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Message-Id: <20230119143619.2733236-2-vschneid@redhat.com>
Date: Thu, 19 Jan 2023 14:36:13 +0000
From: Valentin Schneider <vschneid@...hat.com>
To: linux-alpha@...r.kernel.org, linux-kernel@...r.kernel.org,
linux-snps-arc@...ts.infradead.org,
linux-arm-kernel@...ts.infradead.org, linux-csky@...r.kernel.org,
linux-hexagon@...r.kernel.org, linux-ia64@...r.kernel.org,
loongarch@...ts.linux.dev, linux-mips@...r.kernel.org,
openrisc@...ts.librecores.org, linux-parisc@...r.kernel.org,
linuxppc-dev@...ts.ozlabs.org, linux-riscv@...ts.infradead.org,
linux-s390@...r.kernel.org, linux-sh@...r.kernel.org,
sparclinux@...r.kernel.org, linux-xtensa@...ux-xtensa.org,
x86@...nel.org
Cc: Steven Rostedt <rostedt@...dmis.org>,
"Paul E. McKenney" <paulmck@...nel.org>,
Peter Zijlstra <peterz@...radead.org>,
Thomas Gleixner <tglx@...utronix.de>,
Sebastian Andrzej Siewior <bigeasy@...utronix.de>,
Juri Lelli <juri.lelli@...hat.com>,
Daniel Bristot de Oliveira <bristot@...hat.com>,
Marcelo Tosatti <mtosatti@...hat.com>,
Frederic Weisbecker <frederic@...nel.org>,
Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
Dave Hansen <dave.hansen@...ux.intel.com>,
"H. Peter Anvin" <hpa@...or.com>, Marc Zyngier <maz@...nel.org>,
Mark Rutland <mark.rutland@....com>,
Russell King <linux@...linux.org.uk>,
Nicholas Piggin <npiggin@...il.com>,
Guo Ren <guoren@...nel.org>,
"David S. Miller" <davem@...emloft.net>
Subject: [PATCH v4 1/7] 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@...hat.com>
Reviewed-by: Steven Rostedt (Google) <rostedt@...dmis.org>
---
include/trace/events/ipi.h | 22 ++++++++++++++++++++++
1 file changed, 22 insertions(+)
diff --git a/include/trace/events/ipi.h b/include/trace/events/ipi.h
index 0be71dad6ec03..b1125dc27682c 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),
--
2.31.1
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