[PATCH] perf: Increase MAX_NR_CPUS to 4096

[Kyle Meyer]

Systems have surpassed 2048 CPUs. Increase MAX_NR_CPUS to 4096.

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

Signed-off-by: Kyle Meyer <kyle.meyer@xxxxxxx>
---

Tested on a 32 socket Sapphire Rapids system with 3840 CPUs.

 tools/lib/perf/include/internal/cpumap.h | 2 +-
 tools/perf/perf.h                        | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/tools/lib/perf/include/internal/cpumap.h b/tools/lib/perf/include/internal/cpumap.h
index 49649eb51ce4..3cf28522004e 100644
--- a/tools/lib/perf/include/internal/cpumap.h
+++ b/tools/lib/perf/include/internal/cpumap.h
@@ -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);
diff --git a/tools/perf/perf.h b/tools/perf/perf.h
index c004dd4e65a3..3cb40965549f 100644
--- a/tools/perf/perf.h
+++ b/tools/perf/perf.h
@@ -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 {
-- 
2.47.1