From b09bbe5b1267b6af22a9584d614f5eec5d74f405 Mon Sep 17 00:00:00 2001 From: Dave Martin Date: Wed, 6 Feb 2013 15:45:23 +0000 Subject: 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 --- include/trace/events/power_cpu_migrate.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/trace/events/power_cpu_migrate.h') diff --git a/include/trace/events/power_cpu_migrate.h b/include/trace/events/power_cpu_migrate.h index 3694af0f5bc5..f76dd4de625e 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 -- cgit v1.2.3