From: Bernhard Walle <bwalle@suse.de>
Date: Sun, 8 Jun 2008 13:46:30 +0000 (+0200)
Subject: x86: add flags parameter to reserve_bootmem_generic()
X-Git-Tag: v2.6.27-rc1~1106^2~247^2~28
X-Git-Url: http://pilppa.com/gitweb/?a=commitdiff_plain;h=8b2ef1d7285740953a2c4ef7faf15fdfc5e2f358;p=linux-2.6-omap-h63xx.git

x86: add flags parameter to reserve_bootmem_generic()

This patch adds a 'flags' parameter to reserve_bootmem_generic() like it
already has been added in reserve_bootmem() with commit
72a7fe3967dbf86cb34e24fbf1d957fe24d2f246.

It also changes all users to use BOOTMEM_DEFAULT, which doesn't effectively
change the behaviour. Since the change is x86-specific, I don't think it's
necessary to add a new API for migration. There are only 4 users of that
function.

The change is necessary for the next patch, using reserve_bootmem_generic()
for crashkernel reservation.

Signed-off-by: Bernhard Walle <bwalle@suse.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---

diff --git a/arch/x86/kernel/mpparse.c b/arch/x86/kernel/mpparse.c
index 1cc7a4b8643..6ae60909b60 100644
--- a/arch/x86/kernel/mpparse.c
+++ b/arch/x86/kernel/mpparse.c
@@ -880,10 +880,11 @@ static int __init smp_scan_config(unsigned long base, unsigned long length,
 			if (!reserve)
 				return 1;
 
-			reserve_bootmem_generic(virt_to_phys(mpf), PAGE_SIZE);
+			reserve_bootmem_generic(virt_to_phys(mpf), PAGE_SIZE,
+				BOOTMEM_DEFAULT);
 			if (mpf->mpf_physptr)
 				reserve_bootmem_generic(mpf->mpf_physptr,
-							PAGE_SIZE);
+					PAGE_SIZE, BOOTMEM_DEFAULT);
 #endif
 		return 1;
 		}
diff --git a/arch/x86/mm/init_64.c b/arch/x86/mm/init_64.c
index 819dad973b1..bf7bf1de6c2 100644
--- a/arch/x86/mm/init_64.c
+++ b/arch/x86/mm/init_64.c
@@ -799,12 +799,13 @@ void free_initrd_mem(unsigned long start, unsigned long end)
 }
 #endif
 
-void __init reserve_bootmem_generic(unsigned long phys, unsigned len)
+int __init reserve_bootmem_generic(unsigned long phys, unsigned len, int flags)
 {
 #ifdef CONFIG_NUMA
 	int nid, next_nid;
 #endif
 	unsigned long pfn = phys >> PAGE_SHIFT;
+	int ret;
 
 	if (pfn >= end_pfn) {
 		/*
@@ -812,11 +813,11 @@ void __init reserve_bootmem_generic(unsigned long phys, unsigned len)
 		 * firmware tables:
 		 */
 		if (pfn < max_pfn_mapped)
-			return;
+			return -EFAULT;
 
 		printk(KERN_ERR "reserve_bootmem: illegal reserve %lx %u\n",
 				phys, len);
-		return;
+		return -EFAULT;
 	}
 
 	/* Should check here against the e820 map to avoid double free */
@@ -824,9 +825,13 @@ void __init reserve_bootmem_generic(unsigned long phys, unsigned len)
 	nid = phys_to_nid(phys);
 	next_nid = phys_to_nid(phys + len - 1);
 	if (nid == next_nid)
-		reserve_bootmem_node(NODE_DATA(nid), phys, len, BOOTMEM_DEFAULT);
+		ret = reserve_bootmem_node(NODE_DATA(nid), phys, len, flags);
 	else
-		reserve_bootmem(phys, len, BOOTMEM_DEFAULT);
+		ret = reserve_bootmem(phys, len, flags);
+
+	if (ret != 0)
+		return ret;
+
 #else
 	reserve_bootmem(phys, len, BOOTMEM_DEFAULT);
 #endif
@@ -835,6 +840,8 @@ void __init reserve_bootmem_generic(unsigned long phys, unsigned len)
 		dma_reserve += len / PAGE_SIZE;
 		set_dma_reserve(dma_reserve);
 	}
+
+	return 0;
 }
 
 int kern_addr_valid(unsigned long addr)
diff --git a/include/asm-x86/proto.h b/include/asm-x86/proto.h
index 6c8b41b03f6..a9f51472521 100644
--- a/include/asm-x86/proto.h
+++ b/include/asm-x86/proto.h
@@ -14,7 +14,7 @@ extern void ia32_syscall(void);
 extern void ia32_cstar_target(void);
 extern void ia32_sysenter_target(void);
 
-extern void reserve_bootmem_generic(unsigned long phys, unsigned len);
+extern int reserve_bootmem_generic(unsigned long phys, unsigned len, int flags);
 
 extern void syscall32_cpu_init(void);