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author | Frederic Weisbecker <fweisbec@gmail.com> | 2012-07-11 18:26:32 (GMT) |
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committer | Frederic Weisbecker <fweisbec@gmail.com> | 2012-09-26 13:47:01 (GMT) |
commit | 1e1a689f10a27a4fe1ab9b4c6db04fa7232746a5 (patch) | |
tree | 098f180287723813d248f59f452ca3a7db04b636 /arch/um | |
parent | c5d900bf676b1e2a61c44483932c8088651bbb4e (diff) | |
download | linux-1e1a689f10a27a4fe1ab9b4c6db04fa7232746a5.tar.xz |
rcu: Ignore userspace extended quiescent state by default
By default we don't want to enter into RCU extended quiescent
state while in userspace because doing this produces some overhead
(eg: use of syscall slowpath). Set it off by default and ready to
run when some feature like adaptive tickless need it.
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Alessio Igor Bogani <abogani@kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Avi Kivity <avi@redhat.com>
Cc: Chris Metcalf <cmetcalf@tilera.com>
Cc: Christoph Lameter <cl@linux.com>
Cc: Geoff Levand <geoff@infradead.org>
Cc: Gilad Ben Yossef <gilad@benyossef.com>
Cc: Hakan Akkan <hakanakkan@gmail.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Josh Triplett <josh@joshtriplett.org>
Cc: Kevin Hilman <khilman@ti.com>
Cc: Max Krasnyansky <maxk@qualcomm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephen Hemminger <shemminger@vyatta.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Sven-Thorsten Dietrich <thebigcorporation@gmail.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
Diffstat (limited to 'arch/um')
0 files changed, 0 insertions, 0 deletions