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authorRichard Weinberger <richard@nod.at>2012-05-21 23:25:37 +0200
committerRichard Weinberger <richard@nod.at>2012-05-21 23:25:37 +0200
commit2ccf62b36097aa88e0ea152d6ef0c0ca2d3884e6 (patch)
treebc93e28e0e72fa0cc8c20f64f9e1f3657ad5e479 /arch/um
parent875682648b89a3ebc06176d60dc280f810647839 (diff)
parentffc51be82b17e1c515fdb2dd5b92605798216b30 (diff)
downloadlinux-linaro-stable-2ccf62b36097aa88e0ea152d6ef0c0ca2d3884e6.tar.gz
Merge branch 'for-um' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal into for-3.5
Diffstat (limited to 'arch/um')
-rw-r--r--arch/um/include/asm/thread_info.h2
-rw-r--r--arch/um/kernel/process.c10
-rw-r--r--arch/um/kernel/signal.c14
-rw-r--r--arch/um/kernel/skas/syscall.c2
4 files changed, 15 insertions, 13 deletions
diff --git a/arch/um/include/asm/thread_info.h b/arch/um/include/asm/thread_info.h
index 200c4ab1240c..c04e5ab68f56 100644
--- a/arch/um/include/asm/thread_info.h
+++ b/arch/um/include/asm/thread_info.h
@@ -71,6 +71,7 @@ static inline struct thread_info *current_thread_info(void)
#define TIF_MEMDIE 5 /* is terminating due to OOM killer */
#define TIF_SYSCALL_AUDIT 6
#define TIF_RESTORE_SIGMASK 7
+#define TIF_NOTIFY_RESUME 8
#define _TIF_SYSCALL_TRACE (1 << TIF_SYSCALL_TRACE)
#define _TIF_SIGPENDING (1 << TIF_SIGPENDING)
@@ -78,6 +79,5 @@ static inline struct thread_info *current_thread_info(void)
#define _TIF_POLLING_NRFLAG (1 << TIF_POLLING_NRFLAG)
#define _TIF_MEMDIE (1 << TIF_MEMDIE)
#define _TIF_SYSCALL_AUDIT (1 << TIF_SYSCALL_AUDIT)
-#define _TIF_RESTORE_SIGMASK (1 << TIF_RESTORE_SIGMASK)
#endif
diff --git a/arch/um/kernel/process.c b/arch/um/kernel/process.c
index 2b73dedb44ca..3a2235e0abc3 100644
--- a/arch/um/kernel/process.c
+++ b/arch/um/kernel/process.c
@@ -18,6 +18,7 @@
#include <linux/seq_file.h>
#include <linux/tick.h>
#include <linux/threads.h>
+#include <linux/tracehook.h>
#include <asm/current.h>
#include <asm/pgtable.h>
#include <asm/mmu_context.h>
@@ -114,8 +115,13 @@ void interrupt_end(void)
{
if (need_resched())
schedule();
- if (test_tsk_thread_flag(current, TIF_SIGPENDING))
+ if (test_thread_flag(TIF_SIGPENDING))
do_signal();
+ if (test_and_clear_thread_flag(TIF_NOTIFY_RESUME)) {
+ tracehook_notify_resume(&current->thread.regs);
+ if (current->replacement_session_keyring)
+ key_replace_session_keyring();
+ }
}
void exit_thread(void)
@@ -190,7 +196,7 @@ int copy_thread(unsigned long clone_flags, unsigned long sp,
if (current->thread.forking) {
memcpy(&p->thread.regs.regs, &regs->regs,
sizeof(p->thread.regs.regs));
- REGS_SET_SYSCALL_RETURN(p->thread.regs.regs.gp, 0);
+ UPT_SET_SYSCALL_RETURN(&p->thread.regs.regs, 0);
if (sp != 0)
REGS_SP(p->thread.regs.regs.gp) = sp;
diff --git a/arch/um/kernel/signal.c b/arch/um/kernel/signal.c
index fb12f4c5e649..187118fbe1bc 100644
--- a/arch/um/kernel/signal.c
+++ b/arch/um/kernel/signal.c
@@ -29,9 +29,6 @@ static int handle_signal(struct pt_regs *regs, unsigned long signr,
unsigned long sp;
int err;
- /* Always make any pending restarted system calls return -EINTR */
- current_thread_info()->restart_block.fn = do_no_restart_syscall;
-
/* Did we come from a system call? */
if (PT_REGS_SYSCALL_NR(regs) >= 0) {
/* If so, check system call restarting.. */
@@ -77,15 +74,14 @@ static int kern_do_signal(struct pt_regs *regs)
{
struct k_sigaction ka_copy;
siginfo_t info;
- sigset_t *oldset;
int sig, handled_sig = 0;
- if (test_thread_flag(TIF_RESTORE_SIGMASK))
- oldset = &current->saved_sigmask;
- else
- oldset = &current->blocked;
-
while ((sig = get_signal_to_deliver(&info, &ka_copy, regs, NULL)) > 0) {
+ sigset_t *oldset;
+ if (test_thread_flag(TIF_RESTORE_SIGMASK))
+ oldset = &current->saved_sigmask;
+ else
+ oldset = &current->blocked;
handled_sig = 1;
/* Whee! Actually deliver the signal. */
if (!handle_signal(regs, sig, &ka_copy, &info, oldset)) {
diff --git a/arch/um/kernel/skas/syscall.c b/arch/um/kernel/skas/syscall.c
index f5173e1ec3ac..05fbeb480e0b 100644
--- a/arch/um/kernel/skas/syscall.c
+++ b/arch/um/kernel/skas/syscall.c
@@ -34,7 +34,7 @@ void handle_syscall(struct uml_pt_regs *r)
result = -ENOSYS;
else result = EXECUTE_SYSCALL(syscall, regs);
- REGS_SET_SYSCALL_RETURN(r->gp, result);
+ UPT_SET_SYSCALL_RETURN(r, result);
syscall_trace(r, 1);
}