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authorPaul E. McKenney <paulmck@us.ibm.com>2006-10-04 02:17:03 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2006-10-04 07:55:30 -0700
commitb2896d2e75c87ea6a842c088db730b03c91db737 (patch)
tree69411d92f0ba99d3888c6fe8c817708e9a47eb67 /Documentation/RCU/torture.txt
parent621934ee7ed5b073c7fd638b347e632c53572761 (diff)
downloadlinux-linaro-stable-b2896d2e75c87ea6a842c088db730b03c91db737.tar.gz
[PATCH] srcu-3: add SRCU operations to rcutorture
Adds SRCU operations to rcutorture and updates rcutorture documentation. Also increases the stress imposed by the rcutorture test. [bunk@stusta.de: make needlessly global code static] Signed-off-by: Paul E. McKenney <paulmck@us.ibm.com> Cc: Paul E. McKenney <paulmck@us.ibm.com> Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'Documentation/RCU/torture.txt')
-rw-r--r--Documentation/RCU/torture.txt15
1 files changed, 15 insertions, 0 deletions
diff --git a/Documentation/RCU/torture.txt b/Documentation/RCU/torture.txt
index a4948591607d..2174badd31e0 100644
--- a/Documentation/RCU/torture.txt
+++ b/Documentation/RCU/torture.txt
@@ -118,6 +118,21 @@ o "Free-Block Circulation": Shows the number of torture structures
as it is only incremented if a torture structure's counter
somehow gets incremented farther than it should.
+Different implementations of RCU can provide implementation-specific
+additional information. For example, SRCU provides the following:
+
+ srcu-torture: rtc: f8cf46a8 ver: 355 tfle: 0 rta: 356 rtaf: 0 rtf: 346 rtmbe: 0
+ srcu-torture: Reader Pipe: 559738 939 0 0 0 0 0 0 0 0 0
+ srcu-torture: Reader Batch: 560434 243 0 0 0 0 0 0 0 0
+ srcu-torture: Free-Block Circulation: 355 354 353 352 351 350 349 348 347 346 0
+ srcu-torture: per-CPU(idx=1): 0(0,1) 1(0,1) 2(0,0) 3(0,1)
+
+The first four lines are similar to those for RCU. The last line shows
+the per-CPU counter state. The numbers in parentheses are the values
+of the "old" and "current" counters for the corresponding CPU. The
+"idx" value maps the "old" and "current" values to the underlying array,
+and is useful for debugging.
+
USAGE