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

..

chan_kern.c

um: switch close_chan() to struct line

2012-03-25 00:29:54 +01:00

chan_user.c

um: take register_winch_irq() into the caller of is_skas_winch()

2011-11-02 14:15:11 +01:00

chan_user.h

um: chan_init_pri is dead now

2012-03-25 00:29:54 +01:00

chan.h

um: switch close_chan() to struct line

2012-03-25 00:29:54 +01:00

cow_sys.h

um: -include user.h for USER_OBJ, trim includes

2011-11-02 14:14:44 +01:00

cow_user.c

um: switch cow_user.h to htobe{32,64}/betoh{32,64}

2012-04-10 00:13:45 +02:00

cow.h

um: switch cow_user.h to htobe{32,64}/betoh{32,64}

2012-04-10 00:13:45 +02:00

daemon_kern.c

…

daemon_user.c

um: -include user.h for USER_OBJ, trim includes

2011-11-02 14:14:44 +01:00

daemon.h

…

fd.c

um: -include user.h for USER_OBJ, trim includes

2011-11-02 14:14:44 +01:00

harddog_kern.c

…

harddog_user.c

um: -include user.h for USER_OBJ, trim includes

2011-11-02 14:14:44 +01:00

hostaudio_kern.c

…

line.c

um: deadlock in line_write_interrupt()

2012-03-25 00:29:56 +01:00

line.h

um: line->have_irq is never checked...

2012-03-25 00:29:54 +01:00

Makefile

…

mconsole_kern.c

rcu: Move PREEMPT_RCU preemption to switch_to() invocation

2012-05-02 14:43:23 -07:00

mconsole_kern.h

um: take mconsole*.h to arch/um/drivers

2011-11-02 14:15:12 +01:00

mconsole_user.c

um: -include user.h for USER_OBJ, trim includes

2011-11-02 14:14:44 +01:00

mconsole.h

um: take mconsole*.h to arch/um/drivers

2011-11-02 14:15:12 +01:00

mmapper_kern.c

…

net_kern.c

Merge branch 'for-linus-3.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/uml

2012-03-27 18:29:53 -07:00

net_user.c

um: -include user.h for USER_OBJ, trim includes

2011-11-02 14:14:44 +01:00

null.c

…

pcap_kern.c

…

pcap_user.c

um: -include user.h for USER_OBJ, trim includes

2011-11-02 14:14:44 +01:00

pcap_user.h

…

port_kern.c

um: irq: Remove IRQF_DISABLED

2012-03-25 00:29:52 +01:00

port_user.c

um: -include user.h for USER_OBJ, trim includes

2011-11-02 14:14:44 +01:00

port.h

…

pty.c

um: -include user.h for USER_OBJ, trim includes

2011-11-02 14:14:44 +01:00

random.c

um: irq: Remove IRQF_DISABLED

2012-03-25 00:29:52 +01:00

slip_common.c

…

slip_common.h

…

slip_kern.c

…

slip_user.c

um: -include user.h for USER_OBJ, trim includes

2011-11-02 14:14:44 +01:00

slip.h

…

slirp_kern.c

…

slirp_user.c

um: -include user.h for USER_OBJ, trim includes

2011-11-02 14:14:44 +01:00

slirp.h

…

ssl.c

um: switch users of ->chan_list to ->chan_{in,out} (easy cases)

2012-03-25 00:29:54 +01:00

ssl.h

…

stderr_console.c

…

stdio_console.c

um: switch users of ->chan_list to ->chan_{in,out} (easy cases)

2012-03-25 00:29:54 +01:00

stdio_console.h

…

tty.c

um: -include user.h for USER_OBJ, trim includes

2011-11-02 14:14:44 +01:00

ubd_kern.c

um: clean up the includes in ubd

2012-03-25 00:29:52 +01:00

ubd_user.c

um: clean up the includes in ubd

2012-03-25 00:29:52 +01:00

ubd.h

um: clean up the includes in ubd

2012-03-25 00:29:52 +01:00

umcast_kern.c

…

umcast_user.c

um: -include user.h for USER_OBJ, trim includes

2011-11-02 14:14:44 +01:00

umcast.h

…

vde_kern.c

…

vde_user.c

um: -include user.h for USER_OBJ, trim includes

2011-11-02 14:14:44 +01:00

vde.h

…

xterm_kern.c

um: irq: Remove IRQF_DISABLED

2012-03-25 00:29:52 +01:00

xterm.c

um: -include user.h for USER_OBJ, trim includes

2011-11-02 14:14:44 +01:00

xterm.h

…