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authorZi Shen Lim <zlim.lnx@gmail.com>2016-06-09 07:18:50 +0300
committerDavid S. Miller <davem@davemloft.net>2016-06-11 09:11:50 +0300
commit643c332d519bdfbf80d21f40d1c0aa0ccf3ec1cb (patch)
treec8fe63136f80a4557e5bbb10b3ac2d18881e04c0 /arch/arm64/net
parent997ce888324685a90fb5d0fa26293eb8826c767c (diff)
downloadlinux-643c332d519bdfbf80d21f40d1c0aa0ccf3ec1cb.tar.xz
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@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/arm64/net')
-rw-r--r--arch/arm64/net/bpf_jit_comp.c3
1 files changed, 0 insertions, 3 deletions
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);