linux-kernel - [PATCH] [8/18] Add a __alloc_bootmem_node

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Message-Id: <20080317015821.F18431B41E0@basil.firstfloor.org>
Date:	Mon, 17 Mar 2008 02:58:21 +0100 (CET)
From:	Andi Kleen <andi@...stfloor.org>
To:	linux-kernel@...r.kernel.org, pj@....com, linux-mm@...ck.org,
	nickpiggin@...oo.com.au
Subject: [PATCH] [8/18] Add a __alloc_bootmem_node_nopanic


Straight forward variant of the existing __alloc_bootmem_node, only 
Signed-off-by: Andi Kleen <ak@...e.de>

difference is that it doesn't panic on failure

Signed-off-by: Andi Kleen <ak@...e.de>
---
 include/linux/bootmem.h |    4 ++++
 mm/bootmem.c            |   12 ++++++++++++
 2 files changed, 16 insertions(+)

Index: linux/mm/bootmem.c
===================================================================
--- linux.orig/mm/bootmem.c
+++ linux/mm/bootmem.c
@@ -471,6 +471,18 @@ void * __init __alloc_bootmem_node(pg_da
 	return __alloc_bootmem(size, align, goal);
 }
 
+void * __init __alloc_bootmem_node_nopanic(pg_data_t *pgdat, unsigned long size,
+				   unsigned long align, unsigned long goal)
+{
+	void *ptr;
+
+	ptr = __alloc_bootmem_core(pgdat->bdata, size, align, goal, 0);
+	if (ptr)
+		return ptr;
+
+	return __alloc_bootmem_nopanic(size, align, goal);
+}
+
 #ifndef ARCH_LOW_ADDRESS_LIMIT
 #define ARCH_LOW_ADDRESS_LIMIT	0xffffffffUL
 #endif
Index: linux/include/linux/bootmem.h
===================================================================
--- linux.orig/include/linux/bootmem.h
+++ linux/include/linux/bootmem.h
@@ -90,6 +90,10 @@ extern void *__alloc_bootmem_node(pg_dat
 				  unsigned long size,
 				  unsigned long align,
 				  unsigned long goal);
+extern void *__alloc_bootmem_node_nopanic(pg_data_t *pgdat,
+				  unsigned long size,
+				  unsigned long align,
+				  unsigned long goal);
 extern unsigned long init_bootmem_node(pg_data_t *pgdat,
 				       unsigned long freepfn,
 				       unsigned long startpfn,
--
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