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| author |   Steven Rostedt <rostedt@goodmis.org> | 2010-12-22 16:42:56 +0000 |
|---|---|---|
| committer |   Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2011-01-21 14:08:33 +1100 |
| commit | 06ca2188eccbd7932636ac5bde2837297800480e (patch) | |
| tree | 6eecdd819e8a96f04eda7fab9d85b04af9bdb06d /tools/perf/util/scripting-engines/trace-event-python.c | |
| parent | powerpc/ppc64/tracing: Add stack frame to calls of trace_hardirqs_on/off (diff) | |
| download | wireguard-linux-06ca2188eccbd7932636ac5bde2837297800480e.tar.xz wireguard-linux-06ca2188eccbd7932636ac5bde2837297800480e.zip | |
powerpc/ppc32/tracing: Add stack frame to calls of trace_hardirqs_on/off
32-bit variant of the previous patch for 64-bit:
<<
When an interrupt occurs in userspace, we can call trace_hardirqs_on/off()
With one level stack. But if we have irqsoff tracing enabled,
it checks both CALLER_ADDR0 and CALLER_ADDR1. The second call
goes two stack frames up. If this is from user space, then there may
not exist a second stack....
>>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'tools/perf/util/scripting-engines/trace-event-python.c')
0 files changed, 0 insertions, 0 deletions