From: Steven Rostedt <rostedt@goodmis.org>
To: Jessica Yu <jeyu@kernel.org>
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Subject: Re: [PATCH v2 1/3] module: Rename module_alloc() to text_alloc() and move to kernel proper
Date: Tue, 14 Jul 2020 11:44:37 -0400 [thread overview]
Message-ID: <20200714114437.7f0025b5@oasis.local.home> (raw)
In-Reply-To: <20200714135651.GA27819@linux-8ccs>
On Tue, 14 Jul 2020 15:56:52 +0200
Jessica Yu <jeyu@kernel.org> wrote:
> As Ard and Will have already explained, the major issue I'm having
> with this is that we're taking module_alloc(), an allocator that was
> originally specific to module loading, and turning it into a generic
> interface to be used by other subsystems. You're pulling in all the
> module loading semantics that vary by architecture and expecting it to
> work as a generic text allocator. I'm not against the existence of a
> generic text_alloc() but I would very much rather that module_alloc()
> be left alone to the module loader and instead work on introducing a
> *separate* generic text_alloc() interface that would work for its
> intended users (kprobes, bpf, etc) and have existing users of
> module_alloc() switch to that instead.
Looks like the consensus is to create a separate text_alloc() that can
be used when modules are not configured in for things like ftrace
dynamic trampolines, and keep module_alloc() untouched.
For those concerned about added unused code for architectures that
don't need text_alloc(), we can always create a config called:
CONFIG_ARCH_NEED_TEXT_ALLOC, and the arch can add that to its list of
kconfigs if it intends to use text_alloc().
-- Steve
next prev parent reply other threads:[~2020-07-14 19:26 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
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 [this message]
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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