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| author | Heiko Carstens <heiko.carstens@de.ibm.com> | 2007-10-11 22:11:12 +0200 |
|---|---|---|
| committer | Peter Zijlstra <a.p.zijlstra@chello.nl> | 2007-10-11 22:11:12 +0200 |
| commit | 523b44cff279c42c79f7bda709e2fefc30f20a59 (patch) | |
| tree | 544c308d3e5e397b5b101968d617185e4cfdb291 /arch/s390 | |
| parent | 10cd706d180b62a61aace5b440247c8785026ac1 (diff) | |
| download | linux-523b44cff279c42c79f7bda709e2fefc30f20a59.tar.bz2 | |
lockdep: s390: connect the sysexit hook
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>
Diffstat (limited to 'arch/s390')
| -rw-r--r-- | arch/s390/kernel/entry.S | 12 | ||||
| -rw-r--r-- | arch/s390/kernel/entry64.S | 9 |
2 files changed, 21 insertions, 0 deletions
diff --git a/arch/s390/kernel/entry.S b/arch/s390/kernel/entry.S index f3bceb165321..139ca153d5cc 100644 --- a/arch/s390/kernel/entry.S +++ b/arch/s390/kernel/entry.S @@ -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 diff --git a/arch/s390/kernel/entry64.S b/arch/s390/kernel/entry64.S index 9c0d5cc8269d..05e26d1fdf40 100644 --- a/arch/s390/kernel/entry64.S +++ b/arch/s390/kernel/entry64.S @@ -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 # |