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Mark Johnston 991f23ef20 uma: Avoid allocating buckets with the cross-domain lock held 
Allocation of a bucket can trigger a cross-domain free in the bucket
zone, e.g., if the per-CPU alloc bucket is empty, we free it and get
migrated to a remote domain.  This can lead to deadlocks since a bucket
zone may allocate buckets from itself or a pair of bucket zones could be
allocating from each other.

Fix the problem by dropping the cross-domain lock before allocating a
new bucket and handling refill races.  Use a list of empty buckets to
ensure that we can make forward progress.

Reported by:	imp, mjg (witness(9) warnings)
Discussed with:	jeff
Sponsored by:	The FreeBSD Foundation
Differential Revision:	https://reviews.freebsd.org/D27341
2020-11-30 16:18:33 +00:00
..
_vm_phys.h
vm_phys: Try to clean up NUMA KPIs
2020-11-19 03:59:21 +00:00
_vm_radix.h
…
default_pager.c
vm: clean up empty lines in .c and .h files
2020-09-01 21:20:45 +00:00
device_pager.c
Don't hold the object lock while calling getpages.
2020-01-19 23:47:32 +00:00
memguard.c
vm: clean up empty lines in .c and .h files
2020-09-01 21:20:45 +00:00
memguard.h
LinuxKPI: Implement ksize() function.
2020-08-29 19:26:31 +00:00
phys_pager.c
Allow consumer to customize physical pager.
2020-09-09 00:00:43 +00:00
pmap.h
Add pmap_enter(9) PMAP_ENTER_LARGEPAGE flag and implement it on amd64.
2020-09-09 21:50:24 +00:00
redzone.c
vm: clean up empty lines in .c and .h files
2020-09-01 21:20:45 +00:00
redzone.h
…
sg_pager.c
vm: clean up empty lines in .c and .h files
2020-09-01 21:20:45 +00:00
swap_pager.c
Make MAXPHYS tunable. Bump MAXPHYS to 1M.
2020-11-28 12:12:51 +00:00
swap_pager.h
Remove swblk_t.
2020-02-17 15:11:07 +00:00
uma_core.c
uma: Avoid allocating buckets with the cross-domain lock held
2020-11-30 16:18:33 +00:00
uma_dbg.c
Fix compilation failures on different arches that have vm_machdep.c not
2019-01-15 19:33:47 +00:00
uma_dbg.h
…
uma_int.h
vm: clean up empty lines in .c and .h files
2020-09-01 21:20:45 +00:00
uma.h
Add more per-cpu zones.
2020-11-09 00:34:23 +00:00
vm_domainset.c
Add interruptible variant of vm_wait(9), vm_wait_intr(9).
2020-09-08 23:28:09 +00:00
vm_domainset.h
Add interruptible variant of vm_wait(9), vm_wait_intr(9).
2020-09-08 23:28:09 +00:00
vm_dumpset.h
Avoid dump_avail[] redefinition.
2020-10-14 22:51:40 +00:00
vm_extern.h
Remove the VM map zone.
2020-08-17 13:02:01 +00:00
vm_fault.c
Make MAXPHYS tunable. Bump MAXPHYS to 1M.
2020-11-28 12:12:51 +00:00
vm_glue.c
vmspace: Convert to refcount(9)
2020-11-04 16:30:56 +00:00
vm_init.c
Make MAXPHYS tunable. Bump MAXPHYS to 1M.
2020-11-28 12:12:51 +00:00
vm_kern.c
vm_phys: Try to clean up NUMA KPIs
2020-11-19 03:59:21 +00:00
vm_kern.h
Remove the VM map zone.
2020-08-17 13:02:01 +00:00
vm_map.c
vm_map: Handle kernel map entry allocator recursion
2020-11-11 17:16:39 +00:00
vm_map.h
Make MAXPHYS tunable. Bump MAXPHYS to 1M.
2020-11-28 12:12:51 +00:00
vm_meter.c
vm: clean up empty lines in .c and .h files
2020-09-01 21:20:45 +00:00
vm_mmap.c
Support for userspace non-transparent superpages (largepages).
2020-09-09 22:12:51 +00:00
vm_object.c
Allow consumer to customize physical pager.
2020-09-09 00:00:43 +00:00
vm_object.h
Allow consumer to customize physical pager.
2020-09-09 00:00:43 +00:00
vm_page.c
Wrap a long line in vm_pqbatch_process_page()
2020-11-19 15:41:42 +00:00
vm_page.h
vm_phys: Try to clean up NUMA KPIs
2020-11-19 03:59:21 +00:00
vm_pageout.c
vm_pageout: Avoid rounding down the inactive scan target
2020-10-02 19:16:06 +00:00
vm_pageout.h
Add interruptible variant of vm_wait(9), vm_wait_intr(9).
2020-09-08 23:28:09 +00:00
vm_pagequeue.h
vm_phys: Try to clean up NUMA KPIs
2020-11-19 03:59:21 +00:00
vm_pager.c
Make MAXPHYS tunable. Bump MAXPHYS to 1M.
2020-11-28 12:12:51 +00:00
vm_pager.h
Make MAXPHYS tunable. Bump MAXPHYS to 1M.
2020-11-28 12:12:51 +00:00
vm_param.h
(fault 3/9) Move map relookup into a dedicated function.
2020-01-23 05:07:01 +00:00
vm_phys.c
vm_phys: Try to clean up NUMA KPIs
2020-11-19 03:59:21 +00:00
vm_phys.h
vm_phys: Try to clean up NUMA KPIs
2020-11-19 03:59:21 +00:00
vm_radix.c
vm: clean up empty lines in .c and .h files
2020-09-01 21:20:45 +00:00
vm_radix.h
Use SMR to provide a safe unlocked lookup for vm_radix.
2020-02-19 19:58:31 +00:00
vm_reserv.c
vm_phys: Try to clean up NUMA KPIs
2020-11-19 03:59:21 +00:00
vm_reserv.h
Fix locking in vm_reserv_reclaim_contig().
2019-11-22 16:28:52 +00:00
vm_swapout_dummy.c
…
vm_swapout.c
Use a single VM object for kernel stacks.
2020-04-26 20:08:57 +00:00
vm_unix.c
Prepare to handle non-trivial errors from vm_map_delete().
2020-09-09 21:34:31 +00:00
vm.h
vm: clean up empty lines in .c and .h files
2020-09-01 21:20:45 +00:00
vnode_pager.c
Make MAXPHYS tunable. Bump MAXPHYS to 1M.
2020-11-28 12:12:51 +00:00
vnode_pager.h
vm pager: writemapping accounting for OBJT_SWAP
2019-09-03 20:31:48 +00:00