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[v2,0/9] Cleanup of qemu_oom_check() and qemu_memalign()

Message ID 20220304112126.2261039-1-peter.maydell@linaro.org
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Series Cleanup of qemu_oom_check() and qemu_memalign() | expand

Message

Peter Maydell March 4, 2022, 11:21 a.m. UTC 
This series does some cleanup of the qemu_oom_check() and
qemu_memalign() functions; I started looking at the first of these and
found myself wanting to tidy some stuff relating to the second in the
process. The TLDR is that this series removes qemu_oom_check() (which
was mostly being misused), unifies the POSIX and Win32 versions of
qemu_memalign() and qemu_try_memalign(), and moves the prototypes out
of osdep.h.

Changes v1->v2:
 * Replacement patch 4, which takes the approach discussed in
   comments on v1 of making all our implementations handle
   size == 0 by doing a size 1 allocation
 * two #include lines accidentally added in patch 7 are
   moved to patch 6 where they belong (fixes compile failure
   during bisect)

Patch 4 is the only one needing review.

(When I came to make this change I decided that there was
just a bit more involved than I was happy making in passing
while assembling a pull request.)

thanks
-- PMM


Peter Maydell (9):
  hw/usb/redirect.c: Stop using qemu_oom_check()
  util: Make qemu_oom_check() a static function
  util: Unify implementations of qemu_memalign()
  util: Return valid allocation for qemu_try_memalign() with zero size
  meson.build: Don't misdetect posix_memalign() on Windows
  util: Share qemu_try_memalign() implementation between POSIX and
    Windows
  util: Use meson checks for valloc() and memalign() presence
  util: Put qemu_vfree() in memalign.c
  osdep: Move memalign-related functions to their own header

 meson.build                    |  7 ++-
 include/qemu-common.h          |  2 -
 include/qemu/memalign.h        | 61 ++++++++++++++++++++++
 include/qemu/osdep.h           | 18 -------
 block/blkverify.c              |  1 +
 block/block-copy.c             |  1 +
 block/commit.c                 |  1 +
 block/crypto.c                 |  1 +
 block/dmg.c                    |  1 +
 block/export/fuse.c            |  1 +
 block/file-posix.c             |  1 +
 block/io.c                     |  1 +
 block/mirror.c                 |  1 +
 block/nvme.c                   |  1 +
 block/parallels-ext.c          |  1 +
 block/parallels.c              |  1 +
 block/qcow.c                   |  1 +
 block/qcow2-cache.c            |  1 +
 block/qcow2-cluster.c          |  1 +
 block/qcow2-refcount.c         |  1 +
 block/qcow2-snapshot.c         |  1 +
 block/qcow2.c                  |  1 +
 block/qed-l2-cache.c           |  1 +
 block/qed-table.c              |  1 +
 block/qed.c                    |  1 +
 block/quorum.c                 |  1 +
 block/raw-format.c             |  1 +
 block/vdi.c                    |  1 +
 block/vhdx-log.c               |  1 +
 block/vhdx.c                   |  1 +
 block/vmdk.c                   |  1 +
 block/vpc.c                    |  1 +
 block/win32-aio.c              |  1 +
 hw/block/dataplane/xen-block.c |  1 +
 hw/block/fdc.c                 |  1 +
 hw/ide/core.c                  |  1 +
 hw/ppc/spapr.c                 |  1 +
 hw/ppc/spapr_softmmu.c         |  1 +
 hw/scsi/scsi-disk.c            |  1 +
 hw/tpm/tpm_ppi.c               |  2 +-
 hw/usb/redirect.c              | 17 +++++--
 nbd/server.c                   |  1 +
 net/l2tpv3.c                   |  2 +-
 plugins/loader.c               |  1 +
 qemu-img.c                     |  1 +
 qemu-io-cmds.c                 |  1 +
 qom/object.c                   |  1 +
 softmmu/physmem.c              |  1 +
 target/i386/hvf/hvf.c          |  1 +
 target/i386/kvm/kvm.c          |  1 +
 tcg/region.c                   |  1 +
 tests/bench/atomic_add-bench.c |  1 +
 tests/bench/qht-bench.c        |  1 +
 util/atomic64.c                |  1 +
 util/memalign.c                | 92 ++++++++++++++++++++++++++++++++++
 util/oslib-posix.c             | 46 -----------------
 util/oslib-win32.c             | 35 -------------
 util/qht.c                     |  1 +
 util/meson.build               |  1 +
 59 files changed, 224 insertions(+), 107 deletions(-)
 create mode 100644 include/qemu/memalign.h
 create mode 100644 util/memalign.c