From: Alexey.Brodkin@synopsys.com (Alexey Brodkin)
To: linux-snps-arc@lists.infradead.org
Subject: [PATCH 02/10] ARC: send ipi to all cpus sharing task mm in case of page fault
Date: Thu, 25 May 2017 11:36:06 +0000 [thread overview]
Message-ID: <1495712165.5393.38.camel@synopsys.com> (raw)
In-Reply-To: <1495679660-9598-3-git-send-email-noamca@mellanox.com>
Hi Noam,
On Thu, 2017-05-25@05:34 +0300, Noam Camus wrote:
> From: Noam Camus <noamca at mellanox.com>
>
> This patch is derived due to performance issue.
> The use case is a page fault that resides on more than the local cpu.
> Trying to broadcast all CPUs results on performance degradation.
> So we try to avoid this by sending only to the relevant CPUs.
>
> Signed-off-by: Noam Camus <noamca at mellanox.com>
Really nice catch!
Reviewed-by: Alexey Brodkin <abrodkin at synopsys.com>
WARNING: multiple messages have this Message-ID (diff)
From: Alexey Brodkin <Alexey.Brodkin@synopsys.com>
To: "noamca@mellanox.com" <noamca@mellanox.com>
Cc: "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"linux-snps-arc@lists.infradead.org"
<linux-snps-arc@lists.infradead.org>
Subject: Re: [PATCH 02/10] ARC: send ipi to all cpus sharing task mm in case of page fault
Date: Thu, 25 May 2017 11:36:06 +0000 [thread overview]
Message-ID: <1495712165.5393.38.camel@synopsys.com> (raw)
In-Reply-To: <1495679660-9598-3-git-send-email-noamca@mellanox.com>
Hi Noam,
On Thu, 2017-05-25 at 05:34 +0300, Noam Camus wrote:
> From: Noam Camus <noamca@mellanox.com>
>
> This patch is derived due to performance issue.
> The use case is a page fault that resides on more than the local cpu.
> Trying to broadcast all CPUs results on performance degradation.
> So we try to avoid this by sending only to the relevant CPUs.
>
> Signed-off-by: Noam Camus <noamca@mellanox.com>
Really nice catch!
Reviewed-by: Alexey Brodkin <abrodkin@synopsys.com>
next prev parent reply other threads:[~2017-05-25 11:36 UTC|newest]
Thread overview: 54+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-05-25 2:34 [PATCH 00/10] ARC plat-eznps upstream cont Noam Camus
2017-05-25 2:34 ` Noam Camus
2017-05-25 2:34 ` [PATCH 01/10] ARC: set level of log per CPU during boot to be debug level Noam Camus
2017-05-25 2:34 ` Noam Camus
2017-05-25 10:55 ` Alexey Brodkin
2017-05-25 10:55 ` Alexey Brodkin
2017-05-25 2:34 ` [PATCH 02/10] ARC: send ipi to all cpus sharing task mm in case of page fault Noam Camus
2017-05-25 2:34 ` Noam Camus
2017-05-25 11:36 ` Alexey Brodkin [this message]
2017-05-25 11:36 ` Alexey Brodkin
2017-05-25 2:34 ` [PATCH 03/10] ARC: typo fix in mm/fault.c Noam Camus
2017-05-25 2:34 ` Noam Camus
2017-05-25 11:04 ` Alexey Brodkin
2017-05-25 11:04 ` Alexey Brodkin
2017-05-25 2:34 ` [PATCH 04/10] ARC: typos fix in kernel/entry-compact.S Noam Camus
2017-05-25 2:34 ` Noam Camus
2017-05-25 11:05 ` Alexey Brodkin
2017-05-25 11:05 ` Alexey Brodkin
2017-05-25 2:34 ` [PATCH 05/10] ARC: [plat-eznps] typo fix at Kconfig Noam Camus
2017-05-25 2:34 ` Noam Camus
2017-05-25 11:07 ` Alexey Brodkin
2017-05-25 11:07 ` Alexey Brodkin
2017-05-25 2:34 ` [PATCH 06/10] ARC: [plat-eznps] Fix TLB Errata Noam Camus
2017-05-25 2:34 ` Noam Camus
2017-05-25 11:00 ` Alexey Brodkin
2017-05-25 11:00 ` Alexey Brodkin
2017-05-25 11:12 ` Noam Camus
2017-05-25 11:12 ` Noam Camus
2017-06-01 21:16 ` Vineet Gupta
2017-06-01 21:16 ` Vineet Gupta
2017-05-25 2:34 ` [PATCH 07/10] ARC: [plat-eznps] disabled stall counter due to a HW bug Noam Camus
2017-05-25 2:34 ` Noam Camus
2017-05-25 11:10 ` Alexey Brodkin
2017-05-25 11:10 ` Alexey Brodkin
2017-05-25 11:16 ` Noam Camus
2017-05-25 11:16 ` Noam Camus
2017-05-25 2:34 ` [PATCH 08/10] ARC: [plat-eznps] spinlock aware for MTM Noam Camus
2017-05-25 2:34 ` Noam Camus
2017-05-25 2:34 ` [PATCH 09/10] ARC: [plat-eznps] use schd.wft instruction instead of sleep at idle task Noam Camus
2017-05-25 2:34 ` Noam Camus
2017-05-25 2:34 ` [PATCH 10/10] ARC: [plat-eznps] Handle memory error as an exception Noam Camus
2017-05-25 2:34 ` Noam Camus
2017-05-25 11:14 ` Alexey Brodkin
2017-05-25 11:14 ` Alexey Brodkin
2017-05-25 11:26 ` Noam Camus
2017-05-25 11:26 ` Noam Camus
2017-05-25 11:30 ` Alexey Brodkin
2017-05-25 11:30 ` Alexey Brodkin
2017-05-25 12:03 ` Noam Camus
2017-05-25 12:03 ` Noam Camus
2017-05-25 12:05 ` Alexey Brodkin
2017-05-25 12:05 ` Alexey Brodkin
2017-06-06 21:57 ` Vineet Gupta
2017-06-06 21:57 ` Vineet Gupta
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