diff options
Diffstat (limited to 'kernel/Kconfig.preempt')
-rw-r--r-- | kernel/Kconfig.preempt | 25 |
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 | ||
53 | endchoice | 53 | endchoice |
54 | 54 | ||
55 | config 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 | |||
69 | config 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. | ||