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lockdep: s390: connect the sysexit hook

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Run the lockdep_sys_exit hook before returning to user space.

Reviewed-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Heiko Carstens 2007-10-11 22:11:12 +02:00 committed by Peter Zijlstra
parent 10cd706d18
commit 523b44cff2
2 changed files with 21 additions and 0 deletions
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12
arch/s390/kernel/entry.S
View File

@ -68,9 +68,15 @@ STACK_SIZE = 1 << STACK_SHIFT
l %r1,BASED(.Ltrace_irq_off)
basr %r14,%r1
.endm
.macro LOCKDEP_SYS_EXIT
l %r1,BASED(.Llockdep_sys_exit)
basr %r14,%r1
.endm
#else
#define TRACE_IRQS_ON
#define TRACE_IRQS_OFF
#define LOCKDEP_SYS_EXIT
#endif
/*
@ -260,6 +266,7 @@ sysc_return:
bno BASED(sysc_leave)
tm __TI_flags+3(%r9),_TIF_WORK_SVC
bnz BASED(sysc_work) # there is work to do (signals etc.)
LOCKDEP_SYS_EXIT
sysc_leave:
RESTORE_ALL __LC_RETURN_PSW,1
@ -283,6 +290,7 @@ sysc_work:
bo BASED(sysc_restart)
tm __TI_flags+3(%r9),_TIF_SINGLE_STEP
bo BASED(sysc_singlestep)
LOCKDEP_SYS_EXIT
b BASED(sysc_leave)
#
@ -572,6 +580,7 @@ io_return:
#endif
tm __TI_flags+3(%r9),_TIF_WORK_INT
bnz BASED(io_work) # there is work to do (signals etc.)
LOCKDEP_SYS_EXIT
io_leave:
RESTORE_ALL __LC_RETURN_PSW,0
io_done:
@ -618,6 +627,7 @@ io_work_loop:
bo BASED(io_reschedule)
tm __TI_flags+3(%r9),(_TIF_SIGPENDING | _TIF_RESTORE_SIGMASK)
bnz BASED(io_sigpending)
LOCKDEP_SYS_EXIT
b BASED(io_leave)
#
@ -1040,6 +1050,8 @@ cleanup_io_leave_insn:
.Ltrace_irq_on: .long trace_hardirqs_on
.Ltrace_irq_off:
.long trace_hardirqs_off
.Llockdep_sys_exit:
.long lockdep_sys_exit
#endif
.Lcritical_start:
.long __critical_start + 0x80000000

9
arch/s390/kernel/entry64.S
View File

@ -66,9 +66,14 @@ _TIF_WORK_INT = (_TIF_SIGPENDING | _TIF_RESTORE_SIGMASK | _TIF_NEED_RESCHED | \
.macro TRACE_IRQS_OFF
brasl %r14,trace_hardirqs_off
.endm
.macro LOCKDEP_SYS_EXIT
brasl %r14,lockdep_sys_exit
.endm
#else
#define TRACE_IRQS_ON
#define TRACE_IRQS_OFF
#define LOCKDEP_SYS_EXIT
#endif
.macro STORE_TIMER lc_offset
@ -255,6 +260,7 @@ sysc_return:
jno sysc_leave
tm __TI_flags+7(%r9),_TIF_WORK_SVC
jnz sysc_work # there is work to do (signals etc.)
LOCKDEP_SYS_EXIT
sysc_leave:
RESTORE_ALL __LC_RETURN_PSW,1
@ -278,6 +284,7 @@ sysc_work:
jo sysc_restart
tm __TI_flags+7(%r9),_TIF_SINGLE_STEP
jo sysc_singlestep
LOCKDEP_SYS_EXIT
j sysc_leave
#
@ -558,6 +565,7 @@ io_return:
#endif
tm __TI_flags+7(%r9),_TIF_WORK_INT
jnz io_work # there is work to do (signals etc.)
LOCKDEP_SYS_EXIT
io_leave:
RESTORE_ALL __LC_RETURN_PSW,0
io_done:
@ -605,6 +613,7 @@ io_work_loop:
jo io_reschedule
tm __TI_flags+7(%r9),(_TIF_SIGPENDING | _TIF_RESTORE_SIGMASK)
jnz io_sigpending
LOCKDEP_SYS_EXIT
j io_leave
#