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sh: TS_RESTORE_SIGMASK conversion.

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Replace TIF_RESTORE_SIGMASK with TS_RESTORE_SIGMASK and define our own
set_restore_sigmask() function.  This saves the costly SMP-safe set_bit
operation, which we do not need for the sigmask flag since TIF_SIGPENDING
always has to be set too.

Based on the x86 and powerpc change.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This commit is contained in:
Paul Mundt
2009-10-14 16:05:42 +09:00
parent b195e46677
commit 56bfc42f6c
5 changed files with 44 additions and 23 deletions
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2
arch/sh/kernel/entry-common.S
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@ -133,7 +133,7 @@ work_pending:
! r8: current_thread_info
! t: result of "tst #_TIF_NEED_RESCHED, r0"
bf/s work_resched
tst #(_TIF_SIGPENDING | _TIF_RESTORE_SIGMASK), r0
tst #_TIF_SIGPENDING, r0
work_notifysig:
bt/s __restore_all
mov r15, r4