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author	Dmitry Torokhov <dmitry.torokhov@gmail.com>	2010-10-05 00:46:10 -0400
committer	Dmitry Torokhov <dmitry.torokhov@gmail.com>	2010-10-13 10:49:27 -0400
commit	a8b3c0f57beaba9035e5339175628b63e551b243 (patch)
tree	5ceea4d6288f16f4de22f89ffedd89e6da8d6173 /tools/perf/scripts/python/sched-migration.py
parent	4780c8df3856398020be2928d9e9fa8c457a09a4 (diff)

Input: synaptics - simplify pass-through port handling

There was too much knowledge about internals if serio in the pass-through handling, clean it up. Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

Diffstat (limited to 'tools/perf/scripts/python/sched-migration.py')

0 files changed, 0 insertions, 0 deletions

num">21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31 }; struct exec_domain default_exec_domain = { .name = "Linux", /* name */ .handler = default_handler, /* lcall7 causes a seg fault. */ .pers_low = 0, /* PER_LINUX personality. */ .pers_high = 0, /* PER_LINUX personality. */ .signal_map = ident_map, /* Identity map signals. */ .signal_invmap = ident_map, /* - both ways. */ }; static void default_handler(int segment, struct pt_regs *regp) { set_personality(0); if (current_thread_info()->exec_domain->handler != default_handler) current_thread_info()->exec_domain->handler(segment, regp); else send_sig(SIGSEGV, current, 1); } static struct exec_domain * lookup_exec_domain(unsigned int personality) { unsigned int pers = personality(personality); struct exec_domain *ep; read_lock(&exec_domains_lock); for (ep = exec_domains; ep; ep = ep->next) { if (pers >= ep->pers_low && pers <= ep->pers_high) if (try_module_get(ep->module)) goto out; } #ifdef CONFIG_MODULES read_unlock(&exec_domains_lock); request_module("personality-%d", pers); read_lock(&exec_domains_lock); for (ep = exec_domains; ep; ep = ep->next) { if (pers >= ep->pers_low && pers <= ep->pers_high) if (try_module_get(ep->module)) goto out; } #endif ep = &default_exec_domain; out: read_unlock(&exec_domains_lock); return (ep); } int register_exec_domain(struct exec_domain *ep) { struct exec_domain *tmp; int err = -EBUSY; if (ep == NULL) return -EINVAL; if (ep->next != NULL) return -EBUSY; write_lock(&exec_domains_lock); for (tmp = exec_domains; tmp; tmp = tmp->next) { if (tmp == ep) goto out; } ep->next = exec_domains; exec_domains = ep; err = 0; out: write_unlock(&exec_domains_lock); return (err); } int unregister_exec_domain(struct exec_domain *ep) { struct exec_domain **epp; epp = &exec_domains; write_lock(&exec_domains_lock); for (epp = &exec_domains; *epp; epp = &(*epp)->next) { if (ep == *epp) goto unregister; } write_unlock(&exec_domains_lock); return -EINVAL; unregister: *epp = ep->next; ep->next = NULL; write_unlock(&exec_domains_lock); return 0; } int __set_personality(unsigned int personality) { struct exec_domain *oep = current_thread_info()->exec_domain; current_thread_info()->exec_domain = lookup_exec_domain(personality); current->personality = personality; module_put(oep->module); return 0; } #ifdef CONFIG_PROC_FS static int execdomains_proc_show(struct seq_file *m, void *v) { struct exec_domain *ep; read_lock(&exec_domains_lock); for (ep = exec_domains; ep; ep = ep->next) seq_printf(m, "%d-%d\t%-16s\t[%s]\n", ep->pers_low, ep->pers_high, ep->name, module_name(ep->module)); read_unlock(&exec_domains_lock); return 0; } static int execdomains_proc_open(struct inode *inode, struct file *file) { return single_open(file, execdomains_proc_show, NULL); } static const struct file_operations execdomains_proc_fops = { .open = execdomains_proc_open, .read = seq_read, .llseek = seq_lseek, .release = single_release, }; static int __init proc_execdomains_init(void) { proc_create("execdomains", 0, NULL, &execdomains_proc_fops); return 0; } module_init(proc_execdomains_init); #endif SYSCALL_DEFINE1(personality, unsigned int, personality) { unsigned int old = current->personality; if (personality != 0xffffffff) set_personality(personality); return old; } EXPORT_SYMBOL(register_exec_domain); EXPORT_SYMBOL(unregister_exec_domain); EXPORT_SYMBOL(__set_personality);


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