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This commit is contained in:
Tony Luck
2005-06-15 14:06:48 -07:00
parent 325a479c4c 1016888fb6
commit f2cbb4f019
1219 changed files with 51568 additions and 22050 deletions
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23
arch/ia64/kernel/acpi.c
View File

@@ -779,7 +779,7 @@ acpi_map_iosapic (acpi_handle handle, u32 depth, void *context, void **ret)
union acpi_object *obj;
struct acpi_table_iosapic *iosapic;
unsigned int gsi_base;
int node;
int pxm, node;
/* Only care about objects w/ a method that returns the MADT */
if (ACPI_FAILURE(acpi_evaluate_object(handle, "_MAT", NULL, &buffer)))
@@ -805,29 +805,16 @@ acpi_map_iosapic (acpi_handle handle, u32 depth, void *context, void **ret)
gsi_base = iosapic->global_irq_base;
acpi_os_free(buffer.pointer);
buffer.length = ACPI_ALLOCATE_BUFFER;
buffer.pointer = NULL;
/*
* OK, it's an IOSAPIC MADT entry, look for a _PXM method to tell
* OK, it's an IOSAPIC MADT entry, look for a _PXM value to tell
* us which node to associate this with.
*/
if (ACPI_FAILURE(acpi_evaluate_object(handle, "_PXM", NULL, &buffer)))
pxm = acpi_get_pxm(handle);
if (pxm < 0)
return AE_OK;
if (!buffer.length || !buffer.pointer)
return AE_OK;
obj = buffer.pointer;
if (obj->type != ACPI_TYPE_INTEGER ||
obj->integer.value >= MAX_PXM_DOMAINS) {
acpi_os_free(buffer.pointer);
return AE_OK;
}
node = pxm_to_nid_map[obj->integer.value];
acpi_os_free(buffer.pointer);
node = pxm_to_nid_map[pxm];
if (node >= MAX_NUMNODES || !node_online(node) ||
cpus_empty(node_to_cpumask(node)))

6
arch/ia64/kernel/entry.S
View File

@@ -777,7 +777,7 @@ GLOBAL_ENTRY(ia64_ret_from_ia32_execve)
st8.spill [r2]=r8 // store return value in slot for r8 and set unat bit
.mem.offset 8,0
st8.spill [r3]=r0 // clear error indication in slot for r10 and set unat bit
END(ia64_ret_from_ia32_execve_syscall)
END(ia64_ret_from_ia32_execve)
// fall through
#endif /* CONFIG_IA32_SUPPORT */
GLOBAL_ENTRY(ia64_leave_kernel)
@@ -1176,7 +1176,7 @@ ENTRY(notify_resume_user)
;;
(pNonSys) mov out2=0 // out2==0 => not a syscall
.fframe 16
.spillpsp ar.unat, 16 // (note that offset is relative to psp+0x10!)
.spillsp ar.unat, 16
st8 [sp]=r9,-16 // allocate space for ar.unat and save it
st8 [out1]=loc1,-8 // save ar.pfs, out1=&sigscratch
.body
@@ -1202,7 +1202,7 @@ GLOBAL_ENTRY(sys_rt_sigsuspend)
adds out2=8,sp // out2=&sigscratch->ar_pfs
;;
.fframe 16
.spillpsp ar.unat, 16 // (note that offset is relative to psp+0x10!)
.spillsp ar.unat, 16
st8 [sp]=r9,-16 // allocate space for ar.unat and save it
st8 [out2]=loc1,-8 // save ar.pfs, out2=&sigscratch
.body

4
arch/ia64/kernel/fsys.S
View File

@@ -460,9 +460,9 @@ EX(.fail_efault, ld8 r14=[r33]) // r14 <- *set
;;
st8 [r2]=r14 // update current->blocked with new mask
cmpxchg4.acq r14=[r9],r18,ar.ccv // current->thread_info->flags <- r18
cmpxchg4.acq r8=[r9],r18,ar.ccv // current->thread_info->flags <- r18
;;
cmp.ne p6,p0=r17,r14 // update failed?
cmp.ne p6,p0=r17,r8 // update failed?
(p6) br.cond.spnt.few 1b // yes -> retry
#ifdef CONFIG_SMP

8
arch/ia64/kernel/mca.c
View File

@@ -1103,8 +1103,6 @@ ia64_mca_cpe_int_caller(int cpe_irq, void *arg, struct pt_regs *ptregs)
return IRQ_HANDLED;
}
#endif /* CONFIG_ACPI */
/*
* ia64_mca_cpe_poll
*
@@ -1122,6 +1120,8 @@ ia64_mca_cpe_poll (unsigned long dummy)
platform_send_ipi(first_cpu(cpu_online_map), IA64_CPEP_VECTOR, IA64_IPI_DM_INT, 0);
}
#endif /* CONFIG_ACPI */
/*
* C portion of the OS INIT handler
*
@@ -1390,8 +1390,7 @@ ia64_mca_init(void)
register_percpu_irq(IA64_MCA_WAKEUP_VECTOR, &mca_wkup_irqaction);
#ifdef CONFIG_ACPI
/* Setup the CPEI/P vector and handler */
cpe_vector = acpi_request_vector(ACPI_INTERRUPT_CPEI);
/* Setup the CPEI/P handler */
register_percpu_irq(IA64_CPEP_VECTOR, &mca_cpep_irqaction);
#endif
@@ -1436,6 +1435,7 @@ ia64_mca_late_init(void)
#ifdef CONFIG_ACPI
/* Setup the CPEI/P vector and handler */
cpe_vector = acpi_request_vector(ACPI_INTERRUPT_CPEI);
init_timer(&cpe_poll_timer);
cpe_poll_timer.function = ia64_mca_cpe_poll;

4
arch/ia64/kernel/mca_drv.c
View File

@@ -132,8 +132,7 @@ mca_handler_bh(unsigned long paddr)
spin_unlock(&mca_bh_lock);
/* This process is about to be killed itself */
force_sig(SIGKILL, current);
schedule();
do_exit(SIGKILL);
}
/**
@@ -439,6 +438,7 @@ recover_from_read_error(slidx_table_t *slidx, peidx_table_t *peidx, pal_bus_chec
psr2 = (struct ia64_psr *)&pmsa->pmsa_ipsr;
psr2->cpl = 0;
psr2->ri = 0;
psr2->i = 0;
return 1;
}

18
arch/ia64/kernel/mca_drv_asm.S
View File

@@ -10,6 +10,7 @@
#include <asm/asmmacro.h>
#include <asm/processor.h>
#include <asm/ptrace.h>
GLOBAL_ENTRY(mca_handler_bhhook)
invala // clear RSE ?
@@ -20,12 +21,21 @@ GLOBAL_ENTRY(mca_handler_bhhook)
;;
alloc r16=ar.pfs,0,2,1,0 // make a new frame
;;
mov ar.rsc=0
;;
mov r13=IA64_KR(CURRENT) // current task pointer
;;
adds r12=IA64_TASK_THREAD_KSP_OFFSET,r13
mov r2=r13
;;
ld8 r12=[r12] // stack pointer
addl r22=IA64_RBS_OFFSET,r2
;;
mov ar.bspstore=r22
;;
addl sp=IA64_STK_OFFSET-IA64_PT_REGS_SIZE,r2
;;
adds r2=IA64_TASK_THREAD_ON_USTACK_OFFSET,r13
;;
st1 [r2]=r0 // clear current->thread.on_ustack flag
mov loc0=r16
movl loc1=mca_handler_bh // recovery C function
;;
@@ -34,7 +44,9 @@ GLOBAL_ENTRY(mca_handler_bhhook)
;;
mov loc1=rp
;;
br.call.sptk.many rp=b6 // not return ...
ssm psr.i
;;
br.call.sptk.many rp=b6 // does not return ...
;;
mov ar.pfs=loc0
mov rp=loc1

3
arch/ia64/kernel/minstate.h
View File

@@ -41,7 +41,7 @@
(pKStk) addl r3=THIS_CPU(ia64_mca_data),r3;; \
(pKStk) ld8 r3 = [r3];; \
(pKStk) addl r3=IA64_MCA_CPU_INIT_STACK_OFFSET,r3;; \
(pKStk) addl sp=IA64_STK_OFFSET-IA64_PT_REGS_SIZE,r3; \
(pKStk) addl r1=IA64_STK_OFFSET-IA64_PT_REGS_SIZE,r3; \
(pUStk) mov ar.rsc=0; /* set enforced lazy mode, pl 0, little-endian, loadrs=0 */ \
(pUStk) addl r22=IA64_RBS_OFFSET,r1; /* compute base of register backing store */ \
;; \
@@ -50,7 +50,6 @@
(pUStk) mov r23=ar.bspstore; /* save ar.bspstore */ \
(pUStk) dep r22=-1,r22,61,3; /* compute kernel virtual addr of RBS */ \
;; \
(pKStk) addl r1=-IA64_PT_REGS_SIZE,r1; /* if in kernel mode, use sp (r12) */ \
(pUStk) mov ar.bspstore=r22; /* switch to kernel RBS */ \
;; \
(pUStk) mov r18=ar.bsp; \

10
arch/ia64/kernel/module.c
View File

@@ -825,14 +825,16 @@ apply_relocate_add (Elf64_Shdr *sechdrs, const char *strtab, unsigned int symind
* XXX Should have an arch-hook for running this after final section
* addresses have been selected...
*/
/* See if gp can cover the entire core module: */
uint64_t gp = (uint64_t) mod->module_core + MAX_LTOFF / 2;
if (mod->core_size >= MAX_LTOFF)
uint64_t gp;
if (mod->core_size > MAX_LTOFF)
/*
* This takes advantage of fact that SHF_ARCH_SMALL gets allocated
* at the end of the module.
*/
gp = (uint64_t) mod->module_core + mod->core_size - MAX_LTOFF / 2;
gp = mod->core_size - MAX_LTOFF / 2;
else
gp = mod->core_size / 2;
gp = (uint64_t) mod->module_core + ((gp + 7) & -8);
mod->arch.gp = gp;
DEBUGP("%s: placing gp at 0x%lx\n", __FUNCTION__, gp);
}

218
arch/ia64/kernel/perfmon.c
View File

@@ -11,7 +11,7 @@
* Version Perfmon-2.x is a rewrite of perfmon-1.x
* by Stephane Eranian, Hewlett Packard Co.
*
* Copyright (C) 1999-2003, 2005 Hewlett Packard Co
* Copyright (C) 1999-2005 Hewlett Packard Co
* Stephane Eranian <eranian@hpl.hp.com>
* David Mosberger-Tang <davidm@hpl.hp.com>
*
@@ -497,6 +497,9 @@ typedef struct {
static pfm_stats_t pfm_stats[NR_CPUS];
static pfm_session_t pfm_sessions; /* global sessions information */
static spinlock_t pfm_alt_install_check = SPIN_LOCK_UNLOCKED;
static pfm_intr_handler_desc_t *pfm_alt_intr_handler;
static struct proc_dir_entry *perfmon_dir;
static pfm_uuid_t pfm_null_uuid = {0,};
@@ -606,6 +609,7 @@ DEFINE_PER_CPU(unsigned long, pfm_syst_info);
DEFINE_PER_CPU(struct task_struct *, pmu_owner);
DEFINE_PER_CPU(pfm_context_t *, pmu_ctx);
DEFINE_PER_CPU(unsigned long, pmu_activation_number);
EXPORT_PER_CPU_SYMBOL_GPL(pfm_syst_info);
/* forward declaration */
@@ -1265,6 +1269,8 @@ out:
}
EXPORT_SYMBOL(pfm_unregister_buffer_fmt);
extern void update_pal_halt_status(int);
static int
pfm_reserve_session(struct task_struct *task, int is_syswide, unsigned int cpu)
{
@@ -1311,6 +1317,11 @@ pfm_reserve_session(struct task_struct *task, int is_syswide, unsigned int cpu)
is_syswide,
cpu));
/*
* disable default_idle() to go to PAL_HALT
*/
update_pal_halt_status(0);
UNLOCK_PFS(flags);
return 0;
@@ -1318,7 +1329,7 @@ pfm_reserve_session(struct task_struct *task, int is_syswide, unsigned int cpu)
error_conflict:
DPRINT(("system wide not possible, conflicting session [%d] on CPU%d\n",
pfm_sessions.pfs_sys_session[cpu]->pid,
smp_processor_id()));
cpu));
abort:
UNLOCK_PFS(flags);
@@ -1366,6 +1377,12 @@ pfm_unreserve_session(pfm_context_t *ctx, int is_syswide, unsigned int cpu)
is_syswide,
cpu));
/*
* if possible, enable default_idle() to go into PAL_HALT
*/
if (pfm_sessions.pfs_task_sessions == 0 && pfm_sessions.pfs_sys_sessions == 0)
update_pal_halt_status(1);
UNLOCK_PFS(flags);
return 0;
@@ -4202,7 +4219,7 @@ pfm_context_load(pfm_context_t *ctx, void *arg, int count, struct pt_regs *regs)
DPRINT(("cannot load to [%d], invalid ctx_state=%d\n",
req->load_pid,
ctx->ctx_state));
return -EINVAL;
return -EBUSY;
}
DPRINT(("load_pid [%d] using_dbreg=%d\n", req->load_pid, ctx->ctx_fl_using_dbreg));
@@ -4704,16 +4721,26 @@ recheck:
if (task == current || ctx->ctx_fl_system) return 0;
/*
* if context is UNLOADED we are safe to go
* we are monitoring another thread
*/
if (state == PFM_CTX_UNLOADED) return 0;
/*
* no command can operate on a zombie context
*/
if (state == PFM_CTX_ZOMBIE) {
DPRINT(("cmd %d state zombie cannot operate on context\n", cmd));
return -EINVAL;
switch(state) {
case PFM_CTX_UNLOADED:
/*
* if context is UNLOADED we are safe to go
*/
return 0;
case PFM_CTX_ZOMBIE:
/*
* no command can operate on a zombie context
*/
DPRINT(("cmd %d state zombie cannot operate on context\n", cmd));
return -EINVAL;
case PFM_CTX_MASKED:
/*
* PMU state has been saved to software even though
* the thread may still be running.
*/
if (cmd != PFM_UNLOAD_CONTEXT) return 0;
}
/*
@@ -5532,26 +5559,32 @@ pfm_interrupt_handler(int irq, void *arg, struct pt_regs *regs)
int ret;
this_cpu = get_cpu();
min = pfm_stats[this_cpu].pfm_ovfl_intr_cycles_min;
max = pfm_stats[this_cpu].pfm_ovfl_intr_cycles_max;
if (likely(!pfm_alt_intr_handler)) {
min = pfm_stats[this_cpu].pfm_ovfl_intr_cycles_min;
max = pfm_stats[this_cpu].pfm_ovfl_intr_cycles_max;
start_cycles = ia64_get_itc();
start_cycles = ia64_get_itc();
ret = pfm_do_interrupt_handler(irq, arg, regs);
ret = pfm_do_interrupt_handler(irq, arg, regs);
total_cycles = ia64_get_itc();
total_cycles = ia64_get_itc();
/*
* don't measure spurious interrupts
*/
if (likely(ret == 0)) {
total_cycles -= start_cycles;
/*
* don't measure spurious interrupts
*/
if (likely(ret == 0)) {
total_cycles -= start_cycles;
if (total_cycles < min) pfm_stats[this_cpu].pfm_ovfl_intr_cycles_min = total_cycles;
if (total_cycles > max) pfm_stats[this_cpu].pfm_ovfl_intr_cycles_max = total_cycles;
if (total_cycles < min) pfm_stats[this_cpu].pfm_ovfl_intr_cycles_min = total_cycles;
if (total_cycles > max) pfm_stats[this_cpu].pfm_ovfl_intr_cycles_max = total_cycles;
pfm_stats[this_cpu].pfm_ovfl_intr_cycles += total_cycles;
pfm_stats[this_cpu].pfm_ovfl_intr_cycles += total_cycles;
}
}
else {
(*pfm_alt_intr_handler->handler)(irq, arg, regs);
}
put_cpu_no_resched();
return IRQ_HANDLED;
}
@@ -6402,6 +6435,141 @@ static struct irqaction perfmon_irqaction = {
.name = "perfmon"
};
static void
pfm_alt_save_pmu_state(void *data)
{
struct pt_regs *regs;
regs = ia64_task_regs(current);
DPRINT(("called\n"));
/*
* should not be necessary but
* let's take not risk
*/
pfm_clear_psr_up();
pfm_clear_psr_pp();
ia64_psr(regs)->pp = 0;
/*
* This call is required
* May cause a spurious interrupt on some processors
*/
pfm_freeze_pmu();
ia64_srlz_d();
}
void
pfm_alt_restore_pmu_state(void *data)
{
struct pt_regs *regs;
regs = ia64_task_regs(current);
DPRINT(("called\n"));
/*
* put PMU back in state expected
* by perfmon
*/
pfm_clear_psr_up();
pfm_clear_psr_pp();
ia64_psr(regs)->pp = 0;
/*
* perfmon runs with PMU unfrozen at all times
*/
pfm_unfreeze_pmu();
ia64_srlz_d();
}
int
pfm_install_alt_pmu_interrupt(pfm_intr_handler_desc_t *hdl)
{
int ret, i;
int reserve_cpu;
/* some sanity checks */
if (hdl == NULL || hdl->handler == NULL) return -EINVAL;
/* do the easy test first */
if (pfm_alt_intr_handler) return -EBUSY;
/* one at a time in the install or remove, just fail the others */
if (!spin_trylock(&pfm_alt_install_check)) {
return -EBUSY;
}
/* reserve our session */
for_each_online_cpu(reserve_cpu) {
ret = pfm_reserve_session(NULL, 1, reserve_cpu);
if (ret) goto cleanup_reserve;
}
/* save the current system wide pmu states */
ret = on_each_cpu(pfm_alt_save_pmu_state, NULL, 0, 1);
if (ret) {
DPRINT(("on_each_cpu() failed: %d\n", ret));
goto cleanup_reserve;
}
/* officially change to the alternate interrupt handler */
pfm_alt_intr_handler = hdl;
spin_unlock(&pfm_alt_install_check);
return 0;
cleanup_reserve:
for_each_online_cpu(i) {
/* don't unreserve more than we reserved */
if (i >= reserve_cpu) break;
pfm_unreserve_session(NULL, 1, i);
}
spin_unlock(&pfm_alt_install_check);
return ret;
}
EXPORT_SYMBOL_GPL(pfm_install_alt_pmu_interrupt);
int
pfm_remove_alt_pmu_interrupt(pfm_intr_handler_desc_t *hdl)
{
int i;
int ret;
if (hdl == NULL) return -EINVAL;
/* cannot remove someone else's handler! */
if (pfm_alt_intr_handler != hdl) return -EINVAL;
/* one at a time in the install or remove, just fail the others */
if (!spin_trylock(&pfm_alt_install_check)) {
return -EBUSY;
}
pfm_alt_intr_handler = NULL;
ret = on_each_cpu(pfm_alt_restore_pmu_state, NULL, 0, 1);
if (ret) {
DPRINT(("on_each_cpu() failed: %d\n", ret));
}
for_each_online_cpu(i) {
pfm_unreserve_session(NULL, 1, i);
}
spin_unlock(&pfm_alt_install_check);
return 0;
}
EXPORT_SYMBOL_GPL(pfm_remove_alt_pmu_interrupt);
/*
* perfmon initialization routine, called from the initcall() table
*/

55
arch/ia64/kernel/process.c
View File

@@ -50,7 +50,7 @@
#include "sigframe.h"
void (*ia64_mark_idle)(int);
static cpumask_t cpu_idle_map;
static DEFINE_PER_CPU(unsigned int, cpu_idle_state);
unsigned long boot_option_idle_override = 0;
EXPORT_SYMBOL(boot_option_idle_override);
@@ -173,7 +173,9 @@ do_notify_resume_user (sigset_t *oldset, struct sigscratch *scr, long in_syscall
ia64_do_signal(oldset, scr, in_syscall);
}
static int pal_halt = 1;
static int pal_halt = 1;
static int can_do_pal_halt = 1;
static int __init nohalt_setup(char * str)
{
pal_halt = 0;
@@ -181,16 +183,20 @@ static int __init nohalt_setup(char * str)
}
__setup("nohalt", nohalt_setup);
void
update_pal_halt_status(int status)
{
can_do_pal_halt = pal_halt && status;
}
/*
* We use this if we don't have any better idle routine..
*/
void
default_idle (void)
{
unsigned long pmu_active = ia64_getreg(_IA64_REG_PSR) & (IA64_PSR_PP | IA64_PSR_UP);
while (!need_resched())
if (pal_halt && !pmu_active)
if (can_do_pal_halt)
safe_halt();
else
cpu_relax();
@@ -223,20 +229,31 @@ static inline void play_dead(void)
}
#endif /* CONFIG_HOTPLUG_CPU */
void cpu_idle_wait(void)
{
int cpu;
cpumask_t map;
unsigned int cpu, this_cpu = get_cpu();
cpumask_t map;
for_each_online_cpu(cpu)
cpu_set(cpu, cpu_idle_map);
set_cpus_allowed(current, cpumask_of_cpu(this_cpu));
put_cpu();
wmb();
do {
ssleep(1);
cpus_and(map, cpu_idle_map, cpu_online_map);
} while (!cpus_empty(map));
cpus_clear(map);
for_each_online_cpu(cpu) {
per_cpu(cpu_idle_state, cpu) = 1;
cpu_set(cpu, map);
}
__get_cpu_var(cpu_idle_state) = 0;
wmb();
do {
ssleep(1);
for_each_online_cpu(cpu) {
if (cpu_isset(cpu, map) && !per_cpu(cpu_idle_state, cpu))
cpu_clear(cpu, map);
}
cpus_and(map, map, cpu_online_map);
} while (!cpus_empty(map));
}
EXPORT_SYMBOL_GPL(cpu_idle_wait);
@@ -244,7 +261,6 @@ void __attribute__((noreturn))
cpu_idle (void)
{
void (*mark_idle)(int) = ia64_mark_idle;
int cpu = smp_processor_id();
/* endless idle loop with no priority at all */
while (1) {
@@ -255,12 +271,13 @@ cpu_idle (void)
while (!need_resched()) {
void (*idle)(void);
if (__get_cpu_var(cpu_idle_state))
__get_cpu_var(cpu_idle_state) = 0;
rmb();
if (mark_idle)
(*mark_idle)(1);
if (cpu_isset(cpu, cpu_idle_map))
cpu_clear(cpu, cpu_idle_map);
rmb();
idle = pm_idle;
if (!idle)
idle = default_idle;

57
arch/ia64/kernel/ptrace.c
View File

@@ -635,11 +635,17 @@ ia64_flush_fph (struct task_struct *task)
{
struct ia64_psr *psr = ia64_psr(ia64_task_regs(task));
/*
* Prevent migrating this task while
* we're fiddling with the FPU state
*/
preempt_disable();
if (ia64_is_local_fpu_owner(task) && psr->mfh) {
psr->mfh = 0;
task->thread.flags |= IA64_THREAD_FPH_VALID;
ia64_save_fpu(&task->thread.fph[0]);
}
preempt_enable();
}
/*
@@ -692,16 +698,30 @@ convert_to_non_syscall (struct task_struct *child, struct pt_regs *pt,
unsigned long cfm)
{
struct unw_frame_info info, prev_info;
unsigned long ip, pr;
unsigned long ip, sp, pr;
unw_init_from_blocked_task(&info, child);
while (1) {
prev_info = info;
if (unw_unwind(&info) < 0)
return;
if (unw_get_rp(&info, &ip) < 0)
unw_get_sp(&info, &sp);
if ((long)((unsigned long)child + IA64_STK_OFFSET - sp)
< IA64_PT_REGS_SIZE) {
dprintk("ptrace.%s: ran off the top of the kernel "
"stack\n", __FUNCTION__);
return;
if (ip < FIXADDR_USER_END)
}
if (unw_get_pr (&prev_info, &pr) < 0) {
unw_get_rp(&prev_info, &ip);
dprintk("ptrace.%s: failed to read "
"predicate register (ip=0x%lx)\n",
__FUNCTION__, ip);
return;
}
if (unw_is_intr_frame(&info)
&& (pr & (1UL << PRED_USER_STACK)))
break;
}
@@ -1616,20 +1636,25 @@ syscall_trace_enter (long arg0, long arg1, long arg2, long arg3,
long arg4, long arg5, long arg6, long arg7,
struct pt_regs regs)
{
long syscall;
if (unlikely(current->audit_context)) {
if (IS_IA32_PROCESS(&regs))
syscall = regs.r1;
else
syscall = regs.r15;
audit_syscall_entry(current, syscall, arg0, arg1, arg2, arg3);
}
if (test_thread_flag(TIF_SYSCALL_TRACE)
if (test_thread_flag(TIF_SYSCALL_TRACE)
&& (current->ptrace & PT_PTRACED))
syscall_trace();
if (unlikely(current->audit_context)) {
long syscall;
int arch;
if (IS_IA32_PROCESS(&regs)) {
syscall = regs.r1;
arch = AUDIT_ARCH_I386;
} else {
syscall = regs.r15;
arch = AUDIT_ARCH_IA64;
}
audit_syscall_entry(current, arch, syscall, arg0, arg1, arg2, arg3);
}
}
/* "asmlinkage" so the input arguments are preserved... */
@@ -1640,7 +1665,7 @@ syscall_trace_leave (long arg0, long arg1, long arg2, long arg3,
struct pt_regs regs)
{
if (unlikely(current->audit_context))
audit_syscall_exit(current, regs.r8);
audit_syscall_exit(current, AUDITSC_RESULT(regs.r10), regs.r8);
if (test_thread_flag(TIF_SYSCALL_TRACE)
&& (current->ptrace & PT_PTRACED))

3
arch/ia64/kernel/setup.c
View File

@@ -720,7 +720,8 @@ cpu_init (void)
ia64_set_kr(IA64_KR_PT_BASE, __pa(ia64_imva(empty_zero_page)));
/*
* Initialize default control register to defer all speculative faults. The
* Initialize default control register to defer speculative faults except
* for those arising from TLB misses, which are not deferred. The
* kernel MUST NOT depend on a particular setting of these bits (in other words,
* the kernel must have recovery code for all speculative accesses). Turn on
* dcr.lc as per recommendation by the architecture team. Most IA-32 apps

3
arch/ia64/kernel/signal.c
View File

@@ -224,7 +224,8 @@ ia64_rt_sigreturn (struct sigscratch *scr)
* could be corrupted.
*/
retval = (long) &ia64_leave_kernel;
if (test_thread_flag(TIF_SYSCALL_TRACE))
if (test_thread_flag(TIF_SYSCALL_TRACE)
|| test_thread_flag(TIF_SYSCALL_AUDIT))
/*
* strace expects to be notified after sigreturn returns even though the
* context to which we return may not be in the middle of a syscall.

2
arch/ia64/kernel/smpboot.c
View File

@@ -624,7 +624,7 @@ static struct {
__u16 thread_id;
__u16 proc_fixed_addr;
__u8 valid;
}mt_info[NR_CPUS] __devinit;
} mt_info[NR_CPUS] __devinitdata;
#ifdef CONFIG_HOTPLUG_CPU
static inline void

7
arch/ia64/kernel/sys_ia64.c
View File

@@ -182,13 +182,6 @@ do_mmap2 (unsigned long addr, unsigned long len, int prot, int flags, int fd, un
}
}
/*
* A zero mmap always succeeds in Linux, independent of whether or not the
* remaining arguments are valid.
*/
if (len == 0)
goto out;
/* Careful about overflows.. */
len = PAGE_ALIGN(len);
if (!len || len > TASK_SIZE) {

29
arch/ia64/kernel/traps.c
View File

@@ -111,6 +111,24 @@ ia64_bad_break (unsigned long break_num, struct pt_regs *regs)
siginfo_t siginfo;
int sig, code;
/* break.b always sets cr.iim to 0, which causes problems for
* debuggers. Get the real break number from the original instruction,
* but only for kernel code. User space break.b is left alone, to
* preserve the existing behaviour. All break codings have the same
* format, so there is no need to check the slot type.
*/
if (break_num == 0 && !user_mode(regs)) {
struct ia64_psr *ipsr = ia64_psr(regs);
unsigned long *bundle = (unsigned long *)regs->cr_iip;
unsigned long slot;
switch (ipsr->ri) {
case 0: slot = (bundle[0] >> 5); break;
case 1: slot = (bundle[0] >> 46) | (bundle[1] << 18); break;
default: slot = (bundle[1] >> 23); break;
}
break_num = ((slot >> 36 & 1) << 20) | (slot >> 6 & 0xfffff);
}
/* SIGILL, SIGFPE, SIGSEGV, and SIGBUS want these field initialized: */
siginfo.si_addr = (void __user *) (regs->cr_iip + ia64_psr(regs)->ri);
siginfo.si_imm = break_num;
@@ -202,13 +220,21 @@ disabled_fph_fault (struct pt_regs *regs)
/* first, grant user-level access to fph partition: */
psr->dfh = 0;
/*
* Make sure that no other task gets in on this processor
* while we're claiming the FPU
*/
preempt_disable();
#ifndef CONFIG_SMP
{
struct task_struct *fpu_owner
= (struct task_struct *)ia64_get_kr(IA64_KR_FPU_OWNER);
if (ia64_is_local_fpu_owner(current))
if (ia64_is_local_fpu_owner(current)) {
preempt_enable_no_resched();
return;
}
if (fpu_owner)
ia64_flush_fph(fpu_owner);
@@ -226,6 +252,7 @@ disabled_fph_fault (struct pt_regs *regs)
*/
psr->mfh = 1;
}
preempt_enable_no_resched();
}
static inline int