Omar Sandoval bf991c2231 proc/kcore: optimize multiple page reads ...

The current code does a full search of the segment list every time for
every page.  This is wasteful, since it's almost certain that the next
page will be in the same segment.  Instead, check if the previous segment
covers the current page before doing the list search.

Link: http://lkml.kernel.org/r/fd346c11090cf93d867e01b8d73a6567c5ac6361.1531953780.git.osandov@fb.com
Signed-off-by: Omar Sandoval <osandov@fb.com>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Cc: Bhupesh Sharma <bhsharma@redhat.com>
Cc: Eric Biederman <ebiederm@xmission.com>
Cc: James Morse <james.morse@arm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

2018-08-22 10:52:46 -07:00

..

array.c

proc: use "unsigned int" for sigqueue length

2018-06-07 17:34:38 -07:00

base.c

proc: use macro in /proc/latency hook

2018-08-22 10:52:46 -07:00

cmdline.c

proc: introduce proc_create_single{,_data}

2018-05-16 07:23:35 +02:00

consoles.c

proc: introduce proc_create_seq{,_data}

2018-05-16 07:23:35 +02:00

cpuinfo.c

x86 / CPU: Always show current CPU frequency in /proc/cpuinfo

2017-11-15 19:46:50 +01:00

devices.c

proc: introduce proc_create_seq{,_data}

2018-05-16 07:23:35 +02:00

fd.c

proc: use "unsigned int" in proc_fill_cache()

2018-06-07 17:34:38 -07:00

fd.h

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

generic.c

proc: smaller readlock section in readdir("/proc")

2018-08-22 10:52:45 -07:00

inode.c

proc: fixup PDE allocation bloat

2018-08-22 10:52:45 -07:00

internal.h

proc: spread "const" a bit

2018-08-22 10:52:46 -07:00

interrupts.c

proc: introduce proc_create_seq{,_data}

2018-05-16 07:23:35 +02:00

Kconfig

vmcore: add API to collect hardware dump in second kernel

2018-05-14 13:46:04 -04:00

kcore.c

proc/kcore: optimize multiple page reads

2018-08-22 10:52:46 -07:00

kmsg.c

vfs: do bulk POLL* -> EPOLL* replacement

2018-02-11 14:34:03 -08:00

loadavg.c

proc: introduce proc_create_single{,_data}

2018-05-16 07:23:35 +02:00

Makefile

proc: : uninline name_to_int()

2017-11-17 16:10:00 -08:00

meminfo.c

/proc/meminfo: add percpu populated pages count

2018-08-22 10:52:45 -07:00

namespaces.c

procfs: switch instantiate_t to d_splice_alias()

2018-05-26 14:20:50 -04:00

nommu.c

proc: introduce proc_create_seq{,_data}

2018-05-16 07:23:35 +02:00

page.c

mm: mark pages in use for page tables

2018-06-07 17:34:37 -07:00

proc_net.c

proc: Add a way to make network proc files writable

2018-05-18 11:46:15 +01:00

proc_sysctl.c

treewide: kzalloc() -> kcalloc()

2018-06-12 16:19:22 -07:00

proc_tty.c

tty: replace ->proc_fops with ->proc_show

2018-05-16 07:24:30 +02:00

root.c

proc: Make inline name size calculation automatic

2018-06-15 00:48:57 -04:00

self.c

proc: introduce a proc_pid_ns helper

2018-05-16 07:23:35 +02:00

softirqs.c

proc: introduce proc_create_single{,_data}

2018-05-16 07:23:35 +02:00

stat.c

proc: use "unsigned int" in /proc/stat hook

2018-08-22 10:52:46 -07:00

task_mmu.c

mm: /proc/pid/smaps_rollup: convert to single value seq_file

2018-08-22 10:52:44 -07:00

task_nommu.c

mm: /proc/pid/*maps remove is_pid and related wrappers

2018-08-22 10:52:44 -07:00

thread_self.c

proc: introduce a proc_pid_ns helper

2018-05-16 07:23:35 +02:00

uptime.c

fs/proc/uptime.c: use ktime_get_boottime_ts64

2018-08-22 10:52:45 -07:00

util.c

proc: use do-while in name_to_int()

2017-11-17 16:10:00 -08:00

version.c

proc: introduce proc_create_single{,_data}

2018-05-16 07:23:35 +02:00

vmcore.c

fs/proc/vmcore.c: use new typedef vm_fault_t

2018-08-22 10:52:46 -07:00