linux/arch/sparc/mm
Andreas Larsson 66d0f7ec9f sparc32: destroy_context() and switch_mm() needs to disable interrupts.
Load balancing can be triggered in the critical sections protected by
srmmu_context_spinlock in destroy_context() and switch_mm() and can hang
the cpu waiting for the rq lock of another cpu that in turn has called
switch_mm hangning on srmmu_context_spinlock leading to deadlock.

So, disable interrupt while taking srmmu_context_spinlock in
destroy_context() and switch_mm() so we don't deadlock.

See also commit 77b838fa1e ("[SPARC64]: destroy_context() needs to disable
interrupts.")

Signed-off-by: Andreas Larsson <andreas@gaisler.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-12-18 12:47:54 -05:00
..
Makefile sparc32: introduce run-time patching of srmmu access functions 2012-05-27 23:52:49 -07:00
extable.c sparc: Add module.h to files previously implicitly using it. 2011-10-31 19:30:54 -04:00
fault_32.c sparc32: fix sparse warnings in unaligned_32.c 2014-04-29 01:12:26 -04:00
fault_64.c sparc64: sun4v TLB error power off events 2014-09-16 17:46:44 -07:00
gup.c sparc64: Implement __get_user_pages_fast(). 2014-10-24 09:59:02 -07:00
highmem.c sparc32: move kmap_init() to highmem.c 2012-07-26 16:46:17 -07:00
hugetlbpage.c hugetlb: restrict hugepage_migration_support() to x86_64 2014-06-04 16:53:51 -07:00
hypersparc.S [PATCH] sparc32: vm_area_struct access for old Sun SPARCs. 2013-07-10 13:56:10 -07:00
init_32.c sparc32: fix sparse warning in devices.c 2014-04-29 01:12:26 -04:00
init_64.c mm/debug-pagealloc: make debug-pagealloc boottime configurable 2014-12-13 12:42:48 -08:00
init_64.h sparc64: Use kernel page tables for vmemmap. 2014-10-05 16:53:39 -07:00
io-unit.c sparc32: fix sparse warning in io-unit.c 2014-05-18 19:01:26 -07:00
iommu.c sparc32: fix sparse warning in iommu.c 2014-05-18 19:01:26 -07:00
leon_mm.c sparc32: fix sparse "Should it be static?" in mm/ 2014-04-29 01:12:25 -04:00
mm_32.h sparc32: fix sparse "Should it be static?" in mm/ 2014-04-29 01:12:25 -04:00
srmmu.c sparc32: destroy_context() and switch_mm() needs to disable interrupts. 2014-12-18 12:47:54 -05:00
srmmu_access.S sparc32: introduce run-time patching of srmmu access functions 2012-05-27 23:52:49 -07:00
swift.S [PATCH] sparc32: vm_area_struct access for old Sun SPARCs. 2013-07-10 13:56:10 -07:00
tlb.c sparc: Replace __get_cpu_var uses 2014-08-26 13:45:55 -04:00
tsb.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-next 2014-06-19 07:50:07 -10:00
tsunami.S [PATCH] sparc32: vm_area_struct access for old Sun SPARCs. 2013-07-10 13:56:10 -07:00
ultra.S sparc64: Make PAGE_OFFSET variable. 2013-11-12 15:22:34 -08:00
viking.S [PATCH] sparc32: vm_area_struct access for old Sun SPARCs. 2013-07-10 13:56:10 -07:00