From 7bebfe9dd802b80abff5a43e00ab68d98893a22c Mon Sep 17 00:00:00 2001 From: Yang Jihong Date: Thu, 24 Mar 2022 11:19:57 +0800 Subject: perf/x86: Unify format of events sysfs show Sysfs show formats of files in /sys/devices/cpu/events/ are not unified, some end with "\n", and some do not. Modify sysfs show format of events defined by EVENT_ATTR_STR to end with "\n". Before: $ ls /sys/devices/cpu/events/* | xargs -i sh -c 'echo -n "{}: "; cat -A {}; echo' branch-instructions: event=0xc4$ branch-misses: event=0xc5$ bus-cycles: event=0x3c,umask=0x01$ cache-misses: event=0x2e,umask=0x41$ cache-references: event=0x2e,umask=0x4f$ cpu-cycles: event=0x3c$ instructions: event=0xc0$ ref-cycles: event=0x00,umask=0x03$ slots: event=0x00,umask=0x4 topdown-bad-spec: event=0x00,umask=0x81 topdown-be-bound: event=0x00,umask=0x83 topdown-fe-bound: event=0x00,umask=0x82 topdown-retiring: event=0x00,umask=0x80 After: $ ls /sys/devices/cpu/events/* | xargs -i sh -c 'echo -n "{}: "; cat -A {}; echo' /sys/devices/cpu/events/branch-instructions: event=0xc4$ /sys/devices/cpu/events/branch-misses: event=0xc5$ /sys/devices/cpu/events/bus-cycles: event=0x3c,umask=0x01$ /sys/devices/cpu/events/cache-misses: event=0x2e,umask=0x41$ /sys/devices/cpu/events/cache-references: event=0x2e,umask=0x4f$ /sys/devices/cpu/events/cpu-cycles: event=0x3c$ /sys/devices/cpu/events/instructions: event=0xc0$ /sys/devices/cpu/events/ref-cycles: event=0x00,umask=0x03$ /sys/devices/cpu/events/slots: event=0x00,umask=0x4$ Signed-off-by: Yang Jihong Signed-off-by: Peter Zijlstra (Intel) Link: https://lkml.kernel.org/r/20220324031957.135595-1-yangjihong1@huawei.com --- arch/x86/events/core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/x86/events/core.c b/arch/x86/events/core.c index 54f992e65252..b08052b05db6 100644 --- a/arch/x86/events/core.c +++ b/arch/x86/events/core.c @@ -1852,7 +1852,7 @@ ssize_t events_sysfs_show(struct device *dev, struct device_attribute *attr, cha /* string trumps id */ if (pmu_attr->event_str) - return sprintf(page, "%s", pmu_attr->event_str); + return sprintf(page, "%s\n", pmu_attr->event_str); return x86_pmu.events_sysfs_show(page, config); } -- cgit v1.2.3