From: Heiko Carstens With packed stack the backchain is at a different location. Just use __SF_BACKCHAIN as an offset to store the backchain. Signed-off-by: Heiko Carstens Signed-off-by: Martin Schwidefsky --- arch/s390/kernel/mcount.S | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) Index: quilt-2.6/arch/s390/kernel/mcount.S =================================================================== --- quilt-2.6.orig/arch/s390/kernel/mcount.S +++ quilt-2.6/arch/s390/kernel/mcount.S @@ -5,6 +5,8 @@ * */ +#include + #ifndef CONFIG_64BIT .globl _mcount _mcount: @@ -14,7 +16,7 @@ _mcount: ahi %r15,-96 l %r3,100(%r15) la %r2,0(%r14) - st %r1,0(%r15) + st %r1,__SF_BACKCHAIN(%r15) la %r3,0(%r3) bras %r14,0f .long ftrace_trace_function @@ -38,7 +40,7 @@ _mcount: stg %r14,112(%r15) lgr %r1,%r15 aghi %r15,-160 - stg %r1,0(%r15) + stg %r1,__SF_BACKCHAIN(%r15) lgr %r2,%r14 lg %r3,168(%r15) larl %r14,ftrace_trace_function -- blue skies, Martin. "Reality continues to ruin my life." - Calvin. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/