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| author | Qing Zhang <zhangqing@loongson.cn> | 2022-08-06 11:10:05 +0300 |
|---|---|---|
| committer | Huacai Chen <chenhuacai@loongson.cn> | 2022-08-12 08:10:11 +0300 |
| commit | 4d7bf939df08218e682f7a42952eee3bad4dceb7 (patch) | |
| tree | dce86915387d231ca6d29f3abd71fc1ef99af295 /arch/loongarch/Kconfig | |
| parent | 93a4fa622eb061f75f87f0cf9609ab4e69c67d01 (diff) | |
| download | linux-4d7bf939df08218e682f7a42952eee3bad4dceb7.tar.xz | |
LoongArch: Add USER_STACKTRACE support
To get the best stacktrace output, you can compile your userspace
programs with frame pointers (at least glibc + the app you are tracing).
1, export "CC = gcc -fno-omit-frame-pointer";
2, compile your programs with "CC";
3, use uprobe to get stacktrace output.
...
echo 'p:malloc /usr/lib64/libc.so.6:0x0a4704 size=%r4:u64' > uprobe_events
echo 'p:free /usr/lib64/libc.so.6:0x0a4d50 ptr=%r4:x64' >> uprobe_events
echo 'comm == "demo"' > ./events/uprobes/malloc/filter
echo 'comm == "demo"' > ./events/uprobes/free/filter
echo 1 > ./options/userstacktrace
echo 1 > ./options/sym-userobj
...
Signed-off-by: Qing Zhang <zhangqing@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
Diffstat (limited to 'arch/loongarch/Kconfig')
| -rw-r--r-- | arch/loongarch/Kconfig | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/loongarch/Kconfig b/arch/loongarch/Kconfig index 947cb633744b..2f110a00a930 100644 --- a/arch/loongarch/Kconfig +++ b/arch/loongarch/Kconfig @@ -119,6 +119,7 @@ config LOONGARCH select SWIOTLB select TRACE_IRQFLAGS_SUPPORT select USE_PERCPU_NUMA_NODE_ID + select USER_STACKTRACE_SUPPORT select ZONE_DMA32 config 32BIT |