| Commit message (Collapse) | Author | Age | Files | Lines |
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Change-Id: I4a9cfc1f55c09ff6d02dce80889ac2e3150ab137
RTC: 44504
Reviewed-on: http://gfw160.austin.ibm.com:8080/gerrit/1619
Tested-by: Jenkins Server
Reviewed-by: Douglas R. Gilbert <dgilbert@us.ibm.com>
Reviewed-by: Daniel M. Crowell <dcrowell@us.ibm.com>
Reviewed-by: A. Patrick Williams III <iawillia@us.ibm.com>
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The Power processor has instructions of the form 'or a,a,a'
that allow code to change the priority of a hw-thread relative
to the others. We initially used 'or 1,1,1' as low priority
and 'or 3,3,3' as high priority. This is used in, for instance,
spinlocks to reduce the priority of a hw-thread while waiting
for another thread to perform an activity.
This code originally came from HAL. In reading the Power ISA
closer I realized that 'or 3,3,3' has no effect when in
user-space code, which means that a spinlock-like effect in
user code is going to end up with the thread stuck at low
priority until the next context switch. To prevent this we
are going to change from 1/3 to 1/2 as the priority levels.
Change-Id: I60ee866cde37499106f5e1e1d68a0b5ddeedf403
Reviewed-on: http://gfw160.austin.ibm.com:8080/gerrit/1569
Tested-by: Jenkins Server
Reviewed-by: A. Patrick Williams III <iawillia@us.ibm.com>
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RTC: 44730
Change-Id: Ifaeecc659e1bfd8ded4744dc591fc993471519ba
Reviewed-on: http://gfw160.austin.ibm.com:8080/gerrit/1471
Tested-by: Jenkins Server
Reviewed-by: Mark W. Wenning <wenning@us.ibm.com>
Reviewed-by: A. Patrick Williams III <iawillia@us.ibm.com>
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Task 44887
Change-Id: If87b6e80b974bb4cbff13844d8a3f055a17282d2
Reviewed-on: http://gfw160.austin.ibm.com:8080/gerrit/1378
Tested-by: Jenkins Server
Reviewed-by: Daniel M. Crowell <dcrowell@us.ibm.com>
Reviewed-by: Douglas R. Gilbert <dgilbert@us.ibm.com>
Reviewed-by: Mark W. Wenning <wenning@us.ibm.com>
Reviewed-by: A. Patrick Williams III <iawillia@us.ibm.com>
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RTC: 37009
Change-Id: I56669805c86d9659a20ad7c26e5e9860c7a248c7
Reviewed-on: http://gfw160.austin.ibm.com:8080/gerrit/1087
Tested-by: Jenkins Server
Reviewed-by: A. Patrick Williams III <iawillia@us.ibm.com>
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RTC: 40764
Change-Id: Ic5b5b3e80915cb4f0ee543baa6fe4abc51e07ad2
Reviewed-on: http://gfw160.austin.ibm.com:8080/gerrit/1079
Tested-by: Jenkins Server
Reviewed-by: A. Patrick Williams III <iawillia@us.ibm.com>
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- Reduce DCBZ and ICBI calls in memory copy and init functions.
- Reduce strlen calls in trace.
- Set thread to low priority while waiting on in-kernel barrier.
Change-Id: Ic9c23b1e26797ff393e5862819830de60554747e
Reviewed-on: http://gfw160.austin.ibm.com:8080/gerrit/871
Tested-by: Jenkins Server
Reviewed-by: Douglas R. Gilbert <dgilbert@us.ibm.com>
Reviewed-by: Daniel M. Crowell <dcrowell@us.ibm.com>
Reviewed-by: Brian H. Horton <brianh@linux.ibm.com>
Reviewed-by: A. Patrick Williams III <iawillia@us.ibm.com>
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Change-Id: I5f5d9c30b4cc0f0d8704fb99c10757e0f41018bf
Reviewed-on: http://gfw160.austin.ibm.com:8080/gerrit/603
Tested-by: Jenkins Server
Reviewed-by: A. Patrick Williams III <iawillia@us.ibm.com>
Reviewed-by: Mark W. Wenning <wenning@us.ibm.com>
Reviewed-by: MIKE J. JONES <mjjones@us.ibm.com>
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Change-Id: I205f2409e56032cfc0aaf01d7e26d357f0b86373
Reviewed-on: http://gfw160.austin.ibm.com:8080/gerrit/277
Reviewed-by: A. Patrick Williams III <iawillia@us.ibm.com>
Tested-by: Jenkins Server
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Change-Id: Iaa6a256a8a15ac48bfba5bc1cab292c5ac246166
Reviewed-on: http://gfw160.austin.ibm.com:8080/gerrit/253
Tested-by: Jenkins Server
Reviewed-by: A. Patrick Williams III <iawillia@us.ibm.com>
Reviewed-by: Daniel M. Crowell <dcrowell@us.ibm.com>
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Change-Id: Ia063a66b705b3272b7578ece420c84ac9c4c3d26
Reviewed-on: http://gfw160.austin.ibm.com:8080/gerrit/224
Reviewed-by: Douglas R. Gilbert <dgilbert@us.ibm.com>
Reviewed-by: Daniel M. Crowell <dcrowell@us.ibm.com>
Tested-by: Jenkins Server
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- Final fix for mutex bug.
- Document weak-consistency decisions in mutex code.
- Prevent aggressive optimizations around lwsync/isync instrs.
- Fix minor bug in futex_wait system call.
- Optimize futex path with likely/unlikely hints.
Change-Id: I26b54dee7e45bcb42195f730474b350b44f53cfc
Reviewed-on: http://gfw160.austin.ibm.com:8080/gerrit/233
Tested-by: Jenkins Server
Reviewed-by: A. Patrick Williams III <iawillia@us.ibm.com>
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Change-Id: I03a7460b347b47f4653a6f457d1d7711fc0a0512
Reviewed-on: http://gfw160.austin.ibm.com:8080/gerrit/209
Tested-by: Jenkins Server
Reviewed-by: Douglas R. Gilbert <dgilbert@us.ibm.com>
Reviewed-by: MATTHEW S. BARTH <msbarth@us.ibm.com>
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Change-Id: If2ab46af85065b29695a1186ed331fd835944eb4
Reviewed-on: http://gfw160.austin.ibm.com:8080/gerrit/204
Tested-by: Jenkins Server
Reviewed-by: Mark W. Wenning <wenning@us.ibm.com>
Reviewed-by: A. Patrick Williams III <iawillia@us.ibm.com>
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Change-Id: I65b2be9a5a5166cd946033e34cedd87345e55979
Reviewed-on: http://gfwr801.rchland.ibm.com:8080/gerrit/4
Tested-by: Jenkins Server
Tested-by: Andrew J. Geissler <andrewg@us.ibm.com>
Reviewed-by: Andrew J. Geissler <andrewg@us.ibm.com>
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dd45c30bd53d8e6c123165b83842d08117558a3c
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