diff options
| author | Dmitry Safonov <0x7f454c46@gmail.com> | 2015-11-06 22:07:26 +0300 |
|---|---|---|
| committer | Steven Rostedt <rostedt@goodmis.org> | 2015-11-07 21:25:14 +0300 |
| commit | 03e88ae6b369da2a26a6e09ad165e57d210789cd (patch) | |
| tree | 263c536f2003d6cd3779b85cdf4988ab9b88c0ca /kernel/trace/trace.h | |
| parent | 8b1291994d8e5e621a8af7e165b106e50d04bbf1 (diff) | |
| download | linux-03e88ae6b369da2a26a6e09ad165e57d210789cd.tar.xz | |
tracing: Remove unused ftrace_cpu_disabled per cpu variable
Since the ring buffer is lockless, there is no need to disable ftrace on
CPU. And no one doing so: after commit 68179686ac67cb ("tracing: Remove
ftrace_disable/enable_cpu()") ftrace_cpu_disabled stays the same after
initialization, nothing changes it.
ftrace_cpu_disabled shouldn't be used by any external module since it
disables only function and graph_function tracers but not any other
tracer.
Link: http://lkml.kernel.org/r/1446836846-22239-1-git-send-email-0x7f454c46@gmail.com
Signed-off-by: Dmitry Safonov <0x7f454c46@gmail.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Diffstat (limited to 'kernel/trace/trace.h')
| -rw-r--r-- | kernel/trace/trace.h | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/kernel/trace/trace.h b/kernel/trace/trace.h index dd7620802e72..919d9d07686f 100644 --- a/kernel/trace/trace.h +++ b/kernel/trace/trace.h @@ -667,7 +667,6 @@ extern int DYN_FTRACE_TEST_NAME2(void); extern bool ring_buffer_expanded; extern bool tracing_selftest_disabled; -DECLARE_PER_CPU(int, ftrace_cpu_disabled); #ifdef CONFIG_FTRACE_STARTUP_TEST extern int trace_selftest_startup_function(struct tracer *trace, |