From: Vineet Gupta <Vineet.Gupta1@synopsys.com>
To: linux-arch@vger.kernel.org
Cc: linux-kernel@vger.kernel.org, arc-linux-dev@synopsys.com,
Vineet Gupta <Vineet.Gupta1@synopsys.com>
Subject: [PATCH 16/19] ARC: entry.S: use single EXCEPTION_PROLOGUE
Date: Sun, 7 Jun 2015 14:08:20 +0530 [thread overview]
Message-ID: <1433666303-26112-17-git-send-email-vgupta@synopsys.com> (raw)
In-Reply-To: <1433666303-26112-1-git-send-email-vgupta@synopsys.com>
Returning from pure kernel mode and exception mode use the same code
anyways. Remove one the duplicate blocks
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
---
arch/arc/kernel/entry-compact.S | 14 ++++++--------
1 file changed, 6 insertions(+), 8 deletions(-)
diff --git a/arch/arc/kernel/entry-compact.S b/arch/arc/kernel/entry-compact.S
index abc62cd10a8c..15d457b4403a 100644
--- a/arch/arc/kernel/entry-compact.S
+++ b/arch/arc/kernel/entry-compact.S
@@ -321,14 +321,11 @@ END(call_do_page_fault)
; decide that.
; if Returning from Exception
- bbit0 r10, STATUS_AE_BIT, not_exception
- EXCEPTION_EPILOGUE
- rtie
+ btst r10, STATUS_AE_BIT
+ bnz .Lexcep_ret
; Not Exception so maybe Interrupts (Level 1 or 2)
-not_exception:
-
#ifdef CONFIG_ARC_COMPACT_IRQ_LEVELS
; Level 2 interrupt return Path - from hardware standpoint
@@ -377,16 +374,17 @@ not_level2_interrupt:
#endif
- bbit0 r10, STATUS_A1_BIT, not_level1_interrupt
+ bbit0 r10, STATUS_A1_BIT, .Lpure_k_mode_ret
;return from level 1
INTERRUPT_EPILOGUE 1
debug_marker_l1:
rtie
-not_level1_interrupt:
+.Lexcep_ret:
+.Lpure_k_mode_ret:
- ;this case is for syscalls or Exceptions (with fake rtie)
+ ;this case is for syscalls or Exceptions or pure kernel mode
EXCEPTION_EPILOGUE
debug_marker_syscall:
--
1.9.1
next prev parent reply other threads:[~2015-06-07 8:38 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-06-07 8:38 [PATCH 00/19] ARCv2 port to Linux - (A) prepratory patches Vineet Gupta
2015-06-07 8:38 ` [PATCH 01/19] ARC: mm/cache_arc700.c -> mm/cache.c Vineet Gupta
2015-06-07 8:38 ` [PATCH 02/19] ARC: cacheflush: move some code around, delete old comments Vineet Gupta
2015-06-07 8:38 ` [PATCH 03/19] ARC: cacheflush: No need to retain DC_CTRL from __before_dc_op() Vineet Gupta
2015-06-07 8:38 ` [PATCH 04/19] ARC: untangle cache flush loop Vineet Gupta
2015-06-07 8:38 ` [PATCH 05/19] ARC: entry.S: common'ize scrtach reg freeup in intr + exceptions Vineet Gupta
2015-06-07 8:38 ` [PATCH 06/19] ARC: entry.S: Introduce INTERRUPT_{PROLOGUE,EPILOGUE} Vineet Gupta
2015-06-07 8:38 ` [PATCH 07/19] ARC: entry.S: canonical'ize EXCEPTION_{PROLOGUE,EPILOGUE} Vineet Gupta
2015-06-07 8:38 ` [PATCH 08/19] ARC: entry.S: confine EXCEPTION_* macros to one file Vineet Gupta
2015-06-07 8:38 ` [PATCH 09/19] ARC: entry.S: FAKE_RET_FROM_EXCPN can always use r9 Vineet Gupta
2015-06-07 8:38 ` [PATCH 10/19] ARC: entry.S: Trap handler to use r10 for syscall vs. brkpt decision Vineet Gupta
2015-06-07 8:38 ` [PATCH 11/19] ARC: entry.S: comments cleanup Vineet Gupta
2015-06-07 8:38 ` [PATCH 12/19] ARC: entry.S: Ensure that restore_regs is local to compilation unit Vineet Gupta
2015-06-07 8:38 ` [PATCH 13/19] ARC: entry.S: split into ARCompact ISA specific, common bits Vineet Gupta
2015-06-07 8:38 ` [PATCH 14/19] ARC: entry.S: move some code around for cache locality in return path Vineet Gupta
2015-06-07 8:38 ` [PATCH 15/19] ARC: entry.S: micro-optimize Trap handler Vineet Gupta
2015-06-07 8:38 ` Vineet Gupta
2015-06-07 8:38 ` Vineet Gupta [this message]
2015-06-07 8:38 ` [PATCH 16/19] ARC: entry.S: use single EXCEPTION_PROLOGUE Vineet Gupta
2015-06-07 8:38 ` [PATCH 17/19] ARC: entry.S: [arcompact] simplify SWITCH_TO_KERNEL_STK Vineet Gupta
2015-06-07 8:38 ` [PATCH 18/19] ARC: Make way for pt_regs != user_regs_struct Vineet Gupta
2015-06-07 8:38 ` Vineet Gupta
2015-06-07 8:38 ` [PATCH 19/19] ARC: intc: split into ARCompact ISA specific, common bits Vineet Gupta
2015-06-07 8:47 ` [PATCH 00/19] ARCv2 port to Linux - (A) prepratory patches Vineet Gupta
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