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Message-Id: <1465445930-3960-5-git-send-email-zlim.lnx@gmail.com> Date: Wed, 8 Jun 2016 21:18:50 -0700 From: Zi Shen Lim <zlim.lnx@...il.com> To: "David S. Miller" <davem@...emloft.net>, Catalin Marinas <catalin.marinas@....com>, Will Deacon <will.deacon@....com> Cc: Zi Shen Lim <zlim.lnx@...il.com>, Yang Shi <yang.shi@...aro.org>, Alexei Starovoitov <ast@...nel.org>, Daniel Borkmann <daniel@...earbox.net>, netdev@...r.kernel.org, linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org Subject: [PATCH net-next v3 4/4] arm64: bpf: optimize LD_ABS, LD_IND Remove superfluous stack frame, saving us 3 instructions for every LD_ABS or LD_IND. Signed-off-by: Zi Shen Lim <zlim.lnx@...il.com> --- arch/arm64/net/bpf_jit_comp.c | 3 --- 1 file changed, 3 deletions(-) diff --git a/arch/arm64/net/bpf_jit_comp.c b/arch/arm64/net/bpf_jit_comp.c index 7ae304e..b2fc97a 100644 --- a/arch/arm64/net/bpf_jit_comp.c +++ b/arch/arm64/net/bpf_jit_comp.c @@ -731,11 +731,8 @@ emit_cond_jmp: emit_a64_mov_i64(r3, size, ctx); emit(A64_SUB_I(1, r4, fp, STACK_SIZE), ctx); emit_a64_mov_i64(r5, (unsigned long)bpf_load_pointer, ctx); - emit(A64_PUSH(A64_FP, A64_LR, A64_SP), ctx); - emit(A64_MOV(1, A64_FP, A64_SP), ctx); emit(A64_BLR(r5), ctx); emit(A64_MOV(1, r0, A64_R(0)), ctx); - emit(A64_POP(A64_FP, A64_LR, A64_SP), ctx); jmp_offset = epilogue_offset(ctx); check_imm19(jmp_offset); -- 1.9.1
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