[PATCH] gnu: linux-libre: Parallelize linux-libre module installation

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  • Richard Sent
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Richard Sent
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Richard Sent wrote on 24 May 18:49 +0200
(address . guix-patches@gnu.org)(name . Richard Sent)(address . richard@freakingpenguin.com)
f74cb275dc156964a8f109482b834e2f2705b6f9.1716569382.git.richard@freakingpenguin.com
* gnu/packages/linux.scm (make-linux-libre*): Parallelize kernel module
installation when possible.

Change-Id: I6ee8223d8a4a33f92907498d7f2b95675b2aa940
---
Hi Guix!

This patch aims to speed up the kernel build process. Because module
installation has a fair amount of CPU activity (GZIP+STRIP), it
benefits from additional jobs. On my 32 logical core machine, the
install phase of linux-libre went from 45.4 seconds to 9.4 seconds.

gnu/packages/linux.scm | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)

Toggle diff (27 lines)
diff --git a/gnu/packages/linux.scm b/gnu/packages/linux.scm
index a9b78a7986..1357be4e86 100644
--- a/gnu/packages/linux.scm
+++ b/gnu/packages/linux.scm
@@ -1041,7 +1041,7 @@ (define* (make-linux-libre* version gnu-revision source supported-systems
(close-port port))
(invoke "make" "oldconfig"))))
(replace 'install
- (lambda _
+ (lambda* (#:key parallel-build? #:allow-other-keys)
(let ((moddir (string-append #$output "/lib/modules"))
(dtbdir (string-append #$output "/lib/dtbs")))
;; Install kernel image, kernel configuration and link map.
@@ -1056,6 +1056,9 @@ (define* (make-linux-libre* version gnu-revision source supported-systems
;; Install kernel modules
(mkdir-p moddir)
(invoke "make"
+ "-j" (if parallel-build?
+ (number->string (parallel-job-count))
+ "1")
;; Disable depmod because the Guix system's module
;; directory is an union of potentially multiple
;; packages. It is not possible to use depmod to

base-commit: 9901416233867233192b63fde7f616751127b189
--
2.41.0
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Richard Sent wrote on 30 May 05:02 +0200
control message for bug #71175
(address . control@debbugs.gnu.org)
87r0dk80ja.fsf@freakingpenguin.com
close 71175
quit
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Richard Sent wrote on 30 May 05:02 +0200
Re: [bug#71175] [PATCH] gnu: linux-libre: Parallelize linux-libre module installation
(address . 71175@debbugs.gnu.org)
87o78o80iq.fsf@freakingpenguin.com
Closing due to c3566fccb6fa25b70bf2e78fafe71f9048a6a719.

--
Take it easy,
Richard Sent
Making my computer weirder one commit at a time.
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