linux/kernel/power
Barry Song 54f7a49c20 mm: remove the implementation of swap_free() and always use swap_free_nr()
To streamline maintenance efforts, we propose removing the implementation
of swap_free().  Instead, we can simply invoke swap_free_nr() with nr set
to 1.  swap_free_nr() is designed with a bitmap consisting of only one
long, resulting in overhead that can be ignored for cases where nr equals
1.

A prime candidate for leveraging swap_free_nr() lies within
kernel/power/swap.c.  Implementing this change facilitates the adoption of
batch processing for hibernation.

Link: https://lkml.kernel.org/r/20240529082824.150954-3-21cnbao@gmail.com
Signed-off-by: Barry Song <v-songbaohua@oppo.com>
Suggested-by: "Huang, Ying" <ying.huang@intel.com>
Reviewed-by: "Huang, Ying" <ying.huang@intel.com>
Acked-by: Chris Li <chrisl@kernel.org>
Reviewed-by: Ryan Roberts <ryan.roberts@arm.com>
Cc: "Rafael J. Wysocki" <rafael@kernel.org>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: Len Brown <len.brown@intel.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Andreas Larsson <andreas@gaisler.com>
Cc: Baolin Wang <baolin.wang@linux.alibaba.com>
Cc: Chuanhua Han <hanchuanhua@oppo.com>
Cc: David Hildenbrand <david@redhat.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Gao Xiang <xiang@kernel.org>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Kairui Song <kasong@tencent.com>
Cc: Khalid Aziz <khalid.aziz@oracle.com>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Yosry Ahmed <yosryahmed@google.com>
Cc: Yu Zhao <yuzhao@google.com>
Cc: Zi Yan <ziy@nvidia.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2024-07-03 19:30:01 -07:00
..
autosleep.c
console.c
energy_model.c PM: EM: Add em_dev_update_chip_binning() 2024-04-08 16:05:14 +02:00
hibernate.c PM: hibernate: replace deprecated strncpy() with strscpy() 2024-04-30 12:59:30 +02:00
Kconfig PM: hibernate: Add support for LZ4 compression for hibernation 2024-02-05 14:30:35 +01:00
main.c PM: sleep: stats: Use locking in dpm_save_failed_dev() 2024-02-05 14:28:54 +01:00
Makefile PM: sleep: Narrow down -DDEBUG on kernel/power/ files 2022-04-13 16:34:01 +02:00
power.h PM: hibernate: Don't ignore return from set_memory_ro() 2024-02-22 20:08:03 +01:00
poweroff.c tty: sysrq: switch sysrq handlers from int to u8 2023-07-25 19:21:03 +02:00
process.c cgroup/cpuset: Make cpuset hotplug processing synchronous 2024-04-08 07:39:16 -10:00
qos.c PM: QoS: Add check to make sure CPU latency is non-negative 2023-08-22 21:37:29 +02:00
snapshot.c PM: hibernate: Don't ignore return from set_memory_ro() 2024-02-22 20:08:03 +01:00
suspend_test.c rtc: class: make rtc_class constant 2024-03-08 12:05:10 +01:00
suspend.c PM: s2idle: Make sure CPUs will wakeup directly on resume 2024-04-08 15:36:54 +02:00
swap.c mm: remove the implementation of swap_free() and always use swap_free_nr() 2024-07-03 19:30:01 -07:00
user.c PM: hibernate: Don't ignore return from set_memory_ro() 2024-02-22 20:08:03 +01:00
wakelock.c PM: wakeup: simplify the output logic of pm_show_wakelocks() 2022-01-25 18:27:02 +01:00