From: Valentin Schneider <valentin.schneider@arm.com> To: linux-kernel@vger.kernel.org Cc: Yoshinori Sato <ysato@users.sourceforge.jp>, Rich Felker <dalias@libc.org>, linux-sh@vger.kernel.org Subject: [PATCH RESEND 6/7] sh: entry: Remove unneeded need_resched() loop Date: Tue, 28 May 2019 10:48:47 +0000 [thread overview] Message-ID: <20190528104848.13160-7-valentin.schneider@arm.com> (raw) In-Reply-To: <20190528104848.13160-1-valentin.schneider@arm.com> Since the enabling and disabling of IRQs within preempt_schedule_irq() is contained in a need_resched() loop, we don't need the outer arch code loop. Signed-off-by: Valentin Schneider <valentin.schneider@arm.com> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Cc: Rich Felker <dalias@libc.org> Cc: linux-sh@vger.kernel.org --- arch/sh/kernel/entry-common.S | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/arch/sh/kernel/entry-common.S b/arch/sh/kernel/entry-common.S index d31f66e82ce5..65a105de52a0 100644 --- a/arch/sh/kernel/entry-common.S +++ b/arch/sh/kernel/entry-common.S @@ -93,7 +93,7 @@ ENTRY(resume_kernel) mov.l @(TI_PRE_COUNT,r8), r0 ! current_thread_info->preempt_count tst r0, r0 bf noresched -need_resched: + mov.l @(TI_FLAGS,r8), r0 ! current_thread_info->flags tst #_TIF_NEED_RESCHED, r0 ! need_resched set? bt noresched @@ -107,8 +107,6 @@ need_resched: mov.l 1f, r0 jsr @r0 ! call preempt_schedule_irq nop - bra need_resched - nop noresched: bra __restore_all -- 2.20.1
WARNING: multiple messages have this Message-ID (diff)
From: Valentin Schneider <valentin.schneider@arm.com> To: linux-kernel@vger.kernel.org Cc: Yoshinori Sato <ysato@users.sourceforge.jp>, Rich Felker <dalias@libc.org>, linux-sh@vger.kernel.org Subject: [PATCH RESEND 6/7] sh: entry: Remove unneeded need_resched() loop Date: Tue, 28 May 2019 11:48:47 +0100 [thread overview] Message-ID: <20190528104848.13160-7-valentin.schneider@arm.com> (raw) In-Reply-To: <20190528104848.13160-1-valentin.schneider@arm.com> Since the enabling and disabling of IRQs within preempt_schedule_irq() is contained in a need_resched() loop, we don't need the outer arch code loop. Signed-off-by: Valentin Schneider <valentin.schneider@arm.com> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Cc: Rich Felker <dalias@libc.org> Cc: linux-sh@vger.kernel.org --- arch/sh/kernel/entry-common.S | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/arch/sh/kernel/entry-common.S b/arch/sh/kernel/entry-common.S index d31f66e82ce5..65a105de52a0 100644 --- a/arch/sh/kernel/entry-common.S +++ b/arch/sh/kernel/entry-common.S @@ -93,7 +93,7 @@ ENTRY(resume_kernel) mov.l @(TI_PRE_COUNT,r8), r0 ! current_thread_info->preempt_count tst r0, r0 bf noresched -need_resched: + mov.l @(TI_FLAGS,r8), r0 ! current_thread_info->flags tst #_TIF_NEED_RESCHED, r0 ! need_resched set? bt noresched @@ -107,8 +107,6 @@ need_resched: mov.l 1f, r0 jsr @r0 ! call preempt_schedule_irq nop - bra need_resched - nop noresched: bra __restore_all -- 2.20.1
next prev parent reply other threads:[~2019-05-28 10:48 UTC|newest] Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top 2019-05-28 10:48 [PATCH RESEND 0/7] entry: preempt_schedule_irq() callers scrub Valentin Schneider 2019-05-28 10:48 ` Valentin Schneider 2019-05-28 10:48 ` Valentin Schneider 2019-05-28 10:48 ` [PATCH RESEND 1/7] sched/core: Fix preempt_schedule() interrupt return comment Valentin Schneider 2019-05-28 10:58 ` Valentin Schneider 2019-06-11 19:30 ` Thomas Gleixner 2019-05-28 10:48 ` [PATCH RESEND 2/7] csky: entry: Remove unneeded need_resched() loop Valentin Schneider 2019-05-29 1:48 ` Guo Ren 2019-05-28 10:48 ` [PATCH RESEND 3/7] h8300: " Valentin Schneider 2019-05-28 10:48 ` [PATCH RESEND 4/7] microblaze: " Valentin Schneider 2019-05-28 10:48 ` [PATCH RESEND 5/7] RISC-V: " Valentin Schneider 2019-05-28 10:48 ` Valentin Schneider 2019-05-30 4:09 ` Palmer Dabbelt 2019-05-30 4:09 ` Palmer Dabbelt 2019-05-30 16:37 ` Valentin Schneider 2019-05-30 16:37 ` Valentin Schneider 2019-05-28 10:48 ` Valentin Schneider [this message] 2019-05-28 10:48 ` [PATCH RESEND 6/7] sh: " Valentin Schneider 2019-05-28 10:48 ` [PATCH RESEND 7/7] sh64: " Valentin Schneider 2019-05-28 10:48 ` Valentin Schneider
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