Ohhoon Kwon fc1f5e980a mm: sparse: pass section_nr to find_memory_block ...

With CONFIG_SPARSEMEM_EXTREME enabled, __section_nr() which converts
mem_section to section_nr could be costly since it iterates all section
roots to check if the given mem_section is in its range.

On the other hand, __nr_to_section() which converts section_nr to
mem_section can be done in O(1).

Let's pass section_nr instead of mem_section ptr to find_memory_block() in
order to reduce needless iterations.

Link: https://lkml.kernel.org/r/20210707150212.855-3-ohoono.kwon@samsung.com
Signed-off-by: Ohhoon Kwon <ohoono.kwon@samsung.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Acked-by: Mike Rapoport <rppt@linux.ibm.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Cc: Baoquan He <bhe@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

2021-09-03 09:58:14 -07:00

..

firmware_loader

firmware_loader: fix use-after-free in firmware_fallback_sysfs

2021-07-29 17:22:15 +02:00

power

PM: domains: Improve runtime PM performance state handling

2021-08-25 20:15:54 +02:00

regmap

regmap: mdio: Reject invalid addresses

2021-06-14 15:00:29 +01:00

test

device property: Remove some casts in property-entry-test

2021-06-23 16:37:21 -06:00

arch_numa.c

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arch_topology.c

arch_topology: Avoid use-after-free for scale_freq_data

2021-07-01 07:32:14 +05:30

attribute_container.c

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auxiliary.c

driver core: auxiliary bus: Fix memory leak when driver_register() fail

2021-07-21 16:36:06 +02:00

base.h

driver core: Export device_driver_attach()

2021-06-21 15:29:24 -06:00

bus.c

driver core: Flow the return code from ->probe() through to sysfs bind

2021-06-21 15:29:24 -06:00

cacheinfo.c

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class.c

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component.c

component: Rename 'dev' to 'parent'

2021-05-27 15:49:59 +02:00

container.c

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core.c

PCI/MSI: Protect msi_desc::masked for multi-MSI

2021-08-10 10:59:20 +02:00

cpu.c

drivers/base: Constify static attribute_group structs

2021-06-04 15:06:28 +02:00

dd.c

drivers core: Fix oops when driver probe fails

2021-07-27 14:44:43 +02:00

devcoredump.c

devcoredump: remove contact information

2021-06-04 15:05:44 +02:00

devres.c

devres: Enable trace events

2021-06-15 17:14:36 +02:00

devtmpfs.c

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driver.c

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firmware.c

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hypervisor.c

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init.c

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isa.c

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Kconfig

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Makefile

devres: Enable trace events

2021-06-15 17:14:36 +02:00

map.c

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memory.c

mm: sparse: pass section_nr to find_memory_block

2021-09-03 09:58:14 -07:00

module.c

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node.c

Merge tag 'driver-core-5.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core

2021-07-05 13:51:41 -07:00

pinctrl.c

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platform-msi.c

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platform.c

drivers/base: Constify static attribute_group structs

2021-06-04 15:06:28 +02:00

property.c

Merge tag 'driver-core-5.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core

2021-07-05 13:51:41 -07:00

soc.c

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swnode.c

software node: Handle software node injection to an existing device properly

2021-06-23 19:34:58 +02:00

syscore.c

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topology.c

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trace.c

devres: Enable trace events

2021-06-15 17:14:36 +02:00

trace.h

devres: Enable trace events

2021-06-15 17:14:36 +02:00

transport_class.c

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