PR_SET_TSC2const
Change whether the timestamp counter can be read by the process
Usage
#include <linux/prctl.h> /* Definition of PR_* constants */ #include <sys/prctl.h>
int prctl(PR_SET_TSC, long flag);
Library
Standard C library (libc, -lc)
Overview
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
-
flag is not a valid value.
Releases
2 releases since Debian 13 (Trixie); the text changed 1 time.