tracepoints: add DECLARE_TRACE() and DEFINE_TRACE()
authorMathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
Fri, 14 Nov 2008 22:47:47 +0000 (17:47 -0500)
committerIngo Molnar <mingo@elte.hu>
Sun, 16 Nov 2008 08:01:36 +0000 (09:01 +0100)
commit7e066fb870fcd1025ec3ba7bbde5d541094f4ce1
tree52acda06de25c029b9834110d7bf6b4abc50353b
parent32f85742778dfc2c74975cf0b9f5bdb13470cb32
tracepoints: add DECLARE_TRACE() and DEFINE_TRACE()

Impact: API *CHANGE*. Must update all tracepoint users.

Add DEFINE_TRACE() to tracepoints to let them declare the tracepoint
structure in a single spot for all the kernel. It helps reducing memory
consumption, especially when declaring a lot of tracepoints, e.g. for
kmalloc tracing.

*API CHANGE WARNING*: now, DECLARE_TRACE() must be used in headers for
tracepoint declarations rather than DEFINE_TRACE(). This is the sane way
to do it. The name previously used was misleading.

Updates scheduler instrumentation to follow this API change.

Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Documentation/tracepoints.txt
include/asm-generic/vmlinux.lds.h
include/linux/tracepoint.h
include/trace/sched.h
kernel/exit.c
kernel/fork.c
kernel/kthread.c
kernel/sched.c
kernel/signal.c
samples/tracepoints/tp-samples-trace.h
samples/tracepoints/tracepoint-sample.c