2 <facility name=
"timer">
3 <description>The timer facility has events related to timer events in the kernel.
</description>
5 <type name=
"itimer_kind">
7 <label name=
"ITIMER_REAL" value=
"0"/> <description>decrements in real time,
8 and delivers SIGALRM upon expiration.
</description>
9 <label name=
"ITIMER_VIRTUAL" value=
"1"/> <description>decrements only when the
10 process is executing, and delivers SIGVTALRM upon expiration.
</description>
11 <label name=
"ITIMER_PROF" value=
"2"/> <description>decrements both when the
12 process executes and when the system is executing on behalf of the
13 process. Coupled with ITIMER_VIRTUAL, this timer is usually used to
14 profile the time spent by the application in user and kernel space.
15 SIGPROF is delivered upon expiration.
</description>
19 <event name=
"expired">
20 <description>A timer or itimer has expired.
</description>
22 <description>PID of the process to wake up.
</description>
27 <event name=
"softirq">
28 <description>The timer softirq is currently runned.
</description>
31 <event name=
"set_itimer">
32 <description>An interval timer is set.
</description>
33 <field name=
"which"> <description>kind of interval timer.
</description>
34 <typeref name=
"itimer_kind"/>
36 <field name=
"interval_seconds"><uint size=
"4"/></field>
37 <field name=
"interval_microseconds"><uint size=
"4"/></field>
38 <field name=
"value_seconds"><uint size=
"4"/></field>
39 <field name=
"value_microseconds"><uint size=
"4"/></field>