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sparc32: Implement smp_call_function_single().

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Reported by Stephen Rothwell.

Needed to fix the build when CONFIG_RELAY is enabled.

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller
2008-08-27 20:03:22 -07:00
parent 349101da8e
commit 66e4f8c076
3 changed files with 33 additions and 20 deletions
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16
arch/sparc/kernel/sun4d_smp.c
View File

@ -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);

12
arch/sparc/kernel/sun4m_smp.c
View File

@ -244,9 +244,9 @@ static struct smp_funcall {
static DEFINE_SPINLOCK(cross_call_lock);
/* Cross calls must be serialized, at least currently. */
static void smp4m_cross_call(smpfunc_t func, unsigned long arg1,
static void smp4m_cross_call(smpfunc_t func, cpumask_t mask, unsigned long arg1,
unsigned long arg2, unsigned long arg3,
unsigned long arg4, unsigned long arg5)
unsigned long arg4)
{
register int ncpus = SUN4M_NCPUS;
unsigned long flags;
@ -259,14 +259,14 @@ static void smp4m_cross_call(smpfunc_t func, unsigned long arg1,
ccall_info.arg2 = arg2;
ccall_info.arg3 = arg3;
ccall_info.arg4 = arg4;
ccall_info.arg5 = arg5;
ccall_info.arg5 = 0;
/* Init receive/complete mapping, plus fire the IPI's off. */
{
cpumask_t mask = cpu_online_map;
register int i;
cpu_clear(smp_processor_id(), mask);
cpus_and(mask, cpu_online_map, mask);
for(i = 0; i < ncpus; i++) {
if (cpu_isset(i, mask)) {
ccall_info.processors_in[i] = 0;
@ -284,12 +284,16 @@ static void smp4m_cross_call(smpfunc_t func, unsigned long arg1,
i = 0;
do {
if (!cpu_isset(i, mask))
continue;
while(!ccall_info.processors_in[i])
barrier();
} while(++i < ncpus);
i = 0;
do {
if (!cpu_isset(i, mask))
continue;
while(!ccall_info.processors_out[i])
barrier();
} while(++i < ncpus);