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| author | Frederic Weisbecker <fweisbec@gmail.com> | 2009-07-29 03:33:51 +0200 |
|---|---|---|
| committer | Frederic Weisbecker <fweisbec@gmail.com> | 2009-08-06 07:28:05 +0200 |
| commit | 07868b086cca784f4b532fc2ab574ec3a73b468a (patch) | |
| tree | 38678a56d6d401ebc710e41096f6aed04c17ba0b /arch/x86/kernel/ftrace.c | |
| parent | tracing: Simplify print_graph_cpu() (diff) | |
| download | linux-07868b086cca784f4b532fc2ab574ec3a73b468a.tar.xz linux-07868b086cca784f4b532fc2ab574ec3a73b468a.zip | |
tracing/function-graph-tracer: Drop the useless nmi protection
The function graph tracer used to have a protection against NMI
while entering a function entry tracing. But this is useless now,
this tracer is reentrant and the ring buffer supports the NMI tracing.
We can then drop this protection.
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Diffstat (limited to 'arch/x86/kernel/ftrace.c')
| -rw-r--r-- | arch/x86/kernel/ftrace.c | 4 |
1 files changed, 0 insertions, 4 deletions
diff --git a/arch/x86/kernel/ftrace.c b/arch/x86/kernel/ftrace.c index d94e1ea3b9fe..8e9663413b7f 100644 --- a/arch/x86/kernel/ftrace.c +++ b/arch/x86/kernel/ftrace.c @@ -417,10 +417,6 @@ void prepare_ftrace_return(unsigned long *parent, unsigned long self_addr, unsigned long return_hooker = (unsigned long) &return_to_handler; - /* Nmi's are currently unsupported */ - if (unlikely(in_nmi())) - return; - if (unlikely(atomic_read(¤t->tracing_graph_pause))) return; |