Commit 153178ed authored Mar 05, 2019 by Uladzislau Rezki (Sony) Committed by Linus Torvalds Mar 05, 2019

vmalloc: export __vmalloc_node_range for CONFIG_TEST_VMALLOC_MODULE

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/20190103142108.20744-2-urezki@gmail.com


Signed-off-by: Uladzislau Rezki (Sony) <urezki@gmail.com>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Shuah Khan <shuah@kernel.org>
Cc: Oleksiy Avramchenko <oleksiy.avramchenko@sonymobile.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

parent bc84c535

mm/vmalloc.c

+9 −0

Original line number	Diff line number	Diff line
		@@ -1774,6 +1774,15 @@ void *__vmalloc_node_range(unsigned long size, unsigned long align,
		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