linux-kernel - [PATCH v2 2/9] drivers/perf: hisi: Export hisi_uncore_pmu

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Message-ID: <20250821135049.2010220-3-wangyushan12@huawei.com>
Date: Thu, 21 Aug 2025 21:50:42 +0800
From: Yushan Wang <wangyushan12@...wei.com>
To: <will@...nel.org>, <mark.rutland@....com>,
	<linux-arm-kernel@...ts.infradead.org>, <linux-kernel@...r.kernel.org>
CC: <robin.murphy@....com>, <yangyicong@...wei.com>,
	<Jonathan.Cameron@...wei.com>, <liuyonglong@...wei.com>,
	<wanghuiqiang@...wei.com>, <prime.zeng@...ilicon.com>,
	<wangyushan12@...wei.com>, <hejunhao3@...artners.com>
Subject: [PATCH v2 2/9] drivers/perf: hisi: Export hisi_uncore_pmu_isr()

From: Yicong Yang <yangyicong@...ilicon.com>

Currently Uncore PMU framework assume one PMU device only have one
interrupt and will help register the interrupt handler. It cannot
support a PMU with multiple interrupt resources.  An uncore PMU may
have multiple interrupts that can share the same handler.  Export
hisi_uncore_pmu_isr() to allow drivers register the irq handler by
their own routine.

Signed-off-by: Yicong Yang <yangyicong@...ilicon.com>
Signed-off-by: Yushan Wang <wangyushan12@...wei.com>
---
 drivers/perf/hisilicon/hisi_uncore_pmu.c | 3 ++-
 drivers/perf/hisilicon/hisi_uncore_pmu.h | 1 +
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/perf/hisilicon/hisi_uncore_pmu.c b/drivers/perf/hisilicon/hisi_uncore_pmu.c
index 6594d64b03a9..de71dcf11653 100644
--- a/drivers/perf/hisilicon/hisi_uncore_pmu.c
+++ b/drivers/perf/hisilicon/hisi_uncore_pmu.c
@@ -149,7 +149,7 @@ static void hisi_uncore_pmu_clear_event_idx(struct hisi_pmu *hisi_pmu, int idx)
 	clear_bit(idx, hisi_pmu->pmu_events.used_mask);
 }
 
-static irqreturn_t hisi_uncore_pmu_isr(int irq, void *data)
+irqreturn_t hisi_uncore_pmu_isr(int irq, void *data)
 {
 	struct hisi_pmu *hisi_pmu = data;
 	struct perf_event *event;
@@ -178,6 +178,7 @@ static irqreturn_t hisi_uncore_pmu_isr(int irq, void *data)
 
 	return IRQ_HANDLED;
 }
+EXPORT_SYMBOL_NS_GPL(hisi_uncore_pmu_isr, "HISI_PMU");
 
 int hisi_uncore_pmu_init_irq(struct hisi_pmu *hisi_pmu,
 			     struct platform_device *pdev)
diff --git a/drivers/perf/hisilicon/hisi_uncore_pmu.h b/drivers/perf/hisilicon/hisi_uncore_pmu.h
index 6186b232f454..02fa022925d4 100644
--- a/drivers/perf/hisilicon/hisi_uncore_pmu.h
+++ b/drivers/perf/hisilicon/hisi_uncore_pmu.h
@@ -165,6 +165,7 @@ int hisi_uncore_pmu_offline_cpu(unsigned int cpu, struct hlist_node *node);
 ssize_t hisi_uncore_pmu_identifier_attr_show(struct device *dev,
 					     struct device_attribute *attr,
 					     char *page);
+irqreturn_t hisi_uncore_pmu_isr(int irq, void *data);
 int hisi_uncore_pmu_init_irq(struct hisi_pmu *hisi_pmu,
 			     struct platform_device *pdev);
 void hisi_uncore_pmu_init_topology(struct hisi_pmu *hisi_pmu, struct device *dev);
-- 
2.33.0