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

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

arch/sparc/include/asm/smp_32.h

+15 −10
Original line number Diff line number Diff line
@@ -50,27 +50,24 @@ struct seq_file; 
void smp_bogo(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_BLACKBOX(hard_smp_processor_id)

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)

{ 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)

{ 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,

			   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,

			   unsigned long arg3, unsigned long arg4)

{ smp_cross_call(func, arg1, arg2, arg3, arg4, 0); }

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); }

{ 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)

{
@@ -78,6 +75,14 @@ static inline int smp_call_function(void (*func)(void *info), void *info, int wa 
	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)

{

	return cpu;

arch/sparc/kernel/sun4d_smp.c

+10 −6
Original line number Diff line number Diff line
@@ -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);

arch/sparc/kernel/sun4m_smp.c

+8 −4
Original line number Diff line number Diff line
@@ -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);