/* vmcoreinfo stuff */
unsigned char vmcoreinfo_data[VMCOREINFO_BYTES];
u32 vmcoreinfo_note[VMCOREINFO_NOTE_SIZE/4];
-unsigned int vmcoreinfo_size = 0;
-unsigned int vmcoreinfo_max_size = sizeof(vmcoreinfo_data);
+size_t vmcoreinfo_size;
+size_t vmcoreinfo_max_size = sizeof(vmcoreinfo_data);
/* Location of the reserved area for the crash kernel */
struct resource crashk_res = {
int kexec_should_crash(struct task_struct *p)
{
- if (in_interrupt() || !p->pid || is_init(p) || panic_on_oops)
+ if (in_interrupt() || !p->pid || is_global_init(p) || panic_on_oops)
return 1;
return 0;
}
size_t uchunk, mchunk;
page = kimage_alloc_page(image, GFP_HIGHUSER, maddr);
- if (page == 0) {
+ if (!page) {
result = -ENOMEM;
goto out;
}
size_t uchunk, mchunk;
page = pfn_to_page(maddr >> PAGE_SHIFT);
- if (page == 0) {
+ if (!page) {
result = -ENOMEM;
goto out;
}
}
module_init(crash_notes_memory_init)
+
+/*
+ * parsing the "crashkernel" commandline
+ *
+ * this code is intended to be called from architecture specific code
+ */
+
+
+/*
+ * This function parses command lines in the format
+ *
+ * crashkernel=ramsize-range:size[,...][@offset]
+ *
+ * The function returns 0 on success and -EINVAL on failure.
+ */
+static int __init parse_crashkernel_mem(char *cmdline,
+ unsigned long long system_ram,
+ unsigned long long *crash_size,
+ unsigned long long *crash_base)
+{
+ char *cur = cmdline, *tmp;
+
+ /* for each entry of the comma-separated list */
+ do {
+ unsigned long long start, end = ULLONG_MAX, size;
+
+ /* get the start of the range */
+ start = memparse(cur, &tmp);
+ if (cur == tmp) {
+ pr_warning("crashkernel: Memory value expected\n");
+ return -EINVAL;
+ }
+ cur = tmp;
+ if (*cur != '-') {
+ pr_warning("crashkernel: '-' expected\n");
+ return -EINVAL;
+ }
+ cur++;
+
+ /* if no ':' is here, than we read the end */
+ if (*cur != ':') {
+ end = memparse(cur, &tmp);
+ if (cur == tmp) {
+ pr_warning("crashkernel: Memory "
+ "value expected\n");
+ return -EINVAL;
+ }
+ cur = tmp;
+ if (end <= start) {
+ pr_warning("crashkernel: end <= start\n");
+ return -EINVAL;
+ }
+ }
+
+ if (*cur != ':') {
+ pr_warning("crashkernel: ':' expected\n");
+ return -EINVAL;
+ }
+ cur++;
+
+ size = memparse(cur, &tmp);
+ if (cur == tmp) {
+ pr_warning("Memory value expected\n");
+ return -EINVAL;
+ }
+ cur = tmp;
+ if (size >= system_ram) {
+ pr_warning("crashkernel: invalid size\n");
+ return -EINVAL;
+ }
+
+ /* match ? */
+ if (system_ram >= start && system_ram <= end) {
+ *crash_size = size;
+ break;
+ }
+ } while (*cur++ == ',');
+
+ if (*crash_size > 0) {
+ while (*cur != ' ' && *cur != '@')
+ cur++;
+ if (*cur == '@') {
+ cur++;
+ *crash_base = memparse(cur, &tmp);
+ if (cur == tmp) {
+ pr_warning("Memory value expected "
+ "after '@'\n");
+ return -EINVAL;
+ }
+ }
+ }
+
+ return 0;
+}
+
+/*
+ * That function parses "simple" (old) crashkernel command lines like
+ *
+ * crashkernel=size[@offset]
+ *
+ * It returns 0 on success and -EINVAL on failure.
+ */
+static int __init parse_crashkernel_simple(char *cmdline,
+ unsigned long long *crash_size,
+ unsigned long long *crash_base)
+{
+ char *cur = cmdline;
+
+ *crash_size = memparse(cmdline, &cur);
+ if (cmdline == cur) {
+ pr_warning("crashkernel: memory value expected\n");
+ return -EINVAL;
+ }
+
+ if (*cur == '@')
+ *crash_base = memparse(cur+1, &cur);
+
+ return 0;
+}
+
+/*
+ * That function is the entry point for command line parsing and should be
+ * called from the arch-specific code.
+ */
+int __init parse_crashkernel(char *cmdline,
+ unsigned long long system_ram,
+ unsigned long long *crash_size,
+ unsigned long long *crash_base)
+{
+ char *p = cmdline, *ck_cmdline = NULL;
+ char *first_colon, *first_space;
+
+ BUG_ON(!crash_size || !crash_base);
+ *crash_size = 0;
+ *crash_base = 0;
+
+ /* find crashkernel and use the last one if there are more */
+ p = strstr(p, "crashkernel=");
+ while (p) {
+ ck_cmdline = p;
+ p = strstr(p+1, "crashkernel=");
+ }
+
+ if (!ck_cmdline)
+ return -EINVAL;
+
+ ck_cmdline += 12; /* strlen("crashkernel=") */
+
+ /*
+ * if the commandline contains a ':', then that's the extended
+ * syntax -- if not, it must be the classic syntax
+ */
+ first_colon = strchr(ck_cmdline, ':');
+ first_space = strchr(ck_cmdline, ' ');
+ if (first_colon && (!first_space || first_colon < first_space))
+ return parse_crashkernel_mem(ck_cmdline, system_ram,
+ crash_size, crash_base);
+ else
+ return parse_crashkernel_simple(ck_cmdline, crash_size,
+ crash_base);
+
+ return 0;
+}
+
+
+
void crash_save_vmcoreinfo(void)
{
u32 *buf;
if (!vmcoreinfo_size)
return;
- vmcoreinfo_append_str("CRASHTIME=%d", xtime.tv_sec);
+ vmcoreinfo_append_str("CRASHTIME=%ld", get_seconds());
buf = (u32 *)vmcoreinfo_note;
static int __init crash_save_vmcoreinfo_init(void)
{
- vmcoreinfo_append_str("OSRELEASE=%s\n", UTS_RELEASE);
- vmcoreinfo_append_str("PAGESIZE=%d\n", PAGE_SIZE);
+ VMCOREINFO_OSRELEASE(init_uts_ns.name.release);
+ VMCOREINFO_PAGESIZE(PAGE_SIZE);
- SYMBOL(init_uts_ns);
- SYMBOL(node_online_map);
- SYMBOL(swapper_pg_dir);
- SYMBOL(_stext);
+ VMCOREINFO_SYMBOL(init_uts_ns);
+ VMCOREINFO_SYMBOL(node_online_map);
+ VMCOREINFO_SYMBOL(swapper_pg_dir);
+ VMCOREINFO_SYMBOL(_stext);
#ifndef CONFIG_NEED_MULTIPLE_NODES
- SYMBOL(mem_map);
- SYMBOL(contig_page_data);
+ VMCOREINFO_SYMBOL(mem_map);
+ VMCOREINFO_SYMBOL(contig_page_data);
#endif
#ifdef CONFIG_SPARSEMEM
- SYMBOL(mem_section);
- LENGTH(mem_section, NR_SECTION_ROOTS);
- SIZE(mem_section);
- OFFSET(mem_section, section_mem_map);
+ VMCOREINFO_SYMBOL(mem_section);
+ VMCOREINFO_LENGTH(mem_section, NR_SECTION_ROOTS);
+ VMCOREINFO_STRUCT_SIZE(mem_section);
+ VMCOREINFO_OFFSET(mem_section, section_mem_map);
#endif
- SIZE(page);
- SIZE(pglist_data);
- SIZE(zone);
- SIZE(free_area);
- SIZE(list_head);
- OFFSET(page, flags);
- OFFSET(page, _count);
- OFFSET(page, mapping);
- OFFSET(page, lru);
- OFFSET(pglist_data, node_zones);
- OFFSET(pglist_data, nr_zones);
+ VMCOREINFO_STRUCT_SIZE(page);
+ VMCOREINFO_STRUCT_SIZE(pglist_data);
+ VMCOREINFO_STRUCT_SIZE(zone);
+ VMCOREINFO_STRUCT_SIZE(free_area);
+ VMCOREINFO_STRUCT_SIZE(list_head);
+ VMCOREINFO_SIZE(nodemask_t);
+ VMCOREINFO_OFFSET(page, flags);
+ VMCOREINFO_OFFSET(page, _count);
+ VMCOREINFO_OFFSET(page, mapping);
+ VMCOREINFO_OFFSET(page, lru);
+ VMCOREINFO_OFFSET(pglist_data, node_zones);
+ VMCOREINFO_OFFSET(pglist_data, nr_zones);
#ifdef CONFIG_FLAT_NODE_MEM_MAP
- OFFSET(pglist_data, node_mem_map);
+ VMCOREINFO_OFFSET(pglist_data, node_mem_map);
#endif
- OFFSET(pglist_data, node_start_pfn);
- OFFSET(pglist_data, node_spanned_pages);
- OFFSET(pglist_data, node_id);
- OFFSET(zone, free_area);
- OFFSET(zone, vm_stat);
- OFFSET(zone, spanned_pages);
- OFFSET(free_area, free_list);
- OFFSET(list_head, next);
- OFFSET(list_head, prev);
- LENGTH(zone.free_area, MAX_ORDER);
+ VMCOREINFO_OFFSET(pglist_data, node_start_pfn);
+ VMCOREINFO_OFFSET(pglist_data, node_spanned_pages);
+ VMCOREINFO_OFFSET(pglist_data, node_id);
+ VMCOREINFO_OFFSET(zone, free_area);
+ VMCOREINFO_OFFSET(zone, vm_stat);
+ VMCOREINFO_OFFSET(zone, spanned_pages);
+ VMCOREINFO_OFFSET(free_area, free_list);
+ VMCOREINFO_OFFSET(list_head, next);
+ VMCOREINFO_OFFSET(list_head, prev);
+ VMCOREINFO_LENGTH(zone.free_area, MAX_ORDER);
+ VMCOREINFO_LENGTH(free_area.free_list, MIGRATE_TYPES);
+ VMCOREINFO_NUMBER(NR_FREE_PAGES);
arch_crash_save_vmcoreinfo();
projects / powerpc.git / blobdiff