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| author | Ingo Molnar <mingo@kernel.org> | 2015-03-27 10:04:06 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2015-03-27 10:04:06 +0100 |
| commit | 4bfe186dbe0a058680e4bfb0d673194f0ceaffd4 (patch) | |
| tree | 5e374857dcd979d50f51c7091505784cb053d078 /init | |
| parent | 3c435c1e472ba344ee25f795f4807d4457e61f6c (diff) | |
| parent | 42528795ac1c8d7ba021797ec004904168956d64 (diff) | |
| download | linux-4bfe186dbe0a058680e4bfb0d673194f0ceaffd4.tar.bz2 | |
Merge branch 'for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu into core/rcu
Pull RCU updates from Paul E. McKenney:
- Documentation updates.
- Changes permitting use of call_rcu() and friends very early in
boot, for example, before rcu_init() is invoked.
- Miscellaneous fixes.
- Add in-kernel API to enable and disable expediting of normal RCU
grace periods.
- Improve RCU's handling of (hotplug-) outgoing CPUs.
Note: ARM support is lagging a bit here, and these improved
diagnostics might generate (harmless) splats.
- NO_HZ_FULL_SYSIDLE fixes.
- Tiny RCU updates to make it more tiny.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'init')
| -rw-r--r-- | init/Kconfig | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/init/Kconfig b/init/Kconfig index f5dbc6d4261b..9a0592516f48 100644 --- a/init/Kconfig +++ b/init/Kconfig @@ -791,6 +791,19 @@ config RCU_NOCB_CPU_ALL endchoice +config RCU_EXPEDITE_BOOT + bool + default n + help + This option enables expedited grace periods at boot time, + as if rcu_expedite_gp() had been invoked early in boot. + The corresponding rcu_unexpedite_gp() is invoked from + rcu_end_inkernel_boot(), which is intended to be invoked + at the end of the kernel-only boot sequence, just before + init is exec'ed. + + Accept the default if unsure. + endmenu # "RCU Subsystem" config BUILD_BIN2C |