linux-kernel - Re: [PATCH v2] hwtracing: hisi_ptt: Move type check to the beginning of hisi_ptt_pmu_event

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Date: Mon, 26 Feb 2024 14:35:18 +0000
From: Suzuki K Poulose <suzuki.poulose@....com>
To: mathieu.poirier@...aro.org,
	Yang Jihong <yangjihong1@...wei.com>,
	alexander.shishkin@...ux.intel.com,
	john.garry@...wei.com,
	jonathan.cameron@...wei.com,
	yangyicong@...ilicon.com,
	linux-kernel@...r.kernel.org
Cc: Suzuki K Poulose <suzuki.poulose@....com>,
	yangyicong@...wei.com,
	wangkefeng.wang@...wei.com
Subject: Re: [PATCH v2] hwtracing: hisi_ptt: Move type check to the beginning of hisi_ptt_pmu_event_init()

On Mon, 8 Jan 2024 12:19:06 +0000, Yang Jihong wrote:
> When perf_init_event() calls perf_try_init_event() to init pmu driver,
> searches for the next pmu driver only when the return value is -ENOENT.
> Therefore, hisi_ptt_pmu_event_init() needs to check the type at the
> beginning of the function.
> Otherwise, in the case of perf-task mode, perf_try_init_event() returns
> -EOPNOTSUPP and skips subsequent pmu drivers, causes perf_init_event() to
> fail.
> 
> [...]

Applied, thanks!

[1/1] hwtracing: hisi_ptt: Move type check to the beginning of hisi_ptt_pmu_event_init()
      https://git.kernel.org/coresight/c/06226d120a28

Best regards,
-- 
Suzuki K Poulose <suzuki.poulose@....com>