Messages in this thread Patch in this message | | | From | Kyle Meyer <> | Subject | [PATCH v3 4/6] perf/util/session: Replace MAX_NR_CPUS with nr_cpus_online | Date | Mon, 19 Aug 2019 15:23:33 -0500 |
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nr_cpus_online, the number of CPUs online during a record session, can be used as a dynamic alternative for MAX_NR_CPUS in perf_session__cpu_bitmap.
Cc: Peter Zijlstra <peterz@infradead.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Arnaldo Carvalho de Melo <acme@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: linux-kernel@vger.kernel.org Cc: Russ Anderson <russ.anderson@hpe.com> Signed-off-by: Kyle Meyer <kyle.meyer@hpe.com> --- tools/perf/util/session.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-)
Index: tip/tools/perf/util/session.c =================================================================== --- tip.orig/tools/perf/util/session.c +++ tip/tools/perf/util/session.c @@ -2284,6 +2284,7 @@ int perf_session__cpu_bitmap(struct perf { int i, err = -1; struct perf_cpu_map *map; + int nr_cpus_online = session->header.env.nr_cpus_online; for (i = 0; i < PERF_TYPE_MAX; ++i) { struct evsel *evsel; @@ -2308,9 +2309,8 @@ int perf_session__cpu_bitmap(struct perf for (i = 0; i < map->nr; i++) { int cpu = map->map[i]; - if (cpu >= MAX_NR_CPUS) { - pr_err("Requested CPU %d too large. " - "Consider raising MAX_NR_CPUS\n", cpu); + if (cpu >= nr_cpus_online) { + pr_err("Requested CPU %d too large\n", cpu); goto out_delete_map; }
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