linux/fs/proc
Roman Gushchin 91711ef418 UPSTREAM: mm: vmalloc: show number of vmalloc pages in /proc/meminfo
Vmalloc() is getting more and more used these days (kernel stacks, bpf and
percpu allocator are new top users), and the total % of memory consumed by
vmalloc() can be pretty significant and changes dynamically.

/proc/meminfo is the best place to display this information: its top goal
is to show top consumers of the memory.

Since the VmallocUsed field in /proc/meminfo is not in use for quite a
long time (it has been defined to 0 by a5ad88ce8c ("mm: get rid of
'vmalloc_info' from /proc/meminfo")), let's reuse it for showing the
actual physical memory consumption of vmalloc().

Link: http://lkml.kernel.org/r/20190417194002.12369-3-guro@fb.com
Signed-off-by: Roman Gushchin <guro@fb.com>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Minchan Kim <minchan@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
(cherry picked from commit 97105f0ab7)
Signed-off-by: Minchan Kim <minchan@google.com>
Bug: 141257998
Test: "cat /proc/meminfo | grep VmallocUsed" doesn't show 0 any longer
Change-Id: Ibedcd5c1290ba7be3293e220a917434008a30996
2019-10-14 20:24:53 +00:00
..
array.c fs/proc/array.c: allow reporting eip/esp for all coredumping threads 2019-07-03 13:14:44 +02:00
base.c BACKPORT: signal: add pidfd_send_signal() syscall 2019-08-12 13:36:37 -04:00
cmdline.c
consoles.c
cpuinfo.c
devices.c
fd.c
fd.h
generic.c
inode.c
internal.h
interrupts.c
Kconfig
kcore.c
kmsg.c
loadavg.c
Makefile
meminfo.c UPSTREAM: mm: vmalloc: show number of vmalloc pages in /proc/meminfo 2019-10-14 20:24:53 +00:00
namespaces.c
nommu.c
page.c
proc_net.c
proc_sysctl.c fs/proc/proc_sysctl.c: fix the default values of i_uid/i_gid on /proc/sys inodes. 2019-07-26 09:14:24 +02:00
proc_tty.c
root.c
self.c
softirqs.c
stat.c
task_mmu.c This is the 4.19.63 stable release 2019-07-31 08:03:42 +02:00
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
uid.c
uptime.c
util.c
version.c
vmcore.c