projects / platform / kernel / linux-starfive.git / commit
? search:
summary | shortlog | log | commit | commitdiff | tree
(parent: 1a69f7a) | patch
LoongArch: ptrace: Add function argument access API
authorQing Zhang <zhangqing@loongson.cn>
Sat, 25 Feb 2023 07:52:57 +0000 (15:52 +0800)
committerHuacai Chen <chenhuacai@loongson.cn>
Sat, 25 Feb 2023 14:12:17 +0000 (22:12 +0800)
commit356bd6f23682f11f7afe923d86c7f5f852b97fb2
treeec88f7e3445613d5e304f22d3f6e9840f88139eftree | snapshot
parent1a69f7a161a78aead07cd4b811d796950e892fa4commit | diff
LoongArch: ptrace: Add function argument access API

Add regs_get_argument() which returns N th argument of the function
call, This enables ftrace kprobe events to access kernel function
arguments via $argN syntax for later use.

E.g.:
echo 'p bio_add_page arg1=$arg1' > kprobe_events
bash: echo: write error: Invalid argument

Signed-off-by: Qing Zhang <zhangqing@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
arch/loongarch/Kconfig diff | blob | history
arch/loongarch/include/asm/ptrace.h diff | blob | history
Domain: System / Kernel;