From: Oleg Nesterov <oleg@redhat.com>
To: Andrii Nakryiko <andrii.nakryiko@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>,
Steven Rostedt <rostedt@goodmis.org>,
Masami Hiramatsu <mhiramat@kernel.org>,
Andrii Nakryiko <andrii@kernel.org>,
Nathan Chancellor <nathan@kernel.org>,
linux-kernel@vger.kernel.org, linux-trace-kernel@vger.kernel.org,
bpf@vger.kernel.org
Subject: Re: [PATCH] uprobe: Do not use UPROBE_SWBP_INSN as static initializer
Date: Thu, 20 Jun 2024 21:38:46 +0200 [thread overview]
Message-ID: <20240620193846.GA7165@redhat.com> (raw)
In-Reply-To: <CAEf4BzbN4Li2iesQm28ZYEV2nXsLre8_qknmvkSy510EV7h=SA@mail.gmail.com>
On 06/20, Andrii Nakryiko wrote:
>
> Can we instead ask loongarch folks to rewrite it to be a constant?
> Having this as a function call is both an inconvenience and potential
> performance problem (a minor one, but still). I would imagine it's not
> hard to hard-code an instruction as a constant here.
I was going to ask the same question when I saw the bug report ;)
The same for other users of larch_insn_gen_break().
But I can't understand what does it do, it calls emit_break() and
git grep -w emit_break finds nothing.
Oleg.
next prev parent reply other threads:[~2024-06-20 19:40 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-06-18 19:43 [PATCH] uprobe: Do not use UPROBE_SWBP_INSN as static initializer Jiri Olsa
2024-06-20 19:00 ` Andrii Nakryiko
2024-06-20 19:38 ` Oleg Nesterov [this message]
2024-06-20 21:30 ` Andrii Nakryiko
2024-06-21 12:01 ` Oleg Nesterov
2024-06-21 13:17 ` Jiri Olsa
2024-06-27 13:44 ` Jiri Olsa
2024-06-27 14:20 ` Masami Hiramatsu
2024-06-27 15:29 ` Oleg Nesterov
2024-06-27 16:02 ` [PATCH] LoongArch: uprobes: make UPROBE_SWBP_INSN/UPROBE_XOLBP_INSN constant Oleg Nesterov
2024-06-27 16:51 ` Andrii Nakryiko
2024-06-27 17:38 ` Oleg Nesterov
2024-06-28 4:30 ` Masami Hiramatsu
2024-06-29 12:48 ` Tiezhu Yang
2024-06-29 13:38 ` Oleg Nesterov
2024-06-29 13:48 ` Huacai Chen
2024-06-29 15:03 ` [PATCH] LoongArch: make the users of larch_insn_gen_break() constant Oleg Nesterov
2024-06-30 1:43 ` Huacai Chen
2024-06-30 6:29 ` Oleg Nesterov
2024-07-01 6:22 ` Tiezhu Yang
2024-07-01 15:01 ` Huacai Chen
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