All of lore.kernel.org
 help / color / mirror / Atom feed
From: Wang Nan <wangnan0@huawei.com>
To: <acme@kernel.org>, <ast@plumgrid.com>,
	<brendan.d.gregg@gmail.com>, <daniel@iogearbox.net>,
	<namhyung@kernel.org>, <masami.hiramatsu.pt@hitachi.com>,
	<paulus@samba.org>, <a.p.zijlstra@chello.nl>, <mingo@redhat.com>,
	<jolsa@kernel.org>, <dsahern@gmail.com>
Cc: <linux-kernel@vger.kernel.org>, <lizefan@huawei.com>,
	<hekuang@huawei.com>, <xiakaixu@huawei.com>, <pi3orama@163.com>
Subject: [RFC PATCH v6 01/32] tools build: Add feature check for eBPF API
Date: Tue, 9 Jun 2015 05:50:05 +0000	[thread overview]
Message-ID: <1433829036-23687-2-git-send-email-wangnan0@huawei.com> (raw)
In-Reply-To: <1433829036-23687-1-git-send-email-wangnan0@huawei.com>

In this patch, eBPF API is checked by compiling a c source file which
uses fields in bpf_attr which will be used by libbpf.

Signed-off-by: Wang Nan <wangnan0@huawei.com>
Acked-by: Alexei Starovoitov <ast@plumgrid.com>
---
 tools/build/Makefile.feature   |  6 ++++--
 tools/build/feature/Makefile   |  6 +++++-
 tools/build/feature/test-bpf.c | 18 ++++++++++++++++++
 3 files changed, 27 insertions(+), 3 deletions(-)
 create mode 100644 tools/build/feature/test-bpf.c

diff --git a/tools/build/Makefile.feature b/tools/build/Makefile.feature
index 2975632..5ec6b37 100644
--- a/tools/build/Makefile.feature
+++ b/tools/build/Makefile.feature
@@ -51,7 +51,8 @@ FEATURE_TESTS ?=			\
 	timerfd				\
 	libdw-dwarf-unwind		\
 	zlib				\
-	lzma
+	lzma				\
+	bpf
 
 FEATURE_DISPLAY ?=			\
 	dwarf				\
@@ -67,7 +68,8 @@ FEATURE_DISPLAY ?=			\
 	libunwind			\
 	libdw-dwarf-unwind		\
 	zlib				\
-	lzma
+	lzma				\
+	bpf
 
 # Set FEATURE_CHECK_(C|LD)FLAGS-all for all FEATURE_TESTS features.
 # If in the future we need per-feature checks/flags for features not
diff --git a/tools/build/feature/Makefile b/tools/build/feature/Makefile
index 463ed8f..1c0d69f 100644
--- a/tools/build/feature/Makefile
+++ b/tools/build/feature/Makefile
@@ -33,7 +33,8 @@ FILES=					\
 	test-compile-32.bin		\
 	test-compile-x32.bin		\
 	test-zlib.bin			\
-	test-lzma.bin
+	test-lzma.bin			\
+	test-bpf.bin
 
 CC := $(CROSS_COMPILE)gcc -MD
 PKG_CONFIG := $(CROSS_COMPILE)pkg-config
@@ -156,6 +157,9 @@ test-zlib.bin:
 test-lzma.bin:
 	$(BUILD) -llzma
 
+test-bpf.bin:
+	$(BUILD)
+
 -include *.d
 
 ###############################
diff --git a/tools/build/feature/test-bpf.c b/tools/build/feature/test-bpf.c
new file mode 100644
index 0000000..a96160b
--- /dev/null
+++ b/tools/build/feature/test-bpf.c
@@ -0,0 +1,18 @@
+#include <linux/bpf.h>
+
+int main()
+{
+	union bpf_attr attr;
+
+	attr.prog_type = BPF_PROG_TYPE_KPROBE;
+	attr.insn_cnt = 0;
+	attr.insns = 0;
+	attr.license = 0;
+	attr.log_buf = 0;
+	attr.log_size = 0;
+	attr.log_level = 0;
+	attr.kern_version = 0;
+
+	attr = attr;
+	return 0;
+}
-- 
1.8.3.4


  reply	other threads:[~2015-06-09  5:51 UTC|newest]

Thread overview: 58+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-06-09  5:50 [RFC PATCH v6 00/32] perf tools: filtering events using eBPF programs Wang Nan
2015-06-09  5:50 ` Wang Nan [this message]
2015-06-09  5:50 ` [RFC PATCH v6 02/32] bpf tools: Introduce 'bpf' library to tools Wang Nan
2015-06-09  5:50 ` [RFC PATCH v6 03/32] bpf tools: Allow caller to set printing function Wang Nan
2015-06-09  5:50 ` [RFC PATCH v6 04/32] bpf tools: Open eBPF object file and do basic validation Wang Nan
2015-06-09  5:50 ` [RFC PATCH v6 05/32] bpf tools: Read eBPF object from buffer Wang Nan
2015-06-09  5:50 ` [RFC PATCH v6 06/32] bpf tools: Check endianess and make libbpf fail early Wang Nan
2015-06-09  5:50 ` [RFC PATCH v6 07/32] bpf tools: Iterate over ELF sections to collect information Wang Nan
2015-06-09  5:50 ` [RFC PATCH v6 08/32] bpf tools: Collect version and license from ELF sections Wang Nan
2015-06-09  5:50 ` [RFC PATCH v6 09/32] bpf tools: Collect map definitions from 'maps' section Wang Nan
2015-06-09  5:50 ` [RFC PATCH v6 10/32] bpf tools: Collect symbol table from SHT_SYMTAB section Wang Nan
2015-06-09  5:50 ` [RFC PATCH v6 11/32] bpf tools: Collect eBPF programs from their own sections Wang Nan
2015-06-09  5:50 ` [RFC PATCH v6 12/32] bpf tools: Collect relocation sections from SHT_REL sections Wang Nan
2015-06-09  5:50 ` [RFC PATCH v6 13/32] bpf tools: Record map accessing instructions for each program Wang Nan
2015-06-09  5:50 ` [RFC PATCH v6 14/32] bpf tools: Add bpf.c/h for common bpf operations Wang Nan
2015-06-09  5:50 ` [RFC PATCH v6 15/32] bpf tools: Create eBPF maps defined in an object file Wang Nan
2015-06-09  5:50 ` [RFC PATCH v6 16/32] bpf tools: Relocate eBPF programs Wang Nan
2015-06-09  5:50 ` [RFC PATCH v6 17/32] bpf tools: Introduce bpf_load_program() to bpf.c Wang Nan
2015-06-09  5:50 ` [RFC PATCH v6 18/32] bpf tools: Load eBPF programs in object files into kernel Wang Nan
2015-06-09  5:50 ` [RFC PATCH v6 19/32] bpf tools: Introduce accessors for struct bpf_program Wang Nan
2015-06-09  5:50 ` [RFC PATCH v6 20/32] bpf tools: Introduce accessors for struct bpf_object Wang Nan
2015-06-09  5:50 ` [RFC PATCH v6 21/32] bpf tools: Link all bpf objects onto a list Wang Nan
2015-06-09  5:50 ` [RFC PATCH v6 22/32] perf tools: Make perf depend on libbpf Wang Nan
2015-06-09 10:29   ` Wangnan (F)
2015-06-09  5:50 ` [RFC PATCH v6 23/32] perf record: Enable passing bpf object file to --event Wang Nan
2015-06-09  5:50 ` [RFC PATCH v6 24/32] perf record: Compile scriptlets if pass '.c' " Wang Nan
2015-06-09 21:48   ` Alexei Starovoitov
2015-06-10  0:06     ` Wangnan (F)
2015-06-10  0:28       ` Alexei Starovoitov
2015-06-11  7:19       ` Namhyung Kim
2015-06-11  7:35         ` Wangnan (F)
2015-06-11 17:42           ` Alexei Starovoitov
2015-06-09  5:50 ` [RFC PATCH v6 25/32] perf tools: Add 'bpf.' config section to perf default config Wang Nan
2015-06-09 23:43   ` Alexei Starovoitov
2015-06-10  0:47     ` Wangnan (F)
2015-06-10  1:09       ` Alexei Starovoitov
2015-06-10  2:23         ` Wangnan (F)
2015-06-10  3:55           ` Alexei Starovoitov
2015-06-11  7:45     ` Namhyung Kim
2015-06-11  8:09       ` Wangnan (F)
2015-06-11 14:50         ` Namhyung Kim
2015-06-09  5:50 ` [RFC PATCH v6 26/32] perf tools: Parse probe points of eBPF programs during preparation Wang Nan
2015-06-09  5:50 ` [RFC PATCH v6 27/32] perf probe: Attach trace_probe_event with perf_probe_event Wang Nan
2015-06-09  5:50 ` [RFC PATCH v6 28/32] perf record: Probe at kprobe points Wang Nan
2015-06-11 14:32   ` Namhyung Kim
2015-06-09  5:50 ` [RFC PATCH v6 29/32] perf record: Load all eBPF object into kernel Wang Nan
2015-06-09  5:50 ` [RFC PATCH v6 30/32] perf tools: Add bpf_fd field to evsel and config it Wang Nan
2015-06-09  5:50 ` [RFC PATCH v6 31/32] perf tools: Attach eBPF program to perf event Wang Nan
2015-06-09  5:50 ` [RFC PATCH v6 32/32] perf record: Add LLVM options for compiling BPF scripts Wang Nan
2015-06-09 13:32   ` Wangnan (F)
2015-06-10  0:02   ` Alexei Starovoitov
2015-06-10  0:17     ` Wangnan (F)
2015-06-10  1:34       ` Alexei Starovoitov
2015-06-09 13:59 ` [RFC PATCH v6 00/32] perf tools: filtering events using eBPF programs Arnaldo Carvalho de Melo
2015-06-09 23:45   ` Wangnan (F)
2015-06-09 21:30 ` Alexei Starovoitov
2015-06-09 21:44   ` Arnaldo Carvalho de Melo
2015-06-09 23:16     ` Alexei Starovoitov

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=1433829036-23687-2-git-send-email-wangnan0@huawei.com \
    --to=wangnan0@huawei.com \
    --cc=a.p.zijlstra@chello.nl \
    --cc=acme@kernel.org \
    --cc=ast@plumgrid.com \
    --cc=brendan.d.gregg@gmail.com \
    --cc=daniel@iogearbox.net \
    --cc=dsahern@gmail.com \
    --cc=hekuang@huawei.com \
    --cc=jolsa@kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=lizefan@huawei.com \
    --cc=masami.hiramatsu.pt@hitachi.com \
    --cc=mingo@redhat.com \
    --cc=namhyung@kernel.org \
    --cc=paulus@samba.org \
    --cc=pi3orama@163.com \
    --cc=xiakaixu@huawei.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.