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Merge branches 'x86-fixes-for-linus', 'sched-fixes-for-linus', 'timers-fixes-for-linus', 'irq-fixes-for-linus' and 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

Browse Source 
* 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86-32, fpu: Fix FPU exception handling on non-SSE systems
  x86, hibernate: Initialize mmu_cr4_features during boot
  x86-32, NUMA: Fix ACPI NUMA init broken by recent x86-64 change
  x86: visws: Fixup irq overhaul fallout

* 'sched-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  sched: Clean up rebalance_domains() load-balance interval calculation

* 'timers-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86/mrst/vrtc: Fix boot crash in mrst_rtc_init()
  rtc, x86/mrst/vrtc: Fix boot crash in rtc_read_alarm()

* 'irq-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  genirq: Fix cpumask leak in __setup_irq()

* 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  perf probe: Fix listing incorrect line number with inline function
  perf probe: Fix to find recursively inlined function
  perf probe: Fix multiple --vars options behavior
  perf probe: Fix to remove redundant close
  perf probe: Fix to ensure function declared file
This commit is contained in:
Linus Torvalds 2011-04-07 12:12:58 -07:00
commit 8b9686ff4d
11 changed files with 152 additions and 90 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
arch/x86/include/asm/i387.h
View File

@ -237,7 +237,7 @@ static inline void fpu_save_init(struct fpu *fpu)
} else if (use_fxsr()) {
fpu_fxsave(fpu);
} else {
asm volatile("fsave %[fx]; fwait"
asm volatile("fnsave %[fx]; fwait"
: [fx] "=m" (fpu->state->fsave));
return;
}

5
arch/x86/kernel/setup.c
View File

@ -976,6 +976,11 @@ void __init setup_arch(char **cmdline_p)
paging_init();
x86_init.paging.pagetable_setup_done(swapper_pg_dir);
if (boot_cpu_data.cpuid_level >= 0) {
/* A CPU has %cr4 if and only if it has CPUID */
mmu_cr4_features = read_cr4();
}
#ifdef CONFIG_X86_32
/* sync back kernel address range */
clone_pgd_range(initial_page_table + KERNEL_PGD_BOUNDARY,

4
arch/x86/mm/srat_32.c
View File

@ -211,10 +211,12 @@ int __init get_memcfg_from_srat(void)
{
int i, j, nid;
if (srat_disabled())
goto out_fail;
if (acpi_numa_init() < 0)
goto out_fail;
if (num_memory_chunks == 0) {
printk(KERN_DEBUG
"could not find any ACPI SRAT memory areas.\n");

4
arch/x86/platform/mrst/vrtc.c
View File

@ -100,9 +100,11 @@ int vrtc_set_mmss(unsigned long nowtime)
void __init mrst_rtc_init(void)
{
unsigned long vrtc_paddr = sfi_mrtc_array[0].phys_addr;
unsigned long vrtc_paddr;
sfi_table_parse(SFI_SIG_MRTC, NULL, NULL, sfi_parse_mrtc);
vrtc_paddr = sfi_mrtc_array[0].phys_addr;
if (!sfi_mrtc_num || !vrtc_paddr)
return;

20
arch/x86/platform/visws/visws_quirks.c
View File

@ -471,15 +471,7 @@ static unsigned int startup_piix4_master_irq(struct irq_data *data)
{
legacy_pic->init(0);
enable_cobalt_irq(data);
}
static void end_piix4_master_irq(struct irq_data *data)
{
unsigned long flags;
spin_lock_irqsave(&cobalt_lock, flags);
enable_cobalt_irq(data);
spin_unlock_irqrestore(&cobalt_lock, flags);
return 0;
}
static struct irq_chip piix4_master_irq_type = {
@ -492,7 +484,7 @@ static void pii4_mask(struct irq_data *data) { }
static struct irq_chip piix4_virtual_irq_type = {
.name = "PIIX4-virtual",
.mask = pii4_mask,
.irq_mask = pii4_mask,
};
/*
@ -580,9 +572,9 @@ static struct irqaction cascade_action = {
static inline void set_piix4_virtual_irq_type(void)
{
piix4_virtual_irq_type.enable = i8259A_chip.unmask;
piix4_virtual_irq_type.disable = i8259A_chip.mask;
piix4_virtual_irq_type.unmask = i8259A_chip.unmask;
piix4_virtual_irq_type.irq_enable = i8259A_chip.irq_unmask;
piix4_virtual_irq_type.irq_disable = i8259A_chip.irq_mask;
piix4_virtual_irq_type.irq_unmask = i8259A_chip.irq_unmask;
}
static void __init visws_pre_intr_init(void)
@ -599,7 +591,7 @@ static void __init visws_pre_intr_init(void)
else if (i == CO_IRQ_IDE0)
chip = &cobalt_irq_type;
else if (i == CO_IRQ_IDE1)
>chip = &cobalt_irq_type;
chip = &cobalt_irq_type;
else if (i == CO_IRQ_8259)
chip = &piix4_master_irq_type;
else if (i < CO_IRQ_APIC0)

7
drivers/rtc/rtc-mrst.c
View File

@ -342,6 +342,8 @@ vrtc_mrst_do_probe(struct device *dev, struct resource *iomem, int rtc_irq)
mrst_rtc.irq = rtc_irq;
mrst_rtc.iomem = iomem;
mrst_rtc.dev = dev;
dev_set_drvdata(dev, &mrst_rtc);
mrst_rtc.rtc = rtc_device_register(driver_name, dev,
&mrst_rtc_ops, THIS_MODULE);
@ -350,8 +352,6 @@ vrtc_mrst_do_probe(struct device *dev, struct resource *iomem, int rtc_irq)
goto cleanup0;
}
mrst_rtc.dev = dev;
dev_set_drvdata(dev, &mrst_rtc);
rename_region(iomem, dev_name(&mrst_rtc.rtc->dev));
spin_lock_irq(&rtc_lock);
@ -376,9 +376,10 @@ vrtc_mrst_do_probe(struct device *dev, struct resource *iomem, int rtc_irq)
return 0;
cleanup1:
mrst_rtc.dev = NULL;
rtc_device_unregister(mrst_rtc.rtc);
cleanup0:
dev_set_drvdata(dev, NULL);
mrst_rtc.dev = NULL;
release_region(iomem->start, iomem->end + 1 - iomem->start);
dev_err(dev, "rtc-mrst: unable to initialise\n");
return retval;

1
kernel/irq/manage.c
View File

@ -1051,6 +1051,7 @@ __setup_irq(unsigned int irq, struct irq_desc *desc, struct irqaction *new)
register_irq_proc(irq, desc);
new->dir = NULL;
register_handler_proc(irq, new);
free_cpumask_var(mask);
return 0;

3
kernel/sched.c
View File

@ -6331,6 +6331,9 @@ migration_call(struct notifier_block *nfb, unsigned long action, void *hcpu)
break;
#endif
}
update_max_interval();
return NOTIFY_OK;
}

16
kernel/sched_fair.c
View File

@ -3820,6 +3820,17 @@ void select_nohz_load_balancer(int stop_tick)
static DEFINE_SPINLOCK(balancing);
static unsigned long __read_mostly max_load_balance_interval = HZ/10;
/*
* Scale the max load_balance interval with the number of CPUs in the system.
* This trades load-balance latency on larger machines for less cross talk.
*/
static void update_max_interval(void)
{
max_load_balance_interval = HZ*num_online_cpus()/10;
}
/*
* It checks each scheduling domain to see if it is due to be balanced,
* and initiates a balancing operation if so.
@ -3849,10 +3860,7 @@ static void rebalance_domains(int cpu, enum cpu_idle_type idle)
/* scale ms to jiffies */
interval = msecs_to_jiffies(interval);
if (unlikely(!interval))
interval = 1;
if (interval > HZ*num_online_cpus()/10)
interval = HZ*num_online_cpus()/10;
interval = clamp(interval, 1UL, max_load_balance_interval);
need_serialize = sd->flags & SD_SERIALIZE;

19
tools/perf/util/probe-event.c
View File

@ -234,7 +234,6 @@ static int try_to_find_probe_trace_events(struct perf_probe_event *pev,
/* Searching trace events corresponding to probe event */
ntevs = find_probe_trace_events(fd, pev, tevs, max_tevs);
close(fd);
if (ntevs > 0) { /* Succeeded to find trace events */
pr_debug("find %d probe_trace_events.\n", ntevs);
@ -388,7 +387,6 @@ int show_line_range(struct line_range *lr, const char *module)
}
ret = find_line_range(fd, lr);
close(fd);
if (ret == 0) {
pr_warning("Specified source line is not found.\n");
return -ENOENT;
@ -512,19 +510,18 @@ int show_available_vars(struct perf_probe_event *pevs, int npevs,
if (ret < 0)
return ret;
fd = open_vmlinux(module);
if (fd < 0) {
pr_warning("Failed to open debug information file.\n");
return fd;
}
setup_pager();
for (i = 0; i < npevs && ret >= 0; i++)
for (i = 0; i < npevs && ret >= 0; i++) {
fd = open_vmlinux(module);
if (fd < 0) {
pr_warning("Failed to open debug information file.\n");
ret = fd;
break;
}
ret = show_available_vars_at(fd, &pevs[i], max_vls, _filter,
externs);
close(fd);
}
return ret;
}

161
tools/perf/util/probe-finder.c
View File

@ -273,6 +273,25 @@ static const char *cu_get_comp_dir(Dwarf_Die *cu_die)
return dwarf_formstring(&attr);
}
/* Get a line number and file name for given address */
static int cu_find_lineinfo(Dwarf_Die *cudie, unsigned long addr,
const char **fname, int *lineno)
{
Dwarf_Line *line;
Dwarf_Addr laddr;
line = dwarf_getsrc_die(cudie, (Dwarf_Addr)addr);
if (line && dwarf_lineaddr(line, &laddr) == 0 &&
addr == (unsigned long)laddr && dwarf_lineno(line, lineno) == 0) {
*fname = dwarf_linesrc(line, NULL, NULL);
if (!*fname)
/* line number is useless without filename */
*lineno = 0;
}
return *lineno ?: -ENOENT;
}
/* Compare diename and tname */
static bool die_compare_name(Dwarf_Die *dw_die, const char *tname)
{
@ -497,7 +516,20 @@ static int __die_find_inline_cb(Dwarf_Die *die_mem, void *data)
static Dwarf_Die *die_find_inlinefunc(Dwarf_Die *sp_die, Dwarf_Addr addr,
Dwarf_Die *die_mem)
{
return die_find_child(sp_die, __die_find_inline_cb, &addr, die_mem);
Dwarf_Die tmp_die;
sp_die = die_find_child(sp_die, __die_find_inline_cb, &addr, &tmp_die);
if (!sp_die)
return NULL;
/* Inlined function could be recursive. Trace it until fail */
while (sp_die) {
memcpy(die_mem, sp_die, sizeof(Dwarf_Die));
sp_die = die_find_child(sp_die, __die_find_inline_cb, &addr,
&tmp_die);
}
return die_mem;
}
/* Walker on lines (Note: line number will not be sorted) */
@ -1395,6 +1427,10 @@ static int probe_point_search_cb(Dwarf_Die *sp_die, void *data)
!die_compare_name(sp_die, pp->function))
return DWARF_CB_OK;
/* Check declared file */
if (pp->file && strtailcmp(pp->file, dwarf_decl_file(sp_die)))
return DWARF_CB_OK;
pf->fname = dwarf_decl_file(sp_die);
if (pp->line) { /* Function relative line */
dwarf_decl_line(sp_die, &pf->lno);
@ -1451,6 +1487,7 @@ static int find_probes(int fd, struct probe_finder *pf)
if (!dbg) {
pr_warning("No debug information found in the vmlinux - "
"please rebuild with CONFIG_DEBUG_INFO=y.\n");
close(fd); /* Without dwfl_end(), fd isn't closed. */
return -EBADF;
}
@ -1686,11 +1723,9 @@ int find_perf_probe_point(unsigned long addr, struct perf_probe_point *ppt)
Dwarf_Die cudie, spdie, indie;
Dwarf *dbg = NULL;
Dwfl *dwfl = NULL;
Dwarf_Line *line;
Dwarf_Addr laddr, eaddr, bias = 0;
const char *tmp;
int lineno, ret = 0;
bool found = false;
Dwarf_Addr _addr, baseaddr, bias = 0;
const char *fname = NULL, *func = NULL, *tmp;
int baseline = 0, lineno = 0, ret = 0;
/* Open the live linux kernel */
dbg = dwfl_init_live_kernel_dwarf(addr, &dwfl, &bias);
@ -1711,68 +1746,79 @@ int find_perf_probe_point(unsigned long addr, struct perf_probe_point *ppt)
goto end;
}
/* Find a corresponding line */
line = dwarf_getsrc_die(&cudie, (Dwarf_Addr)addr);
if (line) {
if (dwarf_lineaddr(line, &laddr) == 0 &&
(Dwarf_Addr)addr == laddr &&
dwarf_lineno(line, &lineno) == 0) {
tmp = dwarf_linesrc(line, NULL, NULL);
if (tmp) {
ppt->line = lineno;
ppt->file = strdup(tmp);
if (ppt->file == NULL) {
ret = -ENOMEM;
goto end;
}
found = true;
/* Find a corresponding line (filename and lineno) */
cu_find_lineinfo(&cudie, addr, &fname, &lineno);
/* Don't care whether it failed or not */
/* Find a corresponding function (name, baseline and baseaddr) */
if (die_find_real_subprogram(&cudie, (Dwarf_Addr)addr, &spdie)) {
/* Get function entry information */
tmp = dwarf_diename(&spdie);
if (!tmp ||
dwarf_entrypc(&spdie, &baseaddr) != 0 ||
dwarf_decl_line(&spdie, &baseline) != 0)
goto post;
func = tmp;
if (addr == (unsigned long)baseaddr)
/* Function entry - Relative line number is 0 */
lineno = baseline;
else if (die_find_inlinefunc(&spdie, (Dwarf_Addr)addr,
&indie)) {
if (dwarf_entrypc(&indie, &_addr) == 0 &&
_addr == addr)
/*
* addr is at an inline function entry.
* In this case, lineno should be the call-site
* line number.
*/
lineno = die_get_call_lineno(&indie);
else {
/*
* addr is in an inline function body.
* Since lineno points one of the lines
* of the inline function, baseline should
* be the entry line of the inline function.
*/
tmp = dwarf_diename(&indie);
if (tmp &&
dwarf_decl_line(&spdie, &baseline) == 0)
func = tmp;
}
}
}
/* Find a corresponding function */
if (die_find_real_subprogram(&cudie, (Dwarf_Addr)addr, &spdie)) {
tmp = dwarf_diename(&spdie);
if (!tmp || dwarf_entrypc(&spdie, &eaddr) != 0)
goto end;
post:
/* Make a relative line number or an offset */
if (lineno)
ppt->line = lineno - baseline;
else if (func)
ppt->offset = addr - (unsigned long)baseaddr;
if (ppt->line) {
if (die_find_inlinefunc(&spdie, (Dwarf_Addr)addr,
&indie)) {
/* addr in an inline function */
tmp = dwarf_diename(&indie);
if (!tmp)
goto end;
ret = dwarf_decl_line(&indie, &lineno);
} else {
if (eaddr == addr) { /* Function entry */
lineno = ppt->line;
ret = 0;
} else
ret = dwarf_decl_line(&spdie, &lineno);
}
if (ret == 0) {
/* Make a relative line number */
ppt->line -= lineno;
goto found;
}
}
/* We don't have a line number, let's use offset */
ppt->offset = addr - (unsigned long)eaddr;
found:
ppt->function = strdup(tmp);
/* Duplicate strings */
if (func) {
ppt->function = strdup(func);
if (ppt->function == NULL) {
ret = -ENOMEM;
goto end;
}
found = true;
}
if (fname) {
ppt->file = strdup(fname);
if (ppt->file == NULL) {
if (ppt->function) {
free(ppt->function);
ppt->function = NULL;
}
ret = -ENOMEM;
goto end;
}
}
end:
if (dwfl)
dwfl_end(dwfl);
if (ret >= 0)
ret = found ? 1 : 0;
if (ret == 0 && (fname || func))
ret = 1; /* Found a point */
return ret;
}
@ -1840,6 +1886,10 @@ static int line_range_search_cb(Dwarf_Die *sp_die, void *data)
struct line_finder *lf = param->data;
struct line_range *lr = lf->lr;
/* Check declared file */
if (lr->file && strtailcmp(lr->file, dwarf_decl_file(sp_die)))
return DWARF_CB_OK;
if (dwarf_tag(sp_die) == DW_TAG_subprogram &&
die_compare_name(sp_die, lr->function)) {
lf->fname = dwarf_decl_file(sp_die);
@ -1892,6 +1942,7 @@ int find_line_range(int fd, struct line_range *lr)
if (!dbg) {
pr_warning("No debug information found in the vmlinux - "
"please rebuild with CONFIG_DEBUG_INFO=y.\n");
close(fd); /* Without dwfl_end(), fd isn't closed. */
return -EBADF;
}