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Diffstat (limited to 'arch/alpha')
-rw-r--r--arch/alpha/kernel/proto.h15
-rw-r--r--arch/alpha/kernel/time.c17
-rw-r--r--arch/alpha/mm/Makefile2
-rw-r--r--arch/alpha/mm/fault.c2
-rw-r--r--arch/alpha/mm/remap.c86
5 files changed, 20 insertions, 102 deletions
diff --git a/arch/alpha/kernel/proto.h b/arch/alpha/kernel/proto.h
index 2a6e3da8144..21f71287b6f 100644
--- a/arch/alpha/kernel/proto.h
+++ b/arch/alpha/kernel/proto.h
@@ -1,5 +1,7 @@
#include <linux/interrupt.h>
+#include <linux/io.h>
+#include <asm/pgtable.h>
/* Prototypes of functions used across modules here in this directory. */
@@ -181,9 +183,16 @@ extern void titan_dispatch_irqs(u64, struct pt_regs *);
extern void switch_to_system_map(void);
extern void srm_paging_stop(void);
-/* ../mm/remap.c */
-extern int __alpha_remap_area_pages(unsigned long, unsigned long,
- unsigned long, unsigned long);
+static inline int
+__alpha_remap_area_pages(unsigned long address, unsigned long phys_addr,
+ unsigned long size, unsigned long flags)
+{
+ pgprot_t prot;
+
+ prot = __pgprot(_PAGE_VALID | _PAGE_ASM | _PAGE_KRE
+ | _PAGE_KWE | flags);
+ return ioremap_page_range(address, address + size, phys_addr, prot);
+}
/* irq.c */
diff --git a/arch/alpha/kernel/time.c b/arch/alpha/kernel/time.c
index b191cc75973..581ddcc22fc 100644
--- a/arch/alpha/kernel/time.c
+++ b/arch/alpha/kernel/time.c
@@ -54,8 +54,6 @@
#include "proto.h"
#include "irq_impl.h"
-extern unsigned long wall_jiffies; /* kernel/timer.c */
-
static int set_rtc_mmss(unsigned long);
DEFINE_SPINLOCK(rtc_lock);
@@ -132,7 +130,7 @@ irqreturn_t timer_interrupt(int irq, void *dev, struct pt_regs * regs)
nticks = delta >> FIX_SHIFT;
while (nticks > 0) {
- do_timer(regs);
+ do_timer(1);
#ifndef CONFIG_SMP
update_process_times(user_mode(regs));
#endif
@@ -413,7 +411,7 @@ void
do_gettimeofday(struct timeval *tv)
{
unsigned long flags;
- unsigned long sec, usec, lost, seq;
+ unsigned long sec, usec, seq;
unsigned long delta_cycles, delta_usec, partial_tick;
do {
@@ -423,14 +421,13 @@ do_gettimeofday(struct timeval *tv)
sec = xtime.tv_sec;
usec = (xtime.tv_nsec / 1000);
partial_tick = state.partial_tick;
- lost = jiffies - wall_jiffies;
} while (read_seqretry_irqrestore(&xtime_lock, seq, flags));
#ifdef CONFIG_SMP
/* Until and unless we figure out how to get cpu cycle counters
in sync and keep them there, we can't use the rpcc tricks. */
- delta_usec = lost * (1000000 / HZ);
+ delta_usec = 0;
#else
/*
* usec = cycles * ticks_per_cycle * 2**48 * 1e6 / (2**48 * ticks)
@@ -446,8 +443,7 @@ do_gettimeofday(struct timeval *tv)
*/
delta_usec = (delta_cycles * state.scaled_ticks_per_cycle
- + partial_tick
- + (lost << FIX_SHIFT)) * 15625;
+ + partial_tick) * 15625;
delta_usec = ((delta_usec / ((1UL << (FIX_SHIFT-6-1)) * HZ)) + 1) / 2;
#endif
@@ -480,12 +476,11 @@ do_settimeofday(struct timespec *tv)
time. Without this, a full-tick error is possible. */
#ifdef CONFIG_SMP
- delta_nsec = (jiffies - wall_jiffies) * (NSEC_PER_SEC / HZ);
+ delta_nsec = 0;
#else
delta_nsec = rpcc() - state.last_time;
delta_nsec = (delta_nsec * state.scaled_ticks_per_cycle
- + state.partial_tick
- + ((jiffies - wall_jiffies) << FIX_SHIFT)) * 15625;
+ + state.partial_tick) * 15625;
delta_nsec = ((delta_nsec / ((1UL << (FIX_SHIFT-6-1)) * HZ)) + 1) / 2;
delta_nsec *= 1000;
#endif
diff --git a/arch/alpha/mm/Makefile b/arch/alpha/mm/Makefile
index 6edd9a09ea4..09399c5386c 100644
--- a/arch/alpha/mm/Makefile
+++ b/arch/alpha/mm/Makefile
@@ -4,6 +4,6 @@
EXTRA_CFLAGS := -Werror
-obj-y := init.o fault.o extable.o remap.o
+obj-y := init.o fault.o extable.o
obj-$(CONFIG_DISCONTIGMEM) += numa.o
diff --git a/arch/alpha/mm/fault.c b/arch/alpha/mm/fault.c
index 622dabd8468..8871529a34e 100644
--- a/arch/alpha/mm/fault.c
+++ b/arch/alpha/mm/fault.c
@@ -193,7 +193,7 @@ do_page_fault(unsigned long address, unsigned long mmcsr,
/* We ran out of memory, or some other thing happened to us that
made us unable to handle the page fault gracefully. */
out_of_memory:
- if (current->pid == 1) {
+ if (is_init(current)) {
yield();
down_read(&mm->mmap_sem);
goto survive;
diff --git a/arch/alpha/mm/remap.c b/arch/alpha/mm/remap.c
deleted file mode 100644
index a78356c3ead..00000000000
--- a/arch/alpha/mm/remap.c
+++ /dev/null
@@ -1,86 +0,0 @@
-#include <linux/vmalloc.h>
-#include <asm/pgalloc.h>
-#include <asm/cacheflush.h>
-
-static inline void
-remap_area_pte(pte_t * pte, unsigned long address, unsigned long size,
- unsigned long phys_addr, unsigned long flags)
-{
- unsigned long end;
- unsigned long pfn;
-
- address &= ~PMD_MASK;
- end = address + size;
- if (end > PMD_SIZE)
- end = PMD_SIZE;
- if (address >= end)
- BUG();
- pfn = phys_addr >> PAGE_SHIFT;
- do {
- if (!pte_none(*pte)) {
- printk("remap_area_pte: page already exists\n");
- BUG();
- }
- set_pte(pte, pfn_pte(pfn,
- __pgprot(_PAGE_VALID | _PAGE_ASM |
- _PAGE_KRE | _PAGE_KWE | flags)));
- address += PAGE_SIZE;
- pfn++;
- pte++;
- } while (address && (address < end));
-}
-
-static inline int
-remap_area_pmd(pmd_t * pmd, unsigned long address, unsigned long size,
- unsigned long phys_addr, unsigned long flags)
-{
- unsigned long end;
-
- address &= ~PGDIR_MASK;
- end = address + size;
- if (end > PGDIR_SIZE)
- end = PGDIR_SIZE;
- phys_addr -= address;
- if (address >= end)
- BUG();
- do {
- pte_t * pte = pte_alloc_kernel(pmd, address);
- if (!pte)
- return -ENOMEM;
- remap_area_pte(pte, address, end - address,
- address + phys_addr, flags);
- address = (address + PMD_SIZE) & PMD_MASK;
- pmd++;
- } while (address && (address < end));
- return 0;
-}
-
-int
-__alpha_remap_area_pages(unsigned long address, unsigned long phys_addr,
- unsigned long size, unsigned long flags)
-{
- pgd_t * dir;
- int error = 0;
- unsigned long end = address + size;
-
- phys_addr -= address;
- dir = pgd_offset(&init_mm, address);
- flush_cache_all();
- if (address >= end)
- BUG();
- do {
- pmd_t *pmd;
- pmd = pmd_alloc(&init_mm, dir, address);
- error = -ENOMEM;
- if (!pmd)
- break;
- if (remap_area_pmd(pmd, address, end - address,
- phys_addr + address, flags))
- break;
- error = 0;
- address = (address + PGDIR_SIZE) & PGDIR_MASK;
- dir++;
- } while (address && (address < end));
- return error;
-}
-
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-16 11:59:44 +0000