diff options
Diffstat (limited to 'kernel/perf_counter.c')
| -rw-r--r-- | kernel/perf_counter.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/kernel/perf_counter.c b/kernel/perf_counter.c index cb4062559b4..6cdf8248eda 100644 --- a/kernel/perf_counter.c +++ b/kernel/perf_counter.c @@ -1704,6 +1704,12 @@ static int perf_mmap(struct file *file, struct vm_area_struct *vma) user_extra = nr_pages + 1; user_lock_limit = sysctl_perf_counter_mlock >> (PAGE_SHIFT - 10); + + /* + * Increase the limit linearly with more CPUs: + */ + user_lock_limit *= num_online_cpus(); + user_locked = atomic_long_read(&user->locked_vm) + user_extra; extra = 0; |