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authorMadhavan Srinivasan <maddy@linux.vnet.ibm.com>2017-12-20 06:55:42 +0300
committerMichael Ellerman <mpe@ellerman.id.au>2018-01-19 14:36:56 +0300
commitc2e480ba822718190e58849b79a76db13c3dac18 (patch)
treef76fba08014065ce9ed6b17fc4d59a29424749ba /arch/powerpc/kernel
parenta8a4b03ab95f3e99196b0a4dd40804620ea77e74 (diff)
downloadlinux-c2e480ba822718190e58849b79a76db13c3dac18.tar.xz
powerpc/64: Add #defines for paca->soft_enabled flags
Two #defines IRQS_ENABLED and IRQS_DISABLED are added to be used when updating paca->soft_enabled. Replace the hardcoded values used when updating paca->soft_enabled with IRQ_(EN|DIS)ABLED #define. No logic change. Reviewed-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Madhavan Srinivasan <maddy@linux.vnet.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/kernel')
-rw-r--r--arch/powerpc/kernel/entry_64.S16
-rw-r--r--arch/powerpc/kernel/exceptions-64e.S6
-rw-r--r--arch/powerpc/kernel/head_64.S5
-rw-r--r--arch/powerpc/kernel/idle_book3e.S3
-rw-r--r--arch/powerpc/kernel/idle_power4.S3
-rw-r--r--arch/powerpc/kernel/irq.c9
-rw-r--r--arch/powerpc/kernel/process.c3
-rw-r--r--arch/powerpc/kernel/setup_64.c3
-rw-r--r--arch/powerpc/kernel/time.c2
9 files changed, 29 insertions, 21 deletions
diff --git a/arch/powerpc/kernel/entry_64.S b/arch/powerpc/kernel/entry_64.S
index 371c05fe250a..f8b32224dc11 100644
--- a/arch/powerpc/kernel/entry_64.S
+++ b/arch/powerpc/kernel/entry_64.S
@@ -130,7 +130,7 @@ END_FW_FTR_SECTION_IFSET(FW_FEATURE_SPLPAR)
*/
#if defined(CONFIG_TRACE_IRQFLAGS) && defined(CONFIG_BUG)
lbz r10,PACASOFTIRQEN(r13)
- xori r10,r10,1
+ xori r10,r10,IRQS_ENABLED
1: tdnei r10,0
EMIT_BUG_ENTRY 1b,__FILE__,__LINE__,BUGFLAG_WARNING
#endif
@@ -147,7 +147,7 @@ system_call: /* label this so stack traces look sane */
/* We do need to set SOFTE in the stack frame or the return
* from interrupt will be painful
*/
- li r10,1
+ li r10,IRQS_ENABLED
std r10,SOFTE(r1)
CURRENT_THREAD_INFO(r11, r1)
@@ -743,7 +743,7 @@ resume_kernel:
lwz r8,TI_PREEMPT(r9)
cmpwi cr1,r8,0
ld r0,SOFTE(r1)
- cmpdi r0,0
+ cmpdi r0,IRQS_DISABLED
crandc eq,cr1*4+eq,eq
bne restore
@@ -783,11 +783,11 @@ restore:
*/
ld r5,SOFTE(r1)
lbz r6,PACASOFTIRQEN(r13)
- cmpwi cr0,r5,0
+ cmpwi cr0,r5,IRQS_DISABLED
beq .Lrestore_irq_off
/* We are enabling, were we already enabled ? Yes, just return */
- cmpwi cr0,r6,1
+ cmpwi cr0,r6,IRQS_ENABLED
beq cr0,.Ldo_restore
/*
@@ -806,7 +806,7 @@ restore:
*/
.Lrestore_no_replay:
TRACE_ENABLE_INTS
- li r0,1
+ li r0,IRQS_ENABLED
stb r0,PACASOFTIRQEN(r13);
/*
@@ -915,7 +915,7 @@ END_FTR_SECTION_IFSET(CPU_FTR_HAS_PPR)
#if defined(CONFIG_TRACE_IRQFLAGS) && defined(CONFIG_BUG)
/* The interrupt should not have soft enabled. */
lbz r7,PACASOFTIRQEN(r13)
-1: tdnei r7,0
+1: tdnei r7,IRQS_DISABLED
EMIT_BUG_ENTRY 1b,__FILE__,__LINE__,BUGFLAG_WARNING
#endif
b .Ldo_restore
@@ -1036,7 +1036,7 @@ _GLOBAL(enter_rtas)
* check it with the asm equivalent of WARN_ON
*/
lbz r0,PACASOFTIRQEN(r13)
-1: tdnei r0,0
+1: tdnei r0,IRQS_DISABLED
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 acd8ca76233e..80cc91bbcf1a 100644
--- a/arch/powerpc/kernel/exceptions-64e.S
+++ b/arch/powerpc/kernel/exceptions-64e.S
@@ -210,9 +210,9 @@ END_FTR_SECTION_IFSET(CPU_FTR_EMB_HV)
ld r5,SOFTE(r1)
/* Interrupts had better not already be enabled... */
- twnei r6,0
+ twnei r6,IRQS_DISABLED
- cmpwi cr0,r5,0
+ cmpwi cr0,r5,IRQS_DISABLED
beq 1f
TRACE_ENABLE_INTS
@@ -352,7 +352,7 @@ ret_from_mc_except:
#define PROLOG_ADDITION_MASKABLE_GEN(n) \
lbz r10,PACASOFTIRQEN(r13); /* are irqs soft-disabled ? */ \
- cmpwi cr0,r10,0; /* yes -> go out of line */ \
+ cmpwi cr0,r10,IRQS_DISABLED; /* yes -> go out of line */ \
beq masked_interrupt_book3e_##n
#define PROLOG_ADDITION_2REGS_GEN(n) \
diff --git a/arch/powerpc/kernel/head_64.S b/arch/powerpc/kernel/head_64.S
index aa71a90f5222..0deef350004f 100644
--- a/arch/powerpc/kernel/head_64.S
+++ b/arch/powerpc/kernel/head_64.S
@@ -765,7 +765,7 @@ _GLOBAL(pmac_secondary_start)
/* Mark interrupts soft and hard disabled (they might be enabled
* in the PACA when doing hotplug)
*/
- li r0,0
+ li r0,IRQS_DISABLED
stb r0,PACASOFTIRQEN(r13)
li r0,PACA_IRQ_HARD_DIS
stb r0,PACAIRQHAPPENED(r13)
@@ -822,6 +822,7 @@ __secondary_start:
/* Mark interrupts soft and hard disabled (they might be enabled
* in the PACA when doing hotplug)
*/
+ li r7,IRQS_DISABLED
stb r7,PACASOFTIRQEN(r13)
li r0,PACA_IRQ_HARD_DIS
stb r0,PACAIRQHAPPENED(r13)
@@ -988,7 +989,7 @@ start_here_common:
/* Mark interrupts soft and hard disabled (they might be enabled
* in the PACA when doing hotplug)
*/
- li r0,0
+ li r0,IRQS_DISABLED
stb r0,PACASOFTIRQEN(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 48c21acef915..1bb1d152aa46 100644
--- a/arch/powerpc/kernel/idle_book3e.S
+++ b/arch/powerpc/kernel/idle_book3e.S
@@ -17,6 +17,7 @@
#include <asm/processor.h>
#include <asm/thread_info.h>
#include <asm/epapr_hcalls.h>
+#include <asm/hw_irq.h>
/* 64-bit version only for now */
#ifdef CONFIG_PPC64
@@ -46,7 +47,7 @@ _GLOBAL(\name)
bl trace_hardirqs_on
addi r1,r1,128
#endif
- li r0,1
+ li r0,IRQS_ENABLED
stb r0,PACASOFTIRQEN(r13)
/* Interrupts will make use return to LR, so get something we want
diff --git a/arch/powerpc/kernel/idle_power4.S b/arch/powerpc/kernel/idle_power4.S
index f57a19348bdd..8b4702d93701 100644
--- a/arch/powerpc/kernel/idle_power4.S
+++ b/arch/powerpc/kernel/idle_power4.S
@@ -15,6 +15,7 @@
#include <asm/ppc_asm.h>
#include <asm/asm-offsets.h>
#include <asm/irqflags.h>
+#include <asm/hw_irq.h>
#undef DEBUG
@@ -53,7 +54,7 @@ END_FTR_SECTION_IFCLR(CPU_FTR_CAN_NAP)
mfmsr r7
#endif /* CONFIG_TRACE_IRQFLAGS */
- li r0,1
+ li r0,IRQS_ENABLED
stb r0,PACASOFTIRQEN(r13) /* we'll hard-enable shortly */
BEGIN_FTR_SECTION
DSSALL
diff --git a/arch/powerpc/kernel/irq.c b/arch/powerpc/kernel/irq.c
index b7a84522e652..483a9206554f 100644
--- a/arch/powerpc/kernel/irq.c
+++ b/arch/powerpc/kernel/irq.c
@@ -67,6 +67,7 @@
#include <asm/smp.h>
#include <asm/livepatch.h>
#include <asm/asm-prototypes.h>
+#include <asm/hw_irq.h>
#ifdef CONFIG_PPC64
#include <asm/paca.h>
@@ -231,7 +232,7 @@ notrace void arch_local_irq_restore(unsigned long en)
/* Write the new soft-enabled value */
set_soft_enabled(en);
- if (!en)
+ if (en == IRQS_DISABLED)
return;
/*
* From this point onward, we can take interrupts, preempt,
@@ -276,7 +277,7 @@ notrace void arch_local_irq_restore(unsigned long en)
}
#endif /* CONFIG_TRACE_IRQFLAGS */
- set_soft_enabled(0);
+ set_soft_enabled(IRQS_DISABLED);
trace_hardirqs_off();
/*
@@ -288,7 +289,7 @@ notrace void arch_local_irq_restore(unsigned long en)
/* We can soft-enable now */
trace_hardirqs_on();
- set_soft_enabled(1);
+ set_soft_enabled(IRQS_ENABLED);
/*
* And replay if we have to. This will return with interrupts
@@ -363,7 +364,7 @@ bool prep_irq_for_idle(void)
* of entering the low power state.
*/
local_paca->irq_happened &= ~PACA_IRQ_HARD_DIS;
- local_paca->soft_enabled = 1;
+ local_paca->soft_enabled = IRQS_ENABLED;
/* Tell the caller to enter the low power state */
return true;
diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel/process.c
index bcd4441304a5..1563d1190da3 100644
--- a/arch/powerpc/kernel/process.c
+++ b/arch/powerpc/kernel/process.c
@@ -57,6 +57,7 @@
#include <asm/debug.h>
#ifdef CONFIG_PPC64
#include <asm/firmware.h>
+#include <asm/hw_irq.h>
#endif
#include <asm/code-patching.h>
#include <asm/exec.h>
@@ -1674,7 +1675,7 @@ int copy_thread(unsigned long clone_flags, unsigned long usp,
childregs->gpr[14] = ppc_function_entry((void *)usp);
#ifdef CONFIG_PPC64
clear_tsk_thread_flag(p, TIF_32BIT);
- childregs->softe = 1;
+ childregs->softe = IRQS_ENABLED;
#endif
childregs->gpr[15] = kthread_arg;
p->thread.regs = NULL; /* no user register state */
diff --git a/arch/powerpc/kernel/setup_64.c b/arch/powerpc/kernel/setup_64.c
index 8f285d6a3db1..2fd4e167ef09 100644
--- a/arch/powerpc/kernel/setup_64.c
+++ b/arch/powerpc/kernel/setup_64.c
@@ -66,6 +66,7 @@
#include <asm/livepatch.h>
#include <asm/opal.h>
#include <asm/cputhreads.h>
+#include <asm/hw_irq.h>
#include "setup.h"
@@ -187,6 +188,8 @@ static void __init fixup_boot_paca(void)
get_paca()->cpu_start = 1;
/* Allow percpu accesses to work until we setup percpu data */
get_paca()->data_offset = 0;
+ /* Mark interrupts disabled in PACA */
+ get_paca()->soft_enabled = IRQS_DISABLED;
}
static void __init configure_exceptions(void)
diff --git a/arch/powerpc/kernel/time.c b/arch/powerpc/kernel/time.c
index fe6f3a285455..070092b1ba8a 100644
--- a/arch/powerpc/kernel/time.c
+++ b/arch/powerpc/kernel/time.c
@@ -253,7 +253,7 @@ void accumulate_stolen_time(void)
* needs to reflect that so various debug stuff doesn't
* complain
*/
- local_paca->soft_enabled = 0;
+ local_paca->soft_enabled = IRQS_DISABLED;
sst = scan_dispatch_log(acct->starttime_user);
ust = scan_dispatch_log(acct->starttime);