diff options
Diffstat (limited to 'Documentation/admin-guide/sysctl')
| -rw-r--r-- | Documentation/admin-guide/sysctl/kernel.rst | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/Documentation/admin-guide/sysctl/kernel.rst b/Documentation/admin-guide/sysctl/kernel.rst index 426162009ce9..d359bcfadd39 100644 --- a/Documentation/admin-guide/sysctl/kernel.rst +++ b/Documentation/admin-guide/sysctl/kernel.rst @@ -905,6 +905,17 @@ enabled, otherwise writing to this file will return ``-EBUSY``. The default value is 8. +perf_user_access (arm64 only) +================================= + +Controls user space access for reading perf event counters. When set to 1, +user space can read performance monitor counter registers directly. + +The default value is 0 (access disabled). + +See Documentation/arm64/perf.rst for more information. + + pid_max ======= @@ -1099,7 +1110,7 @@ task_delayacct =============== Enables/disables task delay accounting (see -:doc:`accounting/delay-accounting.rst`). Enabling this feature incurs +Documentation/accounting/delay-accounting.rst. Enabling this feature incurs a small amount of overhead in the scheduler but is useful for debugging and performance tuning. It is required by some tools such as iotop. |