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authorWang Nan <wangnan0@huawei.com>2015-07-08 10:04:02 +0000
committerArnaldo Carvalho de Melo <acme@redhat.com>2015-08-07 10:57:24 -0300
commit9bc898c7019383b6aa2ae6cb2928c4ca926449f0 (patch)
tree0ba71f573541cf42609230d8d96bc5e4c295536c /tools/perf/util/llvm-utils.h
parent0c6d18bfd551622b438e216e4863155f47907b0d (diff)
downloadop-kernel-dev-9bc898c7019383b6aa2ae6cb2928c4ca926449f0.zip
op-kernel-dev-9bc898c7019383b6aa2ae6cb2928c4ca926449f0.tar.gz
perf tests: Add LLVM test for eBPF on-the-fly compiling
Previous patches introduce llvm__compile_bpf() to compile source file to eBPF object. This patch adds testcase to test it. It also tests libbpf by opening generated object after applying next patch which introduces HAVE_LIBBPF_SUPPORT option. Since llvm__compile_bpf() prints long messages which users who don't explicitly test llvm doesn't care, this patch set verbose to -1 to suppress all debug, warning and error message, and hint user use 'perf test -v' to see the full output. For the same reason, if clang is not found in PATH and there's no [llvm] section in .perfconfig, skip this test. Signed-off-by: Wang Nan <wangnan0@huawei.com> Acked-by: Alexei Starovoitov <ast@plumgrid.com> Cc: Brendan Gregg <brendan.d.gregg@gmail.com> Cc: Daniel Borkmann <daniel@iogearbox.net> Cc: David Ahern <dsahern@gmail.com> Cc: He Kuang <hekuang@huawei.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kaixu Xia <xiakaixu@huawei.com> Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Zefan Li <lizefan@huawei.com> Cc: pi3orama@163.com Link: http://lkml.kernel.org/n/1436445342-1402-17-git-send-email-wangnan0@huawei.com [ Add tools/lib/bpf/ to tools/perf/MANIFEST, so that the tarball targets build ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util/llvm-utils.h')
-rw-r--r--tools/perf/util/llvm-utils.h10
1 files changed, 10 insertions, 0 deletions
diff --git a/tools/perf/util/llvm-utils.h b/tools/perf/util/llvm-utils.h
index d23adbc..5b3cf1c 100644
--- a/tools/perf/util/llvm-utils.h
+++ b/tools/perf/util/llvm-utils.h
@@ -29,6 +29,13 @@ struct llvm_param {
* compiling. Should not be used for dynamic compiling.
*/
const char *kbuild_opts;
+ /*
+ * Default is false. If one of the above fields is set by user
+ * explicitly then user_set_llvm is set to true. This is used
+ * for perf test. If user doesn't set anything in .perfconfig
+ * and clang is not found, don't trigger llvm test.
+ */
+ bool user_set_param;
};
extern struct llvm_param llvm_param;
@@ -36,4 +43,7 @@ extern int perf_llvm_config(const char *var, const char *value);
extern int llvm__compile_bpf(const char *path, void **p_obj_buf,
size_t *p_obj_buf_sz);
+
+/* This function is for test__llvm() use only */
+extern int llvm__search_clang(void);
#endif
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