diff options
| author | Thomas Renninger <trenn@suse.de> | 2010-04-30 09:51:01 +0200 |
|---|---|---|
| committer | Dominik Brodowski <linux@dominikbrodowski.net> | 2010-05-03 15:22:43 +0200 |
| commit | 4d023a7913a52cd94b56876ec35cdc01d5dfcc31 (patch) | |
| tree | 8522fb1719e4e51c0182e6f53b65968bc173ad2a | |
| parent | 20ae04f824d968d439c0bf6403e50b9b0d79e505 (diff) | |
| download | cpufrequtils-4d023a7913a52cd94b56876ec35cdc01d5dfcc31.tar.gz | |
cpufrequtils aperf: MSR not readable differentiation
Tell the user whether he has to load the msr driver
or whether he has to be root to be able to read things.
Remove exclamation mark in output.
Signed-off-by: Thomas Renninger <trenn@suse.de>
Acked-by: Borislav Petkov <borislav.petkov@amd.com>
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
| -rw-r--r-- | utils/aperf.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/utils/aperf.c b/utils/aperf.c index c5ceb4b..627fb17 100644 --- a/utils/aperf.c +++ b/utils/aperf.c @@ -46,6 +46,7 @@ #include <unistd.h> #include <getopt.h> #include <sys/time.h> +#include <sys/types.h> #include <stdint.h> #include <errno.h> #include <fcntl.h> @@ -396,8 +397,13 @@ int main(int argc, char *argv[]) } } + if (getuid() != 0) { + fprintf(stderr, "You must be root\n"); + return EXIT_FAILURE; + } + if (!cpu_has_effective_freq()) { - fprintf(stderr, "CPU doesn't support APERF/MPERF!\n"); + fprintf(stderr, "CPU doesn't support APERF/MPERF\n"); return EXIT_FAILURE; } |