From: Masami Hiramatsu <mhiramat@kernel.org>
To: Steven Rostedt <rostedt@goodmis.org>
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Subject: Re: [PATCH v2 1/3] module: Rename module_alloc() to text_alloc() and move to kernel proper
Date: Wed, 15 Jul 2020 14:03:01 +0900 [thread overview]
Message-ID: <20200715140301.be04a47b1f0da4d6bec1cb84@kernel.org> (raw)
In-Reply-To: <20200714100345.38354010@oasis.local.home>
On Tue, 14 Jul 2020 10:03:45 -0400
Steven Rostedt <rostedt@goodmis.org> wrote:
> On Tue, 14 Jul 2020 14:33:14 +0100
> Mark Rutland <mark.rutland@arm.com> wrote:
>
> > > Should work for all cases. Yes, we might then want something like a per
> > > arch:
> > >
> > > {BPF,FTRACE,KPROBE}_TEXT_TYPE
> >
> > ... at that point why not:
> >
> > text_alloc_ftrace();
> > text_alloc_module();
> > text_alloc_bpf();
> > text_alloc_kprobe();
>
> I don't know about bpf and kprobes, but for ftrace, the only place that
> it allocates text happens to be in arch specific code.
>
> If you want something special for ftrace, you could just add your own
> function. But for x86, a text_alloc_immediate() would work.
> (BTW, I like the function names over the enums)
kprobes will need the text_alloc_immediate() too, since it will use
the trampoline buffer where jumps to/from kernel code/modules.
Thanks,
--
Masami Hiramatsu <mhiramat@kernel.org>
_______________________________________________
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linux-riscv@lists.infradead.org
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next prev parent reply other threads:[~2020-07-15 5:03 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-14 9:45 [PATCH v2 0/3] kprobes: Remove MODULE dependency Jarkko Sakkinen
2020-07-14 9:45 ` [PATCH v2 1/3] module: Rename module_alloc() to text_alloc() and move to kernel proper Jarkko Sakkinen
2020-07-14 9:50 ` Russell King - ARM Linux admin
2020-07-14 10:28 ` Will Deacon
2020-07-14 11:29 ` Peter Zijlstra
2020-07-14 12:19 ` Ard Biesheuvel
2020-07-14 13:01 ` Peter Zijlstra
2020-07-14 13:33 ` Mark Rutland
2020-07-14 13:47 ` Ard Biesheuvel
2020-07-14 14:03 ` Steven Rostedt
2020-07-15 5:03 ` Masami Hiramatsu [this message]
2020-07-14 16:31 ` Jarkko Sakkinen
2020-07-14 16:46 ` Peter Zijlstra
2020-07-15 8:15 ` David Laight
2020-07-14 16:42 ` Russell King - ARM Linux admin
2020-07-14 12:25 ` Jarkko Sakkinen
2020-07-14 13:56 ` Jessica Yu
2020-07-14 15:44 ` Steven Rostedt
2020-07-14 16:37 ` Jarkko Sakkinen
2020-07-16 16:49 ` Christophe Leroy
2020-07-23 1:51 ` Jarkko Sakkinen
2020-07-23 12:42 ` Ard Biesheuvel
2020-07-24 7:36 ` Jarkko Sakkinen
2020-07-24 8:05 ` Jessica Yu
2020-07-24 15:46 ` Jarkko Sakkinen
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