[S390] ftrace/mcount: fix kernel stack backchain
authorHeiko Carstens <heiko.carstens@de.ibm.com>
Wed, 18 Mar 2009 12:27:34 +0000 (13:27 +0100)
committerMartin Schwidefsky <schwidefsky@de.ibm.com>
Wed, 18 Mar 2009 12:28:12 +0000 (13:28 +0100)
commitcf087343805ebfea2b1234b06fd5f12273e865b1
treeef8638ea143240ca45df1af83a05c4b98c9ab509
parentf55d63854e426e95d7858c2662c2353262a5af70
[S390] ftrace/mcount: fix kernel stack backchain

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 <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
arch/s390/kernel/mcount.S