aboutsummaryrefslogtreecommitdiff
path: root/Documentation/RCU/torture.txt
diff options
context:
space:
mode:
authorPaul E. McKenney <paulmck@linux.vnet.ibm.com>2008-01-25 21:08:25 +0100
committerIngo Molnar <mingo@elte.hu>2008-01-25 21:08:25 +0100
commitf85d6c7168887e6659f4d00fa5f34fa23dbde1bb (patch)
tree8a06a394c5963fe1428d023e03ac9896087b23b2 /Documentation/RCU/torture.txt
parenteaf649e9fe6685f4c5a392cd0e16df5fd6660b7c (diff)
downloadlinux-linaro-stable-f85d6c7168887e6659f4d00fa5f34fa23dbde1bb.tar.gz
Preempt-RCU: update RCU Documentation.
This patch updates the RCU documentation to reflect preemptible RCU as well as recent publications. Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Signed-off-by: Gautham R Shenoy <ego@in.ibm.com> Reviewed-by: Steven Rostedt <srostedt@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'Documentation/RCU/torture.txt')
-rw-r--r--Documentation/RCU/torture.txt11
1 files changed, 5 insertions, 6 deletions
diff --git a/Documentation/RCU/torture.txt b/Documentation/RCU/torture.txt
index 25a3c3f7d378..2967a65269d8 100644
--- a/Documentation/RCU/torture.txt
+++ b/Documentation/RCU/torture.txt
@@ -46,12 +46,13 @@ stat_interval The number of seconds between output of torture
shuffle_interval
The number of seconds to keep the test threads affinitied
- to a particular subset of the CPUs. Used in conjunction
- with test_no_idle_hz.
+ to a particular subset of the CPUs, defaults to 5 seconds.
+ Used in conjunction with test_no_idle_hz.
test_no_idle_hz Whether or not to test the ability of RCU to operate in
a kernel that disables the scheduling-clock interrupt to
idle CPUs. Boolean parameter, "1" to test, "0" otherwise.
+ Defaults to omitting this test.
torture_type The type of RCU to test: "rcu" for the rcu_read_lock() API,
"rcu_sync" for rcu_read_lock() with synchronous reclamation,
@@ -82,8 +83,6 @@ be evident. ;-)
The entries are as follows:
-o "ggp": The number of counter flips (or batches) since boot.
-
o "rtc": The hexadecimal address of the structure currently visible
to readers.
@@ -117,8 +116,8 @@ o "Reader Pipe": Histogram of "ages" of structures seen by readers.
o "Reader Batch": Another histogram of "ages" of structures seen
by readers, but in terms of counter flips (or batches) rather
than in terms of grace periods. The legal number of non-zero
- entries is again two. The reason for this separate view is
- that it is easier to get the third entry to show up in the
+ entries is again two. The reason for this separate view is that
+ it is sometimes easier to get the third entry to show up in the
"Reader Batch" list than in the "Reader Pipe" list.
o "Free-Block Circulation": Shows the number of torture structures