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[SCM] systemtap: system-wide probe/trace tool branch, master, updated. release-1.4-249-g5e971c2
- From: fche at sourceware dot org
- To: systemtap-cvs at sourceware dot org
- Date: 19 Apr 2011 18:43:37 -0000
- Subject: [SCM] systemtap: system-wide probe/trace tool branch, master, updated. release-1.4-249-g5e971c2
- Reply-to: systemtap at sourceware dot org
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commit 5e971c2e3413b74589140026c68165e1835956c5
Author: Frank Ch. Eigler <fche@redhat.com>
Date: Tue Apr 19 14:40:05 2011 -0400
module shutdown: be verbose upon a hang
In the generated module_exit() function, there exists an infinite loop
that waits for all probe handlers that might still be struggling along
to shut down, before authorizing removal of the probe module. If
something is stuck though, it will stay stuck without any diagnostics
short of a hung stapio/staprun process that's sitting in the kernel.
This patch causes a message to be printk KERN_ERR'd, in case the
shutdown synchronization takes more than a second.
* translate.cxx (emit_module_exit): Print a message if holdon-spinning
for more than a second.
-----------------------------------------------------------------------
Summary of changes:
translate.cxx | 15 +++++++++++++--
1 files changed, 13 insertions(+), 2 deletions(-)
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systemtap: system-wide probe/trace tool