iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

trace: Add trace_ipi_send_cpumask()

Browse Source 
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
This commit is contained in:
Valentin Schneider 2023-03-07 14:35:52 +00:00 committed by Peter Zijlstra
parent 203e435844
commit 56eb0598c7
1 changed files with 22 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

22
include/trace/events/ipi.h
View File

@ -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),