libperf cpumap: Hide/reduce scope of MAX_NR_CPUS

Avoid redefinition of MAX_NR_CPUS as a global constant, the original
definition is tools/perf/perf.h.

Reviewed-by: Leo Yan <leo.yan@arm.com>
Signed-off-by: Ian Rogers <irogers@google.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: Kyle Meyer <kyle.meyer@hpe.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/20241206044035.1062032-4-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

Author: captain5050

tools/lib/perf/cpumap.c

@@ -12,6 +12,8 @@
 #include <limits.h>
 #include "internal.h"
 
+#define MAX_NR_CPUS 4096
+
 void perf_cpu_map__set_nr(struct perf_cpu_map *map, int nr_cpus)
 {
 	RC_CHK_ACCESS(map)->nr = nr_cpus;

tools/lib/perf/include/internal/cpumap.h

@@ -21,10 +21,6 @@ DECLARE_RC_STRUCT(perf_cpu_map) {
 	struct perf_cpu	map[];
 };
 
-#ifndef MAX_NR_CPUS
-#define MAX_NR_CPUS	4096
-#endif
-
 struct perf_cpu_map *perf_cpu_map__alloc(int nr_cpus);
 int perf_cpu_map__idx(const struct perf_cpu_map *cpus, struct perf_cpu cpu);
 bool perf_cpu_map__is_subset(const struct perf_cpu_map *a, const struct perf_cpu_map *b);