From: Li Guanglei <guanglei@cn.ibm.com>
To: "systemtap@sources.redhat.com" <systemtap@sources.redhat.com>
Subject: adding statements in alias definition as epilogue
Date: Mon, 03 Apr 2006 09:25:00 -0000 [thread overview]
Message-ID: <4430EA16.8020702@cn.ibm.com> (raw)
Currently the statement block that follows an alias definition is
implicitly added as a prologue to any probe that refers to the alias.
But it seems to me that only allowing adding those statements
contained in an alias definition as a prologue makes me to lose some
controls over them.
For example, I have a tapsets:
probe addevent.tskdispatch.cpuidle
= kernel.inline("idle_balance")
{
log_cpuidle_tracedata(HOOKID_TASK_CPUIDLE, backtrace)
}
What I want is to let user specify whether to log backtrace in his
scripts, like the following:
stap -e "probe addevent.tskdispatch.cpuidle { backtrace=1 } -I
LKET_TAPSETS
But unfortunately, it won't work because "backtrace=1" is added after
"log_cpuidle_tracedata(HOOKID_TASK_CPUIDLE, backtrace)". So how about
providing a way to specify whether the statements in a alias
definition could be added as prologue or epilogue to any probe that
refers to that alias?
next reply other threads:[~2006-04-03 9:25 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-04-03 9:25 Li Guanglei [this message]
2006-04-03 9:59 ` bibo,mao
2006-04-03 16:00 ` Frank Ch. Eigler
2006-04-05 0:41 Guang Lei Li
2006-04-05 1:24 ` Frank Ch. Eigler
2006-04-05 2:46 ` Guang Lei Li
2006-04-05 12:03 ` Frank Ch. Eigler
2006-04-05 16:06 ` Guang Lei Li
2006-04-05 20:16 ` Frank Ch. Eigler
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