From mboxrd@z Thu Jan  1 00:00:00 1970
To: 9fans@cse.psu.edu
From: andrey mirtchovski <andrey@lanl.gov>
MIME-Version: 1.0
Content-Type: text/plain; charset="US-ASCII"
Content-Transfer-Encoding: 7bit
Message-Id: <20020421162852.D7ECA19988@mail.cse.psu.edu>
Subject: [9fans] kprof
Date: Sun, 21 Apr 2002 10:30:30 -0600
Topicbox-Message-UUID: 79294cb6-eaca-11e9-9e20-41e7f4b1d025

i'm trying to modify kprof to provide a syscall tree the same way
'prof -d' does, but i can't figure out how to handle the data
accumulated in devkprof.c's _kproftimer().

i understand the current way it works -- storing the total time the
kernel has spent in a certain function, but what i can't figure out is
how to store the actual PC values for the entire timespan between a
start and a stop command.

one way is to create a (presumably large!)  array and incrementally
store the current PC value at each call to _kproftimer(), but is that
a decent solution?  am i right in assuming (based on observations :)
that no syscall can be executed in _kproftimer()?

andrey