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

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