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| author |   Graf Yang <graf.yang@analog.com> | 2009-01-07 23:14:39 +0800 |
|---|---|---|
| committer |   Bryan Wu <cooloney@kernel.org> | 2009-01-07 23:14:39 +0800 |
| commit | 6b3087c64a92a36ae20d33479b4df6d7afc910d4 (patch) | |
| tree | 95984fc623658ebf150d0d912a7f6c5a0301a5a9 /arch/blackfin/include/asm/processor.h | |
| parent | Blackfin arch: SMP supporting patchset: BF561 related code (diff) | |
| download | linux-dev-6b3087c64a92a36ae20d33479b4df6d7afc910d4.tar.xz linux-dev-6b3087c64a92a36ae20d33479b4df6d7afc910d4.zip | |
Blackfin arch: SMP supporting patchset: Blackfin header files and machine common code
Blackfin dual core BF561 processor can support SMP like features.
https://docs.blackfin.uclinux.org/doku.php?id=linux-kernel:smp-like
In this patch, we provide SMP extend to Blackfin header files
and machine common code
Signed-off-by: Graf Yang <graf.yang@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
Diffstat (limited to 'arch/blackfin/include/asm/processor.h')
| -rw-r--r-- | arch/blackfin/include/asm/processor.h | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/arch/blackfin/include/asm/processor.h b/arch/blackfin/include/asm/processor.h index e3e9b41fa8db..30703c75030c 100644 --- a/arch/blackfin/include/asm/processor.h +++ b/arch/blackfin/include/asm/processor.h @@ -106,7 +106,8 @@ unsigned long get_wchan(struct task_struct *p); eip; }) #define KSTK_ESP(tsk) ((tsk) == current ? rdusp() : (tsk)->thread.usp) -#define cpu_relax() barrier() +#define cpu_relax() smp_mb() + /* Get the Silicon Revision of the chip */ static inline uint32_t __pure bfin_revid(void) @@ -137,7 +138,11 @@ static inline uint32_t __pure bfin_revid(void) static inline uint16_t __pure bfin_cpuid(void) { return (bfin_read_CHIPID() & CHIPID_FAMILY) >> 12; +} +static inline uint32_t __pure bfin_dspid(void) +{ + return bfin_read_DSPID(); } static inline uint32_t __pure bfin_compiled_revid(void) |