_64'
	export max_uptime=600
	export initrd='/osimage/yocto/yocto-x86_64-minimal-20190520.cgz'
	export bootloader_append='root=/dev/ram0
user=lkp
job=/lkp/jobs/scheduled/vm-snb-240/boot-1-yocto-x86_64-minimal-20190520.cgz-01edfaf177311fba9941254793431d2044b00fd7-20200512-41388-s414l4-2.yaml
ARCH=x86_64
kconfig=x86_64-randconfig-c003-20200430
branch=linux-devel/devel-catchup-202005020551
commit=01edfaf177311fba9941254793431d2044b00fd7
BOOT_IMAGE=/pkg/linux/x86_64-randconfig-c003-20200430/gcc-7/01edfaf177311fba9941254793431d2044b00fd7/vmlinuz-5.7.0-rc3-next-20200501-00012-g01edfaf177311f
max_uptime=600
RESULT_ROOT=/result/boot/1/vm-snb/yocto-x86_64-minimal-20190520.cgz/x86_64-randconfig-c003-20200430/gcc-7/01edfaf177311fba9941254793431d2044b00fd7/3
LKP_SERVER=inn
selinux=0
debug
apic=debug
sysrq_always_enabled
rcupdate.rcu_cpu_stall_timeout=100
net.ifnames=0
printk.devkmsg=on
panic=-1
softlockup_panic=1
nmi_watchdog=panic
oops=panic
load_ramdisk=2
prompt_ramdisk=0
drbd.minor_count=8
systemd.log_level=err
ignore_loglevel
console=tty0
earlyprintk=ttyS0,115200
console=ttyS0,115200
vga=normal
rw'
	export modules_initrd='/pkg/linux/x86_64-randconfig-c003-20200430/gcc-7/01edfaf177311fba9941254793431d2044b00fd7/modules.cgz'
	export lkp_initrd='/osimage/user/lkp/lkp-x86_64.cgz'
	export site='inn'
	export LKP_CGI_PORT=80
	export LKP_CIFS_PORT=139
	export schedule_notify_address=
	export queue_at_least_once=1
	export kernel='/pkg/linux/x86_64-randconfig-c003-20200430/gcc-7/01edfaf177311fba9941254793431d2044b00fd7/vmlinuz-5.7.0-rc3-next-20200501-00012-g01edfaf177311f'
	export dequeue_time='2020-05-12 18:53:08 +0800'
	export job_initrd='/lkp/jobs/scheduled/vm-snb-240/boot-1-yocto-x86_64-minimal-20190520.cgz-01edfaf177311fba9941254793431d2044b00fd7-20200512-41388-s414l4-2.cgz'

	[ -n "$LKP_SRC" ] ||
	export LKP_SRC=/lkp/${user:-lkp}/src
}

run_job()
{
	echo $$ > $TMP/run-job.pid

	. $LKP_SRC/lib/http.sh
	. $LKP_SRC/lib/job.sh
	. $LKP_SRC/lib/env.sh

	export_top_env

	run_monitor $LKP_SRC/monitors/one-shot/wrapper boot-slabinfo
	run_monitor $LKP_SRC/monitors/one-shot/wrapper boot-meminfo
	run_monitor $LKP_SRC/monitors/one-shot/wrapper memmap
	run_monitor $LKP_SRC/monitors/no-stdout/wrapper boot-time
	run_monitor $LKP_SRC/monitors/wrapper kmsg
	run_monitor $LKP_SRC/monitors/wrapper heartbeat
	run_monitor $LKP_SRC/monitors/wrapper meminfo
	run_monitor $LKP_SRC/monitors/wrapper oom-killer
	run_monitor $LKP_SRC/monitors/plain/watchdog

	run_test $LKP_SRC/tests/wrapper sleep 1
}

extract_stats()
{
	export stats_part_begin=
	export stats_part_end=

	$LKP_SRC/stats/wrapper boot-slabinfo
	$LKP_SRC/stats/wrapper boot-meminfo
	$LKP_SRC/stats/wrapper memmap
	$LKP_SRC/stats/wrapper boot-memory
	$LKP_SRC/stats/wrapper boot-time
	$LKP_SRC/stats/wrapper kernel-size
	$LKP_SRC/stats/wrapper kmsg
	$LKP_SRC/stats/wrapper sleep
	$LKP_SRC/stats/wrapper meminfo

	$LKP_SRC/stats/wrapper time sleep.time
	$LKP_SRC/stats/wrapper dmesg
	$LKP_SRC/stats/wrapper kmsg
	$LKP_SRC/stats/wrapper last_state
	$LKP_SRC/stats/wrapper stderr
	$LKP_SRC/stats/wrapper time
}

"$@"

[-- Attachment #4: dmesg.xz --]
[-- Type: application/x-xz, Size: 11180 bytes --]

Re: [tracepoint] 01edfaf177: WARNING:at_kernel/static_call.c:#__static_call_update

[Peter Zijlstra]

On Wed, May 13, 2020 at 04:48:11PM +0800, kernel test robot wrote:

> commit: 01edfaf177311fba9941254793431d2044b00fd7 ("[PATCH v4 12/18] tracepoint: Optimize using static_call()")
> url: https://github.com/0day-ci/linux/commits/Peter-Zijlstra/Add-static_call/20200502-045208

*groan*, so I would really rather you grab patches from by git tree than
suck random crap from lkml like this :/

Anyway, I _suspect_ this is fixed in a later patch that initializes
static_call earlier, but I can't tell for sure, because I really
don't know what to do to reproduce this.

> [    1.990628] WARNING: CPU: 0 PID: 0 at kernel/static_call.c:113 __static_call_update+0x83/0x29c
> [    1.990660] Modules linked in:
> [    1.990703] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.7.0-rc3-next-20200501-00012-g01edfaf177311f #1
> [    1.990742] RIP: 0010:__static_call_update+0x83/0x29c
> [    1.990781] Code: 4c 89 f2 48 ff 05 d1 9d 83 06 e8 8e 09 d2 ff 48 ff 05 d5 9d 83 06 80 3d 8e a2 83 06 00 0f 85 f3 01 00 00 48 ff 05 c9 9d 83 06 <0f> 0b 48 ff 05 c8 9d 83 06 48 ff 05 c9 9d 83 06 e9 b0 01 00 00 48
> [    1.990814] RSP: 0000:ffffffff83c07cf8 EFLAGS: 00010002
> [    1.990850] RAX: 0000000000000000 RBX: ffffffff86682620 RCX: 0000000000000000
> [    1.990884] RDX: fffffbfff0780f87 RSI: ffffffff83c918c0 RDI: fffffbfff0780f93
> [    1.990916] RBP: ffffffff812943ec R08: fffffbfff07e3551 R09: fffffbfff07e3551
> [    1.990950] R10: ffffffff83f1aa87 R11: 0000000000000001 R12: ffffffff83f6f0c0
> [    1.990982] R13: 00000000ffffffff R14: ffffffff812943ec R15: ffffffff812943ec
> [    1.991017] FS:  0000000000000000(0000) GS:ffff8881e8000000(0000) knlGS:0000000000000000
> [    1.991049] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> [    1.991081] CR2: ffff88823ffff000 CR3: 0000000003c78000 CR4: 00000000000006b0
> [    1.991119] Call Trace:
> [    1.991164]  ? __SCT__tp_func_sched_waking+0x8/0x8
> [    1.991202]  ? allocate_probes+0x2d/0x4d
> [    1.991250]  ? probe_sched_switch+0x4f/0x4f
> [    1.991286]  ? __SCT__tp_func_sched_waking+0x8/0x8
> [    1.991331]  ? probe_sched_switch+0x4f/0x4f
> [    1.991366]  tracepoint_update_call+0x6d/0x79
> [    1.991416]  tracepoint_probe_register_prio+0x337/0x47f
> [    1.991499]  tracepoint_probe_register+0x16/0x1e
> [    1.991538]  tracing_start_sched_switch+0xc3/0x1ba
> [    1.991627]  tracing_start_cmdline_record+0x11/0x19
> [    1.991664]  trace_printk_start_comm+0x1c/0x24
> [    1.991725]  trace_event_init+0x1b8/0x20a
> [    1.991775]  trace_init+0xc/0x14
> [    1.991809]  start_kernel+0x8ed/0xe78
> [    1.991862]  ? thread_stack_cache_init+0xd/0xd
> [    1.991905]  ? __early_make_pgtable+0x1b9/0x204
> [    1.991963]  ? early_make_pgtable+0x27/0x2f
> [    1.992000]  ? early_idt_handler_common+0x35/0x4c
> [    1.992131]  x86_64_start_reservations+0x42/0x4a
> [    1.992170]  x86_64_start_kernel+0xe1/0xea
> [    1.992216]  secondary_startup_64+0xa4/0xb0
> [    1.992336] irq event stamp: 0
> [    1.992371] hardirqs last  enabled at (0): [<0000000000000000>] 0x0
> [    1.992403] hardirqs last disabled at (0): [<0000000000000000>] 0x0
> [    1.992437] softirqs last  enabled at (0): [<0000000000000000>] 0x0
> [    1.992469] softirqs last disabled at (0): [<0000000000000000>] 0x0
> [    1.992562] ---[ end trace 15ea566c311b9aea ]---
> 
> 
> To reproduce:
> 
>         # build kernel
> 	cd linux
> 	cp config-5.7.0-rc3-next-20200501-00012-g01edfaf177311f .config
> 	make HOSTCC=gcc-7 CC=gcc-7 ARCH=x86_64 olddefconfig prepare modules_prepare bzImage
> 
>         git clone https://github.com/intel/lkp-tests.git
>         cd lkp-tests
>         bin/lkp qemu -k <bzImage> job-script # job-script is attached in this email

Because ^ is just not going to happen. And from the provided information
I cannot decipher what it takes to trigger this.

Also, your dmesg had the trace_printk() splat in, and that is certainly
not from these patches.

[PATCH v4 13/18] x86/alternatives: Teach text_poke_bp() to emulate RET

[Peter Zijlstra]

Future patches will need to poke a RET instruction, provide the
infrastructure required for this.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
---
 arch/x86/include/asm/text-patching.h |   17 +++++++++++++++++
 arch/x86/kernel/alternative.c        |    5 +++++
 2 files changed, 22 insertions(+)

--- a/arch/x86/include/asm/text-patching.h
+++ b/arch/x86/include/asm/text-patching.h
@@ -53,6 +53,9 @@ extern void text_poke_finish(void);
 #define INT3_INSN_SIZE		1
 #define INT3_INSN_OPCODE	0xCC
 
+#define RET_INSN_SIZE		1
+#define RET_INSN_OPCODE		0xC3
+
 #define CALL_INSN_SIZE		5
 #define CALL_INSN_OPCODE	0xE8
 
@@ -73,6 +76,7 @@ static inline int text_opcode_size(u8 op
 
 	switch(opcode) {
 	__CASE(INT3);
+	__CASE(RET);
 	__CASE(CALL);
 	__CASE(JMP32);
 	__CASE(JMP8);
@@ -138,11 +142,24 @@ static inline void int3_emulate_push(str
 	*(unsigned long *)regs->sp = val;
 }
 
+static inline unsigned long int3_emulate_pop(struct pt_regs *regs)
+{
+	unsigned long val = *(unsigned long *)regs->sp;
+	regs->sp += sizeof(unsigned long);
+	return val;
+}
+
 static inline void int3_emulate_call(struct pt_regs *regs, unsigned long func)
 {
 	int3_emulate_push(regs, regs->ip - INT3_INSN_SIZE + CALL_INSN_SIZE);
 	int3_emulate_jmp(regs, func);
 }
+
+static inline void int3_emulate_ret(struct pt_regs *regs)
+{
+	unsigned long ip = int3_emulate_pop(regs);
+	int3_emulate_jmp(regs, ip);
+}
 #endif /* !CONFIG_UML_X86 */
 
 #endif /* _ASM_X86_TEXT_PATCHING_H */
--- a/arch/x86/kernel/alternative.c
+++ b/arch/x86/kernel/alternative.c
@@ -1045,6 +1045,10 @@ int notrace poke_int3_handler(struct pt_
 		 */
 		goto out_put;
 
+	case RET_INSN_OPCODE:
+		int3_emulate_ret(regs);
+		break;
+
 	case CALL_INSN_OPCODE:
 		int3_emulate_call(regs, (long)ip + tp->rel32);
 		break;
@@ -1187,6 +1191,7 @@ void text_poke_loc_init(struct text_poke
 
 	switch (tp->opcode) {
 	case INT3_INSN_OPCODE:
+	case RET_INSN_OPCODE:
 		break;
 
 	case CALL_INSN_OPCODE:

[PATCH v4 14/18] static_call: Add static_cond_call()

[Peter Zijlstra]

Extend the static_call infrastructure to optimize the following common
pattern:

	if (func_ptr)
		func_ptr(args...)

For the trampoline (which is in effect a tail-call), we patch the
JMP.d32 into a RET, which then directly consumes the trampoline call.

For the in-line sites we replace the CALL with a NOP5.

NOTE: this is 'obviously' limited to functions with a 'void' return type.

NOTE: DEFINE_STATIC_COND_CALL() only requires a typename, as opposed
      to a full function.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
---
 arch/x86/include/asm/static_call.h |   10 ++++++++
 arch/x86/kernel/static_call.c      |   42 ++++++++++++++++++++++++++++---------
 include/linux/static_call.h        |   29 +++++++++++++++++++++++++
 3 files changed, 71 insertions(+), 10 deletions(-)

--- a/arch/x86/include/asm/static_call.h
+++ b/arch/x86/include/asm/static_call.h
@@ -30,4 +30,14 @@
 	    ".size " STATIC_CALL_TRAMP_STR(name) ", . - " STATIC_CALL_TRAMP_STR(name) " \n" \
 	    ".popsection					\n")
 
+#define ARCH_DEFINE_STATIC_CALL_RETTRAMP(name)				\
+	asm(".pushsection .static_call.text, \"ax\"		\n"	\
+	    ".align 4						\n"	\
+	    ".globl " STATIC_CALL_TRAMP_STR(name) "		\n"	\
+	    STATIC_CALL_TRAMP_STR(name) ":			\n"	\
+	    "	ret; nop; nop; nop; nop;			\n"	\
+	    ".type " STATIC_CALL_TRAMP_STR(name) ", @function	\n"	\
+	    ".size " STATIC_CALL_TRAMP_STR(name) ", . - " STATIC_CALL_TRAMP_STR(name) " \n" \
+	    ".popsection					\n")
+
 #endif /* _ASM_STATIC_CALL_H */
--- a/arch/x86/kernel/static_call.c
+++ b/arch/x86/kernel/static_call.c
@@ -4,19 +4,41 @@
 #include <linux/bug.h>
 #include <asm/text-patching.h>
 
-static void __static_call_transform(void *insn, u8 opcode, void *func)
+enum insn_type {
+	call = 0, /* site call */
+	nop = 1,  /* site cond-call */
+	jmp = 2,  /* tramp / site tail-call */
+	ret = 3,  /* tramp / site cond-tail-call */
+};
+
+static void __static_call_transform(void *insn, enum insn_type type, void *func)
 {
-	const void *code = text_gen_insn(opcode, insn, func);
+	int size = CALL_INSN_SIZE;
+	const void *code;
 
-	if (WARN_ONCE(*(u8 *)insn != opcode,
-		      "unexpected static call insn opcode 0x%x at %pS\n",
-		      opcode, insn))
-		return;
+	switch (type) {
+	case call:
+		code = text_gen_insn(CALL_INSN_OPCODE, insn, func);
+		break;
+
+	case nop:
+		code = ideal_nops[NOP_ATOMIC5];
+		break;
+
+	case jmp:
+		code = text_gen_insn(JMP32_INSN_OPCODE, insn, func);
+		break;
+
+	case ret:
+		code = text_gen_insn(RET_INSN_OPCODE, insn, func);
+		size = RET_INSN_SIZE;
+		break;
+	}
 
-	if (memcmp(insn, code, CALL_INSN_SIZE) == 0)
+	if (memcmp(insn, code, size) == 0)
 		return;
 
-	text_poke_bp(insn, code, CALL_INSN_SIZE, NULL);
+	text_poke_bp(insn, code, size, NULL);
 }
 
 void arch_static_call_transform(void *site, void *tramp, void *func)
@@ -24,10 +46,10 @@ void arch_static_call_transform(void *si
 	mutex_lock(&text_mutex);
 
 	if (tramp)
-		__static_call_transform(tramp, JMP32_INSN_OPCODE, func);
+		__static_call_transform(tramp, jmp + !func, func);
 
 	if (IS_ENABLED(CONFIG_HAVE_STATIC_CALL_INLINE) && site)
-		__static_call_transform(site, CALL_INSN_OPCODE, func);
+		__static_call_transform(site, !func, func);
 
 	mutex_unlock(&text_mutex);
 }
--- a/include/linux/static_call.h
+++ b/include/linux/static_call.h
@@ -16,7 +16,9 @@
  *
  *   DECLARE_STATIC_CALL(name, func);
  *   DEFINE_STATIC_CALL(name, func);
+ *   DEFINE_STATIC_COND_CALL(name, typename);
  *   static_call(name)(args...);
+ *   static_cond_call(name)(args...)
  *   static_call_update(name, func);
  *
  * Usage example:
@@ -120,7 +122,16 @@ extern int static_call_text_reserved(voi
 	};								\
 	ARCH_DEFINE_STATIC_CALL_TRAMP(name, _func)
 
+#define DEFINE_STATIC_COND_CALL(name, _func)				\
+	DECLARE_STATIC_CALL(name, _func);				\
+	struct static_call_key STATIC_CALL_KEY(name) = {		\
+		.func = NULL,						\
+		.type = 1,						\
+	};								\
+	ARCH_DEFINE_STATIC_CALL_RETTRAMP(name)
+
 #define static_call(name)	__static_call(name)
+#define static_cond_call(name)	(void)__static_call(name)
 
 #define EXPORT_STATIC_CALL(name)					\
 	EXPORT_SYMBOL(STATIC_CALL_KEY(name));				\
@@ -143,7 +154,15 @@ struct static_call_key {
 	};								\
 	ARCH_DEFINE_STATIC_CALL_TRAMP(name, _func)
 
+#define DEFINE_STATIC_COND_CALL(name, _func)				\
+	DECLARE_STATIC_CALL(name, _func);				\
+	struct static_call_key STATIC_CALL_KEY(name) = {		\
+		.func = NULL,						\
+	};								\
+	ARCH_DEFINE_STATIC_CALL_RETTRAMP(name)
+
 #define static_call(name)	__static_call(name)
+#define static_cond_call(name)	(void)__static_call(name)
 
 static inline
 void __static_call_update(struct static_call_key *key, void *tramp, void *func)
@@ -179,9 +198,19 @@ struct static_call_key {
 		.func = _func,						\
 	}
 
+#define DEFINE_STATIC_COND_CALL(name, _func)				\
+	DECLARE_STATIC_CALL(name, _func);				\
+	struct static_call_key STATIC_CALL_KEY(name) = {		\
+		.func = NULL,						\
+	}
+
 #define static_call(name)						\
 	((typeof(STATIC_CALL_TRAMP(name))*)(STATIC_CALL_KEY(name).func))
 
+#define static_cond_call(name)						\
+	if (STATIC_CALL_KEY(name).func)					\
+		((typeof(STATIC_CALL_TRAMP(name))*)(STATIC_CALL_KEY(name).func))
+
 static inline
 void __static_call_update(struct static_call_key *key, void *tramp, void *func)
 {

Re: [PATCH v4 14/18] static_call: Add static_cond_call()

[Rasmus Villemoes]

On 01/05/2020 22.29, Peter Zijlstra wrote:
> Extend the static_call infrastructure to optimize the following common
> pattern:
> 
> 	if (func_ptr)
> 		func_ptr(args...)
> 
> +
>  #define static_call(name)	__static_call(name)
> +#define static_cond_call(name)	(void)__static_call(name)
>  
> +
>  #define static_call(name)	__static_call(name)
> +#define static_cond_call(name)	(void)__static_call(name)
>  

> +#define static_cond_call(name)						\
> +	if (STATIC_CALL_KEY(name).func)					\
> +		((typeof(STATIC_CALL_TRAMP(name))*)(STATIC_CALL_KEY(name).func))
> +

This addresses neither the READ_ONCE issue nor the fact that, AFAICT,
the semantics of

  static_cond_call(foo)(i++)

will depend on CONFIG_HAVE_STATIC_CALL. Also, I'd have appreciated being
cc'ed on new revisions instead of stumbling on it by chance.

Rasmus

Re: [PATCH v4 14/18] static_call: Add static_cond_call()

[Peter Zijlstra]

On Sat, May 02, 2020 at 03:08:00PM +0200, Rasmus Villemoes wrote:
> On 01/05/2020 22.29, Peter Zijlstra wrote:
> > Extend the static_call infrastructure to optimize the following common
> > pattern:
> > 
> > 	if (func_ptr)
> > 		func_ptr(args...)
> > 
> > +
> >  #define static_call(name)	__static_call(name)
> > +#define static_cond_call(name)	(void)__static_call(name)
> >  
> > +
> >  #define static_call(name)	__static_call(name)
> > +#define static_cond_call(name)	(void)__static_call(name)
> >  
> 
> > +#define static_cond_call(name)						\
> > +	if (STATIC_CALL_KEY(name).func)					\
> > +		((typeof(STATIC_CALL_TRAMP(name))*)(STATIC_CALL_KEY(name).func))
> > +
> 
> This addresses neither the READ_ONCE issue nor the fact that,

> AFAICT,
> the semantics of
> 
>   static_cond_call(foo)(i++)
> 
> will depend on CONFIG_HAVE_STATIC_CALL.

True.

So there is something utterly terrible we can do to address both:


void __static_call_nop(void)
{
}

#define __static_cond_call(name) \
({ \
	void *func = READ_ONCE(STATIC_CALL_KEY(name).func); \
	if (!func) \
		func = &__static_call_nop; \
	(typeof(STATIC_CALL_TRAMP(name))*)func; \
})

#define static_cond_call(name) (void)__static_cond_call(name)


This gets us into Undefined Behaviour territory, but it ought to work.

It adds the READ_ONCE(), and it cures the argument evaluation issue.

> Also, I'd have appreciated being
> cc'ed on new revisions instead of stumbling on it by chance.

Sorry, my bad, I forgot about that :-/. I rushed to repost, and simply
forgot a few things.

Re: [PATCH v4 14/18] static_call: Add static_cond_call()

[Rasmus Villemoes]

On 03/05/2020 14.58, Peter Zijlstra wrote:
> On Sat, May 02, 2020 at 03:08:00PM +0200, Rasmus Villemoes wrote:
>> On 01/05/2020 22.29, Peter Zijlstra wrote:

>>> +#define static_cond_call(name)						\
>>> +	if (STATIC_CALL_KEY(name).func)					\
>>> +		((typeof(STATIC_CALL_TRAMP(name))*)(STATIC_CALL_KEY(name).func))
>>> +
>>
>> This addresses neither the READ_ONCE issue nor the fact that,
>> AFAICT, the semantics of
>>
>>   static_cond_call(foo)(i++)
>>
>> will depend on CONFIG_HAVE_STATIC_CALL.
> 
> True.
> 
> So there is something utterly terrible we can do to address both:
> 
> void __static_call_nop(void)
> {
> }
> 
> #define __static_cond_call(name) \
> ({ \
> 	void *func = READ_ONCE(STATIC_CALL_KEY(name).func); \
> 	if (!func) \
> 		func = &__static_call_nop; \
> 	(typeof(STATIC_CALL_TRAMP(name))*)func; \
> })
> 
> #define static_cond_call(name) (void)__static_cond_call(name)
> 
> This gets us into Undefined Behaviour territory, but it ought to work.
> 
> It adds the READ_ONCE(), and it cures the argument evaluation issue.

Indeed, that is horrible. And it "fixes" the argument evaluation by
changing the !HAVE_STATIC_CALL case to match the HAVE_STATIC_CALL, not
the other way around, which means that it is not a direct equivalent to the

  if (foo)
     foo(a, b, c)

[which pattern of course has the READ_ONCE issue, but each individual
existing site with that may be ok for various reasons].

Is gcc smart enough to change the if (!func) to a jump across the
function call (but still evaluting side effects in args), or is
__static_call_nop actually emitted and called? If the latter, then one
might as well patch the write-side to do "WRITE_ONCE(foo, func ? :
__static_call_nop)" and elide the test from __static_cond_call() - in
fact, that just becomes a single READ_ONCE. [There's probably some
annoying issue with making sure static initialization of foo points at
__static_call_nop].

And that brings me to the other issue I raised - do you have a few
examples of call sites that could use this, so we can see disassembly
before/after? I'm still concerned that, even if there are no
side-effects in the arguments, you still force the compiler to
spill/shuffle registers for call/restore unconditionally, whereas with a
good'ol if(), all that work is guarded by the load+test.

Rasmus

Re: [PATCH v4 14/18] static_call: Add static_cond_call()

[Peter Zijlstra]

On Mon, May 04, 2020 at 09:20:03AM +0200, Rasmus Villemoes wrote:

> > So there is something utterly terrible we can do to address both:
> > 
> > void __static_call_nop(void)
> > {
> > }
> > 
> > #define __static_cond_call(name) \
> > ({ \
> > 	void *func = READ_ONCE(STATIC_CALL_KEY(name).func); \
> > 	if (!func) \
> > 		func = &__static_call_nop; \
> > 	(typeof(STATIC_CALL_TRAMP(name))*)func; \
> > })
> > 
> > #define static_cond_call(name) (void)__static_cond_call(name)
> > 
> > This gets us into Undefined Behaviour territory, but it ought to work.
> > 
> > It adds the READ_ONCE(), and it cures the argument evaluation issue.
> 
> Indeed, that is horrible. And it "fixes" the argument evaluation by
> changing the !HAVE_STATIC_CALL case to match the HAVE_STATIC_CALL, not
> the other way around,

Correct; making it the other way is far more 'interesting'. It would
basically mean combining the static_branch and static_call, but that
would also make it less optimal for simple forwarding cases.

> which means that it is not a direct equivalent to the
> 
>   if (foo)
>      foo(a, b, c)
> 
> [which pattern of course has the READ_ONCE issue, but each individual
> existing site with that may be ok for various reasons].
> 
> Is gcc smart enough to change the if (!func) to a jump across the
> function call (but still evaluting side effects in args), or is
> __static_call_nop actually emitted and called?

I was hoping it would be clever, but I just tried (find below) and it is
not -- although there's always hoping a newer version / clang might be
smarter.

It does indeed emit the nop function :/

> If the latter, then one
> might as well patch the write-side to do "WRITE_ONCE(foo, func ? :
> __static_call_nop)" and elide the test from __static_cond_call() - in
> fact, that just becomes a single READ_ONCE. [There's probably some
> annoying issue with making sure static initialization of foo points at
> __static_call_nop].

But that would not give a more clever compiler the ability to do the
'right' thing here..

> And that brings me to the other issue I raised - do you have a few
> examples of call sites that could use this, so we can see disassembly
> before/after?

Patch 17 has a few -- which is why I wrote the support in the first
place. Obviously those will never ever hit the !HAVE_STATIC_BRANCH case.

> I'm still concerned that, even if there are no
> side-effects in the arguments, you still force the compiler to
> spill/shuffle registers for call/restore unconditionally, whereas with a
> good'ol if(), all that work is guarded by the load+test.

https://godbolt.org/z/SDRG2q

---
#include <stddef.h>


#define READ_ONCE(var)		(*((volatile typeof(var) *)&(var)))
#define WRITE_ONCE(var, val)	(*((volatile typeof(var) *)&(var)) = (val))

struct static_call_key {
	void *func;
};

#define DECLARE_STATIC_CALL(name, func)	\
	extern struct static_call_key name; \
	extern typeof(func) __SCT__##name;

#define DEFINE_STATIC_COND_CALL(name, _func) \
	DECLARE_STATIC_CALL(name, _func) \
	struct static_call_key name = { \
		.func = NULL, \
	}

static void __static_call_nop(void)
{
}

#define __static_cond_call(name) \
({ \
	void *func = READ_ONCE(name.func); \
	if (!func) \
		func = &__static_call_nop; \
	(typeof(__SCT__##name)*)func; \
})

#define static_cond_call(name) (void)__static_cond_call(name)

static void inline static_call_update(struct static_call_key *call, void *func)
{
	WRITE_ONCE(call->func, func);
}

volatile int _x;

void bar(int x)
{
	_x = x;
}

DEFINE_STATIC_COND_CALL(foo, bar);

void ponies(int x)
{
	static_cond_call(foo)(x);
}

Re: [PATCH v4 14/18] static_call: Add static_cond_call()

[Rasmus Villemoes]

On 04/05/2020 22.14, Peter Zijlstra wrote:
> On Mon, May 04, 2020 at 09:20:03AM +0200, Rasmus Villemoes wrote:
> 
>>
>> Indeed, that is horrible. And it "fixes" the argument evaluation by
>> changing the !HAVE_STATIC_CALL case to match the HAVE_STATIC_CALL, not
>> the other way around,
> 
> Correct; making it the other way is far more 'interesting'. It would
> basically mean combining the static_branch and static_call, but that
> would also make it less optimal for simple forwarding cases.

Yes, I can see how implementing that would be quite hard.

>> which means that it is not a direct equivalent to the
>>
>>   if (foo)
>>      foo(a, b, c)
>>
>> [which pattern of course has the READ_ONCE issue, but each individual
>> existing site with that may be ok for various reasons].
>>
>> Is gcc smart enough to change the if (!func) to a jump across the
>> function call (but still evaluting side effects in args), or is
>> __static_call_nop actually emitted and called?
> 
> I was hoping it would be clever, but I just tried (find below) and it is
> not -- although there's always hoping a newer version / clang might be
> smarter.
> 
> It does indeed emit the nop function :/

Hm.

>> If the latter, then one
>> might as well patch the write-side to do "WRITE_ONCE(foo, func ? :
>> __static_call_nop)" and elide the test from __static_cond_call() - in
>> fact, that just becomes a single READ_ONCE. [There's probably some
>> annoying issue with making sure static initialization of foo points at
>> __static_call_nop].
> 
> But that would not give a more clever compiler the ability to do the
> 'right' thing here..

True. However, I think it's unlikely we'll see a compiler being that
clever anytime soon.

Anyway, it's hard to judge what version of the !HAVE_STATIC_CALL
implementation is best when there's no !HAVE_STATIC_CALL use cases to
look at. I just want to ensure that whatever limitations or gotchas
(e.g., "arguments are evaluated regardless of NULLness of func", or
alternatively "arguments must not have side effects") it ends up with
get documented.

> 
> #define __static_cond_call(name) \
> ({ \
> 	void *func = READ_ONCE(name.func); \
> 	if (!func) \
> 		func = &__static_call_nop; \
> 	(typeof(__SCT__##name)*)func; \
> })

I think you can just make it

#define __static_cond_call(name) \
( \
(typeof(__SCT__##name)*) ((void *)name.func ? : (void *)__static_call_nop) \
)

but that simplification is not enough to make gcc change its mind about
how to compile it :( But I'm guessing that various sanitizers or static
checkers might complain about the UB.

Rasmus

Re: [PATCH v4 14/18] static_call: Add static_cond_call()

[Peter Zijlstra]

On Tue, May 05, 2020 at 09:50:26AM +0200, Rasmus Villemoes wrote:
> On 04/05/2020 22.14, Peter Zijlstra wrote:

> Anyway, it's hard to judge what version of the !HAVE_STATIC_CALL
> implementation is best when there's no !HAVE_STATIC_CALL use cases to
> look at. I just want to ensure that whatever limitations or gotchas
> (e.g., "arguments are evaluated regardless of NULLness of func", or
> alternatively "arguments must not have side effects") it ends up with
> get documented.

I can certainly try and write a better comment for it.

> > #define __static_cond_call(name) \
> > ({ \
> > 	void *func = READ_ONCE(name.func); \
> > 	if (!func) \
> > 		func = &__static_call_nop; \
> > 	(typeof(__SCT__##name)*)func; \
> > })
> 
> I think you can just make it
> 
> #define __static_cond_call(name) \
> ( \
> (typeof(__SCT__##name)*) ((void *)name.func ? : (void *)__static_call_nop) \
> )

I _think_ the compiler sees the two as exactly the same, but then, I've
not seen the inside of a modern compiler.

> but that simplification is not enough to make gcc change its mind about
> how to compile it :( But I'm guessing that various sanitizers or static
> checkers might complain about the UB.

Yeah, we'll see.

Re: [PATCH v4 14/18] static_call: Add static_cond_call()

[Peter Zijlstra]

HJ, Nick,

Any chance any of you can see a way to make your respective compilers
not emit utter junk for this?

On Mon, May 04, 2020 at 10:14:45PM +0200, Peter Zijlstra wrote:

> https://godbolt.org/z/SDRG2q
> 
> ---
> #include <stddef.h>
> 
> 
> #define READ_ONCE(var)		(*((volatile typeof(var) *)&(var)))
> #define WRITE_ONCE(var, val)	(*((volatile typeof(var) *)&(var)) = (val))
> 
> struct static_call_key {
> 	void *func;
> };
> 
> #define DECLARE_STATIC_CALL(name, func)	\
> 	extern struct static_call_key name; \
> 	extern typeof(func) __SCT__##name;
> 
> #define DEFINE_STATIC_COND_CALL(name, _func) \
> 	DECLARE_STATIC_CALL(name, _func) \
> 	struct static_call_key name = { \
> 		.func = NULL, \
> 	}
> 
> static void __static_call_nop(void)
> {
> }
> 
> #define __static_cond_call(name) \
> ({ \
> 	void *func = READ_ONCE(name.func); \
> 	if (!func) \
> 		func = &__static_call_nop; \
> 	(typeof(__SCT__##name)*)func; \
> })
> 
> #define static_cond_call(name) (void)__static_cond_call(name)
> 
> static void inline static_call_update(struct static_call_key *call, void *func)
> {
> 	WRITE_ONCE(call->func, func);
> }
> 
> volatile int _x;
> 
> void bar(int x)
> {
> 	_x = x;
> }
> 
> DEFINE_STATIC_COND_CALL(foo, bar);
> 
> void ponies(int x)
> {
> 	static_cond_call(foo)(x);
> }

Re: [PATCH v4 14/18] static_call: Add static_cond_call()

[Nick Desaulniers]

On Tue, May 5, 2020 at 2:36 AM Peter Zijlstra <peterz@infradead.org> wrote:
>
>
> HJ, Nick,
>
> Any chance any of you can see a way to make your respective compilers
> not emit utter junk for this?
>
> On Mon, May 04, 2020 at 10:14:45PM +0200, Peter Zijlstra wrote:
>
> > https://godbolt.org/z/SDRG2q

Woah, a godbolt link! Now we're speaking the same language.  What were
you expecting? Us to remove the conditional check that a volatile read
wasn't NULL? (Not using READ_ONCE, produces the direct tail call I
suspect you're looking for, but am unsure if that's what you meant,
and understand that's not a solution).  I am simultaneously impressed
and disgusted by this btw, cool stuff.

i.e.
void *func = &name.func; \
rather than
void *func = READ_ONCE(name.func); \
(I'm surprised that `&name.func;` and `name.func;` also produce
different results).

> >
> > ---
> > #include <stddef.h>
> >
> >
> > #define READ_ONCE(var)                (*((volatile typeof(var) *)&(var)))
> > #define WRITE_ONCE(var, val)  (*((volatile typeof(var) *)&(var)) = (val))
> >
> > struct static_call_key {
> >       void *func;
> > };
> >
> > #define DECLARE_STATIC_CALL(name, func)       \
> >       extern struct static_call_key name; \
> >       extern typeof(func) __SCT__##name;
> >
> > #define DEFINE_STATIC_COND_CALL(name, _func) \
> >       DECLARE_STATIC_CALL(name, _func) \
> >       struct static_call_key name = { \
> >               .func = NULL, \
> >       }
> >
> > static void __static_call_nop(void)
> > {
> > }
> >
> > #define __static_cond_call(name) \
> > ({ \
> >       void *func = READ_ONCE(name.func); \
> >       if (!func) \
> >               func = &__static_call_nop; \
> >       (typeof(__SCT__##name)*)func; \
> > })
> >
> > #define static_cond_call(name) (void)__static_cond_call(name)
> >
> > static void inline static_call_update(struct static_call_key *call, void *func)
> > {
> >       WRITE_ONCE(call->func, func);
> > }
> >
> > volatile int _x;
> >
> > void bar(int x)
> > {
> >       _x = x;
> > }
> >
> > DEFINE_STATIC_COND_CALL(foo, bar);
> >
> > void ponies(int x)
> > {
> >       static_cond_call(foo)(x);
> > }



-- 
Thanks,
~Nick Desaulniers

Re: [PATCH v4 14/18] static_call: Add static_cond_call()

[Nick Desaulniers]

On Tue, May 5, 2020 at 11:13 AM Nick Desaulniers
<ndesaulniers@google.com> wrote:
>
> On Tue, May 5, 2020 at 2:36 AM Peter Zijlstra <peterz@infradead.org> wrote:
> >
> >
> > HJ, Nick,
> >
> > Any chance any of you can see a way to make your respective compilers
> > not emit utter junk for this?
> >
> > On Mon, May 04, 2020 at 10:14:45PM +0200, Peter Zijlstra wrote:
> >
> > > https://godbolt.org/z/SDRG2q
>
> Woah, a godbolt link! Now we're speaking the same language.  What were
> you expecting? Us to remove the conditional check that a volatile read
> wasn't NULL? (Not using READ_ONCE, produces the direct tail call I
> suspect you're looking for, but am unsure if that's what you meant,
> and understand that's not a solution).  I am simultaneously impressed
> and disgusted by this btw, cool stuff.
>
> i.e.
> void *func = &name.func; \
> rather than
> void *func = READ_ONCE(name.func); \

Changing
void *func = READ_ONCE(name.func); \
to
void *func = &READ_ONCE(name.func); \
produces the tail call.  Not sure if that's relevant/what you were
looking for/even correct (haven't thought to hard about the
implications of that change; juggling other stuff ATM)

> (I'm surprised that `&name.func;` and `name.func;` also produce
> different results).
>
> > >
> > > ---
> > > #include <stddef.h>
> > >
> > >
> > > #define READ_ONCE(var)                (*((volatile typeof(var) *)&(var)))
> > > #define WRITE_ONCE(var, val)  (*((volatile typeof(var) *)&(var)) = (val))
> > >
> > > struct static_call_key {
> > >       void *func;
> > > };
> > >
> > > #define DECLARE_STATIC_CALL(name, func)       \
> > >       extern struct static_call_key name; \
> > >       extern typeof(func) __SCT__##name;
> > >
> > > #define DEFINE_STATIC_COND_CALL(name, _func) \
> > >       DECLARE_STATIC_CALL(name, _func) \
> > >       struct static_call_key name = { \
> > >               .func = NULL, \
> > >       }
> > >
> > > static void __static_call_nop(void)
> > > {
> > > }
> > >
> > > #define __static_cond_call(name) \
> > > ({ \
> > >       void *func = READ_ONCE(name.func); \
> > >       if (!func) \
> > >               func = &__static_call_nop; \
> > >       (typeof(__SCT__##name)*)func; \
> > > })
> > >
> > > #define static_cond_call(name) (void)__static_cond_call(name)
> > >
> > > static void inline static_call_update(struct static_call_key *call, void *func)
> > > {
> > >       WRITE_ONCE(call->func, func);
> > > }
> > >
> > > volatile int _x;
> > >
> > > void bar(int x)
> > > {
> > >       _x = x;
> > > }
> > >
> > > DEFINE_STATIC_COND_CALL(foo, bar);
> > >
> > > void ponies(int x)
> > > {
> > >       static_cond_call(foo)(x);
> > > }
>
>
>
> --
> Thanks,
> ~Nick Desaulniers



-- 
Thanks,
~Nick Desaulniers

Re: [PATCH v4 14/18] static_call: Add static_cond_call()

[Linus Torvalds]

On Tue, May 5, 2020 at 11:28 AM Nick Desaulniers
<ndesaulniers@google.com> wrote:
>
> Changing
> void *func = READ_ONCE(name.func); \
> to
> void *func = &READ_ONCE(name.func); \

What? That makes no sense.

Yes,

    void *func = foo;

and

   void *func = &foo;

are the same thing, _if_ "foo" is an actual function, because then
"foo" degrades from a function to a pointer to a function as part of C
type semantics.

But that's not the case here. READ_ONCE(name.func) isn't a function -
it's a pointer to a function. So it doesn't degrade to anything at
all, and adding a '&' in front ot it completely changes the meaning of
the expression. So now the '&' changes it from "pointer to a function"
to "pointer to a pointer to a function", and the end result is not the
same thing any more.

Without the "&" it will call the function "bar" (which is the function
pointer that was assigned).

With the "&", it will not not call a function at all, it will do a
call to an address that is actually data of type "struct
static_call_key".

That's also why the NULL pointer check goes away: now the pointer is a
pointer to static data, which can never be NULL.

That said, I found it interesting that the volatile read also goes
away. That struck me as strange. But then I thought about it somem
more, and realized that the '&' basically just peels off the '*', so
now there isn't any actual volatile access any more, which is why the
read went away too.

Anyway, adding that '&' completely changes the meaning of the test.

Your initial reaction that "you can't compile away the read and the
test of NULL" was correct, I think.

                   Linus

Re: [PATCH v4 14/18] static_call: Add static_cond_call()

[Mathieu Desnoyers]

----- On May 5, 2020, at 2:48 PM, Linus Torvalds torvalds@linux-foundation.org wrote:
[...]
> 
> Your initial reaction that "you can't compile away the read and the
> test of NULL" was correct, I think.

I suspect this pattern of "if (func != NULL) func(...)" could be semantically
changed to just invoking an empty function which effectively does nothing.
This would remove the need to do a pointer check in the first place. But maybe
I'm missing something subtle about why it has not been done in this context.

Thanks,

Mathieu

-- 
Mathieu Desnoyers
EfficiOS Inc.
http://www.efficios.com

Re: [PATCH v4 14/18] static_call: Add static_cond_call()

[Nick Desaulniers]

On Tue, May 5, 2020 at 12:00 PM Mathieu Desnoyers
<mathieu.desnoyers@efficios.com> wrote:
>
> ----- On May 5, 2020, at 2:48 PM, Linus Torvalds torvalds@linux-foundation.org wrote:
> [...]
> >
> > Your initial reaction that "you can't compile away the read and the
> > test of NULL" was correct, I think.
>
> I suspect this pattern of "if (func != NULL) func(...)" could be semantically
> changed to just invoking an empty function which effectively does nothing.
> This would remove the need to do a pointer check in the first place. But maybe
> I'm missing something subtle about why it has not been done in this context.

Good idea, this eliminates the check: https://godbolt.org/z/Xugo9w
but you still have an indirect tail call (I think a direct tail call
is the desired solution?)
-- 
Thanks,
~Nick Desaulniers

Re: [PATCH v4 14/18] static_call: Add static_cond_call()

[Mathieu Desnoyers]

----- On May 5, 2020, at 3:57 PM, ndesaulniers ndesaulniers@google.com wrote:

> On Tue, May 5, 2020 at 12:00 PM Mathieu Desnoyers
> <mathieu.desnoyers@efficios.com> wrote:
>>
>> ----- On May 5, 2020, at 2:48 PM, Linus Torvalds torvalds@linux-foundation.org
>> wrote:
>> [...]
>> >
>> > Your initial reaction that "you can't compile away the read and the
>> > test of NULL" was correct, I think.
>>
>> I suspect this pattern of "if (func != NULL) func(...)" could be semantically
>> changed to just invoking an empty function which effectively does nothing.
>> This would remove the need to do a pointer check in the first place. But maybe
>> I'm missing something subtle about why it has not been done in this context.
> 
> Good idea, this eliminates the check: https://godbolt.org/z/Xugo9w
> but you still have an indirect tail call (I think a direct tail call
> is the desired solution?)

Actually, if the goal is to do code patching of the call, I wonder
what makes it OK to "guess" all the call patterns generated by the compiler ?
AFAIU this is not an ABI in any way. For instance, a new compiler version could
choose to add some no-op instructions within this pattern just because it feels
like it.

For static jumps, we worked with the compiler people to add "asm goto ()" so
we could express a jump in assembly which would branch outside of the asm.
Emitting the jump in assembly allows us to control the exact code pattern,
which can then be patched, and the asm goto operands allow the compiler to
be in control of all the allowed branch targets.

I'm again possibly missing something, but it looks like this proposal of static_call()
(especially the static_cond_call part) is trying to just assume the common call
patterns generated by the compilers, and patch those. What is the expected behavior
if a compiler ends up generating unknown code patterns in future versions ?

I would think a more robust approach would be to, again, work with the compiler people
and introduce something like:

asm call ("asm goes here" : : : funcA, funcB, funcC )

which would allow patching the call emitted _in assembly_ between the various
available targets. Bonus points if the compiler can let the asm know whether
it's a standard call or tail-call.

Then once we have that, we can start doing fun stuff like adding a conditional
within the assembly, but I don't see why the conditional should be the same
variable as the actual function pointer: each can be changed independently as
long as the function pointer always points to a "valid" function (not NULL).

Thanks,

Mathieu

-- 
Mathieu Desnoyers
EfficiOS Inc.
http://www.efficios.com

Re: [PATCH v4 14/18] static_call: Add static_cond_call()

[Peter Zijlstra]

On Tue, May 05, 2020 at 04:27:44PM -0400, Mathieu Desnoyers wrote:
> Actually, if the goal is to do code patching of the call, I wonder
> what makes it OK to "guess" all the call patterns generated by the compiler ?

We're not guessing, have have objtool read the compiler output and
record the location for us. The compiler can generate whatever it likes.

Re: [PATCH v4 14/18] static_call: Add static_cond_call()

[Mathieu Desnoyers]

----- On May 6, 2020, at 9:55 AM, Peter Zijlstra peterz@infradead.org wrote:

> On Tue, May 05, 2020 at 04:27:44PM -0400, Mathieu Desnoyers wrote:
>> Actually, if the goal is to do code patching of the call, I wonder
>> what makes it OK to "guess" all the call patterns generated by the compiler ?
> 
> We're not guessing, have have objtool read the compiler output and
> record the location for us. The compiler can generate whatever it likes.

So is the plan to adapt objtool if future compilers change the generated
instruction patterns ?

Thanks,

Mathieu


-- 
Mathieu Desnoyers
EfficiOS Inc.
http://www.efficios.com

Re: [PATCH v4 14/18] static_call: Add static_cond_call()

[Peter Zijlstra]

On Wed, May 06, 2020 at 10:01:12AM -0400, Mathieu Desnoyers wrote:
> ----- On May 6, 2020, at 9:55 AM, Peter Zijlstra peterz@infradead.org wrote:
> 
> > On Tue, May 05, 2020 at 04:27:44PM -0400, Mathieu Desnoyers wrote:
> >> Actually, if the goal is to do code patching of the call, I wonder
> >> what makes it OK to "guess" all the call patterns generated by the compiler ?
> > 
> > We're not guessing, have have objtool read the compiler output and
> > record the location for us. The compiler can generate whatever it likes.
> 
> So is the plan to adapt objtool if future compilers change the generated
> instruction patterns ?

If needed, sure. I don't really see what a compiler can do differently
though.

objtool looks for:

	JMP/CALL	__SCT__##foo

and writes a .static_call_sites table entry for it. Anything else we
can't rewrite anyway and will have to keep relying on the trampoline
working (which we also update, so that's fine).

Re: [PATCH v4 14/18] static_call: Add static_cond_call()

[Peter Zijlstra]

On Tue, May 05, 2020 at 11:13:53AM -0700, Nick Desaulniers wrote:
> On Tue, May 5, 2020 at 2:36 AM Peter Zijlstra <peterz@infradead.org> wrote:
> >
> >
> > HJ, Nick,
> >
> > Any chance any of you can see a way to make your respective compilers
> > not emit utter junk for this?
> >
> > On Mon, May 04, 2020 at 10:14:45PM +0200, Peter Zijlstra wrote:
> >
> > > https://godbolt.org/z/SDRG2q
> 
> Woah, a godbolt link! Now we're speaking the same language.  What were
> you expecting?

Given the output for x86-64 clang (trunk)

	bar:                                    # @bar
		movl    %edi, .L_x$local(%rip)
		retq
	ponies:                                 # @ponies
		movq    .Lfoo$local(%rip), %rax
		testq   %rax, %rax
		movl    $__static_call_nop, %ecx
		cmovneq %rax, %rcx
		jmpq    *%rcx                   # TAILCALL
	__static_call_nop:                      # @__static_call_nop
		retq
	_x:
	.L_x$local:
		.long   0                       # 0x0

	foo:
	.Lfoo$local:
		.zero   8


I was hoping for:

	bar:                                    # @bar
		movl    %edi, .L_x$local(%rip)
		retq
	ponies:                                 # @ponies
		movq    .Lfoo$local(%rip), %rax
		testq   %rax, %rax
		jz	1f
		jmpq    *%rcx                   # TAILCALL
	1:
		retq

That avoids the indirect call (possible retpoline) and does an immediate
return.

So it does 2 things different:

 - it realizes the NULL case is a constant and uses an
   immediate call and avoids the indirect call/jmp.

 - it realizes __static_call_nop() is a no-op and avoids the call
   entirely and does an immediate return.

> Us to remove the conditional check that a volatile read
> wasn't NULL?

No, obviously the load is required, and the READ_ONCE() is so that the
compiler will not emit 2 different loads (just for giggles).

That is:

	tmp1 = name.func;
	if (!tmp) {
		tmp2 = name.func;
		tmp2(args);
	}

is a valid translation of:

	if (!name.func)
		name.func(args)

and allows for a NULL dereference (as noted by Rasmus).

What I did do want, per the above, is to avoid the indirect (tail) call.
Because indirect jmp/call are evil and expensive.

> I am simultaneously impressed
> and disgusted by this btw, cool stuff.

Yes, it's nasty, esp the casting of a function pointer like that is
gruesome.

Re: [PATCH v4 14/18] static_call: Add static_cond_call()

[Peter Zijlstra]

On Wed, May 06, 2020 at 03:51:28PM +0200, Peter Zijlstra wrote:
> On Tue, May 05, 2020 at 11:13:53AM -0700, Nick Desaulniers wrote:
> > On Tue, May 5, 2020 at 2:36 AM Peter Zijlstra <peterz@infradead.org> wrote:
> > >
> > >
> > > HJ, Nick,
> > >
> > > Any chance any of you can see a way to make your respective compilers
> > > not emit utter junk for this?
> > >
> > > On Mon, May 04, 2020 at 10:14:45PM +0200, Peter Zijlstra wrote:
> > >
> > > > https://godbolt.org/z/SDRG2q
> > 
> > Woah, a godbolt link! Now we're speaking the same language.  What were
> > you expecting?
> 
> Given the output for x86-64 clang (trunk)
> 
> 	bar:                                    # @bar
> 		movl    %edi, .L_x$local(%rip)
> 		retq
> 	ponies:                                 # @ponies
> 		movq    .Lfoo$local(%rip), %rax
> 		testq   %rax, %rax
> 		movl    $__static_call_nop, %ecx
> 		cmovneq %rax, %rcx
> 		jmpq    *%rcx                   # TAILCALL
> 	__static_call_nop:                      # @__static_call_nop
> 		retq
> 	_x:
> 	.L_x$local:
> 		.long   0                       # 0x0
> 
> 	foo:
> 	.Lfoo$local:
> 		.zero   8
> 
> 
> I was hoping for:
> 
> 	bar:                                    # @bar
> 		movl    %edi, .L_x$local(%rip)
> 		retq
> 	ponies:                                 # @ponies
> 		movq    .Lfoo$local(%rip), %rax
> 		testq   %rax, %rax
> 		jz	1f
> 		jmpq    *%rcx                   # TAILCALL

Obviously this then wants to be *%rax.

> 	1:
> 		retq
> 
> That avoids the indirect call (possible retpoline) and does an immediate
> return.
> 
> So it does 2 things different:
> 
>  - it realizes the NULL case is a constant and uses an
>    immediate call and avoids the indirect call/jmp.
> 
>  - it realizes __static_call_nop() is a no-op and avoids the call
>    entirely and does an immediate return.

    IOW, have it inline __static_call_nop().

Re: [PATCH v4 14/18] static_call: Add static_cond_call()

[Linus Torvalds]

On Wed, May 6, 2020 at 6:51 AM Peter Zijlstra <peterz@infradead.org> wrote:
>
> I was hoping for:
>
>         bar:                                    # @bar
>                 movl    %edi, .L_x$local(%rip)
>                 retq
>         ponies:                                 # @ponies
>                 movq    .Lfoo$local(%rip), %rax
>                 testq   %rax, %rax
>                 jz      1f
>                 jmpq    *%rcx                   # TAILCALL
>         1:
>                 retq

If you want to just avoid the 'cmov', the best way to do that is to
insert a barrier() on one side of the if-statement.

That breaks the ability to turn the conditional jump into a cmov.

HOWEVER.

It looks like noth clang and gcc will move the indirect jump to the
conditional sites, but then neither of them is smart enough to just
turn the indirect jump into one direct jump.

Strange. So you still get an indirect call for just the "ret" case.
The code looks actively stupid with

gcc:
  .L7:
        movl    $__static_call_nop, %eax
        jmp     *%rax

clang:
  .LBB1_1:
        mov     eax, offset __static_call_nop
        jmp     rax                     # TAILCALL

despite the barrier not being between those two points. The only
difference is the assembler syntax.

Odd. That's such a trivial and obvious optimization. But presumably
it's a pattern that just doesn't happen normally.

                Linus

Re: [PATCH v4 14/18] static_call: Add static_cond_call()

[Andy Lutomirski]

> On May 6, 2020, at 10:23 AM, Linus Torvalds <torvalds@linux-foundation.org> wrote:
> 
> On Wed, May 6, 2020 at 6:51 AM Peter Zijlstra <peterz@infradead.org> wrote:
>> 
>> I was hoping for:
>> 
>>        bar:                                    # @bar
>>                movl    %edi, .L_x$local(%rip)
>>                retq
>>        ponies:                                 # @ponies
>>                movq    .Lfoo$local(%rip), %rax
>>                testq   %rax, %rax
>>                jz      1f
>>                jmpq    *%rcx                   # TAILCALL
>>        1:
>>                retq
> 
> If you want to just avoid the 'cmov', the best way to do that is to
> insert a barrier() on one side of the if-statement.
> 
> That breaks the ability to turn the conditional jump into a cmov.

Having done this in the past, you can get potentially better code with asm volatile (“”); than with a barrier and its memory clobber. I don’t know if that will make a difference in this particular case.

Re: [PATCH v4 14/18] static_call: Add static_cond_call()

[Josh Poimboeuf]

On Fri, May 01, 2020 at 10:29:03PM +0200, Peter Zijlstra wrote:
> +++ b/arch/x86/include/asm/static_call.h
> @@ -30,4 +30,14 @@
>  	    ".size " STATIC_CALL_TRAMP_STR(name) ", . - " STATIC_CALL_TRAMP_STR(name) " \n" \
>  	    ".popsection					\n")
>  
> +#define ARCH_DEFINE_STATIC_CALL_RETTRAMP(name)				\
> +	asm(".pushsection .static_call.text, \"ax\"		\n"	\
> +	    ".align 4						\n"	\
> +	    ".globl " STATIC_CALL_TRAMP_STR(name) "		\n"	\
> +	    STATIC_CALL_TRAMP_STR(name) ":			\n"	\
> +	    "	ret; nop; nop; nop; nop;			\n"	\
> +	    ".type " STATIC_CALL_TRAMP_STR(name) ", @function	\n"	\
> +	    ".size " STATIC_CALL_TRAMP_STR(name) ", . - " STATIC_CALL_TRAMP_STR(name) " \n" \
> +	    ".popsection					\n")
> +

The boilerplate in these two trampoline macros is identical except for
the actual instructions, maybe there could be a shared
__ARCH_DEFINE_STATIC_CALL_TRAMP(name, insns) macro which does most of
the dirty work.

>  #endif /* _ASM_STATIC_CALL_H */
> --- a/arch/x86/kernel/static_call.c
> +++ b/arch/x86/kernel/static_call.c
> @@ -4,19 +4,41 @@
>  #include <linux/bug.h>
>  #include <asm/text-patching.h>
>  
> -static void __static_call_transform(void *insn, u8 opcode, void *func)
> +enum insn_type {
> +	call = 0, /* site call */
> +	nop = 1,  /* site cond-call */
> +	jmp = 2,  /* tramp / site tail-call */
> +	ret = 3,  /* tramp / site cond-tail-call */
> +};

The lowercase enums threw me for a loop, I thought they were variables a
few times.  Starting a new enum trend? :-)

>  void arch_static_call_transform(void *site, void *tramp, void *func)
> @@ -24,10 +46,10 @@ void arch_static_call_transform(void *si
>  	mutex_lock(&text_mutex);
>  
>  	if (tramp)
> -		__static_call_transform(tramp, JMP32_INSN_OPCODE, func);
> +		__static_call_transform(tramp, jmp + !func, func);
>  
>  	if (IS_ENABLED(CONFIG_HAVE_STATIC_CALL_INLINE) && site)
> -		__static_call_transform(site, CALL_INSN_OPCODE, func);
> +		__static_call_transform(site, !func, func);

Clever enum math, but probably more robust to be ignorant of the values:

	if (tramp)
		__static_call_transform(tramp, func ? jmp : ret, func);

  	if (IS_ENABLED(CONFIG_HAVE_STATIC_CALL_INLINE) && site)
		__static_call_transform(site, func ? call : nop, func);


> +++ b/include/linux/static_call.h
> @@ -16,7 +16,9 @@
>   *
>   *   DECLARE_STATIC_CALL(name, func);
>   *   DEFINE_STATIC_CALL(name, func);
> + *   DEFINE_STATIC_COND_CALL(name, typename);
>   *   static_call(name)(args...);
> + *   static_cond_call(name)(args...)
>   *   static_call_update(name, func);

Missing semicolon, also an updated description/example would be useful.

On that note, what do you think about tweaking the naming from

  DEFINE_STATIC_COND_CALL(name, typename);
  static_cond_call(name)(args...);

to

  DEFINE_STATIC_CALL_NO_FUNC(name, typename);
  static_call_if_func(name)(args...);

?

Seems clearer to me.  They're still STATIC_CALLs, so it seems logical to
keep those two words together.  And NO_FUNC clarifies the initialized
value.

Similarly RETTRAMP could be ARCH_DEFINE_STATIC_CALL_NO_FUNC.

-- 
Josh

Re: [PATCH v4 14/18] static_call: Add static_cond_call()

[Peter Zijlstra]

On Wed, May 06, 2020 at 12:24:55PM -0500, Josh Poimboeuf wrote:
> On Fri, May 01, 2020 at 10:29:03PM +0200, Peter Zijlstra wrote:
> > +++ b/arch/x86/include/asm/static_call.h
> > @@ -30,4 +30,14 @@
> >  	    ".size " STATIC_CALL_TRAMP_STR(name) ", . - " STATIC_CALL_TRAMP_STR(name) " \n" \
> >  	    ".popsection					\n")
> >  
> > +#define ARCH_DEFINE_STATIC_CALL_RETTRAMP(name)				\
> > +	asm(".pushsection .static_call.text, \"ax\"		\n"	\
> > +	    ".align 4						\n"	\
> > +	    ".globl " STATIC_CALL_TRAMP_STR(name) "		\n"	\
> > +	    STATIC_CALL_TRAMP_STR(name) ":			\n"	\
> > +	    "	ret; nop; nop; nop; nop;			\n"	\
> > +	    ".type " STATIC_CALL_TRAMP_STR(name) ", @function	\n"	\
> > +	    ".size " STATIC_CALL_TRAMP_STR(name) ", . - " STATIC_CALL_TRAMP_STR(name) " \n" \
> > +	    ".popsection					\n")
> > +
> 
> The boilerplate in these two trampoline macros is identical except for
> the actual instructions, maybe there could be a shared
> __ARCH_DEFINE_STATIC_CALL_TRAMP(name, insns) macro which does most of
> the dirty work.

I'm afraid that'll just make it less readable :/

> >  #endif /* _ASM_STATIC_CALL_H */
> > --- a/arch/x86/kernel/static_call.c
> > +++ b/arch/x86/kernel/static_call.c
> > @@ -4,19 +4,41 @@
> >  #include <linux/bug.h>
> >  #include <asm/text-patching.h>
> >  
> > -static void __static_call_transform(void *insn, u8 opcode, void *func)
> > +enum insn_type {
> > +	call = 0, /* site call */
> > +	nop = 1,  /* site cond-call */
> > +	jmp = 2,  /* tramp / site tail-call */
> > +	ret = 3,  /* tramp / site cond-tail-call */
> > +};
> 
> The lowercase enums threw me for a loop, I thought they were variables a
> few times.  Starting a new enum trend? :-)

I can UPPERCASE them I suppose, not sure where this came from.

> >  void arch_static_call_transform(void *site, void *tramp, void *func)
> > @@ -24,10 +46,10 @@ void arch_static_call_transform(void *si
> >  	mutex_lock(&text_mutex);
> >  
> >  	if (tramp)
> > -		__static_call_transform(tramp, JMP32_INSN_OPCODE, func);
> > +		__static_call_transform(tramp, jmp + !func, func);
> >  
> >  	if (IS_ENABLED(CONFIG_HAVE_STATIC_CALL_INLINE) && site)
> > -		__static_call_transform(site, CALL_INSN_OPCODE, func);
> > +		__static_call_transform(site, !func, func);
> 
> Clever enum math, but probably more robust to be ignorant of the values:
> 
> 	if (tramp)
> 		__static_call_transform(tramp, func ? jmp : ret, func);
> 
>   	if (IS_ENABLED(CONFIG_HAVE_STATIC_CALL_INLINE) && site)
> 		__static_call_transform(site, func ? call : nop, func);
> 

That is more readable, and I checked, GCC is clever enough to not
actually emit branches for that, so w00t.

> > +++ b/include/linux/static_call.h
> > @@ -16,7 +16,9 @@
> >   *
> >   *   DECLARE_STATIC_CALL(name, func);
> >   *   DEFINE_STATIC_CALL(name, func);
> > + *   DEFINE_STATIC_COND_CALL(name, typename);
> >   *   static_call(name)(args...);
> > + *   static_cond_call(name)(args...)
> >   *   static_call_update(name, func);
> 
> Missing semicolon, also an updated description/example would be useful.

Yes, I already promised Rasmus more documentation.

> On that note, what do you think about tweaking the naming from
> 
>   DEFINE_STATIC_COND_CALL(name, typename);
>   static_cond_call(name)(args...);
> 
> to
> 
>   DEFINE_STATIC_CALL_NO_FUNC(name, typename);
>   static_call_if_func(name)(args...);
> 
> ?
> 
> Seems clearer to me.  They're still STATIC_CALLs, so it seems logical to
> keep those two words together.  And NO_FUNC clarifies the initialized
> value.
> 
> Similarly RETTRAMP could be ARCH_DEFINE_STATIC_CALL_NO_FUNC.

What can I say, I'm sorta used to the old naming by now, but sure, any
other opinions before I edit things?

Re: [PATCH v4 14/18] static_call: Add static_cond_call()

[Josh Poimboeuf]

On Wed, May 06, 2020 at 07:58:52PM +0200, Peter Zijlstra wrote:
> On Wed, May 06, 2020 at 12:24:55PM -0500, Josh Poimboeuf wrote:
> > On Fri, May 01, 2020 at 10:29:03PM +0200, Peter Zijlstra wrote:
> > > +++ b/arch/x86/include/asm/static_call.h
> > > @@ -30,4 +30,14 @@
> > >  	    ".size " STATIC_CALL_TRAMP_STR(name) ", . - " STATIC_CALL_TRAMP_STR(name) " \n" \
> > >  	    ".popsection					\n")
> > >  
> > > +#define ARCH_DEFINE_STATIC_CALL_RETTRAMP(name)				\
> > > +	asm(".pushsection .static_call.text, \"ax\"		\n"	\
> > > +	    ".align 4						\n"	\
> > > +	    ".globl " STATIC_CALL_TRAMP_STR(name) "		\n"	\
> > > +	    STATIC_CALL_TRAMP_STR(name) ":			\n"	\
> > > +	    "	ret; nop; nop; nop; nop;			\n"	\
> > > +	    ".type " STATIC_CALL_TRAMP_STR(name) ", @function	\n"	\
> > > +	    ".size " STATIC_CALL_TRAMP_STR(name) ", . - " STATIC_CALL_TRAMP_STR(name) " \n" \
> > > +	    ".popsection					\n")
> > > +
> > 
> > The boilerplate in these two trampoline macros is identical except for
> > the actual instructions, maybe there could be a shared
> > __ARCH_DEFINE_STATIC_CALL_TRAMP(name, insns) macro which does most of
> > the dirty work.
> 
> I'm afraid that'll just make it less readable :/

#define __ARCH_DEFINE_STATIC_CALL_TRAMP(name, insns)			\
	asm(".pushsection .static_call.text, \"ax\"		\n"	\
	    ".align 4						\n"	\
	    ".globl " STATIC_CALL_TRAMP_STR(name) "		\n"	\
	    STATIC_CALL_TRAMP_STR(name) ":			\n"	\
	    insns "						\n"	\
	    ".type " STATIC_CALL_TRAMP_STR(name) ", @function	\n"	\
	    ".size " STATIC_CALL_TRAMP_STR(name) ", . - " STATIC_CALL_TRAMP_STR(name) " \n" \
	    ".popsection					\n")

#define ARCH_DEFINE_STATIC_CALL_TRAMP(name, func)			\
	__ARCH_DEFINE_STATIC_CALL_TRAMP(name, "jmp.d32 " # func)

#define ARCH_DEFINE_STATIC_CALL_RETTRAMP(name, func)			\
	__ARCH_DEFINE_STATIC_CALL_TRAMP(name, "ret; nop; nop; nop; nop")

I like it.  Makes it easy to see the differences between the tramps.

> > >  #endif /* _ASM_STATIC_CALL_H */
> > > --- a/arch/x86/kernel/static_call.c
> > > +++ b/arch/x86/kernel/static_call.c
> > > @@ -4,19 +4,41 @@
> > >  #include <linux/bug.h>
> > >  #include <asm/text-patching.h>
> > >  
> > > -static void __static_call_transform(void *insn, u8 opcode, void *func)
> > > +enum insn_type {
> > > +	call = 0, /* site call */
> > > +	nop = 1,  /* site cond-call */
> > > +	jmp = 2,  /* tramp / site tail-call */
> > > +	ret = 3,  /* tramp / site cond-tail-call */
> > > +};
> > 
> > The lowercase enums threw me for a loop, I thought they were variables a
> > few times.  Starting a new enum trend? :-)
> 
> I can UPPERCASE them I suppose, not sure where this came from.

Just thought UPPERCASE was the standard... lowercase looks confusingly
like variables when referenced.

-- 
Josh

Re: [PATCH v4 14/18] static_call: Add static_cond_call()

[Peter Zijlstra]

On Wed, May 06, 2020 at 01:09:24PM -0500, Josh Poimboeuf wrote:

> #define __ARCH_DEFINE_STATIC_CALL_TRAMP(name, insns)			\
> 	asm(".pushsection .static_call.text, \"ax\"		\n"	\
> 	    ".align 4						\n"	\
> 	    ".globl " STATIC_CALL_TRAMP_STR(name) "		\n"	\
> 	    STATIC_CALL_TRAMP_STR(name) ":			\n"	\
> 	    insns "						\n"	\
> 	    ".type " STATIC_CALL_TRAMP_STR(name) ", @function	\n"	\
> 	    ".size " STATIC_CALL_TRAMP_STR(name) ", . - " STATIC_CALL_TRAMP_STR(name) " \n" \
> 	    ".popsection					\n")
> 
> #define ARCH_DEFINE_STATIC_CALL_TRAMP(name, func)			\
> 	__ARCH_DEFINE_STATIC_CALL_TRAMP(name, "jmp.d32 " # func)

Note that this one is now:

	.byte 0xe9; .long #func - (. + 4);

due to clang not actually understanding jmp.d32 :-(

> #define ARCH_DEFINE_STATIC_CALL_RETTRAMP(name, func)			\
> 	__ARCH_DEFINE_STATIC_CALL_TRAMP(name, "ret; nop; nop; nop; nop")
> 
> I like it.  Makes it easy to see the differences between the tramps.

OK, ok.. changed :-)

Re: [PATCH v4 14/18] static_call: Add static_cond_call()

[Peter Zijlstra]

On Wed, May 06, 2020 at 12:24:55PM -0500, Josh Poimboeuf wrote:

> On that note, what do you think about tweaking the naming from
> 
>   DEFINE_STATIC_COND_CALL(name, typename);
>   static_cond_call(name)(args...);
> 
> to
> 
>   DEFINE_STATIC_CALL_NO_FUNC(name, typename);
>   static_call_if_func(name)(args...);
> 
> ?
> 
> Seems clearer to me.  They're still STATIC_CALLs, so it seems logical to
> keep those two words together.  And NO_FUNC clarifies the initialized
> value.
> 
> Similarly RETTRAMP could be ARCH_DEFINE_STATIC_CALL_NO_FUNC.

So I dislike static_call_if_func(), that's so much typing. Also, I
prefer ARCH_*_RETTRAMP as it clearly describes what the thing is.

How is something like this? 

---
--- a/include/linux/static_call.h
+++ b/include/linux/static_call.h
@@ -16,7 +16,7 @@
  *
  *   DECLARE_STATIC_CALL(name, func);
  *   DEFINE_STATIC_CALL(name, func);
- *   DEFINE_STATIC_COND_CALL(name, typename);
+ *   DEFINE_STATIC_CALL_NULL(name, typename);
  *   static_call(name)(args...);
  *   static_cond_call(name)(args...);
  *   static_call_update(name, func);
@@ -54,6 +54,43 @@
  *   rather than calling through the trampoline.  This requires objtool or a
  *   compiler plugin to detect all the static_call() sites and annotate them
  *   in the .static_call_sites section.
+ *
+ *
+ * Notes on NULL function pointers:
+ *
+ *   Static_call()s support NULL functions, with many of the caveats that
+ *   regular function pointers have.
+ *
+ *   Clearly calling a NULL function pointer is 'BAD', so too for
+ *   static_call()s (although when HAVE_STATIC_CALL it might not be immediately
+ *   fatal). A NULL static_call can be the result of:
+ *
+ *     DECLARE_STATIC_CALL_NULL(my_static_call, void (*)(int));
+ *
+ *   which is equivalent to declaring a NULL function pointer with just a
+ *   typename:
+ *
+ *     void (*my_func_ptr)(int arg1) = NULL;
+ *
+ *   or using static_call_update() with a NULL function. In both cases the
+ *   HAVE_STATIC_CALL implementation will patch the trampoline with a RET
+ *   instruction, instead of an immediate tail-call JMP. HAVE_STATIC_CALL_INLINE
+ *   architectures can patch the trampoline call to a NOP.
+ *
+ *   In all cases, any argument evaluation is unconditional. Unlike a regular
+ *   conditional function pointer call:
+ *
+ *     if (my_func_ptr)
+ *         my_func_ptr(arg1)
+ *
+ *   where the argument evaludation also depends on the pointer value.
+ *
+ *   When calling a static_call that can be NULL, use:
+ *
+ *     static_cond_call(name)(arg1);
+ *
+ *   which will include the required value tests to avoid NULL-pointer
+ *   dereferences.
  */
 
 #include <linux/types.h>
@@ -122,7 +159,7 @@ extern int static_call_text_reserved(voi
 	};								\
 	ARCH_DEFINE_STATIC_CALL_TRAMP(name, _func)
 
-#define DEFINE_STATIC_COND_CALL(name, _func)				\
+#define DEFINE_STATIC_CALL_NULL(name, _func)				\
 	DECLARE_STATIC_CALL(name, _func);				\
 	struct static_call_key STATIC_CALL_KEY(name) = {		\
 		.func = NULL,						\
@@ -154,7 +191,7 @@ struct static_call_key {
 	};								\
 	ARCH_DEFINE_STATIC_CALL_TRAMP(name, _func)
 
-#define DEFINE_STATIC_COND_CALL(name, _func)				\
+#define DEFINE_STATIC_CALL_NULL(name, _func)				\
 	DECLARE_STATIC_CALL(name, _func);				\
 	struct static_call_key STATIC_CALL_KEY(name) = {		\
 		.func = NULL,						\
@@ -198,7 +235,7 @@ struct static_call_key {
 		.func = _func,						\
 	}
 
-#define DEFINE_STATIC_COND_CALL(name, _func)				\
+#define DEFINE_STATIC_CALL_NULL(name, _func)				\
 	DECLARE_STATIC_CALL(name, _func);				\
 	struct static_call_key STATIC_CALL_KEY(name) = {		\
 		.func = NULL,						\

Re: [PATCH v4 14/18] static_call: Add static_cond_call()

[Josh Poimboeuf]

On Fri, May 08, 2020 at 05:27:30PM +0200, Peter Zijlstra wrote:
> On Wed, May 06, 2020 at 12:24:55PM -0500, Josh Poimboeuf wrote:
> 
> > On that note, what do you think about tweaking the naming from
> > 
> >   DEFINE_STATIC_COND_CALL(name, typename);
> >   static_cond_call(name)(args...);
> > 
> > to
> > 
> >   DEFINE_STATIC_CALL_NO_FUNC(name, typename);
> >   static_call_if_func(name)(args...);
> > 
> > ?
> > 
> > Seems clearer to me.  They're still STATIC_CALLs, so it seems logical to
> > keep those two words together.  And NO_FUNC clarifies the initialized
> > value.
> > 
> > Similarly RETTRAMP could be ARCH_DEFINE_STATIC_CALL_NO_FUNC.
> 
> So I dislike static_call_if_func(), that's so much typing. Also, I
> prefer ARCH_*_RETTRAMP as it clearly describes what the thing is.
> 
> How is something like this? 

I like DEFINE_STATIC_CALL_NULL.  I also like the new comment.

And if you're calling it

  DEFINE_STATIC_CALL_NULL

then it seems like

  ARCH_DEFINE_STATIC_CALL_NULL

would be the logical name rather than RETTRAMP?

Still not crazy about static_cond_call(), though I think at least
changing it to static_call_cond() would be better for namespacing
reasons.

-- 
Josh

Re: [PATCH v4 14/18] static_call: Add static_cond_call()

[Peter Zijlstra]

On Fri, May 08, 2020 at 10:47:04AM -0500, Josh Poimboeuf wrote:

> And if you're calling it
> 
>   DEFINE_STATIC_CALL_NULL
> 
> then it seems like
> 
>   ARCH_DEFINE_STATIC_CALL_NULL
> 
> would be the logical name rather than RETTRAMP?

But that looses the TRAMP, and ARCH_DEFINE_STATIC_CALL_NULL_TRAMP so
damn long, then again, it's only 2 chars more than what I have now,
sure, lets do it.

> Still not crazy about static_cond_call(), though I think at least
> changing it to static_call_cond() would be better for namespacing
> reasons.

Done.

[PATCH v4 15/18] static_call: Handle tail-calls

[Peter Zijlstra]

GCC can turn our static_call(name)(args...) into a tail call, in which
case we get a JMP.d32 into the trampoline (which then does a further
tail-call).

Teach objtool to recognise and mark these in .static_call_sites and
adjust the code patching to deal with this.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
---
 arch/x86/kernel/static_call.c           |    4 ++--
 include/linux/static_call.h             |    4 ++--
 include/linux/static_call_types.h       |    7 +++++++
 kernel/static_call.c                    |   21 +++++++++++++--------
 tools/include/linux/static_call_types.h |    7 +++++++
 tools/objtool/check.c                   |   18 +++++++++++++-----
 6 files changed, 44 insertions(+), 17 deletions(-)

--- a/arch/x86/kernel/static_call.c
+++ b/arch/x86/kernel/static_call.c
@@ -41,7 +41,7 @@ static void __static_call_transform(void
 	text_poke_bp(insn, code, size, NULL);
 }
 
-void arch_static_call_transform(void *site, void *tramp, void *func)
+void arch_static_call_transform(void *site, void *tramp, void *func, bool tail)
 {
 	mutex_lock(&text_mutex);
 
@@ -49,7 +49,7 @@ void arch_static_call_transform(void *si
 		__static_call_transform(tramp, jmp + !func, func);
 
 	if (IS_ENABLED(CONFIG_HAVE_STATIC_CALL_INLINE) && site)
-		__static_call_transform(site, !func, func);
+		__static_call_transform(site, 2*tail + !func, func);
 
 	mutex_unlock(&text_mutex);
 }
--- a/include/linux/static_call.h
+++ b/include/linux/static_call.h
@@ -65,7 +65,7 @@
 /*
  * Either @site or @tramp can be NULL.
  */
-extern void arch_static_call_transform(void *site, void *tramp, void *func);
+extern void arch_static_call_transform(void *site, void *tramp, void *func, bool tail);
 
 #define STATIC_CALL_TRAMP_ADDR(name) &STATIC_CALL_TRAMP(name)
 
@@ -161,7 +161,7 @@ void __static_call_update(struct static_
 {
 	cpus_read_lock();
 	WRITE_ONCE(key->func, func);
-	arch_static_call_transform(NULL, tramp, func);
+	arch_static_call_transform(NULL, tramp, func, false);
 	cpus_read_unlock();
 }
 
--- a/include/linux/static_call_types.h
+++ b/include/linux/static_call_types.h
@@ -17,6 +17,13 @@
 #define STATIC_CALL_TRAMP_STR(name)	__stringify(STATIC_CALL_TRAMP(name))
 
 /*
+ * Flags in the low bits of static_call_site::key.
+ */
+#define STATIC_CALL_SITE_TAIL 1UL	/* tail call */
+#define STATIC_CALL_SITE_INIT 2UL	/* init section */
+#define STATIC_CALL_SITE_FLAGS 3UL
+
+/*
  * The static call site table needs to be created by external tooling (objtool
  * or a compiler plugin).
  */
--- a/kernel/static_call.c
+++ b/kernel/static_call.c
@@ -15,8 +15,6 @@ extern struct static_call_site __start_s
 
 static bool static_call_initialized;
 
-#define STATIC_CALL_INIT 1UL
-
 /* mutex to protect key modules/sites */
 static DEFINE_MUTEX(static_call_mutex);
 
@@ -39,18 +37,23 @@ static inline void *static_call_addr(str
 static inline struct static_call_key *static_call_key(const struct static_call_site *site)
 {
 	return (struct static_call_key *)
-		(((long)site->key + (long)&site->key) & ~STATIC_CALL_INIT);
+		(((long)site->key + (long)&site->key) & ~STATIC_CALL_SITE_FLAGS);
 }
 
 /* These assume the key is word-aligned. */
 static inline bool static_call_is_init(struct static_call_site *site)
 {
-	return ((long)site->key + (long)&site->key) & STATIC_CALL_INIT;
+	return ((long)site->key + (long)&site->key) & STATIC_CALL_SITE_INIT;
+}
+
+static inline bool static_call_is_tail(struct static_call_site *site)
+{
+	return ((long)site->key + (long)&site->key) & STATIC_CALL_SITE_TAIL;
 }
 
 static inline void static_call_set_init(struct static_call_site *site)
 {
-	site->key = ((long)static_call_key(site) | STATIC_CALL_INIT) -
+	site->key = ((long)static_call_key(site) | STATIC_CALL_SITE_INIT) -
 		    (long)&site->key;
 }
 
@@ -104,7 +107,7 @@ void __static_call_update(struct static_
 
 	key->func = func;
 
-	arch_static_call_transform(NULL, tramp, func);
+	arch_static_call_transform(NULL, tramp, func, false);
 
 	/*
 	 * If uninitialized, we'll not update the callsites, but they still
@@ -153,7 +156,8 @@ void __static_call_update(struct static_
 				continue;
 			}
 
-			arch_static_call_transform(site_addr, NULL, func);
+			arch_static_call_transform(site_addr, NULL, func,
+				static_call_is_tail(site));
 		}
 	}
 
@@ -197,7 +201,8 @@ static int __static_call_init(struct mod
 			key->next = site_mod;
 		}
 
-		arch_static_call_transform(site_addr, NULL, key->func);
+		arch_static_call_transform(site_addr, NULL, key->func,
+				static_call_is_tail(site));
 	}
 
 	return 0;
--- a/tools/include/linux/static_call_types.h
+++ b/tools/include/linux/static_call_types.h
@@ -17,6 +17,13 @@
 #define STATIC_CALL_TRAMP_STR(name)	__stringify(STATIC_CALL_TRAMP(name))
 
 /*
+ * Flags in the low bits of static_call_site::key.
+ */
+#define STATIC_CALL_SITE_TAIL 1UL	/* tail call */
+#define STATIC_CALL_SITE_INIT 2UL	/* init section */
+#define STATIC_CALL_SITE_FLAGS 3UL
+
+/*
  * The static call site table needs to be created by external tooling (objtool
  * or a compiler plugin).
  */
--- a/tools/objtool/check.c
+++ b/tools/objtool/check.c
@@ -502,7 +502,7 @@ static int create_static_call_sections(s
 		}
 		memset(rela, 0, sizeof(*rela));
 		rela->sym = key_sym;
-		rela->addend = 0;
+		rela->addend = is_sibling_call(insn) ? STATIC_CALL_SITE_TAIL : 0;
 		rela->type = R_X86_64_PC32;
 		rela->offset = idx * sizeof(struct static_call_site) + 4;
 		rela->sec = rela_sec;
@@ -728,6 +728,10 @@ static int add_jump_destinations(struct
 		} else {
 			/* external sibling call */
 			insn->call_dest = rela->sym;
+			if (insn->call_dest->static_call_tramp) {
+				list_add_tail(&insn->static_call_node,
+					      &file->static_call_list);
+			}
 			continue;
 		}
 
@@ -779,6 +783,10 @@ static int add_jump_destinations(struct
 
 				/* internal sibling call */
 				insn->call_dest = insn->jump_dest->func;
+				if (insn->call_dest->static_call_tramp) {
+					list_add_tail(&insn->static_call_node,
+						      &file->static_call_list);
+				}
 			}
 		}
 	}
@@ -1630,6 +1638,10 @@ static int decode_sections(struct objtoo
 	if (ret)
 		return ret;
 
+	ret = read_static_call_tramps(file);
+	if (ret)
+		return ret;
+
 	ret = add_jump_destinations(file);
 	if (ret)
 		return ret;
@@ -1662,10 +1674,6 @@ static int decode_sections(struct objtoo
 	if (ret)
 		return ret;
 
-	ret = read_static_call_tramps(file);
-	if (ret)
-		return ret;
-
 	return 0;
 }
 

Re: [PATCH v4 15/18] static_call: Handle tail-calls

[Peter Zijlstra]

On Fri, May 01, 2020 at 10:29:04PM +0200, Peter Zijlstra wrote:
>  	if (IS_ENABLED(CONFIG_HAVE_STATIC_CALL_INLINE) && site)
> -		__static_call_transform(site, !func, func);
> +		__static_call_transform(site, 2*tail + !func, func);

I'm having trouble making that more readable though... that !func can be
exanded like proposed in 14 without code-gen changes, but:

	__static_call_transform(site, tail ? (func ? JMP : RET)
					   : (func ? CALL : NOP), func);

generates a right old mess.

[PATCH v4 16/18] static_call: Allow early init

[Peter Zijlstra]

In order to use static_call() to wire up x86_pmu, we need to
initialize earlier; copy some of the tricks from jump_label to enable
this.

Primarily we overload key->next to store a sites pointer when there
are no modules, this avoids having to use kmalloc() to initialize the
sites and allows us to run much earlier.

(arguably, this is much much earlier than needed for perf, but it
might allow other uses.)

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
---
 arch/x86/kernel/setup.c       |    2 +
 arch/x86/kernel/static_call.c |    8 +++++-
 include/linux/static_call.h   |   15 ++++++++++--
 kernel/static_call.c          |   52 +++++++++++++++++++++++++++++++++++++++---
 4 files changed, 71 insertions(+), 6 deletions(-)

--- a/arch/x86/kernel/setup.c
+++ b/arch/x86/kernel/setup.c
@@ -19,6 +19,7 @@
 #include <linux/hugetlb.h>
 #include <linux/tboot.h>
 #include <linux/usb/xhci-dbgp.h>
+#include <linux/static_call.h>
 
 #include <uapi/linux/mount.h>
 
@@ -842,6 +843,7 @@ void __init setup_arch(char **cmdline_p)
 	early_cpu_init();
 	arch_init_ideal_nops();
 	jump_label_init();
+	static_call_init();
 	early_ioremap_init();
 
 	setup_olpc_ofw_pgd();
--- a/arch/x86/kernel/static_call.c
+++ b/arch/x86/kernel/static_call.c
@@ -11,7 +11,7 @@ enum insn_type {
 	ret = 3,  /* tramp / site cond-tail-call */
 };
 
-static void __static_call_transform(void *insn, enum insn_type type, void *func)
+static void __ref __static_call_transform(void *insn, enum insn_type type, void *func)
 {
 	int size = CALL_INSN_SIZE;
 	const void *code;
@@ -33,11 +33,17 @@ static void __static_call_transform(void
 		code = text_gen_insn(RET_INSN_OPCODE, insn, func);
 		size = RET_INSN_SIZE;
 		break;
+
+	default: /* GCC is a moron -- it figures @code can be uninitialized below */
+		BUG();
 	}
 
 	if (memcmp(insn, code, size) == 0)
 		return;
 
+	if (unlikely(system_state == SYSTEM_BOOTING))
+		return text_poke_early(insn, code, size);
+
 	text_poke_bp(insn, code, size, NULL);
 }
 
--- a/include/linux/static_call.h
+++ b/include/linux/static_call.h
@@ -85,6 +85,8 @@ extern void arch_static_call_transform(v
 
 #ifdef CONFIG_HAVE_STATIC_CALL_INLINE
 
+extern void __init static_call_init(void);
+
 struct static_call_mod {
 	struct static_call_mod *next;
 	struct module *mod; /* for vmlinux, mod == NULL */
@@ -93,7 +95,12 @@ struct static_call_mod {
 
 struct static_call_key {
 	void *func;
-	struct static_call_mod *next;
+	union {
+		/* bit0 => 0 - next, 1 - sites */
+		unsigned long type;
+		struct static_call_mod *next;
+		struct static_call_site *sites;
+	};
 };
 
 extern void __static_call_update(struct static_call_key *key, void *tramp, void *func);
@@ -104,7 +111,7 @@ extern int static_call_text_reserved(voi
 	DECLARE_STATIC_CALL(name, _func);				\
 	struct static_call_key STATIC_CALL_KEY(name) = {		\
 		.func = _func,						\
-		.next = NULL,						\
+		.type = 1,						\
 	};								\
 	ARCH_DEFINE_STATIC_CALL_TRAMP(name, _func)
 
@@ -129,6 +136,8 @@ extern int static_call_text_reserved(voi
 
 #elif defined(CONFIG_HAVE_STATIC_CALL)
 
+static inline void static_call_init(void) { }
+
 struct static_call_key {
 	void *func;
 };
@@ -169,6 +178,8 @@ static inline int static_call_text_reser
 
 #else /* Generic implementation */
 
+static inline void static_call_init(void) { }
+
 struct static_call_key {
 	void *func;
 };
--- a/kernel/static_call.c
+++ b/kernel/static_call.c
@@ -94,10 +94,31 @@ static inline void static_call_sort_entr
 	     static_call_site_cmp, static_call_site_swap);
 }
 
+static inline bool static_call_key_has_next(struct static_call_key *key)
+{
+	return !(key->type & 1);
+}
+
+static inline struct static_call_mod *static_call_key_next(struct static_call_key *key)
+{
+	if (static_call_key_has_next(key))
+		return key->next->next;
+
+	return NULL;
+}
+
+static inline struct static_call_site *static_call_key_sites(struct static_call_key *key)
+{
+	if (static_call_key_has_next(key))
+		return key->next->sites;
+
+	return (struct static_call_site *)(key->type & ~1);
+}
+
 void __static_call_update(struct static_call_key *key, void *tramp, void *func)
 {
 	struct static_call_site *site, *stop;
-	struct static_call_mod *site_mod;
+	struct static_call_mod *site_mod, first;
 
 	cpus_read_lock();
 	static_call_lock();
@@ -116,7 +137,13 @@ void __static_call_update(struct static_
 	if (WARN_ON_ONCE(!static_call_initialized))
 		goto done;
 
-	for (site_mod = key->next; site_mod; site_mod = site_mod->next) {
+	first = (struct static_call_mod){
+		.next = static_call_key_next(key),
+		.mod = NULL,
+		.sites = static_call_key_sites(key),
+	};
+
+	for (site_mod = &first; site_mod; site_mod = site_mod->next) {
 		if (!site_mod->sites) {
 			/*
 			 * This can happen if the static call key is defined in
@@ -191,16 +218,35 @@ static int __static_call_init(struct mod
 		if (key != prev_key) {
 			prev_key = key;
 
+			if (!mod) {
+				key->sites = site;
+				key->type |= 1;
+				goto do_transform;
+			}
+
 			site_mod = kzalloc(sizeof(*site_mod), GFP_KERNEL);
 			if (!site_mod)
 				return -ENOMEM;
 
+			if (!static_call_key_has_next(key)) {
+				site_mod->mod = NULL;
+				site_mod->next = NULL;
+				site_mod->sites = static_call_key_sites(key);
+
+				key->next = site_mod;
+
+				site_mod = kzalloc(sizeof(*site_mod), GFP_KERNEL);
+				if (!site_mod)
+					return -ENOMEM;
+			}
+
 			site_mod->mod = mod;
 			site_mod->sites = site;
 			site_mod->next = key->next;
 			key->next = site_mod;
 		}
 
+do_transform:
 		arch_static_call_transform(site_addr, NULL, key->func,
 				static_call_is_tail(site));
 	}
@@ -343,7 +389,7 @@ int static_call_text_reserved(void *star
 	return ret;
 }
 
-static void __init static_call_init(void)
+void __init static_call_init(void)
 {
 	int ret;
 

Re: [PATCH v4 16/18] static_call: Allow early init

[Josh Poimboeuf]

On Fri, May 01, 2020 at 10:29:05PM +0200, Peter Zijlstra wrote:
> In order to use static_call() to wire up x86_pmu, we need to
> initialize earlier; copy some of the tricks from jump_label to enable
> this.
> 
> Primarily we overload key->next to store a sites pointer when there
> are no modules, this avoids having to use kmalloc() to initialize the
> sites and allows us to run much earlier.
> 
> (arguably, this is much much earlier than needed for perf, but it
> might allow other uses.)
> 
> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
> ---
>  arch/x86/kernel/setup.c       |    2 +
>  arch/x86/kernel/static_call.c |    8 +++++-
>  include/linux/static_call.h   |   15 ++++++++++--
>  kernel/static_call.c          |   52 +++++++++++++++++++++++++++++++++++++++---
>  4 files changed, 71 insertions(+), 6 deletions(-)

This doesn't work when the key is defined in a module.  In
__static_call_update(), first.site_mod->mod is NULL, but
static_call_key_sites() points to the module's call sites.

This seems to fix it (sorry, also has the 'next' -> 'mods' rename).
The actual fix is in static_call_key_sites() and static_call_key_mods().

diff --git a/include/linux/static_call.h b/include/linux/static_call.h
index e112553cfce6..ee55075707f1 100644
--- a/include/linux/static_call.h
+++ b/include/linux/static_call.h
@@ -110,9 +110,10 @@ struct static_call_mod {
 struct static_call_key {
 	void *func;
 	union {
-		/* bit0 => 0 - next, 1 - sites */
+		/* bit 0: 0 = mods; 1 = sites */
 		unsigned long type;
-		struct static_call_mod *next;
+
+		struct static_call_mod *mods;
 		struct static_call_site *sites;
 	};
 };
diff --git a/kernel/static_call.c b/kernel/static_call.c
index 783953db28c4..d78e50c5b8a3 100644
--- a/kernel/static_call.c
+++ b/kernel/static_call.c
@@ -94,23 +94,23 @@ static inline void static_call_sort_entries(struct static_call_site *start,
 	     static_call_site_cmp, static_call_site_swap);
 }
 
-static inline bool static_call_key_has_next(struct static_call_key *key)
+static inline bool static_call_key_has_mods(struct static_call_key *key)
 {
 	return !(key->type & 1);
 }
 
-static inline struct static_call_mod *static_call_key_next(struct static_call_key *key)
+static inline struct static_call_mod *static_call_key_mods(struct static_call_key *key)
 {
-	if (static_call_key_has_next(key))
-		return key->next->next;
+	if (!static_call_key_has_mods(key))
+		return NULL;
 
-	return NULL;
+	return key->mods;
 }
 
 static inline struct static_call_site *static_call_key_sites(struct static_call_key *key)
 {
-	if (static_call_key_has_next(key))
-		return key->next->sites;
+	if (static_call_key_has_mods(key))
+		return NULL;
 
 	return (struct static_call_site *)(key->type & ~1);
 }
@@ -118,7 +118,12 @@ static inline struct static_call_site *static_call_key_sites(struct static_call_
 void __static_call_update(struct static_call_key *key, void *tramp, void *func)
 {
 	struct static_call_site *site, *stop;
-	struct static_call_mod *site_mod, first;
+	struct static_call_mod *site_mod;
+	struct static_call_mod first = {
+		.next = static_call_key_mods(key),
+		.mod = NULL,
+		.sites = static_call_key_sites(key),
+	};
 
 	cpus_read_lock();
 	static_call_lock();
@@ -137,17 +142,14 @@ void __static_call_update(struct static_call_key *key, void *tramp, void *func)
 	if (WARN_ON_ONCE(!static_call_initialized))
 		goto done;
 
-	first = (struct static_call_mod){
-		.next = static_call_key_next(key),
-		.mod = NULL,
-		.sites = static_call_key_sites(key),
-	};
-
 	for (site_mod = &first; site_mod; site_mod = site_mod->next) {
 		if (!site_mod->sites) {
 			/*
 			 * This can happen if the static call key is defined in
 			 * a module which doesn't use it.
+			 *
+			 * It also happens in the has_mods case, where the
+			 * 'first' entry has no sites associated with it.
 			 */
 			continue;
 		}
@@ -228,12 +230,12 @@ static int __static_call_init(struct module *mod,
 			if (!site_mod)
 				return -ENOMEM;
 
-			if (!static_call_key_has_next(key)) {
+			if (!static_call_key_has_mods(key)) {
 				site_mod->mod = NULL;
 				site_mod->next = NULL;
 				site_mod->sites = static_call_key_sites(key);
 
-				key->next = site_mod;
+				key->mods = site_mod;
 
 				site_mod = kzalloc(sizeof(*site_mod), GFP_KERNEL);
 				if (!site_mod)
@@ -242,8 +244,8 @@ static int __static_call_init(struct module *mod,
 
 			site_mod->mod = mod;
 			site_mod->sites = site;
-			site_mod->next = key->next;
-			key->next = site_mod;
+			site_mod->next = key->mods;
+			key->mods = site_mod;
 		}
 
 do_transform:
@@ -328,7 +330,7 @@ static void static_call_del_module(struct module *mod)
 
 		prev_key = key;
 
-		for (prev = &key->next, site_mod = key->next;
+		for (prev = &key->mods, site_mod = key->mods;
 		     site_mod && site_mod->mod != mod;
 		     prev = &site_mod->next, site_mod = site_mod->next)
 			;

Re: [PATCH v4 16/18] static_call: Allow early init

[Peter Zijlstra]

On Wed, May 06, 2020 at 04:15:47PM -0500, Josh Poimboeuf wrote:

> This doesn't work when the key is defined in a module.  In
> __static_call_update(), first.site_mod->mod is NULL, but
> static_call_key_sites() points to the module's call sites.
> 
> This seems to fix it (sorry, also has the 'next' -> 'mods' rename).
> The actual fix is in static_call_key_sites() and static_call_key_mods().
> 

> @@ -118,7 +118,12 @@ static inline struct static_call_site *static_call_key_sites(struct static_call_
>  void __static_call_update(struct static_call_key *key, void *tramp, void *func)
>  {
>  	struct static_call_site *site, *stop;
> -	struct static_call_mod *site_mod, first;
> +	struct static_call_mod *site_mod;
> +	struct static_call_mod first = {
> +		.next = static_call_key_mods(key),
> +		.mod = NULL,
> +		.sites = static_call_key_sites(key),
> +	};
>  
>  	cpus_read_lock();
>  	static_call_lock();

This bit is actually broken, we need static_call_lock(), otherwise the
values just read in @first are not reliable.

New version below.

---
Subject: static_call: Allow early init
From: Peter Zijlstra <peterz@infradead.org>
Date: Fri, 4 Oct 17:21:10 CEST 2019

In order to use static_call() to wire up x86_pmu, we need to
initialize earlier; copy some of the tricks from jump_label to enable
this.

Primarily we overload key->next to store a sites pointer when there
are no modules, this avoids having to use kmalloc() to initialize the
sites and allows us to run much earlier.

(arguably, this is much much earlier than needed for perf, but it
might allow other uses.)

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
---
 arch/x86/kernel/setup.c       |    2 +
 arch/x86/kernel/static_call.c |    8 +++++-
 include/linux/static_call.h   |   15 +++++++++--
 kernel/static_call.c          |   55 +++++++++++++++++++++++++++++++++++++++---
 4 files changed, 74 insertions(+), 6 deletions(-)

--- a/arch/x86/kernel/setup.c
+++ b/arch/x86/kernel/setup.c
@@ -19,6 +19,7 @@
 #include <linux/hugetlb.h>
 #include <linux/tboot.h>
 #include <linux/usb/xhci-dbgp.h>
+#include <linux/static_call.h>
 
 #include <uapi/linux/mount.h>
 
@@ -848,6 +849,7 @@ void __init setup_arch(char **cmdline_p)
 	early_cpu_init();
 	arch_init_ideal_nops();
 	jump_label_init();
+	static_call_init();
 	early_ioremap_init();
 
 	setup_olpc_ofw_pgd();
--- a/arch/x86/kernel/static_call.c
+++ b/arch/x86/kernel/static_call.c
@@ -11,7 +11,7 @@ enum insn_type {
 	RET = 3,  /* tramp / site cond-tail-call */
 };
 
-static void __static_call_transform(void *insn, enum insn_type type, void *func)
+static void __ref __static_call_transform(void *insn, enum insn_type type, void *func)
 {
 	int size = CALL_INSN_SIZE;
 	const void *code;
@@ -33,11 +33,17 @@ static void __static_call_transform(void
 		code = text_gen_insn(RET_INSN_OPCODE, insn, func);
 		size = RET_INSN_SIZE;
 		break;
+
+	default: /* GCC is a moron -- it figures @code can be uninitialized below */
+		BUG();
 	}
 
 	if (memcmp(insn, code, size) == 0)
 		return;
 
+	if (unlikely(system_state == SYSTEM_BOOTING))
+		return text_poke_early(insn, code, size);
+
 	text_poke_bp(insn, code, size, NULL);
 }
 
--- a/include/linux/static_call.h
+++ b/include/linux/static_call.h
@@ -99,6 +99,8 @@ extern void arch_static_call_transform(v
 
 #ifdef CONFIG_HAVE_STATIC_CALL_INLINE
 
+extern void __init static_call_init(void);
+
 struct static_call_mod {
 	struct static_call_mod *next;
 	struct module *mod; /* for vmlinux, mod == NULL */
@@ -107,7 +109,12 @@ struct static_call_mod {
 
 struct static_call_key {
 	void *func;
-	struct static_call_mod *mods;
+	union {
+		/* bit 0: 0 = mods, 1 = sites */
+		unsigned long type;
+		struct static_call_mod *mods;
+		struct static_call_site *sites;
+	};
 };
 
 extern void __static_call_update(struct static_call_key *key, void *tramp, void *func);
@@ -118,7 +125,7 @@ extern int static_call_text_reserved(voi
 	DECLARE_STATIC_CALL(name, _func);				\
 	struct static_call_key STATIC_CALL_KEY(name) = {		\
 		.func = _func,						\
-		.next = NULL,						\
+		.type = 1,						\
 	};								\
 	ARCH_DEFINE_STATIC_CALL_TRAMP(name, _func)
 
@@ -143,6 +150,8 @@ extern int static_call_text_reserved(voi
 
 #elif defined(CONFIG_HAVE_STATIC_CALL)
 
+static inline void static_call_init(void) { }
+
 struct static_call_key {
 	void *func;
 };
@@ -188,6 +197,8 @@ static inline int static_call_text_reser
 
 #else /* Generic implementation */
 
+static inline void static_call_init(void) { }
+
 struct static_call_key {
 	void *func;
 };
--- a/kernel/static_call.c
+++ b/kernel/static_call.c
@@ -94,10 +94,31 @@ static inline void static_call_sort_entr
 	     static_call_site_cmp, static_call_site_swap);
 }
 
+static inline bool static_call_key_has_mods(struct static_call_key *key)
+{
+	return !(key->type & 1);
+}
+
+static inline struct static_call_mod *static_call_key_next(struct static_call_key *key)
+{
+	if (!static_call_key_has_mods(key))
+		return NULL;
+
+	return key->mods;
+}
+
+static inline struct static_call_site *static_call_key_sites(struct static_call_key *key)
+{
+	if (static_call_key_has_mods(key))
+		return NULL
+
+	return (struct static_call_site *)(key->type & ~1);
+}
+
 void __static_call_update(struct static_call_key *key, void *tramp, void *func)
 {
 	struct static_call_site *site, *stop;
-	struct static_call_mod *site_mod;
+	struct static_call_mod *site_mod, first;
 
 	cpus_read_lock();
 	static_call_lock();
@@ -116,13 +137,22 @@ void __static_call_update(struct static_
 	if (WARN_ON_ONCE(!static_call_initialized))
 		goto done;
 
-	for (site_mod = key->mods; site_mod; site_mod = site_mod->next) {
+	first = (struct static_call_mod){
+		.next = static_call_key_next(key),
+		.mod = NULL,
+		.sites = static_call_key_sites(key),
+	};
+
+	for (site_mod = &first; site_mod; site_mod = site_mod->next) {
 		struct module *mod = site_mod->mod;
 
 		if (!site_mod->sites) {
 			/*
 			 * This can happen if the static call key is defined in
 			 * a module which doesn't use it.
+			 *
+			 * It also happens in the has_mods case, where the
+			 * 'first' entry has no sites associated with it.
 			 */
 			continue;
 		}
@@ -192,16 +222,35 @@ static int __static_call_init(struct mod
 		if (key != prev_key) {
 			prev_key = key;
 
+			if (!mod) {
+				key->sites = site;
+				key->type |= 1;
+				goto do_transform;
+			}
+
 			site_mod = kzalloc(sizeof(*site_mod), GFP_KERNEL);
 			if (!site_mod)
 				return -ENOMEM;
 
+			if (!static_call_key_has_mods(key)) {
+				site_mod->mod = NULL;
+				site_mod->next = NULL;
+				site_mod->sites = static_call_key_sites(key);
+
+				key->mods = site_mod;
+
+				site_mod = kzalloc(sizeof(*site_mod), GFP_KERNEL);
+				if (!site_mod)
+					return -ENOMEM;
+			}
+
 			site_mod->mod = mod;
 			site_mod->sites = site;
 			site_mod->next = key->mods;
 			key->mods = site_mod;
 		}
 
+do_transform:
 		arch_static_call_transform(site_addr, NULL, key->func,
 				static_call_is_tail(site));
 	}
@@ -344,7 +393,7 @@ int static_call_text_reserved(void *star
 	return ret;
 }
 
-static void __init static_call_init(void)
+void __init static_call_init(void)
 {
 	int ret;
 

Re: [PATCH v4 16/18] static_call: Allow early init

[Josh Poimboeuf]

On Fri, May 08, 2020 at 03:31:56PM +0200, Peter Zijlstra wrote:
> New version below.
> 
> ---
> Subject: static_call: Allow early init
> From: Peter Zijlstra <peterz@infradead.org>
> Date: Fri, 4 Oct 17:21:10 CEST 2019
> 
> In order to use static_call() to wire up x86_pmu, we need to
> initialize earlier; copy some of the tricks from jump_label to enable
> this.
> 
> Primarily we overload key->next to store a sites pointer when there
> are no modules, this avoids having to use kmalloc() to initialize the
> sites and allows us to run much earlier.
> 
> (arguably, this is much much earlier than needed for perf, but it
> might allow other uses.)
> 
> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>

Looks good, I'll try to do some more testing today-ish.

-- 
Josh

Re: [PATCH v4 16/18] static_call: Allow early init

[Peter Zijlstra]

On Fri, May 08, 2020 at 09:27:03AM -0500, Josh Poimboeuf wrote:

> Looks good, I'll try to do some more testing today-ish.

I'll try and push out a new version after I get dinner sorted.

[PATCH v4 17/18] x86/perf, static_call: Optimize x86_pmu methods

[Peter Zijlstra]

Replace many of the indirect calls with static_call().

XXX run performance numbers

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
---
 arch/x86/events/core.c |  140 +++++++++++++++++++++++++++++++++++--------------
 1 file changed, 100 insertions(+), 40 deletions(-)

--- a/arch/x86/events/core.c
+++ b/arch/x86/events/core.c
@@ -28,6 +28,7 @@
 #include <linux/bitops.h>
 #include <linux/device.h>
 #include <linux/nospec.h>
+#include <linux/static_call.h>
 
 #include <asm/apic.h>
 #include <asm/stacktrace.h>
@@ -52,6 +53,40 @@ DEFINE_PER_CPU(struct cpu_hw_events, cpu
 DEFINE_STATIC_KEY_FALSE(rdpmc_never_available_key);
 DEFINE_STATIC_KEY_FALSE(rdpmc_always_available_key);
 
+/*
+ * This here 'abuses' DEFINE_STATIC_COND_CALL() to get a static_call defined
+ * from just a typename, as opposed to an actual function. While some of these
+ * will indeed be used with static_cond_call(), many of them will not.
+ *
+ * Just like you can unconditionally call a function pointer that's initialized
+ * to NULL, as long as you make sure to set it to a valid function _before_
+ * use, so too can you use static_call() on a DEFINE_STATIC_COND_CALL(), as
+ * long as you use static_call_update() to set it before use.
+ */
+DEFINE_STATIC_COND_CALL(x86_pmu_handle_irq,  *x86_pmu.handle_irq);
+DEFINE_STATIC_COND_CALL(x86_pmu_disable_all, *x86_pmu.disable_all);
+DEFINE_STATIC_COND_CALL(x86_pmu_enable_all,  *x86_pmu.enable_all);
+DEFINE_STATIC_COND_CALL(x86_pmu_enable,	     *x86_pmu.enable);
+DEFINE_STATIC_COND_CALL(x86_pmu_disable,     *x86_pmu.disable);
+
+DEFINE_STATIC_COND_CALL(x86_pmu_add,  *x86_pmu.add);
+DEFINE_STATIC_COND_CALL(x86_pmu_del,  *x86_pmu.del);
+DEFINE_STATIC_COND_CALL(x86_pmu_read, *x86_pmu.read);
+
+DEFINE_STATIC_COND_CALL(x86_pmu_schedule_events,       *x86_pmu.schedule_events);
+DEFINE_STATIC_COND_CALL(x86_pmu_get_event_constraints, *x86_pmu.get_event_constraints);
+DEFINE_STATIC_COND_CALL(x86_pmu_put_event_constraints, *x86_pmu.put_event_constraints);
+
+DEFINE_STATIC_COND_CALL(x86_pmu_start_scheduling,  *x86_pmu.start_scheduling);
+DEFINE_STATIC_COND_CALL(x86_pmu_commit_scheduling, *x86_pmu.commit_scheduling);
+DEFINE_STATIC_COND_CALL(x86_pmu_stop_scheduling,   *x86_pmu.stop_scheduling);
+
+DEFINE_STATIC_COND_CALL(x86_pmu_sched_task,    *x86_pmu.sched_task);
+DEFINE_STATIC_COND_CALL(x86_pmu_swap_task_ctx, *x86_pmu.swap_task_ctx);
+
+DEFINE_STATIC_COND_CALL(x86_pmu_drain_pebs,   *x86_pmu.drain_pebs);
+DEFINE_STATIC_COND_CALL(x86_pmu_pebs_aliases, *x86_pmu.pebs_aliases);
+
 u64 __read_mostly hw_cache_event_ids
 				[PERF_COUNT_HW_CACHE_MAX]
 				[PERF_COUNT_HW_CACHE_OP_MAX]
@@ -660,7 +695,7 @@ static void x86_pmu_disable(struct pmu *
 	cpuc->enabled = 0;
 	barrier();
 
-	x86_pmu.disable_all();
+	static_call(x86_pmu_disable_all)();
 }
 
 void x86_pmu_enable_all(int added)
@@ -907,8 +942,7 @@ int x86_schedule_events(struct cpu_hw_ev
 	if (cpuc->txn_flags & PERF_PMU_TXN_ADD)
 		n0 -= cpuc->n_txn;
 
-	if (x86_pmu.start_scheduling)
-		x86_pmu.start_scheduling(cpuc);
+	static_cond_call(x86_pmu_start_scheduling)(cpuc);
 
 	for (i = 0, wmin = X86_PMC_IDX_MAX, wmax = 0; i < n; i++) {
 		c = cpuc->event_constraint[i];
@@ -925,7 +959,7 @@ int x86_schedule_events(struct cpu_hw_ev
 		 * change due to external factors (sibling state, allow_tfa).
 		 */
 		if (!c || (c->flags & PERF_X86_EVENT_DYNAMIC)) {
-			c = x86_pmu.get_event_constraints(cpuc, i, cpuc->event_list[i]);
+			c = static_call(x86_pmu_get_event_constraints)(cpuc, i, cpuc->event_list[i]);
 			cpuc->event_constraint[i] = c;
 		}
 
@@ -1008,8 +1042,7 @@ int x86_schedule_events(struct cpu_hw_ev
 	if (!unsched && assign) {
 		for (i = 0; i < n; i++) {
 			e = cpuc->event_list[i];
-			if (x86_pmu.commit_scheduling)
-				x86_pmu.commit_scheduling(cpuc, i, assign[i]);
+			static_cond_call(x86_pmu_commit_scheduling)(cpuc, i, assign[i]);
 		}
 	} else {
 		for (i = n0; i < n; i++) {
@@ -1018,15 +1051,13 @@ int x86_schedule_events(struct cpu_hw_ev
 			/*
 			 * release events that failed scheduling
 			 */
-			if (x86_pmu.put_event_constraints)
-				x86_pmu.put_event_constraints(cpuc, e);
+			static_cond_call(x86_pmu_put_event_constraints)(cpuc, e);
 
 			cpuc->event_constraint[i] = NULL;
 		}
 	}
 
-	if (x86_pmu.stop_scheduling)
-		x86_pmu.stop_scheduling(cpuc);
+	static_cond_call(x86_pmu_stop_scheduling)(cpuc);
 
 	return unsched ? -EINVAL : 0;
 }
@@ -1217,7 +1248,7 @@ static void x86_pmu_enable(struct pmu *p
 	cpuc->enabled = 1;
 	barrier();
 
-	x86_pmu.enable_all(added);
+	static_call(x86_pmu_enable_all)(added);
 }
 
 static DEFINE_PER_CPU(u64 [X86_PMC_IDX_MAX], pmc_prev_left);
@@ -1338,7 +1369,7 @@ static int x86_pmu_add(struct perf_event
 	if (cpuc->txn_flags & PERF_PMU_TXN_ADD)
 		goto done_collect;
 
-	ret = x86_pmu.schedule_events(cpuc, n, assign);
+	ret = static_call(x86_pmu_schedule_events)(cpuc, n, assign);
 	if (ret)
 		goto out;
 	/*
@@ -1356,13 +1387,11 @@ static int x86_pmu_add(struct perf_event
 	cpuc->n_added += n - n0;
 	cpuc->n_txn += n - n0;
 
-	if (x86_pmu.add) {
-		/*
-		 * This is before x86_pmu_enable() will call x86_pmu_start(),
-		 * so we enable LBRs before an event needs them etc..
-		 */
-		x86_pmu.add(event);
-	}
+	/*
+	 * This is before x86_pmu_enable() will call x86_pmu_start(),
+	 * so we enable LBRs before an event needs them etc..
+	 */
+	static_cond_call(x86_pmu_add)(event);
 
 	ret = 0;
 out:
@@ -1390,7 +1419,7 @@ static void x86_pmu_start(struct perf_ev
 	cpuc->events[idx] = event;
 	__set_bit(idx, cpuc->active_mask);
 	__set_bit(idx, cpuc->running);
-	x86_pmu.enable(event);
+	static_call(x86_pmu_enable)(event);
 	perf_event_update_userpage(event);
 }
 
@@ -1460,7 +1489,7 @@ void x86_pmu_stop(struct perf_event *eve
 	struct hw_perf_event *hwc = &event->hw;
 
 	if (test_bit(hwc->idx, cpuc->active_mask)) {
-		x86_pmu.disable(event);
+		static_call(x86_pmu_disable)(event);
 		__clear_bit(hwc->idx, cpuc->active_mask);
 		cpuc->events[hwc->idx] = NULL;
 		WARN_ON_ONCE(hwc->state & PERF_HES_STOPPED);
@@ -1510,8 +1539,7 @@ static void x86_pmu_del(struct perf_even
 	if (i >= cpuc->n_events - cpuc->n_added)
 		--cpuc->n_added;
 
-	if (x86_pmu.put_event_constraints)
-		x86_pmu.put_event_constraints(cpuc, event);
+	static_cond_call(x86_pmu_put_event_constraints)(cpuc, event);
 
 	/* Delete the array entry. */
 	while (++i < cpuc->n_events) {
@@ -1524,13 +1552,12 @@ static void x86_pmu_del(struct perf_even
 	perf_event_update_userpage(event);
 
 do_del:
-	if (x86_pmu.del) {
-		/*
-		 * This is after x86_pmu_stop(); so we disable LBRs after any
-		 * event can need them etc..
-		 */
-		x86_pmu.del(event);
-	}
+
+	/*
+	 * This is after x86_pmu_stop(); so we disable LBRs after any
+	 * event can need them etc..
+	 */
+	static_cond_call(x86_pmu_del)(event);
 }
 
 int x86_pmu_handle_irq(struct pt_regs *regs)
@@ -1608,7 +1635,7 @@ perf_event_nmi_handler(unsigned int cmd,
 		return NMI_DONE;
 
 	start_clock = sched_clock();
-	ret = x86_pmu.handle_irq(regs);
+	ret = static_call(x86_pmu_handle_irq)(regs);
 	finish_clock = sched_clock();
 
 	perf_sample_event_took(finish_clock - start_clock);
@@ -1821,6 +1848,38 @@ ssize_t x86_event_sysfs_show(char *page,
 static struct attribute_group x86_pmu_attr_group;
 static struct attribute_group x86_pmu_caps_group;
 
+static void x86_pmu_static_call_update(void)
+{
+	static_call_update(x86_pmu_handle_irq, x86_pmu.handle_irq);
+	static_call_update(x86_pmu_disable_all, x86_pmu.disable_all);
+	static_call_update(x86_pmu_enable_all, x86_pmu.enable_all);
+	static_call_update(x86_pmu_enable, x86_pmu.enable);
+	static_call_update(x86_pmu_disable, x86_pmu.disable);
+
+	static_call_update(x86_pmu_add, x86_pmu.add);
+	static_call_update(x86_pmu_del, x86_pmu.del);
+	static_call_update(x86_pmu_read, x86_pmu.read);
+
+	static_call_update(x86_pmu_schedule_events, x86_pmu.schedule_events);
+	static_call_update(x86_pmu_get_event_constraints, x86_pmu.get_event_constraints);
+	static_call_update(x86_pmu_put_event_constraints, x86_pmu.put_event_constraints);
+
+	static_call_update(x86_pmu_start_scheduling, x86_pmu.start_scheduling);
+	static_call_update(x86_pmu_commit_scheduling, x86_pmu.commit_scheduling);
+	static_call_update(x86_pmu_stop_scheduling, x86_pmu.stop_scheduling);
+
+	static_call_update(x86_pmu_sched_task, x86_pmu.sched_task);
+	static_call_update(x86_pmu_swap_task_ctx, x86_pmu.swap_task_ctx);
+
+	static_call_update(x86_pmu_drain_pebs, x86_pmu.drain_pebs);
+	static_call_update(x86_pmu_pebs_aliases, x86_pmu.pebs_aliases);
+}
+
+static void _x86_pmu_read(struct perf_event *event)
+{
+	x86_perf_event_update(event);
+}
+
 static int __init init_hw_perf_events(void)
 {
 	struct x86_pmu_quirk *quirk;
@@ -1889,6 +1948,11 @@ static int __init init_hw_perf_events(vo
 	pr_info("... fixed-purpose events:   %d\n",     x86_pmu.num_counters_fixed);
 	pr_info("... event mask:             %016Lx\n", x86_pmu.intel_ctrl);
 
+	if (!x86_pmu.read)
+		x86_pmu.read = _x86_pmu_read;
+
+	x86_pmu_static_call_update();
+
 	/*
 	 * Install callbacks. Core will call them for each online
 	 * cpu.
@@ -1925,11 +1989,9 @@ static int __init init_hw_perf_events(vo
 }
 early_initcall(init_hw_perf_events);
 
-static inline void x86_pmu_read(struct perf_event *event)
+static void x86_pmu_read(struct perf_event *event)
 {
-	if (x86_pmu.read)
-		return x86_pmu.read(event);
-	x86_perf_event_update(event);
+	static_call(x86_pmu_read)(event);
 }
 
 /*
@@ -2006,7 +2068,7 @@ static int x86_pmu_commit_txn(struct pmu
 	if (!x86_pmu_initialized())
 		return -EAGAIN;
 
-	ret = x86_pmu.schedule_events(cpuc, n, assign);
+	ret = static_call(x86_pmu_schedule_events)(cpuc, n, assign);
 	if (ret)
 		return ret;
 
@@ -2299,15 +2361,13 @@ static const struct attribute_group *x86
 
 static void x86_pmu_sched_task(struct perf_event_context *ctx, bool sched_in)
 {
-	if (x86_pmu.sched_task)
-		x86_pmu.sched_task(ctx, sched_in);
+	static_cond_call(x86_pmu_sched_task)(ctx, sched_in);
 }
 
 static void x86_pmu_swap_task_ctx(struct perf_event_context *prev,
 				  struct perf_event_context *next)
 {
-	if (x86_pmu.swap_task_ctx)
-		x86_pmu.swap_task_ctx(prev, next);
+	static_cond_call(x86_pmu_swap_task_ctx)(prev, next);
 }
 
 void perf_check_microcode(void)

[PATCH v4 18/18] objtool: Clean up elf_write() condition

[Peter Zijlstra]

With there being multiple ways to change the ELF data, let's more
concisely track modification.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
---
 tools/objtool/check.c |    2 +-
 tools/objtool/elf.c   |    8 +++++++-
 tools/objtool/elf.h   |    3 ++-
 3 files changed, 10 insertions(+), 3 deletions(-)

--- a/tools/objtool/check.c
+++ b/tools/objtool/check.c
@@ -2904,7 +2904,7 @@ int check(const char *_objname, bool orc
 			goto out;
 	}
 
-	if (orc || !list_empty(&file.static_call_list)) {
+	if (file.elf->changed) {
 		ret = elf_write(file.elf);
 		if (ret < 0)
 			goto out;
--- a/tools/objtool/elf.c
+++ b/tools/objtool/elf.c
@@ -703,6 +703,8 @@ struct section *elf_create_section(struc
 	elf_hash_add(elf->section_hash, &sec->hash, sec->idx);
 	elf_hash_add(elf->section_name_hash, &sec->name_hash, str_hash(sec->name));
 
+	elf->changed = true;
+
 	return sec;
 }
 
@@ -769,7 +771,7 @@ int elf_rebuild_rela_section(struct sect
 	return 0;
 }
 
-int elf_write(const struct elf *elf)
+int elf_write(struct elf *elf)
 {
 	struct section *sec;
 	Elf_Scn *s;
@@ -786,6 +788,8 @@ int elf_write(const struct elf *elf)
 				WARN_ELF("gelf_update_shdr");
 				return -1;
 			}
+
+			sec->changed = false;
 		}
 	}
 
@@ -798,6 +802,8 @@ int elf_write(const struct elf *elf)
 		return -1;
 	}
 
+	elf->changed = false;
+
 	return 0;
 }
 
--- a/tools/objtool/elf.h
+++ b/tools/objtool/elf.h
@@ -77,6 +77,7 @@ struct elf {
 	Elf *elf;
 	GElf_Ehdr ehdr;
 	int fd;
+	bool changed;
 	char *name;
 	struct list_head sections;
 	DECLARE_HASHTABLE(symbol_hash, ELF_HASH_BITS);
@@ -118,7 +119,7 @@ struct elf *elf_open_read(const char *na
 struct section *elf_create_section(struct elf *elf, const char *name, unsigned int sh_flags, size_t entsize, int nr);
 struct section *elf_create_rela_section(struct elf *elf, struct section *base);
 void elf_add_rela(struct elf *elf, struct rela *rela);
-int elf_write(const struct elf *elf);
+int elf_write(struct elf *elf);
 void elf_close(struct elf *elf);
 
 struct section *find_section_by_name(const struct elf *elf, const char *name);

Re: [PATCH v4 00/18] Add static_call()

[Josh Poimboeuf]

On Fri, May 01, 2020 at 10:28:49PM +0200, Peter Zijlstra wrote:
> static_call(), is the idea of static_branch() applied to indirect function
> calls. Remove a data load (indirection) by modifying the text.
> 
> The inline implementation still relies on objtool to generate the
> .static_call_sites section, mostly because this is a natural place for x86_64
> and works for both GCC and LLVM.  Other architectures can pick other means
> if/when they implement the inline patching. The out-of-line (aka. trampoline)
> variant doesn't require this.
> 
> Patches go on top of tip/objtool/core.
> 
> Patches can also be found here:
> 
>   git://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue.git x86/static_call

So this branch has

  45a5c99a226a ("x86/tlb: Move trace_tlb_flush() declaration")

but I didn't see it posted here.  I guess you dropped it because it's no
longer needed b/c we fixed those 'undefined references' a different way.

-- 
Josh

Re: [PATCH v4 00/18] Add static_call()

[Peter Zijlstra]

On Wed, May 06, 2020 at 12:32:29PM -0500, Josh Poimboeuf wrote:
> On Fri, May 01, 2020 at 10:28:49PM +0200, Peter Zijlstra wrote:
> > static_call(), is the idea of static_branch() applied to indirect function
> > calls. Remove a data load (indirection) by modifying the text.
> > 
> > The inline implementation still relies on objtool to generate the
> > .static_call_sites section, mostly because this is a natural place for x86_64
> > and works for both GCC and LLVM.  Other architectures can pick other means
> > if/when they implement the inline patching. The out-of-line (aka. trampoline)
> > variant doesn't require this.
> > 
> > Patches go on top of tip/objtool/core.
> > 
> > Patches can also be found here:
> > 
> >   git://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue.git x86/static_call
> 
> So this branch has
> 
>   45a5c99a226a ("x86/tlb: Move trace_tlb_flush() declaration")
> 
> but I didn't see it posted here.  I guess you dropped it because it's no
> longer needed b/c we fixed those 'undefined references' a different way.

Correct; still prossibly a sane clean-up, but I got rid of it for now.