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library: exploit linux-4.5 resident memory enhancement

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Beginning with linux-4.5, the following new fields are
being added under that /proc/<pid>/status pseudo file:
 . RssAnon - size of resident anonymous memory
 . RssFile - size of resident file mappings
 . RssShmem - size of resident shared memory

This patch just represents the initial library and top
support, sharing a commit message with 2 more patches.

p.s. locked resident memory support was also added but
isn't directly related to the kernel 4.5 enhancements.

Reference(s):
commit 1f8e41d019
Signed-off-by: Jim Warner <james.warner@comcast.net>
This commit is contained in:
Jim Warner
2016-04-13 00:00:00 -05:00
committed by Craig Small
parent b921e2e765
commit 8dc378f6a8
4 changed files with 95 additions and 69 deletions
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3
proc/readproc.h
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@ -117,6 +117,9 @@ typedef struct proc_t {
vm_size, // status equals 'size' (as kb)
vm_lock, // status locked pages (as kb)
vm_rss, // status equals 'rss' and/or 'resident' (as kb)
vm_rss_anon, // status the 'anonymous' portion of vm_rss (as kb)
vm_rss_file, // status the 'file-backed' portion of vm_rss (as kb)
vm_rss_shared, // status the 'shared' portion of vm_rss (as kb)
vm_data, // status data only size (as kb)
vm_stack, // status stack only size (as kb)
vm_swap, // status based on linux-2.6.34 "swap ents" (as kb)