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[POWERPC] pseries: phyp dump: Inform kdump when phyp-dump is loaded

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This adds /sys/kernel/phyp_dump_active so that kdump init scripts may
look for it and take appropriate action if this file is found.  This
file is only created when phyp_dump has been registered.

Signed-off-by: Manish Ahuja <mahuja@us.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
This commit is contained in:
Manish Ahuja 2008-03-22 11:40:53 +11:00 committed by Paul Mackerras
parent 654f596da4
commit 7415d5e0be
1 changed files with 18 additions and 0 deletions
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18
arch/powerpc/platforms/pseries/phyp_dump.c
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@ -182,6 +182,18 @@ static void print_dump_header(const struct phyp_dump_header *ph)
#endif
}
static ssize_t show_phyp_dump_active(struct kobject *kobj,
struct kobj_attribute *attr, char *buf)
{
/* create filesystem entry so kdump is phyp-dump aware */
return sprintf(buf, "%lx\n", phyp_dump_info->phyp_dump_at_boot);
}
static struct kobj_attribute pdl = __ATTR(phyp_dump_active, 0600,
show_phyp_dump_active,
NULL);
static void register_dump_area(struct phyp_dump_header *ph, unsigned long addr)
{
int rc;
@ -204,7 +216,13 @@ static void register_dump_area(struct phyp_dump_header *ph, unsigned long addr)
printk(KERN_ERR "phyp-dump: unexpected error (%d) on "
"register\n", rc);
print_dump_header(ph);
return;
}
rc = sysfs_create_file(kernel_kobj, &pdl.attr);
if (rc)
printk(KERN_ERR "phyp-dump: unable to create sysfs"
" file (%d)\n", rc);
}
static