pktgen.c (b74494872555d1f7888dfd9225700a363f4a84fc) pktgen.c (dbc1625fc9deefb352f6ff26a575ae4b3ddef23a)
1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * Authors:
4 * Copyright 2001, 2002 by Robert Olsson <robert.olsson@its.uu.se>
5 * Uppsala University and
6 * Swedish University of Agricultural Sciences
7 *
8 * Alexey Kuznetsov <kuznet@ms2.inr.ac.ru>

--- 2142 unchanged lines hidden (view full) ---

2151
2152
2153static void spin(struct pktgen_dev *pkt_dev, ktime_t spin_until)
2154{
2155 ktime_t start_time, end_time;
2156 s64 remaining;
2157 struct hrtimer_sleeper t;
2158
1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * Authors:
4 * Copyright 2001, 2002 by Robert Olsson <robert.olsson@its.uu.se>
5 * Uppsala University and
6 * Swedish University of Agricultural Sciences
7 *
8 * Alexey Kuznetsov <kuznet@ms2.inr.ac.ru>

--- 2142 unchanged lines hidden (view full) ---

2151
2152
2153static void spin(struct pktgen_dev *pkt_dev, ktime_t spin_until)
2154{
2155 ktime_t start_time, end_time;
2156 s64 remaining;
2157 struct hrtimer_sleeper t;
2158
2159 hrtimer_init_on_stack(&t.timer, CLOCK_MONOTONIC, HRTIMER_MODE_ABS);
2159 hrtimer_init_sleeper_on_stack(&t, CLOCK_MONOTONIC, HRTIMER_MODE_ABS);
2160 hrtimer_set_expires(&t.timer, spin_until);
2161
2162 remaining = ktime_to_ns(hrtimer_expires_remaining(&t.timer));
2163 if (remaining <= 0)
2164 goto out;
2165
2166 start_time = ktime_get();
2167 if (remaining < 100000) {
2168 /* for small delays (<100us), just loop until limit is reached */
2169 do {
2170 end_time = ktime_get();
2171 } while (ktime_compare(end_time, spin_until) < 0);
2172 } else {
2160 hrtimer_set_expires(&t.timer, spin_until);
2161
2162 remaining = ktime_to_ns(hrtimer_expires_remaining(&t.timer));
2163 if (remaining <= 0)
2164 goto out;
2165
2166 start_time = ktime_get();
2167 if (remaining < 100000) {
2168 /* for small delays (<100us), just loop until limit is reached */
2169 do {
2170 end_time = ktime_get();
2171 } while (ktime_compare(end_time, spin_until) < 0);
2172 } else {
2173 /* see do_nanosleep */
2174 hrtimer_init_sleeper(&t);
2175 do {
2176 set_current_state(TASK_INTERRUPTIBLE);
2177 hrtimer_start_expires(&t.timer, HRTIMER_MODE_ABS);
2178
2179 if (likely(t.task))
2180 schedule();
2181
2182 hrtimer_cancel(&t.timer);

--- 1717 unchanged lines hidden --- 		2173 do {
2174 set_current_state(TASK_INTERRUPTIBLE);
2175 hrtimer_start_expires(&t.timer, HRTIMER_MODE_ABS);
2176
2177 if (likely(t.task))
2178 schedule();
2179
2180 hrtimer_cancel(&t.timer);

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