diff options
| author | Ard Biesheuvel <ard.biesheuvel@linaro.org> | 2014-02-24 15:26:29 +0100 |
|---|---|---|
| committer | Mark Brown <broonie@linaro.org> | 2014-06-19 12:34:28 +0100 |
| commit | 92732accb6c99d8a0ae32897f04e0711962c40cc (patch) | |
| tree | f97b09f812b9477f38e671fd7de9a154b4b8acf5 /arch/arm64/include/asm/neon.h | |
| parent | 8ec3883b5accf54406952962e09fd5db0fae8ecc (diff) | |
arm64: add support for kernel mode NEON in interrupt contextv3.10/topic/arm64-fpsimd
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>
(cherry picked from commit 190f1ca85d071114930dd7abe6b5d103e9d5572f)
Signed-off-by: Mark Brown <broonie@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); |