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| author | Kuan-Wei Chiu <visitorckw@gmail.com> | 2024-10-11 22:12:14 +0800 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2024-11-05 17:12:32 -0800 |
| commit | bf9850f6ea3577a099b0ed43f6e19ca43ef08704 (patch) | |
| tree | 1a75208b698f9d72382fe33cfbab0f88a3893a97 | |
| parent | 8801c35c3672c8492824f5d3c4d3b37f43ed63c3 (diff) | |
| download | lwn-bf9850f6ea3577a099b0ed43f6e19ca43ef08704.tar.gz lwn-bf9850f6ea3577a099b0ed43f6e19ca43ef08704.zip | |
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/
Link: https://lkml.kernel.org/r/20241011141214.87096-1-visitorckw@gmail.com
Signed-off-by: Kuan-Wei Chiu <visitorckw@gmail.com>
Suggested-by: Waiman Long <llong@redhat.com>
Acked-by: Waiman Long <longman@redhat.com>
Acked-by: Tejun Heo <tj@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Cc: Ching-Chun (Jim) Huang <jserv@ccns.ncku.edu.tw>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Michal Koutný <mkoutny@suse.com>
Cc: Xavier <xavier_qy@163.com>
Cc: Zefan Li <lizefan.x@bytedance.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
| -rw-r--r-- | init/Kconfig | 1 | ||||
| -rw-r--r-- | lib/Kconfig | 3 | ||||
| -rw-r--r-- | lib/Makefile | 3 |
3 files changed, 6 insertions, 1 deletions
diff --git a/init/Kconfig b/init/Kconfig index c521e1421ad4..5cb9b9490f30 100644 --- a/init/Kconfig +++ b/init/Kconfig @@ -1157,6 +1157,7 @@ config CGROUP_HUGETLB config CPUSETS bool "Cpuset controller" depends on SMP + select UNION_FIND help This option will let you create and manage CPUSETs which allow dynamically partitioning a system into sets of CPUs and diff --git a/lib/Kconfig b/lib/Kconfig index b38849af6f13..cf303bd91dda 100644 --- a/lib/Kconfig +++ b/lib/Kconfig @@ -777,3 +777,6 @@ config POLYNOMIAL config FIRMWARE_TABLE bool + +config UNION_FIND + bool diff --git a/lib/Makefile b/lib/Makefile index 1faed6414a85..feebed74fc7a 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-$(CONFIG_UNION_FIND) += union_find.o lib-$(CONFIG_PRINTK) += dump_stack.o lib-$(CONFIG_SMP) += cpumask.o |