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-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
46 46
47shuffle_interval 47shuffle_interval
48 The number of seconds to keep the test threads affinitied 48 The number of seconds to keep the test threads affinitied
49 to a particular subset of the CPUs. Used in conjunction 49 to a particular subset of the CPUs, defaults to 5 seconds.
50 with test_no_idle_hz. 50 Used in conjunction with test_no_idle_hz.
51 51
52test_no_idle_hz Whether or not to test the ability of RCU to operate in 52test_no_idle_hz Whether or not to test the ability of RCU to operate in
53 a kernel that disables the scheduling-clock interrupt to 53 a kernel that disables the scheduling-clock interrupt to
54 idle CPUs. Boolean parameter, "1" to test, "0" otherwise. 54 idle CPUs. Boolean parameter, "1" to test, "0" otherwise.
55 Defaults to omitting this test.
55 56
56torture_type The type of RCU to test: "rcu" for the rcu_read_lock() API, 57torture_type The type of RCU to test: "rcu" for the rcu_read_lock() API,
57 "rcu_sync" for rcu_read_lock() with synchronous reclamation, 58 "rcu_sync" for rcu_read_lock() with synchronous reclamation,
@@ -82,8 +83,6 @@ be evident. ;-)
82 83
83The entries are as follows: 84The entries are as follows:
84 85
85o "ggp": The number of counter flips (or batches) since boot.
86
87o "rtc": The hexadecimal address of the structure currently visible 86o "rtc": The hexadecimal address of the structure currently visible
88 to readers. 87 to readers.
89 88
@@ -117,8 +116,8 @@ o "Reader Pipe": Histogram of "ages" of structures seen by readers.
117o "Reader Batch": Another histogram of "ages" of structures seen 116o "Reader Batch": Another histogram of "ages" of structures seen
118 by readers, but in terms of counter flips (or batches) rather 117 by readers, but in terms of counter flips (or batches) rather
119 than in terms of grace periods. The legal number of non-zero 118 than in terms of grace periods. The legal number of non-zero
120 entries is again two. The reason for this separate view is 119 entries is again two. The reason for this separate view is that
121 that it is easier to get the third entry to show up in the 120 it is sometimes easier to get the third entry to show up in the
122 "Reader Batch" list than in the "Reader Pipe" list. 121 "Reader Batch" list than in the "Reader Pipe" list.
123 122
124o "Free-Block Circulation": Shows the number of torture structures 123o "Free-Block Circulation": Shows the number of torture structures