From d2b3db032e34938c970b148e71cc401fc4c541e8 Mon Sep 17 00:00:00 2001 From: Robin Randhawa Date: Mon, 29 Jun 2015 18:01:58 +0100 Subject: sched: Support for extracting EAS energy costs from DT This patch implements support for extracting energy cost data from DT. The data should conform to the DT bindings for energy cost data needed by EAS (energy aware scheduling). Signed-off-by: Robin Randhawa --- include/linux/sched_energy.h | 36 ++++++++++++++++++++++++++++++++++++ 1 file changed, 36 insertions(+) create mode 100644 include/linux/sched_energy.h (limited to 'include/linux') diff --git a/include/linux/sched_energy.h b/include/linux/sched_energy.h new file mode 100644 index 000000000000..a3f1627ac609 --- /dev/null +++ b/include/linux/sched_energy.h @@ -0,0 +1,36 @@ +#ifndef _LINUX_SCHED_ENERGY_H +#define _LINUX_SCHED_ENERGY_H + +#include +#include + +/* + * There doesn't seem to be an NR_CPUS style max number of sched domain + * levels so here's an arbitrary constant one for the moment. + * + * The levels alluded to here correspond to entries in struct + * sched_domain_topology_level that are meant to be populated by arch + * specific code (topology.c). + */ +#define NR_SD_LEVELS 8 + +#define SD_LEVEL0 0 +#define SD_LEVEL1 1 +#define SD_LEVEL2 2 +#define SD_LEVEL3 3 +#define SD_LEVEL4 4 +#define SD_LEVEL5 5 +#define SD_LEVEL6 6 +#define SD_LEVEL7 7 + +/* + * Convenience macro for iterating through said sd levels. + */ +#define for_each_possible_sd_level(level) \ + for (level = 0; level < NR_SD_LEVELS; level++) + +extern struct sched_group_energy *sge_array[NR_CPUS][NR_SD_LEVELS]; + +void init_sched_energy_costs(void); + +#endif -- cgit v1.2.3