Messages in this thread | | | Subject | Re: [PATCH 2/2] ftrace: Use local_irq_{save,restore}_nmi() in tracers. | From | Steven Rostedt <> | Date | Tue, 06 Apr 2010 21:14:10 -0400 |
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On Tue, 2010-04-06 at 16:40 -0700, David Miller wrote: > Signed-off-by: David S. Miller <davem@davemloft.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);
These are equivalent for non sparc archs, correct?
If so,
Acked-by: Steven Rostedt <rostedt@goodmis.org>
-- Steve
> > 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
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