Patch 2:
Addition of /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 loaded when phyp_dump has been registered.
Signed-off-by: Manish Ahuja <mahuja at us.ibm.com>
---
arch/powerpc/platforms/pseries/phyp_dump.c | 18 ++++++++++++++++++
1 file changed, 18 insertions(+)
Index: 2.6.25-rc1/arch/powerpc/platforms/pseries/phyp_dump.c
===================================================================
--- 2.6.25-rc1.orig/arch/powerpc/platforms/pseries/phyp_dump.c 2008-03-22 01:07:43.000000000 -0500
+++ 2.6.25-rc1/arch/powerpc/platforms/pseries/phyp_dump.c 2008-03-22 01:08:56.000000000 -0500
@@ -182,6 +182,18 @@ static void print_dump_header(const stru
#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 ph
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
