From 9bc898c7019383b6aa2ae6cb2928c4ca926449f0 Mon Sep 17 00:00:00 2001 From: Wang Nan Date: Wed, 8 Jul 2015 10:04:02 +0000 Subject: 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 Acked-by: Alexei Starovoitov Cc: Brendan Gregg Cc: Daniel Borkmann Cc: David Ahern Cc: He Kuang Cc: Jiri Olsa Cc: Kaixu Xia Cc: Masami Hiramatsu Cc: Namhyung Kim Cc: Peter Zijlstra Cc: Zefan Li 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 --- tools/perf/util/llvm-utils.h | 10 ++++++++++ 1 file changed, 10 insertions(+) (limited to 'tools/perf/util/llvm-utils.h') diff --git a/tools/perf/util/llvm-utils.h b/tools/perf/util/llvm-utils.h index d23adbca120b..5b3cf1c229e2 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 -- cgit v1.2.3