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| author | David S. Miller <davem@davemloft.net> | 2008-08-27 20:03:22 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2008-08-27 20:03:22 -0700 |
| commit | 66e4f8c076f8803e83879d986a7803a918b2129e (patch) | |
| tree | 8d32c210b0c2304a55c9333e71a76d43755a4ab3 /arch/sparc/kernel/sun4d_smp.c | |
| parent | 349101da8e1f8e5eb1476b02823da80495224485 (diff) | |
| download | talos-obmc-linux-66e4f8c076f8803e83879d986a7803a918b2129e.tar.gz talos-obmc-linux-66e4f8c076f8803e83879d986a7803a918b2129e.zip | |
sparc32: Implement smp_call_function_single().
Reported by Stephen Rothwell.
Needed to fix the build when CONFIG_RELAY is enabled.
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/sparc/kernel/sun4d_smp.c')
| -rw-r--r-- | arch/sparc/kernel/sun4d_smp.c | 16 |
1 files changed, 10 insertions, 6 deletions
diff --git a/arch/sparc/kernel/sun4d_smp.c b/arch/sparc/kernel/sun4d_smp.c index dfde77ff0848..69596402a500 100644 --- a/arch/sparc/kernel/sun4d_smp.c +++ b/arch/sparc/kernel/sun4d_smp.c @@ -262,8 +262,9 @@ static struct smp_funcall { static DEFINE_SPINLOCK(cross_call_lock); /* Cross calls must be serialized, at least currently. */ -void smp4d_cross_call(smpfunc_t func, unsigned long arg1, unsigned long arg2, - unsigned long arg3, unsigned long arg4, unsigned long arg5) +static void smp4d_cross_call(smpfunc_t func, cpumask_t mask, unsigned long arg1, + unsigned long arg2, unsigned long arg3, + unsigned long arg4) { if(smp_processors_ready) { register int high = smp_highest_cpu; @@ -278,7 +279,7 @@ void smp4d_cross_call(smpfunc_t func, unsigned long arg1, unsigned long arg2, register unsigned long a2 asm("i2") = arg2; register unsigned long a3 asm("i3") = arg3; register unsigned long a4 asm("i4") = arg4; - register unsigned long a5 asm("i5") = arg5; + register unsigned long a5 asm("i5") = 0; __asm__ __volatile__( "std %0, [%6]\n\t" @@ -290,11 +291,10 @@ void smp4d_cross_call(smpfunc_t func, unsigned long arg1, unsigned long arg2, /* Init receive/complete mapping, plus fire the IPI's off. */ { - cpumask_t mask; register int i; - mask = cpumask_of_cpu(hard_smp4d_processor_id()); - cpus_andnot(mask, cpu_online_map, mask); + cpu_clear(smp_processor_id(), mask); + cpus_and(mask, cpu_online_map, mask); for(i = 0; i <= high; i++) { if (cpu_isset(i, mask)) { ccall_info.processors_in[i] = 0; @@ -309,12 +309,16 @@ void smp4d_cross_call(smpfunc_t func, unsigned long arg1, unsigned long arg2, i = 0; do { + if (!cpu_isset(i, mask)) + continue; while(!ccall_info.processors_in[i]) barrier(); } while(++i <= high); i = 0; do { + if (!cpu_isset(i, mask)) + continue; while(!ccall_info.processors_out[i]) barrier(); } while(++i <= high); |
