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| author | Ard Biesheuvel <ard.biesheuvel@linaro.org> | 2014-02-24 15:26:29 +0100 |
|---|---|---|
| committer | Ard Biesheuvel <ard.biesheuvel@linaro.org> | 2014-05-08 11:31:57 +0200 |
| commit | 190f1ca85d071114930dd7abe6b5d103e9d5572f (patch) | |
| tree | 27344d61659e775df00892c8a13ae2473aad29b1 /arch/arm64/include/asm/neon.h | |
| parent | 005f78cd88494457ed38ce817f4e3fe5d372f0cb (diff) | |
| download | talos-obmc-linux-190f1ca85d071114930dd7abe6b5d103e9d5572f.tar.gz talos-obmc-linux-190f1ca85d071114930dd7abe6b5d103e9d5572f.zip | |
arm64: add support for kernel mode NEON in interrupt context
This patch modifies kernel_neon_begin() and kernel_neon_end(), so
they may be called from any context. To address the case where only
a couple of registers are needed, kernel_neon_begin_partial(u32) is
introduced which takes as a parameter the number of bottom 'n' NEON
q-registers required. To mark the end of such a partial section, the
regular kernel_neon_end() should be used.
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Diffstat (limited to 'arch/arm64/include/asm/neon.h')
| -rw-r--r-- | arch/arm64/include/asm/neon.h | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/arch/arm64/include/asm/neon.h b/arch/arm64/include/asm/neon.h index b0cc58a97780..13ce4cc18e26 100644 --- a/arch/arm64/include/asm/neon.h +++ b/arch/arm64/include/asm/neon.h @@ -8,7 +8,11 @@ * published by the Free Software Foundation. */ +#include <linux/types.h> + #define cpu_has_neon() (1) -void kernel_neon_begin(void); +#define kernel_neon_begin() kernel_neon_begin_partial(32) + +void kernel_neon_begin_partial(u32 num_regs); void kernel_neon_end(void); |
