From 56eb0598c7a30c76009a082d3213486d6a013df0 Mon Sep 17 00:00:00 2001 From: Valentin Schneider Date: Tue, 7 Mar 2023 14:35:52 +0000 Subject: 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 Signed-off-by: Peter Zijlstra (Intel) Reviewed-by: Steven Rostedt (Google) Link: https://lore.kernel.org/r/20230307143558.294354-2-vschneid@redhat.com --- include/trace/events/ipi.h | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) (limited to 'include/trace') 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), -- cgit v1.2.3 From 68e2d17c9eb311ab59aeb6d0c38aad8985fa2596 Mon Sep 17 00:00:00 2001 From: Peter Zijlstra Date: Wed, 22 Mar 2023 11:28:36 +0100 Subject: trace: Add trace_ipi_send_cpu() Because copying cpumasks around when targeting a single CPU is a bit daft... Tested-and-reviewed-by: Valentin Schneider Signed-off-by: Peter Zijlstra (Intel) Link: https://lkml.kernel.org/r/20230322103004.GA571242%40hirez.programming.kicks-ass.net --- include/trace/events/ipi.h | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) (limited to 'include/trace') diff --git a/include/trace/events/ipi.h b/include/trace/events/ipi.h index b1125dc27682..3de9bfc982ce 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_cpu, + + TP_PROTO(const unsigned int cpu, unsigned long callsite, void *callback), + + TP_ARGS(cpu, callsite, callback), + + TP_STRUCT__entry( + __field(unsigned int, cpu) + __field(void *, callsite) + __field(void *, callback) + ), + + TP_fast_assign( + __entry->cpu = cpu; + __entry->callsite = (void *)callsite; + __entry->callback = callback; + ), + + TP_printk("cpu=%u callsite=%pS callback=%pS", + __entry->cpu, __entry->callsite, __entry->callback) +); + TRACE_EVENT(ipi_send_cpumask, TP_PROTO(const struct cpumask *cpumask, unsigned long callsite, void *callback), -- cgit v1.2.3