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 v7 01/37] tools build: Add feature check for eBPF API
Date: Fri, 12 Jun 2015 05:35:09 +0000 [thread overview]
Message-ID: <1434087345-127225-2-git-send-email-wangnan0@huawei.com> (raw)
In-Reply-To: <1434087345-127225-1-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
next prev parent reply other threads:[~2015-06-12 5:37 UTC|newest]
Thread overview: 48+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-06-12 5:35 [RFC PATCH v7 00/37] perf tools: filtering events using eBPF programs Wang Nan
2015-06-12 5:35 ` Wang Nan [this message]
2015-06-12 5:35 ` [RFC PATCH v7 02/37] bpf tools: Introduce 'bpf' library to tools Wang Nan
2015-06-12 5:35 ` [RFC PATCH v7 03/37] bpf tools: Allow caller to set printing function Wang Nan
2015-06-12 5:35 ` [RFC PATCH v7 04/37] bpf tools: Open eBPF object file and do basic validation Wang Nan
2015-06-12 5:35 ` [RFC PATCH v7 05/37] bpf tools: Read eBPF object from buffer Wang Nan
2015-06-12 5:35 ` [RFC PATCH v7 06/37] bpf tools: Check endianess and make libbpf fail early Wang Nan
2015-06-12 5:35 ` [RFC PATCH v7 07/37] bpf tools: Iterate over ELF sections to collect information Wang Nan
2015-06-12 5:35 ` [RFC PATCH v7 08/37] bpf tools: Collect version and license from ELF sections Wang Nan
2015-06-12 5:35 ` [RFC PATCH v7 09/37] bpf tools: Collect map definitions from 'maps' section Wang Nan
2015-06-12 5:35 ` [RFC PATCH v7 10/37] bpf tools: Collect symbol table from SHT_SYMTAB section Wang Nan
2015-06-12 5:35 ` [RFC PATCH v7 11/37] bpf tools: Collect eBPF programs from their own sections Wang Nan
2015-06-12 5:35 ` [RFC PATCH v7 12/37] bpf tools: Collect relocation sections from SHT_REL sections Wang Nan
2015-06-12 5:35 ` [RFC PATCH v7 13/37] bpf tools: Record map accessing instructions for each program Wang Nan
2015-06-12 5:35 ` [RFC PATCH v7 14/37] bpf tools: Add bpf.c/h for common bpf operations Wang Nan
2015-06-12 5:35 ` [RFC PATCH v7 15/37] bpf tools: Create eBPF maps defined in an object file Wang Nan
2015-06-12 5:35 ` [RFC PATCH v7 16/37] bpf tools: Relocate eBPF programs Wang Nan
2015-06-12 5:35 ` [RFC PATCH v7 17/37] bpf tools: Introduce bpf_load_program() to bpf.c Wang Nan
2015-06-12 5:35 ` [RFC PATCH v7 18/37] bpf tools: Load eBPF programs in object files into kernel Wang Nan
2015-06-12 5:35 ` [RFC PATCH v7 19/37] bpf tools: Introduce accessors for struct bpf_program Wang Nan
2015-06-12 5:35 ` [RFC PATCH v7 20/37] bpf tools: Introduce accessors for struct bpf_object Wang Nan
2015-06-12 5:35 ` [RFC PATCH v7 21/37] bpf tools: Link all bpf objects onto a list Wang Nan
2015-06-12 5:35 ` [RFC PATCH v7 22/37] perf tools: Make perf depend on libbpf Wang Nan
2015-06-12 5:35 ` [RFC PATCH v7 23/37] perf tools: Introduce llvm config options Wang Nan
2015-06-13 2:31 ` Alexei Starovoitov
2015-06-13 2:52 ` pi3orama
2015-06-13 3:03 ` Alexei Starovoitov
2015-06-13 3:31 ` pi3orama
2015-06-13 4:11 ` pi3orama
2015-06-13 4:43 ` Alexei Starovoitov
2015-06-12 5:35 ` [RFC PATCH v7 24/37] perf tools: Call clang to compile C source to object code Wang Nan
2015-06-12 5:35 ` [RFC PATCH v7 25/37] perf tests: Add LLVM test for eBPF on-the-fly compiling Wang Nan
2015-06-12 5:35 ` [RFC PATCH v7 26/37] perf tools: Auto detecting kernel build directory Wang Nan
2015-06-12 5:35 ` [RFC PATCH v7 27/37] perf tools: Auto detecting kernel include options Wang Nan
2015-06-12 5:35 ` [RFC PATCH v7 28/37] perf record: Enable passing bpf object file to --event Wang Nan
2015-06-12 5:35 ` [RFC PATCH v7 29/37] perf record: Compile scriptlets if pass '.c' " Wang Nan
2015-06-12 5:35 ` [RFC PATCH v7 30/37] perf tools: Parse probe points of eBPF programs during preparation Wang Nan
2015-06-12 5:35 ` [RFC PATCH v7 31/37] perf probe: Attach trace_probe_event with perf_probe_event Wang Nan
2015-06-12 5:35 ` [RFC PATCH v7 32/37] perf record: Probe at kprobe points Wang Nan
2015-06-12 5:35 ` [RFC PATCH v7 33/37] perf record: Load all eBPF object into kernel Wang Nan
2015-06-12 5:35 ` [RFC PATCH v7 34/37] perf tools: Add bpf_fd field to evsel and config it Wang Nan
2015-06-12 5:35 ` [RFC PATCH v7 35/37] perf tools: Attach eBPF program to perf event Wang Nan
2015-06-12 5:35 ` [RFC PATCH v7 36/37] perf tools: Suppress probing messages when probing by BPF loading Wang Nan
2015-06-12 5:35 ` [RFC PATCH v7 37/37] perf record: Add clang options for compiling BPF scripts Wang Nan
2015-06-12 6:08 ` Wangnan (F)
2015-06-12 6:29 ` [RFC PATCH v7 37/37 -fix] " Wang Nan
2015-06-12 16:58 ` [RFC PATCH v7 00/37] perf tools: filtering events using eBPF programs Alexei Starovoitov
2015-06-16 5:22 ` Wangnan (F)
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