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authorLinus Torvalds <torvalds@linux-foundation.org>2016-10-07 21:38:00 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2016-10-07 21:38:00 -0700
commitb66484cd74706fa8681d051840fe4b18a3da40ff (patch)
treee8215e7c25661d25f84abc4b98140c2062d6d5de /arch
parentc913fc4146ba7c280e074558d0a461e5c6f07c8a (diff)
parent05fd007e46296afb24d15c7d589d535e5a5b9d5c (diff)
download96b-common-b66484cd74706fa8681d051840fe4b18a3da40ff.tar.gz
Merge branch 'akpm' (patches from Andrew)
Merge updates from Andrew Morton: - fsnotify updates - ocfs2 updates - all of MM * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (127 commits) console: don't prefer first registered if DT specifies stdout-path cred: simpler, 1D supplementary groups CREDITS: update Pavel's information, add GPG key, remove snail mail address mailmap: add Johan Hovold .gitattributes: set git diff driver for C source code files uprobes: remove function declarations from arch/{mips,s390} spelling.txt: "modeled" is spelt correctly nmi_backtrace: generate one-line reports for idle cpus arch/tile: adopt the new nmi_backtrace framework nmi_backtrace: do a local dump_stack() instead of a self-NMI nmi_backtrace: add more trigger_*_cpu_backtrace() methods min/max: remove sparse warnings when they're nested Documentation/filesystems/proc.txt: add more description for maps/smaps mm, proc: fix region lost in /proc/self/smaps proc: fix timerslack_ns CAP_SYS_NICE check when adjusting self proc: add LSM hook checks to /proc/<tid>/timerslack_ns proc: relax /proc/<tid>/timerslack_ns capability requirements meminfo: break apart a very long seq_printf with #ifdefs seq/proc: modify seq_put_decimal_[u]ll to take a const char *, not char proc: faster /proc/*/status ...
Diffstat (limited to 'arch')
-rw-r--r--arch/alpha/Kconfig1
-rw-r--r--arch/alpha/kernel/vmlinux.lds.S1
-rw-r--r--arch/arc/kernel/vmlinux.lds.S1
-rw-r--r--arch/arm/Kconfig1
-rw-r--r--arch/arm/include/asm/irq.h5
-rw-r--r--arch/arm/kernel/smp.c13
-rw-r--r--arch/arm/kernel/vmlinux-xip.lds.S1
-rw-r--r--arch/arm/kernel/vmlinux.lds.S1
-rw-r--r--arch/arm64/Kconfig2
-rw-r--r--arch/arm64/kernel/vmlinux.lds.S1
-rw-r--r--arch/avr32/kernel/vmlinux.lds.S1
-rw-r--r--arch/blackfin/kernel/vmlinux.lds.S1
-rw-r--r--arch/c6x/kernel/vmlinux.lds.S1
-rw-r--r--arch/cris/kernel/vmlinux.lds.S1
-rw-r--r--arch/frv/kernel/vmlinux.lds.S1
-rw-r--r--arch/h8300/kernel/vmlinux.lds.S1
-rw-r--r--arch/hexagon/kernel/vmlinux.lds.S1
-rw-r--r--arch/ia64/include/asm/atomic.h16
-rw-r--r--arch/ia64/kernel/vmlinux.lds.S1
-rw-r--r--arch/m32r/kernel/vmlinux.lds.S1
-rw-r--r--arch/m68k/kernel/vmlinux-nommu.lds1
-rw-r--r--arch/m68k/kernel/vmlinux-std.lds1
-rw-r--r--arch/m68k/kernel/vmlinux-sun3.lds1
-rw-r--r--arch/metag/kernel/vmlinux.lds.S1
-rw-r--r--arch/microblaze/kernel/vmlinux.lds.S1
-rw-r--r--arch/mips/Kconfig1
-rw-r--r--arch/mips/include/asm/irq.h5
-rw-r--r--arch/mips/include/asm/pgtable.h2
-rw-r--r--arch/mips/include/asm/uprobes.h12
-rw-r--r--arch/mips/kernel/process.c11
-rw-r--r--arch/mips/kernel/vmlinux.lds.S1
-rw-r--r--arch/mn10300/kernel/vmlinux.lds.S1
-rw-r--r--arch/nios2/kernel/vmlinux.lds.S1
-rw-r--r--arch/openrisc/kernel/vmlinux.lds.S1
-rw-r--r--arch/parisc/Kconfig1
-rw-r--r--arch/parisc/kernel/vmlinux.lds.S1
-rw-r--r--arch/powerpc/Kconfig1
-rw-r--r--arch/powerpc/include/asm/mmzone.h3
-rw-r--r--arch/powerpc/kernel/fadump.c5
-rw-r--r--arch/powerpc/kernel/vmlinux.lds.S1
-rw-r--r--arch/s390/Kconfig2
-rw-r--r--arch/s390/include/asm/uprobes.h10
-rw-r--r--arch/s390/kernel/compat_linux.c4
-rw-r--r--arch/s390/kernel/vmlinux.lds.S1
-rw-r--r--arch/score/kernel/vmlinux.lds.S1
-rw-r--r--arch/sh/kernel/vmlinux.lds.S1
-rw-r--r--arch/sparc/Kconfig1
-rw-r--r--arch/sparc/include/asm/irq_64.h5
-rw-r--r--arch/sparc/kernel/process_64.c10
-rw-r--r--arch/sparc/kernel/vmlinux.lds.S1
-rw-r--r--arch/tile/Kconfig1
-rw-r--r--arch/tile/include/asm/irq.h5
-rw-r--r--arch/tile/kernel/entry.S2
-rw-r--r--arch/tile/kernel/pmc.c3
-rw-r--r--arch/tile/kernel/process.c73
-rw-r--r--arch/tile/kernel/traps.c9
-rw-r--r--arch/tile/kernel/vmlinux.lds.S1
-rw-r--r--arch/um/kernel/dyn.lds.S1
-rw-r--r--arch/um/kernel/uml.lds.S1
-rw-r--r--arch/unicore32/kernel/vmlinux.lds.S1
-rw-r--r--arch/x86/Kconfig2
-rw-r--r--arch/x86/include/asm/irq.h5
-rw-r--r--arch/x86/include/asm/irqflags.h12
-rw-r--r--arch/x86/include/asm/pgtable_types.h2
-rw-r--r--arch/x86/kernel/acpi/cstate.c2
-rw-r--r--arch/x86/kernel/apic/hw_nmi.c18
-rw-r--r--arch/x86/kernel/process.c4
-rw-r--r--arch/x86/kernel/vmlinux.lds.S1
-rw-r--r--arch/xtensa/kernel/vmlinux.lds.S3
69 files changed, 142 insertions, 144 deletions
diff --git a/arch/alpha/Kconfig b/arch/alpha/Kconfig
index 7f312d80b43b..0e49d39ea74a 100644
--- a/arch/alpha/Kconfig
+++ b/arch/alpha/Kconfig
@@ -15,7 +15,6 @@ config ALPHA
select GENERIC_IRQ_SHOW
select ARCH_WANT_IPC_PARSE_VERSION
select ARCH_HAVE_NMI_SAFE_CMPXCHG
- select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
select AUDIT_ARCH
select GENERIC_CLOCKEVENTS
select GENERIC_SMP_IDLE_THREAD
diff --git a/arch/alpha/kernel/vmlinux.lds.S b/arch/alpha/kernel/vmlinux.lds.S
index 647b84c15382..cebecfb76fbf 100644
--- a/arch/alpha/kernel/vmlinux.lds.S
+++ b/arch/alpha/kernel/vmlinux.lds.S
@@ -22,6 +22,7 @@ SECTIONS
HEAD_TEXT
TEXT_TEXT
SCHED_TEXT
+ CPUIDLE_TEXT
LOCK_TEXT
*(.fixup)
*(.gnu.warning)
diff --git a/arch/arc/kernel/vmlinux.lds.S b/arch/arc/kernel/vmlinux.lds.S
index 36611072305f..f35ed578e007 100644
--- a/arch/arc/kernel/vmlinux.lds.S
+++ b/arch/arc/kernel/vmlinux.lds.S
@@ -89,6 +89,7 @@ SECTIONS
_text = .;
TEXT_TEXT
SCHED_TEXT
+ CPUIDLE_TEXT
LOCK_TEXT
KPROBES_TEXT
*(.fixup)
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 125657b602a4..b5d529fdffab 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -2,7 +2,6 @@ config ARM
bool
default y
select ARCH_CLOCKSOURCE_DATA
- select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
select ARCH_HAS_DEVMEM_IS_ALLOWED
select ARCH_HAS_ELF_RANDOMIZE
select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
diff --git a/arch/arm/include/asm/irq.h b/arch/arm/include/asm/irq.h
index 1bd9510de1b9..e53638c8ed8a 100644
--- a/arch/arm/include/asm/irq.h
+++ b/arch/arm/include/asm/irq.h
@@ -36,8 +36,9 @@ extern void set_handle_irq(void (*handle_irq)(struct pt_regs *));
#endif
#ifdef CONFIG_SMP
-extern void arch_trigger_all_cpu_backtrace(bool);
-#define arch_trigger_all_cpu_backtrace(x) arch_trigger_all_cpu_backtrace(x)
+extern void arch_trigger_cpumask_backtrace(const cpumask_t *mask,
+ bool exclude_self);
+#define arch_trigger_cpumask_backtrace arch_trigger_cpumask_backtrace
#endif
static inline int nr_legacy_irqs(void)
diff --git a/arch/arm/kernel/smp.c b/arch/arm/kernel/smp.c
index 937c8920d741..7dd14e8395e6 100644
--- a/arch/arm/kernel/smp.c
+++ b/arch/arm/kernel/smp.c
@@ -748,19 +748,10 @@ core_initcall(register_cpufreq_notifier);
static void raise_nmi(cpumask_t *mask)
{
- /*
- * Generate the backtrace directly if we are running in a calling
- * context that is not preemptible by the backtrace IPI. Note
- * that nmi_cpu_backtrace() automatically removes the current cpu
- * from mask.
- */
- if (cpumask_test_cpu(smp_processor_id(), mask) && irqs_disabled())
- nmi_cpu_backtrace(NULL);
-
smp_cross_call(mask, IPI_CPU_BACKTRACE);
}
-void arch_trigger_all_cpu_backtrace(bool include_self)
+void arch_trigger_cpumask_backtrace(const cpumask_t *mask, bool exclude_self)
{
- nmi_trigger_all_cpu_backtrace(include_self, raise_nmi);
+ nmi_trigger_cpumask_backtrace(mask, exclude_self, raise_nmi);
}
diff --git a/arch/arm/kernel/vmlinux-xip.lds.S b/arch/arm/kernel/vmlinux-xip.lds.S
index cba1ec899a69..7fa487ef7e2f 100644
--- a/arch/arm/kernel/vmlinux-xip.lds.S
+++ b/arch/arm/kernel/vmlinux-xip.lds.S
@@ -98,6 +98,7 @@ SECTIONS
IRQENTRY_TEXT
TEXT_TEXT
SCHED_TEXT
+ CPUIDLE_TEXT
LOCK_TEXT
KPROBES_TEXT
*(.gnu.warning)
diff --git a/arch/arm/kernel/vmlinux.lds.S b/arch/arm/kernel/vmlinux.lds.S
index d24e5dd2aa7a..f7f55df0bf7b 100644
--- a/arch/arm/kernel/vmlinux.lds.S
+++ b/arch/arm/kernel/vmlinux.lds.S
@@ -111,6 +111,7 @@ SECTIONS
SOFTIRQENTRY_TEXT
TEXT_TEXT
SCHED_TEXT
+ CPUIDLE_TEXT
LOCK_TEXT
HYPERVISOR_TEXT
KPROBES_TEXT
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index 01600401a53e..30398dbc940a 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -8,9 +8,9 @@ config ARM64
select ARCH_CLOCKSOURCE_DATA
select ARCH_HAS_DEVMEM_IS_ALLOWED
select ARCH_HAS_ACPI_TABLE_UPGRADE if ACPI
- select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
select ARCH_HAS_ELF_RANDOMIZE
select ARCH_HAS_GCOV_PROFILE_ALL
+ select ARCH_HAS_GIGANTIC_PAGE
select ARCH_HAS_KCOV
select ARCH_HAS_SG_CHAIN
select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
diff --git a/arch/arm64/kernel/vmlinux.lds.S b/arch/arm64/kernel/vmlinux.lds.S
index 5ce9b2929e0d..1105aab1e6d6 100644
--- a/arch/arm64/kernel/vmlinux.lds.S
+++ b/arch/arm64/kernel/vmlinux.lds.S
@@ -122,6 +122,7 @@ SECTIONS
ENTRY_TEXT
TEXT_TEXT
SCHED_TEXT
+ CPUIDLE_TEXT
LOCK_TEXT
KPROBES_TEXT
HYPERVISOR_TEXT
diff --git a/arch/avr32/kernel/vmlinux.lds.S b/arch/avr32/kernel/vmlinux.lds.S
index a4589176bed5..17f2730eb497 100644
--- a/arch/avr32/kernel/vmlinux.lds.S
+++ b/arch/avr32/kernel/vmlinux.lds.S
@@ -52,6 +52,7 @@ SECTIONS
KPROBES_TEXT
TEXT_TEXT
SCHED_TEXT
+ CPUIDLE_TEXT
LOCK_TEXT
*(.fixup)
*(.gnu.warning)
diff --git a/arch/blackfin/kernel/vmlinux.lds.S b/arch/blackfin/kernel/vmlinux.lds.S
index d920b959ff3a..68069a120055 100644
--- a/arch/blackfin/kernel/vmlinux.lds.S
+++ b/arch/blackfin/kernel/vmlinux.lds.S
@@ -33,6 +33,7 @@ SECTIONS
#ifndef CONFIG_SCHEDULE_L1
SCHED_TEXT
#endif
+ CPUIDLE_TEXT
LOCK_TEXT
IRQENTRY_TEXT
SOFTIRQENTRY_TEXT
diff --git a/arch/c6x/kernel/vmlinux.lds.S b/arch/c6x/kernel/vmlinux.lds.S
index 50bc10f97bcb..a1a5c166bc9b 100644
--- a/arch/c6x/kernel/vmlinux.lds.S
+++ b/arch/c6x/kernel/vmlinux.lds.S
@@ -70,6 +70,7 @@ SECTIONS
_stext = .;
TEXT_TEXT
SCHED_TEXT
+ CPUIDLE_TEXT
LOCK_TEXT
IRQENTRY_TEXT
SOFTIRQENTRY_TEXT
diff --git a/arch/cris/kernel/vmlinux.lds.S b/arch/cris/kernel/vmlinux.lds.S
index 7552c2557506..979586261520 100644
--- a/arch/cris/kernel/vmlinux.lds.S
+++ b/arch/cris/kernel/vmlinux.lds.S
@@ -43,6 +43,7 @@ SECTIONS
HEAD_TEXT
TEXT_TEXT
SCHED_TEXT
+ CPUIDLE_TEXT
LOCK_TEXT
*(.fixup)
*(.text.__*)
diff --git a/arch/frv/kernel/vmlinux.lds.S b/arch/frv/kernel/vmlinux.lds.S
index 7e958d829ec9..aa6e573d57da 100644
--- a/arch/frv/kernel/vmlinux.lds.S
+++ b/arch/frv/kernel/vmlinux.lds.S
@@ -63,6 +63,7 @@ SECTIONS
*(.text..tlbmiss)
TEXT_TEXT
SCHED_TEXT
+ CPUIDLE_TEXT
LOCK_TEXT
#ifdef CONFIG_DEBUG_INFO
INIT_TEXT
diff --git a/arch/h8300/kernel/vmlinux.lds.S b/arch/h8300/kernel/vmlinux.lds.S
index cb5dfb02c88d..7f11da1b895e 100644
--- a/arch/h8300/kernel/vmlinux.lds.S
+++ b/arch/h8300/kernel/vmlinux.lds.S
@@ -29,6 +29,7 @@ SECTIONS
_stext = . ;
TEXT_TEXT
SCHED_TEXT
+ CPUIDLE_TEXT
LOCK_TEXT
#if defined(CONFIG_ROMKERNEL)
*(.int_redirect)
diff --git a/arch/hexagon/kernel/vmlinux.lds.S b/arch/hexagon/kernel/vmlinux.lds.S
index 5f268c1071b3..ec87e67feb19 100644
--- a/arch/hexagon/kernel/vmlinux.lds.S
+++ b/arch/hexagon/kernel/vmlinux.lds.S
@@ -50,6 +50,7 @@ SECTIONS
_text = .;
TEXT_TEXT
SCHED_TEXT
+ CPUIDLE_TEXT
LOCK_TEXT
KPROBES_TEXT
*(.fixup)
diff --git a/arch/ia64/include/asm/atomic.h b/arch/ia64/include/asm/atomic.h
index f565ad376142..65d4bb2b6685 100644
--- a/arch/ia64/include/asm/atomic.h
+++ b/arch/ia64/include/asm/atomic.h
@@ -269,6 +269,22 @@ static __inline__ long atomic64_add_unless(atomic64_t *v, long a, long u)
#define atomic64_inc_not_zero(v) atomic64_add_unless((v), 1, 0)
+static __inline__ long atomic64_dec_if_positive(atomic64_t *v)
+{
+ long c, old, dec;
+ c = atomic64_read(v);
+ for (;;) {
+ dec = c - 1;
+ if (unlikely(dec < 0))
+ break;
+ old = atomic64_cmpxchg((v), c, dec);
+ if (likely(old == c))
+ break;
+ c = old;
+ }
+ return dec;
+}
+
/*
* Atomically add I to V and return TRUE if the resulting value is
* negative.
diff --git a/arch/ia64/kernel/vmlinux.lds.S b/arch/ia64/kernel/vmlinux.lds.S
index dc506b05ffbd..f89d20c97412 100644
--- a/arch/ia64/kernel/vmlinux.lds.S
+++ b/arch/ia64/kernel/vmlinux.lds.S
@@ -46,6 +46,7 @@ SECTIONS {
__end_ivt_text = .;
TEXT_TEXT
SCHED_TEXT
+ CPUIDLE_TEXT
LOCK_TEXT
KPROBES_TEXT
*(.gnu.linkonce.t*)
diff --git a/arch/m32r/kernel/vmlinux.lds.S b/arch/m32r/kernel/vmlinux.lds.S
index 018e4a711d79..ad1fe56455aa 100644
--- a/arch/m32r/kernel/vmlinux.lds.S
+++ b/arch/m32r/kernel/vmlinux.lds.S
@@ -31,6 +31,7 @@ SECTIONS
HEAD_TEXT
TEXT_TEXT
SCHED_TEXT
+ CPUIDLE_TEXT
LOCK_TEXT
*(.fixup)
*(.gnu.warning)
diff --git a/arch/m68k/kernel/vmlinux-nommu.lds b/arch/m68k/kernel/vmlinux-nommu.lds
index 06a763f49fd3..d2c8abf1c8c4 100644
--- a/arch/m68k/kernel/vmlinux-nommu.lds
+++ b/arch/m68k/kernel/vmlinux-nommu.lds
@@ -45,6 +45,7 @@ SECTIONS {
HEAD_TEXT
TEXT_TEXT
SCHED_TEXT
+ CPUIDLE_TEXT
LOCK_TEXT
*(.fixup)
. = ALIGN(16);
diff --git a/arch/m68k/kernel/vmlinux-std.lds b/arch/m68k/kernel/vmlinux-std.lds
index d0993594f558..5b5ce1e4d1ed 100644
--- a/arch/m68k/kernel/vmlinux-std.lds
+++ b/arch/m68k/kernel/vmlinux-std.lds
@@ -16,6 +16,7 @@ SECTIONS
HEAD_TEXT
TEXT_TEXT
SCHED_TEXT
+ CPUIDLE_TEXT
LOCK_TEXT
*(.fixup)
*(.gnu.warning)
diff --git a/arch/m68k/kernel/vmlinux-sun3.lds b/arch/m68k/kernel/vmlinux-sun3.lds
index 8080469ee6c1..fe5ea1974b16 100644
--- a/arch/m68k/kernel/vmlinux-sun3.lds
+++ b/arch/m68k/kernel/vmlinux-sun3.lds
@@ -16,6 +16,7 @@ SECTIONS
HEAD_TEXT
TEXT_TEXT
SCHED_TEXT
+ CPUIDLE_TEXT
LOCK_TEXT
*(.fixup)
*(.gnu.warning)
diff --git a/arch/metag/kernel/vmlinux.lds.S b/arch/metag/kernel/vmlinux.lds.S
index 150ace92c7ad..e6c700eaf207 100644
--- a/arch/metag/kernel/vmlinux.lds.S
+++ b/arch/metag/kernel/vmlinux.lds.S
@@ -21,6 +21,7 @@ SECTIONS
.text : {
TEXT_TEXT
SCHED_TEXT
+ CPUIDLE_TEXT
LOCK_TEXT
KPROBES_TEXT
IRQENTRY_TEXT
diff --git a/arch/microblaze/kernel/vmlinux.lds.S b/arch/microblaze/kernel/vmlinux.lds.S
index 0a47f0410554..289d0e7f3e3a 100644
--- a/arch/microblaze/kernel/vmlinux.lds.S
+++ b/arch/microblaze/kernel/vmlinux.lds.S
@@ -33,6 +33,7 @@ SECTIONS {
EXIT_TEXT
EXIT_CALL
SCHED_TEXT
+ CPUIDLE_TEXT
LOCK_TEXT
KPROBES_TEXT
IRQENTRY_TEXT
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index 212ff92920d2..1a322c807f22 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -30,7 +30,6 @@ config MIPS
select HAVE_ARCH_TRANSPARENT_HUGEPAGE if CPU_SUPPORTS_HUGEPAGES && 64BIT
select RTC_LIB if !MACH_LOONGSON64
select GENERIC_ATOMIC64 if !64BIT
- select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
select HAVE_DMA_CONTIGUOUS
select HAVE_DMA_API_DEBUG
select GENERIC_IRQ_PROBE
diff --git a/arch/mips/include/asm/irq.h b/arch/mips/include/asm/irq.h
index 15e0fecbc300..6bf10e796553 100644
--- a/arch/mips/include/asm/irq.h
+++ b/arch/mips/include/asm/irq.h
@@ -51,7 +51,8 @@ extern int cp0_fdc_irq;
extern int get_c0_fdc_int(void);
-void arch_trigger_all_cpu_backtrace(bool);
-#define arch_trigger_all_cpu_backtrace arch_trigger_all_cpu_backtrace
+void arch_trigger_cpumask_backtrace(const struct cpumask *mask,
+ bool exclude_self);
+#define arch_trigger_cpumask_backtrace arch_trigger_cpumask_backtrace
#endif /* _ASM_IRQ_H */
diff --git a/arch/mips/include/asm/pgtable.h b/arch/mips/include/asm/pgtable.h
index 70128d3f770a..9e9e94415d08 100644
--- a/arch/mips/include/asm/pgtable.h
+++ b/arch/mips/include/asm/pgtable.h
@@ -673,8 +673,6 @@ static inline pmd_t pmdp_huge_get_and_clear(struct mm_struct *mm,
struct file;
pgprot_t phys_mem_access_prot(struct file *file, unsigned long pfn,
unsigned long size, pgprot_t vma_prot);
-int phys_mem_access_prot_allowed(struct file *file, unsigned long pfn,
- unsigned long size, pgprot_t *vma_prot);
#endif
/*
diff --git a/arch/mips/include/asm/uprobes.h b/arch/mips/include/asm/uprobes.h
index 70a4a2f173ff..b86d1ae07125 100644
--- a/arch/mips/include/asm/uprobes.h
+++ b/arch/mips/include/asm/uprobes.h
@@ -42,16 +42,4 @@ struct arch_uprobe_task {
unsigned long saved_trap_nr;
};
-extern int arch_uprobe_analyze_insn(struct arch_uprobe *aup,
- struct mm_struct *mm, unsigned long addr);
-extern int arch_uprobe_pre_xol(struct arch_uprobe *aup, struct pt_regs *regs);
-extern int arch_uprobe_post_xol(struct arch_uprobe *aup, struct pt_regs *regs);
-extern bool arch_uprobe_xol_was_trapped(struct task_struct *tsk);
-extern int arch_uprobe_exception_notify(struct notifier_block *self,
- unsigned long val, void *data);
-extern void arch_uprobe_abort_xol(struct arch_uprobe *aup,
- struct pt_regs *regs);
-extern unsigned long arch_uretprobe_hijack_return_addr(
- unsigned long trampoline_vaddr, struct pt_regs *regs);
-
#endif /* __ASM_UPROBES_H */
diff --git a/arch/mips/kernel/process.c b/arch/mips/kernel/process.c
index d2d061520a23..9514e5f2209f 100644
--- a/arch/mips/kernel/process.c
+++ b/arch/mips/kernel/process.c
@@ -569,9 +569,16 @@ static void arch_dump_stack(void *info)
dump_stack();
}
-void arch_trigger_all_cpu_backtrace(bool include_self)
+void arch_trigger_cpumask_backtrace(const cpumask_t *mask, bool exclude_self)
{
- smp_call_function(arch_dump_stack, NULL, 1);
+ long this_cpu = get_cpu();
+
+ if (cpumask_test_cpu(this_cpu, mask) && !exclude_self)
+ dump_stack();
+
+ smp_call_function_many(mask, arch_dump_stack, NULL, 1);
+
+ put_cpu();
}
int mips_get_process_fp_mode(struct task_struct *task)
diff --git a/arch/mips/kernel/vmlinux.lds.S b/arch/mips/kernel/vmlinux.lds.S
index a82c178d0bb9..d5de67591735 100644
--- a/arch/mips/kernel/vmlinux.lds.S
+++ b/arch/mips/kernel/vmlinux.lds.S
@@ -55,6 +55,7 @@ SECTIONS
.text : {
TEXT_TEXT
SCHED_TEXT
+ CPUIDLE_TEXT
LOCK_TEXT
KPROBES_TEXT
IRQENTRY_TEXT
diff --git a/arch/mn10300/kernel/vmlinux.lds.S b/arch/mn10300/kernel/vmlinux.lds.S
index 13c4814c29f8..2d5f1c3f1afb 100644
--- a/arch/mn10300/kernel/vmlinux.lds.S
+++ b/arch/mn10300/kernel/vmlinux.lds.S
@@ -30,6 +30,7 @@ SECTIONS
HEAD_TEXT
TEXT_TEXT
SCHED_TEXT
+ CPUIDLE_TEXT
LOCK_TEXT
KPROBES_TEXT
*(.fixup)
diff --git a/arch/nios2/kernel/vmlinux.lds.S b/arch/nios2/kernel/vmlinux.lds.S
index e23e89539967..6a8045bb1a77 100644
--- a/arch/nios2/kernel/vmlinux.lds.S
+++ b/arch/nios2/kernel/vmlinux.lds.S
@@ -37,6 +37,7 @@ SECTIONS
.text : {
TEXT_TEXT
SCHED_TEXT
+ CPUIDLE_TEXT
LOCK_TEXT
IRQENTRY_TEXT
SOFTIRQENTRY_TEXT
diff --git a/arch/openrisc/kernel/vmlinux.lds.S b/arch/openrisc/kernel/vmlinux.lds.S
index d936de4c07ca..d68b9ede8423 100644
--- a/arch/openrisc/kernel/vmlinux.lds.S
+++ b/arch/openrisc/kernel/vmlinux.lds.S
@@ -47,6 +47,7 @@ SECTIONS
_stext = .;
TEXT_TEXT
SCHED_TEXT
+ CPUIDLE_TEXT
LOCK_TEXT
KPROBES_TEXT
IRQENTRY_TEXT
diff --git a/arch/parisc/Kconfig b/arch/parisc/Kconfig
index 2a0339a68894..71c4a3aa3752 100644
--- a/arch/parisc/Kconfig
+++ b/arch/parisc/Kconfig
@@ -16,7 +16,6 @@ config PARISC
select BUILDTIME_EXTABLE_SORT
select HAVE_PERF_EVENTS
select GENERIC_ATOMIC64 if !64BIT
- select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
select GENERIC_IRQ_PROBE
select GENERIC_PCI_IOMAP
select ARCH_HAVE_NMI_SAFE_CMPXCHG
diff --git a/arch/parisc/kernel/vmlinux.lds.S b/arch/parisc/kernel/vmlinux.lds.S
index 5b8fae8d4d12..b37787dbe775 100644
--- a/arch/parisc/kernel/vmlinux.lds.S
+++ b/arch/parisc/kernel/vmlinux.lds.S
@@ -69,6 +69,7 @@ SECTIONS
.text ALIGN(PAGE_SIZE) : {
TEXT_TEXT
SCHED_TEXT
+ CPUIDLE_TEXT
LOCK_TEXT
KPROBES_TEXT
IRQENTRY_TEXT
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index 569b4f9271a4..65fba4c34cd7 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -108,7 +108,6 @@ config PPC
select HAVE_DEBUG_KMEMLEAK
select ARCH_HAS_SG_CHAIN
select GENERIC_ATOMIC64 if PPC32
- select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
select HAVE_PERF_EVENTS
select HAVE_PERF_REGS
select HAVE_PERF_USER_STACK_DUMP
diff --git a/arch/powerpc/include/asm/mmzone.h b/arch/powerpc/include/asm/mmzone.h
index 7b589178be46..4d52ccfc2366 100644
--- a/arch/powerpc/include/asm/mmzone.h
+++ b/arch/powerpc/include/asm/mmzone.h
@@ -41,6 +41,9 @@ u64 memory_hotplug_max(void);
#else
#define memory_hotplug_max() memblock_end_of_DRAM()
#endif /* CONFIG_NEED_MULTIPLE_NODES */
+#ifdef CONFIG_FA_DUMP
+#define __HAVE_ARCH_RESERVED_KERNEL_PAGES
+#endif
#endif /* __KERNEL__ */
#endif /* _ASM_MMZONE_H_ */
diff --git a/arch/powerpc/kernel/fadump.c b/arch/powerpc/kernel/fadump.c
index 963918e0974a..8f0c7c5d93f2 100644
--- a/arch/powerpc/kernel/fadump.c
+++ b/arch/powerpc/kernel/fadump.c
@@ -333,6 +333,11 @@ int __init fadump_reserve_mem(void)
return 1;
}
+unsigned long __init arch_reserved_kernel_pages(void)
+{
+ return memblock_reserved_size() / PAGE_SIZE;
+}
+
/* Look for fadump= cmdline option. */
static int __init early_fadump_param(char *p)
{
diff --git a/arch/powerpc/kernel/vmlinux.lds.S b/arch/powerpc/kernel/vmlinux.lds.S
index 2d1cfafd1404..8295f51c1a5f 100644
--- a/arch/powerpc/kernel/vmlinux.lds.S
+++ b/arch/powerpc/kernel/vmlinux.lds.S
@@ -99,6 +99,7 @@ SECTIONS
/* careful! __ftr_alt_* sections need to be close to .text */
*(.text .fixup __ftr_alt_* .ref.text)
SCHED_TEXT
+ CPUIDLE_TEXT
LOCK_TEXT
KPROBES_TEXT
IRQENTRY_TEXT
diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig
index deeadfa291ba..426481d4cc86 100644
--- a/arch/s390/Kconfig
+++ b/arch/s390/Kconfig
@@ -67,10 +67,10 @@ config DEBUG_RODATA
config S390
def_bool y
- select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
select ARCH_HAS_DEVMEM_IS_ALLOWED
select ARCH_HAS_ELF_RANDOMIZE
select ARCH_HAS_GCOV_PROFILE_ALL
+ select ARCH_HAS_GIGANTIC_PAGE
select ARCH_HAS_KCOV
select ARCH_HAS_SG_CHAIN
select ARCH_HAS_UBSAN_SANITIZE_ALL
diff --git a/arch/s390/include/asm/uprobes.h b/arch/s390/include/asm/uprobes.h
index 1411dff7fea7..658393c65d7e 100644
--- a/arch/s390/include/asm/uprobes.h
+++ b/arch/s390/include/asm/uprobes.h
@@ -29,14 +29,4 @@ struct arch_uprobe {
struct arch_uprobe_task {
};
-int arch_uprobe_analyze_insn(struct arch_uprobe *aup, struct mm_struct *mm,
- unsigned long addr);
-int arch_uprobe_pre_xol(struct arch_uprobe *aup, struct pt_regs *regs);
-int arch_uprobe_post_xol(struct arch_uprobe *aup, struct pt_regs *regs);
-bool arch_uprobe_xol_was_trapped(struct task_struct *tsk);
-int arch_uprobe_exception_notify(struct notifier_block *self, unsigned long val,
- void *data);
-void arch_uprobe_abort_xol(struct arch_uprobe *ap, struct pt_regs *regs);
-unsigned long arch_uretprobe_hijack_return_addr(unsigned long trampoline,
- struct pt_regs *regs);
#endif /* _ASM_UPROBES_H */
diff --git a/arch/s390/kernel/compat_linux.c b/arch/s390/kernel/compat_linux.c
index 437e61159279..0f9cd90c11af 100644
--- a/arch/s390/kernel/compat_linux.c
+++ b/arch/s390/kernel/compat_linux.c
@@ -189,7 +189,7 @@ static int groups16_to_user(u16 __user *grouplist, struct group_info *group_info
kgid_t kgid;
for (i = 0; i < group_info->ngroups; i++) {
- kgid = GROUP_AT(group_info, i);
+ kgid = group_info->gid[i];
group = (u16)from_kgid_munged(user_ns, kgid);
if (put_user(group, grouplist+i))
return -EFAULT;
@@ -213,7 +213,7 @@ static int groups16_from_user(struct group_info *group_info, u16 __user *groupli
if (!gid_valid(kgid))
return -EINVAL;
- GROUP_AT(group_info, i) = kgid;
+ group_info->gid[i] = kgid;
}
return 0;
diff --git a/arch/s390/kernel/vmlinux.lds.S b/arch/s390/kernel/vmlinux.lds.S
index 429bfd111961..000e6e91f6a0 100644
--- a/arch/s390/kernel/vmlinux.lds.S
+++ b/arch/s390/kernel/vmlinux.lds.S
@@ -35,6 +35,7 @@ SECTIONS
HEAD_TEXT
TEXT_TEXT
SCHED_TEXT
+ CPUIDLE_TEXT
LOCK_TEXT
KPROBES_TEXT
IRQENTRY_TEXT
diff --git a/arch/score/kernel/vmlinux.lds.S b/arch/score/kernel/vmlinux.lds.S
index 7274b5c4287e..4117890b1db1 100644
--- a/arch/score/kernel/vmlinux.lds.S
+++ b/arch/score/kernel/vmlinux.lds.S
@@ -40,6 +40,7 @@ SECTIONS
_text = .; /* Text and read-only data */
TEXT_TEXT
SCHED_TEXT
+ CPUIDLE_TEXT
LOCK_TEXT
KPROBES_TEXT
*(.text.*)
diff --git a/arch/sh/kernel/vmlinux.lds.S b/arch/sh/kernel/vmlinux.lds.S
index 235a4101999f..5b9a3cc90c58 100644
--- a/arch/sh/kernel/vmlinux.lds.S
+++ b/arch/sh/kernel/vmlinux.lds.S
@@ -36,6 +36,7 @@ SECTIONS
TEXT_TEXT
EXTRA_TEXT
SCHED_TEXT
+ CPUIDLE_TEXT
LOCK_TEXT
KPROBES_TEXT
IRQENTRY_TEXT
diff --git a/arch/sparc/Kconfig b/arch/sparc/Kconfig
index f5d60f14a0bc..b23c76b42d6e 100644
--- a/arch/sparc/Kconfig
+++ b/arch/sparc/Kconfig
@@ -22,7 +22,6 @@ config SPARC
select HAVE_ARCH_TRACEHOOK
select HAVE_EXIT_THREAD
select SYSCTL_EXCEPTION_TRACE
- select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
select RTC_CLASS
select RTC_DRV_M48T59
select RTC_SYSTOHC
diff --git a/arch/sparc/include/asm/irq_64.h b/arch/sparc/include/asm/irq_64.h
index 3f70f900e834..1d51a11fb261 100644
--- a/arch/sparc/include/asm/irq_64.h
+++ b/arch/sparc/include/asm/irq_64.h
@@ -86,8 +86,9 @@ static inline unsigned long get_softint(void)
return retval;
}
-void arch_trigger_all_cpu_backtrace(bool);
-#define arch_trigger_all_cpu_backtrace arch_trigger_all_cpu_backtrace
+void arch_trigger_cpumask_backtrace(const struct cpumask *mask,
+ bool exclude_self);
+#define arch_trigger_cpumask_backtrace arch_trigger_cpumask_backtrace
extern void *hardirq_stack[NR_CPUS];
extern void *softirq_stack[NR_CPUS];
diff --git a/arch/sparc/kernel/process_64.c b/arch/sparc/kernel/process_64.c
index fa14402b33f9..47ff5588e521 100644
--- a/arch/sparc/kernel/process_64.c
+++ b/arch/sparc/kernel/process_64.c
@@ -239,7 +239,7 @@ static void __global_reg_poll(struct global_reg_snapshot *gp)
}
}
-void arch_trigger_all_cpu_backtrace(bool include_self)
+void arch_trigger_cpumask_backtrace(const cpumask_t *mask, bool exclude_self)
{
struct thread_info *tp = current_thread_info();
struct pt_regs *regs = get_irq_regs();
@@ -255,15 +255,15 @@ void arch_trigger_all_cpu_backtrace(bool include_self)
memset(global_cpu_snapshot, 0, sizeof(global_cpu_snapshot));
- if (include_self)
+ if (cpumask_test_cpu(this_cpu, mask) && !exclude_self)
__global_reg_self(tp, regs, this_cpu);
smp_fetch_global_regs();
- for_each_online_cpu(cpu) {
+ for_each_cpu(cpu, mask) {
struct global_reg_snapshot *gp;
- if (!include_self && cpu == this_cpu)
+ if (exclude_self && cpu == this_cpu)
continue;
gp = &global_cpu_snapshot[cpu].reg;
@@ -300,7 +300,7 @@ void arch_trigger_all_cpu_backtrace(bool include_self)
static void sysrq_handle_globreg(int key)
{
- arch_trigger_all_cpu_backtrace(true);
+ trigger_all_cpu_backtrace();
}
static struct sysrq_key_op sparc_globalreg_op = {
diff --git a/arch/sparc/kernel/vmlinux.lds.S b/arch/sparc/kernel/vmlinux.lds.S
index d79b3b734245..572db686f845 100644
--- a/arch/sparc/kernel/vmlinux.lds.S
+++ b/arch/sparc/kernel/vmlinux.lds.S
@@ -49,6 +49,7 @@ SECTIONS
HEAD_TEXT
TEXT_TEXT
SCHED_TEXT
+ CPUIDLE_TEXT
LOCK_TEXT
KPROBES_TEXT
IRQENTRY_TEXT
diff --git a/arch/tile/Kconfig b/arch/tile/Kconfig
index 78da75b670bc..4583c0320059 100644
--- a/arch/tile/Kconfig
+++ b/arch/tile/Kconfig
@@ -3,7 +3,6 @@
config TILE
def_bool y
- select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
select ARCH_HAS_DEVMEM_IS_ALLOWED
select ARCH_HAVE_NMI_SAFE_CMPXCHG
select ARCH_WANT_FRAME_POINTERS
diff --git a/arch/tile/include/asm/irq.h b/arch/tile/include/asm/irq.h
index 84a924034bdb..1fa1f2544ff9 100644
--- a/arch/tile/include/asm/irq.h
+++ b/arch/tile/include/asm/irq.h
@@ -79,8 +79,9 @@ void tile_irq_activate(unsigned int irq, int tile_irq_type);
void setup_irq_regs(void);
#ifdef __tilegx__
-void arch_trigger_all_cpu_backtrace(bool self);
-#define arch_trigger_all_cpu_backtrace arch_trigger_all_cpu_backtrace
+void arch_trigger_cpumask_backtrace(const struct cpumask *mask,
+ bool exclude_self);
+#define arch_trigger_cpumask_backtrace arch_trigger_cpumask_backtrace
#endif
#endif /* _ASM_TILE_IRQ_H */
diff --git a/arch/tile/kernel/entry.S b/arch/tile/kernel/entry.S
index 670a3569450f..101de132e363 100644
--- a/arch/tile/kernel/entry.S
+++ b/arch/tile/kernel/entry.S
@@ -50,7 +50,7 @@ STD_ENTRY(smp_nap)
* When interrupted at _cpu_idle_nap, we bump the PC forward 8, and
* as a result return to the function that called _cpu_idle().
*/
-STD_ENTRY(_cpu_idle)
+STD_ENTRY_SECTION(_cpu_idle, .cpuidle.text)
movei r1, 1
IRQ_ENABLE_LOAD(r2, r3)
mtspr INTERRUPT_CRITICAL_SECTION, r1
diff --git a/arch/tile/kernel/pmc.c b/arch/tile/kernel/pmc.c
index db62cc34b955..81cf8743a3f3 100644
--- a/arch/tile/kernel/pmc.c
+++ b/arch/tile/kernel/pmc.c
@@ -16,7 +16,6 @@
#include <linux/spinlock.h>
#include <linux/module.h>
#include <linux/atomic.h>
-#include <linux/interrupt.h>
#include <asm/processor.h>
#include <asm/pmc.h>
@@ -29,9 +28,7 @@ int handle_perf_interrupt(struct pt_regs *regs, int fault)
if (!perf_irq)
panic("Unexpected PERF_COUNT interrupt %d\n", fault);
- nmi_enter();
retval = perf_irq(regs, fault);
- nmi_exit();
return retval;
}
diff --git a/arch/tile/kernel/process.c b/arch/tile/kernel/process.c
index a465d8372edd..9f37106ef93a 100644
--- a/arch/tile/kernel/process.c
+++ b/arch/tile/kernel/process.c
@@ -22,7 +22,7 @@
#include <linux/init.h>
#include <linux/mm.h>
#include <linux/compat.h>
-#include <linux/hardirq.h>
+#include <linux/nmi.h>
#include <linux/syscalls.h>
#include <linux/kernel.h>
#include <linux/tracehook.h>
@@ -594,66 +594,18 @@ void show_regs(struct pt_regs *regs)
tile_show_stack(&kbt);
}
-/* To ensure stack dump on tiles occurs one by one. */
-static DEFINE_SPINLOCK(backtrace_lock);
-/* To ensure no backtrace occurs before all of the stack dump are done. */
-static atomic_t backtrace_cpus;
-/* The cpu mask to avoid reentrance. */
-static struct cpumask backtrace_mask;
-
-void do_nmi_dump_stack(struct pt_regs *regs)
-{
- int is_idle = is_idle_task(current) && !in_interrupt();
- int cpu;
-
- nmi_enter();
- cpu = smp_processor_id();
- if (WARN_ON_ONCE(!cpumask_test_and_clear_cpu(cpu, &backtrace_mask)))
- goto done;
-
- spin_lock(&backtrace_lock);
- if (is_idle)
- pr_info("CPU: %d idle\n", cpu);
- else
- show_regs(regs);
- spin_unlock(&backtrace_lock);
- atomic_dec(&backtrace_cpus);
-done:
- nmi_exit();
-}
-
#ifdef __tilegx__
-void arch_trigger_all_cpu_backtrace(bool self)
+void nmi_raise_cpu_backtrace(struct cpumask *in_mask)
{
struct cpumask mask;
HV_Coord tile;
unsigned int timeout;
int cpu;
- int ongoing;
HV_NMI_Info info[NR_CPUS];
- ongoing = atomic_cmpxchg(&backtrace_cpus, 0, num_online_cpus() - 1);
- if (ongoing != 0) {
- pr_err("Trying to do all-cpu backtrace.\n");
- pr_err("But another all-cpu backtrace is ongoing (%d cpus left)\n",
- ongoing);
- if (self) {
- pr_err("Reporting the stack on this cpu only.\n");
- dump_stack();
- }
- return;
- }
-
- cpumask_copy(&mask, cpu_online_mask);
- cpumask_clear_cpu(smp_processor_id(), &mask);
- cpumask_copy(&backtrace_mask, &mask);
-
- /* Backtrace for myself first. */
- if (self)
- dump_stack();
-
/* Tentatively dump stack on remote tiles via NMI. */
timeout = 100;
+ cpumask_copy(&mask, in_mask);
while (!cpumask_empty(&mask) && timeout) {
for_each_cpu(cpu, &mask) {
tile.x = cpu_x(cpu);
@@ -664,12 +616,17 @@ void arch_trigger_all_cpu_backtrace(bool self)
}
mdelay(10);
+ touch_softlockup_watchdog();
timeout--;
}
- /* Warn about cpus stuck in ICS and decrement their counts here. */
+ /* Warn about cpus stuck in ICS. */
if (!cpumask_empty(&mask)) {
for_each_cpu(cpu, &mask) {
+
+ /* Clear the bit as if nmi_cpu_backtrace() ran. */
+ cpumask_clear_cpu(cpu, in_mask);
+
switch (info[cpu].result) {
case HV_NMI_RESULT_FAIL_ICS:
pr_warn("Skipping stack dump of cpu %d in ICS at pc %#llx\n",
@@ -680,16 +637,20 @@ void arch_trigger_all_cpu_backtrace(bool self)
cpu);
break;
case HV_ENOSYS:
- pr_warn("Hypervisor too old to allow remote stack dumps.\n");
- goto skip_for_each;
+ WARN_ONCE(1, "Hypervisor too old to allow remote stack dumps.\n");
+ break;
default: /* should not happen */
pr_warn("Skipping stack dump of cpu %d [%d,%#llx]\n",
cpu, info[cpu].result, info[cpu].pc);
break;
}
}
-skip_for_each:
- atomic_sub(cpumask_weight(&mask), &backtrace_cpus);
}
}
+
+void arch_trigger_cpumask_backtrace(const cpumask_t *mask, bool exclude_self)
+{
+ nmi_trigger_cpumask_backtrace(mask, exclude_self,
+ nmi_raise_cpu_backtrace);
+}
#endif /* __tilegx_ */
diff --git a/arch/tile/kernel/traps.c b/arch/tile/kernel/traps.c
index 4d9651c5b1ad..39f427bb0de2 100644
--- a/arch/tile/kernel/traps.c
+++ b/arch/tile/kernel/traps.c
@@ -20,6 +20,8 @@
#include <linux/reboot.h>
#include <linux/uaccess.h>
#include <linux/ptrace.h>
+#include <linux/hardirq.h>
+#include <linux/nmi.h>
#include <asm/stack.h>
#include <asm/traps.h>
#include <asm/setup.h>
@@ -392,14 +394,17 @@ void __kprobes do_trap(struct pt_regs *regs, int fault_num,
void do_nmi(struct pt_regs *regs, int fault_num, unsigned long reason)
{
+ nmi_enter();
switch (reason) {
+#ifdef arch_trigger_cpumask_backtrace
case TILE_NMI_DUMP_STACK:
- do_nmi_dump_stack(regs);
+ nmi_cpu_backtrace(regs);
break;
+#endif
default:
panic("Unexpected do_nmi type %ld", reason);
- return;
}
+ nmi_exit();
}
/* Deprecated function currently only used here. */
diff --git a/arch/tile/kernel/vmlinux.lds.S b/arch/tile/kernel/vmlinux.lds.S
index 9d449caf8910..e1baf094fba4 100644
--- a/arch/tile/kernel/vmlinux.lds.S
+++ b/arch/tile/kernel/vmlinux.lds.S
@@ -42,6 +42,7 @@ SECTIONS
.text : AT (ADDR(.text) - LOAD_OFFSET) {
HEAD_TEXT
SCHED_TEXT
+ CPUIDLE_TEXT
LOCK_TEXT
KPROBES_TEXT
IRQENTRY_TEXT
diff --git a/arch/um/kernel/dyn.lds.S b/arch/um/kernel/dyn.lds.S
index adde088aeeff..4fdbcf958cd5 100644
--- a/arch/um/kernel/dyn.lds.S
+++ b/arch/um/kernel/dyn.lds.S
@@ -68,6 +68,7 @@ SECTIONS
_stext = .;
TEXT_TEXT
SCHED_TEXT
+ CPUIDLE_TEXT
LOCK_TEXT
*(.fixup)
*(.stub .text.* .gnu.linkonce.t.*)
diff --git a/arch/um/kernel/uml.lds.S b/arch/um/kernel/uml.lds.S
index 6899195602b7..1840f55ed042 100644
--- a/arch/um/kernel/uml.lds.S
+++ b/arch/um/kernel/uml.lds.S
@@ -28,6 +28,7 @@ SECTIONS
_stext = .;
TEXT_TEXT
SCHED_TEXT
+ CPUIDLE_TEXT
LOCK_TEXT
*(.fixup)
/* .gnu.warning sections are handled specially by elf32.em. */
diff --git a/arch/unicore32/kernel/vmlinux.lds.S b/arch/unicore32/kernel/vmlinux.lds.S
index 77e407e49a63..56e788e8ee83 100644
--- a/arch/unicore32/kernel/vmlinux.lds.S
+++ b/arch/unicore32/kernel/vmlinux.lds.S
@@ -37,6 +37,7 @@ SECTIONS
.text : { /* Real text segment */
TEXT_TEXT
SCHED_TEXT
+ CPUIDLE_TEXT
LOCK_TEXT
*(.fixup)
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 58bec8f9641a..bada636d1065 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -23,11 +23,11 @@ config X86
select ARCH_CLOCKSOURCE_DATA
select ARCH_DISCARD_MEMBLOCK
select ARCH_HAS_ACPI_TABLE_UPGRADE if ACPI
- select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
select ARCH_HAS_DEVMEM_IS_ALLOWED
select ARCH_HAS_ELF_RANDOMIZE
select ARCH_HAS_FAST_MULTIPLIER
select ARCH_HAS_GCOV_PROFILE_ALL
+ select ARCH_HAS_GIGANTIC_PAGE if X86_64
select ARCH_HAS_KCOV if X86_64
select ARCH_HAS_PMEM_API if X86_64
select ARCH_HAS_MMIO_FLUSH
diff --git a/arch/x86/include/asm/irq.h b/arch/x86/include/asm/irq.h
index e7de5c9a4fbd..16d3fa211962 100644
--- a/arch/x86/include/asm/irq.h
+++ b/arch/x86/include/asm/irq.h
@@ -50,8 +50,9 @@ extern int vector_used_by_percpu_irq(unsigned int vector);
extern void init_ISA_irqs(void);
#ifdef CONFIG_X86_LOCAL_APIC
-void arch_trigger_all_cpu_backtrace(bool);
-#define arch_trigger_all_cpu_backtrace arch_trigger_all_cpu_backtrace
+void arch_trigger_cpumask_backtrace(const struct cpumask *mask,
+ bool exclude_self);
+#define arch_trigger_cpumask_backtrace arch_trigger_cpumask_backtrace
#endif
#endif /* _ASM_X86_IRQ_H */
diff --git a/arch/x86/include/asm/irqflags.h b/arch/x86/include/asm/irqflags.h
index b77f5edb03b0..ac7692dcfa2e 100644
--- a/arch/x86/include/asm/irqflags.h
+++ b/arch/x86/include/asm/irqflags.h
@@ -4,6 +4,10 @@
#include <asm/processor-flags.h>
#ifndef __ASSEMBLY__
+
+/* Provide __cpuidle; we can't safely include <linux/cpu.h> */
+#define __cpuidle __attribute__((__section__(".cpuidle.text")))
+
/*
* Interrupt control:
*/
@@ -44,12 +48,12 @@ static inline void native_irq_enable(void)
asm volatile("sti": : :"memory");
}
-static inline void native_safe_halt(void)
+static inline __cpuidle void native_safe_halt(void)
{
asm volatile("sti; hlt": : :"memory");
}
-static inline void native_halt(void)
+static inline __cpuidle void native_halt(void)
{
asm volatile("hlt": : :"memory");
}
@@ -86,7 +90,7 @@ static inline notrace void arch_local_irq_enable(void)
* Used in the idle loop; sti takes one instruction cycle
* to complete:
*/
-static inline void arch_safe_halt(void)
+static inline __cpuidle void arch_safe_halt(void)
{
native_safe_halt();
}
@@ -95,7 +99,7 @@ static inline void arch_safe_halt(void)
* Used when interrupts are already enabled or to
* shutdown the processor:
*/
-static inline void halt(void)
+static inline __cpuidle void halt(void)
{
native_halt();
}
diff --git a/arch/x86/include/asm/pgtable_types.h b/arch/x86/include/asm/pgtable_types.h
index f1218f512f62..8b4de22d6429 100644
--- a/arch/x86/include/asm/pgtable_types.h
+++ b/arch/x86/include/asm/pgtable_types.h
@@ -439,8 +439,6 @@ extern pgprot_t pgprot_writethrough(pgprot_t prot);
struct file;
pgprot_t phys_mem_access_prot(struct file *file, unsigned long pfn,
unsigned long size, pgprot_t vma_prot);
-int phys_mem_access_prot_allowed(struct file *file, unsigned long pfn,
- unsigned long size, pgprot_t *vma_prot);
/* Install a pte for a particular vaddr in kernel space. */
void set_pte_vaddr(unsigned long vaddr, pte_t pte);
diff --git a/arch/x86/kernel/acpi/cstate.c b/arch/x86/kernel/acpi/cstate.c
index bdfad642123f..af15f4444330 100644
--- a/arch/x86/kernel/acpi/cstate.c
+++ b/arch/x86/kernel/acpi/cstate.c
@@ -152,7 +152,7 @@ int acpi_processor_ffh_cstate_probe(unsigned int cpu,
}
EXPORT_SYMBOL_GPL(acpi_processor_ffh_cstate_probe);
-void acpi_processor_ffh_cstate_enter(struct acpi_processor_cx *cx)
+void __cpuidle acpi_processor_ffh_cstate_enter(struct acpi_processor_cx *cx)
{
unsigned int cpu = smp_processor_id();
struct cstate_entry *percpu_entry;
diff --git a/arch/x86/kernel/apic/hw_nmi.c b/arch/x86/kernel/apic/hw_nmi.c
index f29501e1a5c1..c73c9fb281e1 100644
--- a/arch/x86/kernel/apic/hw_nmi.c
+++ b/arch/x86/kernel/apic/hw_nmi.c
@@ -26,32 +26,32 @@ u64 hw_nmi_get_sample_period(int watchdog_thresh)
}
#endif
-#ifdef arch_trigger_all_cpu_backtrace
+#ifdef arch_trigger_cpumask_backtrace
static void nmi_raise_cpu_backtrace(cpumask_t *mask)
{
apic->send_IPI_mask(mask, NMI_VECTOR);
}
-void arch_trigger_all_cpu_backtrace(bool include_self)
+void arch_trigger_cpumask_backtrace(const cpumask_t *mask, bool exclude_self)
{
- nmi_trigger_all_cpu_backtrace(include_self, nmi_raise_cpu_backtrace);
+ nmi_trigger_cpumask_backtrace(mask, exclude_self,
+ nmi_raise_cpu_backtrace);
}
-static int
-arch_trigger_all_cpu_backtrace_handler(unsigned int cmd, struct pt_regs *regs)
+static int nmi_cpu_backtrace_handler(unsigned int cmd, struct pt_regs *regs)
{
if (nmi_cpu_backtrace(regs))
return NMI_HANDLED;
return NMI_DONE;
}
-NOKPROBE_SYMBOL(arch_trigger_all_cpu_backtrace_handler);
+NOKPROBE_SYMBOL(nmi_cpu_backtrace_handler);
-static int __init register_trigger_all_cpu_backtrace(void)
+static int __init register_nmi_cpu_backtrace_handler(void)
{
- register_nmi_handler(NMI_LOCAL, arch_trigger_all_cpu_backtrace_handler,
+ register_nmi_handler(NMI_LOCAL, nmi_cpu_backtrace_handler,
0, "arch_bt");
return 0;
}
-early_initcall(register_trigger_all_cpu_backtrace);
+early_initcall(register_nmi_cpu_backtrace_handler);
#endif
diff --git a/arch/x86/kernel/process.c b/arch/x86/kernel/process.c
index 4002b475171c..28cea7802ecb 100644
--- a/arch/x86/kernel/process.c
+++ b/arch/x86/kernel/process.c
@@ -302,7 +302,7 @@ void arch_cpu_idle(void)
/*
* We use this if we don't have any better idle routine..
*/
-void default_idle(void)
+void __cpuidle default_idle(void)
{
trace_cpu_idle_rcuidle(1, smp_processor_id());
safe_halt();
@@ -417,7 +417,7 @@ static int prefer_mwait_c1_over_halt(const struct cpuinfo_x86 *c)
* with interrupts enabled and no flags, which is backwards compatible with the
* original MWAIT implementation.
*/
-static void mwait_idle(void)
+static __cpuidle void mwait_idle(void)
{
if (!current_set_polling_and_test()) {
trace_cpu_idle_rcuidle(1, smp_processor_id());
diff --git a/arch/x86/kernel/vmlinux.lds.S b/arch/x86/kernel/vmlinux.lds.S
index 9297a002d8e5..dbf67f64d5ec 100644
--- a/arch/x86/kernel/vmlinux.lds.S
+++ b/arch/x86/kernel/vmlinux.lds.S
@@ -97,6 +97,7 @@ SECTIONS
_stext = .;
TEXT_TEXT
SCHED_TEXT
+ CPUIDLE_TEXT
LOCK_TEXT
KPROBES_TEXT
ENTRY_TEXT
diff --git a/arch/xtensa/kernel/vmlinux.lds.S b/arch/xtensa/kernel/vmlinux.lds.S
index 72cfe3587dd8..31411fc82662 100644
--- a/arch/xtensa/kernel/vmlinux.lds.S
+++ b/arch/xtensa/kernel/vmlinux.lds.S
@@ -89,6 +89,9 @@ SECTIONS
VMLINUX_SYMBOL(__sched_text_start) = .;
*(.sched.literal .sched.text)
VMLINUX_SYMBOL(__sched_text_end) = .;
+ VMLINUX_SYMBOL(__cpuidle_text_start) = .;
+ *(.cpuidle.literal .cpuidle.text)
+ VMLINUX_SYMBOL(__cpuidle_text_end) = .;
VMLINUX_SYMBOL(__lock_text_start) = .;
*(.spinlock.literal .spinlock.text)
VMLINUX_SYMBOL(__lock_text_end) = .;