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authorGraf Yang <graf.yang@analog.com>2009-01-07 23:14:39 +0800
committerBryan Wu <cooloney@kernel.org>2009-01-07 23:14:39 +0800
commit6b3087c64a92a36ae20d33479b4df6d7afc910d4 (patch)
tree95984fc623658ebf150d0d912a7f6c5a0301a5a9 /arch/blackfin/include/asm/processor.h
parentc51b4488cd5bff08ed5690a8f303ff7f0894da2a (diff)
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.h7
1 files changed, 6 insertions, 1 deletions
diff --git a/arch/blackfin/include/asm/processor.h b/arch/blackfin/include/asm/processor.h
index e3e9b41fa8d..30703c75030 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)