/* * net/core/netclassid_cgroup.c Classid Cgroupfs Handling * * 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; either version * 2 of the License, or (at your option) any later version. * * Authors: Thomas Graf */ #include #include #include #include #include static inline struct cgroup_cls_state *css_cls_state(struct cgroup_subsys_state *css) { return css ? container_of(css, struct cgroup_cls_state, css) : NULL; } struct cgroup_cls_state *task_cls_state(struct task_struct *p) { return css_cls_state(task_css_check(p, net_cls_cgrp_id, rcu_read_lock_bh_held())); } EXPORT_SYMBOL_GPL(task_cls_state); static struct cgroup_subsys_state * cgrp_css_alloc(struct cgroup_subsys_state *parent_css) { struct cgroup_cls_state *cs; cs = kzalloc(sizeof(*cs), GFP_KERNEL); if (!cs) return ERR_PTR(-ENOMEM); return &cs->css; } static int cgrp_css_online(struct cgroup_subsys_state *css) { struct cgroup_cls_state *cs = css_cls_state(css); struct cgroup_cls_state *parent = css_cls_state(css->parent); if (parent) cs->classid = parent->classid; return 0; } static void cgrp_css_free(struct cgroup_subsys_state *css) { kfree(css_cls_state(css)); } static int update_classid_sock(const void *v, struct file *file, unsigned n) { int err; struct socket *sock = sock_from_file(file, &err); if (sock) { spin_lock(&cgroup_sk_update_lock); sock_cgroup_set_classid(&sock->sk->sk_cgrp_data, (unsigned long)v); spin_unlock(&cgroup_sk_update_lock); } return 0; } static void update_classid(struct cgroup_subsys_state *css, void *v) { struct css_task_iter it; struct task_struct *p; css_task_iter_start(css, &it); while ((p = css_task_iter_next(&it))) { task_lock(p); iterate_fd(p->files, 0, update_classid_sock, v); task_unlock(p); } css_task_iter_end(&it); } static void cgrp_attach(struct cgroup_taskset *tset) { struct cgroup_subsys_state *css; cgroup_taskset_first(tset, &css); update_classid(css, (void *)(unsigned long)css_cls_state(css)->classid); } static u64 read_classid(struct cgroup_subsys_state *css, struct cftype *cft) { return css_cls_state(css)->classid; } static int write_classid(struct cgroup_subsys_state *css, struct cftype *cft, u64 value) { struct cgroup_cls_state *cs = css_cls_state(css); cgroup_sk_alloc_disable(); cs->classid = (u32)value; update_classid(css, (void *)(unsigned long)cs->classid); return 0; } static struct cftype ss_files[] = { { .name = "classid", .read_u64 = read_classid, .write_u64 = write_classid, }, { } /* terminate */ }; struct cgroup_subsys net_cls_cgrp_subsys = { .css_alloc = cgrp_css_alloc, .css_online = cgrp_css_online, .css_free = cgrp_css_free, .attach = cgrp_attach, .legacy_cftypes = ss_files, }; >
path: root/include/dt-bindings/leds/leds-netxbig.h
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authorDmitry Torokhov <dmitry.torokhov@gmail.com>2016-12-27 11:32:55 -0800
committerDmitry Torokhov <dmitry.torokhov@gmail.com>2016-12-27 13:20:21 -0800
commitd7ddad0acc4add42567f7879b116a0b9eea31860 (patch)
treef4c9a71249978a8da745d82b98b65ae44b555ed6 /include/dt-bindings/leds/leds-netxbig.h
parent5191d88acc688743eef56f1c598a4e4cddf6c6cd (diff)
Input: synaptics-rmi4 - fix F03 build error when serio is module
Since F03 is a boolean, "depends" on symbols that can be modules do not work quite right. We can enable F03 if SERIO is built-in or if both RMI core and SERIO core are modules. If SERIO core is module, but RMI is built-in, we'll get: drivers/built-in.o: In function `rmi_f03_attention': rmi_f03.c:(.text+0xf8ef8): undefined reference to `serio_interrupt' rmi_f03.c:(.text+0xf8fbd): undefined reference to `serio_interrupt' drivers/built-in.o: In function `rmi_f03_remove': rmi_f03.c:(.text+0xf9082): undefined reference to `serio_unregister_port' drivers/built-in.o: In function `rmi_f03_probe': rmi_f03.c:(.text+0xf9260): undefined reference to `__serio_register_port' Reported-by: Randy Dunlap <rdunlap@infradead.org> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Diffstat (limited to 'include/dt-bindings/leds/leds-netxbig.h')