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From: Jason Baron <jbaron@redhat.com>
To: a.p.zijlstra@chello.nl, mingo@elte.hu
Cc: rostedt@goodmis.org, mathieu.desnoyers@efficios.com,
	hpa@zytor.com, davem@davemloft.net, ddaney.cavm@gmail.com,
	akpm@linux-foundation.org, fweisbec@gmail.com,
	linux-kernel@vger.kernel.org
Subject: [PATCH 06/10] tracepoints: update to use very_unlikely()
Date: Tue, 21 Feb 2012 15:03:12 -0500	[thread overview]
Message-ID: <770815d6ce346fbf9b7ece4b751622e77d2f2c10.1329851692.git.jbaron@redhat.com> (raw)
In-Reply-To: <cover.1329851692.git.jbaron@redhat.com>

Update tracepoins with api change: static_branch() -> very_unlikely().

Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Signed-off-by: Jason Baron <jbaron@redhat.com>
---
 include/linux/tracepoint.h |    4 ++--
 kernel/tracepoint.c        |   12 ++++++------
 2 files changed, 8 insertions(+), 8 deletions(-)

diff --git a/include/linux/tracepoint.h b/include/linux/tracepoint.h
index df0a779..282cf59 100644
--- a/include/linux/tracepoint.h
+++ b/include/linux/tracepoint.h
@@ -143,7 +143,7 @@ static inline void tracepoint_synchronize_unregister(void)
 	extern struct tracepoint __tracepoint_##name;			\
 	static inline void trace_##name(proto)				\
 	{								\
-		if (static_branch(&__tracepoint_##name.key))		\
+		if (very_unlikely(&__tracepoint_##name.key))		\
 			__DO_TRACE(&__tracepoint_##name,		\
 				TP_PROTO(data_proto),			\
 				TP_ARGS(data_args),			\
@@ -176,7 +176,7 @@ static inline void tracepoint_synchronize_unregister(void)
 	__attribute__((section("__tracepoints_strings"))) = #name;	 \
 	struct tracepoint __tracepoint_##name				 \
 	__attribute__((section("__tracepoints"))) =			 \
-		{ __tpstrtab_##name, JUMP_LABEL_INIT, reg, unreg, NULL };\
+		{ __tpstrtab_##name, JUMP_LABEL_INIT_FALSE, reg, unreg, NULL };\
 	static struct tracepoint * const __tracepoint_ptr_##name __used	 \
 	__attribute__((section("__tracepoints_ptrs"))) =		 \
 		&__tracepoint_##name;
diff --git a/kernel/tracepoint.c b/kernel/tracepoint.c
index f1539de..ad32493 100644
--- a/kernel/tracepoint.c
+++ b/kernel/tracepoint.c
@@ -256,9 +256,9 @@ static void set_tracepoint(struct tracepoint_entry **entry,
 {
 	WARN_ON(strcmp((*entry)->name, elem->name) != 0);
 
-	if (elem->regfunc && !jump_label_enabled(&elem->key) && active)
+	if (elem->regfunc && !jump_label_true(&elem->key) && active)
 		elem->regfunc();
-	else if (elem->unregfunc && jump_label_enabled(&elem->key) && !active)
+	else if (elem->unregfunc && jump_label_true(&elem->key) && !active)
 		elem->unregfunc();
 
 	/*
@@ -269,9 +269,9 @@ static void set_tracepoint(struct tracepoint_entry **entry,
 	 * is used.
 	 */
 	rcu_assign_pointer(elem->funcs, (*entry)->funcs);
-	if (active && !jump_label_enabled(&elem->key))
+	if (active && !jump_label_true(&elem->key))
 		jump_label_inc(&elem->key);
-	else if (!active && jump_label_enabled(&elem->key))
+	else if (!active && jump_label_true(&elem->key))
 		jump_label_dec(&elem->key);
 }
 
@@ -283,10 +283,10 @@ static void set_tracepoint(struct tracepoint_entry **entry,
  */
 static void disable_tracepoint(struct tracepoint *elem)
 {
-	if (elem->unregfunc && jump_label_enabled(&elem->key))
+	if (elem->unregfunc && jump_label_true(&elem->key))
 		elem->unregfunc();
 
-	if (jump_label_enabled(&elem->key))
+	if (jump_label_true(&elem->key))
 		jump_label_dec(&elem->key);
 	rcu_assign_pointer(elem->funcs, NULL);
 }
-- 
1.7.7.5


  parent reply	other threads:[~2012-02-21 20:03 UTC|newest]

Thread overview: 84+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-02-21 20:02 [PATCH 00/10] jump label: introduce very_[un]likely + cleanups + docs Jason Baron
2012-02-21 20:02 ` [PATCH 01/10] jump label: Add a WARN() if jump label key count goes negative Jason Baron
2012-02-29 10:13   ` [tip:perf/core] " tip-bot for Jason Baron
2012-02-21 20:02 ` [PATCH 02/10] jump label: fix compiler warning Jason Baron
2012-02-29 10:14   ` [tip:perf/core] jump label: Fix " tip-bot for Jason Baron
2012-02-21 20:03 ` [PATCH 03/10] jump label: introduce very_unlikely() Jason Baron
2012-02-21 20:03 ` [PATCH 04/10] jump label: introduce very_likely() Jason Baron
2012-02-21 20:03 ` [PATCH 05/10] perf: update to use 'very_unlikely()' Jason Baron
2012-02-21 20:03 ` Jason Baron [this message]
2012-02-21 20:03 ` [PATCH 07/10] sched: update to use very_[un]likely() Jason Baron
2012-02-21 20:03 ` [PATCH 08/10] kvm: update to use very_unlikely() Jason Baron
2012-02-21 20:03 ` [PATCH 09/10] net: " Jason Baron
2012-02-21 20:03 ` [PATCH 10/10] jump label: Add docs better explaining the whole jump label mechanism Jason Baron
2012-02-29 10:15   ` [tip:perf/core] static keys: Add docs better explaining the whole 'struct static_key' mechanism tip-bot for Jason Baron
2012-02-21 20:09 ` [PATCH 00/10] jump label: introduce very_[un]likely + cleanups + docs H. Peter Anvin
2012-02-21 20:20   ` Jason Baron
2012-02-21 20:39     ` Steven Rostedt
2012-02-21 21:10       ` H. Peter Anvin
2012-02-21 21:16         ` Mathieu Desnoyers
2012-02-21 21:11       ` Mathieu Desnoyers
2012-02-22  7:32       ` Ingo Molnar
2012-02-22  7:53         ` Ingo Molnar
2012-02-22  8:01           ` H. Peter Anvin
2012-02-22  8:18             ` Ingo Molnar
2012-02-22  8:58               ` [PATCH] static keys: Introduce 'struct static_key', very_[un]likely(), static_key_slow_[inc|dec]() Ingo Molnar
2012-02-29 10:16                 ` [tip:perf/core] static keys: Introduce 'struct static_key', static_key_true()/false() and static_key_slow_[inc|dec]() tip-bot for Ingo Molnar
2012-02-22  9:03               ` [PATCH] jump labels: Explain the .config option better Ingo Molnar
2012-02-22 15:08               ` [PATCH 00/10] jump label: introduce very_[un]likely + cleanups + docs H. Peter Anvin
2012-02-22 15:51                 ` Ingo Molnar
2012-02-22 21:33               ` Paul Mackerras
2012-02-23 10:02                 ` Ingo Molnar
2012-02-23 16:21                   ` Jason Baron
2012-02-23 17:10                     ` H. Peter Anvin
2012-02-24  9:11                     ` Ingo Molnar
2012-02-23 17:18                   ` Linus Torvalds
2012-02-23 22:33                     ` Ingo Molnar
2012-02-23 22:39                       ` Ingo Molnar
2012-02-23 22:44                         ` Steven Rostedt
2012-02-23 23:18                         ` Mathieu Desnoyers
2012-02-24  2:25                           ` Jason Baron
2012-02-24  9:08                             ` Ingo Molnar
2012-02-24 15:35                               ` Jason Baron
2012-02-27  7:40                                 ` Ingo Molnar
2012-02-24 15:51                               ` Mathieu Desnoyers
2012-02-24 16:06                               ` Steven Rostedt
2012-02-24  7:52                         ` static keys: Introduce 'struct static_key', static_key_true()/false() and static_key_slow_[inc|dec]() Ingo Molnar
2012-02-24  7:59                           ` [PATCH] " Ingo Molnar
2012-02-24  7:54                         ` [PATCH] static keys: Add docs better explaining the whole 'struct static_key' mechanism Ingo Molnar
2012-02-23 22:45                       ` [PATCH 00/10] jump label: introduce very_[un]likely + cleanups + docs Linus Torvalds
2012-02-24  8:04                         ` Ingo Molnar
2012-02-24  2:42                       ` Jason Baron
2012-02-21 20:21   ` Steven Rostedt
2012-02-21 21:11     ` H. Peter Anvin
2012-02-22  6:50   ` Ingo Molnar
2012-02-22  7:03     ` H. Peter Anvin
2012-02-22  7:25       ` Ingo Molnar
2012-02-22  7:35         ` H. Peter Anvin
2012-02-22  7:48           ` Ingo Molnar
2012-02-22  7:55             ` H. Peter Anvin
2012-02-22  8:06               ` Ingo Molnar
2012-02-22 13:22                 ` Steven Rostedt
2012-02-22 13:34                   ` Ingo Molnar
2012-02-22 13:54                     ` Steven Rostedt
2012-02-22 14:20                       ` Mathieu Desnoyers
2012-02-22 14:36                         ` Steven Rostedt
2012-02-22 14:56                       ` Ingo Molnar
2012-02-22 15:11                         ` H. Peter Anvin
2012-02-22 15:11                         ` Peter Zijlstra
2012-02-22 15:47                           ` Ingo Molnar
2012-02-22 15:12                         ` Steven Rostedt
2012-02-22 15:15                           ` H. Peter Anvin
2012-02-22 15:19                           ` H. Peter Anvin
2012-02-22 15:42                           ` Jason Baron
2012-02-22 15:54                             ` Steven Rostedt
2012-02-22 15:56                               ` Jason Baron
2012-02-22 16:08                                 ` Steven Rostedt
2012-02-22 15:19                         ` Jason Baron
2012-02-22 15:40                           ` H. Peter Anvin
2012-02-22 15:13                       ` Peter Zijlstra
2012-02-22 15:32                         ` Peter Zijlstra
2012-02-22 17:14                           ` Richard Henderson
2012-02-22 18:28                             ` H. Peter Anvin
2012-02-22 18:58                             ` Jason Baron
2012-02-22 19:10                               ` H. Peter Anvin

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