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cfee9eddcd61e28b73468647fc4aa7ff2d706254
linux/arch/x86/kernel
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Josh Poimboeuf cfee9eddcd x86/unwind: Fix oprofile module link error 
When compiling on x86 with CONFIG_OPROFILE=m and CONFIG_FRAME_POINTER=n,
the oprofile module fails to link:

  ERROR: ftrace_graph_ret_addr" [arch/x86/oprofile/oprofile.ko] undefined!

The problem was introduced when oprofile was converted to use the new
x86 unwinder.  When frame pointers are disabled, the "guess" unwinder's
unwind_get_return_address() is an inline function which calls
ftrace_graph_ret_addr(), which is not exported.

Fix it by converting the "guess" version of unwind_get_return_address()
to an exported out-of-line function, just like its frame pointer
counterpart.

Reported-by: Karl Beldan <karl.beldan@gmail.com>
Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Fixes: ec2ad9ccf1 ("oprofile/x86: Convert x86_backtrace() to use the new unwinder")
Link: http://lkml.kernel.org/r/be08d589f6474df78364e081c42777e382af9352.1475731632.git.jpoimboe@redhat.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-10-06 09:52:20 +02:00
..
acpi
Merge branch 'x86-asm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2016-10-03 16:13:28 -07:00
apic
x86/irq: Prevent force migration of irqs which are not in the vector domain
2016-10-04 13:13:47 +02:00
cpu
x86/vmware: Skip lapic calibration on VMware
2016-10-05 11:43:30 +02:00
fpu
x86/asm: Move the thread_info::status field to thread_struct
2016-09-15 08:25:12 +02:00
kprobes
x86: Migrate exception table users off module.h and onto extable.h
2016-09-20 01:05:43 +02:00
.gitignore
…
alternative.c
x86/asm: Stop depending on ptrace.h in alternative.h
2016-04-29 11:56:40 +02:00
amd_gart_64.c
dma-mapping: use unsigned long for dma_attrs
2016-08-04 08:50:07 -04:00
amd_nb.c
Merge branch 'x86-headers-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2016-08-01 14:23:42 -04:00
apb_timer.c
x86/apb_timer: Convert to hotplug state machine
2016-07-15 10:40:22 +02:00
aperture_64.c
param: convert some "on"/"off" users to strtobool
2016-03-17 15:09:34 -07:00
apm_32.c
x86/apm32: Remove paravirt_enabled() use
2016-04-22 10:29:03 +02:00
asm-offsets_32.c
sched/x86: Rewrite the switch_to() code
2016-08-24 12:31:41 +02:00
asm-offsets_64.c
sched/x86: Rewrite the switch_to() code
2016-08-24 12:31:41 +02:00
asm-offsets.c
x86: Move thread_info into task_struct
2016-09-15 08:25:13 +02:00
audit_64.c
x86: hook up execveat system call
2014-12-13 12:42:51 -08:00
bootflag.c
x86: don't use module_init for non-modular core bootflag code
2015-06-16 14:12:34 -04:00
check.c
Merge tag 'v4.2-rc8' into x86/mm, before applying new changes
2015-08-25 09:59:19 +02:00
cpuid.c
new helpers: no_seek_end_llseek{,_size}()
2015-12-23 10:41:31 -05:00
crash_dump_32.c
…
crash_dump_64.c
…
crash.c
x86/kernel: Audit and remove any unnecessary uses of module.h
2016-07-14 15:06:41 +02:00
devicetree.c
x86/cpufeature: Replace cpu_has_apic with boot_cpu_has() usage
2016-04-13 11:37:41 +02:00
doublefault.c
…
dumpstack_32.c
x86/dumpstack: Remove dump_trace() and related callbacks
2016-09-20 08:29:34 +02:00
dumpstack_64.c
x86/dumpstack: Remove dump_trace() and related callbacks
2016-09-20 08:29:34 +02:00
dumpstack.c
x86/dumpstack: Fix show_stack() task pointer regression
2016-09-20 23:36:37 +02:00
e820.c
x86/boot: Fix kdump, cleanup aborted E820_PRAM max_pfn manipulation
2016-09-22 12:26:48 +02:00
early_printk.c
x86: Fix misspellings in comments
2016-02-24 08:44:58 +01:00
early-quirks.c
x86/e820: Prepare e280 code for switch to dynamic storage
2016-09-21 15:02:12 +02:00
ebda.c
x86/boot: Simplify EBDA-vs-BIOS reservation logic
2016-07-22 11:46:01 +02:00
espfix_64.c
x86: get rid of superfluous __GFP_REPEAT
2016-06-24 17:23:52 -07:00
ftrace.c
ftrace/x86: Implement HAVE_FUNCTION_GRAPH_RET_ADDR_PTR
2016-08-24 12:15:15 +02:00
head32.c
x86/boot: Run reserve_bios_regions() after we initialize the memory map
2016-08-11 11:14:59 +02:00
head64.c
x86/boot: Run reserve_bios_regions() after we initialize the memory map
2016-08-11 11:14:59 +02:00
head_32.S
x86/asm/head: Rename 'stack_start' -> 'initial_stack'
2016-08-18 18:41:29 +02:00
head_64.S
x86/head: Remove useless zeroed word
2016-08-18 18:41:30 +02:00
hpet.c
x86/hpet: Reduce HPET counter read contention
2016-09-09 15:16:19 +02:00
hw_breakpoint.c
x86/kernel: Audit and remove any unnecessary uses of module.h
2016-07-14 15:06:41 +02:00
i386_ksyms_32.c
Merge branch 'x86-headers-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2016-08-01 14:23:42 -04:00
i8237.c
…
i8253.c
x86/kernel: Audit and remove any unnecessary uses of module.h
2016-07-14 15:06:41 +02:00
i8259.c
x86/irq: Probe for PIC presence before allocating descs for legacy IRQs
2015-11-07 10:37:37 +01:00
io_delay.c
x86/kernel: Audit and remove any unnecessary uses of module.h
2016-07-14 15:06:41 +02:00
ioport.c
x86/iopl: Fix iopl capability check on Xen PV
2016-03-17 09:49:27 +01:00
irq_32.c
x86/kernel: Audit and remove any unnecessary uses of module.h
2016-07-14 15:06:41 +02:00
irq_64.c
x86: Move thread_info into task_struct
2016-09-15 08:25:13 +02:00
irq_work.c
treewide: Remove old email address
2015-11-23 09:44:58 +01:00
irq.c
x86/irq: Do not substract irq_tlb_count from irq_call_count
2016-08-11 11:14:59 +02:00
irqinit.c
x86/irq: Store irq descriptor in vector array
2015-08-06 00:14:59 +02:00
jump_label.c
x86/asm: Stop depending on ptrace.h in alternative.h
2016-04-29 11:56:40 +02:00
kdebugfs.c
x86/kernel: Audit and remove any unnecessary uses of module.h
2016-07-14 15:06:41 +02:00
kexec-bzimage64.c
x86/e820: Prepare e280 code for switch to dynamic storage
2016-09-21 15:02:12 +02:00
kgdb.c
sched/x86: Add 'struct inactive_task_frame' to better document the sleeping task stack frame
2016-08-24 12:27:41 +02:00
ksysfs.c
x86: Apply more __ro_after_init and const
2016-08-10 14:55:05 +02:00
kvm.c
Merge branch 'smp-hotplug-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2016-10-03 19:43:08 -07:00
kvmclock.c
Merge branch 'linus' into x86/asm, to pick up recent fixes
2016-09-15 08:24:53 +02:00
ldt.c
x86/mm: Factor out LDT init from context init
2016-02-18 19:46:31 +01:00
machine_kexec_32.c
x86, irq: Move IOAPIC related declarations from hw_irq.h into io_apic.h
2014-12-16 14:08:17 +01:00
machine_kexec_64.c
kexec: provide arch_kexec_protect(unprotect)_crashkres()
2016-05-23 17:04:14 -07:00
Makefile
x86/unwind: Add new unwind interface and implementations
2016-09-20 08:29:33 +02:00
mcount_64.S
ftrace/x86: Set ftrace_stub to weak to prevent gcc from using short jumps to it
2016-05-20 13:28:40 -04:00
mmconf-fam10h_64.c
…
module.c
x86/asm: Stop depending on ptrace.h in alternative.h
2016-04-29 11:56:40 +02:00
mpparse.c
x86/mm/numa: Open code function early_get_boot_cpu_id()
2016-08-15 08:51:54 +02:00
msr.c
x86/cpufeature: Carve out X86_FEATURE_*
2016-01-30 11:22:17 +01:00
nmi_selftest.c
…
nmi.c
x86: include linux/ratelimit.h in nmi.c
2016-06-06 17:10:15 +02:00
paravirt_patch_32.c
x86, locking/spinlocks: Remove ticket (spin)lock implementation
2016-09-30 10:56:00 +02:00
paravirt_patch_64.c
x86, locking/spinlocks: Remove ticket (spin)lock implementation
2016-09-30 10:56:00 +02:00
paravirt-spinlocks.c
x86, locking/spinlocks: Remove ticket (spin)lock implementation
2016-09-30 10:56:00 +02:00
paravirt.c
x86/asm: Get rid of __read_cr4_safe()
2016-09-30 12:40:12 +02:00
pci-calgary_64.c
dma-mapping: use unsigned long for dma_attrs
2016-08-04 08:50:07 -04:00
pci-dma.c
dma-mapping: use unsigned long for dma_attrs
2016-08-04 08:50:07 -04:00
pci-iommu_table.c
x86: Fix non-static inlines
2016-04-16 13:21:40 +02:00
pci-nommu.c
dma-mapping: use unsigned long for dma_attrs
2016-08-04 08:50:07 -04:00
pci-swiotlb.c
dma-mapping: use unsigned long for dma_attrs
2016-08-04 08:50:07 -04:00
pcspeaker.c
…
perf_regs.c
perf/x86/64: Report regs_user->ax too in get_regs_user()
2015-04-11 13:08:53 +02:00
platform-quirks.c
x86/boot: Reorganize and clean up the BIOS area reservation code
2016-07-21 10:11:57 +02:00
pmem.c
x86/kernel: Audit and remove any unnecessary uses of module.h
2016-07-14 15:06:41 +02:00
probe_roms.c
…
process_32.c
x86/asm: Get rid of __read_cr4_safe()
2016-09-30 12:40:12 +02:00
process_64.c
Merge branch 'x86-vdso-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2016-10-03 17:29:01 -07:00
process.c
x86/process: Pin the target stack in get_wchan()
2016-09-16 09:18:53 +02:00
ptrace.c
Merge branch 'x86-vdso-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2016-10-03 17:29:01 -07:00
pvclock.c
pvclock: introduce seqcount-like API
2016-08-04 13:52:21 +02:00
quirks.c
x86/mce: Add PCI quirks to identify Xeons with machine check recovery
2016-09-05 11:47:31 +02:00
reboot_fixups_32.c
…
reboot.c
x86: Apply more __ro_after_init and const
2016-08-10 14:55:05 +02:00
relocate_kernel_32.S
x86/asm: Optimize unnecessarily wide TEST instructions
2015-03-07 11:12:43 +01:00
relocate_kernel_64.S
x86/asm: Replace "MOVQ $imm, %reg" with MOVL
2015-04-01 13:17:39 +02:00
resource.c
x86/e820: Prepare e280 code for switch to dynamic storage
2016-09-21 15:02:12 +02:00
rtc.c
char/genrtc: x86: remove remnants of asm/rtc.h
2016-06-04 00:20:07 +02:00
setup_percpu.c
Merge branch 'x86/mm' into x86/asm, to unify the two branches for simplicity
2016-09-08 08:41:52 +02:00
setup.c
Merge branch 'x86-boot-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2016-10-03 16:46:53 -07:00
signal_compat.c
x86/signal: Add SA_{X32,IA32}_ABI sa_flags
2016-09-14 21:28:11 +02:00
signal.c
Merge branch 'x86-vdso-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2016-10-03 17:29:01 -07:00
smp.c
x86/smp: Remove single IPI wrapper
2015-11-05 13:07:54 +01:00
smpboot.c
Merge branch 'smp-hotplug-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2016-10-03 19:43:08 -07:00
stacktrace.c
x86/stacktrace: Convert save_stack_trace_*() to use the new unwinder
2016-09-20 08:29:33 +02:00
step.c
Merge branch 'x86/urgent' into x86/asm to fix up conflicts and to pick up fixes
2015-08-18 09:39:47 +02:00
sys_x86_64.c
x86/mm: Improve AMD Bulldozer ASLR workaround
2015-03-31 10:01:17 +02:00
sysfb_efi.c
Merge branch 'linus' into efi/core, to pick up fixes
2016-05-07 07:00:07 +02:00
sysfb_simplefb.c
x86/simplefb: Use PTR_ERR_OR_ZERO
2014-10-17 13:40:52 -07:00
sysfb.c
x86/sysfb: Use PTR_ERR_OR_ZERO
2014-10-17 13:40:52 -07:00
tboot.c
x86/e820: Prepare e280 code for switch to dynamic storage
2016-09-21 15:02:12 +02:00
tce_64.c
x86/cpufeature: Remove cpu_has_clflush
2016-03-31 13:35:09 +02:00
test_nx.c
x86/mm: Always enable CONFIG_DEBUG_RODATA and remove the Kconfig option
2016-02-22 08:51:38 +01:00
test_rodata.c
x86: Don't use module.h just for AUTHOR / LICENSE tags
2016-07-14 13:04:20 +02:00
time.c
x86/asm/entry: Change all 'user_mode_vm()' calls to 'user_mode()'
2015-03-23 11:14:17 +01:00
tls.c
x86/tls: Synchronize segment registers in set_thread_area()
2016-04-29 11:56:42 +02:00
tls.h
…
topology.c
x86: Drop bogus __ref / __refdata annotations
2015-07-20 18:57:20 +02:00
trace_clock.c
x86/asm/tsc: Add rdtsc_ordered() and use it in trivial call sites
2015-07-06 15:23:29 +02:00
tracepoint.c
…
traps.c
x86/mm: Improve stack-overflow #PF handling
2016-09-08 08:47:20 +02:00
tsc_msr.c
x86/tsc_msr: Remove irqoff around MSR-based TSC enumeration
2016-07-11 21:30:12 +02:00
tsc_sync.c
x86/asm/tsc/sync: Use rdtsc_ordered() in check_tsc_warp() and drop extra barriers
2015-07-06 15:23:29 +02:00
tsc.c
x86/tsc: Add additional Intel CPU models to the crystal quirk list
2016-09-20 01:00:32 +02:00
unwind_frame.c
x86/unwind: Add new unwind interface and implementations
2016-09-20 08:29:33 +02:00
unwind_guess.c
x86/unwind: Fix oprofile module link error
2016-10-06 09:52:20 +02:00
uprobes.c
uprobes/x86: Fix RIP-relative handling of EVEX-encoded instructions
2016-08-12 08:29:24 +02:00
verify_cpu.S
x86/cpufeature: Carve out X86_FEATURE_*
2016-01-30 11:22:17 +01:00
vm86_32.c
x86, bitops: remove use of "sbb" to return CF
2016-06-08 12:41:20 -07:00
vmlinux.lds.S
x86/boot: Move compressed kernel to the end of the decompression buffer
2016-04-29 11:03:29 +02:00
vsmp_64.c
x86: replace __init_or_module with __init in non-modular vsmp_64.c
2015-06-16 14:12:41 -04:00
x86_init.c
x86: Apply more __ro_after_init and const
2016-08-10 14:55:05 +02:00
x8664_ksyms_64.c
x86/mce: Improve memcpy_mcsafe()
2016-09-05 11:47:31 +02:00