Instead of being able to use normal spinlocks as recursive ones, too,
make recursive spinlocks a special lock type.
This will make the spinlock structure smaller in production builds and
add type-safety.
This allows to increase the maximum number of physical cpus from 8191
to 65535 without increasing the size of the lock structure in production
builds (the size of recursive spinlocks in debug builds will grow to
12 bytes due to that change).
Changes in V2:
- addressed comments by Jan Beulich
- lots of additional cleanups
- reorganized complete series
Changes in V3:
- addressed comments by Jan Beulich
Juergen Gross (13):
xen/spinlock: fix coding style issues
xen/spinlock: reduce lock profile ifdefs
xen/spinlock: make spinlock initializers more readable
xen/spinlock: introduce new type for recursive spinlocks
xen/spinlock: rename recursive lock functions
xen/spinlock: add rspin_[un]lock_irq[save|restore]()
xen/spinlock: make struct lock_profile rspinlock_t aware
xen/spinlock: add explicit non-recursive locking functions
xen/spinlock: add another function level
xen/spinlock: add missing rspin_is_locked() and rspin_barrier()
xen/spinlock: split recursive spinlocks from normal ones
xen/spinlock: remove indirection through macros for spin_*() functions
xen/spinlock: support higher number of cpus
xen/arch/arm/domain.c | 4 +-
xen/arch/arm/mm.c | 4 +-
xen/arch/x86/domain.c | 20 +--
xen/arch/x86/include/asm/mm.h | 2 +-
xen/arch/x86/mm.c | 12 +-
xen/arch/x86/mm/mem_sharing.c | 16 +-
xen/arch/x86/mm/mm-locks.h | 6 +-
xen/arch/x86/mm/p2m-pod.c | 6 +-
xen/arch/x86/mm/p2m.c | 4 +-
xen/arch/x86/tboot.c | 4 +-
xen/arch/x86/traps.c | 14 +-
xen/common/domain.c | 6 +-
xen/common/domctl.c | 4 +-
xen/common/grant_table.c | 10 +-
xen/common/ioreq.c | 54 +++----
xen/common/memory.c | 4 +-
xen/common/numa.c | 4 +-
xen/common/page_alloc.c | 30 ++--
xen/common/spinlock.c | 296 +++++++++++++++++++++++-----------
xen/drivers/char/console.c | 48 ++----
xen/drivers/passthrough/pci.c | 8 +-
xen/include/xen/console.h | 5 +-
xen/include/xen/sched.h | 10 +-
xen/include/xen/spinlock.h | 176 ++++++++++++--------
24 files changed, 449 insertions(+), 298 deletions(-)
--
2.35.3