cregit-Linux how code gets into the kernel

Release 4.11 drivers/pps/clients/pps-ktimer.c

/*
 * pps-ktimer.c -- kernel timer test client
 *
 *
 * Copyright (C) 2005-2006   Rodolfo Giometti <giometti@linux.it>
 *
 *   This program is free software; you can redistribute it and/or modify
 *   it under the terms of the GNU General Public License as published by
 *   the Free Software Foundation; either version 2 of the License, or
 *   (at your option) any later version.
 *
 *   This program is distributed in the hope that it will be useful,
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *   GNU General Public License for more details.
 *
 *   You should have received a copy of the GNU General Public License
 *   along with this program; if not, write to the Free Software
 *   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */


#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt

#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/time.h>
#include <linux/timer.h>
#include <linux/pps_kernel.h>

/*
 * Global variables
 */


static struct pps_device *pps;

static struct timer_list ktimer;

/*
 * The kernel timer
 */


static void pps_ktimer_event(unsigned long ptr) { struct pps_event_time ts; /* First of all we get the time stamp... */ pps_get_ts(&ts); pps_event(pps, &ts, PPS_CAPTUREASSERT, NULL); mod_timer(&ktimer, jiffies + HZ); }

Contributors

PersonTokensPropCommitsCommitProp
Rodolfo Giometti3990.70%133.33%
Alexander Gordeev49.30%266.67%
Total43100.00%3100.00%

/* * The PPS info struct */ static struct pps_source_info pps_ktimer_info = { .name = "ktimer", .path = "", .mode = PPS_CAPTUREASSERT | PPS_OFFSETASSERT | PPS_ECHOASSERT | PPS_CANWAIT | PPS_TSFMT_TSPEC, .owner = THIS_MODULE, }; /* * Module staff */
static void __exit pps_ktimer_exit(void) { dev_info(pps->dev, "ktimer PPS source unregistered\n"); del_timer_sync(&ktimer); pps_unregister_source(pps); }

Contributors

PersonTokensPropCommitsCommitProp
Rodolfo Giometti1965.52%150.00%
Alexander Gordeev1034.48%150.00%
Total29100.00%2100.00%


static int __init pps_ktimer_init(void) { pps = pps_register_source(&pps_ktimer_info, PPS_CAPTUREASSERT | PPS_OFFSETASSERT); if (pps == NULL) { pr_err("cannot register PPS source\n"); return -ENOMEM; } setup_timer(&ktimer, pps_ktimer_event, 0); mod_timer(&ktimer, jiffies + HZ); dev_info(pps->dev, "ktimer PPS source registered\n"); return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Rodolfo Giometti5781.43%133.33%
Alexander Gordeev1318.57%266.67%
Total70100.00%3100.00%

module_init(pps_ktimer_init); module_exit(pps_ktimer_exit); MODULE_AUTHOR("Rodolfo Giometti <giometti@linux.it>"); MODULE_DESCRIPTION("dummy PPS source by using a kernel timer (just for debug)"); MODULE_LICENSE("GPL");

Overall Contributors

PersonTokensPropCommitsCommitProp
Rodolfo Giometti20584.36%125.00%
Alexander Gordeev3815.64%375.00%
Total243100.00%4100.00%
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