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perf: Increase MAX_NR_CPUS to 4096

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Systems have surpassed 2048 CPUs. Increase MAX_NR_CPUS to 4096.

Bitmaps declared with MAX_NR_CPUS bits will increase from 256B to 512B,
cpus_runtime will increase from 81960B to 163880B, and max_entries will
increase from 8192B to 16384B.

Reviewed-by: Ian Rogers <irogers@google.com>
Reviewed-by: Leo Yan <leo.yan@arm.com>
Signed-off-by: Kyle Meyer <kyle.meyer@hpe.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Ben Gainey <ben.gainey@arm.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: James Clark <james.clark@linaro.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/r/20241206044035.1062032-2-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Kyle Meyer 2024-12-05 20:40:28 -08:00 committed by Arnaldo Carvalho de Melo
parent 9e7a00ec6a
commit 9a1e106550
3 changed files with 5 additions and 3 deletions
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2
tools/lib/perf/include/internal/cpumap.h
View File

@ -22,7 +22,7 @@ DECLARE_RC_STRUCT(perf_cpu_map) {
};
#ifndef MAX_NR_CPUS
#define MAX_NR_CPUS 2048
#define MAX_NR_CPUS 4096
#endif
struct perf_cpu_map *perf_cpu_map__alloc(int nr_cpus);

2
tools/perf/perf.h
View File

@ -3,7 +3,7 @@
#define _PERF_PERF_H
#ifndef MAX_NR_CPUS
#define MAX_NR_CPUS 2048
#define MAX_NR_CPUS 4096
#endif
enum perf_affinity {

4
tools/perf/util/bpf_skel/kwork_top.bpf.c
View File

@ -18,7 +18,9 @@ enum kwork_class_type {
};
#define MAX_ENTRIES 102400
#define MAX_NR_CPUS 2048
#ifndef MAX_NR_CPUS
#define MAX_NR_CPUS 4096
#endif
#define PF_KTHREAD 0x00200000
#define MAX_COMMAND_LEN 16