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hwtracing: hisi_ptt: Advertise PERF_PMU_CAP_NO_EXCLUDE for PTT PMU

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The PTT trace collects PCIe TLP headers from the PCIe link and don't
have the ability to exclude certain context. It doesn't support itrace
as well. So replace PERF_PMU_CAP_ITRACE with PERF_PMU_CAP_NO_EXCLUDE.
This will greatly save the storage of final data. Tested tracing idle
link for ~15s, without this patch we'll collect ~28.682MB data for
additional information and with this patch it reduced to ~0.226MB.

Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Yicong Yang <yangyicong@hisilicon.com>
Tested-by: Junhao He <hejunhao3@huawei.com>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Link: https://lore.kernel.org/r/20230621092804.15120-5-yangyicong@huawei.com
This commit is contained in:
Yicong Yang 2023-06-21 17:28:03 +08:00 committed by Suzuki K Poulose
parent 6373c463ac
commit 45c90292ad
1 changed files with 1 additions and 1 deletions
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drivers/hwtracing/ptt/hisi_ptt.c
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@ -1212,7 +1212,7 @@ static int hisi_ptt_register_pmu(struct hisi_ptt *hisi_ptt)
hisi_ptt->hisi_ptt_pmu = (struct pmu) {
.module = THIS_MODULE,
.capabilities = PERF_PMU_CAP_EXCLUSIVE | PERF_PMU_CAP_ITRACE,
.capabilities = PERF_PMU_CAP_EXCLUSIVE | PERF_PMU_CAP_NO_EXCLUDE,
.task_ctx_nr = perf_sw_context,
.attr_groups = hisi_ptt_pmu_groups,
.event_init = hisi_ptt_pmu_event_init,