path: root/arch/arm/common/bL_switcher_dummy_if.c
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authorDave Martin <dave.martin@linaro.org>2013-02-06 15:45:23 +0000
committerNicolas Pitre <nicolas.pitre@linaro.org>2013-05-13 19:03:41 -0400
commit56e453ef248c69627f35c7c901838398a4f8bdd4 (patch)
treee9cce06e8daba687b8b3be96f4b76269f057756e /arch/arm/common/bL_switcher_dummy_if.c
parentcc943eda78d22a16b852c69ecb370f45d5d34999 (diff)
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 'arch/arm/common/bL_switcher_dummy_if.c')
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