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[Qemu-devel] [PATCH v2 00/10] tb hash improvements
From: |
Emilio G. Cota |
Subject: |
[Qemu-devel] [PATCH v2 00/10] tb hash improvements |
Date: |
Thu, 7 Apr 2016 13:32:25 -0400 |
See v1 for context:
https://lists.gnu.org/archive/html/qemu-devel/2016-04/msg00587.html
All patches in v2 are checkpatch-clean, except 05 (checkpatch should
be ignored for this one) and 06, which I took unmodified (later patches
fix those warnings while doing other things, anyway).
Note that patch 01 has already been picked up by Paolo; I left it
here for completeness.
Another patch that is related to this series is the transition of
tb->flags to uint32_t; this has been sent as a separate patch since
it touches all targets. It shouldn't conflict with this patchset.
Changes from v1:
- Drop QEMU_CACHELINE, define QEMU_ALIGNED()
+ Remove excessive caution about Windows: it supports it.
+ define QHT_BUCKET_ALIGN as 64
- Add some reviewed-by tags from Alex.
- Drop POSIX spinlock wrapper; use the one pointed out by Paolo
+ Add a couple of fixes over this spinlock implementation:
* define cpu_relax() for some architectures
* Optimize spin_lock() for uncontended cases
- Add tb_hash_func5, a version of xxhash32 customized for tb-hash, so
that the input values do not have to be contiguous in memory.
+ Drop xxhash.h, add only the customized version at exec/tb-hash-xx.h
- qht
+ use size_t for counts in qht
* Drop some 2**32 size checks in there; it's not really a problem
in practice.
+ s/__func/func__locked/
+ Test program: hash with tb_hash_func5
Thanks,
Emilio
- [Qemu-devel] [PATCH v2 00/10] tb hash improvements,
Emilio G. Cota <=
- [Qemu-devel] [PATCH v2 05/13] include/processor.h: define cpu_relax(), Emilio G. Cota, 2016/04/07
- [Qemu-devel] [PATCH v2 12/13] qht: add test program, Emilio G. Cota, 2016/04/07
- [Qemu-devel] [PATCH v2 09/13] exec: add tb_hash_func5, derived from xxhash, Emilio G. Cota, 2016/04/07
- [Qemu-devel] [PATCH v2 04/13] seqlock: rename write_lock/unlock to write_begin/end, Emilio G. Cota, 2016/04/07
- [Qemu-devel] [PATCH v2 06/13] qemu-thread: add simple test-and-set spinlock, Emilio G. Cota, 2016/04/07