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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2021-11-03 09:08:47 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2021-11-03 09:08:47 -0700 |
| commit | e1fd0b2acde6359a598dd4aeb158713fc0a361b2 (patch) | |
| tree | 7ff74e662aab78e39fefdbcb904b85e87e1a8d4f /samples | |
| parent | 25edbc383b72c2364c7b339245c1c5db84e615e1 (diff) | |
| parent | 67d4f6e3bf5dddced226fbf19704cdbbb0c98847 (diff) | |
Merge tag 'trace-v5.16-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace
Pull more tracing updates from Steven Rostedt:
- osnoise and timerlat updates that will work with the RTLA tool
(Real-Time Linux Analysis).
Specifically it disconnects the work load (threads that look for
latency) from the tracing instances attached to them, allowing for
more than one instance to retrieve data from the work load.
- Optimization on division in the trace histogram trigger code to use
shift and multiply when possible. Also added documentation.
- Fix prototype to my_direct_func in direct ftrace trampoline sample
code.
* tag 'trace-v5.16-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
ftrace/samples: Add missing prototype for my_direct_func
tracing/selftests: Add tests for hist trigger expression parsing
tracing/histogram: Document hist trigger variables
tracing/histogram: Update division by 0 documentation
tracing/histogram: Optimize division by constants
tracing/osnoise: Remove PREEMPT_RT ifdefs from inside functions
tracing/osnoise: Remove STACKTRACE ifdefs from inside functions
tracing/osnoise: Allow multiple instances of the same tracer
tracing/osnoise: Remove TIMERLAT ifdefs from inside functions
tracing/osnoise: Support a list of trace_array *tr
tracing/osnoise: Use start/stop_per_cpu_kthreads() on osnoise_cpus_write()
tracing/osnoise: Split workload start from the tracer start
tracing/osnoise: Improve comments about barrier need for NMI callbacks
tracing/osnoise: Do not follow tracing_cpumask
Diffstat (limited to 'samples')
| -rw-r--r-- | samples/ftrace/ftrace-direct-multi.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/samples/ftrace/ftrace-direct-multi.c b/samples/ftrace/ftrace-direct-multi.c index 2a5b1fb7ac14..b6d7806b400e 100644 --- a/samples/ftrace/ftrace-direct-multi.c +++ b/samples/ftrace/ftrace-direct-multi.c @@ -5,6 +5,8 @@ #include <linux/ftrace.h> #include <linux/sched/stat.h> +extern void my_direct_func(unsigned long ip); + void my_direct_func(unsigned long ip) { trace_printk("ip %lx\n", ip); |