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| author | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2013-03-27 08:44:00 -0700 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2013-06-10 13:45:49 -0700 |
| commit | 127781d1ba1ee5bbe1780afa35dd0e71583b143d (patch) | |
| tree | 3c9b5961bc02e7f380a7bd7932181329ecbec397 /include/linux/rcupdate.h | |
| parent | efc151c33b971148894789dc7c5589dec46d4348 (diff) | |
| download | linux-stable-127781d1ba1ee5bbe1780afa35dd0e71583b143d.tar.gz linux-stable-127781d1ba1ee5bbe1780afa35dd0e71583b143d.tar.bz2 linux-stable-127781d1ba1ee5bbe1780afa35dd0e71583b143d.zip | |
rcu: Remove TINY_PREEMPT_RCU
TINY_PREEMPT_RCU adds significant code and complexity, but does not
offer commensurate benefits. People currently using TINY_PREEMPT_RCU
can get much better memory footprint with TINY_RCU, or, if they really
need preemptible RCU, they can use TREE_PREEMPT_RCU with a relatively
minor degradation in memory footprint. Please note that this move
has been widely publicized on LKML (https://lkml.org/lkml/2012/11/12/545)
and on LWN (http://lwn.net/Articles/541037/).
This commit therefore removes TINY_PREEMPT_RCU.
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
[ paulmck: Updated to eliminate #else in rcutiny.h as suggested by Josh ]
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
Diffstat (limited to 'include/linux/rcupdate.h')
| -rw-r--r-- | include/linux/rcupdate.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/linux/rcupdate.h b/include/linux/rcupdate.h index ddcc7826d907..70b1522badd3 100644 --- a/include/linux/rcupdate.h +++ b/include/linux/rcupdate.h @@ -277,7 +277,7 @@ void wait_rcu_gp(call_rcu_func_t crf); #if defined(CONFIG_TREE_RCU) || defined(CONFIG_TREE_PREEMPT_RCU) #include <linux/rcutree.h> -#elif defined(CONFIG_TINY_RCU) || defined(CONFIG_TINY_PREEMPT_RCU) +#elif defined(CONFIG_TINY_RCU) #include <linux/rcutiny.h> #else #error "Unknown RCU implementation specified to kernel configuration" |