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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-07-01 17:13:56 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-07-01 17:13:56 +0000 |
commit | 511e4ecd3211371086a9698ce4042700957cee33 (patch) | |
tree | 7e4c8dbd3f81844f362f480dd8c9244afd9e31dc /drivers/perf/hisilicon/hisi_pcie_pmu.c | |
parent | Adding debian version 6.9.2-1~exp1. (diff) | |
download | linux-511e4ecd3211371086a9698ce4042700957cee33.tar.xz linux-511e4ecd3211371086a9698ce4042700957cee33.zip |
Merging upstream version 6.9.7.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/perf/hisilicon/hisi_pcie_pmu.c')
-rw-r--r-- | drivers/perf/hisilicon/hisi_pcie_pmu.c | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/drivers/perf/hisilicon/hisi_pcie_pmu.c b/drivers/perf/hisilicon/hisi_pcie_pmu.c index 5d1f0e9fdb..dba3991256 100644 --- a/drivers/perf/hisilicon/hisi_pcie_pmu.c +++ b/drivers/perf/hisilicon/hisi_pcie_pmu.c @@ -350,15 +350,27 @@ static bool hisi_pcie_pmu_validate_event_group(struct perf_event *event) return false; for (num = 0; num < counters; num++) { + /* + * If we find a related event, then it's a valid group + * since we don't need to allocate a new counter for it. + */ if (hisi_pcie_pmu_cmp_event(event_group[num], sibling)) break; } + /* + * Otherwise it's a new event but if there's no available counter, + * fail the check since we cannot schedule all the events in + * the group simultaneously. + */ + if (num == HISI_PCIE_MAX_COUNTERS) + return false; + if (num == counters) event_group[counters++] = sibling; } - return counters <= HISI_PCIE_MAX_COUNTERS; + return true; } static int hisi_pcie_pmu_event_init(struct perf_event *event) |