From: Zi Shen Lim Date: Thu, 9 Jun 2016 04:18:50 +0000 (-0700) Subject: arm64: bpf: optimize LD_ABS, LD_IND X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=643c332d519bdfbf80d21f40d1c0aa0ccf3ec1cb;p=linux-beck.git 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 Signed-off-by: David S. Miller --- diff --git a/arch/arm64/net/bpf_jit_comp.c b/arch/arm64/net/bpf_jit_comp.c index 7ae304e0a078..b2fc97a2c56c 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);