linux-kernel - Re: [PATCH] arm_pmu: Drop redundant armpmu->map_event() in armpmu_event

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Message-ID: <20221201174534.GA28865@willie-the-truck>
Date:   Thu, 1 Dec 2022 17:45:35 +0000
From:   Will Deacon <will@...nel.org>
To:     Anshuman Khandual <anshuman.khandual@....com>
Cc:     linux-arm-kernel@...ts.infradead.org, mark.rutland@....com,
        Catalin Marinas <catalin.marinas@....com>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] arm_pmu: Drop redundant armpmu->map_event() in
 armpmu_event_init()

On Wed, Nov 30, 2022 at 02:03:50PM +0530, Anshuman Khandual wrote:
> __hw_perf_event_init() already calls armpmu->map_event() callback, and also
> returns its error code including -ENOENT, along with a debug callout. Hence
> an additional armpmu->map_event() check for -ENOENT is redundant.
> 
> Cc: Catalin Marinas <catalin.marinas@....com>
> Cc: Will Deacon <will@...nel.org>
> Cc: Mark Rutland <mark.rutland@....com>
> Cc: linux-arm-kernel@...ts.infradead.org
> Cc: linux-kernel@...r.kernel.org
> Signed-off-by: Anshuman Khandual <anshuman.khandual@....com>
> ---
> This applies on v6.1-rc6

Doesn't apply against for-next/perf

Will