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mm/vmalloc: extend find_vmap_lowest_match_check with extra arguments

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find_vmap_lowest_match() is now able to handle different roots.  With
DEBUG_AUGMENT_LOWEST_MATCH_CHECK enabled as:

: --- a/mm/vmalloc.c
: +++ b/mm/vmalloc.c
: @@ -713,7 +713,7 @@ EXPORT_SYMBOL(vmalloc_to_pfn);
: /*** Global kva allocator ***/
: 
: -#define DEBUG_AUGMENT_LOWEST_MATCH_CHECK 0
: +#define DEBUG_AUGMENT_LOWEST_MATCH_CHECK 1

compilation failed as:

mm/vmalloc.c: In function 'find_vmap_lowest_match_check':
mm/vmalloc.c:1328:32: warning: passing argument 1 of 'find_vmap_lowest_match' makes pointer from integer without a cast [-Wint-conversion]
1328 |  va_1 = find_vmap_lowest_match(size, align, vstart, false);
     |                                ^~~~
     |                                |
     |                                long unsigned int
mm/vmalloc.c:1236:40: note: expected 'struct rb_root *' but argument is of type 'long unsigned int'
1236 | find_vmap_lowest_match(struct rb_root *root, unsigned long size,
     |                        ~~~~~~~~~~~~~~~~^~~~
mm/vmalloc.c:1328:9: error: too few arguments to function 'find_vmap_lowest_match'
1328 |  va_1 = find_vmap_lowest_match(size, align, vstart, false);
     |         ^~~~~~~~~~~~~~~~~~~~~~
mm/vmalloc.c:1236:1: note: declared here
1236 | find_vmap_lowest_match(struct rb_root *root, unsigned long size,
     | ^~~~~~~~~~~~~~~~~~~~~~

Extend find_vmap_lowest_match_check() and find_vmap_lowest_linear_match()
with extra arguments to fix this.

Link: https://lkml.kernel.org/r/20220906060548.1127396-1-song@kernel.org
Link: https://lkml.kernel.org/r/20220831052734.3423079-1-song@kernel.org
Fixes: f9863be493 ("mm/vmalloc: extend __alloc_vmap_area() with extra arguments")
Signed-off-by: Song Liu <song@kernel.org>
Reviewed-by: Baoquan He <bhe@redhat.com>
Reviewed-by: Uladzislau Rezki (Sony) <urezki@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Song Liu 2022-08-30 22:27:34 -07:00 committed by Andrew Morton
parent 0742e49026
commit bd1264c37c
1 changed files with 7 additions and 6 deletions
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13
mm/vmalloc.c
View file

@ -1300,12 +1300,12 @@ find_vmap_lowest_match(struct rb_root *root, unsigned long size,
#include <linux/random.h>
static struct vmap_area *
find_vmap_lowest_linear_match(unsigned long size,
find_vmap_lowest_linear_match(struct list_head *head, unsigned long size,
unsigned long align, unsigned long vstart)
{
struct vmap_area *va;
list_for_each_entry(va, &free_vmap_area_list, list) {
list_for_each_entry(va, head, list) {
if (!is_within_this_va(va, size, align, vstart))
continue;
@ -1316,7 +1316,8 @@ find_vmap_lowest_linear_match(unsigned long size,
}
static void
find_vmap_lowest_match_check(unsigned long size, unsigned long align)
find_vmap_lowest_match_check(struct rb_root *root, struct list_head *head,
unsigned long size, unsigned long align)
{
struct vmap_area *va_1, *va_2;
unsigned long vstart;
@ -1325,8 +1326,8 @@ find_vmap_lowest_match_check(unsigned long size, unsigned long align)
get_random_bytes(&rnd, sizeof(rnd));
vstart = VMALLOC_START + rnd;
va_1 = find_vmap_lowest_match(size, align, vstart, false);
va_2 = find_vmap_lowest_linear_match(size, align, vstart);
va_1 = find_vmap_lowest_match(root, size, align, vstart, false);
va_2 = find_vmap_lowest_linear_match(head, size, align, vstart);
if (va_1 != va_2)
pr_emerg("not lowest: t: 0x%p, l: 0x%p, v: 0x%lx\n",
@ -1513,7 +1514,7 @@ __alloc_vmap_area(struct rb_root *root, struct list_head *head,
return vend;
#if DEBUG_AUGMENT_LOWEST_MATCH_CHECK
find_vmap_lowest_match_check(size, align);
find_vmap_lowest_match_check(root, head, size, align);
#endif
return nva_start_addr;