linux-kernel - Re: [PATCH] tracing: arm: arm64: Hide trace events ipi_raise, ipi_entry and ipi

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Message-ID: <aH_l4cCzzGB5Cd1K@arm.com>
Date: Tue, 22 Jul 2025 20:26:25 +0100
From: Catalin Marinas <catalin.marinas@....com>
To: Steven Rostedt <rostedt@...dmis.org>
Cc: LKML <linux-kernel@...r.kernel.org>,
	Linux Trace Kernel <linux-trace-kernel@...r.kernel.org>,
	linux-arm-kernel@...ts.infradead.org,
	Masami Hiramatsu <mhiramat@...nel.org>,
	Mathieu Desnoyers <mathieu.desnoyers@...icios.com>,
	Will Deacon <will@...nel.org>, Russell King <linux@...linux.org.uk>,
	Mark Rutland <mark.rutland@....com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Valentin Schneider <vschneid@...hat.com>,
	Nicolas Pitre <nico@...xnic.net>,
	Peter Zijlstra <peterz@...radead.org>
Subject: Re: [PATCH] tracing: arm: arm64: Hide trace events ipi_raise,
 ipi_entry and ipi_exit

On Tue, Jul 22, 2025 at 10:37:14AM -0400, Steven Rostedt wrote:
> From: Steven Rostedt <rostedt@...dmis.org>
> 
> The ipi tracepoints are mostly generic, but the tracepoints ipi_raise,
> ipi_entry and ipi_exit are only used by arm and arm64. This means these
> trace events are wasting memory in all the other architectures that do not
> use them.
> 
> Add CONFIG_HAVE_EXTRA_IPI_TRACEPOINTS and have arm and arm64 select it to
> enable these trace events. The config makes it easy if other architectures
> decide to trace these as well.
> 
> Signed-off-by: Steven Rostedt (Google) <rostedt@...dmis.org>

Acked-by: Catalin Marinas <catalin.marinas@....com>