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| author |   Daniel T. Lee <danieltimlee@gmail.com> | 2019-12-05 17:01:13 +0900 |
|---|---|---|
| committer |   Alexei Starovoitov <ast@kernel.org> | 2019-12-11 15:27:28 -0800 |
| commit | bba1b2a890253528c45aa66cf856f289a215bfbc (patch) | |
| tree | 9904527553fc4a39078b9602f0d99ab1905e1e04 /samples | |
| parent | selftests/bpf: Test function_graph tracer and bpf trampoline together (diff) | |
| download | wireguard-linux-bba1b2a890253528c45aa66cf856f289a215bfbc.tar.xz wireguard-linux-bba1b2a890253528c45aa66cf856f289a215bfbc.zip | |
samples: bpf: Replace symbol compare of trace_event
Previously, when this sample is added, commit 1c47910ef8013
("samples/bpf: add perf_event+bpf example"), a symbol 'sys_read' and
'sys_write' has been used without no prefixes. But currently there are
no exact symbols with these under kallsyms and this leads to failure.
This commit changes exact compare to substring compare to keep compatible
with exact symbol or prefixed symbol.
Fixes: 1c47910ef8013 ("samples/bpf: add perf_event+bpf example")
Signed-off-by: Daniel T. Lee <danieltimlee@gmail.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20191205080114.19766-2-danieltimlee@gmail.com
Diffstat (limited to 'samples')
| -rw-r--r-- | samples/bpf/trace_event_user.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/samples/bpf/trace_event_user.c b/samples/bpf/trace_event_user.c index 16a16eadd509..749a50f2f9f3 100644 --- a/samples/bpf/trace_event_user.c +++ b/samples/bpf/trace_event_user.c @@ -37,9 +37,9 @@ static void print_ksym(__u64 addr) } printf("%s;", sym->name); - if (!strcmp(sym->name, "sys_read")) + if (!strstr(sym->name, "sys_read")) sys_read_seen = true; - else if (!strcmp(sym->name, "sys_write")) + else if (!strstr(sym->name, "sys_write")) sys_write_seen = true; } |