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authorDave Airlie <airlied@redhat.com>2015-04-20 11:32:26 +1000
committerDave Airlie <airlied@redhat.com>2015-04-20 13:05:20 +1000
commit2c33ce009ca2389dbf0535d0672214d09738e35e (patch)
tree6186a6458c3c160385d794a23eaf07c786a9e61b /kernel/exec_domain.c
parentcec32a47010647e8b0603726ebb75b990a4057a4 (diff)
parent09d51602cf84a1264946711dd4ea0dddbac599a1 (diff)
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Merge Linus master into drm-next
The merge is clean, but the arm build fails afterwards, due to API changes in the regulator tree. I've included the patch into the merge to fix the build. Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'kernel/exec_domain.c')
-rw-r--r--kernel/exec_domain.c137
1 files changed, 1 insertions, 136 deletions
diff --git a/kernel/exec_domain.c b/kernel/exec_domain.c
index 83d4382f5699..6873bb3e6b7e 100644
--- a/kernel/exec_domain.c
+++ b/kernel/exec_domain.c
@@ -20,145 +20,10 @@
#include <linux/types.h>
#include <linux/fs_struct.h>
-
-static void default_handler(int, struct pt_regs *);
-
-static struct exec_domain *exec_domains = &default_exec_domain;
-static DEFINE_RWLOCK(exec_domains_lock);
-
-
-static unsigned long ident_map[32] = {
- 0, 1, 2, 3, 4, 5, 6, 7,
- 8, 9, 10, 11, 12, 13, 14, 15,
- 16, 17, 18, 19, 20, 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;
-}
-EXPORT_SYMBOL(register_exec_domain);
-
-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;
-}
-EXPORT_SYMBOL(unregister_exec_domain);
-
-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;
-}
-EXPORT_SYMBOL(__set_personality);
-
#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);
+ seq_puts(m, "0-0\tLinux \t[kernel]\n");
return 0;
}