Re: [RFC PATCH 0/3] Introduce configurable ring buffer page size

[Steven Rostedt <rostedt@goodmis.org>]

On Wed, 17 Nov 2021 17:40:58 +0200
"Tzvetomir Stoyanov (VMware)" <tz.stoyanov@gmail.com> wrote:

> From: "Tzvetomir Stoyanov (VMware)" <tstoyanov@vmware.com>
> 
> Currently the size of one buffer page is global for all buffers and it
> is hard coded to one system page. The patch set introduces configurable
> ring buffer page size, per ring buffer. A new user space interface is
> introduced, which allows to change the page size of the ftrace buffer, per
> ftrace instance.

A few of nits.

1. Even the cover letter should have a category ("tracing:").
2. The category is "tracing:" not "trace:"
3. These are kernel changes and should be sent to lkml and not
   linux-trace-devel, as that mailing list is for tooling.

-- Steve

> 
> Tzvetomir Stoyanov (VMware) (3):
>   [RFC] trace: Page size per ring buffer
>   [RFC] trace: Add interface for configuring trace ring buffer size
>   [WiP] trace: Set new size of the ring buffer page
> 
>  include/linux/ring_buffer.h |   5 +-
>  kernel/trace/ring_buffer.c  | 251 +++++++++++++++++++++++++++---------
>  kernel/trace/trace.c        |  47 +++++++
>  kernel/trace/trace_events.c |  71 ++++++++--
>  4 files changed, 304 insertions(+), 70 deletions(-)
>