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authorLinus Torvalds <torvalds@linux-foundation.org>2012-03-23 16:59:10 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2012-03-23 16:59:10 -0700
commit8e3ade251bc7c0a4f0777df4dd34343a03efadba (patch)
tree6c0b78731e3d6609057951d07660efbd90992ad0 /arch
parente317234975cb7463b8ca21a93bb6862d9dcf113f (diff)
parente075f59152890ffd7e3d704afc997dd686c8a781 (diff)
downloadop-kernel-dev-8e3ade251bc7c0a4f0777df4dd34343a03efadba.zip
op-kernel-dev-8e3ade251bc7c0a4f0777df4dd34343a03efadba.tar.gz
Merge branch 'akpm' (Andrew's patch-bomb)
Merge second batch of patches from Andrew Morton: - various misc things - core kernel changes to prctl, exit, exec, init, etc. - kernel/watchdog.c updates - get_maintainer - MAINTAINERS - the backlight driver queue - core bitops code cleanups - the led driver queue - some core prio_tree work - checkpatch udpates - largeish crc32 update - a new poll() feature for the v4l guys - the rtc driver queue - fatfs - ptrace - signals - kmod/usermodehelper updates - coredump - procfs updates * emailed from Andrew Morton <akpm@linux-foundation.org>: (141 commits) seq_file: add seq_set_overflow(), seq_overflow() proc-ns: use d_set_d_op() API to set dentry ops in proc_ns_instantiate(). procfs: speed up /proc/pid/stat, statm procfs: add num_to_str() to speed up /proc/stat proc: speed up /proc/stat handling fs/proc/kcore.c: make get_sparsemem_vmemmap_info() static coredump: add VM_NODUMP, MADV_NODUMP, MADV_CLEAR_NODUMP coredump: remove VM_ALWAYSDUMP flag kmod: make __request_module() killable kmod: introduce call_modprobe() helper usermodehelper: ____call_usermodehelper() doesn't need do_exit() usermodehelper: kill umh_wait, renumber UMH_* constants usermodehelper: implement UMH_KILLABLE usermodehelper: introduce umh_complete(sub_info) usermodehelper: use UMH_WAIT_PROC consistently signal: zap_pid_ns_processes: s/SEND_SIG_NOINFO/SEND_SIG_FORCED/ signal: oom_kill_task: use SEND_SIG_FORCED instead of force_sig() signal: cosmetic, s/from_ancestor_ns/force/ in prepare_signal() paths signal: give SEND_SIG_FORCED more power to beat SIGNAL_UNKILLABLE Hexagon: use set_current_blocked() and block_sigmask() ...
Diffstat (limited to 'arch')
-rw-r--r--arch/Kconfig3
-rw-r--r--arch/alpha/include/asm/mman.h4
-rw-r--r--arch/arm/include/asm/pgtable-nommu.h1
-rw-r--r--arch/arm/kernel/process.c3
-rw-r--r--arch/blackfin/Kconfig1
-rw-r--r--arch/blackfin/include/asm/irq.h4
-rw-r--r--arch/c6x/include/asm/pgtable.h3
-rw-r--r--arch/hexagon/kernel/signal.c12
-rw-r--r--arch/hexagon/kernel/vdso.c3
-rw-r--r--arch/microblaze/include/asm/pgtable.h2
-rw-r--r--arch/mips/include/asm/mman.h4
-rw-r--r--arch/mips/kernel/vdso.c3
-rw-r--r--arch/mn10300/Kconfig1
-rw-r--r--arch/mn10300/include/asm/reset-regs.h4
-rw-r--r--arch/openrisc/include/asm/pgtable.h1
-rw-r--r--arch/parisc/include/asm/mman.h4
-rw-r--r--arch/powerpc/kernel/vdso.c10
-rw-r--r--arch/s390/kernel/vdso.c10
-rw-r--r--arch/sh/kernel/vsyscall/vsyscall.c3
-rw-r--r--arch/sparc/Kconfig1
-rw-r--r--arch/sparc/include/asm/irq_64.h1
-rw-r--r--arch/tile/mm/elf.c8
-rw-r--r--arch/um/kernel/signal.c26
-rw-r--r--arch/unicore32/kernel/process.c2
-rw-r--r--arch/x86/kernel/cpu/perf_event.c4
-rw-r--r--arch/x86/kernel/irqinit.c6
-rw-r--r--arch/x86/um/mem_32.c8
-rw-r--r--arch/x86/um/vdso/vma.c3
-rw-r--r--arch/x86/vdso/vdso32-setup.c17
-rw-r--r--arch/x86/vdso/vma.c3
-rw-r--r--arch/xtensa/include/asm/mman.h4
31 files changed, 50 insertions, 109 deletions
diff --git a/arch/Kconfig b/arch/Kconfig
index 5b448a7..a6f14f6 100644
--- a/arch/Kconfig
+++ b/arch/Kconfig
@@ -120,6 +120,9 @@ config HAVE_KRETPROBES
config HAVE_OPTPROBES
bool
+
+config HAVE_NMI_WATCHDOG
+ bool
#
# An arch should select this if it provides all these things:
#
diff --git a/arch/alpha/include/asm/mman.h b/arch/alpha/include/asm/mman.h
index 72db984..cbeb361 100644
--- a/arch/alpha/include/asm/mman.h
+++ b/arch/alpha/include/asm/mman.h
@@ -56,6 +56,10 @@
#define MADV_HUGEPAGE 14 /* Worth backing with hugepages */
#define MADV_NOHUGEPAGE 15 /* Not worth backing with hugepages */
+#define MADV_DONTDUMP 16 /* Explicity exclude from the core dump,
+ overrides the coredump filter bits */
+#define MADV_DODUMP 17 /* Clear the MADV_NODUMP flag */
+
/* compatibility flags */
#define MAP_FILE 0
diff --git a/arch/arm/include/asm/pgtable-nommu.h b/arch/arm/include/asm/pgtable-nommu.h
index ffc0e857..7ec60d60 100644
--- a/arch/arm/include/asm/pgtable-nommu.h
+++ b/arch/arm/include/asm/pgtable-nommu.h
@@ -79,7 +79,6 @@ extern unsigned int kobjsize(const void *objp);
* No page table caches to initialise.
*/
#define pgtable_cache_init() do { } while (0)
-#define io_remap_page_range remap_page_range
#define io_remap_pfn_range remap_pfn_range
diff --git a/arch/arm/kernel/process.c b/arch/arm/kernel/process.c
index c2ae3cd..219e4ef 100644
--- a/arch/arm/kernel/process.c
+++ b/arch/arm/kernel/process.c
@@ -533,8 +533,7 @@ int vectors_user_mapping(void)
struct mm_struct *mm = current->mm;
return install_special_mapping(mm, 0xffff0000, PAGE_SIZE,
VM_READ | VM_EXEC |
- VM_MAYREAD | VM_MAYEXEC |
- VM_ALWAYSDUMP | VM_RESERVED,
+ VM_MAYREAD | VM_MAYEXEC | VM_RESERVED,
NULL);
}
diff --git a/arch/blackfin/Kconfig b/arch/blackfin/Kconfig
index abe5a9e..c1269a1 100644
--- a/arch/blackfin/Kconfig
+++ b/arch/blackfin/Kconfig
@@ -36,6 +36,7 @@ config BLACKFIN
select GENERIC_ATOMIC64
select GENERIC_IRQ_PROBE
select IRQ_PER_CPU if SMP
+ select HAVE_NMI_WATCHDOG if NMI_WATCHDOG
config GENERIC_CSUM
def_bool y
diff --git a/arch/blackfin/include/asm/irq.h b/arch/blackfin/include/asm/irq.h
index 12f4060..89de539 100644
--- a/arch/blackfin/include/asm/irq.h
+++ b/arch/blackfin/include/asm/irq.h
@@ -38,8 +38,4 @@
#include <asm-generic/irq.h>
-#ifdef CONFIG_NMI_WATCHDOG
-# define ARCH_HAS_NMI_WATCHDOG
-#endif
-
#endif /* _BFIN_IRQ_H_ */
diff --git a/arch/c6x/include/asm/pgtable.h b/arch/c6x/include/asm/pgtable.h
index 68c8af4..38a4312 100644
--- a/arch/c6x/include/asm/pgtable.h
+++ b/arch/c6x/include/asm/pgtable.h
@@ -73,9 +73,6 @@ extern unsigned long empty_zero_page;
#define pgtable_cache_init() do { } while (0)
#define io_remap_pfn_range remap_pfn_range
-#define io_remap_page_range(vma, vaddr, paddr, size, prot) \
- remap_pfn_range(vma, vaddr, (paddr) >> PAGE_SHIFT, size, prot)
-
#include <asm-generic/pgtable.h>
#endif /* _ASM_C6X_PGTABLE_H */
diff --git a/arch/hexagon/kernel/signal.c b/arch/hexagon/kernel/signal.c
index b45be31..ecbab34 100644
--- a/arch/hexagon/kernel/signal.c
+++ b/arch/hexagon/kernel/signal.c
@@ -192,12 +192,7 @@ static int handle_signal(int sig, siginfo_t *info, struct k_sigaction *ka,
if (rc)
return rc;
- spin_lock_irq(&current->sighand->siglock);
- sigorsets(&current->blocked, &current->blocked, &ka->sa.sa_mask);
- if (!(ka->sa.sa_flags & SA_NODEFER))
- sigaddset(&current->blocked, sig);
- recalc_sigpending();
- spin_unlock_irq(&current->sighand->siglock);
+ block_sigmask(ka, sig);
return 0;
}
@@ -305,10 +300,7 @@ asmlinkage int sys_rt_sigreturn(void)
goto badframe;
sigdelsetmask(&blocked, ~_BLOCKABLE);
- spin_lock_irq(&current->sighand->siglock);
- current->blocked = blocked;
- recalc_sigpending();
- spin_unlock_irq(&current->sighand->siglock);
+ set_current_blocked(&blocked);
if (restore_sigcontext(regs, &frame->uc.uc_mcontext))
goto badframe;
diff --git a/arch/hexagon/kernel/vdso.c b/arch/hexagon/kernel/vdso.c
index 16277c3..f212a45 100644
--- a/arch/hexagon/kernel/vdso.c
+++ b/arch/hexagon/kernel/vdso.c
@@ -78,8 +78,7 @@ int arch_setup_additional_pages(struct linux_binprm *bprm, int uses_interp)
/* MAYWRITE to allow gdb to COW and set breakpoints. */
ret = install_special_mapping(mm, vdso_base, PAGE_SIZE,
VM_READ|VM_EXEC|
- VM_MAYREAD|VM_MAYWRITE|VM_MAYEXEC|
- VM_ALWAYSDUMP,
+ VM_MAYREAD|VM_MAYWRITE|VM_MAYEXEC,
&vdso_page);
if (ret)
diff --git a/arch/microblaze/include/asm/pgtable.h b/arch/microblaze/include/asm/pgtable.h
index b2af423..44dc67a 100644
--- a/arch/microblaze/include/asm/pgtable.h
+++ b/arch/microblaze/include/asm/pgtable.h
@@ -543,8 +543,6 @@ extern unsigned long iopa(unsigned long addr);
/* Needs to be defined here and not in linux/mm.h, as it is arch dependent */
#define kern_addr_valid(addr) (1)
-#define io_remap_page_range remap_page_range
-
/*
* No page table caches to initialise
*/
diff --git a/arch/mips/include/asm/mman.h b/arch/mips/include/asm/mman.h
index 785b4ea..46d3da0 100644
--- a/arch/mips/include/asm/mman.h
+++ b/arch/mips/include/asm/mman.h
@@ -80,6 +80,10 @@
#define MADV_HUGEPAGE 14 /* Worth backing with hugepages */
#define MADV_NOHUGEPAGE 15 /* Not worth backing with hugepages */
+#define MADV_DONTDUMP 16 /* Explicity exclude from the core dump,
+ overrides the coredump filter bits */
+#define MADV_DODUMP 17 /* Clear the MADV_NODUMP flag */
+
/* compatibility flags */
#define MAP_FILE 0
diff --git a/arch/mips/kernel/vdso.c b/arch/mips/kernel/vdso.c
index e5cdfd6..0f1af58 100644
--- a/arch/mips/kernel/vdso.c
+++ b/arch/mips/kernel/vdso.c
@@ -88,8 +88,7 @@ int arch_setup_additional_pages(struct linux_binprm *bprm, int uses_interp)
ret = install_special_mapping(mm, addr, PAGE_SIZE,
VM_READ|VM_EXEC|
- VM_MAYREAD|VM_MAYWRITE|VM_MAYEXEC|
- VM_ALWAYSDUMP,
+ VM_MAYREAD|VM_MAYWRITE|VM_MAYEXEC,
&vdso_page);
if (ret)
diff --git a/arch/mn10300/Kconfig b/arch/mn10300/Kconfig
index 8f1c40d..3aa3de0 100644
--- a/arch/mn10300/Kconfig
+++ b/arch/mn10300/Kconfig
@@ -5,6 +5,7 @@ config MN10300
select GENERIC_IRQ_SHOW
select HAVE_ARCH_TRACEHOOK
select HAVE_ARCH_KGDB
+ select HAVE_NMI_WATCHDOG if MN10300_WD_TIMER
config AM33_2
def_bool n
diff --git a/arch/mn10300/include/asm/reset-regs.h b/arch/mn10300/include/asm/reset-regs.h
index 10c7502..8ca2a42 100644
--- a/arch/mn10300/include/asm/reset-regs.h
+++ b/arch/mn10300/include/asm/reset-regs.h
@@ -17,10 +17,6 @@
#ifdef __KERNEL__
-#ifdef CONFIG_MN10300_WD_TIMER
-#define ARCH_HAS_NMI_WATCHDOG /* See include/linux/nmi.h */
-#endif
-
/*
* watchdog timer registers
*/
diff --git a/arch/openrisc/include/asm/pgtable.h b/arch/openrisc/include/asm/pgtable.h
index 043505d..14c900c 100644
--- a/arch/openrisc/include/asm/pgtable.h
+++ b/arch/openrisc/include/asm/pgtable.h
@@ -455,7 +455,6 @@ static inline void update_mmu_cache(struct vm_area_struct *vma,
* No page table caches to initialise
*/
#define pgtable_cache_init() do { } while (0)
-#define io_remap_page_range remap_page_range
typedef pte_t *pte_addr_t;
diff --git a/arch/parisc/include/asm/mman.h b/arch/parisc/include/asm/mman.h
index f5b7bf5..12219eb 100644
--- a/arch/parisc/include/asm/mman.h
+++ b/arch/parisc/include/asm/mman.h
@@ -62,6 +62,10 @@
#define MADV_HUGEPAGE 67 /* Worth backing with hugepages */
#define MADV_NOHUGEPAGE 68 /* Not worth backing with hugepages */
+#define MADV_DONTDUMP 69 /* Explicity exclude from the core dump,
+ overrides the coredump filter bits */
+#define MADV_DODUMP 70 /* Clear the MADV_NODUMP flag */
+
/* compatibility flags */
#define MAP_FILE 0
#define MAP_VARIABLE 0
diff --git a/arch/powerpc/kernel/vdso.c b/arch/powerpc/kernel/vdso.c
index 7d14bb69..d36ee10 100644
--- a/arch/powerpc/kernel/vdso.c
+++ b/arch/powerpc/kernel/vdso.c
@@ -263,17 +263,11 @@ int arch_setup_additional_pages(struct linux_binprm *bprm, int uses_interp)
* the "data" page of the vDSO or you'll stop getting kernel updates
* and your nice userland gettimeofday will be totally dead.
* It's fine to use that for setting breakpoints in the vDSO code
- * pages though
- *
- * Make sure the vDSO gets into every core dump.
- * Dumping its contents makes post-mortem fully interpretable later
- * without matching up the same kernel and hardware config to see
- * what PC values meant.
+ * pages though.
*/
rc = install_special_mapping(mm, vdso_base, vdso_pages << PAGE_SHIFT,
VM_READ|VM_EXEC|
- VM_MAYREAD|VM_MAYWRITE|VM_MAYEXEC|
- VM_ALWAYSDUMP,
+ VM_MAYREAD|VM_MAYWRITE|VM_MAYEXEC,
vdso_pagelist);
if (rc) {
current->mm->context.vdso_base = 0;
diff --git a/arch/s390/kernel/vdso.c b/arch/s390/kernel/vdso.c
index e704a99..9c80138 100644
--- a/arch/s390/kernel/vdso.c
+++ b/arch/s390/kernel/vdso.c
@@ -241,17 +241,11 @@ int arch_setup_additional_pages(struct linux_binprm *bprm, int uses_interp)
* on the "data" page of the vDSO or you'll stop getting kernel
* updates and your nice userland gettimeofday will be totally dead.
* It's fine to use that for setting breakpoints in the vDSO code
- * pages though
- *
- * Make sure the vDSO gets into every core dump.
- * Dumping its contents makes post-mortem fully interpretable later
- * without matching up the same kernel and hardware config to see
- * what PC values meant.
+ * pages though.
*/
rc = install_special_mapping(mm, vdso_base, vdso_pages << PAGE_SHIFT,
VM_READ|VM_EXEC|
- VM_MAYREAD|VM_MAYWRITE|VM_MAYEXEC|
- VM_ALWAYSDUMP,
+ VM_MAYREAD|VM_MAYWRITE|VM_MAYEXEC,
vdso_pagelist);
if (rc)
current->mm->context.vdso_base = 0;
diff --git a/arch/sh/kernel/vsyscall/vsyscall.c b/arch/sh/kernel/vsyscall/vsyscall.c
index 1d6d51a..5ca5797 100644
--- a/arch/sh/kernel/vsyscall/vsyscall.c
+++ b/arch/sh/kernel/vsyscall/vsyscall.c
@@ -73,8 +73,7 @@ int arch_setup_additional_pages(struct linux_binprm *bprm, int uses_interp)
ret = install_special_mapping(mm, addr, PAGE_SIZE,
VM_READ | VM_EXEC |
- VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC |
- VM_ALWAYSDUMP,
+ VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC,
syscall_pages);
if (unlikely(ret))
goto up_fail;
diff --git a/arch/sparc/Kconfig b/arch/sparc/Kconfig
index ca5580e..1666de8 100644
--- a/arch/sparc/Kconfig
+++ b/arch/sparc/Kconfig
@@ -29,6 +29,7 @@ config SPARC
select GENERIC_IRQ_SHOW
select USE_GENERIC_SMP_HELPERS if SMP
select GENERIC_PCI_IOMAP
+ select HAVE_NMI_WATCHDOG if SPARC64
config SPARC32
def_bool !64BIT
diff --git a/arch/sparc/include/asm/irq_64.h b/arch/sparc/include/asm/irq_64.h
index 16dcae6d..abf6afe 100644
--- a/arch/sparc/include/asm/irq_64.h
+++ b/arch/sparc/include/asm/irq_64.h
@@ -95,7 +95,6 @@ void arch_trigger_all_cpu_backtrace(void);
extern void *hardirq_stack[NR_CPUS];
extern void *softirq_stack[NR_CPUS];
#define __ARCH_HAS_DO_SOFTIRQ
-#define ARCH_HAS_NMI_WATCHDOG
#define NO_IRQ 0xffffffff
diff --git a/arch/tile/mm/elf.c b/arch/tile/mm/elf.c
index 55e58e9..1a00fb6 100644
--- a/arch/tile/mm/elf.c
+++ b/arch/tile/mm/elf.c
@@ -117,17 +117,11 @@ int arch_setup_additional_pages(struct linux_binprm *bprm,
/*
* MAYWRITE to allow gdb to COW and set breakpoints
- *
- * Make sure the vDSO gets into every core dump. Dumping its
- * contents makes post-mortem fully interpretable later
- * without matching up the same kernel and hardware config to
- * see what PC values meant.
*/
vdso_base = VDSO_BASE;
retval = install_special_mapping(mm, vdso_base, PAGE_SIZE,
VM_READ|VM_EXEC|
- VM_MAYREAD|VM_MAYWRITE|VM_MAYEXEC|
- VM_ALWAYSDUMP,
+ VM_MAYREAD|VM_MAYWRITE|VM_MAYEXEC,
vdso_pages);
#ifndef __tilegx__
diff --git a/arch/um/kernel/signal.c b/arch/um/kernel/signal.c
index e8b889d..fb12f4c 100644
--- a/arch/um/kernel/signal.c
+++ b/arch/um/kernel/signal.c
@@ -65,21 +65,10 @@ static int handle_signal(struct pt_regs *regs, unsigned long signr,
#endif
err = setup_signal_stack_si(sp, signr, ka, regs, info, oldset);
- if (err) {
- spin_lock_irq(&current->sighand->siglock);
- current->blocked = *oldset;
- recalc_sigpending();
- spin_unlock_irq(&current->sighand->siglock);
+ if (err)
force_sigsegv(signr, current);
- } else {
- spin_lock_irq(&current->sighand->siglock);
- sigorsets(&current->blocked, &current->blocked,
- &ka->sa.sa_mask);
- if (!(ka->sa.sa_flags & SA_NODEFER))
- sigaddset(&current->blocked, signr);
- recalc_sigpending();
- spin_unlock_irq(&current->sighand->siglock);
- }
+ else
+ block_sigmask(ka, signr);
return err;
}
@@ -162,12 +151,11 @@ int do_signal(void)
*/
long sys_sigsuspend(int history0, int history1, old_sigset_t mask)
{
+ sigset_t blocked;
+
mask &= _BLOCKABLE;
- spin_lock_irq(&current->sighand->siglock);
- current->saved_sigmask = current->blocked;
- siginitset(&current->blocked, mask);
- recalc_sigpending();
- spin_unlock_irq(&current->sighand->siglock);
+ siginitset(&blocked, mask);
+ set_current_blocked(&blocked);
current->state = TASK_INTERRUPTIBLE;
schedule();
diff --git a/arch/unicore32/kernel/process.c b/arch/unicore32/kernel/process.c
index 52edc2b..432b429 100644
--- a/arch/unicore32/kernel/process.c
+++ b/arch/unicore32/kernel/process.c
@@ -381,7 +381,7 @@ int vectors_user_mapping(void)
return install_special_mapping(mm, 0xffff0000, PAGE_SIZE,
VM_READ | VM_EXEC |
VM_MAYREAD | VM_MAYEXEC |
- VM_ALWAYSDUMP | VM_RESERVED,
+ VM_RESERVED,
NULL);
}
diff --git a/arch/x86/kernel/cpu/perf_event.c b/arch/x86/kernel/cpu/perf_event.c
index 0a18d16..fa2900c 100644
--- a/arch/x86/kernel/cpu/perf_event.c
+++ b/arch/x86/kernel/cpu/perf_event.c
@@ -643,14 +643,14 @@ static bool __perf_sched_find_counter(struct perf_sched *sched)
/* Prefer fixed purpose counters */
if (x86_pmu.num_counters_fixed) {
idx = X86_PMC_IDX_FIXED;
- for_each_set_bit_cont(idx, c->idxmsk, X86_PMC_IDX_MAX) {
+ for_each_set_bit_from(idx, c->idxmsk, X86_PMC_IDX_MAX) {
if (!__test_and_set_bit(idx, sched->state.used))
goto done;
}
}
/* Grab the first unused counter starting with idx */
idx = sched->state.counter;
- for_each_set_bit_cont(idx, c->idxmsk, X86_PMC_IDX_FIXED) {
+ for_each_set_bit_from(idx, c->idxmsk, X86_PMC_IDX_FIXED) {
if (!__test_and_set_bit(idx, sched->state.used))
goto done;
}
diff --git a/arch/x86/kernel/irqinit.c b/arch/x86/kernel/irqinit.c
index 313fb5c..43e2b1cf 100644
--- a/arch/x86/kernel/irqinit.c
+++ b/arch/x86/kernel/irqinit.c
@@ -306,10 +306,10 @@ void __init native_init_IRQ(void)
* us. (some of these will be overridden and become
* 'special' SMP interrupts)
*/
- for (i = FIRST_EXTERNAL_VECTOR; i < NR_VECTORS; i++) {
+ i = FIRST_EXTERNAL_VECTOR;
+ for_each_clear_bit_from(i, used_vectors, NR_VECTORS) {
/* IA32_SYSCALL_VECTOR could be used in trap_init already. */
- if (!test_bit(i, used_vectors))
- set_intr_gate(i, interrupt[i-FIRST_EXTERNAL_VECTOR]);
+ set_intr_gate(i, interrupt[i - FIRST_EXTERNAL_VECTOR]);
}
if (!acpi_ioapic && !of_ioapic)
diff --git a/arch/x86/um/mem_32.c b/arch/x86/um/mem_32.c
index 639900a..f40281e 100644
--- a/arch/x86/um/mem_32.c
+++ b/arch/x86/um/mem_32.c
@@ -23,14 +23,6 @@ static int __init gate_vma_init(void)
gate_vma.vm_flags = VM_READ | VM_MAYREAD | VM_EXEC | VM_MAYEXEC;
gate_vma.vm_page_prot = __P101;
- /*
- * Make sure the vDSO gets into every core dump.
- * Dumping its contents makes post-mortem fully interpretable later
- * without matching up the same kernel and hardware config to see
- * what PC values meant.
- */
- gate_vma.vm_flags |= VM_ALWAYSDUMP;
-
return 0;
}
__initcall(gate_vma_init);
diff --git a/arch/x86/um/vdso/vma.c b/arch/x86/um/vdso/vma.c
index 91f4ec9..af91901 100644
--- a/arch/x86/um/vdso/vma.c
+++ b/arch/x86/um/vdso/vma.c
@@ -64,8 +64,7 @@ int arch_setup_additional_pages(struct linux_binprm *bprm, int uses_interp)
err = install_special_mapping(mm, um_vdso_addr, PAGE_SIZE,
VM_READ|VM_EXEC|
- VM_MAYREAD|VM_MAYWRITE|VM_MAYEXEC|
- VM_ALWAYSDUMP,
+ VM_MAYREAD|VM_MAYWRITE|VM_MAYEXEC,
vdsop);
up_write(&mm->mmap_sem);
diff --git a/arch/x86/vdso/vdso32-setup.c b/arch/x86/vdso/vdso32-setup.c
index 468d591..a944020 100644
--- a/arch/x86/vdso/vdso32-setup.c
+++ b/arch/x86/vdso/vdso32-setup.c
@@ -250,13 +250,7 @@ static int __init gate_vma_init(void)
gate_vma.vm_end = FIXADDR_USER_END;
gate_vma.vm_flags = VM_READ | VM_MAYREAD | VM_EXEC | VM_MAYEXEC;
gate_vma.vm_page_prot = __P101;
- /*
- * Make sure the vDSO gets into every core dump.
- * Dumping its contents makes post-mortem fully interpretable later
- * without matching up the same kernel and hardware config to see
- * what PC values meant.
- */
- gate_vma.vm_flags |= VM_ALWAYSDUMP;
+
return 0;
}
@@ -343,17 +337,10 @@ int arch_setup_additional_pages(struct linux_binprm *bprm, int uses_interp)
if (compat_uses_vma || !compat) {
/*
* MAYWRITE to allow gdb to COW and set breakpoints
- *
- * Make sure the vDSO gets into every core dump.
- * Dumping its contents makes post-mortem fully
- * interpretable later without matching up the same
- * kernel and hardware config to see what PC values
- * meant.
*/
ret = install_special_mapping(mm, addr, PAGE_SIZE,
VM_READ|VM_EXEC|
- VM_MAYREAD|VM_MAYWRITE|VM_MAYEXEC|
- VM_ALWAYSDUMP,
+ VM_MAYREAD|VM_MAYWRITE|VM_MAYEXEC,
vdso32_pages);
if (ret)
diff --git a/arch/x86/vdso/vma.c b/arch/x86/vdso/vma.c
index 153407c..17e1827 100644
--- a/arch/x86/vdso/vma.c
+++ b/arch/x86/vdso/vma.c
@@ -124,8 +124,7 @@ int arch_setup_additional_pages(struct linux_binprm *bprm, int uses_interp)
ret = install_special_mapping(mm, addr, vdso_size,
VM_READ|VM_EXEC|
- VM_MAYREAD|VM_MAYWRITE|VM_MAYEXEC|
- VM_ALWAYSDUMP,
+ VM_MAYREAD|VM_MAYWRITE|VM_MAYEXEC,
vdso_pages);
if (ret) {
current->mm->context.vdso = NULL;
diff --git a/arch/xtensa/include/asm/mman.h b/arch/xtensa/include/asm/mman.h
index 3078901..25bc6c1 100644
--- a/arch/xtensa/include/asm/mman.h
+++ b/arch/xtensa/include/asm/mman.h
@@ -86,6 +86,10 @@
#define MADV_HUGEPAGE 14 /* Worth backing with hugepages */
#define MADV_NOHUGEPAGE 15 /* Not worth backing with hugepages */
+#define MADV_DONTDUMP 16 /* Explicity exclude from the core dump,
+ overrides the coredump filter bits */
+#define MADV_DODUMP 17 /* Clear the MADV_NODUMP flag */
+
/* compatibility flags */
#define MAP_FILE 0
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