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authorArnaldo Carvalho de Melo <acme@redhat.com>2010-06-17 08:37:44 -0300
committerArnaldo Carvalho de Melo <acme@redhat.com>2010-06-17 08:37:44 -0300
commit720a3aeb7373cb49cf222d5f12e121f78d3d4410 (patch)
treee2451f06fe4983c4aae971bdaf31fe538a7fec1a /tools/perf/util/thread.h
parent174787cb5144e5a45141ec7cb9d95ea29bbe22bb (diff)
perf session: Remove threads from tree on PERF_RECORD_EXIT
Move them to a session->dead_threads list just like we do with maps that are replaced, because we may have hist_entries pointing to them. This fixes a bug when inserting maps for a new thread that reused the TID, mixing maps for two different threads, causing an endless loop. The code for insering maps should be made more robust but for .35 this is the minimalistic patch. Reported-by: Ingo Molnar <mingo@elte.hu> Cc: David S. Miller <davem@davemloft.net> Cc: Frédéric Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Tom Zanussi <tzanussi@gmail.com> LKML-Reference: <new-submission> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util/thread.h')
-rw-r--r--tools/perf/util/thread.h5
1 files changed, 4 insertions, 1 deletions
diff --git a/tools/perf/util/thread.h b/tools/perf/util/thread.h
index 1dfd9ff8bdcd..ee6bbcf277ca 100644
--- a/tools/perf/util/thread.h
+++ b/tools/perf/util/thread.h
@@ -6,7 +6,10 @@
#include "symbol.h"
struct thread {
- struct rb_node rb_node;
+ union {
+ struct rb_node rb_node;
+ struct list_head node;
+ };
struct map_groups mg;
pid_t pid;
char shortname[3];