]> pilppa.com Git - linux-2.6-omap-h63xx.git/commit
lockdep: fix irqs on/off ip tracing
authorHeiko Carstens <heiko.carstens@de.ibm.com>
Tue, 28 Oct 2008 10:14:58 +0000 (11:14 +0100)
committerIngo Molnar <mingo@elte.hu>
Tue, 28 Oct 2008 10:19:07 +0000 (11:19 +0100)
commit6afe40b4dace385d7ba2faf24b352f066f3b71bf
tree017e672e83a1257b084036c2e79adef95a81b9c3
parent46fec7ac40e452a2ea5e63648d98b6bb2b5898f9
lockdep: fix irqs on/off ip tracing

Impact: fix lockdep lock-api-caller output when irqsoff tracing is enabled

81d68a96 "ftrace: trace irq disabled critical timings" added wrappers around
trace_hardirqs_on/off_caller. However these functions use
__builtin_return_address(0) to figure out which function actually disabled
or enabled irqs. The result is that we save the ips of trace_hardirqs_on/off
instead of the real caller. Not very helpful.

However since the patch from Steven the ip already gets passed. So use that
and get rid of __builtin_return_address(0) in these two functions.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
kernel/lockdep.c