|author||Paul E. McKenney <email@example.com>||2008-01-25 21:08:25 +0100|
|committer||Ingo Molnar <firstname.lastname@example.org>||2008-01-25 21:08:25 +0100|
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 <email@example.com> Signed-off-by: Gautham R Shenoy <firstname.lastname@example.org> Reviewed-by: Steven Rostedt <email@example.com> Signed-off-by: Ingo Molnar <firstname.lastname@example.org>
Diffstat (limited to 'Documentation/RCU/torture.txt')
1 files changed, 5 insertions, 6 deletions
diff --git a/Documentation/RCU/torture.txt b/Documentation/RCU/torture.txt
index 25a3c3f7d378..2967a65269d8 100644
@@ -46,12 +46,13 @@ stat_interval The number of seconds between output of torture
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
@@ -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