[PATCH 0/3] tracing/perf: perf_trace_buf/perf_xxx hacks.

From: Oleg Nesterov
Date: Tue Jun 18 2013 - 15:27:37 EST


On top of "PATCH 0/3] tracing: more list_empty(perf_events) checks"
series I sent yesterday.

Compile tested only, not for inclusion yet.

But I'll appreciate if you can take a look. I'll try to test this
tomorrow somehow and let you know. Right now I am looking at asm code,
looks correct...

I also compiled the kernel with the additional patch below, everything
compiles except sched/core.o as expected.


--- a/include/trace/ftrace.h
+++ b/include/trace/ftrace.h
@@ -664,6 +664,8 @@ perf_trace_##call(void *__data, proto) \
__data_size = ftrace_get_offsets_##call(&__data_offsets, args); \
+ BUILD_BUG_ON(!(__builtin_constant_p(!__task) && !__task)); \
+ \
head = this_cpu_ptr(event_call->perf_events); \
if (__builtin_constant_p(!__task) && !__task && \
hlist_empty(head)) \

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