linux-kernel - [PATCH] lib/Makefile: Make union-find compilation conditional on CONFIG

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-next>] [day] [month] [year] [list]

Message-Id: <20241009154022.2432662-1-visitorckw@gmail.com>
Date: Wed,  9 Oct 2024 23:40:22 +0800
From: Kuan-Wei Chiu <visitorckw@...il.com>
To: akpm@...ux-foundation.org,
	hch@...radead.org,
	llong@...hat.com,
	xavier_qy@....com
Cc: lizefan.x@...edance.com,
	tj@...nel.org,
	hannes@...xchg.org,
	mkoutny@...e.com,
	jserv@...s.ncku.edu.tw,
	linux-kernel@...r.kernel.org,
	cgroups@...r.kernel.org,
	Kuan-Wei Chiu <visitorckw@...il.com>
Subject: [PATCH] lib/Makefile: Make union-find compilation conditional on CONFIG_CPUSETS

Currently, cpuset is the only user of the union-find implementation.
Compiling union-find in all configurations unnecessarily increases the
code size when building the kernel without cgroup support. Modify the
build system to compile union-find only when CONFIG_CPUSETS is enabled.

Link: https://lore.kernel.org/lkml/1ccd6411-5002-4574-bb8e-3e64bba6a757@redhat.com/
Suggested-by: Waiman Long <llong@...hat.com>
Signed-off-by: Kuan-Wei Chiu <visitorckw@...il.com>
---
 lib/Makefile | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/lib/Makefile b/lib/Makefile
index 773adf88af41..53f82de7cbe2 100644
--- a/lib/Makefile
+++ b/lib/Makefile
@@ -35,8 +35,9 @@ lib-y := ctype.o string.o vsprintf.o cmdline.o \
 	 is_single_threaded.o plist.o decompress.o kobject_uevent.o \
 	 earlycpio.o seq_buf.o siphash.o dec_and_lock.o \
 	 nmi_backtrace.o win_minmax.o memcat_p.o \
-	 buildid.o objpool.o union_find.o
+	 buildid.o objpool.o
 
+lib-$(CONFIG_CPUSETS) += union_find.o
 lib-$(CONFIG_PRINTK) += dump_stack.o
 lib-$(CONFIG_SMP) += cpumask.o
 
-- 
2.34.1