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| author | Valentin Schneider <vschneid@redhat.com> | 2023-03-07 14:35:52 +0000 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2023-03-24 11:01:26 +0100 |
| commit | 56eb0598c7a30c76009a082d3213486d6a013df0 (patch) | |
| tree | 9085376ba67bad1b8f85c2084a33c9714b73d74a /include/trace | |
| parent | 203e435844734cfa503cd1755f35db2514db5cca (diff) | |
| download | linux-stable-56eb0598c7a30c76009a082d3213486d6a013df0.tar.gz linux-stable-56eb0598c7a30c76009a082d3213486d6a013df0.tar.bz2 linux-stable-56eb0598c7a30c76009a082d3213486d6a013df0.zip | |
trace: Add trace_ipi_send_cpumask()
trace_ipi_raise() is unsuitable for generically tracing IPI sources due to
its "reason" argument being an uninformative string (on arm64 all you get
is "Function call interrupts" for SMP calls).
Add a variant of it that exports a target cpumask, a callsite and a callback.
Signed-off-by: Valentin Schneider <vschneid@redhat.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Link: https://lore.kernel.org/r/20230307143558.294354-2-vschneid@redhat.com
Diffstat (limited to 'include/trace')
| -rw-r--r-- | include/trace/events/ipi.h | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/include/trace/events/ipi.h b/include/trace/events/ipi.h index 0be71dad6ec0..b1125dc27682 100644 --- a/include/trace/events/ipi.h +++ b/include/trace/events/ipi.h @@ -35,6 +35,28 @@ TRACE_EVENT(ipi_raise, TP_printk("target_mask=%s (%s)", __get_bitmask(target_cpus), __entry->reason) ); +TRACE_EVENT(ipi_send_cpumask, + + TP_PROTO(const struct cpumask *cpumask, unsigned long callsite, void *callback), + + TP_ARGS(cpumask, callsite, callback), + + TP_STRUCT__entry( + __cpumask(cpumask) + __field(void *, callsite) + __field(void *, callback) + ), + + TP_fast_assign( + __assign_cpumask(cpumask, cpumask_bits(cpumask)); + __entry->callsite = (void *)callsite; + __entry->callback = callback; + ), + + TP_printk("cpumask=%s callsite=%pS callback=%pS", + __get_cpumask(cpumask), __entry->callsite, __entry->callback) +); + DECLARE_EVENT_CLASS(ipi_handler, TP_PROTO(const char *reason), |