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author | Arnaldo Carvalho de Melo <acme@redhat.com> | 2018-04-18 12:59:03 -0300 |
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committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2018-04-18 15:35:53 -0300 |
commit | eccb1b936363c62544bccb5bbb75afec9536f7e3 (patch) | |
tree | ad9b8aab29d322d65e5fab662cc11755132c318b /tools | |
parent | 518c6021e9b82696819b380cd173e76cac55a01e (diff) | |
download | linux-stable-eccb1b936363c62544bccb5bbb75afec9536f7e3.tar.gz linux-stable-eccb1b936363c62544bccb5bbb75afec9536f7e3.tar.bz2 linux-stable-eccb1b936363c62544bccb5bbb75afec9536f7e3.zip |
perf test BPF: Fixup BPF test using epoll_pwait syscall function probe
Since e145242ea0df ("syscalls/core, syscalls/x86: Clean up syscall stub
naming convention") changed the main syscall function for 'epoll_pwait'
to something other than the expected 'SyS_epoll_pwait the' 'perf test
BPF' entries started failing, fix it by using something called from the
main syscall function instead, 'epoll_wait', which should keep this test
working in older kernels too.
Before:
# perf test BPF
40: BPF filter :
40.1: Basic BPF filtering : FAILED!
40.2: BPF pinning : Skip
40.3: BPF prologue generation : Skip
40.4: BPF relocation checker : Skip
If we use -v for that test we see the problem:
Probe point 'SyS_epoll_pwait' not found.
After:
# perf test BPF
40: BPF filter :
40.1: Basic BPF filtering : Ok
40.2: BPF pinning : Ok
40.3: BPF prologue generation : Ok
40.4: BPF relocation checker : Ok
#
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Dominik Brodowski <linux@dominikbrodowski.net>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: https://lkml.kernel.org/r/tip-y24nmn70cs2am8jh4i344dng@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools')
-rw-r--r-- | tools/perf/tests/bpf-script-example.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/tools/perf/tests/bpf-script-example.c b/tools/perf/tests/bpf-script-example.c index e4123c1b0e88..1ca5106df5f1 100644 --- a/tools/perf/tests/bpf-script-example.c +++ b/tools/perf/tests/bpf-script-example.c @@ -31,7 +31,7 @@ struct bpf_map_def SEC("maps") flip_table = { .max_entries = 1, }; -SEC("func=SyS_epoll_pwait") +SEC("func=do_epoll_wait") int bpf_func__SyS_epoll_pwait(void *ctx) { int ind =0; |