kernel/linux.git/include/linux/sched/sysctl.h, branch v6.19.11

sched: Move numa_balancing sysctls to its own file

2022-11-21T04:55:26+00:00

The sysctl_numa_balancing_promote_rate_limit and sysctl_numa_balancing are part of sched, move them to its own file. Signed-off-by: Kefeng Wang Signed-off-by: Luis Chamberlain

memory tiering: rate limit NUMA migration throughput

2022-09-12T03:25:54+00:00

In NUMA balancing memory tiering mode, if there are hot pages in slow memory node and cold pages in fast memory node, we need to promote/demote hot/cold pages between the fast and cold memory nodes. A choice is to promote/demote as fast as possible. But the CPU cycles and memory bandwidth consumed by the high promoting/demoting throughput will hurt the latency of some workload because of accessing inflating and slow memory bandwidth contention. A way to resolve this issue is to restrict the max promoting/demoting throughput. It will take longer to finish the promoting/demoting. But the workload latency will be better. This is implemented in this patch as the page promotion rate limit mechanism. The number of the candidate pages to be promoted to the fast memory node via NUMA balancing is counted, if the count exceeds the limit specified by the users, the NUMA balancing promotion will be stopped until the next second. A new sysctl knob kernel.numa_balancing_promote_rate_limit_MBps is added for the users to specify the limit. Link: https://lkml.kernel.org/r/20220713083954.34196-3-ying.huang@intel.com Signed-off-by: "Huang, Ying" Reviewed-by: Baolin Wang Tested-by: Baolin Wang Cc: Dave Hansen Cc: Johannes Weiner Cc: Mel Gorman Cc: Michal Hocko Cc: osalvador Cc: Peter Zijlstra Cc: Rik van Riel Cc: Shakeel Butt Cc: Wei Xu Cc: Yang Shi Cc: Zhong Jiang Cc: Zi Yan Signed-off-by: Andrew Morton

sched: Move energy_aware sysctls to topology.c

2022-04-06T20:43:44+00:00

move energy_aware sysctls to topology.c and use the new register_sysctl_init() to register the sysctl interface. Signed-off-by: Zhen Ni Signed-off-by: Luis Chamberlain

sched: Move cfs_bandwidth_slice sysctls to fair.c

2022-04-06T20:43:43+00:00

move cfs_bandwidth_slice sysctls to fair.c and use the new register_sysctl_init() to register the sysctl interface. Signed-off-by: Zhen Ni Signed-off-by: Luis Chamberlain

sched: Move uclamp_util sysctls to core.c

2022-04-06T20:43:43+00:00

move uclamp_util sysctls to core.c and use the new register_sysctl_init() to register the sysctl interface. Signed-off-by: Zhen Ni Signed-off-by: Luis Chamberlain

sched: Move rr_timeslice sysctls to rt.c

2022-04-06T20:43:43+00:00

move rr_timeslice sysctls to rt.c and use the new register_sysctl_init() to register the sysctl interface. Signed-off-by: Zhen Ni Signed-off-by: Luis Chamberlain

sched: Move deadline_period sysctls to deadline.c

2022-04-06T20:43:43+00:00

move deadline_period sysctls to deadline.c and use the new register_sysctl_init() to register the sysctl interface. Signed-off-by: Zhen Ni Signed-off-by: Luis Chamberlain

sched: Move rt_period/runtime sysctls to rt.c

2022-04-06T20:43:43+00:00

move rt_period/runtime sysctls to rt.c and use the new register_sysctl_init() to register the sysctl interface. Signed-off-by: Zhen Ni Signed-off-by: Luis Chamberlain

sched: Move schedstats sysctls to core.c

2022-04-06T20:43:43+00:00

move schedstats sysctls to core.c and use the new register_sysctl_init() to register the sysctl interface. Signed-off-by: Zhen Ni Signed-off-by: Luis Chamberlain

sched: Move child_runs_first sysctls to fair.c

2022-04-06T20:43:43+00:00

move child_runs_first sysctls to fair.c and use the new register_sysctl_init() to register the sysctl interface. Signed-off-by: Zhen Ni Signed-off-by: Luis Chamberlain