Lines Matching full:cs
146 struct cpuset *cs = task_cs(p); in inc_dl_tasks_cs() local
148 cs->nr_deadline_tasks++; in inc_dl_tasks_cs()
153 struct cpuset *cs = task_cs(p); in dec_dl_tasks_cs() local
155 cs->nr_deadline_tasks--; in dec_dl_tasks_cs()
158 static inline bool is_partition_valid(const struct cpuset *cs) in is_partition_valid() argument
160 return cs->partition_root_state > 0; in is_partition_valid()
163 static inline bool is_partition_invalid(const struct cpuset *cs) in is_partition_invalid() argument
165 return cs->partition_root_state < 0; in is_partition_invalid()
168 static inline bool cs_is_member(const struct cpuset *cs) in cs_is_member() argument
170 return cs->partition_root_state == PRS_MEMBER; in cs_is_member()
176 static inline void make_partition_invalid(struct cpuset *cs) in make_partition_invalid() argument
178 if (cs->partition_root_state > 0) in make_partition_invalid()
179 cs->partition_root_state = -cs->partition_root_state; in make_partition_invalid()
185 static inline void notify_partition_change(struct cpuset *cs, int old_prs) in notify_partition_change() argument
187 if (old_prs == cs->partition_root_state) in notify_partition_change()
189 cgroup_file_notify(&cs->partition_file); in notify_partition_change()
192 if (is_partition_valid(cs)) in notify_partition_change()
193 WRITE_ONCE(cs->prs_err, PERR_NONE); in notify_partition_change()
316 * decrease cs->attach_in_progress.
317 * wake_up cpuset_attach_wq if cs->attach_in_progress==0.
319 static inline void dec_attach_in_progress_locked(struct cpuset *cs) in dec_attach_in_progress_locked() argument
323 cs->attach_in_progress--; in dec_attach_in_progress_locked()
324 if (!cs->attach_in_progress) in dec_attach_in_progress_locked()
328 static inline void dec_attach_in_progress(struct cpuset *cs) in dec_attach_in_progress() argument
331 dec_attach_in_progress_locked(cs); in dec_attach_in_progress()
357 * @cs: partition root to be checked
361 * It is assumed that @cs is a valid partition root. @excluded_child should
364 static inline bool partition_is_populated(struct cpuset *cs, in partition_is_populated() argument
370 if (cs->css.cgroup->nr_populated_csets) in partition_is_populated()
372 if (!excluded_child && !cs->nr_subparts) in partition_is_populated()
373 return cgroup_is_populated(cs->css.cgroup); in partition_is_populated()
376 cpuset_for_each_child(child, css, cs) { in partition_is_populated()
405 struct cpuset *cs; in guarantee_active_cpus() local
411 cs = task_cs(tsk); in guarantee_active_cpus()
413 while (!cpumask_intersects(cs->effective_cpus, pmask)) in guarantee_active_cpus()
414 cs = parent_cs(cs); in guarantee_active_cpus()
416 cpumask_and(pmask, pmask, cs->effective_cpus); in guarantee_active_cpus()
431 static void guarantee_online_mems(struct cpuset *cs, nodemask_t *pmask) in guarantee_online_mems() argument
433 while (!nodes_intersects(cs->effective_mems, node_states[N_MEMORY])) in guarantee_online_mems()
434 cs = parent_cs(cs); in guarantee_online_mems()
435 nodes_and(*pmask, cs->effective_mems, node_states[N_MEMORY]); in guarantee_online_mems()
498 * @cs: Source cpuset to duplicate (NULL for a fresh allocation)
501 * 1. Duplicating an existing cpuset (if @cs is non-NULL), or
502 * 2. Allocating a fresh cpuset with zero-initialized masks (if @cs is NULL)
506 static struct cpuset *dup_or_alloc_cpuset(struct cpuset *cs) in dup_or_alloc_cpuset() argument
511 trial = cs ? kmemdup(cs, sizeof(*cs), GFP_KERNEL) : in dup_or_alloc_cpuset()
512 kzalloc(sizeof(*cs), GFP_KERNEL); in dup_or_alloc_cpuset()
530 if (cs) { in dup_or_alloc_cpuset()
531 cpumask_copy(trial->cpus_allowed, cs->cpus_allowed); in dup_or_alloc_cpuset()
532 cpumask_copy(trial->effective_cpus, cs->effective_cpus); in dup_or_alloc_cpuset()
533 cpumask_copy(trial->effective_xcpus, cs->effective_xcpus); in dup_or_alloc_cpuset()
534 cpumask_copy(trial->exclusive_cpus, cs->exclusive_cpus); in dup_or_alloc_cpuset()
542 * @cs: the cpuset to be freed
544 static inline void free_cpuset(struct cpuset *cs) in free_cpuset() argument
546 free_cpumask_var(cs->cpus_allowed); in free_cpuset()
547 free_cpumask_var(cs->effective_cpus); in free_cpuset()
548 free_cpumask_var(cs->effective_xcpus); in free_cpuset()
549 free_cpumask_var(cs->exclusive_cpus); in free_cpuset()
550 kfree(cs); in free_cpuset()
554 static inline struct cpumask *user_xcpus(struct cpuset *cs) in user_xcpus() argument
556 return cpumask_empty(cs->exclusive_cpus) ? cs->cpus_allowed in user_xcpus()
557 : cs->exclusive_cpus; in user_xcpus()
560 static inline bool xcpus_empty(struct cpuset *cs) in xcpus_empty() argument
562 return cpumask_empty(cs->cpus_allowed) && in xcpus_empty()
563 cpumask_empty(cs->exclusive_cpus); in xcpus_empty()
1012 static void dl_update_tasks_root_domain(struct cpuset *cs) in dl_update_tasks_root_domain() argument
1017 if (cs->nr_deadline_tasks == 0) in dl_update_tasks_root_domain()
1020 css_task_iter_start(&cs->css, 0, &it); in dl_update_tasks_root_domain()
1030 struct cpuset *cs = NULL; in dl_rebuild_rd_accounting() local
1048 cpuset_for_each_descendant_pre(cs, pos_css, &top_cpuset) { in dl_rebuild_rd_accounting()
1050 if (cpumask_empty(cs->effective_cpus)) { in dl_rebuild_rd_accounting()
1055 css_get(&cs->css); in dl_rebuild_rd_accounting()
1059 dl_update_tasks_root_domain(cs); in dl_rebuild_rd_accounting()
1062 css_put(&cs->css); in dl_rebuild_rd_accounting()
1083 struct cpuset *cs; in rebuild_sched_domains_locked() local
1110 cpuset_for_each_descendant_pre(cs, pos_css, &top_cpuset) { in rebuild_sched_domains_locked()
1111 if (!is_partition_valid(cs)) { in rebuild_sched_domains_locked()
1115 if (!cpumask_subset(cs->effective_cpus, in rebuild_sched_domains_locked()
1159 * @cs: the cpuset in which each task's cpus_allowed mask needs to be changed
1162 * Iterate through each task of @cs updating its cpus_allowed to the
1173 void cpuset_update_tasks_cpumask(struct cpuset *cs, struct cpumask *new_cpus) in cpuset_update_tasks_cpumask() argument
1177 bool top_cs = cs == &top_cpuset; in cpuset_update_tasks_cpumask()
1179 css_task_iter_start(&cs->css, 0, &it); in cpuset_update_tasks_cpumask()
1193 cpumask_and(new_cpus, possible_mask, cs->effective_cpus); in cpuset_update_tasks_cpumask()
1203 * @cs: the cpuset the need to recompute the new effective_cpus mask
1209 struct cpuset *cs, struct cpuset *parent) in compute_effective_cpumask() argument
1211 cpumask_and(new_cpus, cs->cpus_allowed, parent->effective_cpus); in compute_effective_cpumask()
1225 static void update_sibling_cpumasks(struct cpuset *parent, struct cpuset *cs,
1233 static int update_partition_exclusive_flag(struct cpuset *cs, int new_prs) in update_partition_exclusive_flag() argument
1237 if (exclusive && !is_cpu_exclusive(cs)) { in update_partition_exclusive_flag()
1238 if (cpuset_update_flag(CS_CPU_EXCLUSIVE, cs, 1)) in update_partition_exclusive_flag()
1240 } else if (!exclusive && is_cpu_exclusive(cs)) { in update_partition_exclusive_flag()
1242 cpuset_update_flag(CS_CPU_EXCLUSIVE, cs, 0); in update_partition_exclusive_flag()
1254 static void update_partition_sd_lb(struct cpuset *cs, int old_prs) in update_partition_sd_lb() argument
1256 int new_prs = cs->partition_root_state; in update_partition_sd_lb()
1261 * If cs is not a valid partition root, the load balance state in update_partition_sd_lb()
1267 new_lb = is_sched_load_balance(parent_cs(cs)); in update_partition_sd_lb()
1269 if (new_lb != !!is_sched_load_balance(cs)) { in update_partition_sd_lb()
1272 set_bit(CS_SCHED_LOAD_BALANCE, &cs->flags); in update_partition_sd_lb()
1274 clear_bit(CS_SCHED_LOAD_BALANCE, &cs->flags); in update_partition_sd_lb()
1284 static bool tasks_nocpu_error(struct cpuset *parent, struct cpuset *cs, in tasks_nocpu_error() argument
1288 * A populated partition (cs or parent) can't have empty effective_cpus in tasks_nocpu_error()
1291 partition_is_populated(parent, cs)) || in tasks_nocpu_error()
1293 partition_is_populated(cs, NULL)); in tasks_nocpu_error()
1296 static void reset_partition_data(struct cpuset *cs) in reset_partition_data() argument
1298 struct cpuset *parent = parent_cs(cs); in reset_partition_data()
1305 cs->nr_subparts = 0; in reset_partition_data()
1306 if (cpumask_empty(cs->exclusive_cpus)) { in reset_partition_data()
1307 cpumask_clear(cs->effective_xcpus); in reset_partition_data()
1308 if (is_cpu_exclusive(cs)) in reset_partition_data()
1309 clear_bit(CS_CPU_EXCLUSIVE, &cs->flags); in reset_partition_data()
1311 if (!cpumask_and(cs->effective_cpus, parent->effective_cpus, cs->cpus_allowed)) in reset_partition_data()
1312 cpumask_copy(cs->effective_cpus, parent->effective_cpus); in reset_partition_data()
1421 * @cs: Current cpuset (will be skipped)
1426 * of @cs under @parent and removes their exclusive CPUs from @excpus.
1428 static int rm_siblings_excl_cpus(struct cpuset *parent, struct cpuset *cs, in rm_siblings_excl_cpus() argument
1443 if (sibling == cs) in rm_siblings_excl_cpus()
1463 * @cs: cpuset
1470 static int compute_excpus(struct cpuset *cs, struct cpumask *excpus) in compute_excpus() argument
1472 struct cpuset *parent = parent_cs(cs); in compute_excpus()
1474 cpumask_and(excpus, user_xcpus(cs), parent->effective_xcpus); in compute_excpus()
1476 if (!cpumask_empty(cs->exclusive_cpus)) in compute_excpus()
1479 return rm_siblings_excl_cpus(parent, cs, excpus); in compute_excpus()
1485 * @cs: The original cpuset that the trial configuration is based on
1488 * Computes the effective_xcpus for a trial configuration. @cs is provided to represent
1489 * the real cs.
1491 static int compute_trialcs_excpus(struct cpuset *trialcs, struct cpuset *cs) in compute_trialcs_excpus() argument
1497 if (cs_is_member(cs)) in compute_trialcs_excpus()
1503 return rm_siblings_excl_cpus(parent, cs, excpus); in compute_trialcs_excpus()
1506 static inline bool is_remote_partition(struct cpuset *cs) in is_remote_partition() argument
1508 return !list_empty(&cs->remote_sibling); in is_remote_partition()
1511 static inline bool is_local_partition(struct cpuset *cs) in is_local_partition() argument
1513 return is_partition_valid(cs) && !is_remote_partition(cs); in is_local_partition()
1518 * @cs: the cpuset to update
1526 static int remote_partition_enable(struct cpuset *cs, int new_prs, in remote_partition_enable() argument
1547 compute_excpus(cs, tmp->new_cpus); in remote_partition_enable()
1555 list_add(&cs->remote_sibling, &remote_children); in remote_partition_enable()
1556 cpumask_copy(cs->effective_xcpus, tmp->new_cpus); in remote_partition_enable()
1560 cs->prs_err = 0; in remote_partition_enable()
1572 * @cs: the cpuset to update
1579 static void remote_partition_disable(struct cpuset *cs, struct tmpmasks *tmp) in remote_partition_disable() argument
1583 WARN_ON_ONCE(!is_remote_partition(cs)); in remote_partition_disable()
1584 WARN_ON_ONCE(!cpumask_subset(cs->effective_xcpus, subpartitions_cpus)); in remote_partition_disable()
1587 list_del_init(&cs->remote_sibling); in remote_partition_disable()
1588 isolcpus_updated = partition_xcpus_del(cs->partition_root_state, in remote_partition_disable()
1589 NULL, cs->effective_xcpus); in remote_partition_disable()
1590 if (cs->prs_err) in remote_partition_disable()
1591 cs->partition_root_state = -cs->partition_root_state; in remote_partition_disable()
1593 cs->partition_root_state = PRS_MEMBER; in remote_partition_disable()
1596 compute_excpus(cs, cs->effective_xcpus); in remote_partition_disable()
1597 reset_partition_data(cs); in remote_partition_disable()
1611 * @cs: the cpuset to be updated
1619 static void remote_cpus_update(struct cpuset *cs, struct cpumask *xcpus, in remote_cpus_update() argument
1623 int prs = cs->partition_root_state; in remote_cpus_update()
1626 if (WARN_ON_ONCE(!is_remote_partition(cs))) in remote_cpus_update()
1629 WARN_ON_ONCE(!cpumask_subset(cs->effective_xcpus, subpartitions_cpus)); in remote_cpus_update()
1632 cs->prs_err = PERR_CPUSEMPTY; in remote_cpus_update()
1636 adding = cpumask_andnot(tmp->addmask, excpus, cs->effective_xcpus); in remote_cpus_update()
1637 deleting = cpumask_andnot(tmp->delmask, cs->effective_xcpus, excpus); in remote_cpus_update()
1647 cs->prs_err = PERR_ACCESS; in remote_cpus_update()
1650 cs->prs_err = PERR_NOCPUS; in remote_cpus_update()
1651 if (cs->prs_err) in remote_cpus_update()
1662 * update_sibling_cpumasks() below may iterate back to the same cs. in remote_cpus_update()
1664 cpumask_copy(cs->effective_xcpus, excpus); in remote_cpus_update()
1666 cpumask_copy(cs->exclusive_cpus, xcpus); in remote_cpus_update()
1680 remote_partition_disable(cs, tmp); in remote_cpus_update()
1705 * @cs: The cpuset that requests change in partition root state
1740 static int update_parent_effective_cpumask(struct cpuset *cs, int cmd, in update_parent_effective_cpumask() argument
1744 struct cpuset *parent = parent_cs(cs); in update_parent_effective_cpumask()
1751 struct cpumask *xcpus = user_xcpus(cs); in update_parent_effective_cpumask()
1755 WARN_ON_ONCE(is_remote_partition(cs)); /* For local partition only */ in update_parent_effective_cpumask()
1762 old_prs = new_prs = cs->partition_root_state; in update_parent_effective_cpumask()
1765 if (is_partition_invalid(cs)) in update_parent_effective_cpumask()
1790 if (!newmask && xcpus_empty(cs)) in update_parent_effective_cpumask()
1793 nocpu = tasks_nocpu_error(parent, cs, xcpus); in update_parent_effective_cpumask()
1802 if (compute_excpus(cs, xcpus)) in update_parent_effective_cpumask()
1803 WARN_ON_ONCE(!cpumask_empty(cs->exclusive_cpus)); in update_parent_effective_cpumask()
1816 if (tasks_nocpu_error(parent, cs, xcpus)) in update_parent_effective_cpumask()
1824 * (cs->effective_xcpus & cpu_active_mask) ⊆ parent->effective_cpus in update_parent_effective_cpumask()
1840 if (is_partition_valid(cs)) { in update_parent_effective_cpumask()
1841 cpumask_copy(tmp->addmask, cs->effective_xcpus); in update_parent_effective_cpumask()
1855 /* Check newmask again, whether cpus are available for parent/cs */ in update_parent_effective_cpumask()
1856 nocpu |= tasks_nocpu_error(parent, cs, newmask); in update_parent_effective_cpumask()
1872 if (is_partition_invalid(cs)) { in update_parent_effective_cpumask()
1923 if (is_partition_valid(cs)) in update_parent_effective_cpumask()
1926 } else if (is_partition_invalid(cs) && !cpumask_empty(xcpus) && in update_parent_effective_cpumask()
1938 if (child == cs) in update_parent_effective_cpumask()
1940 if (!cpusets_are_exclusive(cs, child)) { in update_parent_effective_cpumask()
1956 WRITE_ONCE(cs->prs_err, part_error); in update_parent_effective_cpumask()
1963 switch (cs->partition_root_state) { in update_parent_effective_cpumask()
1988 * CPU lists in cs haven't been updated yet. So defer it to later. in update_parent_effective_cpumask()
1991 int err = update_partition_exclusive_flag(cs, new_prs); in update_parent_effective_cpumask()
2006 cs->partition_root_state = new_prs; in update_parent_effective_cpumask()
2008 cs->nr_subparts = 0; in update_parent_effective_cpumask()
2011 * Adding to parent's effective_cpus means deletion CPUs from cs in update_parent_effective_cpumask()
2029 update_partition_exclusive_flag(cs, new_prs); in update_parent_effective_cpumask()
2033 update_sibling_cpumasks(parent, cs, tmp); in update_parent_effective_cpumask()
2042 update_partition_sd_lb(cs, old_prs); in update_parent_effective_cpumask()
2044 notify_partition_change(cs, old_prs); in update_parent_effective_cpumask()
2050 * @cs: partition root cpuset
2064 static void compute_partition_effective_cpumask(struct cpuset *cs, in compute_partition_effective_cpumask() argument
2069 bool populated = partition_is_populated(cs, NULL); in compute_partition_effective_cpumask()
2079 compute_excpus(cs, new_ecpus); in compute_partition_effective_cpumask()
2083 cpuset_for_each_child(child, css, cs) { in compute_partition_effective_cpumask()
2094 cs->effective_xcpus)) in compute_partition_effective_cpumask()
2108 cs->nr_subparts--; in compute_partition_effective_cpumask()
2122 * @cs: the cpuset to consider
2133 static void update_cpumasks_hier(struct cpuset *cs, struct tmpmasks *tmp, in update_cpumasks_hier() argument
2142 cpuset_for_each_descendant_pre(cp, pos_css, cs) { in update_cpumasks_hier()
2150 * For child remote partition root (!= cs), we need to call in update_cpumasks_hier()
2157 if (remote && (cp != cs)) { in update_cpumasks_hier()
2217 * for cs already in update_cpumask(). We should also call in update_cpumasks_hier()
2221 if ((cp != cs) && old_prs) { in update_cpumasks_hier()
2259 if (!cpumask_empty(cp->exclusive_cpus) && (cp != cs)) in update_cpumasks_hier()
2316 * @cs: Current cpuset
2319 static void update_sibling_cpumasks(struct cpuset *parent, struct cpuset *cs, in update_sibling_cpumasks() argument
2341 if (sibling == cs) in update_sibling_cpumasks()
2382 * @cs: The cpuset to validate
2390 static enum prs_errcode validate_partition(struct cpuset *cs, struct cpuset *trialcs) in validate_partition() argument
2392 struct cpuset *parent = parent_cs(cs); in validate_partition()
2404 if (tasks_nocpu_error(parent, cs, trialcs->effective_xcpus)) in validate_partition()
2410 static int cpus_allowed_validate_change(struct cpuset *cs, struct cpuset *trialcs, in cpus_allowed_validate_change() argument
2414 struct cpuset *parent = parent_cs(cs); in cpus_allowed_validate_change()
2416 retval = validate_change(cs, trialcs); in cpus_allowed_validate_change()
2449 * @cs: The target cpuset being modified
2456 static void partition_cpus_change(struct cpuset *cs, struct cpuset *trialcs, in partition_cpus_change() argument
2461 if (cs_is_member(cs)) in partition_cpus_change()
2464 prs_err = validate_partition(cs, trialcs); in partition_cpus_change()
2466 trialcs->prs_err = cs->prs_err = prs_err; in partition_cpus_change()
2468 if (is_remote_partition(cs)) { in partition_cpus_change()
2470 remote_partition_disable(cs, tmp); in partition_cpus_change()
2472 remote_cpus_update(cs, trialcs->exclusive_cpus, in partition_cpus_change()
2476 update_parent_effective_cpumask(cs, partcmd_invalidate, in partition_cpus_change()
2479 update_parent_effective_cpumask(cs, partcmd_update, in partition_cpus_change()
2486 * @cs: the cpuset to consider
2490 static int update_cpumask(struct cpuset *cs, struct cpuset *trialcs, in update_cpumask() argument
2496 int old_prs = cs->partition_root_state; in update_cpumask()
2503 if (cpumask_equal(cs->cpus_allowed, trialcs->cpus_allowed)) in update_cpumask()
2509 compute_trialcs_excpus(trialcs, cs); in update_cpumask()
2512 retval = cpus_allowed_validate_change(cs, trialcs, &tmp); in update_cpumask()
2520 force = !cpumask_equal(cs->effective_xcpus, trialcs->effective_xcpus); in update_cpumask()
2522 partition_cpus_change(cs, trialcs, &tmp); in update_cpumask()
2525 cpumask_copy(cs->cpus_allowed, trialcs->cpus_allowed); in update_cpumask()
2526 cpumask_copy(cs->effective_xcpus, trialcs->effective_xcpus); in update_cpumask()
2527 if ((old_prs > 0) && !is_partition_valid(cs)) in update_cpumask()
2528 reset_partition_data(cs); in update_cpumask()
2532 update_cpumasks_hier(cs, &tmp, force); in update_cpumask()
2535 if (cs->partition_root_state) in update_cpumask()
2536 update_partition_sd_lb(cs, old_prs); in update_cpumask()
2544 * @cs: the cpuset to consider
2548 * The tasks' cpumask will be updated if cs is a valid partition root.
2550 static int update_exclusive_cpumask(struct cpuset *cs, struct cpuset *trialcs, in update_exclusive_cpumask() argument
2556 int old_prs = cs->partition_root_state; in update_exclusive_cpumask()
2563 if (cpumask_equal(cs->exclusive_cpus, trialcs->exclusive_cpus)) in update_exclusive_cpumask()
2570 if (compute_trialcs_excpus(trialcs, cs)) in update_exclusive_cpumask()
2577 force = !cpumask_equal(cs->effective_xcpus, trialcs->effective_xcpus); in update_exclusive_cpumask()
2579 retval = validate_change(cs, trialcs); in update_exclusive_cpumask()
2587 partition_cpus_change(cs, trialcs, &tmp); in update_exclusive_cpumask()
2590 cpumask_copy(cs->exclusive_cpus, trialcs->exclusive_cpus); in update_exclusive_cpumask()
2591 cpumask_copy(cs->effective_xcpus, trialcs->effective_xcpus); in update_exclusive_cpumask()
2592 if ((old_prs > 0) && !is_partition_valid(cs)) in update_exclusive_cpumask()
2593 reset_partition_data(cs); in update_exclusive_cpumask()
2601 if (is_partition_valid(cs) || force) in update_exclusive_cpumask()
2602 update_cpumasks_hier(cs, &tmp, force); in update_exclusive_cpumask()
2605 if (cs->partition_root_state) in update_exclusive_cpumask()
2606 update_partition_sd_lb(cs, old_prs); in update_exclusive_cpumask()
2712 * @cs: the cpuset in which each task's mems_allowed mask needs to be changed
2714 * Iterate through each task of @cs updating its mems_allowed to the
2718 void cpuset_update_tasks_nodemask(struct cpuset *cs) in cpuset_update_tasks_nodemask() argument
2724 cpuset_being_rebound = cs; /* causes mpol_dup() rebind */ in cpuset_update_tasks_nodemask()
2726 guarantee_online_mems(cs, &newmems); in cpuset_update_tasks_nodemask()
2738 css_task_iter_start(&cs->css, 0, &it); in cpuset_update_tasks_nodemask()
2749 migrate = is_memory_migrate(cs); in cpuset_update_tasks_nodemask()
2751 mpol_rebind_mm(mm, &cs->mems_allowed); in cpuset_update_tasks_nodemask()
2753 cpuset_migrate_mm(mm, &cs->old_mems_allowed, &newmems); in cpuset_update_tasks_nodemask()
2761 * cs->old_mems_allowed. in cpuset_update_tasks_nodemask()
2763 cs->old_mems_allowed = newmems; in cpuset_update_tasks_nodemask()
2771 * @cs: the cpuset to consider
2781 static void update_nodemasks_hier(struct cpuset *cs, nodemask_t *new_mems) in update_nodemasks_hier() argument
2787 cpuset_for_each_descendant_pre(cp, pos_css, cs) { in update_nodemasks_hier()
2833 * Will take tasklist_lock, scan tasklist for tasks in cpuset cs,
2837 static int update_nodemask(struct cpuset *cs, struct cpuset *trialcs, in update_nodemask() argument
2856 if (nodes_equal(cs->mems_allowed, trialcs->mems_allowed)) { in update_nodemask()
2860 retval = validate_change(cs, trialcs); in update_nodemask()
2867 cs->mems_allowed = trialcs->mems_allowed; in update_nodemask()
2871 update_nodemasks_hier(cs, &trialcs->mems_allowed); in update_nodemask()
2890 * cs: the cpuset to update
2896 int cpuset_update_flag(cpuset_flagbits_t bit, struct cpuset *cs, in cpuset_update_flag() argument
2904 trialcs = dup_or_alloc_cpuset(cs); in cpuset_update_flag()
2913 err = validate_change(cs, trialcs); in cpuset_update_flag()
2917 balance_flag_changed = (is_sched_load_balance(cs) != in cpuset_update_flag()
2920 spread_flag_changed = ((is_spread_slab(cs) != is_spread_slab(trialcs)) in cpuset_update_flag()
2921 || (is_spread_page(cs) != is_spread_page(trialcs))); in cpuset_update_flag()
2924 cs->flags = trialcs->flags; in cpuset_update_flag()
2935 cpuset1_update_tasks_flags(cs); in cpuset_update_flag()
2943 * @cs: the cpuset to update
2949 static int update_prstate(struct cpuset *cs, int new_prs) in update_prstate() argument
2951 int err = PERR_NONE, old_prs = cs->partition_root_state; in update_prstate()
2952 struct cpuset *parent = parent_cs(cs); in update_prstate()
2962 if (new_prs && is_partition_invalid(cs)) in update_prstate()
2968 err = update_partition_exclusive_flag(cs, new_prs); in update_prstate()
2976 if (xcpus_empty(cs)) { in update_prstate()
2989 cpumask_intersects(cs->exclusive_cpus, subpartitions_cpus)) { in update_prstate()
3002 err = update_parent_effective_cpumask(cs, cmd, NULL, &tmpmask); in update_prstate()
3004 err = remote_partition_enable(cs, new_prs, &tmpmask); in update_prstate()
3017 if (is_remote_partition(cs)) in update_prstate()
3018 remote_partition_disable(cs, &tmpmask); in update_prstate()
3020 update_parent_effective_cpumask(cs, partcmd_disable, in update_prstate()
3035 update_partition_exclusive_flag(cs, new_prs); in update_prstate()
3039 cs->partition_root_state = new_prs; in update_prstate()
3040 WRITE_ONCE(cs->prs_err, err); in update_prstate()
3041 if (!is_partition_valid(cs)) in update_prstate()
3042 reset_partition_data(cs); in update_prstate()
3044 isolated_cpus_update(old_prs, new_prs, cs->effective_xcpus); in update_prstate()
3049 update_cpumasks_hier(cs, &tmpmask, !new_prs); in update_prstate()
3053 && cpumask_empty(cs->effective_xcpus)); in update_prstate()
3056 update_partition_sd_lb(cs, old_prs); in update_prstate()
3058 notify_partition_change(cs, old_prs); in update_prstate()
3073 static int cpuset_can_attach_check(struct cpuset *cs) in cpuset_can_attach_check() argument
3075 if (cpumask_empty(cs->effective_cpus) || in cpuset_can_attach_check()
3076 (!is_in_v2_mode() && nodes_empty(cs->mems_allowed))) in cpuset_can_attach_check()
3081 static void reset_migrate_dl_data(struct cpuset *cs) in reset_migrate_dl_data() argument
3083 cs->nr_migrate_dl_tasks = 0; in reset_migrate_dl_data()
3084 cs->sum_migrate_dl_bw = 0; in reset_migrate_dl_data()
3091 struct cpuset *cs, *oldcs; in cpuset_can_attach() local
3099 cs = css_cs(css); in cpuset_can_attach()
3104 ret = cpuset_can_attach_check(cs); in cpuset_can_attach()
3108 cpus_updated = !cpumask_equal(cs->effective_cpus, oldcs->effective_cpus); in cpuset_can_attach()
3109 mems_updated = !nodes_equal(cs->effective_mems, oldcs->effective_mems); in cpuset_can_attach()
3128 cs->nr_migrate_dl_tasks++; in cpuset_can_attach()
3129 cs->sum_migrate_dl_bw += task->dl.dl_bw; in cpuset_can_attach()
3133 if (!cs->nr_migrate_dl_tasks) in cpuset_can_attach()
3136 if (!cpumask_intersects(oldcs->effective_cpus, cs->effective_cpus)) { in cpuset_can_attach()
3137 int cpu = cpumask_any_and(cpu_active_mask, cs->effective_cpus); in cpuset_can_attach()
3140 reset_migrate_dl_data(cs); in cpuset_can_attach()
3145 ret = dl_bw_alloc(cpu, cs->sum_migrate_dl_bw); in cpuset_can_attach()
3147 reset_migrate_dl_data(cs); in cpuset_can_attach()
3157 cs->attach_in_progress++; in cpuset_can_attach()
3166 struct cpuset *cs; in cpuset_cancel_attach() local
3169 cs = css_cs(css); in cpuset_cancel_attach()
3172 dec_attach_in_progress_locked(cs); in cpuset_cancel_attach()
3174 if (cs->nr_migrate_dl_tasks) { in cpuset_cancel_attach()
3175 int cpu = cpumask_any(cs->effective_cpus); in cpuset_cancel_attach()
3177 dl_bw_free(cpu, cs->sum_migrate_dl_bw); in cpuset_cancel_attach()
3178 reset_migrate_dl_data(cs); in cpuset_cancel_attach()
3192 static void cpuset_attach_task(struct cpuset *cs, struct task_struct *task) in cpuset_attach_task() argument
3196 if (cs != &top_cpuset) in cpuset_attach_task()
3208 cpuset1_update_task_spread_flags(cs, task); in cpuset_attach_task()
3216 struct cpuset *cs; in cpuset_attach() local
3222 cs = css_cs(css); in cpuset_attach()
3226 cpus_updated = !cpumask_equal(cs->effective_cpus, in cpuset_attach()
3228 mems_updated = !nodes_equal(cs->effective_mems, oldcs->effective_mems); in cpuset_attach()
3237 cpuset_attach_nodemask_to = cs->effective_mems; in cpuset_attach()
3241 guarantee_online_mems(cs, &cpuset_attach_nodemask_to); in cpuset_attach()
3244 cpuset_attach_task(cs, task); in cpuset_attach()
3252 cpuset_attach_nodemask_to = cs->effective_mems; in cpuset_attach()
3253 if (!is_memory_migrate(cs) && !mems_updated) in cpuset_attach()
3270 if (is_memory_migrate(cs)) { in cpuset_attach()
3282 cs->old_mems_allowed = cpuset_attach_nodemask_to; in cpuset_attach()
3284 if (cs->nr_migrate_dl_tasks) { in cpuset_attach()
3285 cs->nr_deadline_tasks += cs->nr_migrate_dl_tasks; in cpuset_attach()
3286 oldcs->nr_deadline_tasks -= cs->nr_migrate_dl_tasks; in cpuset_attach()
3287 reset_migrate_dl_data(cs); in cpuset_attach()
3290 dec_attach_in_progress_locked(cs); in cpuset_attach()
3301 struct cpuset *cs = css_cs(of_css(of)); in cpuset_write_resmask() local
3306 if (cs == &top_cpuset) in cpuset_write_resmask()
3311 if (!is_cpuset_online(cs)) in cpuset_write_resmask()
3314 trialcs = dup_or_alloc_cpuset(cs); in cpuset_write_resmask()
3322 retval = update_cpumask(cs, trialcs, buf); in cpuset_write_resmask()
3325 retval = update_exclusive_cpumask(cs, trialcs, buf); in cpuset_write_resmask()
3328 retval = update_nodemask(cs, trialcs, buf); in cpuset_write_resmask()
3355 struct cpuset *cs = css_cs(seq_css(sf)); in cpuset_common_seq_show() local
3363 seq_printf(sf, "%*pbl\n", cpumask_pr_args(cs->cpus_allowed)); in cpuset_common_seq_show()
3366 seq_printf(sf, "%*pbl\n", nodemask_pr_args(&cs->mems_allowed)); in cpuset_common_seq_show()
3369 seq_printf(sf, "%*pbl\n", cpumask_pr_args(cs->effective_cpus)); in cpuset_common_seq_show()
3372 seq_printf(sf, "%*pbl\n", nodemask_pr_args(&cs->effective_mems)); in cpuset_common_seq_show()
3375 seq_printf(sf, "%*pbl\n", cpumask_pr_args(cs->exclusive_cpus)); in cpuset_common_seq_show()
3378 seq_printf(sf, "%*pbl\n", cpumask_pr_args(cs->effective_xcpus)); in cpuset_common_seq_show()
3396 struct cpuset *cs = css_cs(seq_css(seq)); in cpuset_partition_show() local
3399 switch (cs->partition_root_state) { in cpuset_partition_show()
3415 err = perr_strings[READ_ONCE(cs->prs_err)]; in cpuset_partition_show()
3428 struct cpuset *cs = css_cs(of_css(of)); in cpuset_partition_write() local
3444 if (is_cpuset_online(cs)) in cpuset_partition_write()
3445 retval = update_prstate(cs, val); in cpuset_partition_write()
3540 struct cpuset *cs; in cpuset_css_alloc() local
3545 cs = dup_or_alloc_cpuset(NULL); in cpuset_css_alloc()
3546 if (!cs) in cpuset_css_alloc()
3549 __set_bit(CS_SCHED_LOAD_BALANCE, &cs->flags); in cpuset_css_alloc()
3550 fmeter_init(&cs->fmeter); in cpuset_css_alloc()
3551 cs->relax_domain_level = -1; in cpuset_css_alloc()
3552 INIT_LIST_HEAD(&cs->remote_sibling); in cpuset_css_alloc()
3556 __set_bit(CS_MEMORY_MIGRATE, &cs->flags); in cpuset_css_alloc()
3558 return &cs->css; in cpuset_css_alloc()
3563 struct cpuset *cs = css_cs(css); in cpuset_css_online() local
3564 struct cpuset *parent = parent_cs(cs); in cpuset_css_online()
3573 set_bit(CS_SPREAD_PAGE, &cs->flags); in cpuset_css_online()
3575 set_bit(CS_SPREAD_SLAB, &cs->flags); in cpuset_css_online()
3580 clear_bit(CS_SCHED_LOAD_BALANCE, &cs->flags); in cpuset_css_online()
3586 cpumask_copy(cs->effective_cpus, parent->effective_cpus); in cpuset_css_online()
3587 cs->effective_mems = parent->effective_mems; in cpuset_css_online()
3617 cs->mems_allowed = parent->mems_allowed; in cpuset_css_online()
3618 cs->effective_mems = parent->mems_allowed; in cpuset_css_online()
3619 cpumask_copy(cs->cpus_allowed, parent->cpus_allowed); in cpuset_css_online()
3620 cpumask_copy(cs->effective_cpus, parent->cpus_allowed); in cpuset_css_online()
3636 struct cpuset *cs = css_cs(css); in cpuset_css_offline() local
3639 if (!cpuset_v2() && is_sched_load_balance(cs)) in cpuset_css_offline()
3640 cpuset_update_flag(CS_SCHED_LOAD_BALANCE, cs, 0); in cpuset_css_offline()
3653 struct cpuset *cs = css_cs(css); in cpuset_css_killed() local
3657 if (is_partition_valid(cs)) in cpuset_css_killed()
3658 update_prstate(cs, PRS_MEMBER); in cpuset_css_killed()
3664 struct cpuset *cs = css_cs(css); in cpuset_css_free() local
3666 free_cpuset(cs); in cpuset_css_free()
3694 struct cpuset *cs = css_cs(cset->subsys[cpuset_cgrp_id]); in cpuset_can_fork() local
3699 same_cs = (cs == task_cs(current)); in cpuset_can_fork()
3709 ret = cpuset_can_attach_check(cs); in cpuset_can_fork()
3725 cs->attach_in_progress++; in cpuset_can_fork()
3733 struct cpuset *cs = css_cs(cset->subsys[cpuset_cgrp_id]); in cpuset_cancel_fork() local
3737 same_cs = (cs == task_cs(current)); in cpuset_cancel_fork()
3743 dec_attach_in_progress(cs); in cpuset_cancel_fork()
3753 struct cpuset *cs; in cpuset_fork() local
3757 cs = task_cs(task); in cpuset_fork()
3758 same_cs = (cs == task_cs(current)); in cpuset_fork()
3762 if (cs == &top_cpuset) in cpuset_fork()
3772 guarantee_online_mems(cs, &cpuset_attach_nodemask_to); in cpuset_fork()
3773 cpuset_attach_task(cs, task); in cpuset_fork()
3775 dec_attach_in_progress_locked(cs); in cpuset_fork()
3838 hotplug_update_tasks(struct cpuset *cs, in hotplug_update_tasks() argument
3843 if (cpumask_empty(new_cpus) && !is_partition_valid(cs)) in hotplug_update_tasks()
3844 cpumask_copy(new_cpus, parent_cs(cs)->effective_cpus); in hotplug_update_tasks()
3846 *new_mems = parent_cs(cs)->effective_mems; in hotplug_update_tasks()
3849 cpumask_copy(cs->effective_cpus, new_cpus); in hotplug_update_tasks()
3850 cs->effective_mems = *new_mems; in hotplug_update_tasks()
3854 cpuset_update_tasks_cpumask(cs, new_cpus); in hotplug_update_tasks()
3856 cpuset_update_tasks_nodemask(cs); in hotplug_update_tasks()
3866 * @cs: cpuset in interest
3869 * Compare @cs's cpu and mem masks against top_cpuset and if some have gone
3870 * offline, update @cs accordingly. If @cs ends up with no CPU or memory,
3873 static void cpuset_hotplug_update_tasks(struct cpuset *cs, struct tmpmasks *tmp) in cpuset_hotplug_update_tasks() argument
3883 wait_event(cpuset_attach_wq, cs->attach_in_progress == 0); in cpuset_hotplug_update_tasks()
3891 if (cs->attach_in_progress) { in cpuset_hotplug_update_tasks()
3896 parent = parent_cs(cs); in cpuset_hotplug_update_tasks()
3897 compute_effective_cpumask(&new_cpus, cs, parent); in cpuset_hotplug_update_tasks()
3898 nodes_and(new_mems, cs->mems_allowed, parent->effective_mems); in cpuset_hotplug_update_tasks()
3900 if (!tmp || !cs->partition_root_state) in cpuset_hotplug_update_tasks()
3907 remote = is_remote_partition(cs); in cpuset_hotplug_update_tasks()
3908 if (remote || (is_partition_valid(cs) && is_partition_valid(parent))) in cpuset_hotplug_update_tasks()
3909 compute_partition_effective_cpumask(cs, &new_cpus); in cpuset_hotplug_update_tasks()
3912 partition_is_populated(cs, NULL)) { in cpuset_hotplug_update_tasks()
3913 cs->prs_err = PERR_HOTPLUG; in cpuset_hotplug_update_tasks()
3914 remote_partition_disable(cs, tmp); in cpuset_hotplug_update_tasks()
3915 compute_effective_cpumask(&new_cpus, cs, parent); in cpuset_hotplug_update_tasks()
3926 if (is_local_partition(cs) && (!is_partition_valid(parent) || in cpuset_hotplug_update_tasks()
3927 tasks_nocpu_error(parent, cs, &new_cpus))) in cpuset_hotplug_update_tasks()
3933 else if (is_partition_valid(parent) && is_partition_invalid(cs) && in cpuset_hotplug_update_tasks()
3934 !cpumask_empty(cs->effective_xcpus)) in cpuset_hotplug_update_tasks()
3938 update_parent_effective_cpumask(cs, partcmd, NULL, tmp); in cpuset_hotplug_update_tasks()
3939 if ((partcmd == partcmd_invalidate) || is_partition_valid(cs)) { in cpuset_hotplug_update_tasks()
3940 compute_partition_effective_cpumask(cs, &new_cpus); in cpuset_hotplug_update_tasks()
3946 cpus_updated = !cpumask_equal(&new_cpus, cs->effective_cpus); in cpuset_hotplug_update_tasks()
3947 mems_updated = !nodes_equal(new_mems, cs->effective_mems); in cpuset_hotplug_update_tasks()
3955 hotplug_update_tasks(cs, &new_cpus, &new_mems, in cpuset_hotplug_update_tasks()
3958 cpuset1_hotplug_update_tasks(cs, &new_cpus, &new_mems, in cpuset_hotplug_update_tasks()
4050 struct cpuset *cs; in cpuset_handle_hotplug() local
4054 cpuset_for_each_descendant_pre(cs, pos_css, &top_cpuset) { in cpuset_handle_hotplug()
4055 if (cs == &top_cpuset || !css_tryget_online(&cs->css)) in cpuset_handle_hotplug()
4059 cpuset_hotplug_update_tasks(cs, ptmp); in cpuset_handle_hotplug()
4062 css_put(&cs->css); in cpuset_handle_hotplug()
4133 struct cpuset *cs; in cpuset_cpus_allowed() local
4137 cs = task_cs(tsk); in cpuset_cpus_allowed()
4138 if (cs != &top_cpuset) in cpuset_cpus_allowed()
4145 if ((cs == &top_cpuset) || cpumask_empty(pmask)) { in cpuset_cpus_allowed()
4191 * But we used cs && cs->cpus_allowed lockless and thus can in cpuset_cpus_allowed_fallback()
4252 static struct cpuset *nearest_hardwall_ancestor(struct cpuset *cs) in nearest_hardwall_ancestor() argument
4254 while (!(is_mem_exclusive(cs) || is_mem_hardwall(cs)) && parent_cs(cs)) in nearest_hardwall_ancestor()
4255 cs = parent_cs(cs); in nearest_hardwall_ancestor()
4256 return cs; in nearest_hardwall_ancestor()
4301 struct cpuset *cs; /* current cpuset ancestors */ in cpuset_current_node_allowed() local
4324 cs = nearest_hardwall_ancestor(task_cs(current)); in cpuset_current_node_allowed()
4325 allowed = node_isset(node, cs->mems_allowed); in cpuset_current_node_allowed()
4334 struct cpuset *cs; in cpuset_node_allowed() local
4361 cs = container_of(css, struct cpuset, css); in cpuset_node_allowed()
4362 allowed = node_isset(nid, cs->effective_mems); in cpuset_node_allowed()