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Tue, 12 Dec 2017 03:11:59 -0700 From: Nikhil Agarwal To: CC: , , , Date: Tue, 12 Dec 2017 15:38:24 +0530 Message-ID: <20171212100826.20550-2-nikhil.agarwal@linaro.org> X-Mailer: git-send-email 2.9.3 In-Reply-To: <20171212100826.20550-1-nikhil.agarwal@linaro.org> References: <20171212100826.20550-1-nikhil.agarwal@linaro.org> X-EOPAttributedMessage: 0 X-Matching-Connectors: 131575471164063114; (91ab9b29-cfa4-454e-5278-08d120cd25b8); () X-Forefront-Antispam-Report: CIP:192.88.168.50; IPV:NLI; CTRY:US; EFV:NLI; SFV:NSPM; SFS:(10009020)(336005)(39860400002)(39380400002)(346002)(376002)(2980300002)(199004)(189003)(97736004)(50466002)(48376002)(498600001)(50226002)(8676002)(4326008)(5660300001)(47776003)(106466001)(36756003)(54906003)(105596002)(53936002)(2351001)(51416003)(77096006)(68736007)(76176011)(6666003)(81156014)(81166006)(104016004)(316002)(8656006)(575784001)(1076002)(86362001)(6916009)(2950100002)(8936002)(16586007)(305945005)(356003)(2906002); DIR:OUT; SFP:1101; SCL:1; SRVR:DM5PR03MB2699; 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Ip=[192.88.168.50]; Helo=[tx30smr01.am.freescale.net] X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM5PR03MB2699 Subject: [dpdk-dev] [PATCH 2/4] examples/l3fwd-power: fix the timer for any platform freq X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" 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 --- examples/l3fwd-power/main.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) -- 2.7.4 Acked-by: David Hunt 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; }