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b=uKt5sKhK78voZ4DAT1xewnszlqjH75nDY0g+Oj4e4zdE7/wJOnCKaGQlobO1tqotg4bdbm 7RRbKrfBysLpgZAw== Received: from imap1.dmz-prg2.suse.org (localhost [127.0.0.1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by imap1.dmz-prg2.suse.org (Postfix) with ESMTPS id 0CB324273C; Tue, 17 Mar 2026 08:17:34 +0000 (UTC) Received: from dovecot-director2.suse.de ([2a07:de40:b281:106:10:150:64:167]) by imap1.dmz-prg2.suse.org with ESMTPSA id TNW1AR4OuWmSXAAAD6G6ig (envelope-from ); Tue, 17 Mar 2026 08:17:34 +0000 Date: Tue, 17 Mar 2026 09:17:33 +0100 Message-ID: <87bjgmg99e.wl-tiwai@suse.de> From: Takashi Iwai To: =?ISO-8859-1?Q?C=E1ssio?= Gabriel Cc: Takashi Iwai , Jaroslav Kysela , linux-sound@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH] ALSA: timer: keep a list of open masters for slave lookup In-Reply-To: <20260316-alsa-timer-master-list-v1-1-fb95e547110a@gmail.com> References: <20260316-alsa-timer-master-list-v1-1-fb95e547110a@gmail.com> User-Agent: Wanderlust/2.15.9 (Almost Unreal) Emacs/30.2 Mule/6.0 Precedence: bulk X-Mailing-List: linux-sound@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 (generated by SEMI-EPG 1.14.7 - "Harue") Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 8bit X-Rspamd-Action: no action X-Rspamd-Server: rspamd2.dmz-prg2.suse.org X-Spamd-Result: default: False [-3.51 / 50.00]; BAYES_HAM(-3.00)[99.99%]; MID_CONTAINS_FROM(1.00)[]; NEURAL_HAM_LONG(-1.00)[-1.000]; R_DKIM_ALLOW(-0.20)[suse.de:s=susede2_rsa,suse.de:s=susede2_ed25519]; NEURAL_HAM_SHORT(-0.20)[-1.000]; MIME_GOOD(-0.10)[text/plain]; MX_GOOD(-0.01)[]; ASN(0.00)[asn:32098, ipnet:2800::/6, country:US]; FREEMAIL_TO(0.00)[gmail.com]; ARC_NA(0.00)[]; TO_DN_SOME(0.00)[]; MIME_TRACE(0.00)[0:+]; FUZZY_RATELIMITED(0.00)[rspamd.com]; RCVD_VIA_SMTP_AUTH(0.00)[]; FREEMAIL_ENVRCPT(0.00)[gmail.com]; DKIM_SIGNED(0.00)[suse.de:s=susede2_rsa,suse.de:s=susede2_ed25519]; FROM_EQ_ENVFROM(0.00)[]; FROM_HAS_DN(0.00)[]; RCPT_COUNT_FIVE(0.00)[5]; RCVD_TLS_ALL(0.00)[]; DBL_BLOCKED_OPENRESOLVER(0.00)[suse.de:dkim,suse.de:mid]; RCVD_COUNT_TWO(0.00)[2]; TO_MATCH_ENVRCPT_ALL(0.00)[]; DKIM_TRACE(0.00)[suse.de:+] X-Rspamd-Queue-Id: 404AB4D240 X-Spam-Flag: NO X-Spam-Score: -3.51 X-Spam-Level: On Mon, 16 Mar 2026 14:39:38 +0100, Cássio Gabriel wrote: > > snd_timer_check_slave() still walks all registered timers and all open > timer instances to find a matching master for a newly opened slave. > > Maintain a global list of open master instances that can accept slave > links and use it for the slave lookup path instead. This keeps the > existing matching semantics while avoiding the nested walk over > snd_timer_list and each timer open_list_head. > > The reverse path in snd_timer_check_master() already scans only the > pending slave list, so this makes both lookup paths closer in shape > without changing the master/slave linking logic. > > Signed-off-by: Cássio Gabriel Thanks, applied to for-next branch now. Takashi