From: Madhavan Srinivasan <maddy@linux.vnet.ibm.com>
To: mpe@ellerman.id.au
Cc: benh@kernel.crashing.org, anton@samba.org, paulus@samba.org,
npiggin@gmail.com, linuxppc-dev@lists.ozlabs.org,
Madhavan Srinivasan <maddy@linux.vnet.ibm.com>
Subject: [PATCH v10 06/17] powerpc/64: Implement and use soft_enabled_return API
Date: Wed, 20 Dec 2017 09:25:46 +0530 [thread overview]
Message-ID: <1513742157-28768-7-git-send-email-maddy@linux.vnet.ibm.com> (raw)
In-Reply-To: <1513742157-28768-1-git-send-email-maddy@linux.vnet.ibm.com>
Add a new wrapper function, soft_enabled_return(), added to return
paca->soft_enabled value.
Signed-off-by: Madhavan Srinivasan <maddy@linux.vnet.ibm.com>
---
arch/powerpc/include/asm/hw_irq.h | 21 +++++++++++++--------
arch/powerpc/kernel/time.c | 2 +-
2 files changed, 14 insertions(+), 9 deletions(-)
diff --git a/arch/powerpc/include/asm/hw_irq.h b/arch/powerpc/include/asm/hw_irq.h
index 6441a0498234..fbffeecb913f 100644
--- a/arch/powerpc/include/asm/hw_irq.h
+++ b/arch/powerpc/include/asm/hw_irq.h
@@ -49,6 +49,18 @@ extern void unknown_exception(struct pt_regs *regs);
#ifdef CONFIG_PPC64
#include <asm/paca.h>
+static inline notrace unsigned long soft_enabled_return(void)
+{
+ unsigned long flags;
+
+ asm volatile(
+ "lbz %0,%1(13)"
+ : "=r" (flags)
+ : "i" (offsetof(struct paca_struct, soft_enabled)));
+
+ return flags;
+}
+
/*
* The "memory" clobber acts as both a compiler barrier
* for the critical section and as a clobber because
@@ -66,14 +78,7 @@ static inline notrace void soft_enabled_set(unsigned long enable)
static inline unsigned long arch_local_save_flags(void)
{
- unsigned long flags;
-
- asm volatile(
- "lbz %0,%1(13)"
- : "=r" (flags)
- : "i" (offsetof(struct paca_struct, soft_enabled)));
-
- return flags;
+ return soft_enabled_return();
}
static inline void arch_local_irq_disable(void)
diff --git a/arch/powerpc/kernel/time.c b/arch/powerpc/kernel/time.c
index f1ecf40fc6c1..9b483520c010 100644
--- a/arch/powerpc/kernel/time.c
+++ b/arch/powerpc/kernel/time.c
@@ -244,7 +244,7 @@ static u64 scan_dispatch_log(u64 stop_tb)
void accumulate_stolen_time(void)
{
u64 sst, ust;
- u8 save_soft_enabled = local_paca->soft_enabled;
+ unsigned long save_soft_enabled = soft_enabled_return();
struct cpu_accounting_data *acct = &local_paca->accounting;
/* We are called early in the exception entry, before
--
2.7.4
next prev parent reply other threads:[~2017-12-20 3:56 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-12-20 3:55 [PATCH v10 00/17] powerpc: "paca->soft_enabled" based local atomic operation implementation Madhavan Srinivasan
2017-12-20 3:55 ` [PATCH v10 01/17] powerpc/64: do not trace irqs-off at interrupt return to soft-disabled context Madhavan Srinivasan
2017-12-20 3:55 ` [PATCH v10 02/17] powerpc/64: Add #defines for paca->soft_enabled flags Madhavan Srinivasan
2018-01-22 3:34 ` [v10, " Michael Ellerman
2017-12-20 3:55 ` [PATCH v10 03/17] powerpc/64: Improve inline asm in arch_local_irq_disable Madhavan Srinivasan
2017-12-20 3:55 ` [PATCH v10 04/17] powerpc/64: Fix arch_local_irq_disable() prototype Madhavan Srinivasan
2017-12-20 3:55 ` [PATCH v10 05/17] powerpc/64: move set_soft_enabled(), rename it, add memory clobber Madhavan Srinivasan
2017-12-20 3:55 ` Madhavan Srinivasan [this message]
2017-12-20 3:55 ` [PATCH v10 07/17] powerpc/64: Implement and use soft_enabled_set_return API Madhavan Srinivasan
2017-12-20 3:55 ` [PATCH v10 08/17] powerpc/64: Cleanup hard_irq_disable() macro Madhavan Srinivasan
2017-12-20 3:55 ` [PATCH v10 09/17] powerpc/64: Change soft_enabled from flag to bitmask Madhavan Srinivasan
2017-12-20 3:55 ` [PATCH v10 10/17] powerpc/64: Rename soft_enabled to irq_soft_mask Madhavan Srinivasan
2017-12-20 3:55 ` [PATCH v10 11/17] powerpc/64s: Avoid using EXCEPTION_PROLOG_1 macro in MASKABLE_* Madhavan Srinivasan
2017-12-20 3:55 ` [PATCH v10 12/17] powerpc/64s: Add support to take additional parameter in MASKABLE_* macro Madhavan Srinivasan
2017-12-20 3:55 ` [PATCH v10 13/17] powerpc/64s: Add support to mask perf interrupts and replay them Madhavan Srinivasan
2018-01-15 13:23 ` Nicholas Piggin
2017-12-20 3:55 ` [PATCH v10 14/17] powerpc: Add new kconfig IRQ_DEBUG_SUPPORT Madhavan Srinivasan
2017-12-20 3:55 ` [PATCH v10 15/17] powerpc/64s: Add new set of irq_soft_mask_ functions for PMI masking Madhavan Srinivasan
2017-12-20 3:55 ` [PATCH v10 16/17] powerpc: use generic atomic implementation for local_t Madhavan Srinivasan
2017-12-20 3:55 ` [PATCH v10 17/17] powerpc/64s: Implement local_t using irq soft masking Madhavan Srinivasan
2017-12-20 5:02 ` [PATCH v10 00/17] powerpc: "paca->soft_enabled" based local atomic operation implementation Nicholas Piggin
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