perf probe: Fix strtailcmp() to compare s1and s2[0]
Fix strtailcmp() to compare s1[0] and s2[0]. strtailcmp() returns 0 if "a" and "b" or "a" and "ab", it's a wrong behavior. This patch fixes it. Signed-off-by: "Juha Leppanen" <juha_motorsportcom@luukku.com> Acked-by: Masami Hiramatsu <mhiramat@redhat.com> Cc: systemtap <systemtap@sources.redhat.com> Cc: DLE <dle-develop@lists.sourceforge.net> Cc: Juha Leppanen <juha_motorsportcom@luukku.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> LKML-Reference: <20091207170040.19230.37464.stgit@dhcp-100-2-132.bos.redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
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@ -106,7 +106,7 @@ static int strtailcmp(const char *s1, const char *s2)
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{
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int i1 = strlen(s1);
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int i2 = strlen(s2);
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while (--i1 > 0 && --i2 > 0) {
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while (--i1 >= 0 && --i2 >= 0) {
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if (s1[i1] != s2[i2])
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return s1[i1] - s2[i2];
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}
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