mm/page_isolation: fix tracepoint to mirror check function behavior

lynxeye-dev · torvalds · commit bbe3de256028 · 2016-04-01T17:03:37.000-05:00
Page isolation has not failed if the fin pfn extends beyond the end pfn
and test_pages_isolated checks this correctly.  Fix the tracepoint to
report the same result as the actual check function.

Signed-off-by: Lucas Stach &lt;l.stach@pengutronix.de&gt;
Acked-by: Vlastimil Babka &lt;vbabka@suse.cz&gt;
Cc: Joonsoo Kim &lt;js1304@gmail.com&gt;
Signed-off-by: Andrew Morton &lt;akpm@linux-foundation.org&gt;
Signed-off-by: Linus Torvalds &lt;torvalds@linux-foundation.org&gt;
diff --git a/include/trace/events/page_isolation.h b/include/trace/events/page_isolation.h
@@ -29,7 +29,7 @@ TRACE_EVENT(test_pages_isolated,
 
 	TP_printk("start_pfn=0x%lx end_pfn=0x%lx fin_pfn=0x%lx ret=%s",
 		__entry->start_pfn, __entry->end_pfn, __entry->fin_pfn,
-		__entry->end_pfn == __entry->fin_pfn ? "success" : "fail")
+		__entry->end_pfn <= __entry->fin_pfn ? "success" : "fail")
 );
 
 #endif /* _TRACE_PAGE_ISOLATION_H */
