diff options
| author |   Prarit Bhargava <prarit@redhat.com> | 2022-10-18 15:23:37 -0400 |
|---|---|---|
| committer |   Len Brown <len.brown@intel.com> | 2023-03-17 11:16:30 -0400 |
| commit | 9c08581728ccadc6b9e4135b7b8d31948e814f6f (patch) | |
| tree | 8f9a0ee59ddad698611e6cca6b8102d57a26a061 /tools/power/x86/turbostat/turbostat.c | |
| parent | tools/power turbostat: update dump of SECONDARY_TURBO_RATIO_LIMIT (diff) | |
| download | wireguard-linux-9c08581728ccadc6b9e4135b7b8d31948e814f6f.tar.xz wireguard-linux-9c08581728ccadc6b9e4135b7b8d31948e814f6f.zip | |
tools/power turbostat: Provide better debug messages for failed capabilities accesses
turbostat reports some capabilities access errors and not others. Provide
the same debug message for all errors.
[lenb: remove extra quotes]
Cc: David Arcari <darcari@redhat.com>
Signed-off-by: Prarit Bhargava <prarit@redhat.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to '')
| -rw-r--r-- | tools/power/x86/turbostat/turbostat.c | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/tools/power/x86/turbostat/turbostat.c b/tools/power/x86/turbostat/turbostat.c index 7ae3086c5ec0..d246ef6153dc 100644 --- a/tools/power/x86/turbostat/turbostat.c +++ b/tools/power/x86/turbostat/turbostat.c @@ -670,7 +670,8 @@ static int perf_instr_count_open(int cpu_num) /* counter for cpu_num, including user + kernel and all processes */ fd = perf_event_open(&pea, -1, cpu_num, -1, 0); if (fd == -1) { - warn("cpu%d: perf instruction counter", cpu_num); + warnx("capget(CAP_PERFMON) failed, try \"# setcap cap_sys_admin=ep %s\"", + progname); BIC_NOT_PRESENT(BIC_IPC); } @@ -3502,9 +3503,6 @@ release_msr: /* * set_my_sched_priority(pri) * return previous - * - * if non-root, do this: - * # /sbin/setcap cap_sys_rawio,cap_sys_nice=+ep /usr/bin/turbostat */ int set_my_sched_priority(int priority) { @@ -3518,7 +3516,8 @@ int set_my_sched_priority(int priority) retval = setpriority(PRIO_PROCESS, 0, priority); if (retval) - err(retval, "setpriority(%d)", priority); + errx(retval, "capget(CAP_SYS_NICE) failed,try \"# setcap cap_sys_nice=ep %s\"", + progname); errno = 0; retval = getpriority(PRIO_PROCESS, 0); @@ -5476,7 +5475,8 @@ void print_dev_latency(void) fd = open(path, O_RDONLY); if (fd < 0) { - warn("fopen %s\n", path); + warnx("capget(CAP_SYS_ADMIN) failed, try \"# setcap cap_sys_admin=ep %s\"", + progname); return; } |