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Mon, 28 Sep 2026 10:56:14 +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 GBdDE85HumqYHAAAD6G6ig (envelope-from ); Mon, 28 Sep 2026 10:56:14 +0000 Date: Mon, 28 Sep 2026 12:56:13 +0200 Message-ID: <87ld8l7igi.wl-tiwai@suse.de> From: Takashi Iwai To: linux-sound@vger.kernel.org Cc: linux-kernel@vger.kernel.org Subject: Re: [PATCH RFC v2] ALSA: seq: Mark OSS sequencer emulation as deprecated In-Reply-To: <20260912124951.416761-1-tiwai@suse.de> References: <20260912124951.416761-1-tiwai@suse.de> User-Agent: Wanderlust/2.15.9 (Almost Unreal) Emacs/30.2 Mule/6.0 Precedence: bulk X-Mailing-List: linux-kernel@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=US-ASCII X-Spam-Score: -3.30 X-Spam-Level: X-Spamd-Result: default: False [-3.30 / 50.00]; BAYES_HAM(-3.00)[99.99%]; MID_CONTAINS_FROM(1.00)[]; NEURAL_HAM_LONG(-1.00)[-1.000]; NEURAL_HAM_SHORT(-0.20)[-0.995]; MIME_GOOD(-0.10)[text/plain]; RCPT_COUNT_TWO(0.00)[2]; RCVD_VIA_SMTP_AUTH(0.00)[]; ARC_NA(0.00)[]; RCVD_TLS_ALL(0.00)[]; DKIM_SIGNED(0.00)[suse.de:s=susede2_rsa,suse.de:s=susede2_ed25519]; TO_MATCH_ENVRCPT_ALL(0.00)[]; FROM_HAS_DN(0.00)[]; MIME_TRACE(0.00)[0:+]; FROM_EQ_ENVFROM(0.00)[]; TO_DN_NONE(0.00)[]; RCVD_COUNT_TWO(0.00)[2]; DBL_BLOCKED_OPENRESOLVER(0.00)[imap1.dmz-prg2.suse.org:helo,suse.de:mid,suse.de:email] X-Spam-Flag: NO On Sat, 12 Sep 2026 14:49:45 +0200, Takashi Iwai wrote: > > OSS sequencer API emulation has been implemented as a client of ALSA > sequencer, decades ago, at the time where OSS was still use. But the > API itself became very niche, and almost noone using it for a real > purpose any longer -- only exceptions are AI and fuzzers, who have > been causing significant maintenance burden for issues they hit & > found. > > Meanwhile, the most features of OSS sequencer API emulation can be > achieved in user-space, either by ALSA-OSS layer (aoss) or oss-seq-emu > program: > https://github.com/alsa-project/alsa-oss > https://github.com/tiwai/oss-seq-emu > where the former is LD_PRELOAD wrapper and the latter is a CUSE-based > daemon. So we can drop the stuff from the kernel sooner or later. > > Now, let's mark the OSS sequencer emulation as deprecated and give a > warning when loaded, so that we can drop it later actually. > > Signed-off-by: Takashi Iwai Since there has been no objection, I'm going to queue this for 7.4. thanks, Takashi