perf: Restrict perf event sampling CPU time to 5%

Signed-off-by: Tyler Nijmeh <tylernij@gmail.com>

Author: tytydraco

kernel/events/core.c

@@ -439,7 +439,7 @@ int sysctl_perf_event_mlock __read_mostly = 512 + (PAGE_SIZE / 1024); /* 'free'
  */
 #define DEFAULT_MAX_SAMPLE_RATE		100000
 #define DEFAULT_SAMPLE_PERIOD_NS	(NSEC_PER_SEC / DEFAULT_MAX_SAMPLE_RATE)
-#define DEFAULT_CPU_TIME_MAX_PERCENT	25
+#define DEFAULT_CPU_TIME_MAX_PERCENT	5
 
 int sysctl_perf_event_sample_rate __read_mostly	= DEFAULT_MAX_SAMPLE_RATE;