arm64: perf: Correct the event index in sysfs
mainline inclusion from mainline-v5.8-rc3 commit 539707ca category: feature bugzilla: https://gitee.com/openeuler/kernel/issues/I4A1XO CVE: NA Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=539707caa1a89ee4efc57b4e4231c20c46575ccc ------------------------------------------------------------------------ When PMU event ID is equal or greater than 0x4000, it will be reduced by 0x4000 and it is not the raw number in the sysfs. Let's correct it and obtain the raw event ID. Before this patch: cat /sys/bus/event_source/devices/armv8_pmuv3_0/events/sample_feed event=0x001 After this patch: cat /sys/bus/event_source/devices/armv8_pmuv3_0/events/sample_feed event=0x4001 Signed-off-by: NShaokun Zhang <zhangshaokun@hisilicon.com> Cc: Will Deacon <will@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: <stable@vger.kernel.org> Link: https://lore.kernel.org/r/1592487344-30555-3-git-send-email-zhangshaokun@hisilicon.com [will: fixed formatting of 'if' condition] Signed-off-by: NWill Deacon <will@kernel.org> Signed-off-by: NQi Liu <liuqi115@huawei.com> Reviewed-by: NYang Jihong <yangjihong1@huawei.com> Signed-off-by: NYang Yingliang <yangyingliang@huawei.com>
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