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From: Stephen Hemminger <stephen@networkplumber.org>
To: Honnappa Nagarahalli <Honnappa.Nagarahalli@arm.com>
Cc: Mattias Rönnblom <hofors@lysator.liu.se>,
	"dev@dpdk.org" <dev@dpdk.org>,
	"olivier.matz@6wind.com" <olivier.matz@6wind.com>,
	"lucp.at.work@gmail.com" <lucp.at.work@gmail.com>,
	"david.marchand@redhat.com" <david.marchand@redhat.com>,
	"thomas@monjalon.net" <thomas@monjalon.net>,
	Ruifeng Wang <Ruifeng.Wang@arm.com>, nd <nd@arm.com>
Subject: Re: [dpdk-dev] [RFC v2] eal: simplify the implementation of rte_ctrl_thread_create
Date: Wed, 25 Aug 2021 14:57:53 -0700
Message-ID: <20210825145753.57ea4d1d@hermes.local> (raw)
In-Reply-To: <AM8PR08MB5810ECA5F477F0BF930A15FC98C69@AM8PR08MB5810.eurprd08.prod.outlook.com>

On Wed, 25 Aug 2021 15:23:08 +0000
Honnappa Nagarahalli <Honnappa.Nagarahalli@arm.com> wrote:

> <snip>
> 
> > 
> > On 2021-08-02 07:16, Honnappa Nagarahalli wrote:  
> > > The current described behaviour of rte_ctrl_thread_create is rigid
> > > which makes the implementation of the function complex.
> > > The behavior is abstracted to allow for simplified implementation.
> > >  
> > 
> > Have you considered using a POSIX condition variable instead of atomics for
> > synchronization?  
> No, I have not considered. The current implementation is complex because of the error handling of pthread_barrier_xxx APIs. I am thinking similar complexity will come in with the condition variable functions.
> 
> I am using atomic variable in this patch to synchronize which does not need much error handling which simplifies the implementation.
> 
> <snip>

The problem with condition variables is that it then adds a mutex
as well.

  reply	other threads:[~2021-08-25 21:57 UTC|newest]

Thread overview: 30+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-07-30 21:37 [dpdk-dev] [RFC] " Honnappa Nagarahalli
2021-08-02  5:16 ` [dpdk-dev] [RFC v2] " Honnappa Nagarahalli
2021-08-23 10:16   ` Olivier Matz
2021-08-24 20:03     ` Honnappa Nagarahalli
2021-08-24 21:30       ` Stephen Hemminger
2021-08-25  1:26         ` Honnappa Nagarahalli
2021-08-25 15:19         ` Mattias Rönnblom
2021-08-25 15:31           ` Honnappa Nagarahalli
2021-09-01 20:04             ` Mattias Rönnblom
2021-09-01 22:21               ` Honnappa Nagarahalli
2021-08-30 22:30         ` Honnappa Nagarahalli
2021-08-25 15:12   ` Mattias Rönnblom
2021-08-25 15:23     ` Honnappa Nagarahalli
2021-08-25 21:57       ` Stephen Hemminger [this message]
2021-08-25 18:48 ` [dpdk-dev] [RFC] " Luc Pelletier
2021-08-25 19:26   ` Honnappa Nagarahalli
2021-08-30 16:34 ` [dpdk-dev] [PATCH v3 1/2] " Honnappa Nagarahalli
2021-08-30 16:34   ` [dpdk-dev] [PATCH v3 2/2] test/eal: add a test for rte_ctrl_thread_create Honnappa Nagarahalli
2021-08-30 16:41     ` Stephen Hemminger
2021-08-30 16:42       ` Honnappa Nagarahalli
2021-08-30 16:44   ` [dpdk-dev] [PATCH v3 1/2] eal: simplify the implementation of rte_ctrl_thread_create Stephen Hemminger
2021-08-30 22:12     ` Honnappa Nagarahalli
2021-10-13 20:18 ` [dpdk-dev] [PATCH v4 " Honnappa Nagarahalli
2021-10-13 20:18   ` [dpdk-dev] [PATCH v4 2/2] test/eal: add a test for rte_ctrl_thread_create Honnappa Nagarahalli
2021-10-21 15:46   ` [dpdk-dev] [PATCH v4 1/2] eal: simplify the implementation of rte_ctrl_thread_create Olivier Matz
2021-10-21 20:49     ` Honnappa Nagarahalli
2021-10-21 21:32 ` [dpdk-dev] [PATCH v5 " Honnappa Nagarahalli
2021-10-21 21:32   ` [dpdk-dev] [PATCH v5 2/2] test/eal: add a test for rte_ctrl_thread_create Honnappa Nagarahalli
2021-10-22  8:35     ` Olivier Matz
2021-10-25 19:46       ` David Marchand

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