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authorDaniel T. Lee <danieltimlee@gmail.com>2019-12-05 17:01:13 +0900
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2020-01-12 12:17:13 +0100
commit5663eb75ee9ad591b089e92f03029ed970e05baf (patch)
tree08460dff488b9886ec2e41d4c6183bd10ac570bd /samples
parent712cd9d02b8400f1752db9cc2050e402ff874e66 (diff)
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samples: bpf: Replace symbol compare of trace_event
[ Upstream commit bba1b2a890253528c45aa66cf856f289a215bfbc ] 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 Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'samples')
-rw-r--r--samples/bpf/trace_event_user.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/samples/bpf/trace_event_user.c b/samples/bpf/trace_event_user.c
index d08046ab81f0..d33022447d6b 100644
--- a/samples/bpf/trace_event_user.c
+++ b/samples/bpf/trace_event_user.c
@@ -35,9 +35,9 @@ static void print_ksym(__u64 addr)
return;
sym = ksym_search(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;
}