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[S390] cpu shutdown rework

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Let one master cpu kill all other cpus instead of sending an external
interrupt to all other cpus so they can kill themselves.
Simplifies reipl/shutdown functions a lot.

Signed-off-by: Heiko Carstens <[email protected]>
Signed-off-by: Martin Schwidefsky <[email protected]>
This commit is contained in:
Heiko Carstens 2006-12-04 15:40:33 +01:00 • committed by Martin Schwidefsky
commit c6b5b847a7
5 changed files with 58 additions and 180 deletions
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8
include/asm-s390/smp.h
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@ -18,6 +18,7 @@
#include <asm/lowcore.h>
#include <asm/sigp.h>
#include <asm/ptrace.h>
/*
s390 specific smp.c headers
@ -101,6 +102,13 @@ smp_call_function_on(void (*func) (void *info), void *info,
func(info);
return 0;
}
static inline void smp_send_stop(void)
{
/* Disable all interrupts/machine checks */
__load_psw_mask(PSW_KERNEL_BITS & ~PSW_MASK_MCHECK);
}
#define smp_cpu_not_running(cpu) 1
#define smp_get_cpu(cpu) ({ 0; })
#define smp_put_cpu(cpu) ({ 0; })