The patch titled
x86: tracehook: TIF_NOTIFY_RESUME
has been removed from the -mm tree. Its filename was
x86-tracehook-tif_notify_resume.patch
This patch was dropped because it was merged into mainline or a subsystem tree
The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/
------------------------------------------------------
Subject: x86: tracehook: TIF_NOTIFY_RESUME
From: Roland McGrath <roland@xxxxxxxxxx>
This adds TIF_NOTIFY_RESUME support for x86, both 64-bit and 32-bit. When
set, we call tracehook_notify_resume() on the way to user mode.
Signed-off-by: Roland McGrath <roland@xxxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
arch/x86/kernel/signal_32.c | 5 +++++
arch/x86/kernel/signal_64.c | 5 +++++
include/asm-x86/thread_info.h | 4 +++-
3 files changed, 13 insertions(+), 1 deletion(-)
diff -puN arch/x86/kernel/signal_32.c~x86-tracehook-tif_notify_resume arch/x86/kernel/signal_32.c
--- a/arch/x86/kernel/signal_32.c~x86-tracehook-tif_notify_resume
+++ a/arch/x86/kernel/signal_32.c
@@ -663,5 +663,10 @@ do_notify_resume(struct pt_regs *regs, v
if (thread_info_flags & _TIF_SIGPENDING)
do_signal(regs);
+ if (thread_info_flags & _TIF_NOTIFY_RESUME) {
+ clear_thread_flag(TIF_NOTIFY_RESUME);
+ tracehook_notify_resume(regs);
+ }
+
clear_thread_flag(TIF_IRET);
}
diff -puN arch/x86/kernel/signal_64.c~x86-tracehook-tif_notify_resume arch/x86/kernel/signal_64.c
--- a/arch/x86/kernel/signal_64.c~x86-tracehook-tif_notify_resume
+++ a/arch/x86/kernel/signal_64.c
@@ -523,6 +523,11 @@ void do_notify_resume(struct pt_regs *re
/* deal with pending signal delivery */
if (thread_info_flags & _TIF_SIGPENDING)
do_signal(regs);
+
+ if (thread_info_flags & _TIF_NOTIFY_RESUME) {
+ clear_thread_flag(TIF_NOTIFY_RESUME);
+ tracehook_notify_resume(regs);
+ }
}
void signal_fault(struct pt_regs *regs, void __user *frame, char *where)
diff -puN include/asm-x86/thread_info.h~x86-tracehook-tif_notify_resume include/asm-x86/thread_info.h
--- a/include/asm-x86/thread_info.h~x86-tracehook-tif_notify_resume
+++ a/include/asm-x86/thread_info.h
@@ -71,6 +71,7 @@ struct thread_info {
* Warning: layout of LSW is hardcoded in entry.S
*/
#define TIF_SYSCALL_TRACE 0 /* syscall trace active */
+#define TIF_NOTIFY_RESUME 1 /* callback before returning to user */
#define TIF_SIGPENDING 2 /* signal pending */
#define TIF_NEED_RESCHED 3 /* rescheduling necessary */
#define TIF_SINGLESTEP 4 /* reenable singlestep on user return*/
@@ -93,6 +94,7 @@ struct thread_info {
#define TIF_BTS_TRACE_TS 27 /* record scheduling event timestamps */
#define _TIF_SYSCALL_TRACE (1 << TIF_SYSCALL_TRACE)
+#define _TIF_NOTIFY_RESUME (1 << TIF_NOTIFY_RESUME)
#define _TIF_SIGPENDING (1 << TIF_SIGPENDING)
#define _TIF_SINGLESTEP (1 << TIF_SINGLESTEP)
#define _TIF_NEED_RESCHED (1 << TIF_NEED_RESCHED)
@@ -133,7 +135,7 @@ struct thread_info {
/* Only used for 64 bit */
#define _TIF_DO_NOTIFY_MASK \
- (_TIF_SIGPENDING|_TIF_MCE_NOTIFY)
+ (_TIF_SIGPENDING|_TIF_MCE_NOTIFY|_TIF_NOTIFY_RESUME)
/* flags to check in __switch_to() */
#define _TIF_WORK_CTXSW \
_
Patches currently in -mm which might be from roland@xxxxxxxxxx are
linux-next.patch
x86-tracehook-config_have_arch_tracehook.patch
sched-do_wait_for_common-use-signal_pending_state.patch
wait_task_inactive-dont-consider-task-nivcsw.patch
wait_task_inactive-improve-the-returned-value-for-nvcsw-==-0.patch
wait_task_inactive-fix-the-config_smp-version.patch
posix-timers-dont-switch-to-group_leader-if-it_process-dies.patch
posix-timers-always-do-get_task_structtimer-it_process.patch
posix-timers-sys_timer_create-remove-the-buggy-pf_exiting-check.patch
posix-timers-sys_timer_create-simplify-and-s-tasklist-rcu.patch
posix-timers-move-the-initialization-of-timer-sigq-from-send-to-create-path.patch
posix-timers-sys_timer_create-cleanup-the-error-handling.patch
posix-timers-kill-it_sigev_signo-and-it_sigev_value.patch
posix-timers-lock_timer-kill-the-bogus-it_id-check.patch
posix-timers-lock_timer-make-it-readable.patch
make-ptrace_untrace-static.patch
coredump-format_corename-dont-append-%pid-if-multi-threaded.patch
kthread_bind-use-wait_task_inactivetask_uninterruptible.patch
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