linux/arch/um
Paul E. McKenney 616c310e83 rcu: Move PREEMPT_RCU preemption to switch_to() invocation
Currently, PREEMPT_RCU readers are enqueued upon entry to the scheduler.
This is inefficient because enqueuing is required only if there is a
context switch, and entry to the scheduler does not guarantee a context
switch.

The commit therefore moves the enqueuing to immediately precede the
call to switch_to() from the scheduler.

Signed-off-by: Paul E. McKenney <paul.mckenney@linaro.org>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Tested-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-05-02 14:43:23 -07:00
..
drivers rcu: Move PREEMPT_RCU preemption to switch_to() invocation 2012-05-02 14:43:23 -07:00
include um: Use asm-generic/switch_to.h 2012-04-10 00:13:45 +02:00
kernel um: uml_setup_stubs': warning: unused variable 'pages' 2012-04-10 00:13:45 +02:00
os-Linux um: use the right ifdef around exports in user_syms.c 2012-03-25 00:29:55 +01:00
scripts um: don't bother trying to rebuild CHECKFLAGS for USER_OBJS 2012-03-25 00:29:56 +01:00
sys-ia64 uml: remove useless comments 2009-04-01 08:59:17 -07:00
sys-ppc um: change to new flag variables 2011-03-17 14:02:57 +01:00
.gitignore um: tell git to ignore generated files 2010-03-06 11:26:28 -08:00
defconfig um: Update defconfig 2012-03-25 00:46:51 +01:00
Kconfig.char um: clean Kconfig up a bit 2011-11-02 14:15:29 +01:00
Kconfig.common um: Wire CONFIG_GENERIC_IO up 2012-03-25 00:29:56 +01:00
Kconfig.debug lib: consolidate DEBUG_STACK_USAGE option 2011-05-25 08:39:54 -07:00
Kconfig.net Fix common misspellings 2011-03-31 11:26:23 -03:00
Kconfig.rest um: switch to use of drivers/Kconfig 2011-11-02 14:15:41 +01:00
Kconfig.um um: clean Kconfig up a bit 2011-11-02 14:15:29 +01:00
Makefile um: Switch to large mcmodel on x86_64 2012-03-25 00:29:57 +01:00
Makefile-ia64
Makefile-os-Linux x86, um: get rid of arch/um/os symlink 2008-10-22 22:55:22 -07:00
Makefile-ppc
Makefile-skas