diff options
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 | |||
46 | 46 | ||
47 | shuffle_interval | 47 | shuffle_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 | ||
52 | test_no_idle_hz Whether or not to test the ability of RCU to operate in | 52 | test_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 | ||
56 | torture_type The type of RCU to test: "rcu" for the rcu_read_lock() API, | 57 | torture_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 | ||
83 | The entries are as follows: | 84 | The entries are as follows: |
84 | 85 | ||
85 | o "ggp": The number of counter flips (or batches) since boot. | ||
86 | |||
87 | o "rtc": The hexadecimal address of the structure currently visible | 86 | o "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. | |||
117 | o "Reader Batch": Another histogram of "ages" of structures seen | 116 | o "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 | ||
124 | o "Free-Block Circulation": Shows the number of torture structures | 123 | o "Free-Block Circulation": Shows the number of torture structures |