alistair23-linux/init
Paul E. McKenney 46fdb0937f rcu: Make synchronize_srcu_expedited() fast if running readers
The synchronize_srcu_expedited() function is currently quick if there
are no active readers, but will delay a full jiffy if there are any.
If these readers leave their SRCU read-side critical sections quickly,
this is way too long to wait.  So this commit first waits ten microseconds,
and only then falls back to jiffy-at-a-time waiting.

Reported-by: Avi Kivity <avi@redhat.com>
Reported-by: Marcelo Tosatti <mtosatti@redhat.com>
Tested-by: Takuya Yoshikawa <yoshikawa.takuya@oss.ntt.co.jp>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
2010-11-29 22:02:40 -08:00
..
calibrate.c timers, init: Limit the number of per cpu calibration bootup messages 2009-11-26 10:18:42 +01:00
do_mounts.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
do_mounts.h md: move lots of #include lines out of .h files and into .c 2009-03-31 14:33:13 +11:00
do_mounts_initrd.c Make do_execve() take a const filename pointer 2010-08-17 18:07:43 -07:00
do_mounts_md.c md: move lots of #include lines out of .h files and into .c 2009-03-31 14:33:13 +11:00
do_mounts_rd.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
initramfs.c initramfs: handle unrecognised decompressor when unpacking 2010-04-24 11:31:26 -07:00
Kconfig rcu: Make synchronize_srcu_expedited() fast if running readers 2010-11-29 22:02:40 -08:00
main.c Make do_execve() take a const filename pointer 2010-08-17 18:07:43 -07:00
Makefile kbuild: move compile.h to include/generated 2009-12-12 13:08:14 +01:00
noinitramfs.c
version.c kbuild: move utsrelease.h to include/generated 2009-12-12 13:08:15 +01:00