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author | Wang Nan <wangnan0@huawei.com> | 2015-11-06 13:49:42 +0000 |
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committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2015-11-06 17:49:50 -0300 |
commit | 7af3f3d55b80cce40ad94b6b8e173dccedaf25e6 (patch) | |
tree | 07c5b8794f085dd6e1dd230604de6d2f327753f7 /tools/perf/tests/bpf-script-test-kbuild.c | |
parent | b31de018a6284a25e0fdfeb028e724f8417ec3b1 (diff) | |
download | blackbird-op-linux-7af3f3d55b80cce40ad94b6b8e173dccedaf25e6.tar.gz blackbird-op-linux-7af3f3d55b80cce40ad94b6b8e173dccedaf25e6.zip |
perf test: Enhance the LLVM tests: add kbuild test
This patch adds a kbuild testcase to check whether kernel headers can be
correctly found.
For example:
# mv /lib/modules/4.3.0-rc5{,.bak}
# perf test LLVM
38: Test LLVM searching and compiling : Skip
# perf test -v LLVM
...
<stdin>:11:10: fatal error: 'uapi/linux/fs.h' file not found
#include <uapi/linux/fs.h>
^
1 error generated.
ERROR: unable to compile -
Hint: Check error message shown above.
Hint: You can also pre-compile it into .o using:
clang -target bpf -O2 -c -
with proper -I and -D options.
Failed to compile test case: 'Test kbuild searching'
test child finished with -2
Signed-off-by: Wang Nan <wangnan0@huawei.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Zefan Li <lizefan@huawei.com>
Cc: pi3orama@163.com
Link: http://lkml.kernel.org/r/1446817783-86722-7-git-send-email-wangnan0@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/tests/bpf-script-test-kbuild.c')
-rw-r--r-- | tools/perf/tests/bpf-script-test-kbuild.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/tools/perf/tests/bpf-script-test-kbuild.c b/tools/perf/tests/bpf-script-test-kbuild.c new file mode 100644 index 000000000000..3626924740d8 --- /dev/null +++ b/tools/perf/tests/bpf-script-test-kbuild.c @@ -0,0 +1,21 @@ +/* + * bpf-script-test-kbuild.c + * Test include from kernel header + */ +#ifndef LINUX_VERSION_CODE +# 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> +#include <uapi/asm/ptrace.h> + +SEC("func=vfs_llseek") +int bpf_func__vfs_llseek(void *ctx) +{ + return 0; +} + +char _license[] SEC("license") = "GPL"; +int _version SEC("version") = LINUX_VERSION_CODE; |