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Thu, 5 Sep 2024 04:08:16 -0400 (EDT) Date: Thu, 5 Sep 2024 17:08:14 +0900 From: Takashi Sakamoto To: Takashi Iwai Cc: linux-kernel@vger.kernel.org, linux-sound@vger.kernel.org, apais@linux.microsoft.com, edmund.raile@protonmail.com, linux-media@vger.kernel.org, netdev@vger.kernel.org Subject: Re: [PATCH 5/5] ALSA: firewire: use nonatomic PCM operation Message-ID: <20240905080814.GB486563@workstation.local> Mail-Followup-To: Takashi Sakamoto , Takashi Iwai , linux-kernel@vger.kernel.org, linux-sound@vger.kernel.org, apais@linux.microsoft.com, edmund.raile@protonmail.com, linux-media@vger.kernel.org, netdev@vger.kernel.org References: <20240904125155.461886-1-o-takashi@sakamocchi.jp> <20240904125155.461886-6-o-takashi@sakamocchi.jp> <87wmjrh06d.wl-tiwai@suse.de> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <87wmjrh06d.wl-tiwai@suse.de> On Wed, Sep 04, 2024 at 06:07:54PM +0200, Takashi Iwai wrote: > On Wed, 04 Sep 2024 14:51:54 +0200, > Takashi Sakamoto wrote: > > > > In the former commits, the callback of isochronous context runs on usual > > work process. In the case, ALSA PCM device has a flag, nonatomic, to > > acquire mutex lock instead of spin lock for PCM substream group. > > > > This commit uses the flag. It has an advantage in the case that ALSA PCM > > application uses the large size of intermediate buffer, since it takes > > too long time even in tasklet softIRQ to process many of isochronous > > packets, then result in the delay of system event due to disabled IRQ so > > long. It is avertible to switch to nonatomic operation. > > > > Signed-off-by: Takashi Sakamoto > > Feel free to take my ack: > > Reviewed-by: Takashi Iwai Thanks for your ack ;) Regards Takashi Sakamoto