From: Jerin Jacob <jerin.jacob@caviumnetworks.com>
To: dev@dpdk.org
Cc: thomas@monjalon.net, bruce.richardson@intel.com,
konstantin.ananyev@intel.com, viktorin@rehivetech.com,
jianbo.liu@linaro.org, chaozhu@linux.vnet.ibm.com,
Jerin Jacob <jerin.jacob@caviumnetworks.com>
Subject: [dpdk-dev] [PATCH 5/5] eal/timer: honor architecture specific rdtsc hz function
Date: Sun, 13 Aug 2017 12:33:50 +0530 [thread overview]
Message-ID: <20170813070350.13700-6-jerin.jacob@caviumnetworks.com> (raw)
In-Reply-To: <20170813070350.13700-1-jerin.jacob@caviumnetworks.com>
When calibrating the tsc frequency, first, probe the architecture specific
rdtsc hz function. if not available, use the existing calibrate scheme
to calibrate the tsc frequency.
Signed-off-by: Jerin Jacob <jerin.jacob@caviumnetworks.com>
---
lib/librte_eal/common/eal_common_timer.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/lib/librte_eal/common/eal_common_timer.c b/lib/librte_eal/common/eal_common_timer.c
index ed0b16d05..978edaed7 100644
--- a/lib/librte_eal/common/eal_common_timer.c
+++ b/lib/librte_eal/common/eal_common_timer.c
@@ -80,8 +80,11 @@ estimate_tsc_freq(void)
void
set_tsc_freq(void)
{
- uint64_t freq = get_tsc_freq();
+ uint64_t freq;
+ freq = rte_rdtsc_arch_hz();
+ if (!freq)
+ freq = get_tsc_freq();
if (!freq)
freq = estimate_tsc_freq();
--
2.14.0
prev parent reply other threads:[~2017-08-13 7:04 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-08-13 7:03 [dpdk-dev] [PATCH 0/5] improve tsc frequency calibration Jerin Jacob
2017-08-13 7:03 ` [dpdk-dev] [PATCH 1/5] eal/x86: define architecture specific rdtsc hz Jerin Jacob
2017-09-18 12:54 ` Burakov, Anatoly
2017-08-13 7:03 ` [dpdk-dev] [PATCH 2/5] eal/ppc64: " Jerin Jacob
2017-09-28 1:53 ` Chao Zhu
2017-08-13 7:03 ` [dpdk-dev] [PATCH 3/5] eal/armv7: " Jerin Jacob
2017-08-13 7:03 ` [dpdk-dev] [PATCH 4/5] eal/armv8: " Jerin Jacob
2017-08-15 3:35 ` Jianbo Liu
2017-08-13 7:03 ` Jerin Jacob [this message]
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