[PATCH v3 11/48] perf cpumap: Add comments to aggr_cpu_id
STALE1727d
REVIEWED: 1 (0M)
From: Ian Rogers <irogers@google.com>
Date: 2021-12-30 07:21:22
Also in:
linux-arm-kernel, lkml
Subsystem:
performance events subsystem, the rest · Maintainers:
Peter Zijlstra, Ingo Molnar, Arnaldo Carvalho de Melo, Namhyung Kim, Linus Torvalds
Revision v3 of 4 in this series; 1 review trailer.
Revisions (4)
- v1 [diff vs current]
- v2 [diff vs current]
- v3 current
- v4 [diff vs current]
This code is already tested in topology.c. Reviewed-by: James Clark <redacted> Signed-off-by: Ian Rogers <irogers@google.com> --- tools/perf/util/cpumap.h | 9 +++++++++ 1 file changed, 9 insertions(+)
diff --git a/tools/perf/util/cpumap.h b/tools/perf/util/cpumap.h
index f0121dd4fdcb..edd93e1db36a 100644
--- a/tools/perf/util/cpumap.h
+++ b/tools/perf/util/cpumap.h@@ -7,11 +7,20 @@ #include <internal/cpumap.h> #include <perf/cpumap.h> +/** Identify where counts are aggregated, -1 implies not to aggregate. */ struct aggr_cpu_id { + /** A value in the range 0 to number of threads. */ int thread; + /** The numa node X as read from /sys/devices/system/node/nodeX. */ int node; + /** + * The socket number as read from + * /sys/devices/system/cpu/cpuX/topology/physical_package_id. + */ int socket; + /** The die id as read from /sys/devices/system/cpu/cpuX/topology/die_id. */ int die; + /** The core id as read from /sys/devices/system/cpu/cpuX/topology/core_id. */ int core; };
--
2.34.1.448.ga2b2bfdf31-goog