From: Richard Kuo <rkuo@codeaurora.org>
To: linux-arch@vger.kernel.org, linux-hexagon@vger.kernel.org,
linux-kernel@vger.kernel.org, viro@ZenIV.linux.org.uk
Cc: Richard Kuo <rkuo@codeaurora.org>
Subject: [PATCH 2/6] Hexagon: fix up int enable/disable at ret_from_fork
Date: Wed, 3 Apr 2013 19:02:52 -0500 [thread overview]
Message-ID: <1365033776-21804-3-git-send-email-rkuo@codeaurora.org> (raw)
In-Reply-To: <1365033776-21804-1-git-send-email-rkuo@codeaurora.org>
Check return coming out of check_work_pending, and if copy_thread
passed us a function in r24, call it. Based on feedback from Al
Viro.
Signed-off-by: Richard Kuo <rkuo@codeaurora.org>
---
arch/hexagon/kernel/vm_entry.S | 13 +++++++++++--
1 file changed, 11 insertions(+), 2 deletions(-)
diff --git a/arch/hexagon/kernel/vm_entry.S b/arch/hexagon/kernel/vm_entry.S
index 053551e..0de8638 100644
--- a/arch/hexagon/kernel/vm_entry.S
+++ b/arch/hexagon/kernel/vm_entry.S
@@ -371,11 +371,20 @@ _K_enter_machcheck:
.globl ret_from_fork
ret_from_fork:
{
- call schedule_tail;
+ call schedule_tail
R16.H = #HI(do_work_pending);
}
{
+ P0 = cmp.eq(R24, #0);
R16.L = #LO(do_work_pending);
R0 = #VM_INT_DISABLE;
- jump check_work_pending;
+ }
+ if P0 jump check_work_pending
+ {
+ R0 = R25;
+ callr R24
+ }
+ {
+ jump check_work_pending
+ R0 = #VM_INT_DISABLE;
}
--
1.7.9.5
--
Sent by an employee of the Qualcomm Innovation Center, Inc.
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
hosted by The Linux Foundation
next prev parent reply other threads:[~2013-04-04 0:02 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-04-04 0:02 [PATCH 0/6] Hexagon: various signal and return path cleanups Richard Kuo
2013-04-04 0:02 ` [PATCH 1/6] Hexagon: Signal and return path fixes Richard Kuo
2013-04-04 0:02 ` Richard Kuo [this message]
2013-04-04 0:02 ` [PATCH 3/6] Hexagon: use correct work mask when checking for more work Richard Kuo
2013-04-04 0:02 ` [PATCH 4/6] Hexagon: check to if we will overflow the signal stack Richard Kuo
2013-04-04 16:25 ` Linas Vepstas
2013-04-04 16:58 ` Richard Kuo
2013-04-04 0:02 ` [PATCH 5/6] Hexagon: break up user fn/arg register setting Richard Kuo
2013-04-04 0:02 ` [PATCH 6/6] Hexagon: fix psp/sp macro Richard Kuo
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