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[kernel] crashlog: fix dependency, add memblock support

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git-svn-id: svn://svn.openwrt.org/openwrt/trunk@32787 3c298f89-4303-0410-b956-a3cf2f4a3e73
This commit is contained in:
nbd 2012-07-22 16:39:33 +00:00
parent 5db9b498de
commit bd4fb35eed
1 changed files with 50 additions and 7 deletions
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57
target/linux/generic/patches-3.3/930-crashlog.patch
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@ -1,13 +1,18 @@
--- /dev/null
+++ b/include/linux/crashlog.h
@@ -0,0 +1,12 @@
@@ -0,0 +1,17 @@
+#ifndef __CRASHLOG_H
+#define __CRASHLOG_H
+
+#ifdef CONFIG_CRASHLOG
+void __init crashlog_init_mem(struct bootmem_data *bdata);
+void __init crashlog_init_bootmem(struct bootmem_data *bdata);
+void __init crashlog_init_memblock(phys_addr_t addr, phys_addr_t size);
+#else
+static inline void crashlog_init_mem(struct bootmem_data *bdata)
+static inline void crashlog_init_bootmem(struct bootmem_data *bdata)
+{
+}
+
+static inline void crashlog_init_memblock(phys_addr_t addr, phys_addr_t size)
+{
+}
+#endif
@ -21,7 +26,7 @@
+config CRASHLOG
+ bool "Crash logging"
+ depends on !NO_BOOTMEM && !HAVE_MEMBLOCK
+ depends on !NO_BOOTMEM || HAVE_MEMBLOCK
+
config BLK_DEV_INITRD
bool "Initial RAM filesystem and RAM disk (initramfs/initrd) support"
@ -38,7 +43,7 @@
--- /dev/null
+++ b/kernel/crashlog.c
@@ -0,0 +1,171 @@
@@ -0,0 +1,190 @@
+/*
+ * Crash information logger
+ * Copyright (C) 2010 Felix Fietkau <nbd@openwrt.org>
@ -64,6 +69,7 @@
+
+#include <linux/module.h>
+#include <linux/bootmem.h>
+#include <linux/memblock.h>
+#include <linux/debugfs.h>
+#include <linux/crashlog.h>
+#include <linux/kmsg_dump.h>
@ -96,7 +102,8 @@
+
+extern struct list_head *crashlog_modules;
+
+void __init crashlog_init_mem(bootmem_data_t *bdata)
+#ifndef CONFIG_NO_BOOTMEM
+void __init crashlog_init_bootmem(bootmem_data_t *bdata)
+{
+ unsigned long addr;
+
@ -111,6 +118,23 @@
+ }
+ crashlog_addr = addr;
+}
+#endif
+
+#ifdef CONFIG_HAVE_MEMBLOCK
+void __init crashlog_init_memblock(phys_addr_t addr, phys_addr_t size)
+{
+ if (crashlog_addr)
+ return;
+
+ addr += size - CRASHLOG_OFFSET;
+ if (memblock_reserve(addr, CRASHLOG_SIZE)) {
+ printk("Crashlog failed to allocate RAM at address 0x%lx\n", (unsigned long) addr);
+ return;
+ }
+
+ crashlog_addr = addr;
+}
+#endif
+
+static void __init crashlog_copy(void)
+{
@ -224,7 +248,7 @@
if (!bdata->node_bootmem_map)
return 0;
+ crashlog_init_mem(bdata);
+ crashlog_init_bootmem(bdata);
start = bdata->node_min_pfn;
end = bdata->node_low_pfn;
@ -240,3 +264,22 @@
/* Block module loading/unloading? */
--- a/mm/memblock.c
+++ b/mm/memblock.c
@@ -19,6 +19,7 @@
#include <linux/debugfs.h>
#include <linux/seq_file.h>
#include <linux/memblock.h>
+#include <linux/crashlog.h>
static struct memblock_region memblock_memory_init_regions[INIT_MEMBLOCK_REGIONS] __initdata_memblock;
static struct memblock_region memblock_reserved_init_regions[INIT_MEMBLOCK_REGIONS] __initdata_memblock;
@@ -305,6 +306,8 @@ static void __init_memblock memblock_ins
memblock_set_region_node(rgn, nid);
type->cnt++;
type->total_size += size;
+ if (type == &memblock.memory && idx == 0)
+ crashlog_init_memblock(base, size);
}
/**