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-rw-r--r--arch/ia64/kernel/acpi.c28
-rw-r--r--arch/ia64/kernel/cyclone.c14
-rw-r--r--arch/ia64/kernel/head.S4
-rw-r--r--arch/ia64/kernel/init_task.c1
-rw-r--r--arch/ia64/kernel/iosapic.c19
-rw-r--r--arch/ia64/kernel/irq_ia64.c48
-rw-r--r--arch/ia64/kernel/machvec.c27
-rw-r--r--arch/ia64/kernel/mca.c17
-rw-r--r--arch/ia64/kernel/perfmon.c4
-rw-r--r--arch/ia64/kernel/process.c7
-rw-r--r--arch/ia64/kernel/setup.c12
-rw-r--r--arch/ia64/kernel/smp.c10
-rw-r--r--arch/ia64/kernel/smpboot.c6
-rw-r--r--arch/ia64/kernel/time.c20
-rw-r--r--arch/ia64/kernel/vmlinux.lds.S2
15 files changed, 137 insertions, 82 deletions
diff --git a/arch/ia64/kernel/acpi.c b/arch/ia64/kernel/acpi.c
index 103dd8edda71..3d45d24a9d61 100644
--- a/arch/ia64/kernel/acpi.c
+++ b/arch/ia64/kernel/acpi.c
@@ -67,6 +67,8 @@ EXPORT_SYMBOL(pm_power_off);
unsigned int acpi_cpei_override;
unsigned int acpi_cpei_phys_cpuid;
+unsigned long acpi_wakeup_address = 0;
+
const char __init *
acpi_get_sysname(void)
{
@@ -739,16 +741,15 @@ int __init acpi_boot_init(void)
int acpi_gsi_to_irq(u32 gsi, unsigned int *irq)
{
- int vector;
+ int tmp;
if (has_8259 && gsi < 16)
*irq = isa_irq_to_vector(gsi);
else {
- vector = gsi_to_vector(gsi);
- if (vector == -1)
+ tmp = gsi_to_irq(gsi);
+ if (tmp == -1)
return -1;
-
- *irq = vector;
+ *irq = tmp;
}
return 0;
}
@@ -986,4 +987,21 @@ int acpi_unregister_ioapic(acpi_handle handle, u32 gsi_base)
EXPORT_SYMBOL(acpi_unregister_ioapic);
+/*
+ * acpi_save_state_mem() - save kernel state
+ *
+ * TBD when when IA64 starts to support suspend...
+ */
+int acpi_save_state_mem(void) { return 0; }
+
+/*
+ * acpi_restore_state()
+ */
+void acpi_restore_state_mem(void) {}
+
+/*
+ * do_suspend_lowlevel()
+ */
+void do_suspend_lowlevel(void) {}
+
#endif /* CONFIG_ACPI */
diff --git a/arch/ia64/kernel/cyclone.c b/arch/ia64/kernel/cyclone.c
index 2fd96d9062a1..790ef0d87e12 100644
--- a/arch/ia64/kernel/cyclone.c
+++ b/arch/ia64/kernel/cyclone.c
@@ -38,11 +38,11 @@ static struct clocksource clocksource_cyclone = {
int __init init_cyclone_clock(void)
{
- u64* reg;
+ u64 __iomem *reg;
u64 base; /* saved cyclone base address */
u64 offset; /* offset from pageaddr to cyclone_timer register */
int i;
- u32* volatile cyclone_timer; /* Cyclone MPMC0 register */
+ u32 __iomem *cyclone_timer; /* Cyclone MPMC0 register */
if (!use_cyclone)
return 0;
@@ -51,7 +51,7 @@ int __init init_cyclone_clock(void)
/* find base address */
offset = (CYCLONE_CBAR_ADDR);
- reg = (u64*)ioremap_nocache(offset, sizeof(u64));
+ reg = ioremap_nocache(offset, sizeof(u64));
if(!reg){
printk(KERN_ERR "Summit chipset: Could not find valid CBAR"
" register.\n");
@@ -69,7 +69,7 @@ int __init init_cyclone_clock(void)
/* setup PMCC */
offset = (base + CYCLONE_PMCC_OFFSET);
- reg = (u64*)ioremap_nocache(offset, sizeof(u64));
+ reg = ioremap_nocache(offset, sizeof(u64));
if(!reg){
printk(KERN_ERR "Summit chipset: Could not find valid PMCC"
" register.\n");
@@ -81,7 +81,7 @@ int __init init_cyclone_clock(void)
/* setup MPCS */
offset = (base + CYCLONE_MPCS_OFFSET);
- reg = (u64*)ioremap_nocache(offset, sizeof(u64));
+ reg = ioremap_nocache(offset, sizeof(u64));
if(!reg){
printk(KERN_ERR "Summit chipset: Could not find valid MPCS"
" register.\n");
@@ -93,7 +93,7 @@ int __init init_cyclone_clock(void)
/* map in cyclone_timer */
offset = (base + CYCLONE_MPMC_OFFSET);
- cyclone_timer = (u32*)ioremap_nocache(offset, sizeof(u32));
+ cyclone_timer = ioremap_nocache(offset, sizeof(u32));
if(!cyclone_timer){
printk(KERN_ERR "Summit chipset: Could not find valid MPMC"
" register.\n");
@@ -110,7 +110,7 @@ int __init init_cyclone_clock(void)
printk(KERN_ERR "Summit chipset: Counter not counting!"
" DISABLED\n");
iounmap(cyclone_timer);
- cyclone_timer = 0;
+ cyclone_timer = NULL;
use_cyclone = 0;
return -ENODEV;
}
diff --git a/arch/ia64/kernel/head.S b/arch/ia64/kernel/head.S
index 44d540efa6d1..4e5e27540e27 100644
--- a/arch/ia64/kernel/head.S
+++ b/arch/ia64/kernel/head.S
@@ -178,7 +178,7 @@ swapper_pg_dir:
halt_msg:
stringz "Halting kernel\n"
- .text
+ .section .text.head,"ax"
.global start_ap
@@ -392,6 +392,8 @@ self: hint @pause
br.sptk.many self // endless loop
END(_start)
+ .text
+
GLOBAL_ENTRY(ia64_save_debug_regs)
alloc r16=ar.pfs,1,0,0,0
mov r20=ar.lc // preserve ar.lc
diff --git a/arch/ia64/kernel/init_task.c b/arch/ia64/kernel/init_task.c
index b69c397ed1bf..bc8efcad28b8 100644
--- a/arch/ia64/kernel/init_task.c
+++ b/arch/ia64/kernel/init_task.c
@@ -8,6 +8,7 @@
#include <linux/init.h>
#include <linux/mm.h>
+#include <linux/fs.h>
#include <linux/module.h>
#include <linux/sched.h>
#include <linux/init_task.h>
diff --git a/arch/ia64/kernel/iosapic.c b/arch/ia64/kernel/iosapic.c
index 91e6dc1e7baf..cfe4654838f4 100644
--- a/arch/ia64/kernel/iosapic.c
+++ b/arch/ia64/kernel/iosapic.c
@@ -142,7 +142,7 @@ struct iosapic_rte_info {
static struct iosapic_intr_info {
struct list_head rtes; /* RTEs using this vector (empty =>
* not an IOSAPIC interrupt) */
- int count; /* # of RTEs that shares this vector */
+ int count; /* # of registered RTEs */
u32 low32; /* current value of low word of
* Redirection table entry */
unsigned int dest; /* destination CPU physical ID */
@@ -313,7 +313,7 @@ mask_irq (unsigned int irq)
int rte_index;
struct iosapic_rte_info *rte;
- if (list_empty(&iosapic_intr_info[irq].rtes))
+ if (!iosapic_intr_info[irq].count)
return; /* not an IOSAPIC interrupt! */
/* set only the mask bit */
@@ -331,7 +331,7 @@ unmask_irq (unsigned int irq)
int rte_index;
struct iosapic_rte_info *rte;
- if (list_empty(&iosapic_intr_info[irq].rtes))
+ if (!iosapic_intr_info[irq].count)
return; /* not an IOSAPIC interrupt! */
low32 = iosapic_intr_info[irq].low32 &= ~IOSAPIC_MASK;
@@ -363,7 +363,7 @@ iosapic_set_affinity (unsigned int irq, cpumask_t mask)
dest = cpu_physical_id(first_cpu(mask));
- if (list_empty(&iosapic_intr_info[irq].rtes))
+ if (!iosapic_intr_info[irq].count)
return; /* not an IOSAPIC interrupt */
set_irq_affinity_info(irq, dest, redir);
@@ -542,7 +542,7 @@ iosapic_reassign_vector (int irq)
{
int new_irq;
- if (!list_empty(&iosapic_intr_info[irq].rtes)) {
+ if (iosapic_intr_info[irq].count) {
new_irq = create_irq();
if (new_irq < 0)
panic("%s: out of interrupt vectors!\n", __FUNCTION__);
@@ -560,7 +560,7 @@ iosapic_reassign_vector (int irq)
}
}
-static struct iosapic_rte_info *iosapic_alloc_rte (void)
+static struct iosapic_rte_info * __init_refok iosapic_alloc_rte (void)
{
int i;
struct iosapic_rte_info *rte;
@@ -677,7 +677,7 @@ get_target_cpu (unsigned int gsi, int irq)
* In case of vector shared by multiple RTEs, all RTEs that
* share the vector need to use the same destination CPU.
*/
- if (!list_empty(&iosapic_intr_info[irq].rtes))
+ if (iosapic_intr_info[irq].count)
return iosapic_intr_info[irq].dest;
/*
@@ -794,8 +794,9 @@ iosapic_register_intr (unsigned int gsi,
err = register_intr(gsi, irq, IOSAPIC_LOWEST_PRIORITY,
polarity, trigger);
if (err < 0) {
+ spin_unlock(&irq_desc[irq].lock);
irq = err;
- goto unlock_all;
+ goto unlock_iosapic_lock;
}
/*
@@ -811,7 +812,7 @@ iosapic_register_intr (unsigned int gsi,
gsi, (trigger == IOSAPIC_EDGE ? "edge" : "level"),
(polarity == IOSAPIC_POL_HIGH ? "high" : "low"),
cpu_logical_id(dest), dest, irq_to_vector(irq));
- unlock_all:
+
spin_unlock(&irq_desc[irq].lock);
unlock_iosapic_lock:
spin_unlock_irqrestore(&iosapic_lock, flags);
diff --git a/arch/ia64/kernel/irq_ia64.c b/arch/ia64/kernel/irq_ia64.c
index 91797c111162..c47c8acc96e3 100644
--- a/arch/ia64/kernel/irq_ia64.c
+++ b/arch/ia64/kernel/irq_ia64.c
@@ -85,8 +85,8 @@ DEFINE_PER_CPU(int[IA64_NUM_VECTORS], vector_irq) = {
[0 ... IA64_NUM_VECTORS - 1] = IA64_SPURIOUS_INT_VECTOR
};
-static cpumask_t vector_table[IA64_MAX_DEVICE_VECTORS] = {
- [0 ... IA64_MAX_DEVICE_VECTORS - 1] = CPU_MASK_NONE
+static cpumask_t vector_table[IA64_NUM_VECTORS] = {
+ [0 ... IA64_NUM_VECTORS - 1] = CPU_MASK_NONE
};
static int irq_status[NR_IRQS] = {
@@ -101,15 +101,6 @@ int check_irq_used(int irq)
return -1;
}
-static void reserve_irq(unsigned int irq)
-{
- unsigned long flags;
-
- spin_lock_irqsave(&vector_lock, flags);
- irq_status[irq] = IRQ_RSVD;
- spin_unlock_irqrestore(&vector_lock, flags);
-}
-
static inline int find_unassigned_irq(void)
{
int irq;
@@ -123,17 +114,18 @@ static inline int find_unassigned_irq(void)
static inline int find_unassigned_vector(cpumask_t domain)
{
cpumask_t mask;
- int pos;
+ int pos, vector;
cpus_and(mask, domain, cpu_online_map);
if (cpus_empty(mask))
return -EINVAL;
for (pos = 0; pos < IA64_NUM_DEVICE_VECTORS; pos++) {
- cpus_and(mask, domain, vector_table[pos]);
+ vector = IA64_FIRST_DEVICE_VECTOR + pos;
+ cpus_and(mask, domain, vector_table[vector]);
if (!cpus_empty(mask))
continue;
- return IA64_FIRST_DEVICE_VECTOR + pos;
+ return vector;
}
return -ENOSPC;
}
@@ -141,9 +133,12 @@ static inline int find_unassigned_vector(cpumask_t domain)
static int __bind_irq_vector(int irq, int vector, cpumask_t domain)
{
cpumask_t mask;
- int cpu, pos;
+ int cpu;
struct irq_cfg *cfg = &irq_cfg[irq];
+ BUG_ON((unsigned)irq >= NR_IRQS);
+ BUG_ON((unsigned)vector >= IA64_NUM_VECTORS);
+
cpus_and(mask, domain, cpu_online_map);
if (cpus_empty(mask))
return -EINVAL;
@@ -156,8 +151,7 @@ static int __bind_irq_vector(int irq, int vector, cpumask_t domain)
cfg->vector = vector;
cfg->domain = domain;
irq_status[irq] = IRQ_USED;
- pos = vector - IA64_FIRST_DEVICE_VECTOR;
- cpus_or(vector_table[pos], vector_table[pos], domain);
+ cpus_or(vector_table[vector], vector_table[vector], domain);
return 0;
}
@@ -174,7 +168,7 @@ int bind_irq_vector(int irq, int vector, cpumask_t domain)
static void __clear_irq_vector(int irq)
{
- int vector, cpu, pos;
+ int vector, cpu;
cpumask_t mask;
cpumask_t domain;
struct irq_cfg *cfg = &irq_cfg[irq];
@@ -189,8 +183,7 @@ static void __clear_irq_vector(int irq)
cfg->vector = IRQ_VECTOR_UNASSIGNED;
cfg->domain = CPU_MASK_NONE;
irq_status[irq] = IRQ_UNUSED;
- pos = vector - IA64_FIRST_DEVICE_VECTOR;
- cpus_andnot(vector_table[pos], vector_table[pos], domain);
+ cpus_andnot(vector_table[vector], vector_table[vector], domain);
}
static void clear_irq_vector(int irq)
@@ -212,9 +205,6 @@ assign_irq_vector (int irq)
vector = -ENOSPC;
spin_lock_irqsave(&vector_lock, flags);
- if (irq < 0) {
- goto out;
- }
for_each_online_cpu(cpu) {
domain = vector_allocation_domain(cpu);
vector = find_unassigned_vector(domain);
@@ -223,6 +213,8 @@ assign_irq_vector (int irq)
}
if (vector < 0)
goto out;
+ if (irq == AUTO_ASSIGN)
+ irq = vector;
BUG_ON(__bind_irq_vector(irq, vector, domain));
out:
spin_unlock_irqrestore(&vector_lock, flags);
@@ -288,7 +280,7 @@ static int __init parse_vector_domain(char *arg)
vector_domain_type = VECTOR_DOMAIN_PERCPU;
no_int_routing = 1;
}
- return 1;
+ return 0;
}
early_param("vector", parse_vector_domain);
#else
@@ -301,10 +293,14 @@ static cpumask_t vector_allocation_domain(int cpu)
void destroy_and_reserve_irq(unsigned int irq)
{
+ unsigned long flags;
+
dynamic_irq_cleanup(irq);
- clear_irq_vector(irq);
- reserve_irq(irq);
+ spin_lock_irqsave(&vector_lock, flags);
+ __clear_irq_vector(irq);
+ irq_status[irq] = IRQ_RSVD;
+ spin_unlock_irqrestore(&vector_lock, flags);
}
static int __reassign_irq_vector(int irq, int cpu)
diff --git a/arch/ia64/kernel/machvec.c b/arch/ia64/kernel/machvec.c
index 13df337508e7..7ccb228ceedc 100644
--- a/arch/ia64/kernel/machvec.c
+++ b/arch/ia64/kernel/machvec.c
@@ -13,14 +13,6 @@
struct ia64_machine_vector ia64_mv;
EXPORT_SYMBOL(ia64_mv);
-static __initdata const char *mvec_name;
-static __init int setup_mvec(char *s)
-{
- mvec_name = s;
- return 0;
-}
-early_param("machvec", setup_mvec);
-
static struct ia64_machine_vector * __init
lookup_machvec (const char *name)
{
@@ -41,7 +33,7 @@ machvec_init (const char *name)
struct ia64_machine_vector *mv;
if (!name)
- name = mvec_name ? mvec_name : acpi_get_sysname();
+ name = acpi_get_sysname();
mv = lookup_machvec(name);
if (!mv)
panic("generic kernel failed to find machine vector for"
@@ -51,6 +43,23 @@ machvec_init (const char *name)
printk(KERN_INFO "booting generic kernel on platform %s\n", name);
}
+void __init
+machvec_init_from_cmdline(const char *cmdline)
+{
+ char str[64];
+ const char *start;
+ char *end;
+
+ if (! (start = strstr(cmdline, "machvec=")) )
+ return machvec_init(NULL);
+
+ strlcpy(str, start + strlen("machvec="), sizeof(str));
+ if ( (end = strchr(str, ' ')) )
+ *end = '\0';
+
+ return machvec_init(str);
+}
+
#endif /* CONFIG_IA64_GENERIC */
void
diff --git a/arch/ia64/kernel/mca.c b/arch/ia64/kernel/mca.c
index 4b5daa3cc0fe..ff28620cb992 100644
--- a/arch/ia64/kernel/mca.c
+++ b/arch/ia64/kernel/mca.c
@@ -1750,8 +1750,17 @@ format_mca_init_stack(void *mca_data, unsigned long offset,
strncpy(p->comm, type, sizeof(p->comm)-1);
}
-/* Do per-CPU MCA-related initialization. */
+/* Caller prevents this from being called after init */
+static void * __init_refok mca_bootmem(void)
+{
+ void *p;
+ p = alloc_bootmem(sizeof(struct ia64_mca_cpu) * NR_CPUS +
+ KERNEL_STACK_SIZE);
+ return (void *)ALIGN((unsigned long)p, KERNEL_STACK_SIZE);
+}
+
+/* Do per-CPU MCA-related initialization. */
void __cpuinit
ia64_mca_cpu_init(void *cpu_data)
{
@@ -1763,11 +1772,7 @@ ia64_mca_cpu_init(void *cpu_data)
int cpu;
first_time = 0;
- mca_data = alloc_bootmem(sizeof(struct ia64_mca_cpu)
- * NR_CPUS + KERNEL_STACK_SIZE);
- mca_data = (void *)(((unsigned long)mca_data +
- KERNEL_STACK_SIZE - 1) &
- (-KERNEL_STACK_SIZE));
+ mca_data = mca_bootmem();
for (cpu = 0; cpu < NR_CPUS; cpu++) {
format_mca_init_stack(mca_data,
offsetof(struct ia64_mca_cpu, mca_stack),
diff --git a/arch/ia64/kernel/perfmon.c b/arch/ia64/kernel/perfmon.c
index b7133cabdbea..14b8e5a6222b 100644
--- a/arch/ia64/kernel/perfmon.c
+++ b/arch/ia64/kernel/perfmon.c
@@ -591,13 +591,13 @@ pfm_set_task_notify(struct task_struct *task)
struct thread_info *info;
info = (struct thread_info *) ((char *) task + IA64_TASK_SIZE);
- set_bit(TIF_NOTIFY_RESUME, &info->flags);
+ set_bit(TIF_PERFMON_WORK, &info->flags);
}
static inline void
pfm_clear_task_notify(void)
{
- clear_thread_flag(TIF_NOTIFY_RESUME);
+ clear_thread_flag(TIF_PERFMON_WORK);
}
static inline void
diff --git a/arch/ia64/kernel/process.c b/arch/ia64/kernel/process.c
index fa40cba43350..4158906c45aa 100644
--- a/arch/ia64/kernel/process.c
+++ b/arch/ia64/kernel/process.c
@@ -499,7 +499,8 @@ copy_thread (int nr, unsigned long clone_flags,
/* Copy partially mapped page list */
if (!retval)
- retval = ia32_copy_partial_page_list(p, clone_flags);
+ retval = ia32_copy_ia64_partial_page_list(p,
+ clone_flags);
}
#endif
@@ -728,7 +729,7 @@ flush_thread (void)
ia64_drop_fpu(current);
#ifdef CONFIG_IA32_SUPPORT
if (IS_IA32_PROCESS(task_pt_regs(current))) {
- ia32_drop_partial_page_list(current);
+ ia32_drop_ia64_partial_page_list(current);
current->thread.task_size = IA32_PAGE_OFFSET;
set_fs(USER_DS);
}
@@ -754,7 +755,7 @@ exit_thread (void)
pfm_release_debug_registers(current);
#endif
if (IS_IA32_PROCESS(task_pt_regs(current)))
- ia32_drop_partial_page_list(current);
+ ia32_drop_ia64_partial_page_list(current);
}
unsigned long
diff --git a/arch/ia64/kernel/setup.c b/arch/ia64/kernel/setup.c
index cf06fe799041..cd9a37a552c3 100644
--- a/arch/ia64/kernel/setup.c
+++ b/arch/ia64/kernel/setup.c
@@ -60,7 +60,6 @@
#include <asm/smp.h>
#include <asm/system.h>
#include <asm/unistd.h>
-#include <asm/system.h>
#if defined(CONFIG_SMP) && (IA64_CPU_SIZE > PAGE_SIZE)
# error "struct cpuinfo_ia64 too big!"
@@ -491,12 +490,17 @@ setup_arch (char **cmdline_p)
efi_init();
io_port_init();
- parse_early_param();
-
#ifdef CONFIG_IA64_GENERIC
- machvec_init(NULL);
+ /* machvec needs to be parsed from the command line
+ * before parse_early_param() is called to ensure
+ * that ia64_mv is initialised before any command line
+ * settings may cause console setup to occur
+ */
+ machvec_init_from_cmdline(*cmdline_p);
#endif
+ parse_early_param();
+
if (early_console_setup(*cmdline_p) == 0)
mark_bsp_online();
diff --git a/arch/ia64/kernel/smp.c b/arch/ia64/kernel/smp.c
index 9f72838db26e..4e446aa5f4ac 100644
--- a/arch/ia64/kernel/smp.c
+++ b/arch/ia64/kernel/smp.c
@@ -346,7 +346,7 @@ smp_flush_tlb_mm (struct mm_struct *mm)
}
/*
- * Run a function on another CPU
+ * Run a function on a specific CPU
* <func> The function to run. This must be fast and non-blocking.
* <info> An arbitrary pointer to pass to the function.
* <nonatomic> Currently unused.
@@ -366,9 +366,11 @@ smp_call_function_single (int cpuid, void (*func) (void *info), void *info, int
int me = get_cpu(); /* prevent preemption and reschedule on another processor */
if (cpuid == me) {
- printk(KERN_INFO "%s: trying to call self\n", __FUNCTION__);
+ local_irq_disable();
+ func(info);
+ local_irq_enable();
put_cpu();
- return -EBUSY;
+ return 0;
}
data.func = func;
@@ -468,7 +470,7 @@ smp_send_stop (void)
send_IPI_allbutself(IPI_CPU_STOP);
}
-int __init
+int
setup_profiling_timer (unsigned int multiplier)
{
return -EINVAL;
diff --git a/arch/ia64/kernel/smpboot.c b/arch/ia64/kernel/smpboot.c
index 9f5c90b594b9..62209dcf06d3 100644
--- a/arch/ia64/kernel/smpboot.c
+++ b/arch/ia64/kernel/smpboot.c
@@ -487,7 +487,7 @@ struct create_idle {
int cpu;
};
-void
+void __cpuinit
do_fork_idle(struct work_struct *work)
{
struct create_idle *c_idle =
@@ -497,7 +497,7 @@ do_fork_idle(struct work_struct *work)
complete(&c_idle->done);
}
-static int __devinit
+static int __cpuinit
do_boot_cpu (int sapicid, int cpu)
{
int timeout;
@@ -808,7 +808,7 @@ set_cpu_sibling_map(int cpu)
}
}
-int __devinit
+int __cpuinit
__cpu_up (unsigned int cpu)
{
int ret;
diff --git a/arch/ia64/kernel/time.c b/arch/ia64/kernel/time.c
index 627785c48ea9..98cfc90cab1d 100644
--- a/arch/ia64/kernel/time.c
+++ b/arch/ia64/kernel/time.c
@@ -52,7 +52,7 @@ static struct clocksource clocksource_itc = {
.name = "itc",
.rating = 350,
.read = itc_get_cycles,
- .mask = 0xffffffffffffffff,
+ .mask = CLOCKSOURCE_MASK(64),
.mult = 0, /*to be caluclated*/
.shift = 16,
.flags = CLOCK_SOURCE_IS_CONTINUOUS,
@@ -240,7 +240,21 @@ ia64_init_itm (void)
if (!nojitter)
itc_jitter_data.itc_jitter = 1;
#endif
- }
+ } else
+ /*
+ * ITC is drifty and we have not synchronized the ITCs in smpboot.c.
+ * ITC values may fluctuate significantly between processors.
+ * Clock should not be used for hrtimers. Mark itc as only
+ * useful for boot and testing.
+ *
+ * Note that jitter compensation is off! There is no point of
+ * synchronizing ITCs since they may be large differentials
+ * that change over time.
+ *
+ * The only way to fix this would be to repeatedly sync the
+ * ITCs. Until that time we have to avoid ITC.
+ */
+ clocksource_itc.rating = 50;
/* Setup the CPU local timer tick */
ia64_cpu_local_tick();
@@ -255,7 +269,7 @@ ia64_init_itm (void)
}
}
-static cycle_t itc_get_cycles()
+static cycle_t itc_get_cycles(void)
{
u64 lcycle, now, ret;
diff --git a/arch/ia64/kernel/vmlinux.lds.S b/arch/ia64/kernel/vmlinux.lds.S
index 860f251d2fc2..83e80677de70 100644
--- a/arch/ia64/kernel/vmlinux.lds.S
+++ b/arch/ia64/kernel/vmlinux.lds.S
@@ -50,6 +50,8 @@ SECTIONS
KPROBES_TEXT
*(.gnu.linkonce.t*)
}
+ .text.head : AT(ADDR(.text.head) - LOAD_OFFSET)
+ { *(.text.head) }
.text2 : AT(ADDR(.text2) - LOAD_OFFSET)
{ *(.text2) }
#ifdef CONFIG_SMP
generated by cgit v1.2.3 (git 2.39.1) at 2025-01-14 03:55:40 +0000