// SPDX-License-Identifier: GPL-2.0 /* * (c) Copyright 2021 Hewlett Packard Enterprise Development LP. */ #include <linux/hrtimer.h> #include <linux/watchdog.h> #include "watchdog_core.h" #include "watchdog_pretimeout.h" static enum hrtimer_restart watchdog_hrtimer_pretimeout(struct hrtimer *timer) { struct watchdog_core_data *wd_data; wd_data = container_of(timer, struct watchdog_core_data, pretimeout_timer); watchdog_notify_pretimeout(wd_data->wdd); return HRTIMER_NORESTART; } void watchdog_hrtimer_pretimeout_init(struct watchdog_device *wdd) { struct watchdog_core_data *wd_data = wdd->wd_data; hrtimer_init(&wd_data->pretimeout_timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL); wd_data->pretimeout_timer.function = watchdog_hrtimer_pretimeout; } void watchdog_hrtimer_pretimeout_start(struct watchdog_device *wdd) { if (!(wdd->info->options & WDIOF_PRETIMEOUT) && !watchdog_pretimeout_invalid(wdd, wdd->pretimeout)) hrtimer_start(&wdd->wd_data->pretimeout_timer, ktime_set(wdd->timeout - wdd->pretimeout, 0), HRTIMER_MODE_REL); else hrtimer_cancel(&wdd->wd_data->pretimeout_timer); } void watchdog_hrtimer_pretimeout_stop(struct watchdog_device *wdd) { hrtimer_cancel(&wdd->wd_data->pretimeout_timer); }