[PATCH linux-next] perf/core: use sysfs_emit() instead of scnprintf().

From: xie.ludan
Date: Sat Mar 15 2025 - 02:17:54 EST


From: XieLudan <xie.ludan@xxxxxxxxxx>


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.


Signed-off-by: XieLudan <xie.ludan@xxxxxxxxxx>

---

 kernel/events/core.c | 6 +++---

 1 file changed, 3 insertions(+), 3 deletions(-)


diff --git a/kernel/events/core.c b/kernel/events/core.c

index 96f957035c6e..209250f4851a 100644

--- a/kernel/events/core.c

+++ b/kernel/events/core.c

@@ -11698,7 +11698,7 @@ 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);

 

@@ -11709,7 +11709,7 @@ 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);

 

@@ -11720,7 +11720,7 @@ 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);

-- 

2.25.1