src/patches/suse-2.6.27.31/patches.fixes/uv-sysfs.diff

   1 From: Russ Anderson <rja@sgi.com>
   2 Subject: x86: Add UV sysfs entries
   3 References: bnc#442455
   4
   5 Create /sys/firmware/sgi_uv sysfs entries for partition_id and coherence_id.
   6
   7 Signed-off-by: Russ Anderson <rja@sgi.com>
   8 Acked-by: Bernhard Walle <bwalle@suse.de>
   9
  10 ---
  11  arch/x86/kernel/Makefile   |    1
  12  arch/x86/kernel/uv_sysfs.c |   72 +++++++++++++++++++++++++++++++++++++++++++++
  13  include/asm-x86/uv/bios.h  |    1
  14  3 files changed, 74 insertions(+)
  15
  16 --- a/arch/x86/kernel/Makefile
  17 +++ b/arch/x86/kernel/Makefile
  18 @@ -103,6 +103,7 @@ obj-$(CONFIG_OLPC)          += olpc.o
  19  # 64 bit specific files
  20  ifeq ($(CONFIG_X86_64),y)
  21          obj-y                          += genapic_64.o genapic_flat_64.o genx2apic_uv_x.o tlb_uv.o
  22 +        obj-y                          += uv_sysfs.o
  23          obj-y                          += genx2apic_cluster.o
  24          obj-y                          += genx2apic_phys.o
  25         obj-y                           += bios_uv.o
  26 --- /dev/null
  27 +++ b/arch/x86/kernel/uv_sysfs.c
  28 @@ -0,0 +1,72 @@
  29 +/*
  30 + * This file supports the /sys/firmware/sgi_uv interfaces for SGI UV.
  31 + *
  32 + *  This program is free software; you can redistribute it and/or modify
  33 + *  it under the terms of the GNU General Public License as published by
  34 + *  the Free Software Foundation; either version 2 of the License, or
  35 + *  (at your option) any later version.
  36 + *
  37 + *  This program is distributed in the hope that it will be useful,
  38 + *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  39 + *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  40 + *  GNU General Public License for more details.
  41 + *
  42 + *  You should have received a copy of the GNU General Public License
  43 + *  along with this program; if not, write to the Free Software
  44 + *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  45 + *
  46 + *  Copyright (c) 2008 Silicon Graphics, Inc.  All Rights Reserved.
  47 + *  Copyright (c) Russ Anderson
  48 + */
  49 +
  50 +#include <linux/sysdev.h>
  51 +#include <asm/uv/bios.h>
  52 +
  53 +struct kobject *sgi_uv_kobj;
  54 +
  55 +static ssize_t partition_id_show(struct kobject *kobj,
  56 +                       struct kobj_attribute *attr, char *buf)
  57 +{
  58 +       return snprintf(buf, PAGE_SIZE, "%ld\n", sn_partition_id);
  59 +}
  60 +
  61 +static ssize_t coherence_id_show(struct kobject *kobj,
  62 +                       struct kobj_attribute *attr, char *buf)
  63 +{
  64 +       return snprintf(buf, PAGE_SIZE, "%ld\n", partition_coherence_id());
  65 +}
  66 +
  67 +static struct kobj_attribute partition_id_attr =
  68 +       __ATTR(partition_id, S_IRUGO, partition_id_show, NULL);
  69 +
  70 +static struct kobj_attribute coherence_id_attr =
  71 +       __ATTR(coherence_id, S_IRUGO, coherence_id_show, NULL);
  72 +
  73 +
  74 +static int __init sgi_uv_sysfs_init(void)
  75 +{
  76 +       unsigned long ret;
  77 +
  78 +       if (!sgi_uv_kobj)
  79 +               sgi_uv_kobj = kobject_create_and_add("sgi_uv", firmware_kobj);
  80 +       if (!sgi_uv_kobj) {
  81 +               printk(KERN_WARNING "kobject_create_and_add sgi_uv failed \n");
  82 +               return -EINVAL;
  83 +       }
  84 +
  85 +       ret = sysfs_create_file(sgi_uv_kobj, &partition_id_attr.attr);
  86 +       if (ret) {
  87 +               printk(KERN_WARNING "sysfs_create_file partition_id failed \n");
  88 +               return ret;
  89 +       }
  90 +
  91 +       ret = sysfs_create_file(sgi_uv_kobj, &coherence_id_attr.attr);
  92 +       if (ret) {
  93 +               printk(KERN_WARNING "sysfs_create_file coherence_id failed \n");
  94 +               return ret;
  95 +       }
  96 +
  97 +       return 0;
  98 +}
  99 +
 100 +device_initcall(sgi_uv_sysfs_init);
 101 --- a/include/asm-x86/uv/bios.h
 102 +++ b/include/asm-x86/uv/bios.h
 103 @@ -89,5 +89,6 @@ extern long uv_coherency_id;
 104  extern long uv_region_size;
 105  #define partition_coherence_id()       (uv_coherency_id)
 106
 107 +extern struct kobject *sgi_uv_kobj;    /* /sys/firmware/sgi_uv */
 108
 109  #endif /* _ASM_X86_BIOS_H */