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| author | Manish Ahuja <ahuja@austin.ibm.com> | 2008-03-22 11:40:53 +1100 |
|---|---|---|
| committer | Paul Mackerras <paulus@samba.org> | 2008-03-26 08:44:07 +1100 |
| commit | 7415d5e0bec6ecd79d2698ae9655b10be47d8aa8 (patch) | |
| tree | 8b11f20c0d66f7e0dbabca80e6a047f5d556a864 /arch/powerpc/platforms/pseries/phyp_dump.c | |
| parent | 654f596da4a83a8d2734fba26c2a1257533e6d75 (diff) | |
| download | blackbird-op-linux-7415d5e0bec6ecd79d2698ae9655b10be47d8aa8.tar.gz blackbird-op-linux-7415d5e0bec6ecd79d2698ae9655b10be47d8aa8.zip | |
[POWERPC] pseries: phyp dump: Inform kdump when phyp-dump is loaded
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>
Diffstat (limited to 'arch/powerpc/platforms/pseries/phyp_dump.c')
| -rw-r--r-- | arch/powerpc/platforms/pseries/phyp_dump.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/arch/powerpc/platforms/pseries/phyp_dump.c b/arch/powerpc/platforms/pseries/phyp_dump.c index f80f8606c6b8..7ddd10526cea 100644 --- a/arch/powerpc/platforms/pseries/phyp_dump.c +++ b/arch/powerpc/platforms/pseries/phyp_dump.c @@ -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 |
