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| author | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2015-04-21 09:22:14 -0700 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2015-05-27 12:59:06 -0700 |
| commit | 26730f55c2842b4ee06a5307d58265db7dd26065 (patch) | |
| tree | 98ea25356350f8ce1b694b704ddf9b3700daf16f /init | |
| parent | 47d631af58bb9b2f2dd3d0da8c98a79a5e75c738 (diff) | |
| download | linux-rpi3-26730f55c2842b4ee06a5307d58265db7dd26065.tar.gz linux-rpi3-26730f55c2842b4ee06a5307d58265db7dd26065.tar.bz2 linux-rpi3-26730f55c2842b4ee06a5307d58265db7dd26065.zip | |
rcu: Make RCU able to tolerate undefined CONFIG_RCU_KTHREAD_PRIO
This commit updates the initialization of the kthread_prio boot parameter
so that RCU will build even when CONFIG_RCU_KTHREAD_PRIO is undefined.
The kthread_prio boot parameter is set to CONFIG_RCU_KTHREAD_PRIO if
that is defined, otherwise to 1 if CONFIG_RCU_BOOST is defined and
to zero otherwise. This commit then makes CONFIG_RCU_KTHREAD_PRIO
depend on CONFIG_RCU_EXPERT, so that Kconfig users won't be asked about
CONFIG_RCU_KTHREAD_PRIO unless they want to be.
Reported-by: Linus Torvalds <torvalds@linux-foundation.org>
Reported-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Reviewed-by: Pranith Kumar <bobby.prani@gmail.com>
Diffstat (limited to 'init')
| -rw-r--r-- | init/Kconfig | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/init/Kconfig b/init/Kconfig index 78176001f73b..af2c93c4a105 100644 --- a/init/Kconfig +++ b/init/Kconfig @@ -671,6 +671,7 @@ config RCU_KTHREAD_PRIO range 0 99 if !RCU_BOOST default 1 if RCU_BOOST default 0 if !RCU_BOOST + depends on RCU_EXPERT help This option specifies the SCHED_FIFO priority value that will be assigned to the rcuc/n and rcub/n threads and is also the value |