diff options
Diffstat (limited to 'ANDROID_3.4.5/arch/s390/hypfs/hypfs_vm.c')
| -rw-r--r-- | ANDROID_3.4.5/arch/s390/hypfs/hypfs_vm.c | 283 |
1 files changed, 0 insertions, 283 deletions
diff --git a/ANDROID_3.4.5/arch/s390/hypfs/hypfs_vm.c b/ANDROID_3.4.5/arch/s390/hypfs/hypfs_vm.c deleted file mode 100644 index e5479600..00000000 --- a/ANDROID_3.4.5/arch/s390/hypfs/hypfs_vm.c +++ /dev/null @@ -1,283 +0,0 @@ -/* - * Hypervisor filesystem for Linux on s390. z/VM implementation. - * - * Copyright (C) IBM Corp. 2006 - * Author(s): Michael Holzheu <holzheu@de.ibm.com> - */ - -#include <linux/types.h> -#include <linux/errno.h> -#include <linux/string.h> -#include <linux/vmalloc.h> -#include <asm/ebcdic.h> -#include <asm/timex.h> -#include "hypfs.h" - -#define NAME_LEN 8 -#define DBFS_D2FC_HDR_VERSION 0 - -static char local_guest[] = " "; -static char all_guests[] = "* "; -static char *guest_query; - -struct diag2fc_data { - __u32 version; - __u32 flags; - __u64 used_cpu; - __u64 el_time; - __u64 mem_min_kb; - __u64 mem_max_kb; - __u64 mem_share_kb; - __u64 mem_used_kb; - __u32 pcpus; - __u32 lcpus; - __u32 vcpus; - __u32 cpu_min; - __u32 cpu_max; - __u32 cpu_shares; - __u32 cpu_use_samp; - __u32 cpu_delay_samp; - __u32 page_wait_samp; - __u32 idle_samp; - __u32 other_samp; - __u32 total_samp; - char guest_name[NAME_LEN]; -}; - -struct diag2fc_parm_list { - char userid[NAME_LEN]; - char aci_grp[NAME_LEN]; - __u64 addr; - __u32 size; - __u32 fmt; -}; - -static int diag2fc(int size, char* query, void *addr) -{ - unsigned long residual_cnt; - unsigned long rc; - struct diag2fc_parm_list parm_list; - - memcpy(parm_list.userid, query, NAME_LEN); - ASCEBC(parm_list.userid, NAME_LEN); - parm_list.addr = (unsigned long) addr ; - parm_list.size = size; - parm_list.fmt = 0x02; - memset(parm_list.aci_grp, 0x40, NAME_LEN); - rc = -1; - - asm volatile( - " diag %0,%1,0x2fc\n" - "0:\n" - EX_TABLE(0b,0b) - : "=d" (residual_cnt), "+d" (rc) : "0" (&parm_list) : "memory"); - - if ((rc != 0 ) && (rc != -2)) - return rc; - else - return -residual_cnt; -} - -/* - * Allocate buffer for "query" and store diag 2fc at "offset" - */ -static void *diag2fc_store(char *query, unsigned int *count, int offset) -{ - void *data; - int size; - - do { - size = diag2fc(0, query, NULL); - if (size < 0) - return ERR_PTR(-EACCES); - data = vmalloc(size + offset); - if (!data) - return ERR_PTR(-ENOMEM); - if (diag2fc(size, query, data + offset) == 0) - break; - vfree(data); - } while (1); - *count = (size / sizeof(struct diag2fc_data)); - - return data; -} - -static void diag2fc_free(const void *data) -{ - vfree(data); -} - -#define ATTRIBUTE(sb, dir, name, member) \ -do { \ - void *rc; \ - rc = hypfs_create_u64(sb, dir, name, member); \ - if (IS_ERR(rc)) \ - return PTR_ERR(rc); \ -} while(0) - -static int hpyfs_vm_create_guest(struct super_block *sb, - struct dentry *systems_dir, - struct diag2fc_data *data) -{ - char guest_name[NAME_LEN + 1] = {}; - struct dentry *guest_dir, *cpus_dir, *samples_dir, *mem_dir; - int dedicated_flag, capped_value; - - capped_value = (data->flags & 0x00000006) >> 1; - dedicated_flag = (data->flags & 0x00000008) >> 3; - - /* guest dir */ - memcpy(guest_name, data->guest_name, NAME_LEN); - EBCASC(guest_name, NAME_LEN); - strim(guest_name); - guest_dir = hypfs_mkdir(sb, systems_dir, guest_name); - if (IS_ERR(guest_dir)) - return PTR_ERR(guest_dir); - ATTRIBUTE(sb, guest_dir, "onlinetime_us", data->el_time); - - /* logical cpu information */ - cpus_dir = hypfs_mkdir(sb, guest_dir, "cpus"); - if (IS_ERR(cpus_dir)) - return PTR_ERR(cpus_dir); - ATTRIBUTE(sb, cpus_dir, "cputime_us", data->used_cpu); - ATTRIBUTE(sb, cpus_dir, "capped", capped_value); - ATTRIBUTE(sb, cpus_dir, "dedicated", dedicated_flag); - ATTRIBUTE(sb, cpus_dir, "count", data->vcpus); - ATTRIBUTE(sb, cpus_dir, "weight_min", data->cpu_min); - ATTRIBUTE(sb, cpus_dir, "weight_max", data->cpu_max); - ATTRIBUTE(sb, cpus_dir, "weight_cur", data->cpu_shares); - - /* memory information */ - mem_dir = hypfs_mkdir(sb, guest_dir, "mem"); - if (IS_ERR(mem_dir)) - return PTR_ERR(mem_dir); - ATTRIBUTE(sb, mem_dir, "min_KiB", data->mem_min_kb); - ATTRIBUTE(sb, mem_dir, "max_KiB", data->mem_max_kb); - ATTRIBUTE(sb, mem_dir, "used_KiB", data->mem_used_kb); - ATTRIBUTE(sb, mem_dir, "share_KiB", data->mem_share_kb); - - /* samples */ - samples_dir = hypfs_mkdir(sb, guest_dir, "samples"); - if (IS_ERR(samples_dir)) - return PTR_ERR(samples_dir); - ATTRIBUTE(sb, samples_dir, "cpu_using", data->cpu_use_samp); - ATTRIBUTE(sb, samples_dir, "cpu_delay", data->cpu_delay_samp); - ATTRIBUTE(sb, samples_dir, "mem_delay", data->page_wait_samp); - ATTRIBUTE(sb, samples_dir, "idle", data->idle_samp); - ATTRIBUTE(sb, samples_dir, "other", data->other_samp); - ATTRIBUTE(sb, samples_dir, "total", data->total_samp); - return 0; -} - -int hypfs_vm_create_files(struct super_block *sb, struct dentry *root) -{ - struct dentry *dir, *file; - struct diag2fc_data *data; - unsigned int count = 0; - int rc, i; - - data = diag2fc_store(guest_query, &count, 0); - if (IS_ERR(data)) - return PTR_ERR(data); - - /* Hpervisor Info */ - dir = hypfs_mkdir(sb, root, "hyp"); - if (IS_ERR(dir)) { - rc = PTR_ERR(dir); - goto failed; - } - file = hypfs_create_str(sb, dir, "type", "z/VM Hypervisor"); - if (IS_ERR(file)) { - rc = PTR_ERR(file); - goto failed; - } - - /* physical cpus */ - dir = hypfs_mkdir(sb, root, "cpus"); - if (IS_ERR(dir)) { - rc = PTR_ERR(dir); - goto failed; - } - file = hypfs_create_u64(sb, dir, "count", data->lcpus); - if (IS_ERR(file)) { - rc = PTR_ERR(file); - goto failed; - } - - /* guests */ - dir = hypfs_mkdir(sb, root, "systems"); - if (IS_ERR(dir)) { - rc = PTR_ERR(dir); - goto failed; - } - - for (i = 0; i < count; i++) { - rc = hpyfs_vm_create_guest(sb, dir, &(data[i])); - if (rc) - goto failed; - } - diag2fc_free(data); - return 0; - -failed: - diag2fc_free(data); - return rc; -} - -struct dbfs_d2fc_hdr { - u64 len; /* Length of d2fc buffer without header */ - u16 version; /* Version of header */ - char tod_ext[16]; /* TOD clock for d2fc */ - u64 count; /* Number of VM guests in d2fc buffer */ - char reserved[30]; -} __attribute__ ((packed)); - -struct dbfs_d2fc { - struct dbfs_d2fc_hdr hdr; /* 64 byte header */ - char buf[]; /* d2fc buffer */ -} __attribute__ ((packed)); - -static int dbfs_diag2fc_create(void **data, void **data_free_ptr, size_t *size) -{ - struct dbfs_d2fc *d2fc; - unsigned int count; - - d2fc = diag2fc_store(guest_query, &count, sizeof(d2fc->hdr)); - if (IS_ERR(d2fc)) - return PTR_ERR(d2fc); - get_clock_ext(d2fc->hdr.tod_ext); - d2fc->hdr.len = count * sizeof(struct diag2fc_data); - d2fc->hdr.version = DBFS_D2FC_HDR_VERSION; - d2fc->hdr.count = count; - memset(&d2fc->hdr.reserved, 0, sizeof(d2fc->hdr.reserved)); - *data = d2fc; - *data_free_ptr = d2fc; - *size = d2fc->hdr.len + sizeof(struct dbfs_d2fc_hdr); - return 0; -} - -static struct hypfs_dbfs_file dbfs_file_2fc = { - .name = "diag_2fc", - .data_create = dbfs_diag2fc_create, - .data_free = diag2fc_free, -}; - -int hypfs_vm_init(void) -{ - if (!MACHINE_IS_VM) - return 0; - if (diag2fc(0, all_guests, NULL) > 0) - guest_query = all_guests; - else if (diag2fc(0, local_guest, NULL) > 0) - guest_query = local_guest; - else - return -EACCES; - return hypfs_dbfs_create_file(&dbfs_file_2fc); -} - -void hypfs_vm_exit(void) -{ - if (!MACHINE_IS_VM) - return; - hypfs_dbfs_remove_file(&dbfs_file_2fc); -} |