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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ledtrig-disk.c (1228B)

      1// SPDX-License-Identifier: GPL-2.0-only
      2/*
      3 * LED Disk Activity Trigger
      4 *
      5 * Copyright 2006 Openedhand Ltd.
      6 *
      7 * Author: Richard Purdie <rpurdie@openedhand.com>
      8 */
      9
     10#include <linux/kernel.h>
     11#include <linux/init.h>
     12#include <linux/leds.h>
     13
     14#define BLINK_DELAY 30
     15
     16DEFINE_LED_TRIGGER(ledtrig_disk);
     17DEFINE_LED_TRIGGER(ledtrig_disk_read);
     18DEFINE_LED_TRIGGER(ledtrig_disk_write);
     19DEFINE_LED_TRIGGER(ledtrig_ide);
     20
     21void ledtrig_disk_activity(bool write)
     22{
     23	unsigned long blink_delay = BLINK_DELAY;
     24
     25	led_trigger_blink_oneshot(ledtrig_disk,
     26				  &blink_delay, &blink_delay, 0);
     27	led_trigger_blink_oneshot(ledtrig_ide,
     28				  &blink_delay, &blink_delay, 0);
     29	if (write)
     30		led_trigger_blink_oneshot(ledtrig_disk_write,
     31					  &blink_delay, &blink_delay, 0);
     32	else
     33		led_trigger_blink_oneshot(ledtrig_disk_read,
     34					  &blink_delay, &blink_delay, 0);
     35}
     36EXPORT_SYMBOL(ledtrig_disk_activity);
     37
     38static int __init ledtrig_disk_init(void)
     39{
     40	led_trigger_register_simple("disk-activity", &ledtrig_disk);
     41	led_trigger_register_simple("disk-read", &ledtrig_disk_read);
     42	led_trigger_register_simple("disk-write", &ledtrig_disk_write);
     43	led_trigger_register_simple("ide-disk", &ledtrig_ide);
     44
     45	return 0;
     46}
     47device_initcall(ledtrig_disk_init);