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author | Linus Torvalds <torvalds@linux-foundation.org> | 2015-09-01 03:12:07 +0200 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2015-09-01 03:12:07 +0200 |
commit | 7073bc66126e3ab742cce9416ad6b4be8b03c4f7 (patch) | |
tree | 18f7d5f3de8a6070481d347e792d9d358813b6b7 /Documentation/kernel-parameters.txt | |
parent | Merge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 (diff) | |
parent | Merge branch 'for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git/pau... (diff) | |
download | linux-7073bc66126e3ab742cce9416ad6b4be8b03c4f7.tar.xz linux-7073bc66126e3ab742cce9416ad6b4be8b03c4f7.zip |
Merge branch 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull RCU updates from Ingo Molnar:
"The main RCU changes in this cycle are:
- the combination of tree geometry-initialization simplifications and
OS-jitter-reduction changes to expedited grace periods. These two
are stacked due to the large number of conflicts that would
otherwise result.
- privatize smp_mb__after_unlock_lock().
This commit moves the definition of smp_mb__after_unlock_lock() to
kernel/rcu/tree.h, in recognition of the fact that RCU is the only
thing using this, that nothing else is likely to use it, and that
it is likely to go away completely.
- documentation updates.
- torture-test updates.
- misc fixes"
* 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (60 commits)
rcu,locking: Privatize smp_mb__after_unlock_lock()
rcu: Silence lockdep false positive for expedited grace periods
rcu: Don't disable CPU hotplug during OOM notifiers
scripts: Make checkpatch.pl warn on expedited RCU grace periods
rcu: Update MAINTAINERS entry
rcu: Clarify CONFIG_RCU_EQS_DEBUG help text
rcu: Fix backwards RCU_LOCKDEP_WARN() in synchronize_rcu_tasks()
rcu: Rename rcu_lockdep_assert() to RCU_LOCKDEP_WARN()
rcu: Make rcu_is_watching() really notrace
cpu: Wait for RCU grace periods concurrently
rcu: Create a synchronize_rcu_mult()
rcu: Fix obsolete priority-boosting comment
rcu: Use WRITE_ONCE in RCU_INIT_POINTER
rcu: Hide RCU_NOCB_CPU behind RCU_EXPERT
rcu: Add RCU-sched flavors of get-state and cond-sync
rcu: Add fastpath bypassing funnel locking
rcu: Rename RCU_GP_DONE_FQS to RCU_GP_DOING_FQS
rcu: Pull out wait_event*() condition into helper function
documentation: Describe new expedited stall warnings
rcu: Add stall warnings to synchronize_sched_expedited()
...
Diffstat (limited to 'Documentation/kernel-parameters.txt')
-rw-r--r-- | Documentation/kernel-parameters.txt | 35 |
1 files changed, 24 insertions, 11 deletions
diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt index 34f2afbf7c15..b09dc2c05fdf 100644 --- a/Documentation/kernel-parameters.txt +++ b/Documentation/kernel-parameters.txt @@ -3137,22 +3137,35 @@ bytes respectively. Such letter suffixes can also be entirely omitted. in a given burst of a callback-flood test. rcutorture.fqs_duration= [KNL] - Set duration of force_quiescent_state bursts. + Set duration of force_quiescent_state bursts + in microseconds. rcutorture.fqs_holdoff= [KNL] - Set holdoff time within force_quiescent_state bursts. + Set holdoff time within force_quiescent_state bursts + in microseconds. rcutorture.fqs_stutter= [KNL] - Set wait time between force_quiescent_state bursts. + Set wait time between force_quiescent_state bursts + in seconds. + + rcutorture.gp_cond= [KNL] + Use conditional/asynchronous update-side + primitives, if available. rcutorture.gp_exp= [KNL] - Use expedited update-side primitives. + Use expedited update-side primitives, if available. rcutorture.gp_normal= [KNL] - Use normal (non-expedited) update-side primitives. - If both gp_exp and gp_normal are set, do both. - If neither gp_exp nor gp_normal are set, still - do both. + Use normal (non-expedited) asynchronous + update-side primitives, if available. + + rcutorture.gp_sync= [KNL] + Use normal (non-expedited) synchronous + update-side primitives, if available. If all + of rcutorture.gp_cond=, rcutorture.gp_exp=, + rcutorture.gp_normal=, and rcutorture.gp_sync= + are zero, rcutorture acts as if is interpreted + they are all non-zero. rcutorture.n_barrier_cbs= [KNL] Set callbacks/threads for rcu_barrier() testing. @@ -3179,9 +3192,6 @@ bytes respectively. Such letter suffixes can also be entirely omitted. Set time (s) between CPU-hotplug operations, or zero to disable CPU-hotplug testing. - rcutorture.torture_runnable= [BOOT] - Start rcutorture running at boot time. - rcutorture.shuffle_interval= [KNL] Set task-shuffle interval (s). Shuffling tasks allows some CPUs to go into dyntick-idle mode @@ -3222,6 +3232,9 @@ bytes respectively. Such letter suffixes can also be entirely omitted. Test RCU's dyntick-idle handling. See also the rcutorture.shuffle_interval parameter. + rcutorture.torture_runnable= [BOOT] + Start rcutorture running at boot time. + rcutorture.torture_type= [KNL] Specify the RCU implementation to test. |