perf test record+probe_libc_inet_pton: Fix call chain match on x86_64

The test case probe libc's inet_pton & backtrace it with ping fails with
Fedora 38 on x86_64.

Function getaddrinfo() does not show up in the call chain anymore:

  # ./perf script
  ping  1803 [000] 728.567146: probe_libc:inet_pton: (7f5275afc840)
            133840 __GI___inet_pton+0x0 (/usr/lib64/libc.so.6)
             27b4a __libc_start_call_main+0x7a (/usr/lib64/libc.so.6)
             27c0b __libc_start_main@@GLIBC_2.34+0x8b (/usr/lib64/libc.so.6)

  ping  1803 [000]   728.567184: probe_libc:inet_pton: (7f5275afc840)
            133840 __GI___inet_pton+0x0 (/usr/lib64/libc.so.6)
              493e main+0xcde (/usr/bin/ping)
             27b4a __libc_start_call_main+0x7a (/usr/lib64/libc.so.6)

  #

which causes the test case to fail. Remove function getaddrinfo()
from list of expected functions.

Output before:

  # ./perf test 'libc'
  91: probe libc's inet_pton & backtrace it with ping    : FAILED!
  #

Output after:

  # ./perf test 'libc'
  91: probe libc's inet_pton & backtrace it with ping    : Ok
  #

Signed-off-by: Thomas Richter <tmricht@linux.ibm.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Heiko Carstens <hca@linux.ibm.com>
Cc: Sumanth Korikkar <sumanthk@linux.ibm.com>
Cc: Sven Schnelle <svens@linux.ibm.com>
Cc: Vasily Gorbik <gor@linux.ibm.com>
Link: https://lore.kernel.org/r/20230503081255.3372986-1-tmricht@linux.ibm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Thomas Richter 2023-05-03 10:12:55 +02:00 committed by Arnaldo Carvalho de Melo
parent 311693ce81
commit 1f85d01676

View File

@ -49,7 +49,6 @@ trace_libc_inet_pton_backtrace() {
;;
*)
eventattr='max-stack=3'
echo "getaddrinfo\+0x[[:xdigit:]]+[[:space:]]\($libc\)$" >> $expected
echo ".*(\+0x[[:xdigit:]]+|\[unknown\])[[:space:]]\(.*/bin/ping.*\)$" >> $expected
;;
esac