powerpc/64: Rename soft_enabled to irq_soft_mask

Rename the paca->soft_enabled to paca->irq_soft_mask as it is no
longer used as a flag for interrupt state, but a mask.

Signed-off-by: Madhavan Srinivasan <maddy@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

11 files changed, 29 insertions, 42 deletions

diff --git a/arch/powerpc/kernel/asm-offsets.c b/arch/powerpc/kernel/asm-offsets.c
index 3f6316bcde4e..43a6967d48ad 100644
--- a/arch/powerpc/kernel/asm-offsets.c
+++ b/arch/powerpc/kernel/asm-offsets.c
@@ -178,7 +178,7 @@ int main(void)
 	OFFSET(PACATOC, paca_struct, kernel_toc);
 	OFFSET(PACAKBASE, paca_struct, kernelbase);
 	OFFSET(PACAKMSR, paca_struct, kernel_msr);
-	OFFSET(PACASOFTIRQEN, paca_struct, soft_enabled);
+	OFFSET(PACAIRQSOFTMASK, paca_struct, irq_soft_mask);
 	OFFSET(PACAIRQHAPPENED, paca_struct, irq_happened);
 #ifdef CONFIG_PPC_BOOK3S
 	OFFSET(PACACONTEXTID, paca_struct, mm_ctx_id);
diff --git a/arch/powerpc/kernel/entry_64.S b/arch/powerpc/kernel/entry_64.S
index 51e4cc4dba4a..7c51f022d0de 100644
--- a/arch/powerpc/kernel/entry_64.S
+++ b/arch/powerpc/kernel/entry_64.S
@@ -129,7 +129,7 @@ END_FW_FTR_SECTION_IFSET(FW_FEATURE_SPLPAR)
 	 * is correct
 	 */
 #if defined(CONFIG_TRACE_IRQFLAGS) && defined(CONFIG_BUG)
-	lbz	r10,PACASOFTIRQEN(r13)
+	lbz	r10,PACAIRQSOFTMASK(r13)
 1:	tdnei	r10,IRQS_ENABLED
 	EMIT_BUG_ENTRY 1b,__FILE__,__LINE__,BUGFLAG_WARNING
 #endif
@@ -781,7 +781,7 @@ restore:
 	 * are about to re-enable interrupts
 	 */
 	ld	r5,SOFTE(r1)
-	lbz	r6,PACASOFTIRQEN(r13)
+	lbz	r6,PACAIRQSOFTMASK(r13)
 	andi.	r5,r5,IRQS_DISABLED
 	bne	.Lrestore_irq_off
 
@@ -806,7 +806,7 @@ restore:
 .Lrestore_no_replay:
 	TRACE_ENABLE_INTS
 	li	r0,IRQS_ENABLED
-	stb	r0,PACASOFTIRQEN(r13);
+	stb	r0,PACAIRQSOFTMASK(r13);
 
 	/*
 	 * Final return path. BookE is handled in a different file
@@ -913,8 +913,8 @@ END_FTR_SECTION_IFSET(CPU_FTR_HAS_PPR)
 1:
 #if defined(CONFIG_TRACE_IRQFLAGS) && defined(CONFIG_BUG)
 	/* The interrupt should not have soft enabled. */
-	lbz	r7,PACASOFTIRQEN(r13)
-1:	tdnei	r7,IRQS_DISABLED
+	lbz	r7,PACAIRQSOFTMASK(r13)
+1:	tdeqi	r7,IRQS_ENABLED
 	EMIT_BUG_ENTRY 1b,__FILE__,__LINE__,BUGFLAG_WARNING
 #endif
 	b	.Ldo_restore
@@ -1034,7 +1034,7 @@ _GLOBAL(enter_rtas)
 	/* There is no way it is acceptable to get here with interrupts enabled,
 	 * check it with the asm equivalent of WARN_ON
 	 */
-	lbz	r0,PACASOFTIRQEN(r13)
+	lbz	r0,PACAIRQSOFTMASK(r13)
 1:	tdeqi	r0,IRQS_ENABLED
 	EMIT_BUG_ENTRY 1b,__FILE__,__LINE__,BUGFLAG_WARNING
 #endif
diff --git a/arch/powerpc/kernel/exceptions-64e.S b/arch/powerpc/kernel/exceptions-64e.S
index 9216ece7672c..ee832d344a5a 100644
--- a/arch/powerpc/kernel/exceptions-64e.S
+++ b/arch/powerpc/kernel/exceptions-64e.S
@@ -139,7 +139,7 @@ END_FTR_SECTION_IFSET(CPU_FTR_EMB_HV)
 	mfspr	r10,SPRN_ESR
 	SPECIAL_EXC_STORE(r10,ESR)
 
-	lbz	r10,PACASOFTIRQEN(r13)
+	lbz	r10,PACAIRQSOFTMASK(r13)
 	SPECIAL_EXC_STORE(r10,SOFTE)
 	ld	r10,_NIP(r1)
 	SPECIAL_EXC_STORE(r10,CSRR0)
@@ -206,7 +206,7 @@ BEGIN_FTR_SECTION
 	mtspr	SPRN_MAS8,r10
 END_FTR_SECTION_IFSET(CPU_FTR_EMB_HV)
 
-	lbz	r6,PACASOFTIRQEN(r13)
+	lbz	r6,PACAIRQSOFTMASK(r13)
 	ld	r5,SOFTE(r1)
 
 	/* Interrupts had better not already be enabled... */
@@ -216,7 +216,7 @@ END_FTR_SECTION_IFSET(CPU_FTR_EMB_HV)
 	bne	1f
 
 	TRACE_ENABLE_INTS
-	stb	r5,PACASOFTIRQEN(r13)
+	stb	r5,PACAIRQSOFTMASK(r13)
 1:
 	/*
 	 * Restore PACAIRQHAPPENED rather than setting it based on
@@ -351,7 +351,7 @@ ret_from_mc_except:
 #define PROLOG_ADDITION_NONE_MC(n)
 
 #define PROLOG_ADDITION_MASKABLE_GEN(n)					    \
-	lbz	r10,PACASOFTIRQEN(r13); /* are irqs soft-disabled ? */	    \
+	lbz	r10,PACAIRQSOFTMASK(r13);	/* are irqs soft-masked? */ \
 	andi.	r10,r10,IRQS_DISABLED;	/* yes -> go out of line */ \
 	bne	masked_interrupt_book3e_##n
 
@@ -397,7 +397,7 @@ exc_##n##_common:							    \
 	mfspr	r8,SPRN_XER;		/* save XER in stackframe */	    \
 	ld	r9,excf+EX_R1(r13);	/* load orig r1 back from PACA */   \
 	lwz	r10,excf+EX_CR(r13);	/* load orig CR back from PACA	*/  \
-	lbz	r11,PACASOFTIRQEN(r13);	/* get current IRQ softe */	    \
+	lbz	r11,PACAIRQSOFTMASK(r13); /* get current IRQ softe */	    \
 	ld	r12,exception_marker@toc(r2);				    \
 	li	r0,0;							    \
 	std	r3,GPR10(r1);		/* save r10 to stackframe */	    \
diff --git a/arch/powerpc/kernel/head_64.S b/arch/powerpc/kernel/head_64.S
index 0deef350004f..a61151a6ea5e 100644
--- a/arch/powerpc/kernel/head_64.S
+++ b/arch/powerpc/kernel/head_64.S
@@ -766,7 +766,7 @@ _GLOBAL(pmac_secondary_start)
 	 * in the PACA when doing hotplug)
 	 */
 	li	r0,IRQS_DISABLED
-	stb	r0,PACASOFTIRQEN(r13)
+	stb	r0,PACAIRQSOFTMASK(r13)
 	li	r0,PACA_IRQ_HARD_DIS
 	stb	r0,PACAIRQHAPPENED(r13)
 
@@ -823,7 +823,7 @@ __secondary_start:
 	 * in the PACA when doing hotplug)
 	 */
 	li	r7,IRQS_DISABLED
-	stb	r7,PACASOFTIRQEN(r13)
+	stb	r7,PACAIRQSOFTMASK(r13)
 	li	r0,PACA_IRQ_HARD_DIS
 	stb	r0,PACAIRQHAPPENED(r13)
 
@@ -990,7 +990,7 @@ start_here_common:
 	 * in the PACA when doing hotplug)
 	 */
 	li	r0,IRQS_DISABLED
-	stb	r0,PACASOFTIRQEN(r13)
+	stb	r0,PACAIRQSOFTMASK(r13)
 	li	r0,PACA_IRQ_HARD_DIS
 	stb	r0,PACAIRQHAPPENED(r13)
 
diff --git a/arch/powerpc/kernel/idle_book3e.S b/arch/powerpc/kernel/idle_book3e.S
index 1bb1d152aa46..2b269315d377 100644
--- a/arch/powerpc/kernel/idle_book3e.S
+++ b/arch/powerpc/kernel/idle_book3e.S
@@ -48,7 +48,7 @@ _GLOBAL(\name)
 	addi    r1,r1,128
 #endif
 	li	r0,IRQS_ENABLED
-	stb	r0,PACASOFTIRQEN(r13)
+	stb	r0,PACAIRQSOFTMASK(r13)
 	
 	/* Interrupts will make use return to LR, so get something we want
 	 * in there
diff --git a/arch/powerpc/kernel/idle_power4.S b/arch/powerpc/kernel/idle_power4.S
index 8b4702d93701..08faa93755f9 100644
--- a/arch/powerpc/kernel/idle_power4.S
+++ b/arch/powerpc/kernel/idle_power4.S
@@ -55,7 +55,7 @@ END_FTR_SECTION_IFCLR(CPU_FTR_CAN_NAP)
 #endif /* CONFIG_TRACE_IRQFLAGS */
 
 	li	r0,IRQS_ENABLED
-	stb	r0,PACASOFTIRQEN(r13)	/* we'll hard-enable shortly */
+	stb	r0,PACAIRQSOFTMASK(r13)	/* we'll hard-enable shortly */
 BEGIN_FTR_SECTION
 	DSSALL
 	sync
diff --git a/arch/powerpc/kernel/irq.c b/arch/powerpc/kernel/irq.c
index 406c4329b535..e137b98dc5f8 100644
--- a/arch/powerpc/kernel/irq.c
+++ b/arch/powerpc/kernel/irq.c
@@ -225,22 +225,9 @@ notrace void arch_local_irq_restore(unsigned long mask)
 	unsigned int replay;
 
 	/* Write the new soft-enabled value */
-	soft_enabled_set(mask);
-	if (mask) {
-#ifdef CONFIG_TRACE_IRQFLAGS
-		/*
-		 * mask must always include LINUX bit if any
-		 * are set, and interrupts don't get replayed until
-		 * the Linux interrupt is unmasked. This could be
-		 * changed to replay partial unmasks in future,
-		 * which would allow Linux masks to nest inside
-		 * other masks, among other things. For now, be very
-		 * dumb and simple.
-		 */
-		WARN_ON(!(mask & IRQS_DISABLED));
-#endif
+	irq_soft_mask_set(mask);
+	if (mask)
 		return;
-	}
 
 	/*
 	 * From this point onward, we can take interrupts, preempt,
@@ -285,7 +272,7 @@ notrace void arch_local_irq_restore(unsigned long mask)
 	}
 #endif /* CONFIG_TRACE_IRQFLAGS */
 
-	soft_enabled_set(IRQS_DISABLED);
+	irq_soft_mask_set(IRQS_DISABLED);
 	trace_hardirqs_off();
 
 	/*
@@ -297,7 +284,7 @@ notrace void arch_local_irq_restore(unsigned long mask)
 
 	/* We can soft-enable now */
 	trace_hardirqs_on();
-	soft_enabled_set(IRQS_ENABLED);
+	irq_soft_mask_set(IRQS_ENABLED);
 
 	/*
 	 * And replay if we have to. This will return with interrupts
@@ -372,7 +359,7 @@ bool prep_irq_for_idle(void)
 	 * of entering the low power state.
 	 */
 	local_paca->irq_happened &= ~PACA_IRQ_HARD_DIS;
-	soft_enabled_set(IRQS_ENABLED);
+	irq_soft_mask_set(IRQS_ENABLED);
 
 	/* Tell the caller to enter the low power state */
 	return true;
diff --git a/arch/powerpc/kernel/optprobes_head.S b/arch/powerpc/kernel/optprobes_head.S
index 52fc864cdec4..98a3aeeb3c8c 100644
--- a/arch/powerpc/kernel/optprobes_head.S
+++ b/arch/powerpc/kernel/optprobes_head.S
@@ -58,7 +58,7 @@ optprobe_template_entry:
 	std	r5,_XER(r1)
 	mfcr	r5
 	std	r5,_CCR(r1)
-	lbz     r5,PACASOFTIRQEN(r13)
+	lbz     r5,PACAIRQSOFTMASK(r13)
 	std     r5,SOFTE(r1)
 
 	/*
diff --git a/arch/powerpc/kernel/ptrace.c b/arch/powerpc/kernel/ptrace.c
index bd2c49475473..aef08e579946 100644
--- a/arch/powerpc/kernel/ptrace.c
+++ b/arch/powerpc/kernel/ptrace.c
@@ -285,7 +285,7 @@ int ptrace_get_reg(struct task_struct *task, int regno, unsigned long *data)
 
 #ifdef CONFIG_PPC64
 	/*
-	 * softe copies paca->soft_enabled variable state. Since soft_enabled is
+	 * softe copies paca->irq_soft_mask variable state. Since irq_soft_mask is
 	 * no more used as a flag, lets force usr to alway see the softe value as 1
 	 * which means interrupts are not soft disabled.
 	 */
diff --git a/arch/powerpc/kernel/setup_64.c b/arch/powerpc/kernel/setup_64.c
index f6bedebda90a..896dacef2f2d 100644
--- a/arch/powerpc/kernel/setup_64.c
+++ b/arch/powerpc/kernel/setup_64.c
@@ -189,7 +189,7 @@ static void __init fixup_boot_paca(void)
 	/* Allow percpu accesses to work until we setup percpu data */
 	get_paca()->data_offset = 0;
 	/* Mark interrupts disabled in PACA */
-	soft_enabled_set(IRQS_DISABLED);
+	irq_soft_mask_set(IRQS_DISABLED);
 }
 
 static void __init configure_exceptions(void)
@@ -352,7 +352,7 @@ void __init early_setup(unsigned long dt_ptr)
 void early_setup_secondary(void)
 {
 	/* Mark interrupts disabled in PACA */
-	soft_enabled_set(IRQS_DISABLED);
+	irq_soft_mask_set(IRQS_DISABLED);
 
 	/* Initialize the hash table or TLB handling */
 	early_init_mmu_secondary();
diff --git a/arch/powerpc/kernel/time.c b/arch/powerpc/kernel/time.c
index daa6e9e35ab9..a32823dcd9a4 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;
-	unsigned long save_soft_enabled = soft_enabled_return();
+	unsigned long save_irq_soft_mask = irq_soft_mask_return();
 	struct cpu_accounting_data *acct = &local_paca->accounting;
 
 	/* We are called early in the exception entry, before
@@ -253,7 +253,7 @@ void accumulate_stolen_time(void)
 	 * needs to reflect that so various debug stuff doesn't
 	 * complain
 	 */
-	soft_enabled_set(IRQS_DISABLED);
+	irq_soft_mask_set(IRQS_DISABLED);
 
 	sst = scan_dispatch_log(acct->starttime_user);
 	ust = scan_dispatch_log(acct->starttime);
@@ -261,7 +261,7 @@ void accumulate_stolen_time(void)
 	acct->utime -= ust;
 	acct->steal_time += ust + sst;
 
-	soft_enabled_set(save_soft_enabled);
+	irq_soft_mask_set(save_irq_soft_mask);
 }
 
 static inline u64 calculate_stolen_time(u64 stop_tb)