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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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8
proc/pids.c
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@ -242,6 +242,10 @@ REG_set(VM_EXE, ul_int, vm_exe)
REG_set(VM_LIB, ul_int, vm_lib)
REG_set(VM_LOCK, ul_int, vm_lock)
REG_set(VM_RSS, ul_int, vm_rss)
REG_set(VM_RSS_ANON, ul_int, vm_rss_anon)
REG_set(VM_RSS_FILE, ul_int, vm_rss_file)
REG_set(VM_RSS_LOCKED, ul_int, vm_lock)
REG_set(VM_RSS_SHARED, ul_int, vm_rss_shared)
REG_set(VM_SIZE, ul_int, vm_size)
REG_set(VM_STACK, ul_int, vm_stack)
REG_set(VM_SWAP, ul_int, vm_swap)
@ -493,6 +497,10 @@ static struct {
{ RS(VM_LIB), f_status, NULL, QS(ul_int), 0, -1 },
{ RS(VM_LOCK), f_status, NULL, QS(ul_int), 0, -1 },
{ RS(VM_RSS), f_status, NULL, QS(ul_int), 0, -1 },
{ RS(VM_RSS_ANON), f_status, NULL, QS(ul_int), 0, -1 },
{ RS(VM_RSS_FILE), f_status, NULL, QS(ul_int), 0, -1 },
{ RS(VM_RSS_LOCKED), f_status, NULL, QS(ul_int), 0, -1 },
{ RS(VM_RSS_SHARED), f_status, NULL, QS(ul_int), 0, -1 },
{ RS(VM_SIZE), f_status, NULL, QS(ul_int), 0, -1 },
{ RS(VM_STACK), f_status, NULL, QS(ul_int), 0, -1 },
{ RS(VM_SWAP), f_status, NULL, QS(ul_int), 0, -1 },