Release 4.7 drivers/s390/block/scm_blk.c

Directory: drivers/s390/block
/*
 * Block driver for s390 storage class memory.
 *
 * Copyright IBM Corp. 2012
 * Author(s): Sebastian Ott <sebott@linux.vnet.ibm.com>
 */


#define KMSG_COMPONENT "scm_block"

#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt

#include <linux/interrupt.h>
#include <linux/spinlock.h>
#include <linux/mempool.h>
#include <linux/module.h>
#include <linux/blkdev.h>
#include <linux/genhd.h>
#include <linux/slab.h>
#include <linux/list.h>
#include <asm/eadm.h>
#include "scm_blk.h"


debug_info_t *scm_debug;

static int scm_major;

static mempool_t *aidaw_pool;
static DEFINE_SPINLOCK(list_lock);
static LIST_HEAD(inactive_requests);

static unsigned int nr_requests = 64;

static unsigned int nr_requests_per_io = 8;

static atomic_t nr_devices = ATOMIC_INIT(0);
module_param(nr_requests, uint, S_IRUGO);
MODULE_PARM_DESC(nr_requests, "Number of parallel requests.");

module_param(nr_requests_per_io, uint, S_IRUGO);
MODULE_PARM_DESC(nr_requests_per_io, "Number of requests per IO.");

MODULE_DESCRIPTION("Block driver for s390 storage class memory.");
MODULE_LICENSE("GPL");
MODULE_ALIAS("scm:scmdev*");



static void __scm_free_rq(struct scm_request *scmrq)
{
	struct aob_rq_header *aobrq = to_aobrq(scmrq);

	free_page((unsigned long) scmrq->aob);
	__scm_free_rq_cluster(scmrq);
	kfree(scmrq->request);
	kfree(aobrq);
}

Contributors
Person Tokens Prop Commits CommitProp
sebastian ott sebastian ott 49 100.00% 3 100.00%
Total 49 100.00% 3 100.00%



static void scm_free_rqs(void)
{
	struct list_head *iter, *safe;
	struct scm_request *scmrq;

	spin_lock_irq(&list_lock);
	list_for_each_safe(iter, safe, &inactive_requests) {
		scmrq = list_entry(iter, struct scm_request, list);
		list_del(&scmrq->list);
		__scm_free_rq(scmrq);
	}
	spin_unlock_irq(&list_lock);

	mempool_destroy(aidaw_pool);
}

Contributors
Person Tokens Prop Commits CommitProp
sebastian ott sebastian ott 73 100.00% 2 100.00%
Total 73 100.00% 2 100.00%



static int __scm_alloc_rq(void)
{
	struct aob_rq_header *aobrq;
	struct scm_request *scmrq;

	aobrq = kzalloc(sizeof(*aobrq) + sizeof(*scmrq), GFP_KERNEL);
	if (!aobrq)
		return -ENOMEM;

	scmrq = (void *) aobrq->data;
	scmrq->aob = (void *) get_zeroed_page(GFP_DMA);
	if (!scmrq->aob)
		goto free;

	scmrq->request = kcalloc(nr_requests_per_io, sizeof(scmrq->request[0]),
				 GFP_KERNEL);
	if (!scmrq->request)
		goto free;

	if (__scm_alloc_rq_cluster(scmrq))
		goto free;

	INIT_LIST_HEAD(&scmrq->list);
	spin_lock_irq(&list_lock);
	list_add(&scmrq->list, &inactive_requests);
	spin_unlock_irq(&list_lock);

	return 0;
free:
	__scm_free_rq(scmrq);
	return -ENOMEM;
}

Contributors
Person Tokens Prop Commits CommitProp
sebastian ott sebastian ott 165 100.00% 3 100.00%
Total 165 100.00% 3 100.00%



static int scm_alloc_rqs(unsigned int nrqs)
{
	int ret = 0;

	aidaw_pool = mempool_create_page_pool(max(nrqs/8, 1U), 0);
	if (!aidaw_pool)
		return -ENOMEM;

	while (nrqs-- && !ret)
		ret = __scm_alloc_rq();

	return ret;
}

Contributors
Person Tokens Prop Commits CommitProp
sebastian ott sebastian ott 56 100.00% 2 100.00%
Total 56 100.00% 2 100.00%



static struct scm_request *scm_request_fetch(void)
{
	struct scm_request *scmrq = NULL;

	spin_lock(&list_lock);
	if (list_empty(&inactive_requests))
		goto out;
	scmrq = list_first_entry(&inactive_requests, struct scm_request, list);
	list_del(&scmrq->list);
out:
	spin_unlock(&list_lock);
	return scmrq;
}

Contributors
Person Tokens Prop Commits CommitProp
sebastian ott sebastian ott 66 100.00% 1 100.00%
Total 66 100.00% 1 100.00%



static void scm_request_done(struct scm_request *scmrq)
{
	unsigned long flags;
	struct msb *msb;
	u64 aidaw;
	int i;

	for (i = 0; i < nr_requests_per_io && scmrq->request[i]; i++) {
		msb = &scmrq->aob->msb[i];
		aidaw = msb->data_addr;

		if ((msb->flags & MSB_FLAG_IDA) && aidaw &&
		    IS_ALIGNED(aidaw, PAGE_SIZE))
			mempool_free(virt_to_page(aidaw), aidaw_pool);
	}

	spin_lock_irqsave(&list_lock, flags);
	list_add(&scmrq->list, &inactive_requests);
	spin_unlock_irqrestore(&list_lock, flags);
}

Contributors
Person Tokens Prop Commits CommitProp
sebastian ott sebastian ott 122 100.00% 5 100.00%
Total 122 100.00% 5 100.00%



static bool scm_permit_request(struct scm_blk_dev *bdev, struct request *req)
{
	return rq_data_dir(req) != WRITE || bdev->state != SCM_WR_PROHIBIT;
}

Contributors
Person Tokens Prop Commits CommitProp
sebastian ott sebastian ott 30 100.00% 1 100.00%
Total 30 100.00% 1 100.00%



static inline struct aidaw *scm_aidaw_alloc(void)
{
	struct page *page = mempool_alloc(aidaw_pool, GFP_ATOMIC);

	return page ? page_address(page) : NULL;
}

Contributors
Person Tokens Prop Commits CommitProp
sebastian ott sebastian ott 33 100.00% 2 100.00%
Total 33 100.00% 2 100.00%



static inline unsigned long scm_aidaw_bytes(struct aidaw *aidaw)
{
	unsigned long _aidaw = (unsigned long) aidaw;
	unsigned long bytes = ALIGN(_aidaw, PAGE_SIZE) - _aidaw;

	return (bytes / sizeof(*aidaw)) * PAGE_SIZE;
}

Contributors
Person Tokens Prop Commits CommitProp
sebastian ott sebastian ott 49 100.00% 1 100.00%
Total 49 100.00% 1 100.00%



struct aidaw *scm_aidaw_fetch(struct scm_request *scmrq, unsigned int bytes)
{
	struct aidaw *aidaw;

	if (scm_aidaw_bytes(scmrq->next_aidaw) >= bytes)
		return scmrq->next_aidaw;

	aidaw = scm_aidaw_alloc();
	if (aidaw)
		memset(aidaw, 0, PAGE_SIZE);
	return aidaw;
}

Contributors
Person Tokens Prop Commits CommitProp
sebastian ott sebastian ott 58 100.00% 1 100.00%
Total 58 100.00% 1 100.00%



static int scm_request_prepare(struct scm_request *scmrq)
{
	struct scm_blk_dev *bdev = scmrq->bdev;
	struct scm_device *scmdev = bdev->gendisk->private_data;
	int pos = scmrq->aob->request.msb_count;
	struct msb *msb = &scmrq->aob->msb[pos];
	struct request *req = scmrq->request[pos];
	struct req_iterator iter;
	struct aidaw *aidaw;
	struct bio_vec bv;

	aidaw = scm_aidaw_fetch(scmrq, blk_rq_bytes(req));
	if (!aidaw)
		return -ENOMEM;

	msb->bs = MSB_BS_4K;
	scmrq->aob->request.msb_count++;
	msb->scm_addr = scmdev->address + ((u64) blk_rq_pos(req) << 9);
	msb->oc = (rq_data_dir(req) == READ) ? MSB_OC_READ : MSB_OC_WRITE;
	msb->flags |= MSB_FLAG_IDA;
	msb->data_addr = (u64) aidaw;

	rq_for_each_segment(bv, req, iter) {
		WARN_ON(bv.bv_offset);
		msb->blk_count += bv.bv_len >> 12;
		aidaw->data_addr = (u64) page_address(bv.bv_page);
		aidaw++;
	}

	scmrq->next_aidaw = aidaw;
	return 0;
}

Contributors
Person Tokens Prop Commits CommitProp
sebastian ott sebastian ott 220 98.65% 4 80.00%
kent overstreet kent overstreet 3 1.35% 1 20.00%
Total 223 100.00% 5 100.00%



static inline void scm_request_set(struct scm_request *scmrq,
				   struct request *req)
{
	scmrq->request[scmrq->aob->request.msb_count] = req;
}

Contributors
Person Tokens Prop Commits CommitProp
sebastian ott sebastian ott 32 100.00% 1 100.00%
Total 32 100.00% 1 100.00%



static inline void scm_request_init(struct scm_blk_dev *bdev,
				    struct scm_request *scmrq)
{
	struct aob_rq_header *aobrq = to_aobrq(scmrq);
	struct aob *aob = scmrq->aob;

	memset(scmrq->request, 0,
	       nr_requests_per_io * sizeof(scmrq->request[0]));
	memset(aob, 0, sizeof(*aob));
	aobrq->scmdev = bdev->scmdev;
	aob->request.cmd_code = ARQB_CMD_MOVE;
	aob->request.data = (u64) aobrq;
	scmrq->bdev = bdev;
	scmrq->retries = 4;
	scmrq->error = 0;
	/* We don't use all msbs - place aidaws at the end of the aob page. */
	scmrq->next_aidaw = (void *) &aob->msb[nr_requests_per_io];
	scm_request_cluster_init(scmrq);
}

Contributors
Person Tokens Prop Commits CommitProp
sebastian ott sebastian ott 137 100.00% 5 100.00%
Total 137 100.00% 5 100.00%



static void scm_ensure_queue_restart(struct scm_blk_dev *bdev)
{
	if (atomic_read(&bdev->queued_reqs)) {
		/* Queue restart is triggered by the next interrupt. */
		return;
	}
	blk_delay_queue(bdev->rq, SCM_QUEUE_DELAY);
}

Contributors
Person Tokens Prop Commits CommitProp
sebastian ott sebastian ott 34 100.00% 1 100.00%
Total 34 100.00% 1 100.00%



void scm_request_requeue(struct scm_request *scmrq)
{
	struct scm_blk_dev *bdev = scmrq->bdev;
	int i;

	scm_release_cluster(scmrq);
	for (i = 0; i < nr_requests_per_io && scmrq->request[i]; i++)
		blk_requeue_request(bdev->rq, scmrq->request[i]);

	atomic_dec(&bdev->queued_reqs);
	scm_request_done(scmrq);
	scm_ensure_queue_restart(bdev);
}

Contributors
Person Tokens Prop Commits CommitProp
sebastian ott sebastian ott 79 100.00% 5 100.00%
Total 79 100.00% 5 100.00%



void scm_request_finish(struct scm_request *scmrq)
{
	struct scm_blk_dev *bdev = scmrq->bdev;
	int i;

	scm_release_cluster(scmrq);
	for (i = 0; i < nr_requests_per_io && scmrq->request[i]; i++)
		blk_end_request_all(scmrq->request[i], scmrq->error);

	atomic_dec(&bdev->queued_reqs);
	scm_request_done(scmrq);
}

Contributors
Person Tokens Prop Commits CommitProp
sebastian ott sebastian ott 74 100.00% 5 100.00%
Total 74 100.00% 5 100.00%



static int scm_request_start(struct scm_request *scmrq)
{
	struct scm_blk_dev *bdev = scmrq->bdev;
	int ret;

	atomic_inc(&bdev->queued_reqs);
	if (!scmrq->aob->request.msb_count) {
		scm_request_requeue(scmrq);
		return -EINVAL;
	}

	ret = eadm_start_aob(scmrq->aob);
	if (ret) {
		SCM_LOG(5, "no subchannel");
		scm_request_requeue(scmrq);
	}
	return ret;
}

Contributors
Person Tokens Prop Commits CommitProp
sebastian ott sebastian ott 83 100.00% 1 100.00%
Total 83 100.00% 1 100.00%



static void scm_blk_request(struct request_queue *rq)
{
	struct scm_device *scmdev = rq->queuedata;
	struct scm_blk_dev *bdev = dev_get_drvdata(&scmdev->dev);
	struct scm_request *scmrq = NULL;
	struct request *req;

	while ((req = blk_peek_request(rq))) {
		if (req->cmd_type != REQ_TYPE_FS) {
			blk_start_request(req);
			blk_dump_rq_flags(req, KMSG_COMPONENT " bad request");
			__blk_end_request_all(req, -EIO);
			continue;
		}

		if (!scm_permit_request(bdev, req))
			goto out;

		if (!scmrq) {
			scmrq = scm_request_fetch();
			if (!scmrq) {
				SCM_LOG(5, "no request");
				goto out;
			}
			scm_request_init(bdev, scmrq);
		}
		scm_request_set(scmrq, req);

		if (!scm_reserve_cluster(scmrq)) {
			SCM_LOG(5, "cluster busy");
			scm_request_set(scmrq, NULL);
			if (scmrq->aob->request.msb_count)
				goto out;

			scm_request_done(scmrq);
			return;
		}

		if (scm_need_cluster_request(scmrq)) {
			if (scmrq->aob->request.msb_count) {
				/* Start cluster requests separately. */
				scm_request_set(scmrq, NULL);
				if (scm_request_start(scmrq))
					return;
			} else {
				atomic_inc(&bdev->queued_reqs);
				blk_start_request(req);
				scm_initiate_cluster_request(scmrq);
			}
			scmrq = NULL;
			continue;
		}

		if (scm_request_prepare(scmrq)) {
			SCM_LOG(5, "aidaw alloc failed");
			scm_request_set(scmrq, NULL);
			goto out;
		}
		blk_start_request(req);

		if (scmrq->aob->request.msb_count < nr_requests_per_io)
			continue;

		if (scm_request_start(scmrq))
			return;

		scmrq = NULL;
	}
out:
	if (scmrq)
		scm_request_start(scmrq);
	else
		scm_ensure_queue_restart(bdev);
}

Contributors
Person Tokens Prop Commits CommitProp
sebastian ott sebastian ott 303 93.23% 8 88.89%
steffen maier steffen maier 22 6.77% 1 11.11%
Total 325 100.00% 9 100.00%



static void __scmrq_log_error(struct scm_request *scmrq)
{
	struct aob *aob = scmrq->aob;

	if (scmrq->error == -ETIMEDOUT)
		SCM_LOG(1, "Request timeout");
	else {
		SCM_LOG(1, "Request error");
		SCM_LOG_HEX(1, &aob->response, sizeof(aob->response));
	}
	if (scmrq->retries)
		SCM_LOG(1, "Retry request");
	else
		pr_err("An I/O operation to SCM failed with rc=%d\n",
		       scmrq->error);
}

Contributors
Person Tokens Prop Commits CommitProp
sebastian ott sebastian ott 86 100.00% 1 100.00%
Total 86 100.00% 1 100.00%



void scm_blk_irq(struct scm_device *scmdev, void *data, int error)
{
	struct scm_request *scmrq = data;
	struct scm_blk_dev *bdev = scmrq->bdev;

	scmrq->error = error;
	if (error)
		__scmrq_log_error(scmrq);

	spin_lock(&bdev->lock);
	list_add_tail(&scmrq->list, &bdev->finished_requests);
	spin_unlock(&bdev->lock);
	tasklet_hi_schedule(&bdev->tasklet);
}

Contributors
Person Tokens Prop Commits CommitProp
sebastian ott sebastian ott 85 100.00% 1 100.00%
Total 85 100.00% 1 100.00%



static void scm_blk_handle_error(struct scm_request *scmrq)
{
	struct scm_blk_dev *bdev = scmrq->bdev;
	unsigned long flags;

	if (scmrq->error != -EIO)
		goto restart;

	/* For -EIO the response block is valid. */
	switch (scmrq->aob->response.eqc) {
	case EQC_WR_PROHIBIT:
		spin_lock_irqsave(&bdev->lock, flags);
		if (bdev->state != SCM_WR_PROHIBIT)
			pr_info("%lx: Write access to the SCM increment is suspended\n",
				(unsigned long) bdev->scmdev->address);
		bdev->state = SCM_WR_PROHIBIT;
		spin_unlock_irqrestore(&bdev->lock, flags);
		goto requeue;
	default:
		break;
	}

restart:
	if (!eadm_start_aob(scmrq->aob))
		return;

requeue:
	spin_lock_irqsave(&bdev->rq_lock, flags);
	scm_request_requeue(scmrq);
	spin_unlock_irqrestore(&bdev->rq_lock, flags);
}

Contributors
Person Tokens Prop Commits CommitProp
sebastian ott sebastian ott 146 100.00% 3 100.00%
Total 146 100.00% 3 100.00%



static void scm_blk_tasklet(struct scm_blk_dev *bdev)
{
	struct scm_request *scmrq;
	unsigned long flags;

	spin_lock_irqsave(&bdev->lock, flags);
	while (!list_empty(&bdev->finished_requests)) {
		scmrq = list_first_entry(&bdev->finished_requests,
					 struct scm_request, list);
		list_del(&scmrq->list);
		spin_unlock_irqrestore(&bdev->lock, flags);

		if (scmrq->error && scmrq->retries-- > 0) {
			scm_blk_handle_error(scmrq);

			/* Request restarted or requeued, handle next. */
			spin_lock_irqsave(&bdev->lock, flags);
			continue;
		}

		if (scm_test_cluster_request(scmrq)) {
			scm_cluster_request_irq(scmrq);
			spin_lock_irqsave(&bdev->lock, flags);
			continue;
		}

		scm_request_finish(scmrq);
		spin_lock_irqsave(&bdev->lock, flags);
	}
	spin_unlock_irqrestore(&bdev->lock, flags);
	/* Look out for more requests. */
	blk_run_queue(bdev->rq);
}

Contributors
Person Tokens Prop Commits CommitProp
sebastian ott sebastian ott 166 100.00% 3 100.00%
Total 166 100.00% 3 100.00%


static const struct block_device_operations scm_blk_devops = {
	.owner = THIS_MODULE,
};



int scm_blk_dev_setup(struct scm_blk_dev *bdev, struct scm_device *scmdev)
{
	struct request_queue *rq;
	int len, ret = -ENOMEM;
	unsigned int devindex, nr_max_blk;

	devindex = atomic_inc_return(&nr_devices) - 1;
	/* scma..scmz + scmaa..scmzz */
	if (devindex > 701) {
		ret = -ENODEV;
		goto out;
	}

	bdev->scmdev = scmdev;
	bdev->state = SCM_OPER;
	spin_lock_init(&bdev->rq_lock);
	spin_lock_init(&bdev->lock);
	INIT_LIST_HEAD(&bdev->finished_requests);
	atomic_set(&bdev->queued_reqs, 0);
	tasklet_init(&bdev->tasklet,
		     (void (*)(unsigned long)) scm_blk_tasklet,
		     (unsigned long) bdev);

	rq = blk_init_queue(scm_blk_request, &bdev->rq_lock);
	if (!rq)
		goto out;

	bdev->rq = rq;
	nr_max_blk = min(scmdev->nr_max_block,
			 (unsigned int) (PAGE_SIZE / sizeof(struct aidaw)));

	blk_queue_logical_block_size(rq, 1 << 12);
	blk_queue_max_hw_sectors(rq, nr_max_blk << 3); /* 8 * 512 = blk_size */
	blk_queue_max_segments(rq, nr_max_blk);
	queue_flag_set_unlocked(QUEUE_FLAG_NONROT, rq);
	queue_flag_clear_unlocked(QUEUE_FLAG_ADD_RANDOM, rq);
	scm_blk_dev_cluster_setup(bdev);

	bdev->gendisk = alloc_disk(SCM_NR_PARTS);
	if (!bdev->gendisk)
		goto out_queue;

	rq->queuedata = scmdev;
	bdev->gendisk->driverfs_dev = &scmdev->dev;
	bdev->gendisk->private_data = scmdev;
	bdev->gendisk->fops = &scm_blk_devops;
	bdev->gendisk->queue = rq;
	bdev->gendisk->major = scm_major;
	bdev->gendisk->first_minor = devindex * SCM_NR_PARTS;

	len = snprintf(bdev->gendisk->disk_name, DISK_NAME_LEN, "scm");
	if (devindex > 25) {
		len += snprintf(bdev->gendisk->disk_name + len,
				DISK_NAME_LEN - len, "%c",
				'a' + (devindex / 26) - 1);
		devindex = devindex % 26;
	}
	snprintf(bdev->gendisk->disk_name + len, DISK_NAME_LEN - len, "%c",
		 'a' + devindex);

	/* 512 byte sectors */
	set_capacity(bdev->gendisk, scmdev->size >> 9);
	add_disk(bdev->gendisk);
	return 0;

out_queue:
	blk_cleanup_queue(rq);
out:
	atomic_dec(&nr_devices);
	return ret;
}

Contributors
Person Tokens Prop Commits CommitProp
sebastian ott sebastian ott 420 98.36% 3 75.00%
mike snitzer mike snitzer 7 1.64% 1 25.00%
Total 427 100.00% 4 100.00%



void scm_blk_dev_cleanup(struct scm_blk_dev *bdev)
{
	tasklet_kill(&bdev->tasklet);
	del_gendisk(bdev->gendisk);
	blk_cleanup_queue(bdev->gendisk->queue);
	put_disk(bdev->gendisk);
}

Contributors
Person Tokens Prop Commits CommitProp
sebastian ott sebastian ott 41 100.00% 1 100.00%
Total 41 100.00% 1 100.00%



void scm_blk_set_available(struct scm_blk_dev *bdev)
{
	unsigned long flags;

	spin_lock_irqsave(&bdev->lock, flags);
	if (bdev->state == SCM_WR_PROHIBIT)
		pr_info("%lx: Write access to the SCM increment is restored\n",
			(unsigned long) bdev->scmdev->address);
	bdev->state = SCM_OPER;
	spin_unlock_irqrestore(&bdev->lock, flags);
}

Contributors
Person Tokens Prop Commits CommitProp
sebastian ott sebastian ott 63 100.00% 2 100.00%
Total 63 100.00% 2 100.00%



static bool __init scm_blk_params_valid(void)
{
	if (!nr_requests_per_io || nr_requests_per_io > 64)
		return false;

	return scm_cluster_size_valid();
}

Contributors
Person Tokens Prop Commits CommitProp
sebastian ott sebastian ott 25 100.00% 1 100.00%
Total 25 100.00% 1 100.00%



static int __init scm_blk_init(void)
{
	int ret = -EINVAL;

	if (!scm_blk_params_valid())
		goto out;

	ret = register_blkdev(0, "scm");
	if (ret < 0)
		goto out;

	scm_major = ret;
	ret = scm_alloc_rqs(nr_requests);
	if (ret)
		goto out_free;

	scm_debug = debug_register("scm_log", 16, 1, 16);
	if (!scm_debug) {
		ret = -ENOMEM;
		goto out_free;
	}

	debug_register_view(scm_debug, &debug_hex_ascii_view);
	debug_set_level(scm_debug, 2);

	ret = scm_drv_init();
	if (ret)
		goto out_dbf;

	return ret;

out_dbf:
	debug_unregister(scm_debug);
out_free:
	scm_free_rqs();
	unregister_blkdev(scm_major, "scm");
out:
	return ret;
}
Contributors
Person Tokens Prop Commits CommitProp
sebastian ott sebastian ott 129 90.85% 4 80.00%
wei yongjun wei yongjun 13 9.15% 1 20.00%
Total 142 100.00% 5 100.00%


module_init(scm_blk_init);



static void __exit scm_blk_cleanup(void)
{
	scm_drv_cleanup();
	debug_unregister(scm_debug);
	scm_free_rqs();
	unregister_blkdev(scm_major, "scm");
}
Contributors
Person Tokens Prop Commits CommitProp
sebastian ott sebastian ott 27 100.00% 1 100.00%
Total 27 100.00% 1 100.00%


module_exit(scm_blk_cleanup);
Overall Contributors
Person Tokens Prop Commits CommitProp
sebastian ott sebastian ott 3011 98.53% 12 75.00%
steffen maier steffen maier 22 0.72% 1 6.25%
wei yongjun wei yongjun 13 0.43% 1 6.25%
mike snitzer mike snitzer 7 0.23% 1 6.25%
kent overstreet kent overstreet 3 0.10% 1 6.25%
Total 3056 100.00% 16 100.00%
  Directory: drivers/s390/block

Information contained on this website is for historical information purposes only and does not indicate or represent copyright ownership.
	Person	Tokens	Prop	Commits	CommitProp
sebastian ott	sebastian ott	49	100.00%	3	100.00%
	Total	49	100.00%	3	100.00%
cregit-Linux how code gets into the kernel

Release 4.7 drivers/s390/block/scm_blk.c

Contributors

Contributors

Contributors

Contributors

Contributors

Contributors

Contributors

Contributors

Contributors

Contributors

Contributors

Contributors

Contributors

Contributors

Contributors

Contributors

Contributors

Contributors

Contributors

Contributors

Contributors

Contributors

Contributors

Contributors

Contributors

Contributors

Contributors

Contributors

Overall Contributors
