[tip:perf/urgent] perf tests clang: Fix function name for clang IR test

From: tip-bot for Sandipan Das
Date: Tue Apr 10 2018 - 01:31:33 EST


Commit-ID: fcbd8fa44664e99a5d8c7ab97f1afdd82472f973
Gitweb: https://git.kernel.org/tip/fcbd8fa44664e99a5d8c7ab97f1afdd82472f973
Author: Sandipan Das <sandipan@xxxxxxxxxxxxxxxxxx>
AuthorDate: Wed, 4 Apr 2018 23:34:19 +0530
Committer: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
CommitDate: Mon, 9 Apr 2018 11:13:09 -0300

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

Signed-off-by: Sandipan Das <sandipan@xxxxxxxxxxxxxxxxxx>
Tested-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
Cc: Jiri Olsa <jolsa@xxxxxxxxxx>
Cc: Naveen N. Rao <naveen.n.rao@xxxxxxxxxxxxxxxxxx>
Fixes: e67d52d411c3 ("perf clang: Update test case to use real BPF script")
Link: http://lkml.kernel.org/r/20180404180419.19056-3-sandipan@xxxxxxxxxxxxxxxxxx
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
---
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;
}