linux-kernel - Re: [PATCH] arm, hw-breakpoint: Remove superfluous SMP function call

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Date:	Mon, 4 Apr 2016 17:08:01 +0300
From:	Sergei Shtylyov <sergei.shtylyov@...entembedded.com>
To:	Anna-Maria Gleixner <anna-maria@...utronix.de>,
	linux-kernel@...r.kernel.org
Cc:	Mark Rutland <mark.rutland@....com>,
	Russell King <linux@....linux.org.uk>,
	Will Deacon <will.deacon@....com>, rt@...utronix.de,
	linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH] arm, hw-breakpoint: Remove superfluous SMP function call

On 4/4/2016 1:32 PM, Anna-Maria Gleixner wrote:

> Since commit 1cf4f629d9d2 ("cpu/hotplug: Move online calls to
> hotplugged cpu") it is ensured that callbacks of CPU_ONLINE and
> CPU_DOWN_PREPARE are processed on the hotplugged cpu. Due to this SMP
> function calls are no longer required.
>
> Replace smp_call_function_single() with a direct call of
> reset_ctrl_regs(). To keep the calling convention, interrupts are
> explicitely disabled around the call.

    Same typo as in ARM64 patch.

> Cc: Will Deacon <will.deacon@....com>
> Cc: Mark Rutland <mark.rutland@....com>
> Cc: Russell King <linux@....linux.org.uk>
> Cc: linux-arm-kernel@...ts.infradead.org
> Signed-off-by: Anna-Maria Gleixner <anna-maria@...utronix.de>
[...]

MBR, Sergei