diff options
author | Peter Zijlstra <a.p.zijlstra@chello.nl> | 2011-04-05 11:23:39 -0400 |
---|---|---|
committer | Ingo Molnar <mingo@elte.hu> | 2011-04-14 02:52:32 -0400 |
commit | 184748cc50b2dceb8287f9fb657eda48ff8fcfe7 (patch) | |
tree | da32494cf29e5ec9f80b17dc8590bdc450ea545a /arch/m32r/kernel/smp.c | |
parent | a4c98f8bbeafee12c979c90743f6fda94f7515c7 (diff) |
sched: Provide scheduler_ipi() callback in response to smp_send_reschedule()
For future rework of try_to_wake_up() we'd like to push part of that
function onto the CPU the task is actually going to run on.
In order to do so we need a generic callback from the existing scheduler IPI.
This patch introduces such a generic callback: scheduler_ipi() and
implements it as a NOP.
BenH notes: PowerPC might use this IPI on offline CPUs under rare conditions!
Acked-by: Russell King <rmk+kernel@arm.linux.org.uk>
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Acked-by: Chris Metcalf <cmetcalf@tilera.com>
Acked-by: Jesper Nilsson <jesper.nilsson@axis.com>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Reviewed-by: Frank Rowand <frank.rowand@am.sony.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Nick Piggin <npiggin@kernel.dk>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/20110405152728.744338123@chello.nl
Diffstat (limited to 'arch/m32r/kernel/smp.c')
-rw-r--r-- | arch/m32r/kernel/smp.c | 4 |
1 files changed, 1 insertions, 3 deletions
diff --git a/arch/m32r/kernel/smp.c b/arch/m32r/kernel/smp.c index 31cef20b2996..fc10b39893d4 100644 --- a/arch/m32r/kernel/smp.c +++ b/arch/m32r/kernel/smp.c | |||
@@ -122,8 +122,6 @@ void smp_send_reschedule(int cpu_id) | |||
122 | * | 122 | * |
123 | * Description: This routine executes on CPU which received | 123 | * Description: This routine executes on CPU which received |
124 | * 'RESCHEDULE_IPI'. | 124 | * 'RESCHEDULE_IPI'. |
125 | * Rescheduling is processed at the exit of interrupt | ||
126 | * operation. | ||
127 | * | 125 | * |
128 | * Born on Date: 2002.02.05 | 126 | * Born on Date: 2002.02.05 |
129 | * | 127 | * |
@@ -138,7 +136,7 @@ void smp_send_reschedule(int cpu_id) | |||
138 | *==========================================================================*/ | 136 | *==========================================================================*/ |
139 | void smp_reschedule_interrupt(void) | 137 | void smp_reschedule_interrupt(void) |
140 | { | 138 | { |
141 | /* nothing to do */ | 139 | scheduler_ipi(); |
142 | } | 140 | } |
143 | 141 | ||
144 | /*==========================================================================* | 142 | /*==========================================================================* |