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signals: s390: renumber TIF_RESTORE_SIGMASK

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TIF_RESTORE_SIGMASK no longer needs to be in the _TIF_WORK_* masks.  Those low
bits are scarce, and are all used up now.  Renumber TIF_RESTORE_SIGMASK to
free one up.

Signed-off-by: Roland McGrath <roland@redhat.com>
Cc: Oleg Nesterov <oleg@tv-sign.ru>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: "Luck, Tony" <tony.luck@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Roland McGrath 2008-04-30 00:53:08 -07:00 committed by Linus Torvalds
parent 7648d961fc
commit 02a029b325
3 changed files with 14 additions and 14 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
arch/s390/kernel/entry.S
View File

@ -49,9 +49,9 @@ SP_ILC = STACK_FRAME_OVERHEAD + __PT_ILC
SP_TRAP = STACK_FRAME_OVERHEAD + __PT_TRAP
SP_SIZE = STACK_FRAME_OVERHEAD + __PT_SIZE
_TIF_WORK_SVC = (_TIF_SIGPENDING | _TIF_RESTORE_SIGMASK | _TIF_NEED_RESCHED | \
_TIF_WORK_SVC = (_TIF_SIGPENDING | _TIF_NEED_RESCHED | \
_TIF_MCCK_PENDING | _TIF_RESTART_SVC | _TIF_SINGLE_STEP )
_TIF_WORK_INT = (_TIF_SIGPENDING | _TIF_RESTORE_SIGMASK | _TIF_NEED_RESCHED | \
_TIF_WORK_INT = (_TIF_SIGPENDING | _TIF_NEED_RESCHED | \
_TIF_MCCK_PENDING)
STACK_SHIFT = PAGE_SHIFT + THREAD_ORDER
@ -316,7 +316,7 @@ sysc_work:
bo BASED(sysc_mcck_pending)
tm __TI_flags+3(%r9),_TIF_NEED_RESCHED
bo BASED(sysc_reschedule)
tm __TI_flags+3(%r9),(_TIF_SIGPENDING | _TIF_RESTORE_SIGMASK)
tm __TI_flags+3(%r9),_TIF_SIGPENDING
bnz BASED(sysc_sigpending)
tm __TI_flags+3(%r9),_TIF_RESTART_SVC
bo BASED(sysc_restart)
@ -342,7 +342,7 @@ sysc_mcck_pending:
br %r1 # TIF bit will be cleared by handler
#
# _TIF_SIGPENDING or _TIF_RESTORE_SIGMASK is set, call do_signal
# _TIF_SIGPENDING is set, call do_signal
#
sysc_sigpending:
ni __TI_flags+3(%r9),255-_TIF_SINGLE_STEP # clear TIF_SINGLE_STEP
@ -657,7 +657,7 @@ io_work:
lr %r15,%r1
#
# One of the work bits is on. Find out which one.
# Checked are: _TIF_SIGPENDING, _TIF_RESTORE_SIGMASK, _TIF_NEED_RESCHED
# Checked are: _TIF_SIGPENDING, _TIF_NEED_RESCHED
# and _TIF_MCCK_PENDING
#
io_work_loop:
@ -665,7 +665,7 @@ io_work_loop:
bo BASED(io_mcck_pending)
tm __TI_flags+3(%r9),_TIF_NEED_RESCHED
bo BASED(io_reschedule)
tm __TI_flags+3(%r9),(_TIF_SIGPENDING | _TIF_RESTORE_SIGMASK)
tm __TI_flags+3(%r9),_TIF_SIGPENDING
bnz BASED(io_sigpending)
b BASED(io_restore)
io_work_done:
@ -693,7 +693,7 @@ io_reschedule:
b BASED(io_work_loop)
#
# _TIF_SIGPENDING or _TIF_RESTORE_SIGMASK is set, call do_signal
# _TIF_SIGPENDING is set, call do_signal
#
io_sigpending:
TRACE_IRQS_ON

12
arch/s390/kernel/entry64.S
View File

@ -52,9 +52,9 @@ SP_SIZE = STACK_FRAME_OVERHEAD + __PT_SIZE
STACK_SHIFT = PAGE_SHIFT + THREAD_ORDER
STACK_SIZE = 1 << STACK_SHIFT
_TIF_WORK_SVC = (_TIF_SIGPENDING | _TIF_RESTORE_SIGMASK | _TIF_NEED_RESCHED | \
_TIF_WORK_SVC = (_TIF_SIGPENDING | _TIF_NEED_RESCHED | \
_TIF_MCCK_PENDING | _TIF_RESTART_SVC | _TIF_SINGLE_STEP )
_TIF_WORK_INT = (_TIF_SIGPENDING | _TIF_RESTORE_SIGMASK | _TIF_NEED_RESCHED | \
_TIF_WORK_INT = (_TIF_SIGPENDING | _TIF_NEED_RESCHED | \
_TIF_MCCK_PENDING)
#define BASED(name) name-system_call(%r13)
@ -308,7 +308,7 @@ sysc_work:
jo sysc_mcck_pending
tm __TI_flags+7(%r9),_TIF_NEED_RESCHED
jo sysc_reschedule
tm __TI_flags+7(%r9),(_TIF_SIGPENDING | _TIF_RESTORE_SIGMASK)
tm __TI_flags+7(%r9),_TIF_SIGPENDING
jnz sysc_sigpending
tm __TI_flags+7(%r9),_TIF_RESTART_SVC
jo sysc_restart
@ -332,7 +332,7 @@ sysc_mcck_pending:
jg s390_handle_mcck # TIF bit will be cleared by handler
#
# _TIF_SIGPENDING or _TIF_RESTORE_SIGMASK is set, call do_signal
# _TIF_SIGPENDING is set, call do_signal
#
sysc_sigpending:
ni __TI_flags+7(%r9),255-_TIF_SINGLE_STEP # clear TIF_SINGLE_STEP
@ -648,7 +648,7 @@ io_work_loop:
jo io_mcck_pending
tm __TI_flags+7(%r9),_TIF_NEED_RESCHED
jo io_reschedule
tm __TI_flags+7(%r9),(_TIF_SIGPENDING | _TIF_RESTORE_SIGMASK)
tm __TI_flags+7(%r9),_TIF_SIGPENDING
jnz io_sigpending
j io_restore
io_work_done:
@ -674,7 +674,7 @@ io_reschedule:
j io_work_loop
#
# _TIF_SIGPENDING or _TIF_RESTORE_SIGMASK is set, call do_signal
# _TIF_SIGPENDING or is set, call do_signal
#
io_sigpending:
TRACE_IRQS_ON

2
include/asm-s390/thread_info.h
View File

@ -89,7 +89,6 @@ static inline struct thread_info *current_thread_info(void)
* thread information flags bit numbers
*/
#define TIF_SYSCALL_TRACE 0 /* syscall trace active */
#define TIF_RESTORE_SIGMASK 1 /* restore signal mask in do_signal() */
#define TIF_SIGPENDING 2 /* signal pending */
#define TIF_NEED_RESCHED 3 /* rescheduling necessary */
#define TIF_RESTART_SVC 4 /* restart svc with new svc number */
@ -101,6 +100,7 @@ static inline struct thread_info *current_thread_info(void)
TIF_NEED_RESCHED */
#define TIF_31BIT 18 /* 32bit process */
#define TIF_MEMDIE 19
#define TIF_RESTORE_SIGMASK 20 /* restore signal mask in do_signal() */
#define _TIF_SYSCALL_TRACE (1<<TIF_SYSCALL_TRACE)
#define _TIF_RESTORE_SIGMASK (1<<TIF_RESTORE_SIGMASK)