X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=lib%2FKconfig.debug;h=4f4008fc73e42d2c6aa66349ba82c78c243fb2c1;hb=2e6c4e5101633a54aeee1f2e83020ee77fcb70d2;hp=0d385be682db021dccc6482f385d8bb6f30fa75e;hpb=d870ec7281d8429ab17d2e0324f4d8ca3f3de62d;p=linux-2.6

diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index 0d385be682..4f4008fc73 100644
--- a/lib/Kconfig.debug
+++ b/lib/Kconfig.debug
@@ -205,6 +205,19 @@ config SLUB_DEBUG_ON
 	  off in a kernel built with CONFIG_SLUB_DEBUG_ON by specifying
 	  "slub_debug=-".
 
+config SLUB_STATS
+	default n
+	bool "Enable SLUB performance statistics"
+	depends on SLUB
+	help
+	  SLUB statistics are useful to debug SLUBs allocation behavior in
+	  order find ways to optimize the allocator. This should never be
+	  enabled for production use since keeping statistics slows down
+	  the allocator by a few percentage points. The slabinfo command
+	  supports the determination of the most active slabs to figure
+	  out which slabs are relevant to a particular load.
+	  Try running: slabinfo -DA
+
 config DEBUG_PREEMPT
 	bool "Debug preemptible kernel"
 	depends on DEBUG_KERNEL && PREEMPT && (TRACE_IRQFLAGS_SUPPORT || PPC64)