Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S965343AbbKDLVP (ORCPT ); Wed, 4 Nov 2015 06:21:15 -0500 Received: from szxga02-in.huawei.com ([119.145.14.65]:59720 "EHLO szxga02-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932625AbbKDLUl (ORCPT ); Wed, 4 Nov 2015 06:20:41 -0500 From: Wang Nan To: , CC: , , , Wang Nan , Arnaldo Carvalho de Melo Subject: [PATCH 4/4] perf test: Enforce LLVM test: add kbuild test Date: Wed, 4 Nov 2015 11:20:07 +0000 Message-ID: <1446636007-239722-5-git-send-email-wangnan0@huawei.com> X-Mailer: git-send-email 1.8.3.4 In-Reply-To: <1446636007-239722-1-git-send-email-wangnan0@huawei.com> References: <1446636007-239722-1-git-send-email-wangnan0@huawei.com> MIME-Version: 1.0 Content-Type: text/plain X-Originating-IP: [10.107.193.248] X-CFilter-Loop: Reflected X-Mirapoint-Virus-RAPID-Raw: score=unknown(0), refid=str=0001.0A020204.5639EA01.0127,ss=1,re=0.000,fgs=0, ip=0.0.0.0, so=2013-06-18 04:22:30, dmn=2011-05-27 18:58:46 X-Mirapoint-Loop-Id: 9d58d9018c1afa2f916f7f5e5020b82d Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 3973 Lines: 128 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 ... :11:10: fatal error: 'uapi/linux/fs.h' file not found #include ^ 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 Cc: Arnaldo Carvalho de Melo Cc: Zefan Li Cc: pi3orama@163.com --- tools/perf/tests/Build | 9 ++++++++- tools/perf/tests/bpf-script-test-kbuild.c | 21 +++++++++++++++++++++ tools/perf/tests/llvm.c | 4 ++++ tools/perf/tests/llvm.h | 2 ++ 4 files changed, 35 insertions(+), 1 deletion(-) create mode 100644 tools/perf/tests/bpf-script-test-kbuild.c diff --git a/tools/perf/tests/Build b/tools/perf/tests/Build index 6c095b3..a47b211 100644 --- a/tools/perf/tests/Build +++ b/tools/perf/tests/Build @@ -31,7 +31,7 @@ perf-y += sample-parsing.o perf-y += parse-no-sample-id-all.o perf-y += kmod-path.o perf-y += thread-map.o -perf-y += llvm.o llvm-src-base.o +perf-y += llvm.o llvm-src-base.o llvm-src-kbuild.o perf-y += topology.o $(OUTPUT)tests/llvm-src-base.c: tests/bpf-script-example.c @@ -41,6 +41,13 @@ $(OUTPUT)tests/llvm-src-base.c: tests/bpf-script-example.c $(Q)sed -e 's/"/\\"/g' -e 's/$.*$/"\1\\n"/g' $< >> $@ $(Q)echo ';' >> $@ +$(OUTPUT)tests/llvm-src-kbuild.c: tests/bpf-script-test-kbuild.c + $(call rule_mkdir) + $(Q)echo '#include ' > $@ + $(Q)echo 'const char test_llvm__bpf_test_kbuild_prog[] =' >> $@ + $(Q)sed -e 's/"/\\"/g' -e 's/$.*$/"\1\\n"/g' $< >> $@ + $(Q)echo ';' >> $@ + ifeq ($(ARCH),$(filter $(ARCH),x86 arm arm64)) perf-$(CONFIG_DWARF_UNWIND) += dwarf-unwind.o endif 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 0000000..3626924 --- /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 +#include + +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; diff --git a/tools/perf/tests/llvm.c b/tools/perf/tests/llvm.c index f4f1437..6941e66 100644 --- a/tools/perf/tests/llvm.c +++ b/tools/perf/tests/llvm.c @@ -40,6 +40,10 @@ static struct { .source = test_llvm__bpf_base_prog, .desc = "Basic BPF llvm compiling test", }, + [LLVM_TESTCASE_KBUILD] = { + .source = test_llvm__bpf_test_kbuild_prog, + .desc = "Test kbuild searching", + }, }; diff --git a/tools/perf/tests/llvm.h b/tools/perf/tests/llvm.h index bd63cee..d91d8f4 100644 --- a/tools/perf/tests/llvm.h +++ b/tools/perf/tests/llvm.h @@ -5,9 +5,11 @@ #include /* for bool */ extern const char test_llvm__bpf_base_prog[]; +extern const char test_llvm__bpf_test_kbuild_prog[]; enum test_llvm__testcase { LLVM_TESTCASE_BASE, + LLVM_TESTCASE_KBUILD, __LLVM_TESTCASE_MAX, }; -- 1.8.3.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/