Commit 99790d0b authored Oct 12, 2023 by Jiantao Xiao

Revert "perf: hns3: default use hardware event 0 as group leader event."

driver inclusion
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I87YZU


CVE: NA

----------------------------------------------------------------------

This reverts commit eebd097b.

We want 0x00105 event and 0x10105 event share a hardware event,
but for kernel 6.2 'commit 5f8f9567 ("perf evlist: Remove
group option.")' remove -g parameter.

So add the patch (eebd097b) to set default related event
idx as 0 to share the first hardware event.

But openeuler kernel code do not remove -g parameter. So revert
it.

Signed-off-by: Jiantao Xiao <xiaojiantao1@h-partners.com>

parent 2e4f319f

drivers/perf/hisilicon/hns3_pmu.c

+1 −3

Original line number	Diff line number	Diff line
		@@ -804,11 +804,9 @@ static int hns3_pmu_find_related_event_idx(struct hns3_pmu *hns3_pmu,
		if (!hns3_pmu_cmp_event(sibling, event))
		continue;

		/* Related events is used in group, else we use index 0 event as related event */
		/* Related events is used in group */
		if (sibling->group_leader == event->group_leader)
		return idx;
		else
		return 0;
		}

		/* No related event and all hardware events are used up */