gen_ldx_reg_from_ctx 188 tools/perf/util/bpf-prologue.c err = gen_ldx_reg_from_ctx(pos, BPF_REG_1, args[i].value, gen_ldx_reg_from_ctx 256 tools/perf/util/bpf-prologue.c err = gen_ldx_reg_from_ctx(pos, BPF_REG_CTX, reg,