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-rw-r--r--arch/arm/kernel/ecard.c28
-rw-r--r--arch/arm/kernel/head-common.S2
-rw-r--r--arch/arm/kernel/head.S22
-rw-r--r--arch/arm/kernel/irq.c17
-rw-r--r--arch/arm/kernel/module.c14
-rw-r--r--arch/arm/kernel/process.c2
-rw-r--r--arch/arm/kernel/sched_clock.c9
-rw-r--r--arch/arm/kernel/setup.c22
-rw-r--r--arch/arm/kernel/smp_twd.c9
-rw-r--r--arch/arm/kernel/stacktrace.c9
-rw-r--r--arch/arm/kernel/time.c4
11 files changed, 71 insertions, 67 deletions
diff --git a/arch/arm/kernel/ecard.c b/arch/arm/kernel/ecard.c
index eed2f795e1b..2ad62df3773 100644
--- a/arch/arm/kernel/ecard.c
+++ b/arch/arm/kernel/ecard.c
@@ -443,40 +443,40 @@ static expansioncard_ops_t ecard_default_ops = {
*
* They are not meant to be called directly, but via enable/disable_irq.
*/
-static void ecard_irq_unmask(unsigned int irqnr)
+static void ecard_irq_unmask(struct irq_data *d)
{
- ecard_t *ec = slot_to_ecard(irqnr - 32);
+ ecard_t *ec = slot_to_ecard(d->irq - 32);
if (ec) {
if (!ec->ops)
ec->ops = &ecard_default_ops;
if (ec->claimed && ec->ops->irqenable)
- ec->ops->irqenable(ec, irqnr);
+ ec->ops->irqenable(ec, d->irq);
else
printk(KERN_ERR "ecard: rejecting request to "
- "enable IRQs for %d\n", irqnr);
+ "enable IRQs for %d\n", d->irq);
}
}
-static void ecard_irq_mask(unsigned int irqnr)
+static void ecard_irq_mask(struct irq_data *d)
{
- ecard_t *ec = slot_to_ecard(irqnr - 32);
+ ecard_t *ec = slot_to_ecard(d->irq - 32);
if (ec) {
if (!ec->ops)
ec->ops = &ecard_default_ops;
if (ec->ops && ec->ops->irqdisable)
- ec->ops->irqdisable(ec, irqnr);
+ ec->ops->irqdisable(ec, d->irq);
}
}
static struct irq_chip ecard_chip = {
- .name = "ECARD",
- .ack = ecard_irq_mask,
- .mask = ecard_irq_mask,
- .unmask = ecard_irq_unmask,
+ .name = "ECARD",
+ .irq_ack = ecard_irq_mask,
+ .irq_mask = ecard_irq_mask,
+ .irq_unmask = ecard_irq_unmask,
};
void ecard_enablefiq(unsigned int fiqnr)
@@ -551,7 +551,7 @@ static void ecard_check_lockup(struct irq_desc *desc)
printk(KERN_ERR "\nInterrupt lockup detected - "
"disabling all expansion card interrupts\n");
- desc->chip->mask(IRQ_EXPANSIONCARD);
+ desc->irq_data.chip->irq_mask(&desc->irq_data);
ecard_dump_irq_state();
}
} else
@@ -574,7 +574,7 @@ ecard_irq_handler(unsigned int irq, struct irq_desc *desc)
ecard_t *ec;
int called = 0;
- desc->chip->mask(irq);
+ desc->irq_data.chip->irq_mask(&desc->irq_data);
for (ec = cards; ec; ec = ec->next) {
int pending;
@@ -591,7 +591,7 @@ ecard_irq_handler(unsigned int irq, struct irq_desc *desc)
called ++;
}
}
- desc->chip->unmask(irq);
+ desc->irq_data.chip->irq_unmask(&desc->irq_data);
if (called == 0)
ecard_check_lockup(desc);
diff --git a/arch/arm/kernel/head-common.S b/arch/arm/kernel/head-common.S
index bbecaac1e01..8f57515bbdb 100644
--- a/arch/arm/kernel/head-common.S
+++ b/arch/arm/kernel/head-common.S
@@ -60,6 +60,8 @@ str_a1: .asciz "\nError: unrecognized/unsupported machine ID (r1 = 0x"
str_a2: .asciz ").\n\nAvailable machine support:\n\nID (hex)\tNAME\n"
str_a3: .asciz "\nPlease check your kernel config and/or bootloader.\n"
.align
+#else
+ b __error
#endif
/*
diff --git a/arch/arm/kernel/head.S b/arch/arm/kernel/head.S
index f17d9a09e8f..c0225da3fb2 100644
--- a/arch/arm/kernel/head.S
+++ b/arch/arm/kernel/head.S
@@ -392,24 +392,22 @@ ENDPROC(__turn_mmu_on)
#ifdef CONFIG_SMP_ON_UP
__fixup_smp:
- mov r4, #0x00070000
- orr r3, r4, #0xff000000 @ mask 0xff070000
- orr r4, r4, #0x41000000 @ val 0x41070000
- and r0, r9, r3
- teq r0, r4 @ ARM CPU and ARMv6/v7?
+ and r3, r9, #0x000f0000 @ architecture version
+ teq r3, #0x000f0000 @ CPU ID supported?
bne __fixup_smp_on_up @ no, assume UP
- orr r3, r3, #0x0000ff00
- orr r3, r3, #0x000000f0 @ mask 0xff07fff0
+ bic r3, r9, #0x00ff0000
+ bic r3, r3, #0x0000000f @ mask 0xff00fff0
+ mov r4, #0x41000000
orr r4, r4, #0x0000b000
- orr r4, r4, #0x00000020 @ val 0x4107b020
- and r0, r9, r3
- teq r0, r4 @ ARM 11MPCore?
+ orr r4, r4, #0x00000020 @ val 0x4100b020
+ teq r3, r4 @ ARM 11MPCore?
moveq pc, lr @ yes, assume SMP
mrc p15, 0, r0, c0, c0, 5 @ read MPIDR
- tst r0, #1 << 31
- movne pc, lr @ bit 31 => SMP
+ and r0, r0, #0xc0000000 @ multiprocessing extensions and
+ teq r0, #0x80000000 @ not part of a uniprocessor system?
+ moveq pc, lr @ yes, assume SMP
__fixup_smp_on_up:
adr r0, 1f
diff --git a/arch/arm/kernel/irq.c b/arch/arm/kernel/irq.c
index 8135438b881..28536e352de 100644
--- a/arch/arm/kernel/irq.c
+++ b/arch/arm/kernel/irq.c
@@ -88,7 +88,7 @@ int show_interrupts(struct seq_file *p, void *v)
seq_printf(p, "%*d: ", prec, i);
for_each_present_cpu(cpu)
seq_printf(p, "%10u ", kstat_irqs_cpu(i, cpu));
- seq_printf(p, " %10s", desc->chip->name ? : "-");
+ seq_printf(p, " %10s", desc->irq_data.chip->name ? : "-");
seq_printf(p, " %s", action->name);
for (action = action->next; action; action = action->next)
seq_printf(p, ", %s", action->name);
@@ -181,10 +181,11 @@ int __init arch_probe_nr_irqs(void)
static void route_irq(struct irq_desc *desc, unsigned int irq, unsigned int cpu)
{
- pr_debug("IRQ%u: moving from cpu%u to cpu%u\n", irq, desc->node, cpu);
+ pr_debug("IRQ%u: moving from cpu%u to cpu%u\n", irq, desc->irq_data.node, cpu);
raw_spin_lock_irq(&desc->lock);
- desc->chip->set_affinity(irq, cpumask_of(cpu));
+ desc->irq_data.chip->irq_set_affinity(&desc->irq_data,
+ cpumask_of(cpu), false);
raw_spin_unlock_irq(&desc->lock);
}
@@ -199,16 +200,18 @@ void migrate_irqs(void)
struct irq_desc *desc;
for_each_irq_desc(i, desc) {
- if (desc->node == cpu) {
- unsigned int newcpu = cpumask_any_and(desc->affinity,
+ struct irq_data *d = &desc->irq_data;
+
+ if (d->node == cpu) {
+ unsigned int newcpu = cpumask_any_and(d->affinity,
cpu_online_mask);
if (newcpu >= nr_cpu_ids) {
if (printk_ratelimit())
printk(KERN_INFO "IRQ%u no longer affine to CPU%u\n",
i, cpu);
- cpumask_setall(desc->affinity);
- newcpu = cpumask_any_and(desc->affinity,
+ cpumask_setall(d->affinity);
+ newcpu = cpumask_any_and(d->affinity,
cpu_online_mask);
}
diff --git a/arch/arm/kernel/module.c b/arch/arm/kernel/module.c
index 0c1bb68ff4a..2cfe8161b47 100644
--- a/arch/arm/kernel/module.c
+++ b/arch/arm/kernel/module.c
@@ -38,17 +38,9 @@
#ifdef CONFIG_MMU
void *module_alloc(unsigned long size)
{
- struct vm_struct *area;
-
- size = PAGE_ALIGN(size);
- if (!size)
- return NULL;
-
- area = __get_vm_area(size, VM_ALLOC, MODULES_VADDR, MODULES_END);
- if (!area)
- return NULL;
-
- return __vmalloc_area(area, GFP_KERNEL, PAGE_KERNEL_EXEC);
+ return __vmalloc_node_range(size, 1, MODULES_VADDR, MODULES_END,
+ GFP_KERNEL, PAGE_KERNEL_EXEC, -1,
+ __builtin_return_address(0));
}
#else /* CONFIG_MMU */
void *module_alloc(unsigned long size)
diff --git a/arch/arm/kernel/process.c b/arch/arm/kernel/process.c
index e76fcaadce0..94bbedbed63 100644
--- a/arch/arm/kernel/process.c
+++ b/arch/arm/kernel/process.c
@@ -483,6 +483,7 @@ unsigned long arch_randomize_brk(struct mm_struct *mm)
return randomize_range(mm->brk, range_end, 0) ? : mm->brk;
}
+#ifdef CONFIG_MMU
/*
* The vectors page is always readable from user space for the
* atomic helpers and the signal restart code. Let's declare a mapping
@@ -503,3 +504,4 @@ const char *arch_vma_name(struct vm_area_struct *vma)
{
return (vma->vm_start == 0xffff0000) ? "[vectors]" : NULL;
}
+#endif
diff --git a/arch/arm/kernel/sched_clock.c b/arch/arm/kernel/sched_clock.c
index 2cdcc9287c7..9a46370fe9d 100644
--- a/arch/arm/kernel/sched_clock.c
+++ b/arch/arm/kernel/sched_clock.c
@@ -34,7 +34,7 @@ void __init init_sched_clock(struct clock_data *cd, void (*update)(void),
sched_clock_update_fn = update;
/* calculate the mult/shift to convert counter ticks to ns. */
- clocks_calc_mult_shift(&cd->mult, &cd->shift, rate, NSEC_PER_SEC, 60);
+ clocks_calc_mult_shift(&cd->mult, &cd->shift, rate, NSEC_PER_SEC, 0);
r = rate;
if (r >= 4000000) {
@@ -60,10 +60,15 @@ void __init init_sched_clock(struct clock_data *cd, void (*update)(void),
* sets the initial epoch.
*/
sched_clock_timer.data = msecs_to_jiffies(w - (w / 10));
- sched_clock_poll(sched_clock_timer.data);
+ update();
/*
* Ensure that sched_clock() starts off at 0ns
*/
cd->epoch_ns = 0;
}
+
+void __init sched_clock_postinit(void)
+{
+ sched_clock_poll(sched_clock_timer.data);
+}
diff --git a/arch/arm/kernel/setup.c b/arch/arm/kernel/setup.c
index 3455ad33de4..420b8d6485d 100644
--- a/arch/arm/kernel/setup.c
+++ b/arch/arm/kernel/setup.c
@@ -518,25 +518,21 @@ setup_ramdisk(int doload, int prompt, int image_start, unsigned int rd_sz)
#endif
}
-static void __init
-request_standard_resources(struct meminfo *mi, struct machine_desc *mdesc)
+static void __init request_standard_resources(struct machine_desc *mdesc)
{
+ struct memblock_region *region;
struct resource *res;
- int i;
kernel_code.start = virt_to_phys(_text);
kernel_code.end = virt_to_phys(_etext - 1);
kernel_data.start = virt_to_phys(_sdata);
kernel_data.end = virt_to_phys(_end - 1);
- for (i = 0; i < mi->nr_banks; i++) {
- if (mi->bank[i].size == 0)
- continue;
-
+ for_each_memblock(memory, region) {
res = alloc_bootmem_low(sizeof(*res));
res->name = "System RAM";
- res->start = mi->bank[i].start;
- res->end = mi->bank[i].start + mi->bank[i].size - 1;
+ res->start = __pfn_to_phys(memblock_region_memory_base_pfn(region));
+ res->end = __pfn_to_phys(memblock_region_memory_end_pfn(region)) - 1;
res->flags = IORESOURCE_MEM | IORESOURCE_BUSY;
request_resource(&iomem_resource, res);
@@ -650,15 +646,17 @@ static int __init parse_tag_revision(const struct tag *tag)
__tagtable(ATAG_REVISION, parse_tag_revision);
-#ifndef CONFIG_CMDLINE_FORCE
static int __init parse_tag_cmdline(const struct tag *tag)
{
+#ifndef CONFIG_CMDLINE_FORCE
strlcpy(default_command_line, tag->u.cmdline.cmdline, COMMAND_LINE_SIZE);
+#else
+ pr_warning("Ignoring tag cmdline (using the default kernel command line)\n");
+#endif /* CONFIG_CMDLINE_FORCE */
return 0;
}
__tagtable(ATAG_CMDLINE, parse_tag_cmdline);
-#endif /* CONFIG_CMDLINE_FORCE */
/*
* Scan the tag table for this tag, and call its parse function.
@@ -857,7 +855,7 @@ void __init setup_arch(char **cmdline_p)
arm_memblock_init(&meminfo, mdesc);
paging_init(mdesc);
- request_standard_resources(&meminfo, mdesc);
+ request_standard_resources(mdesc);
#ifdef CONFIG_SMP
if (is_smp())
diff --git a/arch/arm/kernel/smp_twd.c b/arch/arm/kernel/smp_twd.c
index dd790745b3e..60636f499cb 100644
--- a/arch/arm/kernel/smp_twd.c
+++ b/arch/arm/kernel/smp_twd.c
@@ -36,6 +36,7 @@ static void twd_set_mode(enum clock_event_mode mode,
/* timer load already set up */
ctrl = TWD_TIMER_CONTROL_ENABLE | TWD_TIMER_CONTROL_IT_ENABLE
| TWD_TIMER_CONTROL_PERIODIC;
+ __raw_writel(twd_timer_rate / HZ, twd_base + TWD_TIMER_LOAD);
break;
case CLOCK_EVT_MODE_ONESHOT:
/* period set, and timer enabled in 'next_event' hook */
@@ -81,7 +82,7 @@ int twd_timer_ack(void)
static void __cpuinit twd_calibrate_rate(void)
{
- unsigned long load, count;
+ unsigned long count;
u64 waitjiffies;
/*
@@ -114,12 +115,8 @@ static void __cpuinit twd_calibrate_rate(void)
twd_timer_rate = (0xFFFFFFFFU - count) * (HZ / 5);
printk("%lu.%02luMHz.\n", twd_timer_rate / 1000000,
- (twd_timer_rate / 100000) % 100);
+ (twd_timer_rate / 1000000) % 100);
}
-
- load = twd_timer_rate / HZ;
-
- __raw_writel(load, twd_base + TWD_TIMER_LOAD);
}
/*
diff --git a/arch/arm/kernel/stacktrace.c b/arch/arm/kernel/stacktrace.c
index c2e112e1a05..381d23a497c 100644
--- a/arch/arm/kernel/stacktrace.c
+++ b/arch/arm/kernel/stacktrace.c
@@ -94,10 +94,13 @@ void save_stack_trace_tsk(struct task_struct *tsk, struct stack_trace *trace)
if (tsk != current) {
#ifdef CONFIG_SMP
/*
- * What guarantees do we have here that 'tsk'
- * is not running on another CPU?
+ * What guarantees do we have here that 'tsk' is not
+ * running on another CPU? For now, ignore it as we
+ * can't guarantee we won't explode.
*/
- BUG();
+ if (trace->nr_entries < trace->max_entries)
+ trace->entries[trace->nr_entries++] = ULONG_MAX;
+ return;
#else
data.no_sched_functions = 1;
frame.fp = thread_saved_fp(tsk);
diff --git a/arch/arm/kernel/time.c b/arch/arm/kernel/time.c
index f1e2eb19a67..3d76bf23373 100644
--- a/arch/arm/kernel/time.c
+++ b/arch/arm/kernel/time.c
@@ -29,6 +29,7 @@
#include <asm/leds.h>
#include <asm/thread_info.h>
+#include <asm/sched_clock.h>
#include <asm/stacktrace.h>
#include <asm/mach/arch.h>
#include <asm/mach/time.h>
@@ -163,5 +164,8 @@ void __init time_init(void)
{
system_timer = machine_desc->timer;
system_timer->init();
+#ifdef CONFIG_HAVE_SCHED_CLOCK
+ sched_clock_postinit();
+#endif
}
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-11-22 18:11:35 +0000