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| author | Tiezhu Yang <yangtiezhu@loongson.cn> | 2023-06-29 15:58:44 +0300 |
|---|---|---|
| committer | Huacai Chen <chenhuacai@loongson.cn> | 2023-06-29 15:58:44 +0300 |
| commit | 19bc6cb6409289106d38f9ad1b2ecf73980df6b5 (patch) | |
| tree | 23e10110a9a710a1ae89e026f971e735a91ec19a /arch/loongarch/Kconfig | |
| parent | 6e320363339b585a36bf40d74592db3db021e017 (diff) | |
| download | linux-19bc6cb6409289106d38f9ad1b2ecf73980df6b5.tar.xz | |
LoongArch: Add uprobes support
Uprobes is the user-space counterpart to kprobes, this patch adds
uprobes support for LoongArch.
Here is a simple example with CONFIG_UPROBE_EVENTS=y:
# cat test.c
#include <stdio.h>
int add(int a, int b)
{
return a + b;
}
int main()
{
return add(2, 7);
}
# gcc test.c -o /tmp/test
# nm /tmp/test | grep add
0000000120004194 T add
# cd /sys/kernel/debug/tracing
# echo > uprobe_events
# echo "p:myuprobe /tmp/test:0x4194 %r4 %r5" > uprobe_events
# echo "r:myuretprobe /tmp/test:0x4194 %r4" >> uprobe_events
# echo 1 > events/uprobes/enable
# echo 1 > tracing_on
# /tmp/test
# cat trace
...
# TASK-PID CPU# ||||| TIMESTAMP FUNCTION
# | | | ||||| | |
test-1060 [001] DNZff 1015.770620: myuprobe: (0x120004194) arg1=0x2 arg2=0x7
test-1060 [001] DNZff 1015.770930: myuretprobe: (0x1200041f0 <- 0x120004194) arg1=0x9
Tested-by: Jeff Xie <xiehuan09@gmail.com>
Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
Diffstat (limited to 'arch/loongarch/Kconfig')
| -rw-r--r-- | arch/loongarch/Kconfig | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/loongarch/Kconfig b/arch/loongarch/Kconfig index b787f8fcbac7..94ca147981cf 100644 --- a/arch/loongarch/Kconfig +++ b/arch/loongarch/Kconfig @@ -643,6 +643,9 @@ config ARCH_MMAP_RND_BITS_MIN config ARCH_MMAP_RND_BITS_MAX default 18 +config ARCH_SUPPORTS_UPROBES + def_bool y + menu "Power management options" config ARCH_SUSPEND_POSSIBLE |