From b8308511f6e090db769e35b958e2fb9714e5456f Mon Sep 17 00:00:00 2001 From: Ian Rogers Date: Thu, 16 Oct 2025 08:07:18 -0700 Subject: [PATCH] perf stat bperf cgroup: Increase MAX_EVENTS from 32 to 1024 The MAX_EVENTS value ensured a counted loop presumably to satisfy the BPF verifier. It is possible to go past 32 events when gathering uncore events. Increase the amount to 1024 as that should provide some amount of headroom. Signed-off-by: Ian Rogers Signed-off-by: Namhyung Kim --- tools/perf/util/bpf_skel/bperf_cgroup.bpf.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/perf/util/bpf_skel/bperf_cgroup.bpf.c b/tools/perf/util/bpf_skel/bperf_cgroup.bpf.c index 57cab7647a9ad..18ab4d9b49ffb 100644 --- a/tools/perf/util/bpf_skel/bperf_cgroup.bpf.c +++ b/tools/perf/util/bpf_skel/bperf_cgroup.bpf.c @@ -7,7 +7,7 @@ #include #define MAX_LEVELS 10 // max cgroup hierarchy level: arbitrary -#define MAX_EVENTS 32 // max events per cgroup: arbitrary +#define MAX_EVENTS 1024 // max events per cgroup: arbitrary // NOTE: many of map and global data will be modified before loading // from the userspace (perf tool) using the skeleton helpers. -- 2.47.3