linux-kernel - [PATCH v3 6/9] drivers/perf: Simplify EVENT ATTR macro in xgene

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Message-ID: <1623123201-45634-7-git-send-email-liuqi115@huawei.com>
Date:   Tue, 8 Jun 2021 11:33:18 +0800
From:   Qi Liu <liuqi115@...wei.com>
To:     <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>
CC:     <linuxarm@...wei.com>, Khuong Dinh <khuong@...amperecomputing.com>,
        "Will Deacon" <will@...nel.org>,
        Mark Rutland <mark.rutland@....com>
Subject: [PATCH v3 6/9] drivers/perf: Simplify EVENT ATTR macro in xgene_pmu.c

Use common macro PMU_EVENT_ATTR_ID to simplify XGENE_PMU_EVENT_ATTR.

Cc: Khuong Dinh <khuong@...amperecomputing.com>
Cc: Will Deacon <will@...nel.org>
Cc: Mark Rutland <mark.rutland@....com>
Signed-off-by: Qi Liu <liuqi115@...wei.com>
---
 drivers/perf/xgene_pmu.c | 11 ++++-------
 1 file changed, 4 insertions(+), 7 deletions(-)

diff --git a/drivers/perf/xgene_pmu.c b/drivers/perf/xgene_pmu.c
index ffe3bde..9b47bcd 100644
--- a/drivers/perf/xgene_pmu.c
+++ b/drivers/perf/xgene_pmu.c
@@ -278,17 +278,14 @@ static const struct attribute_group mc_pmu_v3_format_attr_group = {
 static ssize_t xgene_pmu_event_show(struct device *dev,
 				    struct device_attribute *attr, char *buf)
 {
-	struct dev_ext_attribute *eattr;
+	struct perf_pmu_events_attr *pmu_attr =
+		container_of(attr, struct perf_pmu_events_attr, attr);
 
-	eattr = container_of(attr, struct dev_ext_attribute, attr);
-	return sysfs_emit(buf, "config=0x%lx\n", (unsigned long) eattr->var);
+	return sysfs_emit(buf, "config=0x%llx\n", pmu_attr->id);
 }
 
 #define XGENE_PMU_EVENT_ATTR(_name, _config)		\
-	(&((struct dev_ext_attribute[]) {		\
-		{ .attr = __ATTR(_name, S_IRUGO, xgene_pmu_event_show, NULL), \
-		  .var = (void *) _config, }		\
-	 })[0].attr.attr)
+	PMU_EVENT_ATTR_ID(_name, xgene_pmu_event_show, _config)
 
 static struct attribute *l3c_pmu_events_attrs[] = {
 	XGENE_PMU_EVENT_ATTR(cycle-count,			0x00),
-- 
2.7.4