diff options
| author | Richard Braun <rbraun@sceen.net> | 2012-07-07 08:10:04 +0000 |
|---|---|---|
| committer | Richard Braun <rbraun@sceen.net> | 2012-07-07 08:10:04 +0000 |
| commit | 43d2ad0d2043a278a2772519013f25a0bc4b067f (patch) | |
| tree | 7f146c960d883c1355dacd41d5c330fb67644928 | |
| parent | 2d2da4aad582bf1d63554cd9496285787db3e66e (diff) | |
Allocate kernel thread stacks out of kmem_map
The kernel submaps eat most of the available kernel space. Using the
main kernel map for thread stacks sometimes lead to exhaustion when many
threads are created. Use kmem_map instead to increase this limit.
* kern/thread.c (stack_alloc): Use kmem_map instead of kernel_map for
stack allocation.
(stack_collect): Likewise for release.
| -rw-r--r-- | kern/thread.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/kern/thread.c b/kern/thread.c index 27faf43..d279bc8 100644 --- a/kern/thread.c +++ b/kern/thread.c @@ -208,7 +208,7 @@ void stack_alloc( * addresses of a stack given an address in the middle. */ - if (kmem_alloc_aligned(kernel_map, &stack, KERNEL_STACK_SIZE) + if (kmem_alloc_aligned(kmem_map, &stack, KERNEL_STACK_SIZE) != KERN_SUCCESS) panic("stack_alloc"); @@ -268,7 +268,7 @@ void stack_collect(void) #if MACH_DEBUG stack_finalize(stack); #endif /* MACH_DEBUG */ - kmem_free(kernel_map, stack, KERNEL_STACK_SIZE); + kmem_free(kmem_map, stack, KERNEL_STACK_SIZE); s = splsched(); stack_lock(); |