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From: Wang Nan <wangnan0@huawei.com>
To: <acme@redhat.com>, <ast@fb.com>
Cc: <lizefan@huawei.com>, <hekuang@huawei.com>,
	<linux-kernel@vger.kernel.org>, <pi3orama@163.com>,
	Wang Nan <wangnan0@huawei.com>, Jiri Olsa <jolsa@kernel.org>
Subject: [PATCH 32/34] perf clang: Include helpers to BPF scripts
Date: Tue, 15 Nov 2016 04:06:15 +0000	[thread overview]
Message-ID: <20161115040617.69788-33-wangnan0@huawei.com> (raw)
In-Reply-To: <20161115040617.69788-1-wangnan0@huawei.com>

Automatically include some commonly 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>
Cc: Zefan Li <lizefan@huawei.com>
Cc: pi3orama@163.com
---
 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   |  4 +++-
 tools/perf/tests/bpf-script-test-relocation.c |  3 +--
 tools/perf/util/c++/Build                     |  1 +
 tools/perf/util/c++/bpf-helper-str.c          | 15 +++++++++++++++
 tools/perf/util/c++/clang-bpf-includes.h      |  1 +
 tools/perf/util/c++/clang.cpp                 |  1 +
 8 files changed, 25 insertions(+), 4 deletions(-)
 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 42dc341..e60bebf 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 BUILTIN_CLANG_DEFAULT_INCLUDE
 struct bpf_map_def {
 	unsigned int type;
 	unsigned int key_size;
@@ -18,7 +19,6 @@ struct bpf_map_def {
 
 #define SEC(NAME) __attribute__((section(NAME), used))
 
-#ifndef BUILTIN_CLANG_DEFAULT_INCLUDE
 #define BPF_FUNC_map_lookup_elem 1
 #define BPF_FUNC_map_update_elem 2
 
diff --git a/tools/perf/tests/bpf-script-test-kbuild.c b/tools/perf/tests/bpf-script-test-kbuild.c
index 3626924..f1b48a4 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 BUILTIN_CLANG_DEFAULT_INCLUDE
 #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 ada812b..e2176c9 100644
--- a/tools/perf/tests/bpf-script-test-prologue.c
+++ b/tools/perf/tests/bpf-script-test-prologue.c
@@ -6,7 +6,6 @@
 # error Need LINUX_VERSION_CODE
 # error Example: for 4.2 kernel, put 'clang-opt="-DLINUX_VERSION_CODE=0x40200" into llvm section of ~/.perfconfig'
 #endif
-#define SEC(NAME) __attribute__((section(NAME), used))
 
 #include <uapi/linux/fs.h>
 
@@ -14,6 +13,9 @@
 #define FMODE_WRITE		0x2
 
 #ifndef BUILTIN_CLANG_DEFAULT_INCLUDE
+
+#define SEC(NAME) __attribute__((section(NAME), used))
+
 static void (*bpf_trace_printk)(const char *fmt, int fmt_size, ...) =
 	(void *) 6;
 #endif
diff --git a/tools/perf/tests/bpf-script-test-relocation.c b/tools/perf/tests/bpf-script-test-relocation.c
index 57c96a3..bb54926 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 BUILTIN_CLANG_DEFAULT_INCLUDE
 struct bpf_map_def {
 	unsigned int type;
 	unsigned int key_size;
@@ -17,8 +18,6 @@ struct bpf_map_def {
 };
 
 #define SEC(NAME) __attribute__((section(NAME), used))
-
-#ifndef BUILTIN_CLANG_DEFAULT_INCLUDE
 #define BPF_FUNC_map_lookup_elem 1
 #define BPF_FUNC_map_update_elem 2
 
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..17f915c
--- /dev/null
+++ b/tools/perf/util/c++/bpf-helper-str.c
@@ -0,0 +1,15 @@
+#include "clang-bpf-includes.h"
+const char clang_builtin_bpf_helper_str[] =
+"#ifdef BUILTIN_CLANG_DEFAULT_INCLUDE\n"
+"#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\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 411a38c..db31fb2 100644
--- a/tools/perf/util/c++/clang.cpp
+++ b/tools/perf/util/c++/clang.cpp
@@ -48,6 +48,7 @@ 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;
-- 
2.10.1

  parent reply	other threads:[~2016-11-15  4:11 UTC|newest]

Thread overview: 42+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-11-15  4:05 [PATCH 00/34] perf clang: Builtin clang and perfhook support Wang Nan
2016-11-15  4:05 ` [PATCH 01/34] perf tools: Fix kernel version error in ubuntu Wang Nan
2016-11-25 17:20   ` [tip:perf/core] " tip-bot for Wang Nan
2016-11-15  4:05 ` [PATCH 02/34] perf record: Fix segfault when running with suid and kptr_restrict is 1 Wang Nan
2016-11-25 17:21   ` [tip:perf/core] " tip-bot for Wang Nan
2016-11-15  4:05 ` [PATCH 03/34] tools perf: Add missing struct defeinition in probe_event.h Wang Nan
2016-11-25 17:21   ` [tip:perf/core] perf tools: Add missing struct definition " tip-bot for Wang Nan
2016-11-15  4:05 ` [PATCH 04/34] tools lib bpf: fix maps resolution Wang Nan
2016-11-25 17:22   ` [tip:perf/core] tools lib bpf: Fix " tip-bot for Eric Leblond
2016-11-15  4:05 ` [PATCH 05/34] tools lib bpf: Add missing bpf map functions Wang Nan
2016-11-17  3:23   ` Wangnan (F)
2016-11-25 14:31     ` Arnaldo Carvalho de Melo
2016-11-15  4:05 ` [PATCH 06/34] tools lib bpf: Add private field for bpf_object Wang Nan
2016-11-15  4:05 ` [PATCH 07/34] tools lib bpf: Retrive bpf_map through offset of bpf_map_def Wang Nan
2016-11-15  4:05 ` [PATCH 08/34] perf tools: Introduce perf hooks Wang Nan
2016-11-15  4:05 ` [PATCH 09/34] perf tools: Pass context to perf hook functions Wang Nan
2016-11-15  4:05 ` [PATCH 10/34] perf llvm: Extract helpers in llvm-utils.c Wang Nan
2016-11-15  4:05 ` [PATCH 11/34] tools build: Add feature detection for LLVM Wang Nan
2016-11-15  4:05 ` [PATCH 12/34] tools build: Add feature detection for clang Wang Nan
2016-11-15  4:05 ` [PATCH 13/34] perf build: Add clang and llvm compile and linking support Wang Nan
2016-11-15  4:05 ` [PATCH 14/34] perf clang: Add builtin clang support ant test case Wang Nan
2016-11-15  4:05 ` [PATCH 15/34] perf clang: Use real file system for #include Wang Nan
2016-11-15  4:05 ` [PATCH 16/34] perf clang: Allow passing CFLAGS to builtin clang Wang Nan
2016-11-15  4:06 ` [PATCH 17/34] perf clang: Update test case to use real BPF script Wang Nan
2016-11-15  4:06 ` [PATCH 18/34] perf clang: Support compile IR to BPF object and add testcase Wang Nan
2016-11-15  4:06 ` [PATCH 19/34] perf clang: Compile BPF script use builtin clang support Wang Nan
2016-11-15  4:06 ` [PATCH 20/34] perf clang: Pass full path to builtin clang Wang Nan
2016-11-15  4:06 ` [PATCH 21/34] perf clang: Pass CFLAGS " Wang Nan
2016-11-15  4:06 ` [PATCH 22/34] perf clang jit: Wrap llvm::Module using PerfModule Wang Nan
2016-11-15  4:06 ` [PATCH 23/34] perf clang jit: Insignt BPF and JIT functions in a Module Wang Nan
2016-11-15  4:06 ` [PATCH 24/34] perf clang jit: add PerfModule::doJIT to JIT perfhook functions Wang Nan
2016-11-15  4:06 ` [PATCH 25/34] perf clang jit: Export functions for jitted code Wang Nan
2016-11-15  4:06 ` [PATCH 26/34] perf clang jit: Actually JIT and hook in bpf loader Wang Nan
2016-11-15  4:06 ` [PATCH 27/34] perf clang jit: Collect the lowest address in maps section as map_base Wang Nan
2016-11-15  4:06 ` [PATCH 28/34] perf clang jit: Access BPF map Wang Nan
2016-11-15  4:06 ` [PATCH 29/34] perf clang jit: Allow jitted perf hook access BPF maps Wang Nan
2016-11-15  4:06 ` [PATCH 30/34] perf clang: Link BPF functions declaration into perf Wang Nan
2016-11-15  4:06 ` [PATCH 31/34] perf clang: Declare BPF functions for BPF scripts automatically Wang Nan
2016-11-15  4:06 ` Wang Nan [this message]
2016-11-15  4:06 ` [PATCH 33/34] perf clang builtin: Define hook helpers by default Wang Nan
2016-11-15  4:06 ` [PATCH 34/34] perf clang git: Export getpid() to perf hook Wang Nan
2016-11-15  4:32 ` [PATCH 00/34] perf clang: Builtin clang and perfhook support Wangnan (F)

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