From: "Mukunda,Vijendar" <vijendar.mukunda@amd.com>
To: broonie@kernel.org
Cc: alsa-devel@alsa-project.org, lgirdwood@gmail.com,
oder_chiou@realtek.com, "Shuming [范書銘]" <shumingf@realtek.com>,
"Pierre-Louis Bossart" <pierre-louis.bossart@linux.intel.com>,
vinod.koul@linaro.org, "vkoul@kernel.org" <vkoul@kernel.org>,
"Katragadda, Mastan" <mastan.katragadda@amd.com>,
"kondaveeti, Arungopal" <arungopal.kondaveeti@amd.com>,
"Hiregoudar, Basavaraj" <Basavaraj.Hiregoudar@amd.com>,
"Dommati, Sunil-kumar" <Sunil-kumar.Dommati@amd.com>,
"Mario Limonciello" <mario.limonciello@amd.com>,
"Bard Liao" <yung-chuan.liao@linux.intel.com>
Subject: Re: [BUG] ASoC: Use the maple tree register cache for RealTek SoundWire CODECs
Date: Mon, 26 Jun 2023 19:00:31 +0530 [thread overview]
Message-ID: <b8af4050-85e7-6974-9c44-c26cb6962972@amd.com> (raw)
In-Reply-To: <20230609-asoc-rt-sdw-maple-v1-0-85ee50c93905@kernel.org>
Hello,
With cache type changing to maple tree for SoundWire Codec patch series, we are observing
rcu warnings with AMD SoundWire stack.
Below are the pastebin links for rcu warnings dmesg logs.
https://pastebin.com/6sadwNCw <https://pastebin.com/6sadwNCw>
https://pastebin.com/zwhfUKGf <https://pastebin.com/zwhfUKGf>
Acquiring rcu lock in between register read/writes causes context switch.
In AMD SoundWire manager xfer_msg() callback, we are using read_poll_timeout logic.
Below is the link.
https://elixir.bootlin.com/linux/v6.4-rc7/source/drivers/soundwire/amd_manager.c#L177
As per our understanding, we need to go with busy wait rather than using usleep_range()
which will be invoked by read_poll_timeout() logic.
Could you please suggest us how to fix this issue?
Thanks,
Vijendar
next prev parent reply other threads:[~2023-06-26 13:27 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-06-10 14:27 [PATCH 0/8] ASoC: Use the maple tree register cache for RealTek SoundWire CODECs Mark Brown
2023-06-10 14:27 ` [PATCH 1/8] ASoC: rt700: Use maple tree register cache Mark Brown
2023-06-10 14:27 ` [PATCH 2/8] ASoC: rt711: " Mark Brown
2023-06-10 14:27 ` [PATCH 3/8] ASoC: rt712: " Mark Brown
2023-06-10 14:27 ` [PATCH 4/8] ASoC: rt715: " Mark Brown
2023-06-10 14:27 ` [PATCH 5/8] ASoC: rt722: " Mark Brown
2023-06-10 14:27 ` [PATCH 6/8] ASoC: rt1308: " Mark Brown
2023-06-10 14:27 ` [PATCH 7/8] ASoC: rt1316: " Mark Brown
2023-06-10 14:27 ` [PATCH 8/8] ASoC: rt1318: " Mark Brown
2023-06-14 1:15 ` [PATCH 0/8] ASoC: Use the maple tree register cache for RealTek SoundWire CODECs Liao, Bard
2023-06-15 12:53 ` Mark Brown
2023-06-26 13:30 ` Mukunda,Vijendar [this message]
2023-06-26 13:29 ` [BUG] " Mark Brown
2023-06-26 14:39 ` Mukunda,Vijendar
2023-06-27 5:20 ` Mukunda,Vijendar
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