| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-ID: <20161126070354.141764-29-wangnan0@huawei.com>
Date: Sat, 26 Nov 2016 07:03:52 +0000
From: Wang Nan <wangnan0@...wei.com>
To: <acme@...hat.com>, <ast@...com>
CC: <lizefan@...wei.com>, <hekuang@...wei.com>,
<linux-kernel@...r.kernel.org>, <pi3orama@....com>, <joe@....org>,
Wang Nan <wangnan0@...wei.com>, Jiri Olsa <jolsa@...nel.org>
Subject: [PATCH v3 28/30] perf clang: Include helpers to BPF scripts
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@...wei.com>
Cc: Arnaldo Carvalho de Melo <acme@...hat.com>
Cc: Alexei Starovoitov <ast@...com>
Cc: He Kuang <hekuang@...wei.com>
Cc: Jiri Olsa <jolsa@...nel.org>
Cc: Zefan Li <lizefan@...wei.com>
Cc: pi3orama@....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 926dae1..5c1efe8 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
Powered by blists - more mailing lists