From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752564AbcFZLZt (ORCPT ); Sun, 26 Jun 2016 07:25:49 -0400 Received: from szxga04-in.huawei.com ([58.251.152.52]:21752 "EHLO szxga04-in.huawei.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1752438AbcFZLWJ (ORCPT ); Sun, 26 Jun 2016 07:22:09 -0400 From: He Kuang To: , , , , , , , , CC: Subject: [RFC PATCH v2 17/26] perf bpf: Add methods to set/check ubpf engine for bpf programs Date: Sun, 26 Jun 2016 11:21:09 +0000 Message-ID: <1466940078-65581-18-git-send-email-hekuang@huawei.com> X-Mailer: git-send-email 1.8.3.4 In-Reply-To: <1466940078-65581-1-git-send-email-hekuang@huawei.com> References: <1466940078-65581-1-git-send-email-hekuang@huawei.com> MIME-Version: 1.0 Content-Type: text/plain X-Originating-IP: [10.107.193.250] X-CFilter-Loop: Reflected X-Mirapoint-Virus-RAPID-Raw: score=unknown(0), refid=str=0001.0A090206.576FBAD4.0029,ss=1,re=0.000,recu=0.000,reip=0.000,cl=1,cld=1,fgs=0, ip=0.0.0.0, so=2014-11-16 11:51:01, dmn=2013-03-21 17:37:32 X-Mirapoint-Loop-Id: 064aa5b8686746f19f54e078c426cfa8 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Add methods to set ubpf engine for a bpf program and to check whether a program's engine is ubpf. Signed-off-by: He Kuang Signed-off-by: Wang Nan --- tools/lib/bpf/engine-ubpf.c | 12 ++++++++++++ tools/lib/bpf/libbpf.h | 17 +++++++++++++++++ 2 files changed, 29 insertions(+) diff --git a/tools/lib/bpf/engine-ubpf.c b/tools/lib/bpf/engine-ubpf.c index 0ab3310..9a0b425 100644 --- a/tools/lib/bpf/engine-ubpf.c +++ b/tools/lib/bpf/engine-ubpf.c @@ -95,3 +95,15 @@ struct bpf_engine uengine = { .unload = engine__unload, .get_nth = engine__get_nth, }; + +int bpf_program__set_ubpf(struct bpf_program *prog) +{ + prog->engine = &uengine; + + return 0; +} + +bool bpf_program__is_ubpf(struct bpf_program *prog) +{ + return prog->engine == &uengine; +} diff --git a/tools/lib/bpf/libbpf.h b/tools/lib/bpf/libbpf.h index b0e6c68..e01ab8e 100644 --- a/tools/lib/bpf/libbpf.h +++ b/tools/lib/bpf/libbpf.h @@ -27,6 +27,7 @@ enum libbpf_errno { LIBBPF_ERRNO__PROG2BIG, /* Program too big */ LIBBPF_ERRNO__KVER, /* Incorrect kernel version */ LIBBPF_ERRNO__LOADUBPF, /* Failed to load user space BPF program */ + LIBBPF_ERRNO__NOUBPF,/* UBPF support is not compiled */ __LIBBPF_ERRNO__END, }; @@ -192,4 +193,20 @@ struct ubpf_entry { struct bpf_insn *insns; }; +#ifdef HAVE_UBPF_SUPPORT +int bpf_program__set_ubpf(struct bpf_program *prog); +bool bpf_program__is_ubpf(struct bpf_program *prog); +#else +static inline int +bpf_program__set_ubpf(struct bpf_program *prog __maybe_unused) +{ + return -LIBBPF_ERRNO__NOUBPF; +} +static inline bool +bpf_program__is_ubpf(struct bpf_program *prog __maybe_unused) +{ + return false; +} +#endif + #endif -- 1.8.5.2