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authorDominik Brodowski <linux@dominikbrodowski.net>2006-06-24 19:37:00 -0400
committerLen Brown <len.brown@intel.com>2006-06-28 03:14:31 -0400
commita3c6598f92cf27d3d201a2a5b052563148156837 (patch)
tree3fad66282da16a806139ce46bad2b85175fae43a /fs/fifo.c
parent95b38b3f453c16de0f8cddcde3e71050bbfb37b9 (diff)
ACPI: C-States: accounting of sleep states
Track the actual time spent in C-States (C2 upwards, we can't determine this for C1), not only the number of invocations. This is especially useful for dynamic ticks / "tickless systems", but is also of interest on normal systems, as any interrupt activity leads to C-States being exited, not only the timer interrupt. The time is being measured in PM timer ticks, so an increase by one equals 279 nanoseconds. Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Len Brown <len.brown@intel.com>
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