ring_buffer_subbuf_size_get(9)
π¦ ring_buffer_subbuf_size_get β Kernel API Manual π¦
okay bestie, welcome to the ring_buffer_subbuf_size_get(9) page, live from the Kernel API Manual itself π
this one's short and sweet and honestly kind of a serve.
β¨ NAME β¨
ring_buffer_subbuf_size_get β literally just get the size of the sub buffer π
β¨ SYNOPSIS β¨
int ring_buffer_subbuf_size_get (struct trace_buffer *buffer );
like, that's the whole vibe. one function, one arg, returns an int.
β¨ ARGUMENTS β¨
bufferβ the buffer you wanna get the sub buffer size from π«Ά hand it over and it tells you the tea.
β¨ DESCRIPTION β¨
Returns the size of the sub buffer, in bytes β¨ that's it, that's the whole function. no cap, it really is that simple. it's giving "small but mighty" π
β¨ SEE ALSO β¨
Kernel file ./kernel/trace/ring_buffer.c β go read it, it's right there π
and then the whole friend group, fr fr:
ring_buffer_event_length(9)ring_buffer_event_data(9)rb_page_capacity(9)rb_subbuf_capacity(9)rb_subbuf_max_data_size(9)rb_subbuf_start(9)ring_buffer_event_time_stamp(9)ring_buffer_nr_dirty_pages(9)ring_buffer_wake_waiters(9)ring_buffer_wait(9)ring_buffer_poll_wait(9)rb_check_pages(9)rb_validate_buffer(9)__ring_buffer_alloc(9)__ring_buffer_alloc_range(9)__ring_buffer_alloc_remote(9)ring_buffer_free(9)ring_buffer_resize(9)rb_update_event(9)ring_buffer_nest_start(9)ring_buffer_nest_end(9)ring_buffer_unlock_commit(9)ring_buffer_lock_reserve(9)ring_buffer_discard_commit(9)ring_buffer_write(9)ring_buffer_record_disable(9)ring_buffer_record_enable(9)ring_buffer_record_off(9)ring_buffer_record_on(9)ring_buffer_record_is_on(9)ring_buffer_record_is_set_on(9)ring_buffer_record_is_on_cpu(9)ring_buffer_record_disable_cpu(9)ring_buffer_record_enable_cpu(9)ring_buffer_oldest_event_ts(9)ring_buffer_bytes_cpu(9)ring_buffer_entries_cpu(9)ring_buffer_overrun_cpu(9)ring_buffer_commit_overrun_cpu(9)ring_buffer_dropped_events_cpu(9)ring_buffer_read_events_cpu(9)ring_buffer_entries(9)ring_buffer_overruns(9)ring_buffer_iter_reset(9)ring_buffer_iter_empty(9)ring_buffer_peek(9)ring_buffer_iter_peek(9)ring_buffer_consume(9)ring_buffer_read_start(9)ring_buffer_read_finish(9)ring_buffer_iter_advance(9)ring_buffer_size(9)ring_buffer_max_event_size(9)ring_buffer_reset_cpu(9)ring_buffer_reset_online_cpus(9)ring_buffer_reset(9)ring_buffer_empty(9)ring_buffer_empty_cpu(9)ring_buffer_swap_cpu(9)ring_buffer_alloc_read_page(9)ring_buffer_free_read_page(9)ring_buffer_read_page(9)ring_buffer_read_page_data(9)ring_buffer_read_page_size(9)ring_buffer_subbuf_order_get(9)ring_buffer_subbuf_order_set(9)
kay that's the whole page bestie, ily, go read the source π§
shoutout to the source dir ./kernel/trace, the version is the Kernel API Manual, and this was dated October 2026 β see u in the next one, mwah πβ¨π
π¦ where this page comes from
- nixpkgs unstable: linux-manual 7.3.1
- π girlified by deepseek-ai/DeepSeek-V4.1-Flash-1017 on : a language model's rewrite of the original, under its terms