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| author | Paul Mundt | 2007-09-28 09:04:49 +0200 |
|---|---|---|
| committer | Paul Mundt | 2007-09-28 09:04:49 +0200 |
| commit | 836624619b98535079053920a29a7e474ac17cbc (patch) | |
| tree | beb3b4fc1b893b6a422be3645c3611b1c7adb456 /arch/sh/kernel/process.c | |
| parent | sh: Follow gUSA preempt changes in __switch_to(). (diff) | |
| download | kernel-qcow2-linux-836624619b98535079053920a29a7e474ac17cbc.tar.gz kernel-qcow2-linux-836624619b98535079053920a29a7e474ac17cbc.tar.xz kernel-qcow2-linux-836624619b98535079053920a29a7e474ac17cbc.zip | |
sh: Conditionalize gUSA support.
This conditionalizes gUSA support. gUSA is not supported on
SMP configurations, and it's not necessary there anyways due
to having other atomicity options (ie, movli.l/movco.l).
Anything implementing the LL/SC semantics (all SH-4A CPUs)
can switch to userspace atomicity implementations without
requiring gUSA. This is left default-enabled on all UP so
that glibc doesn't break.
Those that know what they are doing can disable this explicitly.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'arch/sh/kernel/process.c')
| -rw-r--r-- | arch/sh/kernel/process.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/sh/kernel/process.c b/arch/sh/kernel/process.c index cd8dae16e940..b4469992d6b2 100644 --- a/arch/sh/kernel/process.c +++ b/arch/sh/kernel/process.c @@ -350,7 +350,7 @@ struct task_struct *__switch_to(struct task_struct *prev, unlazy_fpu(prev, task_pt_regs(prev)); #endif -#ifdef CONFIG_PREEMPT +#if defined(CONFIG_GUSA) && defined(CONFIG_PREEMPT) { struct pt_regs *regs; |