[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>
This commit is contained in:
parent
f55d63854e
commit
cf08734380
|
@ -5,6 +5,8 @@
|
|||
*
|
||||
*/
|
||||
|
||||
#include <asm/asm-offsets.h>
|
||||
|
||||
#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
|
||||
|
|
Loading…
Reference in New Issue