+ lib-makefile-make-union-find-compilation-conditional-on-config_cpusets.patch added to mm-nonmm-unstable branch

+ lib-makefile-make-union-find-compilation-conditional-on-config_cpusets.patch added to mm-nonmm-unstable branch

[Andrew Morton]

[-- Warning: decoded text below may be mangled, UTF-8 assumed --]
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The patch titled
     Subject: lib/Makefile: make union-find compilation conditional on CONFIG_CPUSETS
has been added to the -mm mm-nonmm-unstable branch.  Its filename is
     lib-makefile-make-union-find-compilation-conditional-on-config_cpusets.patch

This patch will shortly appear at
     https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/lib-makefile-make-union-find-compilation-conditional-on-config_cpusets.patch

This patch will later appear in the mm-nonmm-unstable branch at
    git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Before you just go and hit "reply", please:
   a) Consider who else should be cc'ed
   b) Prefer to cc a suitable mailing list as well
   c) Ideally: find the original patch on the mailing list and do a
      reply-to-all to that, adding suitable additional cc's

*** Remember to use Documentation/process/submit-checklist.rst when testing your code ***

The -mm tree is included into linux-next via the mm-everything
branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
and is updated there every 2-3 working days

------------------------------------------------------
From: Kuan-Wei Chiu <visitorckw@gmail.com>
Subject: lib/Makefile: make union-find compilation conditional on CONFIG_CPUSETS
Date: Wed, 9 Oct 2024 23:40:22 +0800

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/20241009154022.2432662-1-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>
Cc: Ching-Chun (Jim) Huang <jserv@ccns.ncku.edu.tw>
Cc: Christoph Hellwig <hch@infradead.org>
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>
---

 lib/Makefile |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

--- a/lib/Makefile~lib-makefile-make-union-find-compilation-conditional-on-config_cpusets
+++ a/lib/Makefile
@@ -35,8 +35,9 @@ lib-y := ctype.o string.o vsprintf.o cmd
 	 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
 
_

Patches currently in -mm which might be from visitorckw@gmail.com are

lib-kconfigdebug-move-int_pow-test-option-to-runtime-testing-section.patch
lib-makefile-make-union-find-compilation-conditional-on-config_cpusets.patch

+ lib-makefile-make-union-find-compilation-conditional-on-config_cpusets.patch added to mm-nonmm-unstable branch

[Andrew Morton]

[-- Warning: decoded text below may be mangled, UTF-8 assumed --]
[-- Attachment #1: Type: text/plain, Size: 3670 bytes --]


The patch titled
     Subject: lib/Makefile: make union-find compilation conditional on CONFIG_CPUSETS
has been added to the -mm mm-nonmm-unstable branch.  Its filename is
     lib-makefile-make-union-find-compilation-conditional-on-config_cpusets.patch

This patch will shortly appear at
     https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/lib-makefile-make-union-find-compilation-conditional-on-config_cpusets.patch

This patch will later appear in the mm-nonmm-unstable branch at
    git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Before you just go and hit "reply", please:
   a) Consider who else should be cc'ed
   b) Prefer to cc a suitable mailing list as well
   c) Ideally: find the original patch on the mailing list and do a
      reply-to-all to that, adding suitable additional cc's

*** Remember to use Documentation/process/submit-checklist.rst when testing your code ***

The -mm tree is included into linux-next via the mm-everything
branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
and is updated there every 2-3 working days

------------------------------------------------------
From: Kuan-Wei Chiu <visitorckw@gmail.com>
Subject: lib/Makefile: make union-find compilation conditional on CONFIG_CPUSETS
Date: Fri, 11 Oct 2024 22:12:14 +0800

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>
Cc: Ching-Chun (Jim) Huang <jserv@ccns.ncku.edu.tw>
Cc: Christoph Hellwig <hch@infradead.org>
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>
---

 init/Kconfig |    1 +
 lib/Kconfig  |    3 +++
 lib/Makefile |    3 ++-
 3 files changed, 6 insertions(+), 1 deletion(-)

--- a/init/Kconfig~lib-makefile-make-union-find-compilation-conditional-on-config_cpusets
+++ a/init/Kconfig
@@ -1153,6 +1153,7 @@ 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
--- a/lib/Kconfig~lib-makefile-make-union-find-compilation-conditional-on-config_cpusets
+++ a/lib/Kconfig
@@ -777,3 +777,6 @@ config POLYNOMIAL
 
 config FIRMWARE_TABLE
 	bool
+
+config UNION_FIND
+	bool
--- a/lib/Makefile~lib-makefile-make-union-find-compilation-conditional-on-config_cpusets
+++ a/lib/Makefile
@@ -35,8 +35,9 @@ lib-y := ctype.o string.o vsprintf.o cmd
 	 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
 
_

Patches currently in -mm which might be from visitorckw@gmail.com are

lib-kconfigdebug-move-int_pow-test-option-to-runtime-testing-section.patch
lib-makefile-make-union-find-compilation-conditional-on-config_cpusets.patch