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In-Reply-To: <20230710154328.19574-1-eric.lin@sifive.com>
References: <20230710154328.19574-1-eric.lin@sifive.com>
Subject: Re: [PATCH] perf: RISC-V: Remove PERF_HES_STOPPED flag checking in
 riscv_pmu_start()
Message-Id: <168917713751.21773.4886524771952268051.b4-ty@rivosinc.com>
Date:   Wed, 12 Jul 2023 08:52:17 -0700
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Cc:     greentime.hu@sifive.com, vincent.chen@sifive.com
From:   Palmer Dabbelt <palmer@rivosinc.com>
To:     atishp@atishpatra.org, anup@brainfault.org,
        Will Deacon <will@kernel.org>,
        Mark Rutland <mark.rutland@arm.com>,
        Palmer Dabbelt <palmer@dabbelt.com>,
        linux-riscv@lists.infradead.org,
        linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org,
        Eric Lin <eric.lin@sifive.com>
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On Mon, 10 Jul 2023 15:43:28 +0000, Eric Lin wrote:
> Since commit 096b52fd2bb4 ("perf: RISC-V: throttle perf events") the
> perf_sample_event_took() function was added to report time spent in
> overflow interrupts. If the interrupt takes too long, the perf framework
> will lower the sysctl_perf_event_sample_rate and max_samples_per_tick.
> When hwc->interrupts is larger than max_samples_per_tick, the
> hwc->interrupts will be set to MAX_INTERRUPTS, and events will be
> throttled within the __perf_event_account_interrupt() function.
> 
> [...]

Applied, thanks!

[1/1] perf: RISC-V: Remove PERF_HES_STOPPED flag checking in riscv_pmu_start()
      https://git.kernel.org/palmer/c/66843b14fb71

Best regards,
-- 
Palmer Dabbelt <palmer@rivosinc.com>