summaryrefslogtreecommitdiffstats
path: root/arch/sparc/include/asm/smp_32.h
diff options
context:
space:
mode:
authorDaniel Hellstrom <daniel@gaisler.com>2011-05-02 02:08:51 +0200
committerDavid S. Miller <davem@davemloft.net>2011-05-16 22:07:43 +0200
commitd6d048192b1d22cb8f09da0cc936095ec2cb969c (patch)
tree1fcb2aac7a706074a59c329a2e25cac5cc171255 /arch/sparc/include/asm/smp_32.h
parentsparc32,leon: SMP power down implementation (diff)
downloadlinux-d6d048192b1d22cb8f09da0cc936095ec2cb969c.tar.xz
linux-d6d048192b1d22cb8f09da0cc936095ec2cb969c.zip
sparc32: implement SMP IPIs using the generic functions
The current sparc32 SMP IPI generation is implemented the cross call function. The cross call function uses IRQ15 the NMI, this is has the effect that IPIs will interrupt IRQ critical areas and hang the system. Typically on/after spin_lock_irqsave calls can be aborted. The cross call functionality must still exist to flush cache/TLBS. This patch provides CPU models a custom way to implement generation of IPIs on the generic code's request. The typical approach is to generate an IRQ for each IPI case. After this patch each sparc32 SMP CPU model needs to implement IPIs in order to function properly. Signed-off-by: Daniel Hellstrom <daniel@gaisler.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/sparc/include/asm/smp_32.h')
-rw-r--r--arch/sparc/include/asm/smp_32.h22
1 files changed, 9 insertions, 13 deletions
diff --git a/arch/sparc/include/asm/smp_32.h b/arch/sparc/include/asm/smp_32.h
index d7837dcb2525..7a8e6cbd640c 100644
--- a/arch/sparc/include/asm/smp_32.h
+++ b/arch/sparc/include/asm/smp_32.h
@@ -50,12 +50,19 @@ void smp_callin(void);
void smp_boot_cpus(void);
void smp_store_cpu_info(int);
+void smp_resched_interrupt(void);
+void smp_call_function_single_interrupt(void);
+void smp_call_function_interrupt(void);
+
struct seq_file;
void smp_bogo(struct seq_file *);
void smp_info(struct seq_file *);
BTFIXUPDEF_CALL(void, smp_cross_call, smpfunc_t, cpumask_t, unsigned long, unsigned long, unsigned long, unsigned long)
BTFIXUPDEF_CALL(int, __hard_smp_processor_id, void)
+BTFIXUPDEF_CALL(void, smp_ipi_resched, int);
+BTFIXUPDEF_CALL(void, smp_ipi_single, int);
+BTFIXUPDEF_CALL(void, smp_ipi_mask_one, int);
BTFIXUPDEF_BLACKBOX(hard_smp_processor_id)
BTFIXUPDEF_BLACKBOX(load_current)
@@ -73,19 +80,8 @@ static inline void xc4(smpfunc_t func, unsigned long arg1, unsigned long arg2,
unsigned long arg3, unsigned long arg4)
{ smp_cross_call(func, cpu_online_map, arg1, arg2, arg3, arg4); }
-static inline int smp_call_function(void (*func)(void *info), void *info, int wait)
-{
- xc1((smpfunc_t)func, (unsigned long)info);
- return 0;
-}
-
-static inline int smp_call_function_single(int cpuid, void (*func) (void *info),
- void *info, int wait)
-{
- smp_cross_call((smpfunc_t)func, cpumask_of_cpu(cpuid),
- (unsigned long) info, 0, 0, 0);
- return 0;
-}
+extern void arch_send_call_function_single_ipi(int cpu);
+extern void arch_send_call_function_ipi_mask(const struct cpumask *mask);
static inline int cpu_logical_map(int cpu)
{