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markers: auto enable tracepoints (new API : trace_mark_tp())

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Impact: new API

Add a new API trace_mark_tp(), which declares a marker within a
tracepoint probe. When the marker is activated, the tracepoint is
automatically enabled.

No branch test is used at the marker site, because it would be a
duplicate of the branch already present in the tracepoint.

Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Mathieu Desnoyers
2008-11-14 17:47:39 -05:00
committed by Ingo Molnar
parent a419246ac7
commit c1df1bd2c4
3 changed files with 96 additions and 3 deletions
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1
init/Kconfig
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@@ -808,6 +808,7 @@ config TRACEPOINTS
config MARKERS
bool "Activate markers"
depends on TRACEPOINTS
help
Place an empty function call at each marker site. Can be
dynamically changed for a probe function.