From: Wang Nan <wangnan0@huawei.com>
To: <acme@kernel.org>, <alexei.starovoitov@gmail.com>
Cc: <lizefan@huawei.com>, <linux-kernel@vger.kernel.org>,
<pi3orama@163.com>, Wang Nan <wangnan0@huawei.com>,
Arnaldo Carvalho de Melo <acme@redhat.com>,
Alexei Starovoitov <ast@fb.com>, He Kuang <hekuang@huawei.com>,
Jiri Olsa <jolsa@kernel.org>
Subject: [PATCH v2 17/18] perf clang: Include helpers to BPF scripts
Date: Mon, 26 Sep 2016 07:27:11 +0000 [thread overview]
Message-ID: <1474874832-134786-18-git-send-email-wangnan0@huawei.com> (raw)
In-Reply-To: <1474874832-134786-1-git-send-email-wangnan0@huawei.com>
Automatically include common used macros and struct definitions
into BPF scripts. Script writers are no longer required to define
'SEC' and 'struct bpf_map_def' in each of their scripts.
Signed-off-by: Wang Nan <wangnan0@huawei.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Alexei Starovoitov <ast@fb.com>
Cc: He Kuang <hekuang@huawei.com>
Cc: Jiri Olsa <jolsa@kernel.org>
---
tools/perf/tests/bpf-script-example.c | 2 ++
tools/perf/tests/bpf-script-test-kbuild.c | 2 ++
tools/perf/tests/bpf-script-test-prologue.c | 2 ++
tools/perf/tests/bpf-script-test-relocation.c | 2 ++
tools/perf/util/c++/Build | 1 +
tools/perf/util/c++/bpf-helper-str.c | 13 +++++++++++++
tools/perf/util/c++/clang-bpf-includes.h | 1 +
tools/perf/util/c++/clang.cpp | 1 +
8 files changed, 24 insertions(+)
create mode 100644 tools/perf/util/c++/bpf-helper-str.c
diff --git a/tools/perf/tests/bpf-script-example.c b/tools/perf/tests/bpf-script-example.c
index 5fb3e66..c82d67b 100644
--- a/tools/perf/tests/bpf-script-example.c
+++ b/tools/perf/tests/bpf-script-example.c
@@ -9,6 +9,7 @@
#define BPF_ANY 0
#define BPF_MAP_TYPE_ARRAY 2
+#ifndef BPF_HELPER_DEFINED
struct bpf_map_def {
unsigned int type;
unsigned int key_size;
@@ -17,6 +18,7 @@ struct bpf_map_def {
};
#define SEC(NAME) __attribute__((section(NAME), used))
+#endif
#ifndef BPF_FUNCS_DEFINED
#define BPF_FUNC_map_lookup_elem 1
diff --git a/tools/perf/tests/bpf-script-test-kbuild.c b/tools/perf/tests/bpf-script-test-kbuild.c
index 3626924..d01126b 100644
--- a/tools/perf/tests/bpf-script-test-kbuild.c
+++ b/tools/perf/tests/bpf-script-test-kbuild.c
@@ -6,7 +6,9 @@
# error Need LINUX_VERSION_CODE
# error Example: for 4.2 kernel, put 'clang-opt="-DLINUX_VERSION_CODE=0x40200" into llvm section of ~/.perfconfig'
#endif
+#ifndef BPF_HELPER_DEFINED
#define SEC(NAME) __attribute__((section(NAME), used))
+#endif
#include <uapi/linux/fs.h>
#include <uapi/asm/ptrace.h>
diff --git a/tools/perf/tests/bpf-script-test-prologue.c b/tools/perf/tests/bpf-script-test-prologue.c
index e8dba36..e7ecbf1 100644
--- a/tools/perf/tests/bpf-script-test-prologue.c
+++ b/tools/perf/tests/bpf-script-test-prologue.c
@@ -6,7 +6,9 @@
# error Need LINUX_VERSION_CODE
# error Example: for 4.2 kernel, put 'clang-opt="-DLINUX_VERSION_CODE=0x40200" into llvm section of ~/.perfconfig'
#endif
+#ifndef BPF_HELPER_DEFINED
#define SEC(NAME) __attribute__((section(NAME), used))
+#endif
#include <uapi/linux/fs.h>
diff --git a/tools/perf/tests/bpf-script-test-relocation.c b/tools/perf/tests/bpf-script-test-relocation.c
index a9638eb7..dfccdf6 100644
--- a/tools/perf/tests/bpf-script-test-relocation.c
+++ b/tools/perf/tests/bpf-script-test-relocation.c
@@ -9,6 +9,7 @@
#define BPF_ANY 0
#define BPF_MAP_TYPE_ARRAY 2
+#ifndef BPF_HELPER_DEFINED
struct bpf_map_def {
unsigned int type;
unsigned int key_size;
@@ -17,6 +18,7 @@ struct bpf_map_def {
};
#define SEC(NAME) __attribute__((section(NAME), used))
+#endif
#ifndef BPF_FUNCS_DEFINED
#define BPF_FUNC_map_lookup_elem 1
diff --git a/tools/perf/util/c++/Build b/tools/perf/util/c++/Build
index bd71abf..faa0268 100644
--- a/tools/perf/util/c++/Build
+++ b/tools/perf/util/c++/Build
@@ -1,3 +1,4 @@
libperf-$(CONFIG_CLANGLLVM) += clang.o
libperf-$(CONFIG_CLANGLLVM) += clang-test.o
libperf-$(CONFIG_CLANGLLVM) += bpf-funcs-str.o
+libperf-$(CONFIG_CLANGLLVM) += bpf-helper-str.o
diff --git a/tools/perf/util/c++/bpf-helper-str.c b/tools/perf/util/c++/bpf-helper-str.c
new file mode 100644
index 0000000..285ff01
--- /dev/null
+++ b/tools/perf/util/c++/bpf-helper-str.c
@@ -0,0 +1,13 @@
+#include "clang-bpf-includes.h"
+const char clang_builtin_bpf_helper_str[] =
+"#ifndef BPF_HELPER_DEFINED\n"
+"#define BPF_HELPER_DEFINED\n"
+"struct bpf_map_def {\n"
+" unsigned int type;\n"
+" unsigned int key_size;\n"
+" unsigned int value_size;\n"
+" unsigned int max_entries;\n"
+"};\n"
+"#define SEC(NAME) __attribute__((section(NAME), used))\n"
+"#endif"
+;
diff --git a/tools/perf/util/c++/clang-bpf-includes.h b/tools/perf/util/c++/clang-bpf-includes.h
index 385a5bb..577b40c 100644
--- a/tools/perf/util/c++/clang-bpf-includes.h
+++ b/tools/perf/util/c++/clang-bpf-includes.h
@@ -5,6 +5,7 @@ extern "C" {
#endif
extern const char clang_builtin_bpf_funcs_str[];
+extern const char clang_builtin_bpf_helper_str[];
#ifdef __cplusplus
}
diff --git a/tools/perf/util/c++/clang.cpp b/tools/perf/util/c++/clang.cpp
index 1016d5d..a2de788 100644
--- a/tools/perf/util/c++/clang.cpp
+++ b/tools/perf/util/c++/clang.cpp
@@ -38,6 +38,7 @@ static struct BPFHeader {
llvm::StringRef Content;
} BPFHeaders[] = {
{"/virtual/bpf-funcs.h", clang_builtin_bpf_funcs_str},
+ {"/virtual/bpf-helper.h", clang_builtin_bpf_helper_str},
};
static std::unique_ptr<llvm::LLVMContext> LLVMCtx;
--
1.8.3.4
next prev parent reply other threads:[~2016-09-26 7:29 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-09-26 7:26 [PATCH v2 00/18] perf clang: Support compiling BPF script on the fly Wang Nan
2016-09-26 7:26 ` [PATCH v2 01/18] tools build: Support compiling C++ source file Wang Nan
2016-10-06 22:44 ` [tip:perf/urgent] " tip-bot for Wang Nan
2016-09-26 7:26 ` [PATCH v2 02/18] perf tools: Add feature detection for g++ Wang Nan
2016-10-06 22:45 ` [tip:perf/urgent] tools build: " tip-bot for Wang Nan
2016-09-26 7:26 ` [PATCH v2 03/18] perf tools: Add feature detection for LLVM Wang Nan
2016-09-26 7:26 ` [PATCH v2 04/18] perf tools: Add feature detection for clang Wang Nan
2016-09-26 7:26 ` [PATCH v2 05/18] perf build: Add clang and llvm compile and linking support Wang Nan
2016-09-26 7:27 ` [PATCH v2 06/18] perf clang: Add builtin clang support ant test case Wang Nan
2016-09-26 7:27 ` [PATCH v2 07/18] perf clang: Use real file system for #include Wang Nan
2016-09-26 7:27 ` [PATCH v2 08/18] perf clang: Allow passing CFLAGS to builtin clang Wang Nan
2016-09-26 7:27 ` [PATCH v2 09/18] perf clang: Update test case to use real BPF script Wang Nan
2016-09-26 7:27 ` [PATCH v2 10/18] perf clang: Support compile IR to BPF object and add testcase Wang Nan
2016-09-26 7:27 ` [PATCH v2 11/18] perf tools: Extract helpers in llvm-utils.c Wang Nan
2016-09-26 7:27 ` [PATCH v2 12/18] perf bpf: Compile BPF script use builtin clang support Wang Nan
2016-09-26 7:27 ` [PATCH v2 13/18] perf clang: Pass full path to builtin clang Wang Nan
2016-09-26 7:27 ` [PATCH v2 14/18] perf clang: Pass CFLAGS " Wang Nan
2016-09-26 7:27 ` [PATCH v2 15/18] perf clang: Link BPF functions declaration into perf Wang Nan
2016-09-26 7:27 ` [PATCH v2 16/18] perf clang: Declare BPF functions for BPF scripts automatically Wang Nan
2016-09-26 7:27 ` Wang Nan [this message]
2016-09-26 7:27 ` [PATCH v2 18/18] perf clang: Define PERF_BUILTIN_CLANG for builtin clang compiling Wang Nan
2016-10-05 23:20 ` [PATCH v2 00/18] perf clang: Support compiling BPF script on the fly Arnaldo Carvalho de Melo
2016-10-08 2:03 ` Wangnan (F)
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