linux-kernel - Re: [PATCH 6/7] perf/x86/amd/core: Add PerfMonV2 overflow handling

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Date:   Tue, 22 Mar 2022 15:06:49 +0800
From:   Like Xu <like.xu.linux@...il.com>
To:     Sandipan Das <sandipan.das@....com>
Cc:     peterz@...radead.org, bp@...en8.de, dave.hansen@...ux.intel.com,
        acme@...nel.org, mark.rutland@....com,
        alexander.shishkin@...ux.intel.com, namhyung@...nel.org,
        jolsa@...nel.org, tglx@...utronix.de, mingo@...hat.com,
        pbonzini@...hat.com, jmattson@...gle.com, eranian@...gle.com,
        ananth.narayan@....com, ravi.bangoria@....com,
        santosh.shukla@....com,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        linux-perf-users@...r.kernel.org, x86@...nel.org
Subject: Re: [PATCH 6/7] perf/x86/amd/core: Add PerfMonV2 overflow handling

On 17/3/2022 2:28 pm, Sandipan Das wrote:
> +		val = x86_perf_event_update(event);

The variable 'val' set but not used.

> +		mask = BIT_ULL(idx);
> +
> +		if (!(status & mask))

Needed here ?

> +			continue;