From: Sandipan Das sandipan@linux.ibm.com
[ Upstream commit 3eae52f842329a95f8549124079518231c0daba8 ]
For powerpc64, this test currently fails due to a mismatch in the expected output.
This can be observed on a powerpc64le system running Fedora 27 as shown below.
# perf test -v "probe libc's inet_pton & backtrace it with ping"
Before:
62: probe libc's inet_pton & backtrace it with ping : --- start --- test child forked, pid 23948 ping 23965 [003] 71136.075084: probe_libc:inet_pton: (7fff996aaf28) 7fff996aaf28 __GI___inet_pton+0x8 (/usr/lib64/libc-2.26.so) 7fff9965fa54 gaih_inet.constprop.7+0xf44 (/usr/lib64/libc-2.26.so) FAIL: expected backtrace entry 2 "getaddrinfo+0x[[:xdigit:]]+[[:space:]](/usr/lib64/libc-2.26.so)$" got "7fff9965fa54 gaih_inet.constprop.7+0xf44 (/usr/lib64/libc-2.26.so)" test child finished with -1 ---- end ---- probe libc's inet_pton & backtrace it with ping: FAILED!
After:
62: probe libc's inet_pton & backtrace it with ping : --- start --- test child forked, pid 24638 ping 24655 [001] 71208.525396: probe_libc:inet_pton: (7fffa245af28) 7fffa245af28 __GI___inet_pton+0x8 (/usr/lib64/libc-2.26.so) 7fffa240fa54 gaih_inet.constprop.7+0xf44 (/usr/lib64/libc-2.26.so) 7fffa24105b4 getaddrinfo+0x164 (/usr/lib64/libc-2.26.so) 138d52d70 main+0x3e0 (/usr/bin/ping) test child finished with 0 ---- end ---- probe libc's inet_pton & backtrace it with ping: Ok
Signed-off-by: Sandipan Das sandipan@linux.ibm.com Cc: Jiri Olsa jolsa@redhat.com Cc: Kim Phillips kim.phillips@arm.com Cc: Maynard Johnson maynard@us.ibm.com Cc: Naveen N. Rao naveen.n.rao@linux.vnet.ibm.com Cc: Ravi Bangoria ravi.bangoria@linux.vnet.ibm.com Cc: Sukadev Bhattiprolu sukadev@linux.vnet.ibm.com Fixes: e07d585e2454 ("perf tests: Switch trace+probe_libc_inet_pton to use record") Link: http://lkml.kernel.org/r/49621ec5f37109f0655e5a8c32287ad68d85a1e5.1530724939... Signed-off-by: Arnaldo Carvalho de Melo acme@redhat.com Signed-off-by: Sasha Levin alexander.levin@microsoft.com --- tools/perf/tests/shell/record+probe_libc_inet_pton.sh | 6 ++++++ 1 file changed, 6 insertions(+)
diff --git a/tools/perf/tests/shell/record+probe_libc_inet_pton.sh b/tools/perf/tests/shell/record+probe_libc_inet_pton.sh index 94e513e62b34..1220e5e052bb 100755 --- a/tools/perf/tests/shell/record+probe_libc_inet_pton.sh +++ b/tools/perf/tests/shell/record+probe_libc_inet_pton.sh @@ -26,6 +26,12 @@ trace_libc_inet_pton_backtrace() { echo "(__GI_)?getaddrinfo+0x[[:xdigit:]]+[[:space:]]($libc|inlined)$" >> $expected echo "main+0x[[:xdigit:]]+[[:space:]](.*/bin/ping.*)$" >> $expected ;; + ppc64|ppc64le) + eventattr='max-stack=4' + echo "gaih_inet.*+0x[[:xdigit:]]+[[:space:]]($libc)$" >> $expected + echo "getaddrinfo+0x[[:xdigit:]]+[[:space:]]($libc)$" >> $expected + echo ".*+0x[[:xdigit:]]+[[:space:]](.*/bin/ping.*)$" >> $expected + ;; *) eventattr='max-stack=3' echo "getaddrinfo+0x[[:xdigit:]]+[[:space:]]($libc)$" >> $expected