cpumask: use cpu_online in kernel/perf_event.c Also, we want to check against nr_cpu_ids, not num_possible_cpus(). The latter works, but the correct bounds check is < nr_cpu_ids. Signed-off-by: Rusty Russell To: Thomas Gleixner --- kernel/perf_event.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/kernel/perf_event.c b/kernel/perf_event.c --- a/kernel/perf_event.c +++ b/kernel/perf_event.c @@ -1596,7 +1596,7 @@ static struct perf_event_context *find_g if (perf_paranoid_cpu() && !capable(CAP_SYS_ADMIN)) return ERR_PTR(-EACCES); - if (cpu < 0 || cpu > num_possible_cpus()) + if (cpu < 0 || cpu >= nr_cpu_ids) return ERR_PTR(-EINVAL); /* @@ -1604,7 +1604,7 @@ static struct perf_event_context *find_g * offline CPU and activate it when the CPU comes up, but * that's for later. */ - if (!cpu_isset(cpu, cpu_online_map)) + if (!cpu_online(cpu)) return ERR_PTR(-ENODEV); cpuctx = &per_cpu(perf_cpu_context, cpu);