David Wang 69ec929028 proc/softirqs: replace seq_printf with seq_put_decimal_ull_width ...

[ Upstream commit 84b9749a3a ]

seq_printf is costy, on a system with n CPUs, reading /proc/softirqs
would yield 10*n decimal values, and the extra cost parsing format string
grows linearly with number of cpus. Replace seq_printf with
seq_put_decimal_ull_width have significant performance improvement.
On an 8CPUs system, reading /proc/softirqs show ~40% performance
gain with this patch.

Signed-off-by: David Wang <00107082@163.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

2024-12-05 10:59:29 +01:00

..

array.c

fs/proc/array.c: allow reporting eip/esp for all coredumping threads

2019-07-03 13:14:44 +02:00

base.c

procfs: block chmod on /proc/thread-self/comm

2023-09-23 10:48:11 +02:00

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: fix dentry/inode overinstantiating under /proc/${pid}/net

2022-06-14 16:59:25 +02:00

inode.c

proc: Use new_inode not new_inode_pseudo

2020-06-22 09:05:06 +02:00

internal.h

proc: fix lookup in /proc/net subdirectories after setns(2)

2021-01-12 20:10:17 +01:00

interrupts.c

proc: introduce proc_create_seq{,_data}

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

Kconfig

proc/kcore: add vmcoreinfo note to /proc/kcore

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

kcore.c

x86/gart: Exclude GART aperture from kcore

2019-04-20 09:15:59 +02:00

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

fs/proc/page.c: don't access uninitialized memmaps in fs/proc/page.c

2019-10-29 09:19:56 +01:00

proc_net.c

proc: fix dentry/inode overinstantiating under /proc/${pid}/net

2022-06-14 16:59:25 +02:00

proc_sysctl.c

sysctl: add a new register_sysctl_init() interface

2023-02-06 07:49:44 +01:00

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: don't allow async path resolution of /proc/self components

2020-12-02 08:48:09 +01:00

softirqs.c

proc/softirqs: replace seq_printf with seq_put_decimal_ull_width

2024-12-05 10:59:29 +01:00

stat.c

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

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

task_mmu.c

mm: hugetlb: proc: check for hugetlb shared PMD in /proc/PID/smaps

2023-02-22 12:47:15 +01:00

task_nommu.c

proc: use down_read_killable mmap_sem for /proc/pid/maps

2019-07-31 07:27:09 +02:00

thread_self.c

proc: Use new_inode not new_inode_pseudo

2020-06-22 09:05:06 +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: fix compile warning about variable 'vmcore_mmap_ops'

2024-11-17 14:58:07 +01:00