1 files changed, 6 insertions, 0 deletions

diff --git a/kernel/perf_counter.c b/kernel/perf_counter.c
index cb4062559b47..6cdf8248eda2 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;