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-rw-r--r--arch/parisc/include/asm/assembly.h1
-rw-r--r--arch/parisc/include/asm/hardirq.h7
-rw-r--r--arch/parisc/include/asm/processor.h21
-rw-r--r--arch/parisc/kernel/entry.S19
-rw-r--r--arch/parisc/kernel/hardware.c1
-rw-r--r--arch/parisc/kernel/irq.c49
-rw-r--r--arch/parisc/kernel/pacache.S12
-rw-r--r--arch/parisc/kernel/traps.c1
-rw-r--r--arch/parisc/kernel/unaligned.c3
9 files changed, 57 insertions, 57 deletions
diff --git a/arch/parisc/include/asm/assembly.h b/arch/parisc/include/asm/assembly.h
index 89fb40005e3f..0da848232344 100644
--- a/arch/parisc/include/asm/assembly.h
+++ b/arch/parisc/include/asm/assembly.h
@@ -438,7 +438,6 @@
SAVE_SP (%sr4, PT_SR4 (\regs))
SAVE_SP (%sr5, PT_SR5 (\regs))
SAVE_SP (%sr6, PT_SR6 (\regs))
- SAVE_SP (%sr7, PT_SR7 (\regs))
SAVE_CR (%cr17, PT_IASQ0(\regs))
mtctl %r0, %cr17
diff --git a/arch/parisc/include/asm/hardirq.h b/arch/parisc/include/asm/hardirq.h
index c19f7138ba48..241c34518465 100644
--- a/arch/parisc/include/asm/hardirq.h
+++ b/arch/parisc/include/asm/hardirq.h
@@ -17,17 +17,14 @@
typedef struct {
unsigned int __softirq_pending;
-#ifdef CONFIG_DEBUG_STACKOVERFLOW
unsigned int kernel_stack_usage;
-#ifdef CONFIG_IRQSTACKS
unsigned int irq_stack_usage;
- unsigned int irq_stack_counter;
-#endif
-#endif
#ifdef CONFIG_SMP
unsigned int irq_resched_count;
unsigned int irq_call_count;
#endif
+ unsigned int irq_unaligned_count;
+ unsigned int irq_fpassist_count;
unsigned int irq_tlb_count;
} ____cacheline_aligned irq_cpustat_t;
diff --git a/arch/parisc/include/asm/processor.h b/arch/parisc/include/asm/processor.h
index cfbc43929cf6..cc2290a3cace 100644
--- a/arch/parisc/include/asm/processor.h
+++ b/arch/parisc/include/asm/processor.h
@@ -17,7 +17,6 @@
#include <asm/ptrace.h>
#include <asm/types.h>
#include <asm/percpu.h>
-
#endif /* __ASSEMBLY__ */
/*
@@ -59,26 +58,6 @@
#ifndef __ASSEMBLY__
/*
- * IRQ STACK - used for irq handler
- */
-#ifdef __KERNEL__
-
-#include <linux/spinlock_types.h>
-
-#define IRQ_STACK_SIZE (4096 << 2) /* 16k irq stack size */
-
-union irq_stack_union {
- unsigned long stack[IRQ_STACK_SIZE/sizeof(unsigned long)];
- raw_spinlock_t lock;
-};
-
-DECLARE_PER_CPU(union irq_stack_union, irq_stack_union);
-
-void call_on_stack(unsigned long p1, void *func, unsigned long new_stack);
-
-#endif /* __KERNEL__ */
-
-/*
* Data detected about CPUs at boot time which is the same for all CPU's.
* HP boxes are SMP - ie identical processors.
*
diff --git a/arch/parisc/kernel/entry.S b/arch/parisc/kernel/entry.S
index ae27cb6ce19a..e8f07dd28401 100644
--- a/arch/parisc/kernel/entry.S
+++ b/arch/parisc/kernel/entry.S
@@ -65,15 +65,11 @@
rsm PSW_SM_I, %r0 /* barrier for "Relied upon Translation */
mtsp %r0, %sr4
mtsp %r0, %sr5
- mfsp %sr7, %r1
- or,= %r0,%r1,%r0 /* Only save sr7 in sr3 if sr7 != 0 */
- mtsp %r1, %sr3
+ mtsp %r0, %sr6
tovirt_r1 %r29
load32 KERNEL_PSW, %r1
rsm PSW_SM_QUIET,%r0 /* second "heavy weight" ctl op */
- mtsp %r0, %sr6
- mtsp %r0, %sr7
mtctl %r0, %cr17 /* Clear IIASQ tail */
mtctl %r0, %cr17 /* Clear IIASQ head */
mtctl %r1, %ipsw
@@ -119,17 +115,20 @@
/* we save the registers in the task struct */
+ copy %r30, %r17
mfctl %cr30, %r1
+ ldo THREAD_SZ_ALGN(%r1), %r30
+ mtsp %r0,%sr7
+ mtsp %r16,%sr3
tophys %r1,%r9
LDREG TI_TASK(%r9), %r1 /* thread_info -> task_struct */
tophys %r1,%r9
ldo TASK_REGS(%r9),%r9
- STREG %r30, PT_GR30(%r9)
+ STREG %r17,PT_GR30(%r9)
STREG %r29,PT_GR29(%r9)
STREG %r26,PT_GR26(%r9)
+ STREG %r16,PT_SR7(%r9)
copy %r9,%r29
- mfctl %cr30, %r1
- ldo THREAD_SZ_ALGN(%r1), %r30
.endm
.macro get_stack_use_r30
@@ -137,10 +136,12 @@
/* we put a struct pt_regs on the stack and save the registers there */
tophys %r30,%r9
- STREG %r30,PT_GR30(%r9)
+ copy %r30,%r1
ldo PT_SZ_ALGN(%r30),%r30
+ STREG %r1,PT_GR30(%r9)
STREG %r29,PT_GR29(%r9)
STREG %r26,PT_GR26(%r9)
+ STREG %r16,PT_SR7(%r9)
copy %r9,%r29
.endm
diff --git a/arch/parisc/kernel/hardware.c b/arch/parisc/kernel/hardware.c
index f7752f6af29e..9e2d2e408529 100644
--- a/arch/parisc/kernel/hardware.c
+++ b/arch/parisc/kernel/hardware.c
@@ -222,6 +222,7 @@ static struct hp_hardware hp_hardware_list[] = {
{HPHW_NPROC,0x5DD,0x4,0x81,"Duet W2"},
{HPHW_NPROC,0x5DE,0x4,0x81,"Piccolo W+"},
{HPHW_NPROC,0x5DF,0x4,0x81,"Cantata W2"},
+ {HPHW_NPROC,0x5DF,0x0,0x00,"Marcato W+? (rp5470)"},
{HPHW_NPROC,0x5E0,0x4,0x91,"Cantata DC- W2"},
{HPHW_NPROC,0x5E1,0x4,0x91,"Crescendo DC- W2"},
{HPHW_NPROC,0x5E2,0x4,0x91,"Crescendo 650 W2"},
diff --git a/arch/parisc/kernel/irq.c b/arch/parisc/kernel/irq.c
index 55237a70e197..2e6443b1e922 100644
--- a/arch/parisc/kernel/irq.c
+++ b/arch/parisc/kernel/irq.c
@@ -27,11 +27,11 @@
#include <linux/interrupt.h>
#include <linux/kernel_stat.h>
#include <linux/seq_file.h>
-#include <linux/spinlock.h>
#include <linux/types.h>
#include <asm/io.h>
#include <asm/smp.h>
+#include <asm/ldcw.h>
#undef PARISC_IRQ_CR16_COUNTS
@@ -172,10 +172,6 @@ int arch_show_interrupts(struct seq_file *p, int prec)
for_each_online_cpu(j)
seq_printf(p, "%10u ", irq_stats(j)->irq_stack_usage);
seq_puts(p, " Interrupt stack usage\n");
- seq_printf(p, "%*s: ", prec, "ISC");
- for_each_online_cpu(j)
- seq_printf(p, "%10u ", irq_stats(j)->irq_stack_counter);
- seq_puts(p, " Interrupt stack usage counter\n");
# endif
#endif
#ifdef CONFIG_SMP
@@ -188,6 +184,14 @@ int arch_show_interrupts(struct seq_file *p, int prec)
seq_printf(p, "%10u ", irq_stats(j)->irq_call_count);
seq_puts(p, " Function call interrupts\n");
#endif
+ seq_printf(p, "%*s: ", prec, "UAH");
+ for_each_online_cpu(j)
+ seq_printf(p, "%10u ", irq_stats(j)->irq_unaligned_count);
+ seq_puts(p, " Unaligned access handler traps\n");
+ seq_printf(p, "%*s: ", prec, "FPA");
+ for_each_online_cpu(j)
+ seq_printf(p, "%10u ", irq_stats(j)->irq_fpassist_count);
+ seq_puts(p, " Floating point assist traps\n");
seq_printf(p, "%*s: ", prec, "TLB");
for_each_online_cpu(j)
seq_printf(p, "%10u ", irq_stats(j)->irq_tlb_count);
@@ -376,6 +380,24 @@ static inline int eirr_to_irq(unsigned long eirr)
return (BITS_PER_LONG - bit) + TIMER_IRQ;
}
+#ifdef CONFIG_IRQSTACKS
+/*
+ * IRQ STACK - used for irq handler
+ */
+#define IRQ_STACK_SIZE (4096 << 2) /* 16k irq stack size */
+
+union irq_stack_union {
+ unsigned long stack[IRQ_STACK_SIZE/sizeof(unsigned long)];
+ volatile unsigned int slock[4];
+ volatile unsigned int lock[1];
+};
+
+DEFINE_PER_CPU(union irq_stack_union, irq_stack_union) = {
+ .slock = { 1,1,1,1 },
+ };
+#endif
+
+
int sysctl_panic_on_stackoverflow = 1;
static inline void stack_overflow_check(struct pt_regs *regs)
@@ -442,27 +464,26 @@ panic_check:
}
#ifdef CONFIG_IRQSTACKS
-DEFINE_PER_CPU(union irq_stack_union, irq_stack_union) = {
- .lock = __RAW_SPIN_LOCK_UNLOCKED((irq_stack_union).lock)
- };
+/* in entry.S: */
+void call_on_stack(unsigned long p1, void *func, unsigned long new_stack);
static void execute_on_irq_stack(void *func, unsigned long param1)
{
union irq_stack_union *union_ptr;
unsigned long irq_stack;
- raw_spinlock_t *irq_stack_in_use;
+ volatile unsigned int *irq_stack_in_use;
union_ptr = &per_cpu(irq_stack_union, smp_processor_id());
irq_stack = (unsigned long) &union_ptr->stack;
- irq_stack = ALIGN(irq_stack + sizeof(irq_stack_union.lock),
+ irq_stack = ALIGN(irq_stack + sizeof(irq_stack_union.slock),
64); /* align for stack frame usage */
/* We may be called recursive. If we are already using the irq stack,
* just continue to use it. Use spinlocks to serialize
* the irq stack usage.
*/
- irq_stack_in_use = &union_ptr->lock;
- if (!raw_spin_trylock(irq_stack_in_use)) {
+ irq_stack_in_use = (volatile unsigned int *)__ldcw_align(union_ptr);
+ if (!__ldcw(irq_stack_in_use)) {
void (*direct_call)(unsigned long p1) = func;
/* We are using the IRQ stack already.
@@ -474,10 +495,8 @@ static void execute_on_irq_stack(void *func, unsigned long param1)
/* This is where we switch to the IRQ stack. */
call_on_stack(param1, func, irq_stack);
- __inc_irq_stat(irq_stack_counter);
-
/* free up irq stack usage. */
- do_raw_spin_unlock(irq_stack_in_use);
+ *irq_stack_in_use = 1;
}
asmlinkage void do_softirq(void)
diff --git a/arch/parisc/kernel/pacache.S b/arch/parisc/kernel/pacache.S
index 5e1de6072be5..36d7f402e48e 100644
--- a/arch/parisc/kernel/pacache.S
+++ b/arch/parisc/kernel/pacache.S
@@ -605,14 +605,14 @@ ENTRY(copy_user_page_asm)
convert_phys_for_tlb_insert20 %r26 /* convert phys addr to tlb insert format */
convert_phys_for_tlb_insert20 %r23 /* convert phys addr to tlb insert format */
depd %r24,63,22, %r28 /* Form aliased virtual address 'to' */
- depdi 0, 63,PAGE_SHIFT, %r28 /* Clear any offset bits */
+ depdi 0, 63,PAGE_SHIFT, %r28 /* Clear any offset bits */
copy %r28, %r29
depdi 1, 41,1, %r29 /* Form aliased virtual address 'from' */
#else
extrw,u %r26, 24,25, %r26 /* convert phys addr to tlb insert format */
extrw,u %r23, 24,25, %r23 /* convert phys addr to tlb insert format */
depw %r24, 31,22, %r28 /* Form aliased virtual address 'to' */
- depwi 0, 31,12, %r28 /* Clear any offset bits */
+ depwi 0, 31,PAGE_SHIFT, %r28 /* Clear any offset bits */
copy %r28, %r29
depwi 1, 9,1, %r29 /* Form aliased virtual address 'from' */
#endif
@@ -762,7 +762,7 @@ ENTRY(clear_user_page_asm)
#else
extrw,u %r26, 24,25, %r26 /* convert phys addr to tlb insert format */
depw %r25, 31,22, %r28 /* Form aliased virtual address 'to' */
- depwi 0, 31,12, %r28 /* Clear any offset bits */
+ depwi 0, 31,PAGE_SHIFT, %r28 /* Clear any offset bits */
#endif
/* Purge any old translation */
@@ -846,7 +846,7 @@ ENTRY(flush_dcache_page_asm)
#else
extrw,u %r26, 24,25, %r26 /* convert phys addr to tlb insert format */
depw %r25, 31,22, %r28 /* Form aliased virtual address 'to' */
- depwi 0, 31,12, %r28 /* Clear any offset bits */
+ depwi 0, 31,PAGE_SHIFT, %r28 /* Clear any offset bits */
#endif
/* Purge any old translation */
@@ -918,11 +918,11 @@ ENTRY(flush_icache_page_asm)
#endif
convert_phys_for_tlb_insert20 %r26 /* convert phys addr to tlb insert format */
depd %r25, 63,22, %r28 /* Form aliased virtual address 'to' */
- depdi 0, 63,PAGE_SHIFT, %r28 /* Clear any offset bits */
+ depdi 0, 63,PAGE_SHIFT, %r28 /* Clear any offset bits */
#else
extrw,u %r26, 24,25, %r26 /* convert phys addr to tlb insert format */
depw %r25, 31,22, %r28 /* Form aliased virtual address 'to' */
- depwi 0, 31,12, %r28 /* Clear any offset bits */
+ depwi 0, 31,PAGE_SHIFT, %r28 /* Clear any offset bits */
#endif
/* Purge any old translation */
diff --git a/arch/parisc/kernel/traps.c b/arch/parisc/kernel/traps.c
index fe41a98043bb..04e47c6a4562 100644
--- a/arch/parisc/kernel/traps.c
+++ b/arch/parisc/kernel/traps.c
@@ -646,6 +646,7 @@ void notrace handle_interruption(int code, struct pt_regs *regs)
case 14:
/* Assist Exception Trap, i.e. floating point exception. */
die_if_kernel("Floating point exception", regs, 0); /* quiet */
+ __inc_irq_stat(irq_fpassist_count);
handle_fpe(regs);
return;
diff --git a/arch/parisc/kernel/unaligned.c b/arch/parisc/kernel/unaligned.c
index 234e3682cf09..d7c0acb35ec2 100644
--- a/arch/parisc/kernel/unaligned.c
+++ b/arch/parisc/kernel/unaligned.c
@@ -27,6 +27,7 @@
#include <linux/signal.h>
#include <linux/ratelimit.h>
#include <asm/uaccess.h>
+#include <asm/hardirq.h>
/* #define DEBUG_UNALIGNED 1 */
@@ -454,6 +455,8 @@ void handle_unaligned(struct pt_regs *regs)
struct siginfo si;
register int flop=0; /* true if this is a flop */
+ __inc_irq_stat(irq_unaligned_count);
+
/* log a message with pacing */
if (user_mode(regs)) {
if (current->thread.flags & PARISC_UAC_SIGBUS) {