Re: [PATCH v2] riscv: support PREEMPT_DYNAMIC with static keys
From: patchwork-bot+linux-riscv
Date: Wed Aug 30 2023 - 15:05:25 EST
Hello:
This patch was applied to riscv/linux.git (for-next)
by Palmer Dabbelt <palmer@xxxxxxxxxxxx>:
On Mon, 17 Jul 2023 00:49:25 +0800 you wrote:
> Currently, each architecture can support PREEMPT_DYNAMIC through
> either static calls or static keys. To support PREEMPT_DYNAMIC on
> riscv, we face three choices:
>
> 1. only add static calls support to riscv
> As Mark pointed out in commit 99cf983cc8bc ("sched/preempt: Add
> PREEMPT_DYNAMIC using static keys"), static keys "...should have
> slightly lower overhead than non-inline static calls, as this
> effectively inlines each trampoline into the start of its callee. This
> may avoid redundant work, and may integrate better with CFI schemes."
> So even we add static calls(without inline static calls) to riscv,
> static keys is still a better choice.
>
> [...]
Here is the summary with links:
- [v2] riscv: support PREEMPT_DYNAMIC with static keys
https://git.kernel.org/riscv/c/15e062726f55
You are awesome, thank you!
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