linux-kernel - [PATCH 2/2] ftrace: Use local_irq_{save,restore}

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Message-Id: <20100406.164002.40105966.davem@davemloft.net>
Date:	Tue, 06 Apr 2010 16:40:02 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	a.p.zijlstra@...llo.nl
Cc:	mingo@...e.hu, acme@...hat.com, paulus@...ba.org, efault@....de,
	fweisbec@...il.com, tglx@...utronix.de,
	linux-kernel@...r.kernel.org, sparclinux@...r.kernel.org,
	linux-arch@...r.kernel.org
Subject: [PATCH 2/2] ftrace: Use local_irq_{save,restore}_nmi() in tracers.


Signed-off-by: David S. Miller <davem@...emloft.net>
---
 kernel/trace/ftrace.c             |    4 ++--
 kernel/trace/trace_functions.c    |    8 ++++----
 kernel/trace/trace_sched_wakeup.c |    4 ++--
 kernel/trace/trace_stack.c        |    4 ++--
 4 files changed, 10 insertions(+), 10 deletions(-)

diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c
index d9062f5..41d4282 100644
--- a/kernel/trace/ftrace.c
+++ b/kernel/trace/ftrace.c
@@ -612,7 +612,7 @@ function_profile_call(unsigned long ip, unsigned long parent_ip)
 	if (!ftrace_profile_enabled)
 		return;
 
-	local_irq_save(flags);
+	local_irq_save_nmi(flags);
 
 	stat = &__get_cpu_var(ftrace_profile_stats);
 	if (!stat->hash || !ftrace_profile_enabled)
@@ -627,7 +627,7 @@ function_profile_call(unsigned long ip, unsigned long parent_ip)
 
 	rec->counter++;
  out:
-	local_irq_restore(flags);
+	local_irq_restore_nmi(flags);
 }
 
 #ifdef CONFIG_FUNCTION_GRAPH_TRACER
diff --git a/kernel/trace/trace_functions.c b/kernel/trace/trace_functions.c
index b3f3776..cac3f8d 100644
--- a/kernel/trace/trace_functions.c
+++ b/kernel/trace/trace_functions.c
@@ -91,7 +91,7 @@ function_trace_call(unsigned long ip, unsigned long parent_ip)
 	 * Need to use raw, since this must be called before the
 	 * recursive protection is performed.
 	 */
-	local_irq_save(flags);
+	local_irq_save_nmi(flags);
 	cpu = raw_smp_processor_id();
 	data = tr->data[cpu];
 	disabled = atomic_inc_return(&data->disabled);
@@ -102,7 +102,7 @@ function_trace_call(unsigned long ip, unsigned long parent_ip)
 	}
 
 	atomic_dec(&data->disabled);
-	local_irq_restore(flags);
+	local_irq_restore_nmi(flags);
 }
 
 static void
@@ -122,7 +122,7 @@ function_stack_trace_call(unsigned long ip, unsigned long parent_ip)
 	 * Need to use raw, since this must be called before the
 	 * recursive protection is performed.
 	 */
-	local_irq_save(flags);
+	local_irq_save_nmi(flags);
 	cpu = raw_smp_processor_id();
 	data = tr->data[cpu];
 	disabled = atomic_inc_return(&data->disabled);
@@ -142,7 +142,7 @@ function_stack_trace_call(unsigned long ip, unsigned long parent_ip)
 	}
 
 	atomic_dec(&data->disabled);
-	local_irq_restore(flags);
+	local_irq_restore_nmi(flags);
 }
 
 
diff --git a/kernel/trace/trace_sched_wakeup.c b/kernel/trace/trace_sched_wakeup.c
index 0271742..891d3a0 100644
--- a/kernel/trace/trace_sched_wakeup.c
+++ b/kernel/trace/trace_sched_wakeup.c
@@ -65,11 +65,11 @@ wakeup_tracer_call(unsigned long ip, unsigned long parent_ip)
 	if (unlikely(disabled != 1))
 		goto out;
 
-	local_irq_save(flags);
+	local_irq_save_nmi(flags);
 
 	trace_function(tr, ip, parent_ip, flags, pc);
 
-	local_irq_restore(flags);
+	local_irq_restore_nmi(flags);
 
  out:
 	atomic_dec(&data->disabled);
diff --git a/kernel/trace/trace_stack.c b/kernel/trace/trace_stack.c
index f4bc9b2..14fa61c 100644
--- a/kernel/trace/trace_stack.c
+++ b/kernel/trace/trace_stack.c
@@ -53,7 +53,7 @@ static inline void check_stack(void)
 	if (!object_is_on_stack(&this_size))
 		return;
 
-	local_irq_save(flags);
+	local_irq_save_nmi(flags);
 	arch_spin_lock(&max_stack_lock);
 
 	/* a race could have already updated it */
@@ -104,7 +104,7 @@ static inline void check_stack(void)
 
  out:
 	arch_spin_unlock(&max_stack_lock);
-	local_irq_restore(flags);
+	local_irq_restore_nmi(flags);
 }
 
 static void
-- 
1.6.6.1

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