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vmalloc: export __vmalloc_node_range for CONFIG_TEST_VMALLOC_MODULE

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Export __vmaloc_node_range() function if CONFIG_TEST_VMALLOC_MODULE is
enabled.  Some test cases in vmalloc test suite module require and make
use of that function.  Please note, that it is not supposed to be used
for other purposes.

We need it only for performance analysis, stressing and stability check
of vmalloc allocator.

Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Uladzislau Rezki (Sony) <[email protected]>
Reviewed-by: Andrew Morton <[email protected]>
Cc: Michal Hocko <[email protected]>
Cc: Kees Cook <[email protected]>
Cc: Matthew Wilcox <[email protected]>
Cc: Shuah Khan <[email protected]>
Cc: Oleksiy Avramchenko <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Uladzislau Rezki (Sony) 2019-03-05 15:43:30 -08:00 • committed by Linus Torvalds
commit 153178edc7
1 changed files with 9 additions and 0 deletions
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9
mm/vmalloc.c
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@ -1774,6 +1774,15 @@ fail:
return NULL;
}
/*
* This is only for performance analysis of vmalloc and stress purpose.
* It is required by vmalloc test module, therefore do not use it other
* than that.
*/
#ifdef CONFIG_TEST_VMALLOC_MODULE
EXPORT_SYMBOL_GPL(__vmalloc_node_range);
#endif
/**
* __vmalloc_node - allocate virtually contiguous memory
* @size: allocation size