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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-ia64-devel] [patch 2/3] Allow architectures to specify the location of /proc/iomem
On some ia64 XEN it is neccessary to use an alternate location
for the iformation that is usually provided by /proc/iomem.
By having the path returned by a function, which can be
overriden on a per-architecture basis, it is possible for
ia64 XEN to make use of existing generic code. Hopefully other
achitectures can use this infastructure as the need arises.
Signed-off-by: Simon Horman <horms@xxxxxxxxxxxx>
Index: kexec-tools-unstable/kexec/arch/i386/crashdump-x86.c
===================================================================
--- kexec-tools-unstable.orig/kexec/arch/i386/crashdump-x86.c 2007-05-09
16:55:33.000000000 +0900
+++ kexec-tools-unstable/kexec/arch/i386/crashdump-x86.c 2007-05-09
16:55:42.000000000 +0900
@@ -59,7 +59,7 @@ static struct memory_range crash_reserve
*/
static int get_crash_memory_ranges(struct memory_range **range, int *ranges)
{
- const char iomem[]= "/proc/iomem";
+ const char *iomem = proc_iomem();
int memory_ranges = 0;
char line[MAX_LINE];
FILE *fp;
Index: kexec-tools-unstable/kexec/arch/i386/kexec-x86.c
===================================================================
--- kexec-tools-unstable.orig/kexec/arch/i386/kexec-x86.c 2007-05-09
16:55:33.000000000 +0900
+++ kexec-tools-unstable/kexec/arch/i386/kexec-x86.c 2007-05-09
16:55:42.000000000 +0900
@@ -39,7 +39,7 @@ static struct memory_range memory_range[
int get_memory_ranges(struct memory_range **range, int *ranges,
unsigned long kexec_flags)
{
- const char iomem[]= "/proc/iomem";
+ const char *iomem= proc_iomem();
int memory_ranges = 0;
char line[MAX_LINE];
FILE *fp;
Index: kexec-tools-unstable/kexec/arch/i386/x86-linux-setup.c
===================================================================
--- kexec-tools-unstable.orig/kexec/arch/i386/x86-linux-setup.c 2007-05-09
16:55:33.000000000 +0900
+++ kexec-tools-unstable/kexec/arch/i386/x86-linux-setup.c 2007-05-09
16:55:42.000000000 +0900
@@ -126,7 +126,7 @@ int setup_linux_vesafb(struct x86_linux_
real_mode->lfb_linelength = fix.line_length;
real_mode->vesapm_seg = 0;
- /* FIXME: better get size from /proc/iomem */
+ /* FIXME: better get size from the file returned by proc_iomem() */
real_mode->lfb_size = (fix.smem_len + 65535) / 65536;
real_mode->pages = (fix.smem_len + 4095) / 4096;
Index: kexec-tools-unstable/kexec/arch/ia64/crashdump-ia64.c
===================================================================
--- kexec-tools-unstable.orig/kexec/arch/ia64/crashdump-ia64.c 2007-05-09
16:55:33.000000000 +0900
+++ kexec-tools-unstable/kexec/arch/ia64/crashdump-ia64.c 2007-05-09
17:03:15.000000000 +0900
@@ -43,7 +43,8 @@ static struct crash_elf_info elf_info =
/* Stores a sorted list of RAM memory ranges for which to create elf headers.
* A separate program header is created for backup region.
* The number of entries in memory_range array is always smaller than
- * the number of entries in /proc/iomem, stored in max_memory_ranges. */
+ * the number of entries in the file returned by proc_iomem(),
+ * stored in max_memory_ranges. */
static struct memory_range *crash_memory_range;
/* Memory region reserved for storing panic kernel and other data. */
static struct memory_range crash_reserved_mem;
@@ -142,7 +143,7 @@ static int exclude_crash_reserve_region(
static int get_crash_memory_ranges(struct memory_range **range, int *ranges)
{
- const char iomem[]= "/proc/iomem";
+ const char *iomem = proc_iomem();
char line[MAX_LINE];
FILE *fp;
unsigned long start, end;
Index: kexec-tools-unstable/kexec/arch/ia64/kexec-elf-ia64.c
===================================================================
--- kexec-tools-unstable.orig/kexec/arch/ia64/kexec-elf-ia64.c 2007-05-09
16:55:33.000000000 +0900
+++ kexec-tools-unstable/kexec/arch/ia64/kexec-elf-ia64.c 2007-05-09
16:55:42.000000000 +0900
@@ -195,7 +195,7 @@ int elf_ia64_load(int argc, char **argv,
if (info->kexec_flags & KEXEC_ON_CRASH ) {
if ((mem_min == 0x00) && (mem_max == ULONG_MAX)) {
fprintf(stderr, "Failed to find crash kernel region "
- "in /proc/iomem\n");
+ "in %s\n", proc_iomem());
free_elf_info(&ehdr);
return -1;
}
Index: kexec-tools-unstable/kexec/arch/ia64/kexec-ia64.c
===================================================================
--- kexec-tools-unstable.orig/kexec/arch/ia64/kexec-ia64.c 2007-05-09
16:55:33.000000000 +0900
+++ kexec-tools-unstable/kexec/arch/ia64/kexec-ia64.c 2007-05-09
16:55:42.000000000 +0900
@@ -37,7 +37,8 @@
#include <arch/options.h>
/* The number of entries in memory_range array is always smaller than
- the number of entries in /proc/iomem, stored in max_memory_ranges. */
+ * the number of entries in the file returned by proc_iomem(),
+ * stored in max_memory_ranges. */
static struct memory_range *memory_range;
int max_memory_ranges;
static int memory_ranges;
@@ -79,7 +80,7 @@ static int split_range(int range, unsign
int get_memory_ranges(struct memory_range **range, int *ranges,
unsigned long kexec_flags)
{
- const char iomem[]= "/proc/iomem";
+ const char *iomem = proc_iomem();
char line[MAX_LINE];
FILE *fp;
fp = fopen(iomem, "r");
Index: kexec-tools-unstable/kexec/arch/ppc/kexec-ppc.c
===================================================================
--- kexec-tools-unstable.orig/kexec/arch/ppc/kexec-ppc.c 2007-05-09
16:55:32.000000000 +0900
+++ kexec-tools-unstable/kexec/arch/ppc/kexec-ppc.c 2007-05-09
16:55:42.000000000 +0900
@@ -34,7 +34,7 @@ int get_memory_ranges(struct memory_rang
memory_ranges++;
#else
#error Please, fix this for your platform
- const char iomem[] = "/proc/iomem";
+ const char *iomem = proc_iomem();
char line[MAX_LINE];
FILE *fp;
unsigned long long start, end;
Index: kexec-tools-unstable/kexec/arch/s390/kexec-s390.c
===================================================================
--- kexec-tools-unstable.orig/kexec/arch/s390/kexec-s390.c 2007-05-09
16:55:33.000000000 +0900
+++ kexec-tools-unstable/kexec/arch/s390/kexec-s390.c 2007-05-09
16:55:42.000000000 +0900
@@ -25,7 +25,8 @@ static struct memory_range memory_range[
/*
* get_memory_ranges:
- * Return a list of memory ranges by parsing /proc/iomem
+ * Return a list of memory ranges by parsing the file returned by
+ * proc_iomem()
*
* INPUT:
* - Pointer to an array of memory_range structures.
@@ -39,7 +40,7 @@ static struct memory_range memory_range[
int get_memory_ranges(struct memory_range **range, int *ranges, unsigned long
flags)
{
char sys_ram[] = "System RAM\n";
- char iomem[] = "/proc/iomem";
+ char *iomem = proc_iomem();
FILE *fp;
char line[80];
int current_range = 0;
Index: kexec-tools-unstable/kexec/arch/x86_64/crashdump-x86_64.c
===================================================================
--- kexec-tools-unstable.orig/kexec/arch/x86_64/crashdump-x86_64.c
2007-05-09 16:55:33.000000000 +0900
+++ kexec-tools-unstable/kexec/arch/x86_64/crashdump-x86_64.c 2007-05-09
16:55:42.000000000 +0900
@@ -52,8 +52,8 @@ static int exclude_crash_reserve_region(
#define KERN_VADDR_ALIGN 0x100000 /* 1MB */
-/* Read kernel physical load addr from /proc/iomem (Kernel Code) and
- * store in kexec_info */
+/* Read kernel physical load addr from the file returned by proc_iomem()
+ * (Kernel Code) and store in kexec_info */
static int get_kernel_paddr(struct kexec_info *info)
{
uint64_t start;
@@ -164,7 +164,7 @@ static struct memory_range crash_reserve
*/
static int get_crash_memory_ranges(struct memory_range **range, int *ranges)
{
- const char iomem[]= "/proc/iomem";
+ const char *iomem= proc_iomem();
int memory_ranges = 0;
char line[MAX_LINE];
FILE *fp;
Index: kexec-tools-unstable/kexec/arch/x86_64/kexec-x86_64.c
===================================================================
--- kexec-tools-unstable.orig/kexec/arch/x86_64/kexec-x86_64.c 2007-05-09
16:55:33.000000000 +0900
+++ kexec-tools-unstable/kexec/arch/x86_64/kexec-x86_64.c 2007-05-09
16:55:42.000000000 +0900
@@ -40,7 +40,7 @@ static struct memory_range memory_range[
int get_memory_ranges(struct memory_range **range, int *ranges,
unsigned long kexec_flags)
{
- const char iomem[]= "/proc/iomem";
+ const char *iomem= proc_iomem();
int memory_ranges = 0;
char line[MAX_LINE];
FILE *fp;
Index: kexec-tools-unstable/kexec/kexec-iomem.c
===================================================================
--- kexec-tools-unstable.orig/kexec/kexec-iomem.c 2007-05-09
16:55:32.000000000 +0900
+++ kexec-tools-unstable/kexec/kexec-iomem.c 2007-05-09 17:02:19.000000000
+0900
@@ -15,8 +15,10 @@
/*
* kexec_iomem_for_each_line()
*
- * Iterate over each line in /proc/iomem. If match is NULL or if the line
- * matches with our match-pattern then call the callback if non-NULL.
+ * Iterate over each line in the file returned by proc_iomem(). If match is
+ * NULL or if the line matches with our match-pattern then call the
+ * callback if non-NULL.
+ *
* Return the number of lines matched.
*/
@@ -28,7 +30,7 @@ int kexec_iomem_for_each_line(char *matc
unsigned long length),
void *data)
{
- const char iomem[]= "/proc/iomem";
+ const char *iomem = proc_iomem();
char line[MAX_LINE];
FILE *fp;
unsigned long long start, end, size;
@@ -39,7 +41,7 @@ int kexec_iomem_for_each_line(char *matc
fp = fopen(iomem, "r");
if (!fp)
- die("Cannot open /proc/iomem");
+ die("Cannot open %s\n", iomem);
while(fgets(line, sizeof(line), fp) != 0) {
count = sscanf(line, "%Lx-%Lx : %n", &start, &end, &consumed);
@@ -99,3 +101,16 @@ int parse_iomem_single(char *str, uint64
return ret;
}
+
+static const char proc_iomem_str[]= "/proc/iomem";
+
+/*
+ * Allow an architecture specific implementation of this
+ * function to override the location of a file looking a lot
+ * like /proc/iomem
+ */
+const char * __attribute__((weak)) proc_iomem(void)
+{
+ return proc_iomem_str;
+}
+
Index: kexec-tools-unstable/kexec/kexec.h
===================================================================
--- kexec-tools-unstable.orig/kexec/kexec.h 2007-05-09 16:55:32.000000000
+0900
+++ kexec-tools-unstable/kexec/kexec.h 2007-05-09 17:02:16.000000000 +0900
@@ -213,7 +213,7 @@ int kexec_iomem_for_each_line(char *matc
unsigned long length),
void *data);
int parse_iomem_single(char *str, uint64_t *start, uint64_t *end);
-
+const char * proc_iomem(void);
#define MAX_LINE 160
--
--
Horms
H: http://www.vergenet.net/~horms/
W: http://www.valinux.co.jp/en/
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