[0/2] Use QLNULL for null lockable

Message

Slater, Joseph June 3, 2020, 10:49 p.m. UTC

We currently will fail to build for optimizations like -Og because they do not
eliminate dead code.  We do not need such clean up if we use QLNULL.  There is no
need to produce a QemuLockable that will be thrown away.

Only testing:

$ ../configure
$ make -j16 CFLAGS="$CFLAGS"      # which I set to use -Og, then -O2

Joe Slater (2):
  lockable:  use QLNULL for a null lockable
  lockable: do not rely on optimization for null lockables

 block/block-backend.c          |  4 ++--
 block/block-copy.c             |  2 +-
 block/mirror.c                 |  5 +++--
 fsdev/qemu-fsdev-throttle.c    |  6 +++---
 hw/9pfs/9p.c                   |  2 +-
 include/qemu/lockable.h        | 16 ++++++----------
 util/qemu-co-shared-resource.c |  2 +-
 7 files changed, 17 insertions(+), 20 deletions(-)