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| author | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2008-01-25 23:08:25 +0300 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-01-25 23:08:25 +0300 |
| commit | f85d6c7168887e6659f4d00fa5f34fa23dbde1bb (patch) | |
| tree | 8a06a394c5963fe1428d023e03ac9896087b23b2 /Documentation/RCU/torture.txt | |
| parent | eaf649e9fe6685f4c5a392cd0e16df5fd6660b7c (diff) | |
| download | linux-f85d6c7168887e6659f4d00fa5f34fa23dbde1bb.tar.xz | |
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.txt | 11 |
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 |