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>
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@ -578,11 +578,8 @@ emit_cond_jmp:
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const u64 func = (u64)__bpf_call_base + imm;
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emit_a64_mov_i64(tmp, func, ctx);
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emit(A64_PUSH(A64_FP, A64_LR, A64_SP), ctx);
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emit(A64_MOV(1, A64_FP, A64_SP), ctx);
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emit(A64_BLR(tmp), ctx);
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emit(A64_MOV(1, r0, A64_R(0)), ctx);
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emit(A64_POP(A64_FP, A64_LR, A64_SP), ctx);
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break;
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}
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/* tail call */
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