Commit b6fe9383 authored by Len Brown's avatar Len Brown
Browse files

tools/power turbostat: Fix warning upon failed /dev/cpu_dma_latency read 



Previously a failed read of /dev/cpu_dma_latency erroneously complained
turbostat: capget(CAP_SYS_ADMIN) failed, try "# setcap cap_sys_admin=ep ./turbostat

This went unnoticed because this file is typically visible to root,
and turbostat was typically run as root.

Going forward, when a non-root user can run turbostat...
Complain about failed read access to this file only if --debug is used.

Signed-off-by: default avatarLen Brown <len.brown@intel.com>
parent 538d505f

tools/power/x86/turbostat/turbostat.c

+2 −1
Original line number Diff line number Diff line
@@ -5545,7 +5545,8 @@ void print_dev_latency(void) 


	fd = open(path, O_RDONLY);

	if (fd < 0) {

		warnx("capget(CAP_SYS_ADMIN) failed, try \"# setcap cap_sys_admin=ep %s\"", progname);

		if (debug)

			warnx("Read %s failed", path);

		return;

	}