The following example shows an anonymous DTrace enabling for every probe in the iprb module:
# dtrace -A -m iprb dtrace: saved anonymous enabling in /kernel/drv/dtrace.conf dtrace: added forceload directives to /etc/system dtrace: run update_drv(1M) or reboot to enable changes # reboot
After rebooting, dtrace prints a message on the console to indicate that it is enabling the specified probes:
... Copyright 1983-2003 Sun Microsystems, Inc. All rights reserved. Use is subject to license terms. NOTICE: enabling probe 0 (:iprb::) NOTICE: enabling probe 1 (dtrace:::ERROR) configuring IPv4 interfaces: iprb0. ...
When the system has rebooted, the anonymous state may be consumed by specifying the –a option with dtrace:
# dtrace -a
CPU ID FUNCTION:NAME
0 22954 _init:entry
0 22955 _init:return
0 22800 iprbprobe:entry
0 22934 iprb_get_dev_type:entry
0 22935 iprb_get_dev_type:return
0 22801 iprbprobe:return
0 22802 iprbattach:entry
0 22874 iprb_getprop:entry
0 22875 iprb_getprop:return
0 22934 iprb_get_dev_type:entry
0 22935 iprb_get_dev_type:return
0 22870 iprb_self_test:entry
0 22871 iprb_self_test:return
0 22958 iprb_hard_reset:entry
0 22959 iprb_hard_reset:return
0 22862 iprb_get_eeprom_size:entry
0 22826 iprb_shiftout:entry
0 22828 iprb_raiseclock:entry
0 22829 iprb_raiseclock:return
...
Example 32 Enabling Anonymous Tracing for Functions Called From iprbattach
The following example focuses only on those functions called from iprbattach. In an editor, type the following script and save it in a file named iprb.d.
fbt::iprbattach:entry
{
self->trace = 1;
}
fbt:::
/self->trace/
{}
fbt::iprbattach:return
{
self->trace = 0;
}
Run the following commands to clear the previous settings from the driver configuration file, install the new anonymous tracing request, and reboot:
# dtrace -AFs iprb.d dtrace: cleaned up old anonymous enabling in /kernel/drv/dtrace.conf dtrace: cleaned up forceload directives in /etc/system dtrace: saved anonymous enabling in /kernel/drv/dtrace.conf dtrace: added forceload directives to /etc/system dtrace: run update_drv(1M) or reboot to enable changes # reboot
After rebooting, dtrace prints a different message on the console to indicate the slightly different enabling:
... Copyright 1983-2003 Sun Microsystems, Inc. All rights reserved. Use is subject to license terms. NOTICE: enabling probe 0 (fbt::iprbattach:entry) NOTICE: enabling probe 1 (fbt:::) NOTICE: enabling probe 2 (fbt::iprbattach:return) NOTICE: enabling probe 3 (dtrace:::ERROR) configuring IPv4 interfaces: iprb0. ...
After the system has completely booted, run the dtrace with the -a option and the -e option to consume the anonymous data and then exit.
# dtrace -ae
CPU FUNCTION
0 -> iprbattach
0 -> gld_mac_alloc
0 -> kmem_zalloc
0 -> kmem_cache_alloc
0 -> kmem_cache_alloc_debug
0 -> verify_and_copy_pattern
0 <- verify_and_copy_pattern
0 -> tsc_gethrtime
0 <- tsc_gethrtime
0 -> getpcstack
0 <- getpcstack
0 -> kmem_log_enter
0 <- kmem_log_enter
0 <- kmem_cache_alloc_debug
0 <- kmem_cache_alloc
0 <- kmem_zalloc
0 <- gld_mac_alloc
0 -> kmem_zalloc
0 -> kmem_alloc
0 -> vmem_alloc
0 -> highbit
0 <- highbit
0 -> lowbit
0 <- lowbit
0 -> vmem_xalloc
0 -> highbit
0 <- highbit
0 -> lowbit
0 <- lowbit
0 -> segkmem_alloc
0 -> segkmem_xalloc
0 -> vmem_alloc
0 -> highbit
0 <- highbit
0 -> lowbit
0 <- lowbit
0 -> vmem_seg_alloc
0 -> highbit
0 <- highbit
0 -> highbit
0 <- highbit
0 -> vmem_seg_create
...