From: Nikhil Agarwal <nikhil.agarwal@linaro.org>
To: <dev@dpdk.org>
Cc: <david.hunt@intel.com>, <nikhil.agarwal@nxp.com>,
<hemant.agrawal@nxp.com>, <stable@dpdk.org>
Subject: [dpdk-dev] [PATCH 2/4] examples/l3fwd-power: fix the timer for any platform freq
Date: Tue, 12 Dec 2017 15:38:24 +0530 [thread overview]
Message-ID: <20171212100826.20550-2-nikhil.agarwal@linaro.org> (raw)
In-Reply-To: <20171212100826.20550-1-nikhil.agarwal@linaro.org>
The code assumes that the platform frequency is 2GHz.
This patch add support for dynamically detecting platform frequence.
Fixes: d7937e2e3d12 ("power: initial import")
Cc: stable@dpdk.org
Signed-off-by: Nikhil Agarwal <nikhil.agarwal@linaro.org>
---
examples/l3fwd-power/main.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/examples/l3fwd-power/main.c b/examples/l3fwd-power/main.c
index d335b0d..50c3702 100644
--- a/examples/l3fwd-power/main.c
+++ b/examples/l3fwd-power/main.c
@@ -79,8 +79,6 @@
#define MIN_ZERO_POLL_COUNT 10
-/* around 100ms at 2 Ghz */
-#define TIMER_RESOLUTION_CYCLES 200000000ULL
/* 100 ms interval */
#define TIMER_NUMBER_PER_SECOND 10
/* 100000 us */
@@ -875,7 +873,7 @@ main_loop(__attribute__((unused)) void *dummy)
{
struct rte_mbuf *pkts_burst[MAX_PKT_BURST];
unsigned lcore_id;
- uint64_t prev_tsc, diff_tsc, cur_tsc;
+ uint64_t prev_tsc, diff_tsc, cur_tsc, tim_res_tsc, hz;
uint64_t prev_tsc_power = 0, cur_tsc_power, diff_tsc_power;
int i, j, nb_rx;
uint8_t queueid;
@@ -890,6 +888,8 @@ main_loop(__attribute__((unused)) void *dummy)
const uint64_t drain_tsc = (rte_get_tsc_hz() + US_PER_S - 1) / US_PER_S * BURST_TX_DRAIN_US;
prev_tsc = 0;
+ hz = rte_get_timer_hz();
+ tim_res_tsc = hz/TIMER_NUMBER_PER_SECOND;
lcore_id = rte_lcore_id();
qconf = &lcore_conf[lcore_id];
@@ -935,7 +935,7 @@ main_loop(__attribute__((unused)) void *dummy)
}
diff_tsc_power = cur_tsc_power - prev_tsc_power;
- if (diff_tsc_power > TIMER_RESOLUTION_CYCLES) {
+ if (diff_tsc_power > tim_res_tsc) {
rte_timer_manage();
prev_tsc_power = cur_tsc_power;
}
--
2.7.4
next prev parent reply other threads:[~2017-12-12 10:12 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-12-12 10:08 [dpdk-dev] [PATCH 1/4] examples/l3fwd-power: fix non Rx intr supported platform Nikhil Agarwal
2017-12-12 10:08 ` Nikhil Agarwal [this message]
2017-12-13 14:22 ` [dpdk-dev] [PATCH 2/4] examples/l3fwd-power: fix the timer for any platform freq Hunt, David
2017-12-12 10:08 ` [dpdk-dev] [PATCH 3/4] examples/l3fwd-power: replace desc done with Rx queue count Nikhil Agarwal
2017-12-13 14:22 ` Hunt, David
2017-12-12 10:08 ` [dpdk-dev] [PATCH 4/4] examples/l3fwd-power: disable Lsc interrupts Nikhil Agarwal
2017-12-13 14:23 ` Hunt, David
2017-12-13 14:21 ` [dpdk-dev] [PATCH 1/4] examples/l3fwd-power: fix non Rx intr supported platform Hunt, David
2018-01-15 17:43 ` [dpdk-dev] [dpdk-stable] " Thomas Monjalon
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