Messages in this thread Patch in this message | | | From | Shuah Khan <> | Subject | [PATCH] kernel: events: Use scnprintf() in show_pmu_*() instead of snprintf() | Date | Tue, 1 Sep 2020 17:49:29 -0600 |
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Since snprintf() returns would-be-output size instead of the actual output size, replace it with scnprintf(), so the nr_addr_filters_show(), type_show(), and perf_event_mux_interval_ms_show() routines return the actual size.
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org> --- 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 7ed5248f0445..5f4236c84940 100644 --- a/kernel/events/core.c +++ b/kernel/events/core.c @@ -10571,7 +10571,7 @@ static ssize_t nr_addr_filters_show(struct device *dev, { struct pmu *pmu = dev_get_drvdata(dev); - return snprintf(page, PAGE_SIZE - 1, "%d\n", pmu->nr_addr_filters); + return scnprintf(page, PAGE_SIZE - 1, "%d\n", pmu->nr_addr_filters); } DEVICE_ATTR_RO(nr_addr_filters); @@ -10582,7 +10582,7 @@ type_show(struct device *dev, struct device_attribute *attr, char *page) { struct pmu *pmu = dev_get_drvdata(dev); - return snprintf(page, PAGE_SIZE-1, "%d\n", pmu->type); + return scnprintf(page, PAGE_SIZE-1, "%d\n", pmu->type); } static DEVICE_ATTR_RO(type); @@ -10593,7 +10593,7 @@ perf_event_mux_interval_ms_show(struct device *dev, { struct pmu *pmu = dev_get_drvdata(dev); - return snprintf(page, PAGE_SIZE-1, "%d\n", pmu->hrtimer_interval_ms); + return scnprintf(page, PAGE_SIZE-1, "%d\n", pmu->hrtimer_interval_ms); } static DEFINE_MUTEX(mux_interval_mutex); -- 2.25.1
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