On Tue, Mar 10, 2020 at 8:09 AM Linhaifeng wrote:
>
>
>
> -邮件原件-
> 发件人: Jerin Jacob [mailto:jerinjac...@gmail.com]
> 发送时间: 2020年3月9日 23:43
> 收件人: Linhaifeng
> 抄送: dev@dpdk.org; tho...@monjalon.net; Lilijun (Jerry)
> ; chenchanghu ; xudingke
>
> 主题: R
Linhaifeng
> > > Sent: Monday, March 9, 2020 5:23 PM
> > > To: dev@dpdk.org; tho...@monjalon.net
> > > Cc: chenchanghu ; xudingke
> > > ; Lilijun (Jerry)
> > > Subject: [dpdk-dev] [PATCH] cycles: add isb before read cntvct_el0
> > >
> > >
t; Subject: RE: [PATCH] cycles: add isb before read cntvct_el0
>
> Hi Haifeng,
>
> > -Original Message-
> > From: dev On Behalf Of Linhaifeng
> > Sent: Monday, March 9, 2020 5:23 PM
> > To: dev@dpdk.org; tho...@monjalon.net
> > Cc: chenchanghu ; xuding
Hi Haifeng,
> -Original Message-
> From: dev On Behalf Of Linhaifeng
> Sent: Monday, March 9, 2020 5:23 PM
> To: dev@dpdk.org; tho...@monjalon.net
> Cc: chenchanghu ; xudingke
> ; Lilijun (Jerry)
> Subject: [dpdk-dev] [PATCH] cycles: add isb before read cntvct_el0
&
On Mon, Mar 9, 2020 at 2:43 PM Linhaifeng wrote:
>
> We nead isb rather than dsb to sync system counter to cntvct_el0.
# Currently rte_rdtsc() does not have dsb. Right? or any barriers.
# Why do you need it? If it regarding, getting accurate value then use
rte_rdtsc_precise().
>
> Signed-off-by:
We should use isb rather than dsb to sync system counter to cntvct_el0.
Signed-off-by: Linhaifeng
---
lib/librte_eal/common/include/arch/arm/rte_atomic_64.h | 3 +++
lib/librte_eal/common/include/arch/arm/rte_cycles_64.h | 2 ++
2 files changed, 5 insertions(+)
diff --git a/lib/librte_eal/commo
We should use isb rather than dsb to sync system counter to cntvct_el0.
Signed-off-by: Haifeng Lin
---
lib/librte_eal/common/include/arch/arm/rte_atomic_64.h | 3 +++
lib/librte_eal/common/include/arch/arm/rte_cycles_64.h | 2 ++
2 files changed, 5 insertions(+)
diff --git a/lib/librte_eal/comm
We should use isb rather than dsb to sync system counter to cntvct_el0.
Signed-off-by: Haifeng Lin
---
lib/librte_eal/common/include/arch/arm/rte_atomic_64.h | 3 +++
lib/librte_eal/common/include/arch/arm/rte_cycles_64.h | 2 ++
2 files changed, 5 insertions(+)
diff --git a/lib/librte_eal/common/
On Mon, Mar 9, 2020 at 10:14 AM Linhaifeng wrote:
>
> We nead isb rather than dsb to sync system counter to cntvct_el0.
I'll leave the arm maintainers look at this, but I have a comment on the form.
>
> Signed-off-by: Haifeng Lin
> ---
> lib/librte_eal/common/include/arch/arm/rte_atomic_64.h
We nead isb rather than dsb to sync system counter to cntvct_el0.
Signed-off-by: Haifeng Lin
---
lib/librte_eal/common/include/arch/arm/rte_atomic_64.h | 3 +++
lib/librte_eal/common/include/arch/arm/rte_cycles_64.h | 2 ++
2 files changed, 5 insertions(+)
diff --git a/lib/librte_eal/common/inc
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