diff mbox series

[bpf-next,v2,1/3] bpf, arm64: Simplify if logic in emit_lse_atomic()

Message ID e8520e5503a489e2dea8526077976ae5a0ab1849.1735868489.git.yepeilin@google.com (mailing list archive)
State Accepted
Commit 0a5807219a862ea1e250c665325b9bffb5940de0
Delegated to: BPF
Headers show
Series [bpf-next,v2,1/3] bpf, arm64: Simplify if logic in emit_lse_atomic() | expand

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Commit Message

Peilin Ye Jan. 3, 2025, 2:02 a.m. UTC 
Delete that unnecessary outer if clause.  No functional change.

Signed-off-by: Peilin Ye <yepeilin@google.com>
---
 arch/arm64/net/bpf_jit_comp.c | 18 ++++++++----------
 1 file changed, 8 insertions(+), 10 deletions(-)

Comments

Xu Kuohai Jan. 6, 2025, 6:42 a.m. UTC | #1 
On 1/3/2025 10:02 AM, Peilin Ye wrote:
> Delete that unnecessary outer if clause.  No functional change.
> 
> Signed-off-by: Peilin Ye <yepeilin@google.com>
> ---
>   arch/arm64/net/bpf_jit_comp.c | 18 ++++++++----------
>   1 file changed, 8 insertions(+), 10 deletions(-)
> 
> diff --git a/arch/arm64/net/bpf_jit_comp.c b/arch/arm64/net/bpf_jit_comp.c
> index 66708b95493a..9040033eb1ea 100644
> --- a/arch/arm64/net/bpf_jit_comp.c
> +++ b/arch/arm64/net/bpf_jit_comp.c
> @@ -648,16 +648,14 @@ static int emit_lse_atomic(const struct bpf_insn *insn, struct jit_ctx *ctx)
>   	const s16 off = insn->off;
>   	u8 reg = dst;
>   
> -	if (off || arena) {
> -		if (off) {
> -			emit_a64_mov_i(1, tmp, off, ctx);
> -			emit(A64_ADD(1, tmp, tmp, dst), ctx);
> -			reg = tmp;
> -		}
> -		if (arena) {
> -			emit(A64_ADD(1, tmp, reg, arena_vm_base), ctx);
> -			reg = tmp;
> -		}
> +	if (off) {
> +		emit_a64_mov_i(1, tmp, off, ctx);
> +		emit(A64_ADD(1, tmp, tmp, dst), ctx);
> +		reg = tmp;
> +	}
> +	if (arena) {
> +		emit(A64_ADD(1, tmp, reg, arena_vm_base), ctx);
> +		reg = tmp;
>   	}
>   
>   	switch (insn->imm) {

Thanks for the improvements.

For the series:

Acked-by: Xu Kuohai <xukuohai@huawei.com>
patchwork-bot+netdevbpf@kernel.org Jan. 6, 2025, 2:20 p.m. UTC | #2 
Hello:

This series was applied to bpf/bpf-next.git (master)
by Daniel Borkmann <daniel@iogearbox.net>:

On Fri,  3 Jan 2025 02:02:53 +0000 you wrote:
> Delete that unnecessary outer if clause.  No functional change.
> 
> Signed-off-by: Peilin Ye <yepeilin@google.com>
> ---
>  arch/arm64/net/bpf_jit_comp.c | 18 ++++++++----------
>  1 file changed, 8 insertions(+), 10 deletions(-)

Here is the summary with links:
  - [bpf-next,v2,1/3] bpf, arm64: Simplify if logic in emit_lse_atomic()
    https://git.kernel.org/bpf/bpf-next/c/0a5807219a86
  - [bpf-next,v2,2/3] bpf, arm64: Factor out emit_a64_add_i()
    https://git.kernel.org/bpf/bpf-next/c/66bb58ac06c2
  - [bpf-next,v2,3/3] bpf, arm64: Emit A64_{ADD,SUB}_I when possible in emit_{lse,ll_sc}_atomic()
    https://git.kernel.org/bpf/bpf-next/c/8c21f88407d2

You are awesome, thank you!
diff mbox series

Patch

diff --git a/arch/arm64/net/bpf_jit_comp.c b/arch/arm64/net/bpf_jit_comp.c
index 66708b95493a..9040033eb1ea 100644
--- a/arch/arm64/net/bpf_jit_comp.c
+++ b/arch/arm64/net/bpf_jit_comp.c
@@ -648,16 +648,14 @@  static int emit_lse_atomic(const struct bpf_insn *insn, struct jit_ctx *ctx)
 	const s16 off = insn->off;
 	u8 reg = dst;
 
-	if (off || arena) {
-		if (off) {
-			emit_a64_mov_i(1, tmp, off, ctx);
-			emit(A64_ADD(1, tmp, tmp, dst), ctx);
-			reg = tmp;
-		}
-		if (arena) {
-			emit(A64_ADD(1, tmp, reg, arena_vm_base), ctx);
-			reg = tmp;
-		}
+	if (off) {
+		emit_a64_mov_i(1, tmp, off, ctx);
+		emit(A64_ADD(1, tmp, tmp, dst), ctx);
+		reg = tmp;
+	}
+	if (arena) {
+		emit(A64_ADD(1, tmp, reg, arena_vm_base), ctx);
+		reg = tmp;
 	}
 
 	switch (insn->imm) {