linux-kernel - [PATCH v4 6/7] scripts/make_fit: Support a few more parallel compressors

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20251006230205.521341-7-sjg@chromium.org>
Date: Mon,  6 Oct 2025 17:01:57 -0600
From: Simon Glass <sjg@...omium.org>
To: linux-arm-kernel@...ts.infradead.org
Cc: Chen-Yu Tsai <wenst@...omium.org>,
	Ahmad Fatoum <a.fatoum@...gutronix.de>,
	Masahiro Yamada <masahiroy@...nel.org>,
	J . Neuschäfer <j.ne@...teo.net>,
	Nicolas Schier <nicolas@...sle.eu>,
	Tom Rini <trini@...sulko.com>,
	Simon Glass <sjg@...omium.org>,
	David Sterba <dsterba@...e.com>,
	Nick Terrell <terrelln@...com>,
	linux-kernel@...r.kernel.org
Subject: [PATCH v4 6/7] scripts/make_fit: Support a few more parallel compressors

Add support for pbzip2 and plzip which can compress in parallel. This
speeds up the ramdisk compression.

Signed-off-by: Simon Glass <sjg@...omium.org>
---

(no changes since v1)

 scripts/make_fit.py | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/scripts/make_fit.py b/scripts/make_fit.py
index 3db129f40b20..10a040f4eb83 100755
--- a/scripts/make_fit.py
+++ b/scripts/make_fit.py
@@ -57,10 +57,10 @@ import libfdt
 CompTool = collections.namedtuple('CompTool', 'ext,tools')
 
 COMP_TOOLS = {
-    'bzip2': CompTool('.bz2', 'bzip2'),
+    'bzip2': CompTool('.bz2', 'pbzip2,bzip2'),
     'gzip': CompTool('.gz', 'pigz,gzip'),
     'lz4': CompTool('.lz4', 'lz4'),
-    'lzma': CompTool('.lzma', 'lzma'),
+    'lzma': CompTool('.lzma', 'plzip,lzma'),
     'lzo': CompTool('.lzo', 'lzop'),
     'zstd': CompTool('.zstd', 'zstd'),
 }
@@ -220,7 +220,12 @@ def compress_data(inf, compress):
             done = False
             for tool in comp.tools.split(','):
                 try:
-                    subprocess.call([tool, '-c'], stdin=inf, stdout=outf)
+                    # Add parallel flags for tools that support them
+                    cmd = [tool]
+                    if tool in ('zstd', 'xz'):
+                        cmd.extend(['-T0'])  # Use all available cores
+                    cmd.append('-c')
+                    subprocess.call(cmd, stdin=inf, stdout=outf)
                     done = True
                     break
                 except FileNotFoundError:
-- 
2.43.0