140 lines
3.5 KiB
C
140 lines
3.5 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Hypervisor filesystem for Linux on s390. z/VM implementation.
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*
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* Copyright IBM Corp. 2006
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* Author(s): Michael Holzheu <holzheu@de.ibm.com>
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*/
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#include <linux/types.h>
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#include <linux/errno.h>
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#include <linux/string.h>
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#include <linux/vmalloc.h>
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#include <asm/extable.h>
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#include <asm/diag.h>
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#include <asm/ebcdic.h>
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#include <asm/timex.h>
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#include "hypfs_vm.h"
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#include "hypfs.h"
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#define ATTRIBUTE(dir, name, member) \
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do { \
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void *rc; \
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rc = hypfs_create_u64(dir, name, member); \
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if (IS_ERR(rc)) \
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return PTR_ERR(rc); \
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} while (0)
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static int hypfs_vm_create_guest(struct dentry *systems_dir,
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struct diag2fc_data *data)
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{
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char guest_name[DIAG2FC_NAME_LEN + 1] = {};
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struct dentry *guest_dir, *cpus_dir, *samples_dir, *mem_dir;
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int dedicated_flag, capped_value;
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capped_value = (data->flags & 0x00000006) >> 1;
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dedicated_flag = (data->flags & 0x00000008) >> 3;
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/* guest dir */
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memcpy(guest_name, data->guest_name, DIAG2FC_NAME_LEN);
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EBCASC(guest_name, DIAG2FC_NAME_LEN);
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strim(guest_name);
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guest_dir = hypfs_mkdir(systems_dir, guest_name);
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if (IS_ERR(guest_dir))
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return PTR_ERR(guest_dir);
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ATTRIBUTE(guest_dir, "onlinetime_us", data->el_time);
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/* logical cpu information */
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cpus_dir = hypfs_mkdir(guest_dir, "cpus");
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if (IS_ERR(cpus_dir))
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return PTR_ERR(cpus_dir);
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ATTRIBUTE(cpus_dir, "cputime_us", data->used_cpu);
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ATTRIBUTE(cpus_dir, "capped", capped_value);
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ATTRIBUTE(cpus_dir, "dedicated", dedicated_flag);
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ATTRIBUTE(cpus_dir, "count", data->vcpus);
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/*
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* Note: The "weight_min" attribute got the wrong name.
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* The value represents the number of non-stopped (operating)
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* CPUS.
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*/
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ATTRIBUTE(cpus_dir, "weight_min", data->ocpus);
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ATTRIBUTE(cpus_dir, "weight_max", data->cpu_max);
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ATTRIBUTE(cpus_dir, "weight_cur", data->cpu_shares);
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/* memory information */
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mem_dir = hypfs_mkdir(guest_dir, "mem");
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if (IS_ERR(mem_dir))
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return PTR_ERR(mem_dir);
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ATTRIBUTE(mem_dir, "min_KiB", data->mem_min_kb);
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ATTRIBUTE(mem_dir, "max_KiB", data->mem_max_kb);
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ATTRIBUTE(mem_dir, "used_KiB", data->mem_used_kb);
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ATTRIBUTE(mem_dir, "share_KiB", data->mem_share_kb);
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/* samples */
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samples_dir = hypfs_mkdir(guest_dir, "samples");
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if (IS_ERR(samples_dir))
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return PTR_ERR(samples_dir);
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ATTRIBUTE(samples_dir, "cpu_using", data->cpu_use_samp);
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ATTRIBUTE(samples_dir, "cpu_delay", data->cpu_delay_samp);
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ATTRIBUTE(samples_dir, "mem_delay", data->page_wait_samp);
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ATTRIBUTE(samples_dir, "idle", data->idle_samp);
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ATTRIBUTE(samples_dir, "other", data->other_samp);
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ATTRIBUTE(samples_dir, "total", data->total_samp);
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return 0;
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}
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int hypfs_vm_create_files(struct dentry *root)
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{
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struct dentry *dir, *file;
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struct diag2fc_data *data;
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unsigned int count = 0;
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int rc, i;
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data = diag2fc_store(diag2fc_guest_query, &count, 0);
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if (IS_ERR(data))
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return PTR_ERR(data);
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/* Hypervisor Info */
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dir = hypfs_mkdir(root, "hyp");
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if (IS_ERR(dir)) {
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rc = PTR_ERR(dir);
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goto failed;
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}
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file = hypfs_create_str(dir, "type", "z/VM Hypervisor");
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if (IS_ERR(file)) {
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rc = PTR_ERR(file);
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goto failed;
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}
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/* physical cpus */
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dir = hypfs_mkdir(root, "cpus");
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if (IS_ERR(dir)) {
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rc = PTR_ERR(dir);
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goto failed;
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}
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file = hypfs_create_u64(dir, "count", data->lcpus);
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if (IS_ERR(file)) {
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rc = PTR_ERR(file);
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goto failed;
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}
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/* guests */
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dir = hypfs_mkdir(root, "systems");
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if (IS_ERR(dir)) {
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rc = PTR_ERR(dir);
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goto failed;
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}
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for (i = 0; i < count; i++) {
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rc = hypfs_vm_create_guest(dir, &data[i]);
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if (rc)
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goto failed;
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}
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diag2fc_free(data);
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return 0;
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failed:
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diag2fc_free(data);
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return rc;
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}
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