From 523b44cff279c42c79f7bda709e2fefc30f20a59 Mon Sep 17 00:00:00 2001 From: Heiko Carstens Date: Thu, 11 Oct 2007 22:11:12 +0200 Subject: lockdep: s390: connect the sysexit hook Run the lockdep_sys_exit hook before returning to user space. Reviewed-by: Martin Schwidefsky Signed-off-by: Heiko Carstens Signed-off-by: Peter Zijlstra Signed-off-by: Ingo Molnar --- arch/s390/kernel/entry.S | 12 ++++++++++++ 1 file changed, 12 insertions(+) (limited to 'arch/s390/kernel/entry.S') 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 -- cgit v1.2.3