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| author | Valentin Schneider <vschneid@redhat.com> | 2023-03-07 14:35:53 +0000 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2023-03-24 11:01:27 +0100 |
| commit | cc9cb0a71725aa8dd8d8f534a9b562bbf7981f75 (patch) | |
| tree | cfbb5e1471f708af0d9769c1c3e448e52435fcd4 /kernel/smp.c | |
| parent | 56eb0598c7a30c76009a082d3213486d6a013df0 (diff) | |
| download | linux-cc9cb0a71725aa8dd8d8f534a9b562bbf7981f75.tar.gz linux-cc9cb0a71725aa8dd8d8f534a9b562bbf7981f75.tar.bz2 linux-cc9cb0a71725aa8dd8d8f534a9b562bbf7981f75.zip | |
sched, smp: Trace IPIs sent via send_call_function_single_ipi()
send_call_function_single_ipi() is the thing that sends IPIs at the bottom
of smp_call_function*() via either generic_exec_single() or
smp_call_function_many_cond(). Give it an IPI-related tracepoint.
Note that this ends up tracing any IPI sent via __smp_call_single_queue(),
which covers __ttwu_queue_wakelist() and irq_work_queue_on() "for free".
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>
Acked-by: Ingo Molnar <mingo@kernel.org>
Link: https://lore.kernel.org/r/20230307143558.294354-3-vschneid@redhat.com
Diffstat (limited to 'kernel/smp.c')
| -rw-r--r-- | kernel/smp.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/kernel/smp.c b/kernel/smp.c index 298ba7570621..770e879a7274 100644 --- a/kernel/smp.c +++ b/kernel/smp.c @@ -26,6 +26,8 @@ #include <linux/sched/debug.h> #include <linux/jump_label.h> +#include <trace/events/ipi.h> + #include "smpboot.h" #include "sched/smp.h" |