Messages in this thread | | | Date | Mon, 2 Oct 2023 11:09:35 -0400 | From | Steven Rostedt <> | Subject | Re: [PATCH] tracing: document buffer_size_kb more precisely |
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On Tue, 26 Sep 2023 11:38:14 +0100 Christian Loehle <christian.loehle@arm.com> wrote:
> >> @@ -191,7 +191,7 @@ of ftrace. Here is a list of some of the key files: > >> A few extra pages may be allocated to accommodate buffer management > >> meta-data. If the last page allocated has room for more bytes > >> than requested, the rest of the page will be used, > >> - making the actual allocation bigger than requested or shown. > >> + making the actual allocation bigger than requested. > > > > Hi, the actual allocation should still be bigger than shown due to the > > loss of accuracy when doing unit conversion from bytes to kilobytes (see > > tracing_entries_read()). > > > Right, the sysfs obviously only allows for KB aligned setting, but you're right. > If set on the cmdline non-KB multiples are possible and accuracy is lost. > Nevermind then.
I'm assuming this patch can be dropped?
-- Steve
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