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| author |   Martin Schwidefsky <schwidefsky@de.ibm.com> | 2019-02-18 16:51:28 +0100 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2019-05-02 13:54:11 +0200 |
| commit | ec7bf4789d95a0053bac0dfa36fbefd8cc584eea (patch) | |
| tree | 5ad08bd5f30c065e312944baf8eafd0b4766f654 /arch/s390/include/asm | |
| parent | s390/unwind: introduce stack unwind API (diff) | |
| download | linux-dev-ec7bf4789d95a0053bac0dfa36fbefd8cc584eea.tar.xz linux-dev-ec7bf4789d95a0053bac0dfa36fbefd8cc584eea.zip | |
s390/ftrace: use HAVE_FUNCTION_GRAPH_RET_ADDR_PTR
Make the call chain more reliable by tagging the ftrace stack entries
with the stack pointer that is associated with the return address.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/include/asm')
| -rw-r--r-- | arch/s390/include/asm/ftrace.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/s390/include/asm/ftrace.h b/arch/s390/include/asm/ftrace.h index 6e0ed0338785..68d362f8d6c1 100644 --- a/arch/s390/include/asm/ftrace.h +++ b/arch/s390/include/asm/ftrace.h @@ -11,6 +11,8 @@ #define MCOUNT_RETURN_FIXUP 18 #endif +#define HAVE_FUNCTION_GRAPH_RET_ADDR_PTR + #ifndef __ASSEMBLY__ #ifdef CONFIG_CC_IS_CLANG |