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authorLen Brown <len.brown@intel.com>2009-01-09 03:39:43 -0500
committerLen Brown <len.brown@intel.com>2009-01-09 03:39:43 -0500
commitb2576e1d4408e134e2188c967b1f28af39cd79d4 (patch)
tree004f3c82faab760f304ce031d6d2f572e7746a50 /kernel/Kconfig.preempt
parent3cc8a5f4ba91f67bbdb81a43a99281a26aab8d77 (diff)
parent2150edc6c5cf00f7adb54538b9ea2a3e9cedca3f (diff)
Merge branch 'linus' into release
Diffstat (limited to 'kernel/Kconfig.preempt')
-rw-r--r--kernel/Kconfig.preempt25
1 files changed, 0 insertions, 25 deletions
diff --git a/kernel/Kconfig.preempt b/kernel/Kconfig.preempt
index 9fdba03dc1fc..bf987b95b356 100644
--- a/kernel/Kconfig.preempt
+++ b/kernel/Kconfig.preempt
@@ -52,28 +52,3 @@ config PREEMPT
52 52
53endchoice 53endchoice
54 54
55config PREEMPT_RCU
56 bool "Preemptible RCU"
57 depends on PREEMPT
58 default n
59 help
60 This option reduces the latency of the kernel by making certain
61 RCU sections preemptible. Normally RCU code is non-preemptible, if
62 this option is selected then read-only RCU sections become
63 preemptible. This helps latency, but may expose bugs due to
64 now-naive assumptions about each RCU read-side critical section
65 remaining on a given CPU through its execution.
66
67 Say N if you are unsure.
68
69config RCU_TRACE
70 bool "Enable tracing for RCU - currently stats in debugfs"
71 depends on PREEMPT_RCU
72 select DEBUG_FS
73 default y
74 help
75 This option provides tracing in RCU which presents stats
76 in debugfs for debugging RCU implementation.
77
78 Say Y here if you want to enable RCU tracing
79 Say N if you are unsure.