linux-kernel - Re: [PATCH v2 0/4] arm64/ftrace: move to DYNAMIC_FTRACE_WITH

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Date:   Fri, 18 Nov 2022 19:40:47 +0000
From:   Will Deacon <will@...nel.org>
To:     Mark Rutland <mark.rutland@....com>, linux-kernel@...r.kernel.org
Cc:     catalin.marinas@....com, kernel-team@...roid.com,
        Will Deacon <will@...nel.org>,
        linux-arm-kernel@...ts.infradead.org, rostedt@...dmis.org,
        revest@...omium.org, mhiramat@...nel.org
Subject: Re: [PATCH v2 0/4] arm64/ftrace: move to DYNAMIC_FTRACE_WITH_ARGS

On Thu, 3 Nov 2022 17:05:16 +0000, Mark Rutland wrote:
> This series replaces arm64's support for FTRACE_WITH_REGS with support
> for FTRACE_WITH_ARGS. This removes some overhead and complexity, and
> removes some latent issues with inconsistent presentation of struct
> pt_regs (which can only be reliably saved/restored at exception
> boundaries).
> 
> The existing FTRACE_WITH_REGS support was added for two major reasons:
> 
> [...]

Applied to arm64 (for-next/ftrace), thanks!

[1/4] ftrace: pass fregs to arch_ftrace_set_direct_caller()
      https://git.kernel.org/arm64/c/9705bc709604
[2/4] ftrace: rename ftrace_instruction_pointer_set() -> ftrace_regs_set_instruction_pointer()
      https://git.kernel.org/arm64/c/0ef86097f127
[3/4] ftrace: abstract DYNAMIC_FTRACE_WITH_ARGS accesses
      https://git.kernel.org/arm64/c/94d095ffa0e1
[4/4] ftrace: arm64: move from REGS to ARGS
      https://git.kernel.org/arm64/c/26299b3f6ba2

Cheers,
-- 
Will

https://fixes.arm64.dev
https://next.arm64.dev
https://will.arm64.dev