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authorSamuel Thibault <samuel.thibault@ens-lyon.org>2011-04-20 23:35:42 +0200
committerSamuel Thibault <samuel.thibault@ens-lyon.org>2011-04-20 23:40:16 +0200
commit67d4e8403fe12592f99cf6fc51e4f33684899d6b (patch)
treec4f8ed13d12ab04e067d396dd3c39b6afeadeb1a /ipc
parenta44f51203c43bb4306a225506075740cdacaccfa (diff)
Warn once when part of the kernel is lacking memory
* kern/printf.h (printf_once): New macro. * ipc/mach_port.c (mach_port_names, mach_port_get_set_status): Warn when returning KERN_RESOURCE_SHORTAGE. * vm/vm_kern.c: Include printf.h. (kmem_alloc, kmem_realloc, kmem_alloc_wired, kmem_alloc_aligned, kmem_alloc_pageable): Warn when failing. * vm/vm_resident.c (vm_page_grab_contiguous_pages): Warn when returning KERN_RESOURCE_SHORTAGE.
Diffstat (limited to 'ipc')
-rw-r--r--ipc/mach_port.c9
1 files changed, 7 insertions, 2 deletions
diff --git a/ipc/mach_port.c b/ipc/mach_port.c
index 122d5d9..904fd14 100644
--- a/ipc/mach_port.c
+++ b/ipc/mach_port.c
@@ -205,11 +205,14 @@ mach_port_names(
size = size_needed;
kr = vm_allocate(ipc_kernel_map, &addr1, size, TRUE);
- if (kr != KERN_SUCCESS)
+ if (kr != KERN_SUCCESS) {
+ printf_once("no more room in ipc_kernel_map\n");
return KERN_RESOURCE_SHORTAGE;
+ }
kr = vm_allocate(ipc_kernel_map, &addr2, size, TRUE);
if (kr != KERN_SUCCESS) {
+ printf_once("no more room in ipc_kernel_map\n");
kmem_free(ipc_kernel_map, addr1, size);
return KERN_RESOURCE_SHORTAGE;
}
@@ -982,8 +985,10 @@ mach_port_get_set_status(
ipc_pset_t pset;
kr = vm_allocate(ipc_kernel_map, &addr, size, TRUE);
- if (kr != KERN_SUCCESS)
+ if (kr != KERN_SUCCESS) {
+ printf_once("no more room in ipc_kernel_map\n");
return KERN_RESOURCE_SHORTAGE;
+ }
/* can't fault while we hold locks */