From: Dmitry Kozlyuk <dmitry.kozliuk@gmail.com>
To: Stephen Hemminger <stephen@networkplumber.org>
Cc: "Ananyev, Konstantin" <konstantin.ananyev@intel.com>,
Narcisa Ana Maria Vasile <navasile@linux.microsoft.com>,
"Richardson, Bruce" <bruce.richardson@intel.com>,
"david.marchand@redhat.com" <david.marchand@redhat.com>,
"dev@dpdk.org" <dev@dpdk.org>,
"dmitrym@microsoft.com" <dmitrym@microsoft.com>,
"khot@microsoft.com" <khot@microsoft.com>,
"navasile@microsoft.com" <navasile@microsoft.com>,
"ocardona@microsoft.com" <ocardona@microsoft.com>,
"Kadam, Pallavi" <pallavi.kadam@intel.com>,
"roretzla@microsoft.com" <roretzla@microsoft.com>,
"talshn@nvidia.com" <talshn@nvidia.com>,
"thomas@monjalon.net" <thomas@monjalon.net>
Subject: Re: [PATCH v18 8/8] eal: implement functions for mutex management
Date: Wed, 9 Mar 2022 00:36:06 +0300 [thread overview]
Message-ID: <20220309003606.001bbacc@sovereign> (raw)
In-Reply-To: <20220224094457.1e6721d8@hermes.local>
Hi Stephen,
2022-02-24 09:44 (UTC-0800), Stephen Hemminger:
> There seems to be some confusion here:
> pthread_mutex put thread to sleep if contended and on linux are built on the futex system call.
> pthread_rwlock are the reader/writer versions of these.
>
> The DPDK has primitives for multiple types of locks: spinlock, rwlock, ticketlock, pflock, etc
> these are build using atomic primitives (no syscall).
> these are platform independent
> these spin if contended
>
> Not sure about Windows, but it looks like slim rwlocks came from Windows NT and are an implementation
> of the same kind of spinning lock DPDK already has.
Both CRITICAL_SECTION and SRW lock spin shortly before going into kernel,
but both do this eventually---SRW lock is not a purely user space primitive.
next prev parent reply other threads:[~2022-03-08 21:36 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-02-07 16:02 [PATCH v18 8/8] eal: implement functions for mutex management Ananyev, Konstantin
2022-02-08 2:21 ` Ananyev, Konstantin
2022-02-09 2:47 ` Narcisa Ana Maria Vasile
2022-02-09 13:57 ` Ananyev, Konstantin
2022-02-20 21:56 ` Dmitry Kozlyuk
2022-02-23 17:08 ` Dmitry Kozlyuk
2022-02-24 17:29 ` Ananyev, Konstantin
2022-02-24 17:44 ` Stephen Hemminger
2022-03-08 21:36 ` Dmitry Kozlyuk [this message]
2022-03-08 21:33 ` Dmitry Kozlyuk
2022-02-09 3:08 ` Narcisa Ana Maria Vasile
2022-02-09 12:12 ` Ananyev, Konstantin
-- strict thread matches above, loose matches on Subject: below --
2021-11-10 3:01 [dpdk-dev] [PATCH v17 00/13] eal: Add EAL API for threading Narcisa Ana Maria Vasile
2021-11-11 1:33 ` [PATCH v18 0/8] " Narcisa Ana Maria Vasile
2021-11-11 1:33 ` [PATCH v18 8/8] eal: implement functions for mutex management Narcisa Ana Maria Vasile
2021-12-13 20:27 ` Narcisa Ana Maria Vasile
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