diff options
| author | Calvin Owens <calvin@wbinvd.org> | 2025-06-13 19:20:28 -0700 |
|---|---|---|
| committer | Len Brown <len.brown@intel.com> | 2025-08-08 16:05:53 -0400 |
| commit | d34fe509f5f76d9dc36291242d67c6528027ebbd (patch) | |
| tree | 8f44c323aa12f3bff2806813ea629e980d1a525c | |
| parent | 6ea0ec1b958a84aff9f03fb0ae4613a4d5bed3ea (diff) | |
tools/power turbostat: Handle cap_get_proc() ENOSYS
Kernels configured with CONFIG_MULTIUSER=n have no cap_get_proc().
Check for ENOSYS to recognize this case, and continue on to
attempt to access the requested MSRs (such as temperature).
Signed-off-by: Calvin Owens <calvin@wbinvd.org>
Signed-off-by: Len Brown <len.brown@intel.com>
| -rw-r--r-- | tools/power/x86/turbostat/turbostat.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/tools/power/x86/turbostat/turbostat.c b/tools/power/x86/turbostat/turbostat.c index 778aee48c6e6..fa81e273d3a2 100644 --- a/tools/power/x86/turbostat/turbostat.c +++ b/tools/power/x86/turbostat/turbostat.c @@ -6574,8 +6574,16 @@ int check_for_cap_sys_rawio(void) int ret = 0; caps = cap_get_proc(); - if (caps == NULL) + if (caps == NULL) { + /* + * CONFIG_MULTIUSER=n kernels have no cap_get_proc() + * Allow them to continue and attempt to access MSRs + */ + if (errno == ENOSYS) + return 0; + return 1; + } if (cap_get_flag(caps, CAP_SYS_RAWIO, CAP_EFFECTIVE, &cap_flag_value)) { ret = 1; |