Commit 7648f627 authored by Yicong Yang's avatar Yicong Yang Committed by Zhou Juan
Browse files

hwtracing: hisi_ptt: Advertise PERF_PMU_CAP_NO_EXCLUDE for PTT PMU

driver inclusion
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I7BZYX


CVE: NA

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

From: Yicong Yang <yangyicong@hisilicon.com>

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 only advertise 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 context related
information and with this patch it reduced to ~0.226MB.

Reviewed-by: default avatarJonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: default avatarYicong Yang <yangyicong@hisilicon.com>
parent 049a2cb0
Loading
Loading
Loading
Loading
0% Loading or .
You are about to add 0 people to the discussion. Proceed with caution.
Please to comment