diff options
Diffstat (limited to 'kernel/async.c')
| -rw-r--r-- | kernel/async.c | 63 |
1 files changed, 32 insertions, 31 deletions
diff --git a/kernel/async.c b/kernel/async.c index a893d6170944..4f9c1d614016 100644 --- a/kernel/async.c +++ b/kernel/async.c @@ -1,13 +1,9 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * async.c: Asynchronous function calls for boot performance * * (C) Copyright 2009 Intel Corporation * Author: Arjan van de Ven <arjan@linux.intel.com> - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; version 2 - * of the License. */ @@ -119,7 +115,7 @@ static void async_run_entry_fn(struct work_struct *work) /* 1) run (and print duration) */ if (initcall_debug && system_state < SYSTEM_RUNNING) { - pr_debug("calling %lli_%pF @ %i\n", + pr_debug("calling %lli_%pS @ %i\n", (long long)entry->cookie, entry->func, task_pid_nr(current)); calltime = ktime_get(); @@ -128,7 +124,7 @@ static void async_run_entry_fn(struct work_struct *work) if (initcall_debug && system_state < SYSTEM_RUNNING) { rettime = ktime_get(); delta = ktime_sub(rettime, calltime); - pr_debug("initcall %lli_%pF returned 0 after %lld usecs\n", + pr_debug("initcall %lli_%pS returned 0 after %lld usecs\n", (long long)entry->cookie, entry->func, (long long)ktime_to_ns(delta) >> 10); @@ -149,7 +145,25 @@ static void async_run_entry_fn(struct work_struct *work) wake_up(&async_done); } -static async_cookie_t __async_schedule(async_func_t func, void *data, struct async_domain *domain) +/** + * async_schedule_node_domain - NUMA specific version of async_schedule_domain + * @func: function to execute asynchronously + * @data: data pointer to pass to the function + * @node: NUMA node that we want to schedule this on or close to + * @domain: the domain + * + * Returns an async_cookie_t that may be used for checkpointing later. + * @domain may be used in the async_synchronize_*_domain() functions to + * wait within a certain synchronization domain rather than globally. + * + * Note: This function may be called from atomic or non-atomic contexts. + * + * The node requested will be honored on a best effort basis. If the node + * has no CPUs associated with it then the work is distributed among all + * available CPUs. + */ +async_cookie_t async_schedule_node_domain(async_func_t func, void *data, + int node, struct async_domain *domain) { struct async_entry *entry; unsigned long flags; @@ -195,43 +209,30 @@ static async_cookie_t __async_schedule(async_func_t func, void *data, struct asy current->flags |= PF_USED_ASYNC; /* schedule for execution */ - queue_work(system_unbound_wq, &entry->work); + queue_work_node(node, system_unbound_wq, &entry->work); return newcookie; } +EXPORT_SYMBOL_GPL(async_schedule_node_domain); /** - * async_schedule - schedule a function for asynchronous execution + * async_schedule_node - NUMA specific version of async_schedule * @func: function to execute asynchronously * @data: data pointer to pass to the function + * @node: NUMA node that we want to schedule this on or close to * * Returns an async_cookie_t that may be used for checkpointing later. * Note: This function may be called from atomic or non-atomic contexts. - */ -async_cookie_t async_schedule(async_func_t func, void *data) -{ - return __async_schedule(func, data, &async_dfl_domain); -} -EXPORT_SYMBOL_GPL(async_schedule); - -/** - * async_schedule_domain - schedule a function for asynchronous execution within a certain domain - * @func: function to execute asynchronously - * @data: data pointer to pass to the function - * @domain: the domain * - * Returns an async_cookie_t that may be used for checkpointing later. - * @domain may be used in the async_synchronize_*_domain() functions to - * wait within a certain synchronization domain rather than globally. A - * synchronization domain is specified via @domain. Note: This function - * may be called from atomic or non-atomic contexts. + * The node requested will be honored on a best effort basis. If the node + * has no CPUs associated with it then the work is distributed among all + * available CPUs. */ -async_cookie_t async_schedule_domain(async_func_t func, void *data, - struct async_domain *domain) +async_cookie_t async_schedule_node(async_func_t func, void *data, int node) { - return __async_schedule(func, data, domain); + return async_schedule_node_domain(func, data, node, &async_dfl_domain); } -EXPORT_SYMBOL_GPL(async_schedule_domain); +EXPORT_SYMBOL_GPL(async_schedule_node); /** * async_synchronize_full - synchronize all asynchronous function calls |