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

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.

EINVALarg2 is not a valid value.

Linux 2.6.26 (x86).

Standard C library (libc, -lc)

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

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

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

Linux. x86 only.

#include<linux/prctl.h> /* Definition of PR_* constants */ #include<sys/prctl.h>intprctl(PR_SET_TSC,longflag);