arm64: bpf: optimize JMP_CALL

Remove superfluous stack frame, saving us 3 instructions for
every JMP_CALL.

Signed-off-by: Zi Shen Lim <zlim.lnx@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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 51abc979d6cb..7ae304e0a078 100644
--- a/arch/arm64/net/bpf_jit_comp.c
+++ b/arch/arm64/net/bpf_jit_comp.c
@@ -578,11 +578,8 @@ emit_cond_jmp:
                 const u64 func = (u64)__bpf_call_base + imm;
 
                 emit_a64_mov_i64(tmp, func, ctx);
-                emit(A64_PUSH(A64_FP, A64_LR, A64_SP), ctx);
-                emit(A64_MOV(1, A64_FP, A64_SP), ctx);
                 emit(A64_BLR(tmp), ctx);
                 emit(A64_MOV(1, r0, A64_R(0)), ctx);
-                emit(A64_POP(A64_FP, A64_LR, A64_SP), ctx);
                 break;
         }
         /* tail call */