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authorVlastimil Babka <vbabka@suse.cz>2022-11-11 11:04:55 +0100
committerVlastimil Babka <vbabka@suse.cz>2022-12-01 00:09:20 +0100
commit149b6fa228eda1d191abc440af7162264d716d90 (patch)
treef37c26668fbcdeb9eb44f90242578175e175a2b4 /arch/arm
parentbe784ba861b93c5cd2c0565c5819c290675b50be (diff)
downloadlinux-149b6fa228eda1d191abc440af7162264d716d90.tar.bz2
mm, slob: rename CONFIG_SLOB to CONFIG_SLOB_DEPRECATED
As explained in [1], we would like to remove SLOB if possible. - There are no known users that need its somewhat lower memory footprint so much that they cannot handle SLUB (after some modifications by the previous patches) instead. - It is an extra maintenance burden, and a number of features are incompatible with it. - It blocks the API improvement of allowing kfree() on objects allocated via kmem_cache_alloc(). As the first step, rename the CONFIG_SLOB option in the slab allocator configuration choice to CONFIG_SLOB_DEPRECATED. Add CONFIG_SLOB depending on CONFIG_SLOB_DEPRECATED as an internal option to avoid code churn. This will cause existing .config files and defconfigs with CONFIG_SLOB=y to silently switch to the default (and recommended replacement) SLUB, while still allowing SLOB to be configured by anyone that notices and needs it. But those should contact the slab maintainers and linux-mm@kvack.org as explained in the updated help. With no valid objections, the plan is to update the existing defconfigs to SLUB and remove SLOB in a few cycles. To make SLUB more suitable replacement for SLOB, a CONFIG_SLUB_TINY option was introduced to limit SLUB's memory overhead. There is a number of defconfigs specifying CONFIG_SLOB=y. As part of this patch, update them to select CONFIG_SLUB and CONFIG_SLUB_TINY. [1] https://lore.kernel.org/all/b35c3f82-f67b-2103-7d82-7a7ba7521439@suse.cz/ Cc: Russell King <linux@armlinux.org.uk> Cc: Aaro Koskinen <aaro.koskinen@iki.fi> Cc: Janusz Krzysztofik <jmkrzyszt@gmail.com> Cc: Tony Lindgren <tony@atomide.com> Cc: Jonas Bonn <jonas@southpole.se> Cc: Stefan Kristiansson <stefan.kristiansson@saunalahti.fi> Cc: Stafford Horne <shorne@gmail.com> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Cc: Rich Felker <dalias@libc.org> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Josh Triplett <josh@joshtriplett.org> Cc: Conor Dooley <conor@kernel.org> Cc: Damien Le Moal <damien.lemoal@opensource.wdc.com> Cc: Christophe Leroy <christophe.leroy@csgroup.eu> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Vlastimil Babka <vbabka@suse.cz> Acked-by: Aaro Koskinen <aaro.koskinen@iki.fi> # OMAP1 Reviewed-by: Damien Le Moal <damien.lemoal@opensource.wdc.com> # riscv k210 Acked-by: Arnd Bergmann <arnd@arndb.de> # arm Acked-by: Roman Gushchin <roman.gushchin@linux.dev> Acked-by: Mike Rapoport <rppt@linux.ibm.com> Reviewed-by: Christoph Lameter <cl@linux.com>
Diffstat (limited to 'arch/arm')
-rw-r--r--arch/arm/configs/clps711x_defconfig3
-rw-r--r--arch/arm/configs/collie_defconfig3
-rw-r--r--arch/arm/configs/multi_v4t_defconfig3
-rw-r--r--arch/arm/configs/omap1_defconfig3
-rw-r--r--arch/arm/configs/pxa_defconfig3
-rw-r--r--arch/arm/configs/tct_hammer_defconfig3
-rw-r--r--arch/arm/configs/xcep_defconfig3
7 files changed, 14 insertions, 7 deletions
diff --git a/arch/arm/configs/clps711x_defconfig b/arch/arm/configs/clps711x_defconfig
index 92481b2a88fa..adcee238822a 100644
--- a/arch/arm/configs/clps711x_defconfig
+++ b/arch/arm/configs/clps711x_defconfig
@@ -14,7 +14,8 @@ CONFIG_ARCH_EDB7211=y
CONFIG_ARCH_P720T=y
CONFIG_AEABI=y
# CONFIG_COREDUMP is not set
-CONFIG_SLOB=y
+CONFIG_SLUB=y
+CONFIG_SLUB_TINY=y
CONFIG_NET=y
CONFIG_PACKET=y
CONFIG_UNIX=y
diff --git a/arch/arm/configs/collie_defconfig b/arch/arm/configs/collie_defconfig
index 2a2d2cb3ce2e..69341c33e0cc 100644
--- a/arch/arm/configs/collie_defconfig
+++ b/arch/arm/configs/collie_defconfig
@@ -13,7 +13,8 @@ CONFIG_CMDLINE="noinitrd root=/dev/mtdblock2 rootfstype=jffs2 fbcon=rotate:1"
CONFIG_FPE_NWFPE=y
CONFIG_PM=y
# CONFIG_SWAP is not set
-CONFIG_SLOB=y
+CONFIG_SLUB=y
+CONFIG_SLUB_TINY=y
CONFIG_NET=y
CONFIG_PACKET=y
CONFIG_UNIX=y
diff --git a/arch/arm/configs/multi_v4t_defconfig b/arch/arm/configs/multi_v4t_defconfig
index e2fd822f741a..b60000a89aff 100644
--- a/arch/arm/configs/multi_v4t_defconfig
+++ b/arch/arm/configs/multi_v4t_defconfig
@@ -25,7 +25,8 @@ CONFIG_ARM_CLPS711X_CPUIDLE=y
CONFIG_JUMP_LABEL=y
CONFIG_PARTITION_ADVANCED=y
# CONFIG_COREDUMP is not set
-CONFIG_SLOB=y
+CONFIG_SLUB=y
+CONFIG_SLUB_TINY=y
CONFIG_MTD=y
CONFIG_MTD_CMDLINE_PARTS=y
CONFIG_MTD_BLOCK=y
diff --git a/arch/arm/configs/omap1_defconfig b/arch/arm/configs/omap1_defconfig
index 70511fe4b3ec..246f1bba7df5 100644
--- a/arch/arm/configs/omap1_defconfig
+++ b/arch/arm/configs/omap1_defconfig
@@ -42,7 +42,8 @@ CONFIG_MODULE_FORCE_UNLOAD=y
CONFIG_PARTITION_ADVANCED=y
CONFIG_BINFMT_MISC=y
# CONFIG_SWAP is not set
-CONFIG_SLOB=y
+CONFIG_SLUB=y
+CONFIG_SLUB_TINY=y
# CONFIG_VM_EVENT_COUNTERS is not set
CONFIG_NET=y
CONFIG_PACKET=y
diff --git a/arch/arm/configs/pxa_defconfig b/arch/arm/configs/pxa_defconfig
index d60cc9cc4c21..0a0f12df40b5 100644
--- a/arch/arm/configs/pxa_defconfig
+++ b/arch/arm/configs/pxa_defconfig
@@ -49,7 +49,8 @@ CONFIG_PARTITION_ADVANCED=y
CONFIG_LDM_PARTITION=y
CONFIG_CMDLINE_PARTITION=y
CONFIG_BINFMT_MISC=y
-CONFIG_SLOB=y
+CONFIG_SLUB=y
+CONFIG_SLUB_TINY=y
# CONFIG_COMPACTION is not set
CONFIG_NET=y
CONFIG_PACKET=y
diff --git a/arch/arm/configs/tct_hammer_defconfig b/arch/arm/configs/tct_hammer_defconfig
index 3b29ae1fb750..6bd38b6f22c4 100644
--- a/arch/arm/configs/tct_hammer_defconfig
+++ b/arch/arm/configs/tct_hammer_defconfig
@@ -19,7 +19,8 @@ CONFIG_FPE_NWFPE=y
CONFIG_MODULES=y
CONFIG_MODULE_UNLOAD=y
# CONFIG_SWAP is not set
-CONFIG_SLOB=y
+CONFIG_SLUB=y
+CONFIG_SLUB_TINY=y
CONFIG_NET=y
CONFIG_PACKET=y
CONFIG_UNIX=y
diff --git a/arch/arm/configs/xcep_defconfig b/arch/arm/configs/xcep_defconfig
index ea59e4b6bfc5..6bd9f71b71fc 100644
--- a/arch/arm/configs/xcep_defconfig
+++ b/arch/arm/configs/xcep_defconfig
@@ -26,7 +26,8 @@ CONFIG_MODULE_UNLOAD=y
CONFIG_MODVERSIONS=y
CONFIG_MODULE_SRCVERSION_ALL=y
# CONFIG_BLOCK is not set
-CONFIG_SLOB=y
+CONFIG_SLUB=y
+CONFIG_SLUB_TINY=y
# CONFIG_COMPAT_BRK is not set
# CONFIG_VM_EVENT_COUNTERS is not set
CONFIG_NET=y