diff mbox series

[RFC,v3,1/3] vmalloc: export __vmalloc_node_range for CONFIG_TEST_VMALLOC_MODULE

Message ID 20190102085924.14145-2-urezki@gmail.com (mailing list archive)
State New, archived
Headers show
Series test driver to analyse vmalloc allocator | expand

Commit Message

Uladzislau Rezki Jan. 2, 2019, 8:59 a.m. UTC 
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.

Signed-off-by: Uladzislau Rezki (Sony) <urezki@gmail.com>
---
 mm/vmalloc.c | 9 +++++++++
 1 file changed, 9 insertions(+)
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Patch

diff --git a/mm/vmalloc.c b/mm/vmalloc.c
index cfea25be7754..1f24aecd1d7e 100644
--- a/mm/vmalloc.c
+++ b/mm/vmalloc.c
@@ -1764,6 +1764,15 @@  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