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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.S60
-rw-r--r--arch/arm/kernel/hw_breakpoint.c44
-rw-r--r--arch/arm/kernel/irq.c17
-rw-r--r--arch/arm/kernel/kprobes-decode.c2
-rw-r--r--arch/arm/kernel/module.c36
-rw-r--r--arch/arm/kernel/perf_event.c2
-rw-r--r--arch/arm/kernel/pmu.c22
-rw-r--r--arch/arm/kernel/process.c2
-rw-r--r--arch/arm/kernel/sched_clock.c9
-rw-r--r--arch/arm/kernel/setup.c26
-rw-r--r--arch/arm/kernel/signal.c4
-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
-rw-r--r--arch/arm/kernel/vmlinux.lds.S11
17 files changed, 176 insertions, 111 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..f06ff9feb0d 100644
--- a/arch/arm/kernel/head.S
+++ b/arch/arm/kernel/head.S
@@ -391,25 +391,24 @@ ENDPROC(__turn_mmu_on)
#ifdef CONFIG_SMP_ON_UP
+ __INIT
__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
@@ -417,18 +416,7 @@ __fixup_smp_on_up:
sub r3, r0, r3
add r4, r4, r3
add r5, r5, r3
-2: cmp r4, r5
- movhs pc, lr
- ldmia r4!, {r0, r6}
- ARM( str r6, [r0, r3] )
- THUMB( add r0, r0, r3 )
-#ifdef __ARMEB__
- THUMB( mov r6, r6, ror #16 ) @ Convert word order for big-endian.
-#endif
- THUMB( strh r6, [r0], #2 ) @ For Thumb-2, store as two halfwords
- THUMB( mov r6, r6, lsr #16 ) @ to be robust against misaligned r3.
- THUMB( strh r6, [r0] )
- b 2b
+ b __do_fixup_smp_on_up
ENDPROC(__fixup_smp)
.align
@@ -442,7 +430,31 @@ smp_on_up:
ALT_SMP(.long 1)
ALT_UP(.long 0)
.popsection
+#endif
+ .text
+__do_fixup_smp_on_up:
+ cmp r4, r5
+ movhs pc, lr
+ ldmia r4!, {r0, r6}
+ ARM( str r6, [r0, r3] )
+ THUMB( add r0, r0, r3 )
+#ifdef __ARMEB__
+ THUMB( mov r6, r6, ror #16 ) @ Convert word order for big-endian.
#endif
+ THUMB( strh r6, [r0], #2 ) @ For Thumb-2, store as two halfwords
+ THUMB( mov r6, r6, lsr #16 ) @ to be robust against misaligned r3.
+ THUMB( strh r6, [r0] )
+ b __do_fixup_smp_on_up
+ENDPROC(__do_fixup_smp_on_up)
+
+ENTRY(fixup_smp)
+ stmfd sp!, {r4 - r6, lr}
+ mov r4, r0
+ add r5, r0, r1
+ mov r3, #0
+ bl __do_fixup_smp_on_up
+ ldmfd sp!, {r4 - r6, pc}
+ENDPROC(fixup_smp)
#include "head-common.S"
diff --git a/arch/arm/kernel/hw_breakpoint.c b/arch/arm/kernel/hw_breakpoint.c
index c9f3f046757..d600bd35070 100644
--- a/arch/arm/kernel/hw_breakpoint.c
+++ b/arch/arm/kernel/hw_breakpoint.c
@@ -137,11 +137,10 @@ static u8 get_debug_arch(void)
u32 didr;
/* Do we implement the extended CPUID interface? */
- if (((read_cpuid_id() >> 16) & 0xf) != 0xf) {
- pr_warning("CPUID feature registers not supported. "
- "Assuming v6 debug is present.\n");
+ if (WARN_ONCE((((read_cpuid_id() >> 16) & 0xf) != 0xf),
+ "CPUID feature registers not supported. "
+ "Assuming v6 debug is present.\n"))
return ARM_DEBUG_ARCH_V6;
- }
ARM_DBG_READ(c0, 0, didr);
return (didr >> 16) & 0xf;
@@ -152,6 +151,12 @@ u8 arch_get_debug_arch(void)
return debug_arch;
}
+static int debug_arch_supported(void)
+{
+ u8 arch = get_debug_arch();
+ return arch >= ARM_DEBUG_ARCH_V6 && arch <= ARM_DEBUG_ARCH_V7_ECP14;
+}
+
/* Determine number of BRP register available. */
static int get_num_brp_resources(void)
{
@@ -268,6 +273,9 @@ out:
int hw_breakpoint_slots(int type)
{
+ if (!debug_arch_supported())
+ return 0;
+
/*
* We can be called early, so don't rely on
* our static variables being initialised.
@@ -834,11 +842,11 @@ static void reset_ctrl_regs(void *unused)
/*
* v7 debug contains save and restore registers so that debug state
- * can be maintained across low-power modes without leaving
- * the debug logic powered up. It is IMPLEMENTATION DEFINED whether
- * we can write to the debug registers out of reset, so we must
- * unlock the OS Lock Access Register to avoid taking undefined
- * instruction exceptions later on.
+ * can be maintained across low-power modes without leaving the debug
+ * logic powered up. It is IMPLEMENTATION DEFINED whether we can access
+ * the debug registers out of reset, so we must unlock the OS Lock
+ * Access Register to avoid taking undefined instruction exceptions
+ * later on.
*/
if (debug_arch >= ARM_DEBUG_ARCH_V7_ECP14) {
/*
@@ -882,7 +890,7 @@ static int __init arch_hw_breakpoint_init(void)
debug_arch = get_debug_arch();
- if (debug_arch > ARM_DEBUG_ARCH_V7_ECP14) {
+ if (!debug_arch_supported()) {
pr_info("debug architecture 0x%x unsupported.\n", debug_arch);
return 0;
}
@@ -899,18 +907,18 @@ static int __init arch_hw_breakpoint_init(void)
pr_info("%d breakpoint(s) reserved for watchpoint "
"single-step.\n", core_num_reserved_brps);
+ /*
+ * Reset the breakpoint resources. We assume that a halting
+ * debugger will leave the world in a nice state for us.
+ */
+ on_each_cpu(reset_ctrl_regs, NULL, 1);
+
ARM_DBG_READ(c1, 0, dscr);
if (dscr & ARM_DSCR_HDBGEN) {
+ max_watchpoint_len = 4;
pr_warning("halting debug mode enabled. Assuming maximum "
- "watchpoint size of 4 bytes.");
+ "watchpoint size of %u bytes.", max_watchpoint_len);
} else {
- /*
- * Reset the breakpoint resources. We assume that a halting
- * debugger will leave the world in a nice state for us.
- */
- smp_call_function(reset_ctrl_regs, NULL, 1);
- reset_ctrl_regs(NULL);
-
/* Work out the maximum supported watchpoint length. */
max_watchpoint_len = get_max_wp_len();
pr_info("maximum watchpoint size is %u bytes.\n",
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/kprobes-decode.c b/arch/arm/kernel/kprobes-decode.c
index 2c1f0050c9c..8f6ed43861f 100644
--- a/arch/arm/kernel/kprobes-decode.c
+++ b/arch/arm/kernel/kprobes-decode.c
@@ -1437,7 +1437,7 @@ arm_kprobe_decode_insn(kprobe_opcode_t insn, struct arch_specific_insn *asi)
return space_cccc_1100_010x(insn, asi);
- } else if ((insn & 0x0e000000) == 0x0c400000) {
+ } else if ((insn & 0x0e000000) == 0x0c000000) {
return space_cccc_110x(insn, asi);
diff --git a/arch/arm/kernel/module.c b/arch/arm/kernel/module.c
index 0c1bb68ff4a..6d4105e6872 100644
--- a/arch/arm/kernel/module.c
+++ b/arch/arm/kernel/module.c
@@ -22,6 +22,7 @@
#include <asm/pgtable.h>
#include <asm/sections.h>
+#include <asm/smp_plat.h>
#include <asm/unwind.h>
#ifdef CONFIG_XIP_KERNEL
@@ -38,17 +39,9 @@
#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)
@@ -276,12 +269,28 @@ struct mod_unwind_map {
const Elf_Shdr *txt_sec;
};
+static const Elf_Shdr *find_mod_section(const Elf32_Ehdr *hdr,
+ const Elf_Shdr *sechdrs, const char *name)
+{
+ const Elf_Shdr *s, *se;
+ const char *secstrs = (void *)hdr + sechdrs[hdr->e_shstrndx].sh_offset;
+
+ for (s = sechdrs, se = sechdrs + hdr->e_shnum; s < se; s++)
+ if (strcmp(name, secstrs + s->sh_name) == 0)
+ return s;
+
+ return NULL;
+}
+
+extern void fixup_smp(const void *, unsigned long);
+
int module_finalize(const Elf32_Ehdr *hdr, const Elf_Shdr *sechdrs,
struct module *mod)
{
+ const Elf_Shdr * __maybe_unused s = NULL;
#ifdef CONFIG_ARM_UNWIND
const char *secstrs = (void *)hdr + sechdrs[hdr->e_shstrndx].sh_offset;
- const Elf_Shdr *s, *sechdrs_end = sechdrs + hdr->e_shnum;
+ const Elf_Shdr *sechdrs_end = sechdrs + hdr->e_shnum;
struct mod_unwind_map maps[ARM_SEC_MAX];
int i;
@@ -323,6 +332,9 @@ int module_finalize(const Elf32_Ehdr *hdr, const Elf_Shdr *sechdrs,
maps[i].txt_sec->sh_addr,
maps[i].txt_sec->sh_size);
#endif
+ s = find_mod_section(hdr, sechdrs, ".alt.smp.init");
+ if (s && !is_smp())
+ fixup_smp((void *)s->sh_addr, s->sh_size);
return 0;
}
diff --git a/arch/arm/kernel/perf_event.c b/arch/arm/kernel/perf_event.c
index 5efa2647a2f..d150ad1ccb5 100644
--- a/arch/arm/kernel/perf_event.c
+++ b/arch/arm/kernel/perf_event.c
@@ -700,7 +700,7 @@ user_backtrace(struct frame_tail __user *tail,
* Frame pointers should strictly progress back up the stack
* (towards higher addresses).
*/
- if (tail >= buftail.fp)
+ if (tail + 1 >= buftail.fp)
return NULL;
return buftail.fp - 1;
diff --git a/arch/arm/kernel/pmu.c b/arch/arm/kernel/pmu.c
index b8af96ea62e..2c79eec1926 100644
--- a/arch/arm/kernel/pmu.c
+++ b/arch/arm/kernel/pmu.c
@@ -97,28 +97,34 @@ set_irq_affinity(int irq,
irq, cpu);
return err;
#else
- return 0;
+ return -EINVAL;
#endif
}
static int
init_cpu_pmu(void)
{
- int i, err = 0;
+ int i, irqs, err = 0;
struct platform_device *pdev = pmu_devices[ARM_PMU_DEVICE_CPU];
- if (!pdev) {
- err = -ENODEV;
- goto out;
- }
+ if (!pdev)
+ return -ENODEV;
+
+ irqs = pdev->num_resources;
+
+ /*
+ * If we have a single PMU interrupt that we can't shift, assume that
+ * we're running on a uniprocessor machine and continue.
+ */
+ if (irqs == 1 && !irq_can_set_affinity(platform_get_irq(pdev, 0)))
+ return 0;
- for (i = 0; i < pdev->num_resources; ++i) {
+ for (i = 0; i < irqs; ++i) {
err = set_irq_affinity(platform_get_irq(pdev, i), i);
if (err)
break;
}
-out:
return err;
}
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..5ea4fb718b9 100644
--- a/arch/arm/kernel/setup.c
+++ b/arch/arm/kernel/setup.c
@@ -226,8 +226,8 @@ int cpu_architecture(void)
* Register 0 and check for VMSAv7 or PMSAv7 */
asm("mrc p15, 0, %0, c0, c1, 4"
: "=r" (mmfr0));
- if ((mmfr0 & 0x0000000f) == 0x00000003 ||
- (mmfr0 & 0x000000f0) == 0x00000030)
+ if ((mmfr0 & 0x0000000f) >= 0x00000003 ||
+ (mmfr0 & 0x000000f0) >= 0x00000030)
cpu_arch = CPU_ARCH_ARMv7;
else if ((mmfr0 & 0x0000000f) == 0x00000002 ||
(mmfr0 & 0x000000f0) == 0x00000020)
@@ -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/signal.c b/arch/arm/kernel/signal.c
index 907d5a620bc..abaf8445ce2 100644
--- a/arch/arm/kernel/signal.c
+++ b/arch/arm/kernel/signal.c
@@ -474,7 +474,9 @@ setup_return(struct pt_regs *regs, struct k_sigaction *ka,
unsigned long handler = (unsigned long)ka->sa.sa_handler;
unsigned long retcode;
int thumb = 0;
- unsigned long cpsr = regs->ARM_cpsr & ~PSR_f;
+ unsigned long cpsr = regs->ARM_cpsr & ~(PSR_f | PSR_E_BIT);
+
+ cpsr |= PSR_ENDSTATE;
/*
* Maybe we need to deliver a 32-bit signal to a 26-bit task.
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
}
diff --git a/arch/arm/kernel/vmlinux.lds.S b/arch/arm/kernel/vmlinux.lds.S
index 86b66f3f203..61462790757 100644
--- a/arch/arm/kernel/vmlinux.lds.S
+++ b/arch/arm/kernel/vmlinux.lds.S
@@ -21,6 +21,12 @@
#define ARM_CPU_KEEP(x)
#endif
+#if defined(CONFIG_SMP_ON_UP) && !defined(CONFIG_DEBUG_SPINLOCK)
+#define ARM_EXIT_KEEP(x) x
+#else
+#define ARM_EXIT_KEEP(x)
+#endif
+
OUTPUT_ARCH(arm)
ENTRY(stext)
@@ -43,6 +49,7 @@ SECTIONS
_sinittext = .;
HEAD_TEXT
INIT_TEXT
+ ARM_EXIT_KEEP(EXIT_TEXT)
_einittext = .;
ARM_CPU_DISCARD(PROC_INFO)
__arch_info_begin = .;
@@ -67,6 +74,7 @@ SECTIONS
#ifndef CONFIG_XIP_KERNEL
__init_begin = _stext;
INIT_DATA
+ ARM_EXIT_KEEP(EXIT_DATA)
#endif
}
@@ -162,6 +170,7 @@ SECTIONS
. = ALIGN(PAGE_SIZE);
__init_begin = .;
INIT_DATA
+ ARM_EXIT_KEEP(EXIT_DATA)
. = ALIGN(PAGE_SIZE);
__init_end = .;
#endif
@@ -247,6 +256,8 @@ SECTIONS
}
#endif
+ NOTES
+
BSS_SECTION(0, 0, 0)
_end = .;
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-11-15 07:09:19 +0000