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)
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