From: Masami Hiramatsu (Google) <mhiramat@kernel.org>
To: Liao Chang <liaochang1@huawei.com>
Cc: <catalin.marinas@arm.com>, <will@kernel.org>, <guoren@kernel.org>,
<paul.walmsley@sifive.com>, <palmer@dabbelt.com>,
<aou@eecs.berkeley.edu>, <rostedt@goodmis.org>, <maz@kernel.org>,
<alexandru.elisei@arm.com>,
<linux-arm-kernel@lists.infradead.org>,
<linux-kernel@vger.kernel.org>, <linux-csky@vger.kernel.org>,
<linux-riscv@lists.infradead.org>
Subject: Re: [PATCH V2 0/3] kprobe: Optimize the performance of patching ss
Date: Tue, 13 Sep 2022 20:19:09 +0900 [thread overview]
Message-ID: <20220913201909.2c7e38a40e719461e3c19b12@kernel.org> (raw)
In-Reply-To: <20220913033454.104519-1-liaochang1@huawei.com>
On Tue, 13 Sep 2022 11:34:51 +0800
Liao Chang <liaochang1@huawei.com> 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.
All these patches look good to me, since single-step slot must not
be executed until it is prepared.
Acked-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
for this series.
But I need Ack by each architecture maintainer.
Thank you,
>
> v2:
> Backport riscv patch to cksy and arm64.
>
> Liao Chang (3):
> riscv/kprobe: Optimize the performance of patching single-step slot
> csky/kprobe: Optimize the performance of patching single-step slot
> arm64/kprobe: Optimize the performance of patching single-step slot
>
> arch/arm64/kernel/probes/kprobes.c | 5 ++---
> arch/csky/kernel/probes/kprobes.c | 6 +++++-
> arch/riscv/kernel/probes/kprobes.c | 8 +++++---
> 3 files changed, 12 insertions(+), 7 deletions(-)
>
> --
> 2.17.1
>
--
Masami Hiramatsu (Google) <mhiramat@kernel.org>
prev parent reply other threads:[~2022-09-13 11:19 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-09-13 3:34 [PATCH V2 0/3] kprobe: Optimize the performance of patching ss Liao Chang
2022-09-13 3:34 ` [PATCH V2 1/3] riscv/kprobe: Optimize the performance of patching single-step slot Liao Chang
2022-09-13 3:34 ` [PATCH V2 2/3] csky/kprobe: " Liao Chang
2022-09-13 3:34 ` [PATCH V2 3/3] arm64/kprobe: " Liao Chang
2022-09-22 13:38 ` Will Deacon
2022-09-23 1:24 ` liaochang (A)
2022-09-13 11:19 ` Masami Hiramatsu [this message]
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