Messages in this thread | | | Date | Fri, 30 Sep 2022 09:02:20 +0800 | Subject | Re: [PATCH 3/3] arm64/kprobe: Optimize the performance of patching single-step slot | From | "liaochang (A)" <> |
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在 2022/9/30 0:50, Catalin Marinas 写道: > On Tue, Sep 27, 2022 at 10:24:35AM +0800, Liao Chang wrote: >> Single-step slot would not be used until kprobe is enabled, that means >> no race condition occurs on it under SMP, hence it is safe to pacth ss >> slot without stopping machine. >> >> Since I and D caches are coherent within single-step slot from >> aarch64_insn_patch_text_nosync(), hence no need to do it again via >> flush_icache_range(). >> >> Acked-by: Will Deacon <will@kernel.org> >> Acked-by: Masami Hiramatsu (Google) <mhiramat@kernel.org> >> Signed-off-by: Liao Chang <liaochang1@huawei.com> >> --- >> arch/arm64/kernel/probes/kprobes.c | 27 +++++++++++++++++++++------ >> 1 file changed, 21 insertions(+), 6 deletions(-) > > What's your expectation with this series, should the arch maintainers > just pick the individual patches?
Yes, or should i split this series into individual patch?
Thanks.
>
-- BR, Liao, Chang
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