Commit 66e4f8c0 authored by David S. Miller's avatar David S. Miller

sparc32: Implement smp_call_function_single().

Reported by Stephen Rothwell.

Needed to fix the build when CONFIG_RELAY is enabled.
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 349101da
...@@ -50,27 +50,24 @@ struct seq_file; ...@@ -50,27 +50,24 @@ struct seq_file;
void smp_bogo(struct seq_file *); void smp_bogo(struct seq_file *);
void smp_info(struct seq_file *); void smp_info(struct seq_file *);
BTFIXUPDEF_CALL(void, smp_cross_call, smpfunc_t, unsigned long, unsigned long, unsigned long, unsigned long, unsigned long) 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(int, __hard_smp_processor_id, void)
BTFIXUPDEF_BLACKBOX(hard_smp_processor_id) BTFIXUPDEF_BLACKBOX(hard_smp_processor_id)
BTFIXUPDEF_BLACKBOX(load_current) BTFIXUPDEF_BLACKBOX(load_current)
#define smp_cross_call(func,arg1,arg2,arg3,arg4,arg5) BTFIXUP_CALL(smp_cross_call)(func,arg1,arg2,arg3,arg4,arg5) #define smp_cross_call(func,mask,arg1,arg2,arg3,arg4) BTFIXUP_CALL(smp_cross_call)(func,mask,arg1,arg2,arg3,arg4)
static inline void xc0(smpfunc_t func) { smp_cross_call(func, 0, 0, 0, 0, 0); } static inline void xc0(smpfunc_t func) { smp_cross_call(func, cpu_online_map, 0, 0, 0, 0); }
static inline void xc1(smpfunc_t func, unsigned long arg1) static inline void xc1(smpfunc_t func, unsigned long arg1)
{ smp_cross_call(func, arg1, 0, 0, 0, 0); } { smp_cross_call(func, cpu_online_map, arg1, 0, 0, 0); }
static inline void xc2(smpfunc_t func, unsigned long arg1, unsigned long arg2) static inline void xc2(smpfunc_t func, unsigned long arg1, unsigned long arg2)
{ smp_cross_call(func, arg1, arg2, 0, 0, 0); } { smp_cross_call(func, cpu_online_map, arg1, arg2, 0, 0); }
static inline void xc3(smpfunc_t func, unsigned long arg1, unsigned long arg2, static inline void xc3(smpfunc_t func, unsigned long arg1, unsigned long arg2,
unsigned long arg3) unsigned long arg3)
{ smp_cross_call(func, arg1, arg2, arg3, 0, 0); } { smp_cross_call(func, cpu_online_map, arg1, arg2, arg3, 0); }
static inline void xc4(smpfunc_t func, unsigned long arg1, unsigned long arg2, static inline void xc4(smpfunc_t func, unsigned long arg1, unsigned long arg2,
unsigned long arg3, unsigned long arg4) unsigned long arg3, unsigned long arg4)
{ smp_cross_call(func, arg1, arg2, arg3, arg4, 0); } { smp_cross_call(func, cpu_online_map, arg1, arg2, arg3, arg4); }
static inline void xc5(smpfunc_t func, unsigned long arg1, unsigned long arg2,
unsigned long arg3, unsigned long arg4, unsigned long arg5)
{ smp_cross_call(func, arg1, arg2, arg3, arg4, arg5); }
static inline int smp_call_function(void (*func)(void *info), void *info, int wait) static inline int smp_call_function(void (*func)(void *info), void *info, int wait)
{ {
...@@ -78,6 +75,14 @@ static inline int smp_call_function(void (*func)(void *info), void *info, int wa ...@@ -78,6 +75,14 @@ static inline int smp_call_function(void (*func)(void *info), void *info, int wa
return 0; 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;
}
static inline int cpu_logical_map(int cpu) static inline int cpu_logical_map(int cpu)
{ {
return cpu; return cpu;
......
...@@ -262,8 +262,9 @@ static struct smp_funcall { ...@@ -262,8 +262,9 @@ static struct smp_funcall {
static DEFINE_SPINLOCK(cross_call_lock); static DEFINE_SPINLOCK(cross_call_lock);
/* Cross calls must be serialized, at least currently. */ /* Cross calls must be serialized, at least currently. */
void smp4d_cross_call(smpfunc_t func, unsigned long arg1, unsigned long arg2, static void smp4d_cross_call(smpfunc_t func, cpumask_t mask, unsigned long arg1,
unsigned long arg3, unsigned long arg4, unsigned long arg5) unsigned long arg2, unsigned long arg3,
unsigned long arg4)
{ {
if(smp_processors_ready) { if(smp_processors_ready) {
register int high = smp_highest_cpu; register int high = smp_highest_cpu;
...@@ -278,7 +279,7 @@ void smp4d_cross_call(smpfunc_t func, unsigned long arg1, unsigned long arg2, ...@@ -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 a2 asm("i2") = arg2;
register unsigned long a3 asm("i3") = arg3; register unsigned long a3 asm("i3") = arg3;
register unsigned long a4 asm("i4") = arg4; register unsigned long a4 asm("i4") = arg4;
register unsigned long a5 asm("i5") = arg5; register unsigned long a5 asm("i5") = 0;
__asm__ __volatile__( __asm__ __volatile__(
"std %0, [%6]\n\t" "std %0, [%6]\n\t"
...@@ -290,11 +291,10 @@ void smp4d_cross_call(smpfunc_t func, unsigned long arg1, unsigned long arg2, ...@@ -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. */ /* Init receive/complete mapping, plus fire the IPI's off. */
{ {
cpumask_t mask;
register int i; register int i;
mask = cpumask_of_cpu(hard_smp4d_processor_id()); cpu_clear(smp_processor_id(), mask);
cpus_andnot(mask, cpu_online_map, mask); cpus_and(mask, cpu_online_map, mask);
for(i = 0; i <= high; i++) { for(i = 0; i <= high; i++) {
if (cpu_isset(i, mask)) { if (cpu_isset(i, mask)) {
ccall_info.processors_in[i] = 0; ccall_info.processors_in[i] = 0;
...@@ -309,12 +309,16 @@ void smp4d_cross_call(smpfunc_t func, unsigned long arg1, unsigned long arg2, ...@@ -309,12 +309,16 @@ void smp4d_cross_call(smpfunc_t func, unsigned long arg1, unsigned long arg2,
i = 0; i = 0;
do { do {
if (!cpu_isset(i, mask))
continue;
while(!ccall_info.processors_in[i]) while(!ccall_info.processors_in[i])
barrier(); barrier();
} while(++i <= high); } while(++i <= high);
i = 0; i = 0;
do { do {
if (!cpu_isset(i, mask))
continue;
while(!ccall_info.processors_out[i]) while(!ccall_info.processors_out[i])
barrier(); barrier();
} while(++i <= high); } while(++i <= high);
......
...@@ -244,9 +244,9 @@ static struct smp_funcall { ...@@ -244,9 +244,9 @@ static struct smp_funcall {
static DEFINE_SPINLOCK(cross_call_lock); static DEFINE_SPINLOCK(cross_call_lock);
/* Cross calls must be serialized, at least currently. */ /* 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 arg2, unsigned long arg3,
unsigned long arg4, unsigned long arg5) unsigned long arg4)
{ {
register int ncpus = SUN4M_NCPUS; register int ncpus = SUN4M_NCPUS;
unsigned long flags; unsigned long flags;
...@@ -259,14 +259,14 @@ static void smp4m_cross_call(smpfunc_t func, unsigned long arg1, ...@@ -259,14 +259,14 @@ static void smp4m_cross_call(smpfunc_t func, unsigned long arg1,
ccall_info.arg2 = arg2; ccall_info.arg2 = arg2;
ccall_info.arg3 = arg3; ccall_info.arg3 = arg3;
ccall_info.arg4 = arg4; ccall_info.arg4 = arg4;
ccall_info.arg5 = arg5; ccall_info.arg5 = 0;
/* Init receive/complete mapping, plus fire the IPI's off. */ /* Init receive/complete mapping, plus fire the IPI's off. */
{ {
cpumask_t mask = cpu_online_map;
register int i; register int i;
cpu_clear(smp_processor_id(), mask); cpu_clear(smp_processor_id(), mask);
cpus_and(mask, cpu_online_map, mask);
for(i = 0; i < ncpus; i++) { for(i = 0; i < ncpus; i++) {
if (cpu_isset(i, mask)) { if (cpu_isset(i, mask)) {
ccall_info.processors_in[i] = 0; ccall_info.processors_in[i] = 0;
...@@ -284,12 +284,16 @@ static void smp4m_cross_call(smpfunc_t func, unsigned long arg1, ...@@ -284,12 +284,16 @@ static void smp4m_cross_call(smpfunc_t func, unsigned long arg1,
i = 0; i = 0;
do { do {
if (!cpu_isset(i, mask))
continue;
while(!ccall_info.processors_in[i]) while(!ccall_info.processors_in[i])
barrier(); barrier();
} while(++i < ncpus); } while(++i < ncpus);
i = 0; i = 0;
do { do {
if (!cpu_isset(i, mask))
continue;
while(!ccall_info.processors_out[i]) while(!ccall_info.processors_out[i])
barrier(); barrier();
} while(++i < ncpus); } while(++i < ncpus);
......
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