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| author | Vasily Gorbik <gor@linux.ibm.com> | 2022-01-29 00:34:13 +0100 |
|---|---|---|
| committer | Vasily Gorbik <gor@linux.ibm.com> | 2022-03-01 21:05:09 +0100 |
| commit | 42b01a553a56d9bc7c75b700fd274f1ec4a3763f (patch) | |
| tree | 271b1feda483bd44fcaa8ef6b3ae0ead79b5ab5d /arch/s390/kernel/mcount.S | |
| parent | Merge branch 'fixes' into features (diff) | |
| download | linux-42b01a553a56d9bc7c75b700fd274f1ec4a3763f.tar.xz linux-42b01a553a56d9bc7c75b700fd274f1ec4a3763f.zip | |
s390: always use the packed stack layout
-mpacked-stack option has been supported by both minimum
gcc and clang versions for a while. With commit e2bc3e91d91e
("scripts/min-tool-version.sh: Raise minimum clang version to 13.0.0
for s390") minimum clang version now also supports a combination
of flags -mpacked-stack -mbackchain -pg -mfentry and fulfills
all requirements to always enable the packed stack layout.
Reviewed-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Diffstat (limited to 'arch/s390/kernel/mcount.S')
| -rw-r--r-- | arch/s390/kernel/mcount.S | 6 |
1 files changed, 1 insertions, 5 deletions
diff --git a/arch/s390/kernel/mcount.S b/arch/s390/kernel/mcount.S index 9d90b8bc6692..b88205224f3c 100644 --- a/arch/s390/kernel/mcount.S +++ b/arch/s390/kernel/mcount.S @@ -26,12 +26,8 @@ ENDPROC(ftrace_stub) #define STACK_PTREGS_PSW (STACK_PTREGS + __PT_PSW) #define STACK_PTREGS_ORIG_GPR2 (STACK_PTREGS + __PT_ORIG_GPR2) #define STACK_PTREGS_FLAGS (STACK_PTREGS + __PT_FLAGS) -#ifdef __PACK_STACK -/* allocate just enough for r14, r15 and backchain */ +/* packed stack: allocate just enough for r14, r15 and backchain */ #define TRACED_FUNC_FRAME_SIZE 24 -#else -#define TRACED_FUNC_FRAME_SIZE STACK_FRAME_OVERHEAD -#endif .macro ftrace_regs_entry, allregs=0 stg %r14,(__SF_GPRS+8*8)(%r15) # save traced function caller |