linux-kernel - [PATCH v2 03/30] perf/hisi-uncore: Assign parents for event

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Message-ID: <20240412161057.14099-4-Jonathan.Cameron@huawei.com>
Date: Fri, 12 Apr 2024 17:10:30 +0100
From: Jonathan Cameron <Jonathan.Cameron@...wei.com>
To: Mark Rutland <mark.rutland@....com>, Peter Zijlstra
	<peterz@...radead.org>, Ingo Molnar <mingo@...hat.com>, Arnaldo Carvalho de
 Melo <acme@...nel.org>, Will Deacon <will@...nel.org>,
	<linux-kernel@...r.kernel.org>, <linux-arm-kernel@...ts.infradead.org>,
	<gregkh@...uxfoundation.org>
CC: <linuxarm@...wei.com>, Shaokun Zhang <zhangshaokun@...ilicon.com>, Yicong
 Yang <yangyicong@...ilicon.com>, Jiucheng Xu <jiucheng.xu@...ogic.com>,
	Khuong Dinh <khuong@...amperecomputing.com>, Atish Patra
	<atishp@...shpatra.org>, Anup Patel <anup@...infault.org>, Andy Gross
	<agross@...nel.org>, Bjorn Andersson <andersson@...nel.org>, Frank Li
	<Frank.li@....com>, Shuai Xue <xueshuai@...ux.alibaba.com>, Vineet Gupta
	<vgupta@...nel.org>, Shawn Guo <shawnguo@...nel.org>, Fenghua Yu
	<fenghua.yu@...el.com>, Dave Jiang <dave.jiang@...el.com>, Wu Hao
	<hao.wu@...el.com>, Tom Rix <trix@...hat.com>, <linux-fpga@...r.kernel.org>,
	Suzuki K Poulose <suzuki.poulose@....com>, Liang Kan
	<kan.liang@...ux.intel.com>
Subject: [PATCH v2 03/30] perf/hisi-uncore: Assign parents for event_source devices

Currently the PMU device appears directly under /sys/devices/
Only root busses should appear there, so instead assign the pmu->dev
parent to be the platform device.

Link: https://lore.kernel.org/linux-cxl/ZCLI9A40PJsyqAmq@kroah.com/
Reviewed-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Reviewed-by: Yicong Yang <yangyicong@...ilicon.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@...wei.com>
---
 drivers/perf/hisilicon/hisi_uncore_pmu.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/perf/hisilicon/hisi_uncore_pmu.c b/drivers/perf/hisilicon/hisi_uncore_pmu.c
index 04031450d5fe..5519965600dc 100644
--- a/drivers/perf/hisilicon/hisi_uncore_pmu.c
+++ b/drivers/perf/hisilicon/hisi_uncore_pmu.c
@@ -538,6 +538,7 @@ void hisi_pmu_init(struct hisi_pmu *hisi_pmu, struct module *module)
 	struct pmu *pmu = &hisi_pmu->pmu;
 
 	pmu->module             = module;
+	pmu->parent             = hisi_pmu->dev;
 	pmu->task_ctx_nr        = perf_invalid_context;
 	pmu->event_init         = hisi_uncore_pmu_event_init;
 	pmu->pmu_enable         = hisi_uncore_pmu_enable;
-- 
2.39.2