diff options
| author | Tvrtko Ursulin <tvrtko.ursulin@intel.com> | 2022-02-01 15:16:38 +0000 |
|---|---|---|
| committer | Tvrtko Ursulin <tvrtko.ursulin@intel.com> | 2022-02-02 10:53:25 +0000 |
| commit | e835d0d9b1c5f4f93b33e807a40d4dba08edaefe (patch) | |
| tree | c7da6afd61617a1867b39c547a488f1e79c2aa36 /tools | |
| parent | 7c9c034619ef9dbfbfe041fbf3973a1cf1ac7a22 (diff) | |
intel_gpu_top: Improve error message when insufficient privilege
Print out end user friendly help text when the running user has
insufficient privilege for accessing system wide performance counters.
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Issue: https://gitlab.freedesktop.org/drm/intel/-/issues/5018
Reviewed-by: Ashutosh Dixit <ashutosh.dixit@intel.com>
Diffstat (limited to 'tools')
| -rw-r--r-- | tools/intel_gpu_top.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/tools/intel_gpu_top.c b/tools/intel_gpu_top.c index 81c724d1..0404a588 100644 --- a/tools/intel_gpu_top.c +++ b/tools/intel_gpu_top.c @@ -1761,6 +1761,15 @@ int main(int argc, char **argv) if (ret) { fprintf(stderr, "Failed to initialize PMU! (%s)\n", strerror(errno)); + if (errno == EACCES && geteuid()) + fprintf(stderr, +"\n" +"When running as a normal user CAP_PERFMON is required to access performance\n" +"monitoring. See \"man 7 capabilities\", \"man 8 setcap\", or contact your\n" +"distribution vendor for assistance.\n" +"\n" +"More information can be found at 'Perf events and tool security' document:\n" +"https://www.kernel.org/doc/html/latest/admin-guide/perf-security.html\n"); ret = EXIT_FAILURE; goto err; } |