b51820ebea
This patch introduces DAMOS_MIGRATE_COLD action, which is similar to DAMOS_PAGEOUT, but migrate folios to the given 'target_nid' in the sysfs instead of swapping them out. The 'target_nid' sysfs knob informs the migration target node ID. Here is one of the example usage of this 'migrate_cold' action. $ cd /sys/kernel/mm/damon/admin/kdamonds/<N> $ cat contexts/<N>/schemes/<N>/action migrate_cold $ echo 2 > contexts/<N>/schemes/<N>/target_nid $ echo commit > state $ numactl -p 0 ./hot_cold 500M 600M & $ numastat -c -p hot_cold Per-node process memory usage (in MBs) PID Node 0 Node 1 Node 2 Total -------------- ------ ------ ------ ----- 701 (hot_cold) 501 0 601 1101 Since there are some common routines with pageout, many functions have similar logics between pageout and migrate cold. damon_pa_migrate_folio_list() is a minimized version of shrink_folio_list(). Link: https://lkml.kernel.org/r/20240614030010.751-6-honggyu.kim@sk.com Signed-off-by: Honggyu Kim <honggyu.kim@sk.com> Signed-off-by: Hyeongtak Ji <hyeongtak.ji@sk.com> Signed-off-by: SeongJae Park <sj@kernel.org> Cc: Gregory Price <gregory.price@memverge.com> Cc: Hyeonggon Yoo <42.hyeyoo@gmail.com> Cc: Masami Hiramatsu (Google) <mhiramat@kernel.org> Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Cc: Rakie Kim <rakie.kim@sk.com> Cc: Steven Rostedt (Google) <rostedt@goodmis.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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| .. | ||
| acpi | ||
| asm-generic | ||
| clocksource | ||
| crypto | ||
| drm | ||
| dt-bindings | ||
| keys | ||
| kunit | ||
| kvm | ||
| linux | ||
| math-emu | ||
| media | ||
| memory | ||
| misc | ||
| net | ||
| pcmcia | ||
| ras | ||
| rdma | ||
| rv | ||
| scsi | ||
| soc | ||
| sound | ||
| target | ||
| trace | ||
| uapi | ||
| ufs | ||
| vdso | ||
| video | ||
| xen | ||