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| author | Ingo Molnar <mingo@elte.hu> | 2011-05-01 19:09:39 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2011-05-01 19:09:39 +0200 |
| commit | 809435ff4f43a5c0cb0201b3b89176253d5ade18 (patch) | |
| tree | 607d673c02117656a956b54dd2bb80fe94edea61 /kernel/trace | |
| parent | Merge branch 'tip/perf/core' of git://git.kernel.org/pub/scm/linux/kernel/git... (diff) | |
| parent | ftrace: Only update the function code on write to filter files (diff) | |
| download | linux-809435ff4f43a5c0cb0201b3b89176253d5ade18.tar.xz linux-809435ff4f43a5c0cb0201b3b89176253d5ade18.zip | |
Merge branch 'tip/perf/urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-2.6-trace into perf/core
Diffstat (limited to 'kernel/trace')
| -rw-r--r-- | kernel/trace/Kconfig | 2 | ||||
| -rw-r--r-- | kernel/trace/ftrace.c | 12 |
2 files changed, 8 insertions, 6 deletions
diff --git a/kernel/trace/Kconfig b/kernel/trace/Kconfig index 61d7d59f4a1a..2ad39e556cb4 100644 --- a/kernel/trace/Kconfig +++ b/kernel/trace/Kconfig @@ -141,7 +141,7 @@ if FTRACE config FUNCTION_TRACER bool "Kernel Function Tracer" depends on HAVE_FUNCTION_TRACER - select FRAME_POINTER if !ARM_UNWIND && !S390 + select FRAME_POINTER if !ARM_UNWIND && !S390 && !MICROBLAZE select KALLSYMS select GENERIC_TRACER select CONTEXT_SWITCH_TRACER diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c index ee24fa1935ac..666880d051ef 100644 --- a/kernel/trace/ftrace.c +++ b/kernel/trace/ftrace.c @@ -2413,14 +2413,16 @@ ftrace_regex_release(struct inode *inode, struct file *file, int enable) ftrace_match_records(parser->buffer, parser->idx, enable); } - mutex_lock(&ftrace_lock); - if (ftrace_start_up && ftrace_enabled) - ftrace_run_update_code(FTRACE_ENABLE_CALLS); - mutex_unlock(&ftrace_lock); - trace_parser_put(parser); kfree(iter); + if (file->f_mode & FMODE_WRITE) { + mutex_lock(&ftrace_lock); + if (ftrace_start_up && ftrace_enabled) + ftrace_run_update_code(FTRACE_ENABLE_CALLS); + mutex_unlock(&ftrace_lock); + } + mutex_unlock(&ftrace_regex_lock); return 0; } |