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| author | Peter Zijlstra <a.p.zijlstra@chello.nl> | 2012-09-12 11:22:00 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2012-09-13 16:52:04 +0200 |
| commit | f3e947867478af9a12b9956bcd000ac7613a8a95 (patch) | |
| tree | 63fabb89439447e0f72c465e8b8d0852e9deff08 /Documentation/scheduler/sched-arch.txt | |
| parent | 5ed4f1d96deee82ee92cd1ac1e0108c27e80e9b0 (diff) | |
| download | lwn-f3e947867478af9a12b9956bcd000ac7613a8a95.tar.gz lwn-f3e947867478af9a12b9956bcd000ac7613a8a95.zip | |
sched: Remove __ARCH_WANT_INTERRUPTS_ON_CTXSW
Now that the last architecture to use this has stopped doing so (ARM,
thanks Catalin!) we can remove this complexity from the scheduler
core.
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Link: http://lkml.kernel.org/n/tip-g9p2a1w81xxbrze25v9zpzbf@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'Documentation/scheduler/sched-arch.txt')
| -rw-r--r-- | Documentation/scheduler/sched-arch.txt | 10 |
1 files changed, 0 insertions, 10 deletions
diff --git a/Documentation/scheduler/sched-arch.txt b/Documentation/scheduler/sched-arch.txt index 28aa1075e291..b1b8587b86f0 100644 --- a/Documentation/scheduler/sched-arch.txt +++ b/Documentation/scheduler/sched-arch.txt @@ -17,16 +17,6 @@ you must `#define __ARCH_WANT_UNLOCKED_CTXSW` in a header file Unlocked context switches introduce only a very minor performance penalty to the core scheduler implementation in the CONFIG_SMP case. -2. Interrupt status -By default, the switch_to arch function is called with interrupts -disabled. Interrupts may be enabled over the call if it is likely to -introduce a significant interrupt latency by adding the line -`#define __ARCH_WANT_INTERRUPTS_ON_CTXSW` in the same place as for -unlocked context switches. This define also implies -`__ARCH_WANT_UNLOCKED_CTXSW`. See arch/arm/include/asm/system.h for an -example. - - CPU idle ======== Your cpu_idle routines need to obey the following rules: |