diff options
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/Kconfig.debug | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug index 25c3ed594c5..65f964e7fe7 100644 --- a/lib/Kconfig.debug +++ b/lib/Kconfig.debug @@ -520,6 +520,12 @@ config LOCK_STAT For more details, see Documentation/lockstat.txt + You can analyze lock events with "perf lock", subcommand of perf. + If you want to use "perf lock", you need to turn on CONFIG_EVENT_TRACING. + + CONFIG_LOCK_STAT defines "contended" and "acquired" lock events. + (CONFIG_LOCKDEP defines "acquire" and "release" events.) + config DEBUG_LOCKDEP bool "Lock dependency engine debugging" depends on DEBUG_KERNEL && LOCKDEP |