linux-kernel - [PATCH 3/3] perf tests clang: Fix function name for clang IR test

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Date:   Wed,  4 Apr 2018 23:34:19 +0530
From:   Sandipan Das <sandipan@...ux.vnet.ibm.com>
To:     acme@...nel.org, jolsa@...hat.com
Cc:     linux-kernel@...r.kernel.org, naveen.n.rao@...ux.vnet.ibm.com
Subject: [PATCH 3/3] perf tests clang: Fix function name for clang IR test

As stated in tests/llvm-src-base.c, the name of the bpf function
should be "bpf_func__SyS_epoll_pwait" but this clang test fails
as it tries to lookup "bpf_func__SyS_epoll_wait".

Before applying patch:

55: builtin clang support                                 :
55.1: builtin clang compile C source to IR                : FAILED!
55.2: builtin clang compile C source to ELF object        : Skip

After applying patch:

55: builtin clang support                                 :
55.1: builtin clang compile C source to IR                : Ok
55.2: builtin clang compile C source to ELF object        : Ok

Fixes: e67d52d411c3 ("perf clang: Update test case to use real BPF script")
Signed-off-by: Sandipan Das <sandipan@...ux.vnet.ibm.com>
---
 tools/perf/util/c++/clang-test.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/perf/util/c++/clang-test.cpp b/tools/perf/util/c++/clang-test.cpp
index a4014d786676..7b042a5ebc68 100644
--- a/tools/perf/util/c++/clang-test.cpp
+++ b/tools/perf/util/c++/clang-test.cpp
@@ -41,7 +41,7 @@ int test__clang_to_IR(void)
 	if (!M)
 		return -1;
 	for (llvm::Function& F : *M)
-		if (F.getName() == "bpf_func__SyS_epoll_wait")
+		if (F.getName() == "bpf_func__SyS_epoll_pwait")
 			return 0;
 	return -1;
 }
-- 
2.14.3