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linux/Documentation/userspace-api/ioctl
Steven Rostedt (Google) 4ecaf7e98a tracing: Have memmapped ring buffer use ioctl of "R" range 0x20-2F
To prevent conflicts with other ioctl numbers to allow strace to have an
idea of what is happening, add the range of ioctls for the trace buffer
mapping from _IO("T", 0x1) to the range of "R" 0x20 - 0x2F.

Link: https://lore.kernel.org/linux-trace-kernel/20240630105322.GA17573@altlinux.org/
Link: https://lore.kernel.org/linux-trace-kernel/20240630213626.GA23566@altlinux.org/

Cc: Jonathan Corbet <corbet@lwn.net>
Fixes: cf9f0f7c4c ("tracing: Allow user-space mapping of the ring-buffer")
Link: https://lore.kernel.org/20240702153354.367861db@rorschach.local.home
Reported-by: "Dmitry V. Levin" <ldv@strace.io>
Reviewed-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Acked-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
2024-07-03 16:40:45 -04:00
..
cdrom.rst cdrom: mark CDROMGETSPINDOWN/CDROMSETSPINDOWN obsolete 2022-05-15 18:31:28 -06:00
hdio.rst ide: remove the legacy ide driver 2021-06-16 08:53:58 -06:00
index.rst docs: Move the user-space ioctl() docs to userspace-api 2019-10-10 11:21:54 -06:00
ioctl-decoding.rst docs: Move the user-space ioctl() docs to userspace-api 2019-10-10 11:21:54 -06:00
ioctl-number.rst tracing: Have memmapped ring buffer use ioctl of "R" range 0x20-2F 2024-07-03 16:40:45 -04:00