diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2018-07-27 09:50:33 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2018-07-27 09:50:33 -0700 |
| commit | 3ebb6fb03dad87cfd74d5bcd31b9dbcf3c82c89c (patch) | |
| tree | 6ed7e28d6cb3f6e935c0abcfa9dcbec5d28dd5f2 /tools | |
| parent | f636d300cdd6c5ff30662feb2149640eee85679a (diff) | |
| parent | 3e536e222f2930534c252c1cc7ae799c725c5ff9 (diff) | |
Merge tag 'trace-v4.18-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace
Pull tracing fixes from Steven Rostedt:
"Various fixes to the tracing infrastructure:
- Fix double free when the reg() call fails in
event_trigger_callback()
- Fix anomoly of snapshot causing tracing_on flag to change
- Add selftest to test snapshot and tracing_on affecting each other
- Fix setting of tracepoint flag on error that prevents probes from
being deleted.
- Fix another possible double free that is similar to
event_trigger_callback()
- Quiet a gcc warning of a false positive unused variable
- Fix crash of partial exposed task->comm to trace events"
* tag 'trace-v4.18-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
kthread, tracing: Don't expose half-written comm when creating kthreads
tracing: Quiet gcc warning about maybe unused link variable
tracing: Fix possible double free in event_enable_trigger_func()
tracing/kprobes: Fix trace_probe flags on enable_trace_kprobe() failure
selftests/ftrace: Add snapshot and tracing_on test case
ring_buffer: tracing: Inherit the tracing setting to next ring buffer
tracing: Fix double free of event_trigger_data
Diffstat (limited to 'tools')
| -rw-r--r-- | tools/testing/selftests/ftrace/test.d/00basic/snapshot.tc | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/tools/testing/selftests/ftrace/test.d/00basic/snapshot.tc b/tools/testing/selftests/ftrace/test.d/00basic/snapshot.tc new file mode 100644 index 000000000000..3b1f45e13a2e --- /dev/null +++ b/tools/testing/selftests/ftrace/test.d/00basic/snapshot.tc @@ -0,0 +1,28 @@ +#!/bin/sh +# description: Snapshot and tracing setting +# flags: instance + +[ ! -f snapshot ] && exit_unsupported + +echo "Set tracing off" +echo 0 > tracing_on + +echo "Allocate and take a snapshot" +echo 1 > snapshot + +# Since trace buffer is empty, snapshot is also empty, but allocated +grep -q "Snapshot is allocated" snapshot + +echo "Ensure keep tracing off" +test `cat tracing_on` -eq 0 + +echo "Set tracing on" +echo 1 > tracing_on + +echo "Take a snapshot again" +echo 1 > snapshot + +echo "Ensure keep tracing on" +test `cat tracing_on` -eq 1 + +exit 0 |