diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2021-06-18 10:57:09 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2021-06-18 10:57:09 -0700 |
| commit | 89fec7420354ff2d23ed46e62aaea402587efd1c (patch) | |
| tree | a26c8bce15f0047cfb2174cfa2f1a29a0b45bdfd /kernel/trace/trace_clock.c | |
| parent | 0f4022a490ad68846062186f481defd53be69743 (diff) | |
| parent | 89529d8b8f8daf92d9979382b8d2eb39966846ea (diff) | |
Merge tag 'trace-v5.13-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace
Pull tracing fixes from Steven Rostedt:
- Have recordmcount check for valid st_shndx otherwise some archs may
have invalid references for the mcount location.
- Two fixes done for mapping pids to task names. Traces were not
showing the names of tasks when they should have.
- Fix to trace_clock_global() to prevent it from going backwards
* tag 'trace-v5.13-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
tracing: Do no increment trace_clock_global() by one
tracing: Do not stop recording comms if the trace file is being read
tracing: Do not stop recording cmdlines when tracing is off
recordmcount: Correct st_shndx handling
Diffstat (limited to 'kernel/trace/trace_clock.c')
| -rw-r--r-- | kernel/trace/trace_clock.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/kernel/trace/trace_clock.c b/kernel/trace/trace_clock.c index c1637f90c8a3..4702efb00ff2 100644 --- a/kernel/trace/trace_clock.c +++ b/kernel/trace/trace_clock.c @@ -115,9 +115,9 @@ u64 notrace trace_clock_global(void) prev_time = READ_ONCE(trace_clock_struct.prev_time); now = sched_clock_cpu(this_cpu); - /* Make sure that now is always greater than prev_time */ + /* Make sure that now is always greater than or equal to prev_time */ if ((s64)(now - prev_time) < 0) - now = prev_time + 1; + now = prev_time; /* * If in an NMI context then dont risk lockups and simply return @@ -131,7 +131,7 @@ u64 notrace trace_clock_global(void) /* Reread prev_time in case it was already updated */ prev_time = READ_ONCE(trace_clock_struct.prev_time); if ((s64)(now - prev_time) < 0) - now = prev_time + 1; + now = prev_time; trace_clock_struct.prev_time = now; |