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authorDave Martin <dave.martin@linaro.org>2013-02-06 15:45:23 +0000
committerNicolas Pitre <nicolas.pitre@linaro.org>2013-06-20 00:45:29 -0400
commitb87db1b9e394f0d6c25bb9a4d2c85144fc571b5d (patch)
tree249aa384b8045b9d911d8399ce640172d2fe2616 /include/trace/events/power_cpu_migrate.h
parentd4d434a82421008a452acd022cd6730feb20851b (diff)
downloadvexpress-lsk-b87db1b9e394f0d6c25bb9a4d2c85144fc571b5d.tar.gz
ARM: bL_switcher/trace: Add trace trigger for trace bootstrapping
When tracing switching, an external tracer needs a way to bootstrap its knowledge of the logical<->physical CPU mapping. This patch adds a sysfs attribute trace_trigger. A write to this attribute will generate a power:cpu_migrate_current event for each online CPU, indicating the current physical CPU for each logical CPU. Activating or deactivating the switcher also generates these events, so that the tracer knows about the resulting remapping of affected CPUs. Signed-off-by: Dave Martin <dave.martin@linaro.org>
Diffstat (limited to 'include/trace/events/power_cpu_migrate.h')
-rw-r--r--include/trace/events/power_cpu_migrate.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/trace/events/power_cpu_migrate.h b/include/trace/events/power_cpu_migrate.h
index 3694af0f5bc..f76dd4de625 100644
--- a/include/trace/events/power_cpu_migrate.h
+++ b/include/trace/events/power_cpu_migrate.h
@@ -42,6 +42,7 @@ DECLARE_EVENT_CLASS(cpu_migrate,
__define_cpu_migrate_event(begin);
__define_cpu_migrate_event(finish);
+__define_cpu_migrate_event(current);
#undef __define_cpu_migrate
#undef __cpu_migrate_proto