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From: Stefan Wahren <stefan.wahren@i2se.com>
To: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>,
	eric@anholt.net, dave.stevenson@raspberrypi.org
Cc: linux-rpi-kernel@lists.infradead.org, gregkh@linuxfoundation.org,
	linux-arm-kernel@lists.infradead.org, devel@driverdev.osuosl.org,
	linux-kernel@vger.kernel.org
Subject: Re: [PATCH RFC 11/18] staging: vchiq_arm: use completions instead of semaphores
Date: Sun, 28 Oct 2018 22:00:10 +0100 (CET)	[thread overview]
Message-ID: <646164838.4217.1540760410870@email.ionos.de> (raw)
In-Reply-To: <20181026134813.7775-12-nsaenzjulienne@suse.de>

> Nicolas Saenz Julienne <nsaenzjulienne@suse.de> hat am 26. Oktober 2018 um 15:48 geschrieben:
> 
> 
> It is preferred in the kernel to avoid using semaphores to wait for
> events, as they are optimised for the opposite situation; where the
> common case is that they are available and may block only occasionally.
> FYI see this thread: https://lkml.org/lkml/2008/4/11/323.
> 
> Also completions are semantically more explicit in this case.
> 

Since patch #11 #12 and #13 doing the same, they could be fold.

WARNING: multiple messages have this Message-ID
From: stefan.wahren@i2se.com (Stefan Wahren)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH RFC 11/18] staging: vchiq_arm: use completions instead of semaphores
Date: Sun, 28 Oct 2018 22:00:10 +0100 (CET)	[thread overview]
Message-ID: <646164838.4217.1540760410870@email.ionos.de> (raw)
In-Reply-To: <20181026134813.7775-12-nsaenzjulienne@suse.de>

> Nicolas Saenz Julienne <nsaenzjulienne@suse.de> hat am 26. Oktober 2018 um 15:48 geschrieben:
> 
> 
> It is preferred in the kernel to avoid using semaphores to wait for
> events, as they are optimised for the opposite situation; where the
> common case is that they are available and may block only occasionally.
> FYI see this thread: https://lkml.org/lkml/2008/4/11/323.
> 
> Also completions are semantically more explicit in this case.
> 

Since patch #11 #12 and #13 doing the same, they could be fold.

  reply	other threads:[~2018-10-28 21:00 UTC|newest]

Thread overview: 54+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-10-26 13:47 [PATCH RFC 00/18] staging: vchiq: remove dead code & misc fixes Nicolas Saenz Julienne
2018-10-26 13:47 ` Nicolas Saenz Julienne
2018-10-26 13:47 ` [PATCH RFC 01/18] staging: vchiq_core: rework vchiq_get_config Nicolas Saenz Julienne
2018-10-26 13:47   ` Nicolas Saenz Julienne
2018-10-26 13:47 ` [PATCH RFC 02/18] staging: vchiq_arm: rework close/remove_service IOCTLS Nicolas Saenz Julienne
2018-10-26 13:47   ` Nicolas Saenz Julienne
2018-10-26 13:47 ` [PATCH RFC 03/18] staging: vchiq_shim: delete vchi_service_create Nicolas Saenz Julienne
2018-10-26 13:47   ` Nicolas Saenz Julienne
2018-10-26 13:47 ` [PATCH RFC 04/18] stagning: vchiq_arm: use list_for_each_entry when accessing bulk_waiter_list Nicolas Saenz Julienne
2018-10-26 13:47   ` Nicolas Saenz Julienne
2018-10-26 13:48 ` [PATCH RFC 05/18] staging: vchiq_arm: get rid of vchi_mh.h Nicolas Saenz Julienne
2018-10-26 13:48   ` Nicolas Saenz Julienne
2018-10-26 13:48 ` [PATCH RFC 06/18] staging: vchiq_arm: rework vchiq_ioc_copy_element_data Nicolas Saenz Julienne
2018-10-26 13:48   ` Nicolas Saenz Julienne
2018-10-26 13:48 ` [PATCH RFC 07/18] staging: vchiq-core: get rid of is_master distinction Nicolas Saenz Julienne
2018-10-26 13:48   ` Nicolas Saenz Julienne
2018-10-26 13:48 ` [PATCH RFC 08/18] staging: vchiq_core: remove unnecessary safety checks in vchiq_init_state Nicolas Saenz Julienne
2018-10-26 13:48   ` Nicolas Saenz Julienne
2018-10-26 13:48 ` [PATCH RFC 09/18] staging: vchiq_core: do not initialize semaphores twice Nicolas Saenz Julienne
2018-10-26 13:48   ` Nicolas Saenz Julienne
2018-10-28 20:45   ` Stefan Wahren
2018-10-28 20:45     ` Stefan Wahren
2018-11-06 15:41     ` Nicolas Saenz Julienne
2018-11-06 15:41       ` Nicolas Saenz Julienne
2018-11-06 16:06       ` Stefan Wahren
2018-11-06 16:06         ` Stefan Wahren
2018-11-06 18:28         ` Nicolas Saenz Julienne
2018-11-06 18:28           ` Nicolas Saenz Julienne
2018-10-26 13:48 ` [PATCH RFC 10/18] staging: vchiq_core: don't add a wmb() before remote_event_signal() Nicolas Saenz Julienne
2018-10-26 13:48   ` Nicolas Saenz Julienne
2018-10-26 13:48 ` [PATCH RFC 11/18] staging: vchiq_arm: use completions instead of semaphores Nicolas Saenz Julienne
2018-10-26 13:48   ` Nicolas Saenz Julienne
2018-10-28 21:00   ` Stefan Wahren [this message]
2018-10-28 21:00     ` Stefan Wahren
2018-10-26 13:48 ` [PATCH RFC 12/18] staging: vchiq_util: " Nicolas Saenz Julienne
2018-10-26 13:48   ` Nicolas Saenz Julienne
2018-10-26 13:48 ` [PATCH RFC 13/18] staging: vchiq_core: " Nicolas Saenz Julienne
2018-10-26 13:48   ` Nicolas Saenz Julienne
2018-10-26 13:48 ` [PATCH RFC 14/18] staging: vchiq_util: get rid of unneeded memory barriers Nicolas Saenz Julienne
2018-10-26 13:48   ` Nicolas Saenz Julienne
2018-10-26 13:48 ` [PATCH RFC 15/18] stagning: vchiq_core: fix logic redundancy in parse_open Nicolas Saenz Julienne
2018-10-26 13:48   ` Nicolas Saenz Julienne
2018-10-28 20:58   ` Stefan Wahren
2018-10-28 20:58     ` Stefan Wahren
2018-10-26 13:48 ` [PATCH RFC 16/18] staging: vchiq_arm: rework probe and init functions Nicolas Saenz Julienne
2018-10-26 13:48   ` Nicolas Saenz Julienne
2018-10-28 21:02   ` Stefan Wahren
2018-10-28 21:02     ` Stefan Wahren
2018-10-26 13:48 ` [PATCH RFC 17/18] staging: vchiq_arm: fix open/release cdev functions Nicolas Saenz Julienne
2018-10-26 13:48   ` Nicolas Saenz Julienne
2018-10-26 13:48 ` [PATCH RFC 18/18] staging: vchiq: add more tasks to the TODO list Nicolas Saenz Julienne
2018-10-26 13:48   ` Nicolas Saenz Julienne
2018-10-28 21:11   ` Stefan Wahren
2018-10-28 21:11     ` Stefan Wahren

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