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From: Ferruh Yigit <ferruh.yigit@intel.com>
To: Gaetan Rivet <grive@u256.net>, matan@mellanox.com
Cc: dev@dpdk.org, Stephen Hemminger <stephen@networkplumber.org>
Subject: Re: [dpdk-dev] [PATCH 2/2] net/failsafe: fix primary/secondary mutex
Date: Wed, 14 Apr 2021 14:10:06 +0100
Message-ID: <0def4a36-e5e2-1a41-df84-2b237efc7758@intel.com> (raw)
In-Reply-To: <20210315192722.35490-3-stephen@networkplumber.org>

On 3/15/2021 7:27 PM, Stephen Hemminger wrote:
> Set mutex used in failsafe driver to protect when used by
> both primary and secondary process. Without this fix, the failsafe
> lock is not really locking when there are multiple secondary processes.
> 
> Bugzilla ID: 662
> Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
> Fixes: 655fcd68c7d2 ("net/failsafe: fix hotplug races")
> Cc: matan@mellanox.com
> ---
>   drivers/net/failsafe/failsafe.c | 5 +++++
>   1 file changed, 5 insertions(+)
> 
> diff --git a/drivers/net/failsafe/failsafe.c b/drivers/net/failsafe/failsafe.c
> index e3bda0df2bf9..5b7e560dbc08 100644
> --- a/drivers/net/failsafe/failsafe.c
> +++ b/drivers/net/failsafe/failsafe.c
> @@ -140,6 +140,11 @@ fs_mutex_init(struct fs_priv *priv)
>   		ERROR("Cannot initiate mutex attributes - %s", strerror(ret));
>   		return ret;
>   	}
> +	/* Allow mutex to protect primary/secondary */
> +	ret = pthread_mutexattr_setpshared(&attr, PTHREAD_PROCESS_SHARED);
> +	if (ret)
> +		ERROR("Cannot set mutex shared - %s", strerror(ret));
> +
>   	/* Allow mutex relocks for the thread holding the mutex. */
>   	ret = pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_RECURSIVE);
>   	if (ret) {
> 

Overall looks good to me.

Gaetan, Matan,

Can you please test the patch? To be sure it is not causing any unexpected 
functional/performance issues.

Thanks,
ferruh

  reply	other threads:[~2021-04-14 13:10 UTC|newest]

Thread overview: 32+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-03-15 19:27 [dpdk-dev] [PATCH 0/2] Mark shared pthread mutex Stephen Hemminger
2021-03-15 19:27 ` [dpdk-dev] [PATCH 1/2] ethdev: make flow API primary/secondary process safe Stephen Hemminger
2021-03-16 23:48   ` Suanming Mou
2021-03-17  0:13     ` Stephen Hemminger
2021-03-17  0:32       ` Suanming Mou
2021-04-14 13:06     ` Ferruh Yigit
2021-04-15  2:55       ` Suanming Mou
2021-04-15  3:17         ` Stephen Hemminger
2021-04-15  7:42         ` Ferruh Yigit
2021-04-15 20:04           ` Stephen Hemminger
2021-04-16  0:57           ` Suanming Mou
2021-04-16  3:19           ` Ajit Khaparde
2021-04-16  1:41       ` fengchengwen
2021-04-16  8:12         ` Ferruh Yigit
2021-04-16  8:18   ` Ferruh Yigit
2021-04-19 17:14   ` Thomas Monjalon
2021-04-19 17:45     ` Stephen Hemminger
2021-04-19 18:09       ` Thomas Monjalon
2021-06-08  8:07   ` Andrew Rybchenko
2021-03-15 19:27 ` [dpdk-dev] [PATCH 2/2] net/failsafe: fix primary/secondary mutex Stephen Hemminger
2021-04-14 13:10   ` Ferruh Yigit [this message]
2021-04-16  8:19     ` Ferruh Yigit
2021-04-19 17:08   ` Thomas Monjalon
2021-06-08  8:00     ` Andrew Rybchenko
2021-06-08 15:42       ` Stephen Hemminger
2021-06-08 15:55         ` Andrew Rybchenko
2021-06-08 20:48           ` Stephen Hemminger
2021-06-09 10:04             ` Andrew Rybchenko
2021-06-14 14:43               ` Gaëtan Rivet
2021-03-15 19:45 ` [dpdk-dev] [PATCH 0/2] Mark shared pthread mutex Stephen Hemminger
2021-03-16 16:28 ` Stephen Hemminger
2021-04-16  8:25   ` Ferruh Yigit

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