609 lines
16 KiB
C
609 lines
16 KiB
C
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// SPDX-License-Identifier: GPL-2.0
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/*
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* Hypervisor filesystem for Linux on s390. Diag 204 and 224
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* implementation.
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*
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* Copyright IBM Corp. 2006, 2008
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* Author(s): Michael Holzheu <holzheu@de.ibm.com>
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*/
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#define KMSG_COMPONENT "hypfs"
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#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
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#include <linux/types.h>
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#include <linux/errno.h>
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#include <linux/slab.h>
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#include <linux/string.h>
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#include <linux/vmalloc.h>
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#include <linux/mm.h>
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#include <asm/diag.h>
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#include <asm/ebcdic.h>
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#include "hypfs.h"
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#define TMP_SIZE 64 /* size of temporary buffers */
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#define DBFS_D204_HDR_VERSION 0
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static char *diag224_cpu_names; /* diag 224 name table */
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static enum diag204_sc diag204_store_sc; /* used subcode for store */
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static enum diag204_format diag204_info_type; /* used diag 204 data format */
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static void *diag204_buf; /* 4K aligned buffer for diag204 data */
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static void *diag204_buf_vmalloc; /* vmalloc pointer for diag204 data */
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static int diag204_buf_pages; /* number of pages for diag204 data */
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static struct dentry *dbfs_d204_file;
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/*
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* DIAG 204 member access functions.
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*
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* Since we have two different diag 204 data formats for old and new s390
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* machines, we do not access the structs directly, but use getter functions for
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* each struct member instead. This should make the code more readable.
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*/
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/* Time information block */
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static inline int info_blk_hdr__size(enum diag204_format type)
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{
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if (type == DIAG204_INFO_SIMPLE)
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return sizeof(struct diag204_info_blk_hdr);
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else /* DIAG204_INFO_EXT */
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return sizeof(struct diag204_x_info_blk_hdr);
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}
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static inline __u8 info_blk_hdr__npar(enum diag204_format type, void *hdr)
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{
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if (type == DIAG204_INFO_SIMPLE)
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return ((struct diag204_info_blk_hdr *)hdr)->npar;
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else /* DIAG204_INFO_EXT */
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return ((struct diag204_x_info_blk_hdr *)hdr)->npar;
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}
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static inline __u8 info_blk_hdr__flags(enum diag204_format type, void *hdr)
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{
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if (type == DIAG204_INFO_SIMPLE)
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return ((struct diag204_info_blk_hdr *)hdr)->flags;
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else /* DIAG204_INFO_EXT */
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return ((struct diag204_x_info_blk_hdr *)hdr)->flags;
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}
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/* Partition header */
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static inline int part_hdr__size(enum diag204_format type)
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{
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if (type == DIAG204_INFO_SIMPLE)
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return sizeof(struct diag204_part_hdr);
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else /* DIAG204_INFO_EXT */
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return sizeof(struct diag204_x_part_hdr);
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}
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static inline __u8 part_hdr__rcpus(enum diag204_format type, void *hdr)
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{
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if (type == DIAG204_INFO_SIMPLE)
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return ((struct diag204_part_hdr *)hdr)->cpus;
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else /* DIAG204_INFO_EXT */
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return ((struct diag204_x_part_hdr *)hdr)->rcpus;
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}
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static inline void part_hdr__part_name(enum diag204_format type, void *hdr,
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char *name)
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{
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if (type == DIAG204_INFO_SIMPLE)
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memcpy(name, ((struct diag204_part_hdr *)hdr)->part_name,
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DIAG204_LPAR_NAME_LEN);
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else /* DIAG204_INFO_EXT */
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memcpy(name, ((struct diag204_x_part_hdr *)hdr)->part_name,
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DIAG204_LPAR_NAME_LEN);
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EBCASC(name, DIAG204_LPAR_NAME_LEN);
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name[DIAG204_LPAR_NAME_LEN] = 0;
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strim(name);
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}
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/* CPU info block */
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static inline int cpu_info__size(enum diag204_format type)
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{
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if (type == DIAG204_INFO_SIMPLE)
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return sizeof(struct diag204_cpu_info);
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else /* DIAG204_INFO_EXT */
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return sizeof(struct diag204_x_cpu_info);
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}
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static inline __u8 cpu_info__ctidx(enum diag204_format type, void *hdr)
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{
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if (type == DIAG204_INFO_SIMPLE)
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return ((struct diag204_cpu_info *)hdr)->ctidx;
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else /* DIAG204_INFO_EXT */
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return ((struct diag204_x_cpu_info *)hdr)->ctidx;
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}
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static inline __u16 cpu_info__cpu_addr(enum diag204_format type, void *hdr)
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{
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if (type == DIAG204_INFO_SIMPLE)
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return ((struct diag204_cpu_info *)hdr)->cpu_addr;
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else /* DIAG204_INFO_EXT */
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return ((struct diag204_x_cpu_info *)hdr)->cpu_addr;
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}
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static inline __u64 cpu_info__acc_time(enum diag204_format type, void *hdr)
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{
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if (type == DIAG204_INFO_SIMPLE)
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return ((struct diag204_cpu_info *)hdr)->acc_time;
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else /* DIAG204_INFO_EXT */
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return ((struct diag204_x_cpu_info *)hdr)->acc_time;
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}
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static inline __u64 cpu_info__lp_time(enum diag204_format type, void *hdr)
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{
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if (type == DIAG204_INFO_SIMPLE)
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return ((struct diag204_cpu_info *)hdr)->lp_time;
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else /* DIAG204_INFO_EXT */
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return ((struct diag204_x_cpu_info *)hdr)->lp_time;
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}
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static inline __u64 cpu_info__online_time(enum diag204_format type, void *hdr)
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{
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if (type == DIAG204_INFO_SIMPLE)
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return 0; /* online_time not available in simple info */
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else /* DIAG204_INFO_EXT */
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return ((struct diag204_x_cpu_info *)hdr)->online_time;
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}
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/* Physical header */
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static inline int phys_hdr__size(enum diag204_format type)
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{
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if (type == DIAG204_INFO_SIMPLE)
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return sizeof(struct diag204_phys_hdr);
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else /* DIAG204_INFO_EXT */
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return sizeof(struct diag204_x_phys_hdr);
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}
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static inline __u8 phys_hdr__cpus(enum diag204_format type, void *hdr)
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{
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if (type == DIAG204_INFO_SIMPLE)
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return ((struct diag204_phys_hdr *)hdr)->cpus;
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else /* DIAG204_INFO_EXT */
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return ((struct diag204_x_phys_hdr *)hdr)->cpus;
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}
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/* Physical CPU info block */
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static inline int phys_cpu__size(enum diag204_format type)
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{
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if (type == DIAG204_INFO_SIMPLE)
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return sizeof(struct diag204_phys_cpu);
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else /* DIAG204_INFO_EXT */
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return sizeof(struct diag204_x_phys_cpu);
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}
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static inline __u16 phys_cpu__cpu_addr(enum diag204_format type, void *hdr)
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{
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if (type == DIAG204_INFO_SIMPLE)
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return ((struct diag204_phys_cpu *)hdr)->cpu_addr;
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else /* DIAG204_INFO_EXT */
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return ((struct diag204_x_phys_cpu *)hdr)->cpu_addr;
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}
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static inline __u64 phys_cpu__mgm_time(enum diag204_format type, void *hdr)
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{
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if (type == DIAG204_INFO_SIMPLE)
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return ((struct diag204_phys_cpu *)hdr)->mgm_time;
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else /* DIAG204_INFO_EXT */
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return ((struct diag204_x_phys_cpu *)hdr)->mgm_time;
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}
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static inline __u64 phys_cpu__ctidx(enum diag204_format type, void *hdr)
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{
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if (type == DIAG204_INFO_SIMPLE)
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return ((struct diag204_phys_cpu *)hdr)->ctidx;
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else /* DIAG204_INFO_EXT */
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return ((struct diag204_x_phys_cpu *)hdr)->ctidx;
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}
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/* Diagnose 204 functions */
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/*
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* For the old diag subcode 4 with simple data format we have to use real
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* memory. If we use subcode 6 or 7 with extended data format, we can (and
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* should) use vmalloc, since we need a lot of memory in that case. Currently
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* up to 93 pages!
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*/
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static void diag204_free_buffer(void)
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{
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if (!diag204_buf)
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return;
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if (diag204_buf_vmalloc) {
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vfree(diag204_buf_vmalloc);
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diag204_buf_vmalloc = NULL;
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} else {
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free_pages((unsigned long) diag204_buf, 0);
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}
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diag204_buf = NULL;
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}
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static void *page_align_ptr(void *ptr)
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{
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return (void *) PAGE_ALIGN((unsigned long) ptr);
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}
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static void *diag204_alloc_vbuf(int pages)
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{
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/* The buffer has to be page aligned! */
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diag204_buf_vmalloc = vmalloc(array_size(PAGE_SIZE, (pages + 1)));
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if (!diag204_buf_vmalloc)
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return ERR_PTR(-ENOMEM);
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diag204_buf = page_align_ptr(diag204_buf_vmalloc);
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diag204_buf_pages = pages;
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return diag204_buf;
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}
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static void *diag204_alloc_rbuf(void)
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{
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diag204_buf = (void*)__get_free_pages(GFP_KERNEL,0);
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if (!diag204_buf)
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return ERR_PTR(-ENOMEM);
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diag204_buf_pages = 1;
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return diag204_buf;
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}
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static void *diag204_get_buffer(enum diag204_format fmt, int *pages)
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{
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if (diag204_buf) {
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*pages = diag204_buf_pages;
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return diag204_buf;
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}
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if (fmt == DIAG204_INFO_SIMPLE) {
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*pages = 1;
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return diag204_alloc_rbuf();
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} else {/* DIAG204_INFO_EXT */
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*pages = diag204((unsigned long)DIAG204_SUBC_RSI |
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(unsigned long)DIAG204_INFO_EXT, 0, NULL);
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if (*pages <= 0)
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return ERR_PTR(-ENOSYS);
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else
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return diag204_alloc_vbuf(*pages);
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}
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}
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/*
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* diag204_probe() has to find out, which type of diagnose 204 implementation
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* we have on our machine. Currently there are three possible scanarios:
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* - subcode 4 + simple data format (only one page)
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* - subcode 4-6 + extended data format
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* - subcode 4-7 + extended data format
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*
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* Subcode 5 is used to retrieve the size of the data, provided by subcodes
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* 6 and 7. Subcode 7 basically has the same function as subcode 6. In addition
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* to subcode 6 it provides also information about secondary cpus.
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* In order to get as much information as possible, we first try
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* subcode 7, then 6 and if both fail, we use subcode 4.
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*/
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static int diag204_probe(void)
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{
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void *buf;
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int pages, rc;
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buf = diag204_get_buffer(DIAG204_INFO_EXT, &pages);
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if (!IS_ERR(buf)) {
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if (diag204((unsigned long)DIAG204_SUBC_STIB7 |
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(unsigned long)DIAG204_INFO_EXT, pages, buf) >= 0) {
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diag204_store_sc = DIAG204_SUBC_STIB7;
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diag204_info_type = DIAG204_INFO_EXT;
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goto out;
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}
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if (diag204((unsigned long)DIAG204_SUBC_STIB6 |
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(unsigned long)DIAG204_INFO_EXT, pages, buf) >= 0) {
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diag204_store_sc = DIAG204_SUBC_STIB6;
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diag204_info_type = DIAG204_INFO_EXT;
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goto out;
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}
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diag204_free_buffer();
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}
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/* subcodes 6 and 7 failed, now try subcode 4 */
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buf = diag204_get_buffer(DIAG204_INFO_SIMPLE, &pages);
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if (IS_ERR(buf)) {
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rc = PTR_ERR(buf);
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goto fail_alloc;
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}
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if (diag204((unsigned long)DIAG204_SUBC_STIB4 |
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(unsigned long)DIAG204_INFO_SIMPLE, pages, buf) >= 0) {
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diag204_store_sc = DIAG204_SUBC_STIB4;
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diag204_info_type = DIAG204_INFO_SIMPLE;
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goto out;
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} else {
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rc = -ENOSYS;
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goto fail_store;
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}
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out:
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rc = 0;
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fail_store:
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diag204_free_buffer();
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fail_alloc:
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return rc;
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}
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static int diag204_do_store(void *buf, int pages)
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{
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int rc;
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rc = diag204((unsigned long) diag204_store_sc |
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(unsigned long) diag204_info_type, pages, buf);
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return rc < 0 ? -ENOSYS : 0;
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}
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static void *diag204_store(void)
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{
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void *buf;
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int pages, rc;
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buf = diag204_get_buffer(diag204_info_type, &pages);
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if (IS_ERR(buf))
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goto out;
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rc = diag204_do_store(buf, pages);
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if (rc)
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return ERR_PTR(rc);
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out:
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return buf;
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}
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/* Diagnose 224 functions */
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static int diag224_get_name_table(void)
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{
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/* memory must be below 2GB */
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diag224_cpu_names = (char *) __get_free_page(GFP_KERNEL | GFP_DMA);
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if (!diag224_cpu_names)
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return -ENOMEM;
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if (diag224(diag224_cpu_names)) {
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free_page((unsigned long) diag224_cpu_names);
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return -EOPNOTSUPP;
|
||
|
|
}
|
||
|
|
EBCASC(diag224_cpu_names + 16, (*diag224_cpu_names + 1) * 16);
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static void diag224_delete_name_table(void)
|
||
|
|
{
|
||
|
|
free_page((unsigned long) diag224_cpu_names);
|
||
|
|
}
|
||
|
|
|
||
|
|
static int diag224_idx2name(int index, char *name)
|
||
|
|
{
|
||
|
|
memcpy(name, diag224_cpu_names + ((index + 1) * DIAG204_CPU_NAME_LEN),
|
||
|
|
DIAG204_CPU_NAME_LEN);
|
||
|
|
name[DIAG204_CPU_NAME_LEN] = 0;
|
||
|
|
strim(name);
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
struct dbfs_d204_hdr {
|
||
|
|
u64 len; /* Length of d204 buffer without header */
|
||
|
|
u16 version; /* Version of header */
|
||
|
|
u8 sc; /* Used subcode */
|
||
|
|
char reserved[53];
|
||
|
|
} __attribute__ ((packed));
|
||
|
|
|
||
|
|
struct dbfs_d204 {
|
||
|
|
struct dbfs_d204_hdr hdr; /* 64 byte header */
|
||
|
|
char buf[]; /* d204 buffer */
|
||
|
|
} __attribute__ ((packed));
|
||
|
|
|
||
|
|
static int dbfs_d204_create(void **data, void **data_free_ptr, size_t *size)
|
||
|
|
{
|
||
|
|
struct dbfs_d204 *d204;
|
||
|
|
int rc, buf_size;
|
||
|
|
void *base;
|
||
|
|
|
||
|
|
buf_size = PAGE_SIZE * (diag204_buf_pages + 1) + sizeof(d204->hdr);
|
||
|
|
base = vzalloc(buf_size);
|
||
|
|
if (!base)
|
||
|
|
return -ENOMEM;
|
||
|
|
d204 = page_align_ptr(base + sizeof(d204->hdr)) - sizeof(d204->hdr);
|
||
|
|
rc = diag204_do_store(d204->buf, diag204_buf_pages);
|
||
|
|
if (rc) {
|
||
|
|
vfree(base);
|
||
|
|
return rc;
|
||
|
|
}
|
||
|
|
d204->hdr.version = DBFS_D204_HDR_VERSION;
|
||
|
|
d204->hdr.len = PAGE_SIZE * diag204_buf_pages;
|
||
|
|
d204->hdr.sc = diag204_store_sc;
|
||
|
|
*data = d204;
|
||
|
|
*data_free_ptr = base;
|
||
|
|
*size = d204->hdr.len + sizeof(struct dbfs_d204_hdr);
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static struct hypfs_dbfs_file dbfs_file_d204 = {
|
||
|
|
.name = "diag_204",
|
||
|
|
.data_create = dbfs_d204_create,
|
||
|
|
.data_free = vfree,
|
||
|
|
};
|
||
|
|
|
||
|
|
__init int hypfs_diag_init(void)
|
||
|
|
{
|
||
|
|
int rc;
|
||
|
|
|
||
|
|
if (diag204_probe()) {
|
||
|
|
pr_info("The hardware system does not support hypfs\n");
|
||
|
|
return -ENODATA;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (diag204_info_type == DIAG204_INFO_EXT)
|
||
|
|
hypfs_dbfs_create_file(&dbfs_file_d204);
|
||
|
|
|
||
|
|
if (MACHINE_IS_LPAR) {
|
||
|
|
rc = diag224_get_name_table();
|
||
|
|
if (rc) {
|
||
|
|
pr_err("The hardware system does not provide all "
|
||
|
|
"functions required by hypfs\n");
|
||
|
|
debugfs_remove(dbfs_d204_file);
|
||
|
|
return rc;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
void hypfs_diag_exit(void)
|
||
|
|
{
|
||
|
|
debugfs_remove(dbfs_d204_file);
|
||
|
|
diag224_delete_name_table();
|
||
|
|
diag204_free_buffer();
|
||
|
|
hypfs_dbfs_remove_file(&dbfs_file_d204);
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Functions to create the directory structure
|
||
|
|
* *******************************************
|
||
|
|
*/
|
||
|
|
|
||
|
|
static int hypfs_create_cpu_files(struct dentry *cpus_dir, void *cpu_info)
|
||
|
|
{
|
||
|
|
struct dentry *cpu_dir;
|
||
|
|
char buffer[TMP_SIZE];
|
||
|
|
void *rc;
|
||
|
|
|
||
|
|
snprintf(buffer, TMP_SIZE, "%d", cpu_info__cpu_addr(diag204_info_type,
|
||
|
|
cpu_info));
|
||
|
|
cpu_dir = hypfs_mkdir(cpus_dir, buffer);
|
||
|
|
rc = hypfs_create_u64(cpu_dir, "mgmtime",
|
||
|
|
cpu_info__acc_time(diag204_info_type, cpu_info) -
|
||
|
|
cpu_info__lp_time(diag204_info_type, cpu_info));
|
||
|
|
if (IS_ERR(rc))
|
||
|
|
return PTR_ERR(rc);
|
||
|
|
rc = hypfs_create_u64(cpu_dir, "cputime",
|
||
|
|
cpu_info__lp_time(diag204_info_type, cpu_info));
|
||
|
|
if (IS_ERR(rc))
|
||
|
|
return PTR_ERR(rc);
|
||
|
|
if (diag204_info_type == DIAG204_INFO_EXT) {
|
||
|
|
rc = hypfs_create_u64(cpu_dir, "onlinetime",
|
||
|
|
cpu_info__online_time(diag204_info_type,
|
||
|
|
cpu_info));
|
||
|
|
if (IS_ERR(rc))
|
||
|
|
return PTR_ERR(rc);
|
||
|
|
}
|
||
|
|
diag224_idx2name(cpu_info__ctidx(diag204_info_type, cpu_info), buffer);
|
||
|
|
rc = hypfs_create_str(cpu_dir, "type", buffer);
|
||
|
|
return PTR_ERR_OR_ZERO(rc);
|
||
|
|
}
|
||
|
|
|
||
|
|
static void *hypfs_create_lpar_files(struct dentry *systems_dir, void *part_hdr)
|
||
|
|
{
|
||
|
|
struct dentry *cpus_dir;
|
||
|
|
struct dentry *lpar_dir;
|
||
|
|
char lpar_name[DIAG204_LPAR_NAME_LEN + 1];
|
||
|
|
void *cpu_info;
|
||
|
|
int i;
|
||
|
|
|
||
|
|
part_hdr__part_name(diag204_info_type, part_hdr, lpar_name);
|
||
|
|
lpar_name[DIAG204_LPAR_NAME_LEN] = 0;
|
||
|
|
lpar_dir = hypfs_mkdir(systems_dir, lpar_name);
|
||
|
|
if (IS_ERR(lpar_dir))
|
||
|
|
return lpar_dir;
|
||
|
|
cpus_dir = hypfs_mkdir(lpar_dir, "cpus");
|
||
|
|
if (IS_ERR(cpus_dir))
|
||
|
|
return cpus_dir;
|
||
|
|
cpu_info = part_hdr + part_hdr__size(diag204_info_type);
|
||
|
|
for (i = 0; i < part_hdr__rcpus(diag204_info_type, part_hdr); i++) {
|
||
|
|
int rc;
|
||
|
|
rc = hypfs_create_cpu_files(cpus_dir, cpu_info);
|
||
|
|
if (rc)
|
||
|
|
return ERR_PTR(rc);
|
||
|
|
cpu_info += cpu_info__size(diag204_info_type);
|
||
|
|
}
|
||
|
|
return cpu_info;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int hypfs_create_phys_cpu_files(struct dentry *cpus_dir, void *cpu_info)
|
||
|
|
{
|
||
|
|
struct dentry *cpu_dir;
|
||
|
|
char buffer[TMP_SIZE];
|
||
|
|
void *rc;
|
||
|
|
|
||
|
|
snprintf(buffer, TMP_SIZE, "%i", phys_cpu__cpu_addr(diag204_info_type,
|
||
|
|
cpu_info));
|
||
|
|
cpu_dir = hypfs_mkdir(cpus_dir, buffer);
|
||
|
|
if (IS_ERR(cpu_dir))
|
||
|
|
return PTR_ERR(cpu_dir);
|
||
|
|
rc = hypfs_create_u64(cpu_dir, "mgmtime",
|
||
|
|
phys_cpu__mgm_time(diag204_info_type, cpu_info));
|
||
|
|
if (IS_ERR(rc))
|
||
|
|
return PTR_ERR(rc);
|
||
|
|
diag224_idx2name(phys_cpu__ctidx(diag204_info_type, cpu_info), buffer);
|
||
|
|
rc = hypfs_create_str(cpu_dir, "type", buffer);
|
||
|
|
return PTR_ERR_OR_ZERO(rc);
|
||
|
|
}
|
||
|
|
|
||
|
|
static void *hypfs_create_phys_files(struct dentry *parent_dir, void *phys_hdr)
|
||
|
|
{
|
||
|
|
int i;
|
||
|
|
void *cpu_info;
|
||
|
|
struct dentry *cpus_dir;
|
||
|
|
|
||
|
|
cpus_dir = hypfs_mkdir(parent_dir, "cpus");
|
||
|
|
if (IS_ERR(cpus_dir))
|
||
|
|
return cpus_dir;
|
||
|
|
cpu_info = phys_hdr + phys_hdr__size(diag204_info_type);
|
||
|
|
for (i = 0; i < phys_hdr__cpus(diag204_info_type, phys_hdr); i++) {
|
||
|
|
int rc;
|
||
|
|
rc = hypfs_create_phys_cpu_files(cpus_dir, cpu_info);
|
||
|
|
if (rc)
|
||
|
|
return ERR_PTR(rc);
|
||
|
|
cpu_info += phys_cpu__size(diag204_info_type);
|
||
|
|
}
|
||
|
|
return cpu_info;
|
||
|
|
}
|
||
|
|
|
||
|
|
int hypfs_diag_create_files(struct dentry *root)
|
||
|
|
{
|
||
|
|
struct dentry *systems_dir, *hyp_dir;
|
||
|
|
void *time_hdr, *part_hdr;
|
||
|
|
int i, rc;
|
||
|
|
void *buffer, *ptr;
|
||
|
|
|
||
|
|
buffer = diag204_store();
|
||
|
|
if (IS_ERR(buffer))
|
||
|
|
return PTR_ERR(buffer);
|
||
|
|
|
||
|
|
systems_dir = hypfs_mkdir(root, "systems");
|
||
|
|
if (IS_ERR(systems_dir)) {
|
||
|
|
rc = PTR_ERR(systems_dir);
|
||
|
|
goto err_out;
|
||
|
|
}
|
||
|
|
time_hdr = (struct x_info_blk_hdr *)buffer;
|
||
|
|
part_hdr = time_hdr + info_blk_hdr__size(diag204_info_type);
|
||
|
|
for (i = 0; i < info_blk_hdr__npar(diag204_info_type, time_hdr); i++) {
|
||
|
|
part_hdr = hypfs_create_lpar_files(systems_dir, part_hdr);
|
||
|
|
if (IS_ERR(part_hdr)) {
|
||
|
|
rc = PTR_ERR(part_hdr);
|
||
|
|
goto err_out;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
if (info_blk_hdr__flags(diag204_info_type, time_hdr) &
|
||
|
|
DIAG204_LPAR_PHYS_FLG) {
|
||
|
|
ptr = hypfs_create_phys_files(root, part_hdr);
|
||
|
|
if (IS_ERR(ptr)) {
|
||
|
|
rc = PTR_ERR(ptr);
|
||
|
|
goto err_out;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
hyp_dir = hypfs_mkdir(root, "hyp");
|
||
|
|
if (IS_ERR(hyp_dir)) {
|
||
|
|
rc = PTR_ERR(hyp_dir);
|
||
|
|
goto err_out;
|
||
|
|
}
|
||
|
|
ptr = hypfs_create_str(hyp_dir, "type", "LPAR Hypervisor");
|
||
|
|
if (IS_ERR(ptr)) {
|
||
|
|
rc = PTR_ERR(ptr);
|
||
|
|
goto err_out;
|
||
|
|
}
|
||
|
|
rc = 0;
|
||
|
|
|
||
|
|
err_out:
|
||
|
|
return rc;
|
||
|
|
}
|