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authorColin Cross <ccross@android.com>2012-05-09 16:09:50 -0700
committerArve Hjønnevåg <arve@android.com>2013-07-01 13:40:45 -0700
commit1bbda60cc146fa5c2ba1c0cadec140b51a229ffe (patch)
tree44a3d9cd0a70992ca9f54ba6be86eb456a683702 /kernel
parentc90ab94236d5450ebcd8afcd309d22af5eea2a3d (diff)
downloadolio-linux-3.10-1bbda60cc146fa5c2ba1c0cadec140b51a229ffe.tar.xz
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trace: power: add trace_clock_set_parent
Adds a new trace event to be called from clk_set_parent. Some cpufreq drivers, including Tegra, reparent the cpu clock to a slower clock while the main pll is relocking, tracing clk_set_parent allows traces to show how for long the cpu is running slower. Uses a separate TRACE_EVENT instead of the clock event class to allow the event to contain string names for the child and the parent. Signed-off-by: Colin Cross <ccross@android.com>
Diffstat (limited to 'kernel')
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