PR_SET_TSC(2const)                                          PR_SET_TSC(2const)

NAME
       PR_SET_TSC - change whether the timestamp counter can be read by the
       process

LIBRARY
       Standard C library (libc, -lc)

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

       int prctl(PR_SET_TSC, long flag);

DESCRIPTION
       Set the state of the flag determining whether the timestamp counter can
       be read by the process.  Pass PR_TSC_ENABLE to flag to allow it to be
       read, or PR_TSC_SIGSEGV to generate a SIGSEGV when the process tries to
       read the timestamp counter.

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

ERRORS
       EINVAL arg2 is not a valid value.

STANDARDS
       Linux.  x86 only.

HISTORY
       Linux 2.6.26 (x86).

SEE ALSO
       prctl(2), PR_GET_TSC(2const)

Linux man-pages 6.9.1             2024-06-02                PR_SET_TSC(2const)