search for: lsteal

Displaying 9 results from an estimated 9 matches for "lsteal".

Did you mean: steal
2014 May 07
0
[PATCH v10 12/19] unfair qspinlock: Variable frequency lock stealing mechanism
...ons(+), 1 deletions(-) diff --git a/kernel/locking/qspinlock.c b/kernel/locking/qspinlock.c index a14241e..06dd486 100644 --- a/kernel/locking/qspinlock.c +++ b/kernel/locking/qspinlock.c @@ -63,6 +63,11 @@ */ struct qnode { struct mcs_spinlock mcs; +#ifdef CONFIG_PARAVIRT_UNFAIR_LOCKS + int lsteal_mask; /* Lock stealing frequency mask */ + u32 prev_tail; /* Tail code of previous node */ + struct qnode *qprev; /* Previous queue node addr */ +#endif }; #define qhead mcs.locked /* The queue head flag */ @@ -215,6 +220,139 @@ xchg_tail(struct qspinlock *lock, u32 tail, u32 *pval) } #en...
2014 Apr 01
10
[PATCH v8 00/10] qspinlock: a 4-byte queue spinlock with PV support
v7->v8: - Remove one unneeded atomic operation from the slowpath, thus improving performance. - Simplify some of the codes and add more comments. - Test for X86_FEATURE_HYPERVISOR CPU feature bit to enable/disable unfair lock. - Reduce unfair lock slowpath lock stealing frequency depending on its distance from the queue head. - Add performance data for IvyBridge-EX CPU.
2014 Apr 01
10
[PATCH v8 00/10] qspinlock: a 4-byte queue spinlock with PV support
v7->v8: - Remove one unneeded atomic operation from the slowpath, thus improving performance. - Simplify some of the codes and add more comments. - Test for X86_FEATURE_HYPERVISOR CPU feature bit to enable/disable unfair lock. - Reduce unfair lock slowpath lock stealing frequency depending on its distance from the queue head. - Add performance data for IvyBridge-EX CPU.
2014 Apr 02
17
[PATCH v8 00/10] qspinlock: a 4-byte queue spinlock with PV support
N.B. Sorry for the duplicate. This patch series were resent as the original one was rejected by the vger.kernel.org list server due to long header. There is no change in content. v7->v8: - Remove one unneeded atomic operation from the slowpath, thus improving performance. - Simplify some of the codes and add more comments. - Test for X86_FEATURE_HYPERVISOR CPU feature bit
2014 Apr 02
17
[PATCH v8 00/10] qspinlock: a 4-byte queue spinlock with PV support
N.B. Sorry for the duplicate. This patch series were resent as the original one was rejected by the vger.kernel.org list server due to long header. There is no change in content. v7->v8: - Remove one unneeded atomic operation from the slowpath, thus improving performance. - Simplify some of the codes and add more comments. - Test for X86_FEATURE_HYPERVISOR CPU feature bit
2014 Apr 17
33
[PATCH v9 00/19] qspinlock: a 4-byte queue spinlock with PV support
v8->v9: - Integrate PeterZ's version of the queue spinlock patch with some modification: http://lkml.kernel.org/r/20140310154236.038181843 at infradead.org - Break the more complex patches into smaller ones to ease review effort. - Fix a racing condition in the PV qspinlock code. v7->v8: - Remove one unneeded atomic operation from the slowpath, thus improving
2014 Apr 17
33
[PATCH v9 00/19] qspinlock: a 4-byte queue spinlock with PV support
v8->v9: - Integrate PeterZ's version of the queue spinlock patch with some modification: http://lkml.kernel.org/r/20140310154236.038181843 at infradead.org - Break the more complex patches into smaller ones to ease review effort. - Fix a racing condition in the PV qspinlock code. v7->v8: - Remove one unneeded atomic operation from the slowpath, thus improving
2014 May 07
32
[PATCH v10 00/19] qspinlock: a 4-byte queue spinlock with PV support
v9->v10: - Make some minor changes to qspinlock.c to accommodate review feedback. - Change author to PeterZ for 2 of the patches. - Include Raghavendra KT's test results in patch 18. v8->v9: - Integrate PeterZ's version of the queue spinlock patch with some modification: http://lkml.kernel.org/r/20140310154236.038181843 at infradead.org - Break the more complex
2014 May 07
32
[PATCH v10 00/19] qspinlock: a 4-byte queue spinlock with PV support
v9->v10: - Make some minor changes to qspinlock.c to accommodate review feedback. - Change author to PeterZ for 2 of the patches. - Include Raghavendra KT's test results in patch 18. v8->v9: - Integrate PeterZ's version of the queue spinlock patch with some modification: http://lkml.kernel.org/r/20140310154236.038181843 at infradead.org - Break the more complex