cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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watchdog_hrtimer_pretimeout.c (1255B)

      1// SPDX-License-Identifier: GPL-2.0
      2/*
      3 * (c) Copyright 2021 Hewlett Packard Enterprise Development LP.
      4 */
      5
      6#include <linux/hrtimer.h>
      7#include <linux/watchdog.h>
      8
      9#include "watchdog_core.h"
     10#include "watchdog_pretimeout.h"
     11
     12static enum hrtimer_restart watchdog_hrtimer_pretimeout(struct hrtimer *timer)
     13{
     14	struct watchdog_core_data *wd_data;
     15
     16	wd_data = container_of(timer, struct watchdog_core_data, pretimeout_timer);
     17
     18	watchdog_notify_pretimeout(wd_data->wdd);
     19	return HRTIMER_NORESTART;
     20}
     21
     22void watchdog_hrtimer_pretimeout_init(struct watchdog_device *wdd)
     23{
     24	struct watchdog_core_data *wd_data = wdd->wd_data;
     25
     26	hrtimer_init(&wd_data->pretimeout_timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
     27	wd_data->pretimeout_timer.function = watchdog_hrtimer_pretimeout;
     28}
     29
     30void watchdog_hrtimer_pretimeout_start(struct watchdog_device *wdd)
     31{
     32	if (!(wdd->info->options & WDIOF_PRETIMEOUT) &&
     33	    !watchdog_pretimeout_invalid(wdd, wdd->pretimeout))
     34		hrtimer_start(&wdd->wd_data->pretimeout_timer,
     35			      ktime_set(wdd->timeout - wdd->pretimeout, 0),
     36			      HRTIMER_MODE_REL);
     37	else
     38		hrtimer_cancel(&wdd->wd_data->pretimeout_timer);
     39}
     40
     41void watchdog_hrtimer_pretimeout_stop(struct watchdog_device *wdd)
     42{
     43	hrtimer_cancel(&wdd->wd_data->pretimeout_timer);
     44}