Messages in this thread | | | From | Nikita Shubin <> | Subject | [RFC PATCH 0/1] perf tools: Add 'm' event modifier for counting | Date | Tue, 11 Jan 2022 17:20:47 +0300 |
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From: Nikita Shubin <n.shubin@yadro.com>
This patch is a proposal to add Machine Mode modifier that is currently available only for RISC-V for perf tool.
We don't currently have a level that is lower than kernel, so i don't see we can reuse something existing for this purpose.
The exclude_machine bit seems harmless to as no one will proccess it apart of riscv.
Patch depends on Atish Patra PMU series: https://lwn.net/Articles/879905/ + some modifications to pass execlude event to SBI PMU extension
Tested with qemu.
Nikita Shubin (1): perf tools: Add 'm' event modifier for counting machine
include/uapi/linux/perf_event.h | 3 ++- tools/include/uapi/linux/perf_event.h | 3 ++- tools/perf/Documentation/perf-list.txt | 1 + tools/perf/tests/parse-events.c | 18 ++++++++++++++++++ tools/perf/util/evsel.c | 4 +++- tools/perf/util/parse-events.c | 18 +++++++++++++----- tools/perf/util/parse-events.l | 2 +- 7 files changed, 40 insertions(+), 9 deletions(-)
-- 2.31.1
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