Messages in this thread | | | Subject | Re: [PATCH v5 8/8] LoongArch: Add ORC stack unwinder support | From | Tiezhu Yang <> | Date | Thu, 7 Dec 2023 15:23:17 +0800 |
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On 12/03/2023 08:42 PM, Huacai Chen wrote: > On Wed, Nov 29, 2023 at 9:07 PM Tiezhu Yang <yangtiezhu@loongson.cn> wrote: >> >> The kernel CONFIG_UNWINDER_ORC option enables the ORC unwinder, which is >> similar in concept to a DWARF unwinder. The difference is that the format >> of the ORC data is much simpler than DWARF, which in turn allows the ORC >> unwinder to be much simpler and faster.
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>> diff --git a/arch/loongarch/lib/Makefile b/arch/loongarch/lib/Makefile >> index a77bf160bfc4..e3023d9a508c 100644 >> --- a/arch/loongarch/lib/Makefile >> +++ b/arch/loongarch/lib/Makefile >> @@ -3,6 +3,8 @@ >> # Makefile for LoongArch-specific library files. >> # >> >> +OBJECT_FILES_NON_STANDARD := y >> + >> lib-y += delay.o memset.o memcpy.o memmove.o \ >> clear_user.o copy_user.o csum.o dump_tlb.o unaligned.o >> > I have a draft live-patch patch here: > https://github.com/chenhuacai/linux/commit/744942cbf456b320f2333638e4bd27d35900284c > > But we get such an error: > > # selftests: livepatch: test-ftrace.sh > > [48/1865] > [14936.262721] livepatch: failed to register ftrace handler for > function 'cmdline_proc_show' (-16) > # TEST: livepatch interaction with ftrace_enabled sysctl ...
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> I think it is probably because we skip mem* functions here.
I did not test livepatch which is a separate new feature, let me try it, maybe it needs some time because I am very busy with some other stuffs.
Thanks, Tiezhu
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