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[SCM] systemtap: system-wide probe/trace tool branch, master, updated. release-1.6-579-g5876002
- From: mark at sourceware dot org
- To: systemtap-cvs at sourceware dot org
- Date: 12 Dec 2011 15:09:55 -0000
- Subject: [SCM] systemtap: system-wide probe/trace tool branch, master, updated. release-1.6-579-g5876002
- Reply-to: systemtap at sourceware dot org
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the project "systemtap: system-wide probe/trace tool".
The branch, master has been updated
via 5876002191544908925353c6ea20a0335be7e703 (commit)
via 262f75989148e759f76f16044677182a218bf680 (commit)
via ab86339871ab6e281cbb3c62ea9b1d5f6a53e1f4 (commit)
from 64e807c2d576126a24ffb251fb4108f3940ece0b (commit)
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- Log -----------------------------------------------------------------
commit 5876002191544908925353c6ea20a0335be7e703
Merge: 262f759 64e807c
Author: Mark Wielaard <mjw@redhat.com>
Date: Mon Dec 12 15:59:28 2011 +0100
Merge branch 'master' of ssh://sourceware.org/git/systemtap
commit 262f75989148e759f76f16044677182a218bf680
Author: Mark Wielaard <mjw@redhat.com>
Date: Mon Dec 12 15:54:59 2011 +0100
Protect just the transport state with _stp_transport_mutex.
_stp_transport_mutex was held over the whole of _stp_handle_start()
and _stp_cleanup_and_exit(). This is unnecessary and dangerous since
some functions that get called could sleep. Add a new state variable
_stp_start_called and protect just that together with _stp_exit_called
to make sure _stp_handle_start() and _stp_cleanup_and_exit() are only
executed once.
commit ab86339871ab6e281cbb3c62ea9b1d5f6a53e1f4
Author: Mark Wielaard <mjw@redhat.com>
Date: Mon Dec 12 13:46:28 2011 +0100
uprobes.c add rcu_read_lock for pid_task(), rcu_dereference and utrace.
pid_task(), rcu_dereference() and the utrace functions that convert a
given pid to a task need to be protected by the rcu_read_lock().
-----------------------------------------------------------------------
Summary of changes:
runtime/transport/transport.c | 50 ++++++++++++++++++++++++++++++----------
runtime/uprobes2/uprobes.c | 42 ++++++++++++++++++++++++++++++++--
2 files changed, 76 insertions(+), 16 deletions(-)
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systemtap: system-wide probe/trace tool