From: Jerin Jacob <jerin.jacob@caviumnetworks.com>
To: Thomas Monjalon <thomas@monjalon.net>
Cc: gowrishankar.m@linux.vnet.ibm.com, jianbo.liu@linaro.org,
sergio.gonzalez.monroy@intel.com, bruce.richardson@intel.com,
dev@dpdk.org
Subject: Re: [dpdk-dev] [PATCH 0/4] improve tsc frequency calibration
Date: Fri, 13 Oct 2017 08:51:07 +0530 [thread overview]
Message-ID: <20171013032106.GA7801@jerin> (raw)
In-Reply-To: <20171013000247.4158-1-thomas@monjalon.net>
-----Original Message-----
> Date: Fri, 13 Oct 2017 02:02:43 +0200
> From: Thomas Monjalon <thomas@monjalon.net>
> To: gowrishankar.m@linux.vnet.ibm.com, jerin.jacob@caviumnetworks.com,
> jianbo.liu@linaro.org, sergio.gonzalez.monroy@intel.com,
> bruce.richardson@intel.com
> Cc: dev@dpdk.org
> Subject: [PATCH 0/4] improve tsc frequency calibration
> X-Mailer: git-send-email 2.14.1
>
> v3 changes:
> - implement in .c files instead of exporting an inline arch function
> - rename arch function from rte_rdtsc_arch_hz to get_tsc_freq_arch
> - integrate x86 implementation in the series
> - fix private EAL include in PPC implementation (not tested)
Thanks Thomas.
Tested on a arm64 machine.
Tested-by: Jerin Jacob <jerin.jacob@caviumnetworks.com>
>
>
> From: Gowrishankar Muthukrishnan <gowrishankar.m@linux.vnet.ibm.com>
>
> Some architecture like armv8 provides an architecture specific function
> to get the rdtsc frequency. The existing rdtsc calibration scheme uses
> OS serivce like sleep(1) to calibrate the frequency which may not
> produce the accurate result. Introducing an architecture specific hook
> to get the rdtsc frequency if architecture provides it. If not, use the
> exiting the calibrate scheme to get the rdtsc frequency.
>
> Jerin Jacob (3):
> timer: honor arch-specific TSC frequency query
> eal/armv8: implement arch-specific TSC freq query
> eal/ppc64: implement arch-specific TSC freq query
>
> Sergio Gonzalez Monroy (1):
> eal/x86: implement arch-specific TSC freq query
>
> lib/librte_eal/bsdapp/eal/Makefile | 1 +
> lib/librte_eal/common/arch/arm/rte_cycles.c | 45 +++++++
> .../ppc_64/rte_cycles.c} | 78 ++---------
> .../{eal_common_timer.c => arch/x86/rte_cycles.c} | 143 ++++++++++++++-------
> lib/librte_eal/common/eal_common_timer.c | 5 +-
> lib/librte_eal/common/eal_private.h | 11 ++
> lib/librte_eal/linuxapp/eal/Makefile | 1 +
> 7 files changed, 170 insertions(+), 114 deletions(-)
> create mode 100644 lib/librte_eal/common/arch/arm/rte_cycles.c
> copy lib/librte_eal/common/{eal_common_timer.c => arch/ppc_64/rte_cycles.c} (50%)
> copy lib/librte_eal/common/{eal_common_timer.c => arch/x86/rte_cycles.c} (50%)
>
> --
> 2.14.1
>
next prev parent reply other threads:[~2017-10-13 3:21 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-09-22 8:25 [dpdk-dev] [PATCH v2 0/5] " Gowrishankar
2017-09-22 8:25 ` [dpdk-dev] [PATCH v2 1/5] eal/x86: define architecture specific rdtsc hz Gowrishankar
2017-09-22 8:25 ` [dpdk-dev] [PATCH v2 2/5] eal/ppc64: " Gowrishankar
2017-10-12 22:20 ` Thomas Monjalon
2017-09-22 8:25 ` [dpdk-dev] [PATCH v2 3/5] eal/armv7: " Gowrishankar
2017-09-22 8:25 ` [dpdk-dev] [PATCH v2 4/5] eal/armv8: " Gowrishankar
2017-09-22 8:25 ` [dpdk-dev] [PATCH v2 5/5] eal/timer: honor architecture specific rdtsc hz function Gowrishankar
2017-10-11 17:36 ` Thomas Monjalon
2017-10-11 18:57 ` Jerin Jacob
2017-10-11 19:25 ` Thomas Monjalon
2017-10-12 8:48 ` Bruce Richardson
2017-10-12 10:12 ` Thomas Monjalon
2017-10-12 10:25 ` Bruce Richardson
2017-10-12 10:16 ` Jerin Jacob
2017-10-13 0:02 ` [dpdk-dev] [PATCH 0/4] improve tsc frequency calibration Thomas Monjalon
2017-10-13 0:02 ` [dpdk-dev] [PATCH 1/4] timer: honor arch-specific TSC frequency query Thomas Monjalon
2017-10-13 0:02 ` [dpdk-dev] [PATCH 2/4] eal/armv8: implement arch-specific TSC freq query Thomas Monjalon
2017-10-13 0:02 ` [dpdk-dev] [PATCH 3/4] eal/ppc64: " Thomas Monjalon
2017-10-13 0:02 ` [dpdk-dev] [PATCH 4/4] eal/x86: " Thomas Monjalon
2017-10-13 3:47 ` Stephen Hemminger
2017-10-13 7:30 ` Thomas Monjalon
2017-10-13 15:13 ` Stephen Hemminger
2017-10-13 15:17 ` Bruce Richardson
2017-10-13 3:21 ` Jerin Jacob [this message]
2017-10-13 11:08 ` [dpdk-dev] [PATCH 0/4] improve tsc frequency calibration Thomas Monjalon
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