diff options
| author | Zong Li <zong@andestech.com> | 2018-08-15 05:45:59 +0300 |
|---|---|---|
| committer | Greentime Hu <greentime@andestech.com> | 2018-09-04 09:45:17 +0300 |
| commit | a18082575c664847d36c6ca030b09ce8d93aec2f (patch) | |
| tree | 96070f10fadd478d6f644d639b899d9bb9311650 /arch/nds32/Makefile | |
| parent | 487913ab18c215b06611c4c91c7e905fc0960eb8 (diff) | |
| download | linux-a18082575c664847d36c6ca030b09ce8d93aec2f.tar.xz | |
nds32/ftrace: Support static function tracer
This patch support the static function tracer. On nds32 ABI, we need to
always push return address to stack for __builtin_return_address can
work correctly, otherwise, it will get the wrong value of $lp at leaf
function.
Signed-off-by: Zong Li <zong@andestech.com>
Acked-by: Greentime Hu <greentime@andestech.com>
Signed-off-by: Greentime Hu <greentime@andestech.com>
Diffstat (limited to 'arch/nds32/Makefile')
| -rw-r--r-- | arch/nds32/Makefile | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/nds32/Makefile b/arch/nds32/Makefile index 63f4f173e5f4..3509fac10491 100644 --- a/arch/nds32/Makefile +++ b/arch/nds32/Makefile @@ -5,6 +5,10 @@ KBUILD_DEFCONFIG := defconfig comma = , +ifdef CONFIG_FUNCTION_TRACER +arch-y += -malways-save-lp -mno-relax +endif + KBUILD_CFLAGS += $(call cc-option, -mno-sched-prolog-epilog) KBUILD_CFLAGS += -mcmodel=large |