| commit | b554d7de8d112fca4188da3bf0d7f8b56f42fb95 | |
| author | Eric Dumazet <eric.dumazet@gmail.com> | |
| Thu, 28 Apr 2011 05:23:45 +0000 (28 07:23 +0200) | ||
| committer | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | |
| Fri, 6 May 2011 06:16:59 +0000 (5 23:16 -0700) | ||
| tree | 3641a25b7356da1bdcb52f6ff160f605ed778cd4 | treesnapshot (tar.gz zip) |
| parent | 2655d57ef35aa327a2e58a1c5dc7b65c65003f4e | commitdiff |
rcu: optimize rcutiny
rcu_sched_qs() currently calls local_irq_save()/local_irq_restore() up
to three times.
Remove irq masking from rcu_qsctr_help() / invoke_rcu_kthread()
and do it once in rcu_sched_qs() / rcu_bh_qs()
This generates smaller code as well.
text data bss dec hex filename
2314 156 24 2494 9be kernel/rcutiny.old.o
2250 156 24 2430 97e kernel/rcutiny.new.o
Fix an outdated comment for rcu_qsctr_help()
Move invoke_rcu_kthread() definition before its use.
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
rcu_sched_qs() currently calls local_irq_save()/local_irq_restore() up
to three times.
Remove irq masking from rcu_qsctr_help() / invoke_rcu_kthread()
and do it once in rcu_sched_qs() / rcu_bh_qs()
This generates smaller code as well.
text data bss dec hex filename
2314 156 24 2494 9be kernel/rcutiny.old.o
2250 156 24 2430 97e kernel/rcutiny.new.o
Fix an outdated comment for rcu_qsctr_help()
Move invoke_rcu_kthread() definition before its use.
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
| kernel/rcutiny.c | diffblobblamehistory |