Dtrace does not like your suggestion:
dell690pr# dtrace -Fn '\
fbt:mega_sas::entry{}\
fbt:mega_sas::entry/count++ >= 60/{exit(0);}\
'
dtrace: invalid probe specifier
fbt:mega_sas::entry{}
fbt:mega_sas::entry/count++ >= 60/{exit(0);}
: in predicate: aggregating function 'count' may not be referenced as scalar
dell690pr#
but if you want to see some dtrace fbt probes that are not in attach, if
I run this command and then type "format" in a different window:
dell690pr# dtrace -n fbt:mega_sas::entry'{ @[probefunc]=count(); }'
dtrace: description 'fbt:mega_sas::entry' matched 78 probes
^C
megasas_tran_setcap 12
megasas_dma_alloc 25
megasas_tran_destroy_pkt 29
megasas_tran_init_pkt 29
build_cmd 30
get_mfi_pkt 30
intr_ack_ppc 30
issue_cmd_ppc 30
megasas_isr 30
megasas_softintr 30
megasas_tran_start 30
mlist_add 30
mlist_add_tail 30
mlist_splice 30
return_mfi_pkt 30
megasas_tran_getcap 35
__list_add 60
__list_del 60
mlist_del_init 60
mlist_empty 60
megasas_tran_tgt_init 150
dell690pr#
-Susan
Jonathan Adams wrote:
> On Tue, Sep 02, 2008 at 04:31:18PM -0700, Susan Scheufele wrote:
>> Hi Jonathan,
>>
>> I am running snapshot 96. The boot drive is using the mpt driver.
>> And the same thing happens -- no output, although the driver has been
>> modloaded via running the dtrace command (and I did wait a bit before
>> typing <ctrl><c>).
>>
>> dell690pr# modinfo | grep mpt
>> 46 fffffffff7883000 3c768 169 1 mpt (MPT HBA Driver v1.144)
>> dell690pr# modinfo | grep mega
>> dell690pr# dtrace -n fbt:mega_sas:megasas_attach:entry'{
>> @[probefunc]=count(); }'
>> dtrace: description 'fbt:mega_sas:megasas_attach:entry' matched 1 probe
>> ^C
>>
>> dell690pr# modinfo | grep mega
>> 241 fffffffff8379000 7c10 211 1 mega_sas (LSIv1.26)
>> dell690pr#
>
> Hrm; what about:
>
> # dtrace -Fn '
> fbt:mega_sas::entry{}
> fbt:mega_sas::entry/count++ >= 60/{exit(0);}
> '
>
> Cheers,
> - jonathan
>
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