PERF_MAX_CONTEXTS_PER_STACK 1022 include/uapi/linux/perf_event.h #define PERF_MAX_CONTEXTS_PER_STACK	  8
PERF_MAX_CONTEXTS_PER_STACK 1022 tools/include/uapi/linux/perf_event.h #define PERF_MAX_CONTEXTS_PER_STACK	  8