Signed-off-by: Aaron Lauterer <a.laute...@proxmox.com>
---
 src/PVE/ProcFSTools.pm | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/src/PVE/ProcFSTools.pm b/src/PVE/ProcFSTools.pm
index 382e6c5..185b2b3 100644
--- a/src/PVE/ProcFSTools.pm
+++ b/src/PVE/ProcFSTools.pm
@@ -344,6 +344,20 @@ sub read_meminfo {
     return $res;
 }
 
+# extract memory data from /proc/$pid/smaps_rollup for PID. $value is e.g. 
"Pss".
+sub read_smaps_rollup {
+    my ($pid, $value) = @_;
+
+    my $res = 0;
+    return $res if !$pid || !$value;
+
+    my $mem_stats = eval { 
PVE::Tools::file_get_contents("/proc/${pid}/smaps_rollup") };
+    if ($mem_stats && $mem_stats =~ m/^${value}:\s+(\d+)\s*kB$/m) {
+       $res = $1 * 1024;
+    }
+    return $res;
+}
+
 # memory usage of current process
 sub read_memory_usage {
 
-- 
2.39.5



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