ring-buffer: Page size per ring buffer

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Currently the size of one sub buffer page is global for all buffers and
it is hard coded to one system page. In order to introduce configurable
ring buffer sub page size, the internal logic should be refactored to
work with sub page size per ring buffer.

Link: https://lore.kernel.org/linux-trace-devel/20211213094825.61876-3-tz.stoyanov@gmail.com
Link: https://lore.kernel.org/linux-trace-kernel/20231219185628.009147038@goodmis.org

Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Vincent Donnefort <vdonnefort@google.com>
Cc: Kent Overstreet <kent.overstreet@gmail.com>
Signed-off-by: Tzvetomir Stoyanov (VMware) <tz.stoyanov@gmail.com>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>

...

This commit is contained in:

Tzvetomir Stoyanov (VMware) 2023-12-19 13:54:16 -05:00 • committed by Steven Rostedt (Google)

parent d5cfbdfc96

commit 139f840021

5 changed files with 86 additions and 46 deletions

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2

include/linux/ring_buffer.h

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68

kernel/trace/ring_buffer.c

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kernel/trace/trace.c

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kernel/trace/trace.h

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kernel/trace/trace_events.c

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