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| author | Minfei Huang <mnfhuang@gmail.com> | 2015-09-17 00:19:42 +0800 |
|---|---|---|
| committer | Steven Rostedt <rostedt@goodmis.org> | 2015-10-22 15:44:24 -0400 |
| commit | 883a1e867e0fe7c2dc2e5844ef692f80177631d5 (patch) | |
| tree | af404d70021b6563ae8df94726e441e85511298a /arch/x86/kernel/ftrace.c | |
| parent | 3061692921f2d701bb09699d16ed780903dd54e2 (diff) | |
| download | lwn-883a1e867e0fe7c2dc2e5844ef692f80177631d5.tar.gz lwn-883a1e867e0fe7c2dc2e5844ef692f80177631d5.zip | |
ftrace: Calculate the correct dyn_ftrace number to report to the userspace
Now, ftrace only calculate the dyn_ftrace number in the adding
breakpoint loop, not in adding update and finish update loop.
Calculate the correct dyn_ftrace, once ftrace reports the failure message
to the userspace.
Link: http://lkml.kernel.org/r/1442420382-13130-1-git-send-email-mnfhuang@gmail.com
Signed-off-by: Minfei Huang <mnfhuang@gmail.com>
Signed-off-by: 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, 4 insertions, 0 deletions
diff --git a/arch/x86/kernel/ftrace.c b/arch/x86/kernel/ftrace.c index 8b7b0a51e742..311bcf338f07 100644 --- a/arch/x86/kernel/ftrace.c +++ b/arch/x86/kernel/ftrace.c @@ -556,6 +556,7 @@ void ftrace_replace_code(int enable) run_sync(); report = "updating code"; + count = 0; for_ftrace_rec_iter(iter) { rec = ftrace_rec_iter_record(iter); @@ -563,11 +564,13 @@ void ftrace_replace_code(int enable) ret = add_update(rec, enable); if (ret) goto remove_breakpoints; + count++; } run_sync(); report = "removing breakpoints"; + count = 0; for_ftrace_rec_iter(iter) { rec = ftrace_rec_iter_record(iter); @@ -575,6 +578,7 @@ void ftrace_replace_code(int enable) ret = finish_update(rec, enable); if (ret) goto remove_breakpoints; + count++; } run_sync(); |