cregit-Linux how code gets into the kernel

Release 4.11 drivers/s390/block/scm_drv.c

/*
 * Device 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/module.h>
#include <linux/slab.h>
#include <asm/eadm.h>
#include "scm_blk.h"


static void scm_notify(struct scm_device *scmdev, enum scm_event event) { struct scm_blk_dev *bdev = dev_get_drvdata(&scmdev->dev); switch (event) { case SCM_CHANGE: pr_info("%lx: The capabilities of the SCM increment changed\n", (unsigned long) scmdev->address); SCM_LOG(2, "State changed"); SCM_LOG_STATE(2, scmdev); break; case SCM_AVAIL: SCM_LOG(2, "Increment available"); SCM_LOG_STATE(2, scmdev); scm_blk_set_available(bdev); break; } }

Contributors

PersonTokensPropCommitsCommitProp
Sebastian Ott88100.00%4100.00%
Total88100.00%4100.00%


static int scm_probe(struct scm_device *scmdev) { struct scm_blk_dev *bdev; int ret; SCM_LOG(2, "probe"); SCM_LOG_STATE(2, scmdev); if (scmdev->attrs.oper_state != OP_STATE_GOOD) return -EINVAL; bdev = kzalloc(sizeof(*bdev), GFP_KERNEL); if (!bdev) return -ENOMEM; dev_set_drvdata(&scmdev->dev, bdev); ret = scm_blk_dev_setup(bdev, scmdev); if (ret) { dev_set_drvdata(&scmdev->dev, NULL); kfree(bdev); goto out; } out: return ret; }

Contributors

PersonTokensPropCommitsCommitProp
Sebastian Ott117100.00%1100.00%
Total117100.00%1100.00%


static int scm_remove(struct scm_device *scmdev) { struct scm_blk_dev *bdev = dev_get_drvdata(&scmdev->dev); scm_blk_dev_cleanup(bdev); dev_set_drvdata(&scmdev->dev, NULL); kfree(bdev); return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Sebastian Ott47100.00%3100.00%
Total47100.00%3100.00%

static struct scm_driver scm_drv = { .drv = { .name = "scm_block", .owner = THIS_MODULE, }, .notify = scm_notify, .probe = scm_probe, .remove = scm_remove, .handler = scm_blk_irq, };
int __init scm_drv_init(void) { return scm_driver_register(&scm_drv); }

Contributors

PersonTokensPropCommitsCommitProp
Sebastian Ott15100.00%1100.00%
Total15100.00%1100.00%


void scm_drv_cleanup(void) { scm_driver_unregister(&scm_drv); }

Contributors

PersonTokensPropCommitsCommitProp
Sebastian Ott13100.00%1100.00%
Total13100.00%1100.00%


Overall Contributors

PersonTokensPropCommitsCommitProp
Sebastian Ott346100.00%6100.00%
Total346100.00%6100.00%
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