linux

iv/linux

History

Srivatsa S. Bhat 443772d408 ftrace: Disable function tracing during suspend/resume and hibernation, again

If function tracing is enabled for some of the low-level suspend/resume
functions, it leads to triple fault during resume from suspend, ultimately
ending up in a reboot instead of a resume (or a total refusal to come out
of suspended state, on some machines).

This issue was explained in more detail in commit f42ac38c59e0a03d (ftrace:
disable tracing for suspend to ram). However, the changes made by that commit
got reverted by commit cbe2f5a6e84eebb (tracing: allow tracing of
suspend/resume & hibernation code again). So, unfortunately since things are
not yet robust enough to allow tracing of low-level suspend/resume functions,
suspend/resume is still broken when ftrace is enabled.

So fix this by disabling function tracing during suspend/resume & hibernation.

Signed-off-by: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com>
Cc: stable@vger.kernel.org
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>

2012-07-01 13:31:22 +02:00

autosleep.c

PM / Sleep: Add "prevent autosleep time" statistics to wakeup sources

2012-05-01 21:25:49 +02:00

block_io.c

block: kill off REQ_UNPLUG

2011-03-10 08:52:27 +01:00

console.c

PM / VT: Cleanup #if defined uglyness and fix compile error

2011-10-16 23:28:51 +02:00

hibernate.c

ftrace: Disable function tracing during suspend/resume and hibernation, again