diff options
Diffstat (limited to 'lib/libpmc/pmc.3')
| -rw-r--r-- | lib/libpmc/pmc.3 | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/lib/libpmc/pmc.3 b/lib/libpmc/pmc.3 index a031928..9dd25f0 100644 --- a/lib/libpmc/pmc.3 +++ b/lib/libpmc/pmc.3 @@ -261,7 +261,14 @@ CPU is running unprivileged code. .It Li PMC_CAP_WRITE The ability to write to performance counters. .El -.Ss Functional Grouping +.Ss CPU Naming Conventions +CPUs are named using small integers from zero uptil, but +excluding, the value returned by function +.Fn pmc_ncpu . +On platforms supporting sparsely numbered CPUs not all the numbers in +this range will denote valid CPUs. +Operations on non-existent CPUs will return an error. +.Ss Functional Grouping of the API This section contains a brief overview of the available functionality in the PMC library. Each function listed here is described further in its own manual page. @@ -342,7 +349,7 @@ system. Retrieve statistics maintained by .Xr hwpmc 4 . .It Fn pmc_ncpu -Determine the number of CPUs in the system. +Determine the greatest possible CPU number on the system. .It Fn pmc_npmc Return the number of hardware PMCs present in a given CPU. .It Fn pmc_pmcinfo |
