sched: scheduler debugging, enable in Kconfig

enable CONFIG_SCHED_DEBUG in lib/Kconfig.debug.

the runtime overhead of this option is very small.

Signed-off-by: Ingo Molnar <mingo@elte.hu>

diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index da95e10cfd7094e8996ab08bb38c1f1bd5d4d6f9..fab32a2863710a328b5f41dc7498515fb7d55b5e 100644 (file)
--- a/lib/Kconfig.debug
+++ b/lib/Kconfig.debug
@@ -105,6 +105,15 @@ config DETECT_SOFTLOCKUP
           can be detected via the NMI-watchdog, on platforms that
           support it.)
 
+config SCHED_DEBUG
+       bool "Collect scheduler debugging info"
+       depends on DEBUG_KERNEL && PROC_FS
+       default y
+       help
+         If you say Y here, the /proc/sched_debug file will be provided
+         that can help debug the scheduler. The runtime overhead of this
+         option is minimal.
+
 config SCHEDSTATS
        bool "Collect scheduler statistics"
        depends on DEBUG_KERNEL && PROC_FS