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| author | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2008-01-31 22:45:22 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-01-31 22:45:22 +0100 |
| commit | 095031052b4c03a7c8ffa51cbab031e442c4f8b7 (patch) | |
| tree | 97f4fd1592b98b1217826dc838fb70d6e8185890 /init/Kconfig | |
| parent | Merge branch 'for-2.6.25' of git://git.kernel.org/pub/scm/linux/kernel/git/pa... (diff) | |
| download | linux-095031052b4c03a7c8ffa51cbab031e442c4f8b7.tar.xz linux-095031052b4c03a7c8ffa51cbab031e442c4f8b7.zip | |
RCU: add help text for "RCU implementation type"
This patch supplies help text for the "RCU implementation type"
kernel configuration choice.
Reported-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'init/Kconfig')
| -rw-r--r-- | init/Kconfig | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/init/Kconfig b/init/Kconfig index 0d0bbf218f1f..dcc96a8c8c69 100644 --- a/init/Kconfig +++ b/init/Kconfig @@ -775,6 +775,14 @@ config PREEMPT_NOTIFIERS choice prompt "RCU implementation type:" default CLASSIC_RCU + help + This allows you to choose either the classic RCU implementation + that is designed for best read-side performance on non-realtime + systems, or the preemptible RCU implementation for best latency + on realtime systems. Note that some kernel preemption modes + will restrict your choice. + + Select the default if you are unsure. config CLASSIC_RCU bool "Classic RCU" |