From: Steven Rostedt <rostedt@goodmis.org>
To: Marc Zyngier <maz@kernel.org>
Cc: richard clark <richard.xnu.clark@gmail.com>,
Mark Rutland <mark.rutland@arm.com>,
will@kernel.org, linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
"Russell King (Oracle)" <linux@armlinux.org.uk>,
Linus Torvalds <torvalds@linux-foundation.org>
Subject: Re: Will smp_call_function_single(cpu, ...) broadcast IPI to all other cpus?
Date: Thu, 27 Jun 2024 10:12:07 -0400 [thread overview]
Message-ID: <20240627101207.0bbbead0@rorschach.local.home> (raw)
In-Reply-To: <86pls2isal.wl-maz@kernel.org>
On Thu, 27 Jun 2024 11:38:58 +0100
Marc Zyngier <maz@kernel.org> wrote:
> You may want to enable stack trace recording and find out for yourself
> where these ipi_raise() calls are coming from.
Try trace-cmd:
# trace-cmd start -e ipi_raise -R 'stacktrace if reason=="Function call interrupts"'
# taskset -c 0 insmod /kmods/ipi_test.ko
# trace-cmd stop
# trace-cmd show
-- Steve
next prev parent reply other threads:[~2024-06-27 14:12 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-06-27 9:26 Will smp_call_function_single(cpu, ...) broadcast IPI to all other cpus? richard clark
2024-06-27 10:38 ` Marc Zyngier
2024-06-27 14:12 ` Steven Rostedt [this message]
2024-06-28 1:57 ` richard clark
2024-06-28 10:21 ` richard clark
2024-06-28 12:41 ` Steven Rostedt
2024-06-29 5:41 ` richard clark
2024-06-28 13:13 ` Russell King (Oracle)
2024-06-29 5:38 ` richard clark
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