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| author | Catalin Marinas <catalin.marinas@arm.com> | 2007-01-24 20:47:08 +0300 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2007-01-25 19:35:29 +0300 |
| commit | c6428464894889e110418928e6b37dc2eb4cee56 (patch) | |
| tree | 292410b297ef2332715aabd7a87ef9fe0c03de4a /arch/arm/vfp/vfp.h | |
| parent | 412489af76b5c0e4029d4406d93554c22a88fc73 (diff) | |
| download | linux-c6428464894889e110418928e6b37dc2eb4cee56.tar.xz | |
[ARM] 4111/1: Allow VFP to work with thread migration on SMP
The current lazy saving of the VFP registers is no longer possible
with thread migration on SMP. This patch implements a per-CPU
vfp-state pointer and the saving of the VFP registers at every context
switch. The registers restoring is still performed in a lazy way.
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/vfp/vfp.h')
| -rw-r--r-- | arch/arm/vfp/vfp.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/arm/vfp/vfp.h b/arch/arm/vfp/vfp.h index f2797896e6d5..54a2ad6d9ca2 100644 --- a/arch/arm/vfp/vfp.h +++ b/arch/arm/vfp/vfp.h @@ -370,3 +370,7 @@ struct op { u32 (* const fn)(int dd, int dn, int dm, u32 fpscr); u32 flags; }; + +#ifdef CONFIG_SMP +extern void vfp_save_state(void *location, u32 fpexc); +#endif |