From: XieLudan <xie.ludan@zte.com.cn>
Date: Sat, 15 Mar 2025 06:17:38 +0000 (+0800)
Subject: perf/core: Use sysfs_emit() instead of scnprintf()
X-Git-Tag: v6.15-rc1~217^2~11
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=b6ecb57f1fec114cfa19b1bf06f25f904ca928f9;p=thirdparty%2Fkernel%2Flinux.git

perf/core: Use sysfs_emit() instead of scnprintf()

Follow the advice in Documentation/filesystems/sysfs.rst:

  "- show() should only use sysfs_emit() or sysfs_emit_at() when formatting
     the value to be returned to user space."

No change in functionality intended.

[ mingo: Updated the changelog ]

Signed-off-by: XieLudan <xie.ludan@zte.com.cn>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/r/20250315141738452lXIH39UJAXlCmcATCzcBv@zte.com.cn
---

diff --git a/kernel/events/core.c b/kernel/events/core.c
index e7d0b055f96c7..2533fc32d890e 100644
--- a/kernel/events/core.c
+++ b/kernel/events/core.c
@@ -11713,7 +11713,7 @@ static ssize_t nr_addr_filters_show(struct device *dev,
 {
 	struct pmu *pmu = dev_get_drvdata(dev);
 
-	return scnprintf(page, PAGE_SIZE - 1, "%d\n", pmu->nr_addr_filters);
+	return sysfs_emit(page, "%d\n", pmu->nr_addr_filters);
 }
 DEVICE_ATTR_RO(nr_addr_filters);
 
@@ -11724,7 +11724,7 @@ type_show(struct device *dev, struct device_attribute *attr, char *page)
 {
 	struct pmu *pmu = dev_get_drvdata(dev);
 
-	return scnprintf(page, PAGE_SIZE - 1, "%d\n", pmu->type);
+	return sysfs_emit(page, "%d\n", pmu->type);
 }
 static DEVICE_ATTR_RO(type);
 
@@ -11735,7 +11735,7 @@ perf_event_mux_interval_ms_show(struct device *dev,
 {
 	struct pmu *pmu = dev_get_drvdata(dev);
 
-	return scnprintf(page, PAGE_SIZE - 1, "%d\n", pmu->hrtimer_interval_ms);
+	return sysfs_emit(page, "%d\n", pmu->hrtimer_interval_ms);
 }
 
 static DEFINE_MUTEX(mux_interval_mutex);