cregit-Linux how code gets into the kernel

Release 4.7 block/blk-mq-cpu.c

Directory: block
/*
 * CPU notifier helper code for blk-mq
 *
 * Copyright (C) 2013-2014 Jens Axboe
 */
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/blkdev.h>
#include <linux/list.h>
#include <linux/llist.h>
#include <linux/smp.h>
#include <linux/cpu.h>

#include <linux/blk-mq.h>
#include "blk-mq.h"

static LIST_HEAD(blk_mq_cpu_notify_list);
static DEFINE_RAW_SPINLOCK(blk_mq_cpu_notify_lock);


static int blk_mq_main_cpu_notify(struct notifier_block *self, unsigned long action, void *hcpu) { unsigned int cpu = (unsigned long) hcpu; struct blk_mq_cpu_notifier *notify; int ret = NOTIFY_OK; raw_spin_lock(&blk_mq_cpu_notify_lock); list_for_each_entry(notify, &blk_mq_cpu_notify_list, list) { ret = notify->notify(notify->data, action, cpu); if (ret != NOTIFY_OK) break; } raw_spin_unlock(&blk_mq_cpu_notify_lock); return ret; }

Contributors

PersonTokensPropCommitsCommitProp
jens axboejens axboe8497.67%266.67%
mike galbraithmike galbraith22.33%133.33%
Total86100.00%3100.00%


void blk_mq_register_cpu_notifier(struct blk_mq_cpu_notifier *notifier) { BUG_ON(!notifier->notify); raw_spin_lock(&blk_mq_cpu_notify_lock); list_add_tail(&notifier->list, &blk_mq_cpu_notify_list); raw_spin_unlock(&blk_mq_cpu_notify_lock); }

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PersonTokensPropCommitsCommitProp
jens axboejens axboe3995.12%150.00%
mike galbraithmike galbraith24.88%150.00%
Total41100.00%2100.00%


void blk_mq_unregister_cpu_notifier(struct blk_mq_cpu_notifier *notifier) { raw_spin_lock(&blk_mq_cpu_notify_lock); list_del(&notifier->list); raw_spin_unlock(&blk_mq_cpu_notify_lock); }

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PersonTokensPropCommitsCommitProp
jens axboejens axboe2893.33%150.00%
mike galbraithmike galbraith26.67%150.00%
Total30100.00%2100.00%


void blk_mq_init_cpu_notifier(struct blk_mq_cpu_notifier *notifier, int (*fn)(void *, unsigned long, unsigned int), void *data) { notifier->notify = fn; notifier->data = data; }

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jens axboejens axboe42100.00%2100.00%
Total42100.00%2100.00%


void __init blk_mq_cpu_init(void) { hotcpu_notifier(blk_mq_main_cpu_notify, 0); }

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jens axboejens axboe1173.33%150.00%
andrew mortonandrew morton426.67%150.00%
Total15100.00%2100.00%


Overall Contributors

PersonTokensPropCommitsCommitProp
jens axboejens axboe24695.72%360.00%
mike galbraithmike galbraith72.72%120.00%
andrew mortonandrew morton41.56%120.00%
Total257100.00%5100.00%
Directory: block
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