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linux-next/fs/proc
Alexey Dobriyan 4f1134370a proc: use slower rb_first()
In a typical for /proc "open+read+close" usecase, dentry is looked up
successfully on open only to be killed in dput() on close.  In fact
dentries which aren't /proc/*/...  and /proc/sys/* were almost NEVER
CACHED.  Simple printk in proc_lookup_de() shows that.

Now that ->delete hook intelligently picks which dentries should live in
dcache and which should not, rbtree caching is not necessary as dcache
does it job, at last!

As a side effect, struct proc_dir_entry shrinks by one pointer which can
go into inline name.

Link: http://lkml.kernel.org/r/20180314231032.GA15854@avx2
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Acked-by: Davidlohr Bueso <dbueso@suse.de>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-04-11 10:28:34 -07:00
..
array.c proc: replace seq_printf by seq_put_smth to speed up /proc/pid/status 2018-04-11 10:28:33 -07:00
base.c proc: do mmput ASAP for /proc/*/map_files 2018-04-11 10:28:34 -07:00
cmdline.c proc: faster /proc/cmdline 2018-04-11 10:28:34 -07:00
consoles.c fs/proc/consoles.c: use seq_putc() in show_console_dev() 2018-02-06 18:32:44 -08:00
cpuinfo.c x86 / CPU: Always show current CPU frequency in /proc/cpuinfo 2017-11-15 19:46:50 +01:00
devices.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
fd.c proc: use %u for pid printing and slightly less stack 2018-02-06 18:32:43 -08:00
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: use slower rb_first() 2018-04-11 10:28:34 -07:00
inode.c proc: move "struct proc_dir_entry" into kmem cache 2018-04-11 10:28:34 -07:00
internal.h proc: use slower rb_first() 2018-04-11 10:28:34 -07:00
interrupts.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
Kconfig fs, proc: add help for CONFIG_PROC_CHILDREN 2015-07-17 16:39:52 -07:00
kcore.c vfs/proc/kcore, x86/mm/kcore: Fix SMAP fault when dumping vsyscall user page 2018-02-13 09:15:58 +01:00
kmsg.c vfs: do bulk POLL* -> EPOLL* replacement 2018-02-11 14:34:03 -08:00
loadavg.c pid: replace pid bitmap implementation with IDR API 2017-11-17 16:10:03 -08:00
Makefile proc: : uninline name_to_int() 2017-11-17 16:10:00 -08:00
meminfo.c proc: add seq_put_decimal_ull_width to speed up /proc/pid/smaps 2018-04-11 10:28:33 -07:00
namespaces.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
nommu.c Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
page.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
proc_net.c proc: use slower rb_first() 2018-04-11 10:28:34 -07:00
proc_sysctl.c fs/proc/proc_sysctl.c: remove redundant link check in proc_sys_link_fill_cache() 2018-04-11 10:28:33 -07:00
proc_tty.c TTY/Serial patches for 4.15-rc1 2017-11-13 21:05:31 -08:00
root.c proc: use slower rb_first() 2018-04-11 10:28:34 -07:00
self.c fs/proc: use __ro_after_init 2018-02-06 18:32:43 -08:00
softirqs.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
stat.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
task_mmu.c proc: replace seq_printf on seq_putc to speed up /proc/pid/smaps 2018-04-11 10:28:33 -07:00
task_nommu.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
thread_self.c fs/proc: use __ro_after_init 2018-02-06 18:32:43 -08:00
uptime.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
util.c proc: use do-while in name_to_int() 2017-11-17 16:10:00 -08:00
version.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
vmcore.c fs/proc/vmcore.c: simpler /proc/vmcore cleanup 2018-02-06 18:32:43 -08:00