-/*-
- * BSD LICENSE
- *
- * Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
- * Copyright(c) 2012-2013 6WIND S.A.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * * Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * * Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- * * Neither the name of Intel Corporation nor the names of its
- * contributors may be used to endorse or promote products derived
- * from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2010-2014 Intel Corporation.
+ * Copyright(c) 2012-2013 6WIND S.A.
*/
#include <string.h>
#include <rte_common.h>
#include <rte_log.h>
#include <rte_cycles.h>
-#include <rte_tailq.h>
+#include <rte_lcore.h>
#include <rte_memory.h>
-#include <rte_memzone.h>
#include <rte_eal.h>
#include <rte_debug.h>
enum timer_source eal_timer_source = EAL_TIMER_HPET;
-/* The frequency of the RDTSC timer resolution */
-static uint64_t eal_tsc_resolution_hz = 0;
-
#ifdef RTE_LIBEAL_USE_HPET
#define DEV_HPET "/dev/hpet"
/*
* This function runs on a specific thread to update a global variable
- * containing used to process MSB of the HPET (unfortunatelly, we need
+ * containing used to process MSB of the HPET (unfortunately, we need
* this because hpet is 32 bits by default under linux).
*/
static void
#endif
-
-void
-rte_delay_us(unsigned us)
-{
- const uint64_t start = rte_get_timer_cycles();
- const uint64_t ticks = (uint64_t)us * rte_get_timer_hz() / 1E6;
- while ((rte_get_timer_cycles() - start) < ticks)
- rte_pause();
-}
-
-uint64_t
-rte_get_tsc_hz(void)
-{
- return eal_tsc_resolution_hz;
-}
-
-
#ifdef RTE_LIBEAL_USE_HPET
/*
* Open and mmap /dev/hpet (high precision event timer) that will
rte_eal_hpet_init(int make_default)
{
int fd, ret;
+ char thread_name[RTE_MAX_THREAD_NAME_LEN];
if (internal_config.no_hpet) {
- RTE_LOG(INFO, EAL, "HPET is disabled\n");
+ RTE_LOG(NOTICE, EAL, "HPET is disabled\n");
return -1;
}
/* create a thread that will increment a global variable for
* msb (hpet is 32 bits by default under linux) */
- ret = pthread_create(&msb_inc_thread_id, NULL,
+ ret = rte_ctrl_thread_create(&msb_inc_thread_id, NULL,
(void *(*)(void *))hpet_msb_inc, NULL);
- if (ret < 0) {
+ if (ret != 0) {
RTE_LOG(ERR, EAL, "ERROR: Cannot create HPET timer thread!\n");
internal_config.no_hpet = 1;
return -1;
}
+ /*
+ * Set thread_name for aid in debugging.
+ */
+ snprintf(thread_name, sizeof(thread_name), "hpet-msb-inc");
+ ret = rte_thread_setname(msb_inc_thread_id, thread_name);
+ if (ret != 0)
+ RTE_LOG(DEBUG, EAL,
+ "Cannot set HPET timer thread name!\n");
+
if (make_default)
eal_timer_source = EAL_TIMER_HPET;
return 0;
fclose(stream);
}
-static int
-set_tsc_freq_from_clock(void)
+uint64_t
+get_tsc_freq(void)
{
#ifdef CLOCK_MONOTONIC_RAW
#define NS_PER_SEC 1E9
- struct timespec sleeptime = {.tv_nsec = 5E8 }; /* 1/2 second */
+ struct timespec sleeptime = {.tv_nsec = NS_PER_SEC / 10 }; /* 1/10 second */
struct timespec t_start, t_end;
+ uint64_t tsc_hz;
if (clock_gettime(CLOCK_MONOTONIC_RAW, &t_start) == 0) {
uint64_t ns, end, start = rte_rdtsc();
ns += (t_end.tv_nsec - t_start.tv_nsec);
double secs = (double)ns/NS_PER_SEC;
- eal_tsc_resolution_hz = (uint64_t)((end - start)/secs);
- return 0;
+ tsc_hz = (uint64_t)((end - start)/secs);
+ return tsc_hz;
}
#endif
- return -1;
-}
-
-static void
-set_tsc_freq_fallback(void)
-{
- RTE_LOG(WARNING, EAL, "WARNING: clock_gettime cannot use "
- "CLOCK_MONOTONIC_RAW and HPET is not available"
- " - clock timings may be less accurate.\n");
- /* assume that the sleep(1) will sleep for 1 second */
- uint64_t start = rte_rdtsc();
- sleep(1);
- eal_tsc_resolution_hz = rte_rdtsc() - start;
-}
-/*
- * This function measures the TSC frequency. It uses a variety of approaches.
- *
- * 1. If kernel provides CLOCK_MONOTONIC_RAW we use that to tune the TSC value
- * 2. If kernel does not provide that, and we have HPET support, tune using HPET
- * 3. Lastly, if neither of the above can be used, just sleep for 1 second and
- * tune off that, printing a warning about inaccuracy of timing
- */
-static void
-set_tsc_freq(void)
-{
- if (set_tsc_freq_from_clock() < 0)
- set_tsc_freq_fallback();
-
- RTE_LOG(INFO, EAL, "TSC frequency is ~%"PRIu64" KHz\n",
- eal_tsc_resolution_hz/1000);
+ return 0;
}
int
git.droids-corp.org / dpdk.git / blobdiff