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authorValentin Schneider <vschneid@redhat.com>2023-03-07 14:35:53 +0000
committerPeter Zijlstra <peterz@infradead.org>2023-03-24 11:01:27 +0100
commitcc9cb0a71725aa8dd8d8f534a9b562bbf7981f75 (patch)
treecfbb5e1471f708af0d9769c1c3e448e52435fcd4 /kernel/smp.c
parent56eb0598c7a30c76009a082d3213486d6a013df0 (diff)
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.c2
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"