This patch adds the following logic to the release build:
pgo/profiles/profile.profdata.xz is the default profile file, compressed.
This file is stored in version control using git LFS.
A ninja rule is added which creates build/profile.profdata by decompressing it.
If no profile file is explicitly specified, ./configure.py checks whether
the compressed default profile file exists and is compressed.
(If it exists, but isn't compressed, the user most likely has
git lfs disabled or not installed. In this case, the file visible in the working
tree will be the LFS placeholder text file describing the LFS metadata.)
If the compressed file exists, build/profile.profdata is chosen as the used
profile file.
If it doesn't exist, a warning is printed and configure.py falls back
to a profileless build.
The default profile file can be explicitly disabled by passing the empty
--use-profile="" to configure.py
A script is added which re-generates the profile.
After the script is run, the re-generated compressed profile can be staged,
committed, pushed and merged to update the default profile.
The goal is the same as in 29768a2d02 (gitattributes: Mark *.svg as
binary) -- prevent grep from searching patterns in those files.
Despite those files are, in fact, javascript code, the way they are
formatted is not suitable for human reading, so it's unlikely that anyone
would be interested in grep-ing patters in it. At the same time, those
files consist of of very long lines, so if a grep finds a pattern in one
of those, the output is spoiled.
Signed-off-by: Pavel Emelyanov <xemul@scylladb.com>
Closesscylladb/scylladb#19357
The goal is to put .svg files under git grep's radar. Otherwise a
pretty innocent 'git grep db::is_local' dumps the contents of the
docs/kb/flamegraph.svg on the screen, because it a) contains the
grep pattern and b) is looooong one-liner
Signed-off-by: Pavel Emelyanov <xemul@scylladb.com>
Message-Id: <20220730090026.8537-1-xemul@scylladb.com>
