From: Andi Kleen <ak@suse.de>
Date: Thu, 24 Jul 2008 04:27:45 +0000 (-0700)
Subject: mm: introduce non panic alloc_bootmem
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=b54bbf7b81170f03597c17dd0b559e3006bc9868;p=GitHub%2Fmt8127%2Fandroid_kernel_alcatel_ttab.git

mm: introduce non panic alloc_bootmem

Straight forward variant of the existing __alloc_bootmem_node, only
subsequent patch when allocating giant hugepages at boot -- don't want to
panic if we can't allocate as many as the user asked for.

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Nick Piggin <npiggin@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

diff --git a/include/linux/bootmem.h b/include/linux/bootmem.h
index dd8fee6c46d9..f352c5f125b4 100644
--- a/include/linux/bootmem.h
+++ b/include/linux/bootmem.h
@@ -89,6 +89,10 @@ extern void *__alloc_bootmem_node(pg_data_t *pgdat,
 				  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,
diff --git a/mm/bootmem.c b/mm/bootmem.c
index 4bc6ae2fbaa3..9ac972535fff 100644
--- a/mm/bootmem.c
+++ b/mm/bootmem.c
@@ -578,6 +578,18 @@ void * __init alloc_bootmem_section(unsigned long size,
 }
 #endif
 
+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