diff options
| -rw-r--r-- | arch/s390/mm/extmem.c | 106 | ||||
| -rw-r--r-- | drivers/s390/block/dcssblk.c | 72 |
2 files changed, 76 insertions, 102 deletions
diff --git a/arch/s390/mm/extmem.c b/arch/s390/mm/extmem.c index 580fc64cc73..5c845712960 100644 --- a/arch/s390/mm/extmem.c +++ b/arch/s390/mm/extmem.c @@ -7,6 +7,9 @@ * (C) IBM Corporation 2002-2004 */ +#define KMSG_COMPONENT "extmem" +#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt + #include <linux/kernel.h> #include <linux/string.h> #include <linux/spinlock.h> @@ -24,19 +27,6 @@ #include <asm/cpcmd.h> #include <asm/setup.h> -#define DCSS_DEBUG /* Debug messages on/off */ - -#define DCSS_NAME "extmem" -#ifdef DCSS_DEBUG -#define PRINT_DEBUG(x...) printk(KERN_DEBUG DCSS_NAME " debug:" x) -#else -#define PRINT_DEBUG(x...) do {} while (0) -#endif -#define PRINT_INFO(x...) printk(KERN_INFO DCSS_NAME " info:" x) -#define PRINT_WARN(x...) printk(KERN_WARNING DCSS_NAME " warning:" x) -#define PRINT_ERR(x...) printk(KERN_ERR DCSS_NAME " error:" x) - - #define DCSS_LOADSHR 0x00 #define DCSS_LOADNSR 0x04 #define DCSS_PURGESEG 0x08 @@ -286,7 +276,7 @@ query_segment_type (struct dcss_segment *seg) goto out_free; } if (diag_cc > 1) { - PRINT_WARN ("segment_type: diag returned error %ld\n", vmrc); + pr_warning("Querying a DCSS type failed with rc=%ld\n", vmrc); rc = dcss_diag_translate_rc (vmrc); goto out_free; } @@ -368,7 +358,6 @@ query_segment_type (struct dcss_segment *seg) * -EIO : could not perform query diagnose * -ENOENT : no such segment * -ENOTSUPP: multi-part segment cannot be used with linux - * -ENOSPC : segment cannot be used (overlaps with storage) * -ENOMEM : out of memory * 0 .. 6 : type of segment as defined in include/asm-s390/extmem.h */ @@ -480,9 +469,8 @@ __segment_load (char *name, int do_nonshared, unsigned long *addr, unsigned long goto out_resource; } if (diag_cc > 1) { - PRINT_WARN ("segment_load: could not load segment %s - " - "diag returned error (%ld)\n", - name, end_addr); + pr_warning("Loading DCSS %s failed with rc=%ld\n", name, + end_addr); rc = dcss_diag_translate_rc(end_addr); dcss_diag(&purgeseg_scode, seg->dcss_name, &dummy, &dummy); @@ -496,15 +484,13 @@ __segment_load (char *name, int do_nonshared, unsigned long *addr, unsigned long *addr = seg->start_addr; *end = seg->end; if (do_nonshared) - PRINT_INFO ("segment_load: loaded segment %s range %p .. %p " - "type %s in non-shared mode\n", name, - (void*)seg->start_addr, (void*)seg->end, - segtype_string[seg->vm_segtype]); + pr_info("DCSS %s of range %p to %p and type %s loaded as " + "exclusive-writable\n", name, (void*) seg->start_addr, + (void*) seg->end, segtype_string[seg->vm_segtype]); else { - PRINT_INFO ("segment_load: loaded segment %s range %p .. %p " - "type %s in shared mode\n", name, - (void*)seg->start_addr, (void*)seg->end, - segtype_string[seg->vm_segtype]); + pr_info("DCSS %s of range %p to %p and type %s loaded in " + "shared access mode\n", name, (void*) seg->start_addr, + (void*) seg->end, segtype_string[seg->vm_segtype]); } goto out; out_resource: @@ -593,14 +579,14 @@ segment_modify_shared (char *name, int do_nonshared) goto out_unlock; } if (do_nonshared == seg->do_nonshared) { - PRINT_INFO ("segment_modify_shared: not reloading segment %s" - " - already in requested mode\n",name); + pr_info("DCSS %s is already in the requested access " + "mode\n", name); rc = 0; goto out_unlock; } if (atomic_read (&seg->ref_count) != 1) { - PRINT_WARN ("segment_modify_shared: not reloading segment %s - " - "segment is in use by other driver(s)\n",name); + pr_warning("DCSS %s is in use and cannot be reloaded\n", + name); rc = -EAGAIN; goto out_unlock; } @@ -613,8 +599,8 @@ segment_modify_shared (char *name, int do_nonshared) seg->res->flags |= IORESOURCE_READONLY; if (request_resource(&iomem_resource, seg->res)) { - PRINT_WARN("segment_modify_shared: could not reload segment %s" - " - overlapping resources\n", name); + pr_warning("DCSS %s overlaps with used memory resources " + "and cannot be reloaded\n", name); rc = -EBUSY; kfree(seg->res); goto out_del_mem; @@ -632,9 +618,8 @@ segment_modify_shared (char *name, int do_nonshared) goto out_del_res; } if (diag_cc > 1) { - PRINT_WARN ("segment_modify_shared: could not reload segment %s" - " - diag returned error (%ld)\n", - name, end_addr); + pr_warning("Reloading DCSS %s failed with rc=%ld\n", name, + end_addr); rc = dcss_diag_translate_rc(end_addr); goto out_del_res; } @@ -673,8 +658,7 @@ segment_unload(char *name) mutex_lock(&dcss_lock); seg = segment_by_name (name); if (seg == NULL) { - PRINT_ERR ("could not find segment %s in segment_unload, " - "please report to linux390@de.ibm.com\n",name); + pr_err("Unloading unknown DCSS %s failed\n", name); goto out_unlock; } if (atomic_dec_return(&seg->ref_count) != 0) @@ -709,8 +693,7 @@ segment_save(char *name) seg = segment_by_name (name); if (seg == NULL) { - PRINT_ERR("could not find segment %s in segment_save, please " - "report to linux390@de.ibm.com\n", name); + pr_err("Saving unknown DCSS %s failed\n", name); goto out; } @@ -727,14 +710,14 @@ segment_save(char *name) response = 0; cpcmd(cmd1, NULL, 0, &response); if (response) { - PRINT_ERR("segment_save: DEFSEG failed with response code %i\n", - response); + pr_err("Saving a DCSS failed with DEFSEG response code " + "%i\n", response); goto out; } cpcmd(cmd2, NULL, 0, &response); if (response) { - PRINT_ERR("segment_save: SAVESEG failed with response code %i\n", - response); + pr_err("Saving a DCSS failed with SAVESEG response code " + "%i\n", response); goto out; } out: @@ -749,44 +732,41 @@ void segment_warning(int rc, char *seg_name) { switch (rc) { case -ENOENT: - PRINT_WARN("cannot load/query segment %s, " - "does not exist\n", seg_name); + pr_err("DCSS %s cannot be loaded or queried\n", seg_name); break; case -ENOSYS: - PRINT_WARN("cannot load/query segment %s, " - "not running on VM\n", seg_name); + pr_err("DCSS %s cannot be loaded or queried without " + "z/VM\n", seg_name); break; case -EIO: - PRINT_WARN("cannot load/query segment %s, " - "hardware error\n", seg_name); + pr_err("Loading or querying DCSS %s resulted in a " + "hardware error\n", seg_name); break; case -ENOTSUPP: - PRINT_WARN("cannot load/query segment %s, " - "is a multi-part segment\n", seg_name); + pr_err("DCSS %s has multiple page ranges and cannot be " + "loaded or queried\n", seg_name); break; case -ENOSPC: - PRINT_WARN("cannot load/query segment %s, " - "overlaps with storage\n", seg_name); + pr_err("DCSS %s overlaps with used storage and cannot " + "be loaded\n", seg_name); break; case -EBUSY: - PRINT_WARN("cannot load/query segment %s, " - "overlaps with already loaded dcss\n", seg_name); + pr_err("%s needs used memory resources and cannot be " + "loaded or queried\n", seg_name); break; case -EPERM: - PRINT_WARN("cannot load/query segment %s, " - "already loaded in incompatible mode\n", seg_name); + pr_err("DCSS %s is already loaded in a different access " + "mode\n", seg_name); break; case -ENOMEM: - PRINT_WARN("cannot load/query segment %s, " - "out of memory\n", seg_name); + pr_err("There is not enough memory to load or query " + "DCSS %s\n", seg_name); break; case -ERANGE: - PRINT_WARN("cannot load/query segment %s, " - "exceeds kernel mapping range\n", seg_name); + pr_err("DCSS %s exceeds the kernel mapping range (%lu) " + "and cannot be loaded\n", seg_name, VMEM_MAX_PHYS); break; default: - PRINT_WARN("cannot load/query segment %s, " - "return value %i\n", seg_name, rc); break; } } diff --git a/drivers/s390/block/dcssblk.c b/drivers/s390/block/dcssblk.c index b1b204c448e..26ffc6ab441 100644 --- a/drivers/s390/block/dcssblk.c +++ b/drivers/s390/block/dcssblk.c @@ -4,6 +4,9 @@ * Authors: Carsten Otte, Stefan Weinhuber, Gerald Schaefer */ +#define KMSG_COMPONENT "dcssblk" +#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt + #include <linux/module.h> #include <linux/moduleparam.h> #include <linux/ctype.h> @@ -17,21 +20,11 @@ #include <linux/interrupt.h> #include <asm/s390_rdev.h> -//#define DCSSBLK_DEBUG /* Debug messages on/off */ #define DCSSBLK_NAME "dcssblk" #define DCSSBLK_MINORS_PER_DISK 1 #define DCSSBLK_PARM_LEN 400 #define DCSS_BUS_ID_SIZE 20 -#ifdef DCSSBLK_DEBUG -#define PRINT_DEBUG(x...) printk(KERN_DEBUG DCSSBLK_NAME " debug: " x) -#else -#define PRINT_DEBUG(x...) do {} while (0) -#endif -#define PRINT_INFO(x...) printk(KERN_INFO DCSSBLK_NAME " info: " x) -#define PRINT_WARN(x...) printk(KERN_WARNING DCSSBLK_NAME " warning: " x) -#define PRINT_ERR(x...) printk(KERN_ERR DCSSBLK_NAME " error: " x) - static int dcssblk_open(struct block_device *bdev, fmode_t mode); static int dcssblk_release(struct gendisk *disk, fmode_t mode); static int dcssblk_make_request(struct request_queue *q, struct bio *bio); @@ -262,10 +255,9 @@ dcssblk_is_continuous(struct dcssblk_dev_info *dev_info) /* check continuity */ for (i = 0; i < dev_info->num_of_segments - 1; i++) { if ((sort_list[i].end + 1) != sort_list[i+1].start) { - PRINT_ERR("Segment %s is not contiguous with " - "segment %s\n", - sort_list[i].segment_name, - sort_list[i+1].segment_name); + pr_err("Adjacent DCSSs %s and %s are not " + "contiguous\n", sort_list[i].segment_name, + sort_list[i+1].segment_name); rc = -EINVAL; goto out; } @@ -276,10 +268,10 @@ dcssblk_is_continuous(struct dcssblk_dev_info *dev_info) !(sort_list[i+1].segment_type & SEGMENT_EXCLUSIVE) || (sort_list[i+1].segment_type == SEG_TYPE_ER)) { - PRINT_ERR("Segment %s has different type from " - "segment %s\n", - sort_list[i].segment_name, - sort_list[i+1].segment_name); + pr_err("DCSS %s and DCSS %s have " + "incompatible types\n", + sort_list[i].segment_name, + sort_list[i+1].segment_name); rc = -EINVAL; goto out; } @@ -381,8 +373,9 @@ dcssblk_shared_store(struct device *dev, struct device_attribute *attr, const ch } else if (inbuf[0] == '0') { /* reload segments in exclusive mode */ if (dev_info->segment_type == SEG_TYPE_SC) { - PRINT_ERR("Segment type SC (%s) cannot be loaded in " - "non-shared mode\n", dev_info->segment_name); + pr_err("DCSS %s is of type SC and cannot be " + "loaded as exclusive-writable\n", + dev_info->segment_name); rc = -EINVAL; goto out; } @@ -405,9 +398,8 @@ dcssblk_shared_store(struct device *dev, struct device_attribute *attr, const ch goto out; removeseg: - PRINT_ERR("Could not reload segment(s) of the device %s, removing " - "segment(s) now!\n", - dev_info->segment_name); + pr_err("DCSS device %s is removed after a failed access mode " + "change\n", dev_info->segment_name); temp = entry; list_for_each_entry(entry, &dev_info->seg_list, lh) { if (entry != temp) @@ -455,17 +447,17 @@ dcssblk_save_store(struct device *dev, struct device_attribute *attr, const char if (inbuf[0] == '1') { if (atomic_read(&dev_info->use_count) == 0) { // device is idle => we save immediately - PRINT_INFO("Saving segment(s) of the device %s\n", - dev_info->segment_name); + pr_info("All DCSSs that map to device %s are " + "saved\n", dev_info->segment_name); list_for_each_entry(entry, &dev_info->seg_list, lh) { segment_save(entry->segment_name); } } else { // device is busy => we save it when it becomes // idle in dcssblk_release - PRINT_INFO("Device %s is currently busy, segment(s) " - "will be saved when it becomes idle...\n", - dev_info->segment_name); + pr_info("Device %s is in use, its DCSSs will be " + "saved when it becomes idle\n", + dev_info->segment_name); dev_info->save_pending = 1; } } else if (inbuf[0] == '0') { @@ -473,9 +465,9 @@ dcssblk_save_store(struct device *dev, struct device_attribute *attr, const char // device is busy & the user wants to undo his save // request dev_info->save_pending = 0; - PRINT_INFO("Pending save for segment(s) of the device " - "%s deactivated\n", - dev_info->segment_name); + pr_info("A pending save request for device %s " + "has been canceled\n", + dev_info->segment_name); } } else { up_write(&dcssblk_devices_sem); @@ -615,9 +607,8 @@ dcssblk_add_store(struct device *dev, struct device_attribute *attr, const char seg_byte_size = (dev_info->end - dev_info->start + 1); set_capacity(dev_info->gd, seg_byte_size >> 9); // size in sectors - PRINT_INFO("Loaded segment(s) %s, size = %lu Byte, " - "capacity = %lu (512 Byte) sectors\n", local_buf, - seg_byte_size, seg_byte_size >> 9); + pr_info("Loaded %s with total size %lu bytes and capacity %lu " + "sectors\n", local_buf, seg_byte_size, seg_byte_size >> 9); dev_info->save_pending = 0; dev_info->is_shared = 1; @@ -745,13 +736,15 @@ dcssblk_remove_store(struct device *dev, struct device_attribute *attr, const ch dev_info = dcssblk_get_device_by_name(local_buf); if (dev_info == NULL) { up_write(&dcssblk_devices_sem); - PRINT_WARN("Device %s is not loaded!\n", local_buf); + pr_warning("Device %s cannot be removed because it is not a " + "known device\n", local_buf); rc = -ENODEV; goto out_buf; } if (atomic_read(&dev_info->use_count) != 0) { up_write(&dcssblk_devices_sem); - PRINT_WARN("Device %s is in use!\n", local_buf); + pr_warning("Device %s cannot be removed while it is in " + "use\n", local_buf); rc = -EBUSY; goto out_buf; } @@ -808,8 +801,8 @@ dcssblk_release(struct gendisk *disk, fmode_t mode) down_write(&dcssblk_devices_sem); if (atomic_dec_and_test(&dev_info->use_count) && (dev_info->save_pending)) { - PRINT_INFO("Device %s became idle and is being saved now\n", - dev_info->segment_name); + pr_info("Device %s has become idle and is being saved " + "now\n", dev_info->segment_name); list_for_each_entry(entry, &dev_info->seg_list, lh) { segment_save(entry->segment_name); } @@ -852,7 +845,8 @@ dcssblk_make_request(struct request_queue *q, struct bio *bio) case SEG_TYPE_SC: /* cannot write to these segments */ if (bio_data_dir(bio) == WRITE) { - PRINT_WARN("rejecting write to ro device %s\n", + pr_warning("Writing to %s failed because it " + "is a read-only device\n", dev_name(&dev_info->dev)); goto fail; } |