On 04/16/13 15:54, Mark Johnston wrote:
On Tue, Apr 16, 2013 at 12:57:08PM -0700, Navdeep Parhar wrote:
I just upgraded my kernel and userspace to head (r249552) and I notice
that DTrace doesn't output anything until I hit ctrl-c. All previous
"hits" on the probe appear lost. For example:
# dtrace -n 'fbt::ether_output:entry'
dtrace: description 'fbt::ether_output:entry' matched 1 probe
(No output here. I waited a long time before the ctrl-c and I know the
system is actively transmitting and receiving Ethernet traffic).
^C
CPU ID FUNCTION:NAME
9 29354 ether_output:entry
8 29354 ether_output:entry
8 29354 ether_output:entry
8 29354 ether_output:entry
Can anyone confirm or contradict this on a recent HEAD (around r249552
in my case)?
Reverting r249367 and rebuilding libdtrace+the kernel fixes the problem
for me.
-Mark
Thanks for pointing culprit !
Unfortunately upstream merged many changes in the same commit
so it's difficult to separate the specific change that is causing this.
I reverted all the change in r249573.
Regards,
Pedro.
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