From 62a8bd6c9246c0e1f19dfb8fc65ad7c4f7cac8bb Mon Sep 17 00:00:00 2001
From: Milton Miller <miltonm@bga.com>
Date: Wed, 22 Oct 2008 15:39:04 -0500
Subject: [PATCH] powerpc: Use is_kdump_kernel()
linux/crash_dump.h defines is_kdump_kernel() to be used by code that
needs to know if the previous kernel crashed instead of a (clean) boot
or reboot.
This updates the just added powerpc code to use it. This is needed
for the next commit, which will remove __kdump_flag.
Signed-off-by: Milton Miller <miltonm@bga.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
---
arch/powerpc/include/asm/kdump.h | 2 --
arch/powerpc/kernel/iommu.c | 3 ++-
arch/powerpc/platforms/cell/ras.c | 6 +++---
arch/powerpc/platforms/pseries/iommu.c | 4 ++--
4 files changed, 7 insertions(+), 8 deletions(-)
diff --git a/arch/powerpc/include/asm/kdump.h b/arch/powerpc/include/asm/kdump.h
index 821ed48c10edbb..b07ebb9784d365 100644
--- a/arch/powerpc/include/asm/kdump.h
+++ b/arch/powerpc/include/asm/kdump.h
@@ -20,8 +20,6 @@
#ifndef __ASSEMBLY__
-extern unsigned long __kdump_flag;
-
#if defined(CONFIG_CRASH_DUMP) && !defined(CONFIG_RELOCATABLE)
extern void reserve_kdump_trampoline(void);
extern void setup_kdump_trampoline(void);
diff --git a/arch/powerpc/kernel/iommu.c b/arch/powerpc/kernel/iommu.c
index 3857d7e2af0cab..45f47c97fd1400 100644
--- a/arch/powerpc/kernel/iommu.c
+++ b/arch/powerpc/kernel/iommu.c
@@ -32,6 +32,7 @@
#include <linux/dma-mapping.h>
#include <linux/bitops.h>
#include <linux/iommu-helper.h>
+#include <linux/crash_dump.h>
#include <asm/io.h>
#include <asm/prom.h>
#include <asm/iommu.h>
@@ -460,7 +461,7 @@ void iommu_unmap_sg(struct iommu_table *tbl, struct scatterlist *sglist,
static void iommu_table_clear(struct iommu_table *tbl)
{
- if (!__kdump_flag) {
+ if (!is_kdump_kernel()) {
/* Clear the table in case firmware left allocations in it */
ppc_md.tce_free(tbl, tbl->it_offset, tbl->it_size);
return;
diff --git a/arch/powerpc/platforms/cell/ras.c b/arch/powerpc/platforms/cell/ras.c
index 665af1c4195b87..fdf088f2430e8a 100644
--- a/arch/powerpc/platforms/cell/ras.c
+++ b/arch/powerpc/platforms/cell/ras.c
@@ -13,15 +13,15 @@
#include <linux/kernel.h>
#include <linux/smp.h>
#include <linux/reboot.h>
+#include <linux/kexec.h>
+#include <linux/crash_dump.h>
#include <asm/reg.h>
#include <asm/io.h>
#include <asm/prom.h>
-#include <asm/kexec.h>
#include <asm/machdep.h>
#include <asm/rtas.h>
#include <asm/cell-regs.h>
-#include <asm/kdump.h>
#include "ras.h"
@@ -112,7 +112,7 @@ static int __init cbe_ptcal_enable_on_node(int nid, int order)
int ret = -ENOMEM;
unsigned long addr;
- if (__kdump_flag)
+ if (is_kdump_kernel())
rtas_call(ptcal_stop_tok, 1, 1, NULL, nid);
area = kmalloc(sizeof(*area), GFP_KERNEL);
diff --git a/arch/powerpc/platforms/pseries/iommu.c b/arch/powerpc/platforms/pseries/iommu.c
index d56491d182d399..c90817acb47293 100644
--- a/arch/powerpc/platforms/pseries/iommu.c
+++ b/arch/powerpc/platforms/pseries/iommu.c
@@ -32,6 +32,7 @@
#include <linux/string.h>
#include <linux/pci.h>
#include <linux/dma-mapping.h>
+#include <linux/crash_dump.h>
#include <asm/io.h>
#include <asm/prom.h>
#include <asm/rtas.h>
@@ -44,7 +45,6 @@
#include <asm/tce.h>
#include <asm/ppc-pci.h>
#include <asm/udbg.h>
-#include <asm/kdump.h>
#include "plpar_wrappers.h"
@@ -292,7 +292,7 @@ static void iommu_table_setparms(struct pci_controller *phb,
tbl->it_base = (unsigned long)__va(*basep);
- if (!__kdump_flag)
+ if (!is_kdump_kernel())
memset((void *)tbl->it_base, 0, *sizep);
tbl->it_busno = phb->bus->number;
--
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