diff options
author | 2016-04-11 10:41:07 +0300 | |
---|---|---|
committer | 2016-04-13 08:17:18 +0300 | |
commit | e09b41010ba33a20a87472ee821fa407a5b8da36 (patch) | |
tree | d10dc367189862e7ca5c592f033dc3726e1df4e3 /kernel/mm/vmalloc.c | |
parent | f93b97fd65072de626c074dbe099a1fff05ce060 (diff) |
These changes are the raw update to linux-4.4.6-rt14. Kernel sources
are taken from kernel.org, and rt patch from the rt wiki download page.
During the rebasing, the following patch collided:
Force tick interrupt and get rid of softirq magic(I70131fb85).
Collisions have been removed because its logic was found on the
source already.
Change-Id: I7f57a4081d9deaa0d9ccfc41a6c8daccdee3b769
Signed-off-by: José Pekkarinen <jose.pekkarinen@nokia.com>
Diffstat (limited to 'kernel/mm/vmalloc.c')
-rw-r--r-- | kernel/mm/vmalloc.c | 68 |
1 files changed, 11 insertions, 57 deletions
diff --git a/kernel/mm/vmalloc.c b/kernel/mm/vmalloc.c index f87a29f1e..68740314a 100644 --- a/kernel/mm/vmalloc.c +++ b/kernel/mm/vmalloc.c @@ -35,6 +35,8 @@ #include <asm/tlbflush.h> #include <asm/shmparam.h> +#include "internal.h" + struct vfree_deferred { struct llist_head list; struct work_struct wq; @@ -358,7 +360,7 @@ static struct vmap_area *alloc_vmap_area(unsigned long size, struct vmap_area *first; BUG_ON(!size); - BUG_ON(size & ~PAGE_MASK); + BUG_ON(offset_in_page(size)); BUG_ON(!is_power_of_2(align)); va = kmalloc_node(sizeof(struct vmap_area), @@ -938,7 +940,7 @@ static void *vb_alloc(unsigned long size, gfp_t gfp_mask) unsigned int order; int cpu; - BUG_ON(size & ~PAGE_MASK); + BUG_ON(offset_in_page(size)); BUG_ON(size > PAGE_SIZE*VMAP_MAX_ALLOC); if (WARN_ON(size == 0)) { /* @@ -992,7 +994,7 @@ static void vb_free(const void *addr, unsigned long size) unsigned int order; struct vmap_block *vb; - BUG_ON(size & ~PAGE_MASK); + BUG_ON(offset_in_page(size)); BUG_ON(size > PAGE_SIZE*VMAP_MAX_ALLOC); flush_cache_vunmap((unsigned long)addr, (unsigned long)addr + size); @@ -1444,7 +1446,6 @@ struct vm_struct *remove_vm_area(const void *addr) vmap_debug_free_range(va->va_start, va->va_end); kasan_free_shadow(vm); free_unmap_vmap_area(va); - vm->size -= PAGE_SIZE; return vm; } @@ -1469,8 +1470,8 @@ static void __vunmap(const void *addr, int deallocate_pages) return; } - debug_check_no_locks_freed(addr, area->size); - debug_check_no_obj_freed(addr, area->size); + debug_check_no_locks_freed(addr, get_vm_area_size(area)); + debug_check_no_obj_freed(addr, get_vm_area_size(area)); if (deallocate_pages) { int i; @@ -1620,7 +1621,7 @@ static void *__vmalloc_area_node(struct vm_struct *area, gfp_t gfp_mask, goto fail; } area->pages[i] = page; - if (gfp_mask & __GFP_WAIT) + if (gfpflags_allow_blocking(gfp_mask)) cond_resched(); } @@ -1905,7 +1906,7 @@ static int aligned_vread(char *buf, char *addr, unsigned long count) while (count) { unsigned long offset, length; - offset = (unsigned long)addr & ~PAGE_MASK; + offset = offset_in_page(addr); length = PAGE_SIZE - offset; if (length > count) length = count; @@ -1944,7 +1945,7 @@ static int aligned_vwrite(char *buf, char *addr, unsigned long count) while (count) { unsigned long offset, length; - offset = (unsigned long)addr & ~PAGE_MASK; + offset = offset_in_page(addr); length = PAGE_SIZE - offset; if (length > count) length = count; @@ -2395,7 +2396,7 @@ struct vm_struct **pcpu_get_vm_areas(const unsigned long *offsets, bool purged = false; /* verify parameters and allocate data structures */ - BUG_ON(align & ~PAGE_MASK || !is_power_of_2(align)); + BUG_ON(offset_in_page(align) || !is_power_of_2(align)); for (last_area = 0, area = 0; area < nr_vms; area++) { start = offsets[area]; end = start + sizes[area]; @@ -2691,52 +2692,5 @@ static int __init proc_vmalloc_init(void) } module_init(proc_vmalloc_init); -void get_vmalloc_info(struct vmalloc_info *vmi) -{ - struct vmap_area *va; - unsigned long free_area_size; - unsigned long prev_end; - - vmi->used = 0; - vmi->largest_chunk = 0; - - prev_end = VMALLOC_START; - - rcu_read_lock(); - - if (list_empty(&vmap_area_list)) { - vmi->largest_chunk = VMALLOC_TOTAL; - goto out; - } - - list_for_each_entry_rcu(va, &vmap_area_list, list) { - unsigned long addr = va->va_start; - - /* - * Some archs keep another range for modules in vmalloc space - */ - if (addr < VMALLOC_START) - continue; - if (addr >= VMALLOC_END) - break; - - if (va->flags & (VM_LAZY_FREE | VM_LAZY_FREEING)) - continue; - - vmi->used += (va->va_end - va->va_start); - - free_area_size = addr - prev_end; - if (vmi->largest_chunk < free_area_size) - vmi->largest_chunk = free_area_size; - - prev_end = va->va_end; - } - - if (VMALLOC_END - prev_end > vmi->largest_chunk) - vmi->largest_chunk = VMALLOC_END - prev_end; - -out: - rcu_read_unlock(); -} #endif |