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