From: "tip-bot2 for Thomas Gleixner" <tip-bot2@linutronix.de>
To: linux-tip-commits@vger.kernel.org
Cc: Thomas Gleixner <tglx@linutronix.de>,
x86@kernel.org, linux-kernel@vger.kernel.org, maz@kernel.org
Subject: [tip: irq/core] genirq: Move irq_has_action() into core code
Date: Sat, 12 Dec 2020 12:58:42 -0000 [thread overview]
Message-ID: <160777792214.3364.6390594905664664886.tip-bot2@tip-bot2> (raw)
In-Reply-To: <20201210194042.548936472@linutronix.de>
The following commit has been merged into the irq/core branch of tip:
Commit-ID: db123744af5d237048f23ede05cc7ef0dc48db01
Gitweb: https://git.kernel.org/tip/db123744af5d237048f23ede05cc7ef0dc48db01
Author: Thomas Gleixner <tglx@linutronix.de>
AuthorDate: Thu, 10 Dec 2020 20:25:37 +01:00
Committer: Thomas Gleixner <tglx@linutronix.de>
CommitterDate: Sat, 12 Dec 2020 12:59:02 +01:00
genirq: Move irq_has_action() into core code
This function uses irq_to_desc() and is going to be used by modules to
replace the open coded irq_to_desc() (ab)usage. The final goal is to remove
the export of irq_to_desc() so driver cannot fiddle with it anymore.
Move it into the core code and fixup the usage sites to include the proper
header.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20201210194042.548936472@linutronix.de
---
arch/alpha/kernel/sys_jensen.c | 2 +-
arch/x86/kernel/topology.c | 1 +
include/linux/interrupt.h | 1 +
include/linux/irqdesc.h | 7 +------
kernel/irq/manage.c | 17 +++++++++++++++++
5 files changed, 21 insertions(+), 7 deletions(-)
diff --git a/arch/alpha/kernel/sys_jensen.c b/arch/alpha/kernel/sys_jensen.c
index 0a2ab6c..e5d870f 100644
--- a/arch/alpha/kernel/sys_jensen.c
+++ b/arch/alpha/kernel/sys_jensen.c
@@ -7,7 +7,7 @@
*
* Code supporting the Jensen.
*/
-
+#include <linux/interrupt.h>
#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/mm.h>
diff --git a/arch/x86/kernel/topology.c b/arch/x86/kernel/topology.c
index 0a2ec80..f5477ea 100644
--- a/arch/x86/kernel/topology.c
+++ b/arch/x86/kernel/topology.c
@@ -25,6 +25,7 @@
*
* Send feedback to <colpatch@us.ibm.com>
*/
+#include <linux/interrupt.h>
#include <linux/nodemask.h>
#include <linux/export.h>
#include <linux/mmzone.h>
diff --git a/include/linux/interrupt.h b/include/linux/interrupt.h
index ee8299e..e7c9726 100644
--- a/include/linux/interrupt.h
+++ b/include/linux/interrupt.h
@@ -232,6 +232,7 @@ extern void devm_free_irq(struct device *dev, unsigned int irq, void *dev_id);
# define local_irq_enable_in_hardirq() local_irq_enable()
#endif
+bool irq_has_action(unsigned int irq);
extern void disable_irq_nosync(unsigned int irq);
extern bool disable_hardirq(unsigned int irq);
extern void disable_irq(unsigned int irq);
diff --git a/include/linux/irqdesc.h b/include/linux/irqdesc.h
index 5745491..385a4fa 100644
--- a/include/linux/irqdesc.h
+++ b/include/linux/irqdesc.h
@@ -179,12 +179,7 @@ int handle_domain_nmi(struct irq_domain *domain, unsigned int hwirq,
/* Test to see if a driver has successfully requested an irq */
static inline int irq_desc_has_action(struct irq_desc *desc)
{
- return desc->action != NULL;
-}
-
-static inline int irq_has_action(unsigned int irq)
-{
- return irq_desc_has_action(irq_to_desc(irq));
+ return desc && desc->action != NULL;
}
/**
diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c
index c460e04..1767515 100644
--- a/kernel/irq/manage.c
+++ b/kernel/irq/manage.c
@@ -2752,3 +2752,20 @@ out_unlock:
return err;
}
EXPORT_SYMBOL_GPL(irq_set_irqchip_state);
+
+/**
+ * irq_has_action - Check whether an interrupt is requested
+ * @irq: The linux irq number
+ *
+ * Returns: A snapshot of the current state
+ */
+bool irq_has_action(unsigned int irq)
+{
+ bool res;
+
+ rcu_read_lock();
+ res = irq_desc_has_action(irq_to_desc(irq));
+ rcu_read_unlock();
+ return res;
+}
+EXPORT_SYMBOL_GPL(irq_has_action);
next prev parent reply other threads:[~2020-12-12 13:07 UTC|newest]
Thread overview: 105+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-12-10 19:25 [patch 00/30] genirq: Treewide hunt for irq descriptor abuse and assorted fixes Thomas Gleixner
2020-12-10 19:25 ` [patch 01/30] genirq: Move irq_has_action() into core code Thomas Gleixner
2020-12-12 12:58 ` tip-bot2 for Thomas Gleixner [this message]
2020-12-10 19:25 ` [patch 02/30] genirq: Move status flag checks to core Thomas Gleixner
2020-12-12 12:58 ` [tip: irq/core] " tip-bot2 for Thomas Gleixner
2020-12-27 19:20 ` [patch 02/30] " Guenter Roeck
2021-01-11 10:14 ` Thomas Gleixner
2021-01-13 14:53 ` [tip: irq/urgent] genirq: Export irq_check_status_bit() tip-bot2 for Thomas Gleixner
2020-12-10 19:25 ` [patch 03/30] genirq: Move irq_set_lockdep_class() to core Thomas Gleixner
2020-12-11 17:53 ` Andy Shevchenko
2020-12-11 21:08 ` Thomas Gleixner
2020-12-11 22:07 ` Thomas Gleixner
2020-12-12 13:22 ` Andy Shevchenko
2020-12-12 12:58 ` [tip: irq/core] " tip-bot2 for Thomas Gleixner
2020-12-10 19:25 ` [patch 04/30] genirq: Provide irq_get_effective_affinity() Thomas Gleixner
2020-12-12 12:58 ` [tip: irq/core] " tip-bot2 for Thomas Gleixner
2020-12-10 19:25 ` [patch 05/30] genirq: Annotate irq stats data races Thomas Gleixner
2020-12-12 12:58 ` [tip: irq/core] " tip-bot2 for Thomas Gleixner
2020-12-10 19:25 ` [patch 06/30] parisc/irq: Simplify irq count output for /proc/interrupts Thomas Gleixner
2020-12-12 12:58 ` [tip: irq/core] " tip-bot2 for Thomas Gleixner
2020-12-10 19:25 ` [patch 07/30] genirq: Make kstat_irqs() static Thomas Gleixner
2020-12-12 12:58 ` [tip: irq/core] " tip-bot2 for Thomas Gleixner
2020-12-10 19:25 ` [patch 08/30] genirq: Provide kstat_irqdesc_cpu() Thomas Gleixner
2020-12-12 12:58 ` [tip: irq/core] " tip-bot2 for Thomas Gleixner
2020-12-10 19:25 ` [patch 09/30] ARM: smp: Use irq_desc_kstat_cpu() in show_ipi_list() Thomas Gleixner
2020-12-11 18:08 ` Marc Zyngier
2020-12-12 12:58 ` [tip: irq/core] " tip-bot2 for Thomas Gleixner
2020-12-10 19:25 ` [patch 10/30] arm64/smp: Use irq_desc_kstat_cpu() in arch_show_interrupts() Thomas Gleixner
2020-12-11 18:08 ` Marc Zyngier
2020-12-12 12:58 ` [tip: irq/core] " tip-bot2 for Thomas Gleixner
2020-12-10 19:25 ` [patch 11/30] parisc/irq: Use irq_desc_kstat_cpu() in show_interrupts() Thomas Gleixner
2020-12-12 12:58 ` [tip: irq/core] " tip-bot2 for Thomas Gleixner
2020-12-10 19:25 ` [patch 12/30] s390/irq: Use irq_desc_kstat_cpu() in show_msi_interrupt() Thomas Gleixner
2020-12-10 20:31 ` Heiko Carstens
2020-12-12 12:58 ` [tip: irq/core] " tip-bot2 for Thomas Gleixner
2020-12-10 19:25 ` [patch 13/30] drm/i915/lpe_audio: Remove pointless irq_to_desc() usage Thomas Gleixner
2020-12-10 19:48 ` [Intel-gfx] " Ville Syrjälä
2020-12-11 9:51 ` Jani Nikula
2020-12-12 12:58 ` [tip: irq/core] " tip-bot2 for Thomas Gleixner
2020-12-10 19:25 ` [patch 14/30] drm/i915/pmu: Replace open coded kstat_irqs() copy Thomas Gleixner
2020-12-11 9:54 ` Jani Nikula
2020-12-11 10:13 ` Tvrtko Ursulin
2020-12-11 12:57 ` Thomas Gleixner
2020-12-11 14:19 ` David Laight
2020-12-11 21:10 ` Thomas Gleixner
2020-12-11 22:06 ` David Laight
2020-12-12 12:58 ` [tip: irq/core] " tip-bot2 for Thomas Gleixner
2020-12-10 19:25 ` [patch 15/30] pinctrl: nomadik: Use irq_has_action() Thomas Gleixner
2020-12-12 0:45 ` Linus Walleij
2020-12-12 12:58 ` [tip: irq/core] " tip-bot2 for Thomas Gleixner
2020-12-10 19:25 ` [patch 16/30] mfd: ab8500-debugfs: Remove the racy fiddling with irq_desc Thomas Gleixner
2020-12-11 8:22 ` Linus Walleij
2020-12-11 10:04 ` Lee Jones
2020-12-11 18:12 ` Andy Shevchenko
2020-12-12 12:58 ` [tip: irq/core] " tip-bot2 for Thomas Gleixner
2020-12-10 19:25 ` [patch 17/30] NTB/msi: Use irq_has_action() Thomas Gleixner
2020-12-10 20:33 ` Logan Gunthorpe
2020-12-12 12:58 ` [tip: irq/core] " tip-bot2 for Thomas Gleixner
2020-12-10 19:25 ` [patch 18/30] PCI: xilinx-nwl: Use irq_data_get_irq_chip_data() Thomas Gleixner
2020-12-10 22:56 ` Rob Herring
2020-12-12 12:58 ` [tip: irq/core] " tip-bot2 for Thomas Gleixner
2020-12-10 19:25 ` [patch 19/30] PCI: mobiveil: " Thomas Gleixner
2020-12-10 22:56 ` Rob Herring
2020-12-12 12:58 ` [tip: irq/core] " tip-bot2 for Thomas Gleixner
2020-12-10 19:25 ` [patch 20/30] net/mlx4: Replace irq_to_desc() abuse Thomas Gleixner
2020-12-12 12:58 ` [tip: irq/core] " tip-bot2 for Thomas Gleixner
2020-12-13 11:24 ` [patch 20/30] " Tariq Toukan
2020-12-10 19:25 ` [patch 21/30] net/mlx4: Use effective interrupt affinity Thomas Gleixner
2020-12-12 12:58 ` [tip: irq/core] " tip-bot2 for Thomas Gleixner
2020-12-13 11:31 ` [patch 21/30] " Tariq Toukan
2020-12-10 19:25 ` [patch 22/30] net/mlx5: Replace irq_to_desc() abuse Thomas Gleixner
2020-12-12 12:58 ` [tip: irq/core] " tip-bot2 for Thomas Gleixner
2020-12-13 11:34 ` [patch 22/30] " Tariq Toukan
2020-12-14 21:13 ` Saeed Mahameed
2020-12-10 19:25 ` [patch 23/30] net/mlx5: Use effective interrupt affinity Thomas Gleixner
2020-12-12 12:58 ` [tip: irq/core] " tip-bot2 for Thomas Gleixner
2020-12-13 11:35 ` [patch 23/30] " Tariq Toukan
2020-12-14 20:58 ` Saeed Mahameed
2020-12-10 19:26 ` [patch 24/30] xen/events: Remove unused bind_evtchn_to_irq_lateeoi() Thomas Gleixner
2020-12-10 23:19 ` boris.ostrovsky
2020-12-11 0:04 ` Thomas Gleixner
2020-12-12 12:58 ` [tip: irq/core] " tip-bot2 for Thomas Gleixner
2020-12-10 19:26 ` [patch 25/30] xen/events: Remove disfunct affinity spreading Thomas Gleixner
2020-12-12 12:58 ` [tip: irq/core] " tip-bot2 for Thomas Gleixner
2020-12-10 19:26 ` [patch 26/30] xen/events: Use immediate affinity setting Thomas Gleixner
2020-12-12 12:58 ` [tip: irq/core] " tip-bot2 for Thomas Gleixner
2020-12-10 19:26 ` [patch 27/30] xen/events: Only force affinity mask for percpu interrupts Thomas Gleixner
2020-12-10 23:20 ` boris.ostrovsky
2020-12-11 0:06 ` Thomas Gleixner
2020-12-11 6:17 ` Jürgen Groß
2020-12-11 10:13 ` Thomas Gleixner
2020-12-11 10:23 ` Jürgen Groß
2020-12-11 12:10 ` Jürgen Groß
2020-12-11 12:37 ` Thomas Gleixner
2020-12-11 14:29 ` boris.ostrovsky
2020-12-11 21:27 ` Thomas Gleixner
2020-12-11 22:21 ` Andrew Cooper
2020-12-11 22:56 ` Thomas Gleixner
2020-12-12 12:58 ` [tip: irq/core] " tip-bot2 for Thomas Gleixner
2020-12-10 19:26 ` [patch 28/30] xen/events: Reduce irq_info::spurious_cnt storage size Thomas Gleixner
2020-12-12 12:58 ` [tip: irq/core] xen/events: Reduce irq_info:: Spurious_cnt " tip-bot2 for Thomas Gleixner
2020-12-10 19:26 ` [patch 29/30] xen/events: Implement irq distribution Thomas Gleixner
2020-12-12 12:58 ` [tip: irq/core] " tip-bot2 for Thomas Gleixner
2020-12-10 19:26 ` [patch 30/30] genirq: Remove export of irq_to_desc() Thomas Gleixner
2020-12-12 12:58 ` [tip: irq/core] " tip-bot2 for Thomas Gleixner
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