linux-kernel - Re: [PATCH] perf: arm_dsu_pmu: convert to bitmap_from

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Message-ID: <6521819f-6812-7e70-8b8d-3828992ba551@arm.com>
Date:   Mon, 8 Jan 2018 14:56:24 +0000
From:   Suzuki K Poulose <Suzuki.Poulose@....com>
To:     Arnd Bergmann <arnd@...db.de>,
        Andrew Morton <akpm@...ux-foundation.org>
Cc:     Yury Norov <ynorov@...iumnetworks.com>,
        Will Deacon <will.deacon@....com>,
        Mark Rutland <mark.rutland@....com>,
        Jonathan Cameron <Jonathan.Cameron@...wei.com>,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] perf: arm_dsu_pmu: convert to bitmap_from_arr32

On 08/01/18 12:48, Arnd Bergmann wrote:
> The bitmap_from_u32array() interface got replaced in a global
> change, but the arm_dsu_pmu driver adds another instance,
> resulting in a build failure:
> 
> drivers/perf/arm_dsu_pmu.c: In function 'dsu_pmu_probe_pmu':
> drivers/perf/arm_dsu_pmu.c:661:2: error: implicit declaration of function 'bitmap_from_u32array'; did you mean 'bitmap_from_arr32'? [-Werror=implicit-function-declaration]
> 
> This changes the new instance accordingly.
> 
> Fixes: mmotm ("bitmap: replace bitmap_{from,to}_u32array")
> Fixes: 7520fa99246d ("perf: ARM DynamIQ Shared Unit PMU support")
> Signed-off-by: Arnd Bergmann <arnd@...db.de>
> ---
> The global change is currently in linux-mm, so it should be
> possible to just fold this patch into it, without causing
> extra work.
> ---
>   drivers/perf/arm_dsu_pmu.c | 6 ++----
>   1 file changed, 2 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/perf/arm_dsu_pmu.c b/drivers/perf/arm_dsu_pmu.c
> index 37c0526c93d5..e2700888a7d9 100644
> --- a/drivers/perf/arm_dsu_pmu.c
> +++ b/drivers/perf/arm_dsu_pmu.c
> @@ -658,10 +658,8 @@ static void dsu_pmu_probe_pmu(struct dsu_pmu *dsu_pmu)
>   		return;
>   	cpmceid[0] = __dsu_pmu_read_pmceid(0);
>   	cpmceid[1] = __dsu_pmu_read_pmceid(1);
> -	bitmap_from_u32array(dsu_pmu->cpmceid_bitmap,
> -				DSU_PMU_MAX_COMMON_EVENTS,
> -				cpmceid,
> -				ARRAY_SIZE(cpmceid));
> +	bitmap_from_arr32(dsu_pmu->cpmceid_bitmap, cpmceid,
> +			  DSU_PMU_MAX_COMMON_EVENTS);
>   }
>   
>   static void dsu_pmu_set_active_cpu(int cpu, struct dsu_pmu *dsu_pmu)
> 

Arnd,

Thanks for fixing this. FWIW,

Acked-by: Suzuki K Poulose <suzuki.poulose@....com>