From: Wang Nan <wangnan0@huawei.com>
To: <namhyung@kernel.org>, <alexei.starovoitov@gmail.com>,
<masami.hiramatsu.pt@hitachi.com>, <acme@kernel.org>,
<paulus@samba.org>, <a.p.zijlstra@chello.nl>, <mingo@redhat.com>,
<jolsa@kernel.org>, <dsahern@gmail.com>, <daniel@iogearbox.net>,
<brendan.d.gregg@gmail.com>
Cc: <lizefan@huawei.com>, <hekuang@huawei.com>, <xiakaixu@huawei.com>,
<linux-kernel@vger.kernel.org>, <pi3orama@163.com>
Subject: [RFC PATCH v5 03/30] tools build: Add feature check for eBPF API
Date: Mon, 1 Jun 2015 07:37:49 +0000 [thread overview]
Message-ID: <1433144296-74992-4-git-send-email-wangnan0@huawei.com> (raw)
In-Reply-To: <1433144296-74992-1-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>
---
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
next prev parent reply other threads:[~2015-06-01 9:57 UTC|newest]
Thread overview: 43+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-06-01 7:37 [RFC PATCH v5 00/30] perf tools: filtering events using eBPF programs Wang Nan
2015-06-01 7:37 ` [RFC PATCH v5 01/30] perf tools: Move linux/kernel.h to tools/include Wang Nan
2015-06-04 14:11 ` [tip:perf/core] " tip-bot for Wang Nan
2015-06-01 7:37 ` [RFC PATCH v5 02/30] perf tools: Move linux/{list.h,poison.h} " Wang Nan
2015-06-04 14:11 ` [tip:perf/core] tools: Move tools/perf/util/include/linux/{list.h ,poison.h} " tip-bot for Wang Nan
2015-06-01 7:37 ` Wang Nan [this message]
2015-06-02 22:11 ` [RFC PATCH v5 03/30] tools build: Add feature check for eBPF API Arnaldo Carvalho de Melo
2015-06-03 1:15 ` Wangnan (F)
2015-06-03 13:47 ` Arnaldo Carvalho de Melo
2015-06-01 7:37 ` [RFC PATCH v5 04/30] bpf tools: Introduce 'bpf' library to tools Wang Nan
2015-06-01 7:37 ` [RFC PATCH v5 05/30] bpf tools: Allow caller to set printing function Wang Nan
2015-06-01 7:37 ` [RFC PATCH v5 06/30] bpf tools: Open eBPF object file and do basic validation Wang Nan
2015-06-03 21:33 ` Arnaldo Carvalho de Melo
2015-06-03 21:35 ` Arnaldo Carvalho de Melo
2015-06-04 2:18 ` Wangnan (F)
2015-06-01 7:37 ` [RFC PATCH v5 07/30] bpf tools: Check endianess and make libbpf fail early Wang Nan
2015-06-03 21:52 ` Arnaldo Carvalho de Melo
2015-06-01 7:37 ` [RFC PATCH v5 08/30] bpf tools: Iterate over ELF sections to collect information Wang Nan
2015-06-01 7:37 ` [RFC PATCH v5 09/30] bpf tools: Collect version and license from ELF sections Wang Nan
2015-06-01 7:37 ` [RFC PATCH v5 10/30] bpf tools: Collect map definitions from 'maps' section Wang Nan
2015-06-01 7:37 ` [RFC PATCH v5 11/30] bpf tools: Collect symbol table from SHT_SYMTAB section Wang Nan
2015-06-01 7:37 ` [RFC PATCH v5 12/30] bpf tools: Collect eBPF programs from their own sections Wang Nan
2015-06-01 7:37 ` [RFC PATCH v5 13/30] bpf tools: Collect relocation sections from SHT_REL sections Wang Nan
2015-06-01 7:38 ` [RFC PATCH v5 14/30] bpf tools: Record map accessing instructions for each program Wang Nan
2015-06-01 7:38 ` [RFC PATCH v5 15/30] bpf tools: Add bpf.c/h for common bpf operations Wang Nan
2015-06-01 7:38 ` [RFC PATCH v5 16/30] bpf tools: Create eBPF maps defined in an object file Wang Nan
2015-06-01 7:38 ` [RFC PATCH v5 17/30] bpf tools: Relocate eBPF programs Wang Nan
2015-06-01 7:38 ` [RFC PATCH v5 18/30] bpf tools: Introduce bpf_load_program() to bpf.c Wang Nan
2015-06-01 7:38 ` [RFC PATCH v5 19/30] bpf tools: Load eBPF programs in object files into kernel Wang Nan
2015-06-01 7:38 ` [RFC PATCH v5 20/30] bpf tools: Introduce accessors for struct bpf_program Wang Nan
2015-06-01 7:38 ` [RFC PATCH v5 21/30] bpf tools: Introduce accessors for struct bpf_object Wang Nan
2015-06-01 7:38 ` [RFC PATCH v5 22/30] bpf tools: Link all bpf objects onto a list Wang Nan
2015-06-01 7:38 ` [RFC PATCH v5 23/30] perf tools: Make perf depend on libbpf Wang Nan
2015-06-03 2:45 ` [RFC PATCH v6 " Wang Nan
2015-06-01 7:38 ` [RFC PATCH v5 24/30] perf record: Enable passing bpf object file to --event Wang Nan
2015-06-01 7:38 ` [RFC PATCH v5 25/30] perf tools: Parse probe points of eBPF programs during preparation Wang Nan
2015-06-01 7:38 ` [RFC PATCH v5 26/30] perf probe: Attach trace_probe_event with perf_probe_event Wang Nan
2015-06-01 7:38 ` [RFC PATCH v5 27/30] perf record: Probe at kprobe points Wang Nan
2015-06-01 7:38 ` [RFC PATCH v5 28/30] perf record: Load all eBPF object into kernel Wang Nan
2015-06-01 7:38 ` [RFC PATCH v5 29/30] perf tools: Add bpf_fd field to evsel and config it Wang Nan
2015-06-01 7:38 ` [RFC PATCH v5 30/30] perf tools: Attach eBPF program to perf event Wang Nan
2015-06-02 0:48 ` [RFC PATCH v5 00/30] perf tools: filtering events using eBPF programs Alexei Starovoitov
2015-06-02 1:15 ` Arnaldo Carvalho de Melo
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