From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=209.85.216.51 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1793252685; b=3nJHFEvem3fMNodxori6+Q2n5D8GZmb249/B8FquBEDUuxA5oN8bSlNzbvgCtu8D92vV 4XYMekC7tgubJCJXww0M1xuKNFypwIolG7IttYxlUDcPonJZEqpqtbLWIpo112Qk0cz7H ZYaVEZBTqLNpU8rjRmEK6UCtWUVlriv/8UrrV8I0V1kYj2O2iYP12fnHe+9W7CQr/BtIT IppI3wrCw/G7qMHXGxEUqDWyiqqOU8OaYVVW54EIh9z0M1dQ+JCYsoWdwaJgBaCXFtYIA eY19z6NqcmaXENgr3ohHyYhd9c4TVo/OfdXCaLjtOrcIAnldgcF67DUTy0pIs2GA7Pw== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1793252685; h=DMARC-Filter:Received:DKIM-Signature:X-Google-DKIM-Signature: X-Forwarded-Encrypted:X-Gm-Message-State:X-Gm-Gg:X-Received:Received: From:To:Cc:Subject:Date:Message-ID:X-Mailer:In-Reply-To:References: MIME-Version:Content-Transfer-Encoding; bh=Z/l4dD/5O5m6RU90kbEhUZI1etATEz4+8y2FIjERE5k=; b=DXzf3JHiF0dbwMc0hSbZTmJYHsL2IFFmMpn6sJHNqTs8/xbRax4puuhf17EPEw0g/0XS on5vZcQK40l62ubr/3x7hNN/wYbArQARTThNl5re6YrahMGrPE0BL8qYdXJeA7m8t3bpU G9aY6Tw6cJHesTdV7/KIerlI/BwAmWZO0flFWzyv8AnQR47zQZUoxIgu2cDJIjvYKrfcp dMat68pHozis1Dos2mFLCsrM3YhfXpTcOIGJJUbTKCxgErg2uk+pewgE5dC1hn7uS4oy5 TBWku+WbvH1kXfcnjRxF+C4jEqxo4b/TbO+QZkaob5v9Eprvv1APIH6ZDA9jTCeW1ug== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256 header.s=20260707 header.b=m5LmMDWr; arc=none smtp.remote-ip=209.85.216.51 Received: from mail-pj1-f51.google.com (mail-pj1-f51.google.com [209.85.216.51]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange X25519 server-signature ECDSA (prime256v1) server-digest SHA256) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 6AD70606A32A for ; Thu, 29 Oct 2026 05:44:40 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.2 smtp.subspace.kernel.org 6AD70606A32A Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key, unprotected) header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256 header.s=20260707 header.b=m5LmMDWr Received: by mail-pj1-f51.google.com with SMTP id 98e67ed59e1d1-3ac9f49b984so193423a91.1 for ; Wed, 28 Oct 2026 22:44:40 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20260707; t=1793252680; x=1793857480; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to:content-type; bh=Z/l4dD/5O5m6RU90kbEhUZI1etATEz4+8y2FIjERE5k=; b=m5LmMDWr+lmuQPV0kt4U9ZIwpIoJlXLOh5g8jZKrwbtU120DE8Aq/3Ly2bk9gwfCT8 B3vtBQ/Jmi92vaT9EYbs6ZoifELrAilDDP97lLN7U6tcrg2hJOAfM4nI2B1cdRZP83Nu 55jIgfFx4ajlbt2shZ9M4liRCVwwbVXzxvXJvxc+StesB3Mshg6g7LdvTy8vOkfRWQkW AbjNzMniweYZckUj1XChiphsWy+1zO6Wzhrr6nIRqGog0VeGlEuEOJqIgxGY/pN7LO8j AE21jMY79c7oLQ+fDHw4vBP8CXE/4HAkypSBWsRiAAm9SBMdJa31s5/wOemC6JUa0JnB Fygg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20260707; t=1793252680; x=1793857480; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-gg:x-gm-message-state:from :to:cc:subject:date:message-id:reply-to:content-type; bh=Z/l4dD/5O5m6RU90kbEhUZI1etATEz4+8y2FIjERE5k=; b=TzsxIwt3moznSRzBV+KYQUwX6/LKgr7YfzFULJW5C0EIE0EmVGofuWR+Y7e+2ZxyRd /bgSzkYZaGsYxBuQWIKNMI7I09gN8vYGyaS4Ukon/htyLBngupugrPVnlK/qanDnsRjN n2UgO3CFbsHroDs7WuJ8fUASpCcFp0eowjdSk4jWF2HNiKWypyIqd0mtz41RtafyF0S+ H4vdIyy80jHsba2nFuPw3bjMCrqQrAmpinrWoL0KbGfdYA2GQKbTTnHeVQNm/pPQ55eR OY40dXdef/+7evx5MsRj2ly9vjHi3AS53eG1omH17iBLfouL4kIU6nTFpr0wDDjEQfD7 CcaQ== X-Forwarded-Encrypted: i=1; AKwUvBz82DEvb/3Yecc85eO2ZrhSFXBOurwLGQe3NhtUzCtpDsW+9675kGcCoHsj0fXZln4eXaSaLdd3BJ8=@vger.kernel.org X-Gm-Message-State: AFq9FYJyOS7/+PV1Fy+u9XH1JdLefRHF7bAFvXifPbAqtzsC6gTf7gNr B7QO9VtZJDKhlciAVWjZ4HMYB2f3oyG/KtV9Moii+tOEHc87X15rsVFS X-Gm-Gg: AYBFou1sWpLV4dxZltymIAlCf0mqnvHYxp04A2PePujFePQa+rczZDO7I4DuuKpWA8F 9UAczEd/Ol+7fQyEguGC0bvBs4MEgqJZKTQbdAd9eVssrerswBjZzDkcnFTZpYrViTRpOvMNB79 SmhAYlIvlhEKwvHfcypbTj9XKB7hcIrZ7tUT27dqfhbWflKNu8A1UO4gVMr3dKNZU8jxdQJaEee ni8A+JOZlAF2GSaOMvbwFXahDY3zXnnt/uUmUAs/GQOzeiNqIedU9TpUdCGzeLFfvtASm8+sCA+ 5vqtWf1N4BQrElEl/JryopVWbJFn6aq6jDwQjvVSHTYYD5T0urJmSbb6WkUuLc5AOBEFFete0QE igVcQszDf1js+YPsYY/eRhakFI8GAuVXXvFkDT77UP3UyRSohAh4lIxLcy0aJaW5WhLcLXcmlX3 wLTgFeFXyo/BqskmbXdaaGLJ5niDcRr4DBPX2YZhnc9SQ2pjG0/nWD4zSS0KdY075KINWp70FBp Xvt8cD5c4xvzcF7reVfURLb6NTrSAvE6k9Qtf1JNFk4YoanwojWXm2nV8+7Ki/JHR1mzb3BhJlb /TQJzeyBjdnTriR4r4fR88NGiqzJHCB2ihQO0e0+VLWA86yRlgurMUt9cXkInnnQvfcARv6DqUf V5nZjRZlZ9ukN0iPQOLwFxF6vYrfZ6LR2Uj5mbzaLVXgXD98= X-Received: by 2002:a17:90b:3d83:b0:3ae:3e9b:5265 with SMTP id 98e67ed59e1d1-3ae6ed4d633mr905165a91.26.1793252679788; Wed, 28 Oct 2026 22:44:39 -0700 (PDT) Received: from localhost.localdomain ([183.96.175.225]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-3ae6e83127csm2433520a91.10.2026.10.28.22.44.36 (version=TLS1_3 cipher=TLS_CHACHA20_POLY1305_SHA256 bits=256/256); Wed, 28 Oct 2026 22:44:39 -0700 (PDT) From: Joonho Lee To: linux-sound@vger.kernel.org Cc: tiwai@suse.de, perex@perex.cz, anton.yakovlev@opensynergy.com, mst@redhat.com, virtualization@lists.linux.dev, linux-kernel@vger.kernel.org, corbet@lwn.net, skhan@linuxfoundation.org, rdunlap@infradead.org, linux-doc@vger.kernel.org, Joonho Lee Subject: [PATCH v8 10/14] ALSA: virtio: prioritize staged capture period work Date: Thu, 29 Oct 2026 14:43:50 +0900 Message-ID: <20261029054354.2931-11-mynameisjune111@gmail.com> X-Mailer: git-send-email 2.54.0 In-Reply-To: <20261029054354.2931-1-mynameisjune111@gmail.com> References: <20261029054354.2931-1-mynameisjune111@gmail.com> X-Mailing-List: linux-doc@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Queue staged capture period notifications on system_highpri_wq through the common scheduling helper. This allows capture notifications to make progress when ordinary workqueue workers are delayed by CPU contention. Playback and ordinary capture keep schedule_work(). This preserves the existing priority proposal without mixing RESET or lifecycle changes into it. It provides no hard real-time deadline and cannot prevent a userspace reader from overrunning its buffer. Assisted-by: LLM Signed-off-by: Joonho Lee --- diff --git a/sound/virtio/virtio_pcm.h b/sound/virtio/virtio_pcm.h --- a/sound/virtio/virtio_pcm.h +++ b/sound/virtio/virtio_pcm.h @@ -146,10 +146,14 @@ runtime->stop_operating = true; } -/* Use one notification helper for all producers. */ +/* Keep non-staged PCM notifications on schedule_work()'s normal queue. */ static inline bool virtsnd_pcm_schedule_period_elapsed(struct virtio_pcm_substream *vss) { + if (vss->direction == SNDRV_PCM_STREAM_CAPTURE && + vss->capture_staging) + return queue_work(system_highpri_wq, &vss->elapsed_period); + return schedule_work(&vss->elapsed_period); }