snd_pcm_stream_lock_irqsave(9)

💅 snd_pcm_stream_lock_irqsave(9) 💅

okay bestie, welcome to the Kernel API Manual ✨ this page is all about snd_pcm_stream_lock_irqsave and it’s lowkey a locking vibe check for your PCM stream 🫶.

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✨ NAME ✨

snd_pcm_stream_lock_irqsave — Lock the PCM stream. That’s the whole name, and yes it ate 💅.

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💖 SYNOPSIS 💖

the call is giving:

snd_pcm_stream_lock_irqsave (substream , flags );

no cap, that spacing is the original 💀.

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🎀 ARGUMENTS 🎀

• substream — PCM substream, the main character here 🎵.
• flags — irq flags, carry them carefully bestie 🚩.

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🦋 DESCRIPTION 🦋

okay so this locks the PCM stream like snd_pcm_stream_lock, but with the local IRQ — and that IRQ part is only when nonatomic is false ⚠️. In the nonatomic case, this is identical to snd_pcm_stream_lock, periodt. So yeah: same lock energy, extra IRQ behavior when nonatomic is false, and no extra drama when nonatomic is true 💅✨.

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🌈 SEE ALSO 🌈

Kernel file: ./include/sound/pcm.h 💖

the whole linked friend group:

• snd_pcm_stream_linked(9)
• snd_pcm_stream_lock_irqsave_nested(9)
• snd_pcm_group_for_each_entry(9)
• snd_pcm_running(9)
• __snd_pcm_set_state(9)
• bytes_to_samples(9)
• bytes_to_frames(9)
• samples_to_bytes(9)
• frames_to_bytes(9)
• frame_aligned(9)
• snd_pcm_lib_buffer_bytes(9)
• snd_pcm_lib_period_bytes(9)
• snd_pcm_playback_avail(9)
• snd_pcm_capture_avail(9)
• snd_pcm_playback_hw_avail(9)
• snd_pcm_capture_hw_avail(9)
• snd_pcm_playback_ready(9)
• snd_pcm_capture_ready(9)
• snd_pcm_playback_data(9)
• snd_pcm_playback_empty(9)
• snd_pcm_capture_empty(9)
• snd_pcm_trigger_done(9)
• params_channels(9)
• params_rate(9)
• params_period_size(9)
• params_periods(9)
• params_buffer_size(9)
• params_buffer_bytes(9)
• snd_pcm_hw_constraint_single(9)
• snd_pcm_format_cpu_endian(9)
• snd_pcm_set_sync(9)
• snd_pcm_set_runtime_buffer(9)
• snd_pcm_gettime(9)
• snd_pcm_set_fixed_buffer(9)
• snd_pcm_set_fixed_buffer_all(9)
• snd_pcm_sgbuf_get_addr(9)
• snd_pcm_sgbuf_get_chunk_size(9)
• snd_pcm_limit_isa_dma_size(9)
• snd_pcm_direction_name(9)
• snd_pcm_stream_str(9)
• snd_pcm_chmap_substream(9)
• pcm_format_to_bits(9)
• pcm_for_each_format(9)

okay bye bestie 🫶 this was the Kernel API Manual page for snd_pcm_stream_lock_irqsave(9), source/version ./include/sound, dated October 2026 ✨💅