NAME

       PR_TASK_PERF_EVENTS_DISABLE,  PR_TASK_PERF_EVENTS_ENABLE  -  disable or enable performance
       counters attached to the calling process

LIBRARY

       Standard C library (libc, -lc)

SYNOPSIS

       #include <linux/prctl.h>  /* Definition of PR_* constants */
       #include <sys/prctl.h>

       int prctl(PR_TASK_PERF_EVENTS_DISABLE);
       int prctl(PR_TASK_PERF_EVENTS_ENABLE);

DESCRIPTION

       PR_TASK_PERF_EVENTS_DISABLE
              Disable all performance counters attached to the  calling  process,  regardless  of
              whether  the counters were created by this process or another process.  Performance
              counters created by the calling process for other processes are unaffected.

       PR_TASK_PERF_EVENTS_ENABLE
              The converse of PR_TASK_PERF_EVENTS_DISABLE; enable performance  counters  attached
              to the calling process.

RETURN VALUE

       On  success,  0  is  returned.  On error, -1 is returned, and errno is set to indicate the
       error.

STANDARDS

       Linux.

HISTORY

       Linux 2.6.31.

       Originally called PR_TASK_PERF_COUNTERS_DISABLE and PR_TASK_PERF_COUNTERS_ENABLE;  renamed
       (retaining the same numerical value) in Linux 2.6.32.

SEE ALSO

       prctl(2)

       For more information on performance counters, see the Linux kernel source file tools/perf/
       design.txt.