46 lines
1.7 KiB
Diff
46 lines
1.7 KiB
Diff
From db12a7b834f2a871db351062740ecafffb78fac6 Mon Sep 17 00:00:00 2001
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From: Yicong Yang <yangyicong@huawei.com>
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Date: Wed, 7 Jun 2023 17:31:22 +0800
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Subject: [PATCH 15/19] hwtracing: hisi_ptt: Advertise PERF_PMU_CAP_NO_EXCLUDE
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for PTT PMU
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driver inclusion
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category: bugfix
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bugzilla: https://gitee.com/openeuler/kernel/issues/I7BZYX
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CVE: NA
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--------------------------------------------------------------------------
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From: Yicong Yang <yangyicong@hisilicon.com>
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The PTT trace collects PCIe TLP headers from the PCIe link and don't
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have the ability to exclude certain context. It doesn't support itrace
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as well. So only advertise PERF_PMU_CAP_NO_EXCLUDE. This will greatly
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save the storage of final data. Tested tracing idle link for ~15s,
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without this patch we'll collect ~28.682MB data for context related
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information and with this patch it reduced to ~0.226MB.
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Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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Signed-off-by: Yicong Yang <yangyicong@hisilicon.com>
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Signed-off-by: YunYi Yang <yangyunyi2@huawei.com>
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---
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drivers/hwtracing/ptt/hisi_ptt.c | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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diff --git a/drivers/hwtracing/ptt/hisi_ptt.c b/drivers/hwtracing/ptt/hisi_ptt.c
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index 31977a7c7e68..afd069245a1f 100644
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--- a/drivers/hwtracing/ptt/hisi_ptt.c
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+++ b/drivers/hwtracing/ptt/hisi_ptt.c
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@@ -1248,7 +1248,7 @@ static int hisi_ptt_register_pmu(struct hisi_ptt *hisi_ptt)
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hisi_ptt->hisi_ptt_pmu = (struct pmu) {
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.module = THIS_MODULE,
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- .capabilities = PERF_PMU_CAP_EXCLUSIVE | PERF_PMU_CAP_ITRACE,
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+ .capabilities = PERF_PMU_CAP_NO_EXCLUDE,
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.task_ctx_nr = perf_sw_context,
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.attr_groups = hisi_ptt_pmu_groups,
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.event_init = hisi_ptt_pmu_event_init,
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--
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2.27.0
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