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#! /usr/bin/env stap
global traced_pid, command
global allocation, free
global file_fault, file_cow, file_uunmap, file_kunmap
function log_event:long ()
{
return (!traced_pid || traced_pid == pid())
}
probe kernel.trace("mm_page_allocation") {
if (!log_event()) next
allocation[pid()] <<< 1
command[pid()] = execname()
}
probe kernel.trace("mm_page_free") {
if (!log_event()) next
free[pid()] <<< 1
}
probe kernel.trace("mm_filemap_fault") {
if (!log_event()) next
file_fault[pid()] <<< 1
}
probe kernel.trace("mm_filemap_cow") {
if (!log_event()) next
file_cow[pid()] <<< 1
}
probe kernel.trace("mm_filemap_unmap") {
if (!log_event()) next
file_kunmap[pid()] <<< 1
}
probe kernel.trace("mm_filemap_userunmap") {
if (!log_event()) next
file_uunmap[pid()] <<< 1
}
probe begin {
printf("Starting data collection\n")
traced_pid = target()
if (traced_pid)
printf("mode Specific Pid, traced pid: %d\n\n", traced_pid)
else
printf("mode - All Pids\n\n")
}
probe end {
printf("Terminating data collection\n")
printf("%-16s %6s %9s %9s %8s %8s %8s %8s\n",
"Command", "Pid", "Alloc", "Free", "F_fault",
"F_cow", "F_kunmap", "F_uunmap")
printf("%-16s %6s %9s %9s %8s %8s %8s %8s\n",
"-------", "---", "-----", "----", "-------",
"-----", "--------", "--------")
foreach (pid in allocation-)
printf("%-16s %6d %9d %9d %8d %8d %8d %8d\n",
command[pid], pid,
@count(allocation[pid]), @count(free[pid]),
@count(file_fault[pid]), @count(file_cow[pid]),
@count(file_kunmap[pid]), @count(file_uunmap[pid]))
}
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