tree dee40eeb11c908e500b75017c4e8aba889d70e26
parent 0a46992d4f85f0ded8d1ad271f2e22397b5dd9fe
author Steven Rostedt (Google) <rostedt@goodmis.org> 1729195403 -0400
committer Steven Rostedt (Google) <rostedt@goodmis.org> 1732309924 -0500

libtracefs utest: Fix min percent test

On PowerPC 64 which has 64K pages, it screws up the accounting of some
calculations used for tests. For instance, 1% of the ring buffer may not
be more than a page. So testing 1% and then subtracting the number of
events per page is going to lead to a negative number. This will obviously
fail.

Take into account that the subbuffer may be very large, and to make a
minimum percent to use in case a subbuffer size is greater than 1%.

Link: https://lore.kernel.org/20241017200609.932728-3-rostedt@goodmis.org
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=219358
Reported-by: Adrien Nader <adrien@notk.org>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>