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[S390] cpu hotplug and accounting values

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Reset the cpu timer to the maximum value and correctly initialize the
cpu accounting values in the lowcore when the cpu is started.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Martin Schwidefsky
2009-04-14 15:36:27 +02:00
parent b86ccca49c
commit 5b409ed17b
3 changed files with 28 additions and 0 deletions
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13
arch/s390/kernel/entry64.S
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@ -831,14 +831,27 @@ mcck_return:
__CPUINIT
.globl restart_int_handler
restart_int_handler:
basr %r1,0
restart_base:
spt restart_vtime-restart_base(%r1)
stck __LC_LAST_UPDATE_CLOCK
mvc __LC_LAST_UPDATE_TIMER(8),restart_vtime-restart_base(%r1)
mvc __LC_EXIT_TIMER(8),restart_vtime-restart_base(%r1)
lg %r15,__LC_SAVE_AREA+120 # load ksp
lghi %r10,__LC_CREGS_SAVE_AREA
lctlg %c0,%c15,0(%r10) # get new ctl regs
lghi %r10,__LC_AREGS_SAVE_AREA
lam %a0,%a15,0(%r10)
lmg %r6,%r15,__SF_GPRS(%r15) # load registers from clone
lg %r1,__LC_THREAD_INFO
mvc __LC_USER_TIMER(8),__TI_user_timer(%r1)
mvc __LC_SYSTEM_TIMER(8),__TI_system_timer(%r1)
xc __LC_STEAL_TIMER(8),__LC_STEAL_TIMER
stosm __SF_EMPTY(%r15),0x04 # now we can turn dat on
jg start_secondary
.align 8
restart_vtime:
.long 0x7fffffff,0xffffffff
.previous
#else
/*