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sparc32: Kill smp_message_pass() and related code.

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Completely unused, and it just makes the SMP message
passing code on 32-bit sparc look more complex than
it is.

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller
2008-04-29 01:14:10 -07:00
parent ceb4e8e44b
commit 0a9e9b110c
3 changed files with 0 additions and 79 deletions
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arch/sparc/kernel/sun4m_smp.c
-45
View File
@@ -34,8 +34,6 @@
#include "irq.h"
#define IRQ_RESCHEDULE 13
#define IRQ_STOP_CPU 14
#define IRQ_CROSS_CALL 15
extern ctxd_t *srmmu_ctx_table_phys;
@@ -232,48 +230,6 @@ void smp4m_irq_rotate(int cpu)
set_irq_udt(next);
}
/* Cross calls, in order to work efficiently and atomically do all
* the message passing work themselves, only stopcpu and reschedule
* messages come through here.
*/
void smp4m_message_pass(int target, int msg, unsigned long data, int wait)
{
static unsigned long smp_cpu_in_msg[NR_CPUS];
cpumask_t mask;
int me = smp_processor_id();
int irq, i;
if(msg == MSG_RESCHEDULE) {
irq = IRQ_RESCHEDULE;
if(smp_cpu_in_msg[me])
return;
} else if(msg == MSG_STOP_CPU) {
irq = IRQ_STOP_CPU;
} else {
goto barf;
}
smp_cpu_in_msg[me]++;
if(target == MSG_ALL_BUT_SELF || target == MSG_ALL) {
mask = cpu_online_map;
if(target == MSG_ALL_BUT_SELF)
cpu_clear(me, mask);
for(i = 0; i < 4; i++) {
if (cpu_isset(i, mask))
set_cpu_int(i, irq);
}
} else {
set_cpu_int(target, irq);
}
smp_cpu_in_msg[me]--;
return;
barf:
printk("Yeeee, trying to send SMP msg(%d) on cpu %d\n", msg, me);
panic("Bogon SMP message pass.");
}
static struct smp_funcall {
smpfunc_t func;
unsigned long arg1;
@@ -413,6 +369,5 @@ void __init sun4m_init_smp(void)
BTFIXUPSET_BLACKBOX(hard_smp_processor_id, smp4m_blackbox_id);
BTFIXUPSET_BLACKBOX(load_current, smp4m_blackbox_current);
BTFIXUPSET_CALL(smp_cross_call, smp4m_cross_call, BTFIXUPCALL_NORM);
BTFIXUPSET_CALL(smp_message_pass, smp4m_message_pass, BTFIXUPCALL_NORM);
BTFIXUPSET_CALL(__hard_smp_processor_id, __smp4m_processor_id, BTFIXUPCALL_NORM);
}