linux-toradex.git/include/asm-generic, branch toradex_4.19.y-rt

Merge tag 'v4.19.59' into v4.19-rt

2019-07-19T16:40:22+00:00

This is the 4.19.59 stable release

futex: Update comments and docs about return values of arch futex code

2019-07-03T11:14:49+00:00

commit 427503519739e779c0db8afe876c1b33f3ac60ae upstream.

The architecture implementations of 'arch_futex_atomic_op_inuser()' and
'futex_atomic_cmpxchg_inatomic()' are permitted to return only -EFAULT,
-EAGAIN or -ENOSYS in the case of failure.

Update the comments in the asm-generic/ implementation and also a stray
reference in the robust futex documentation.

Signed-off-by: Will Deacon 
Signed-off-by: Greg Kroah-Hartman

Merge tag 'v4.19.31' into v4.19-rt

2019-03-27T12:58:54+00:00

This is the 4.19.31 stable release

 Conflicts:
	mm/swap.c

x86/unwind/orc: Fix ORC unwind table alignment

2019-03-23T19:10:10+00:00

commit f76a16adc485699f95bb71fce114f97c832fe664 upstream.

The .orc_unwind section is a packed array of 6-byte structs.  It's
currently aligned to 6 bytes, which is causing warnings in the LLD
linker.

Six isn't a power of two, so it's not a valid alignment value.  The
actual alignment doesn't matter much because it's an array of packed
structs.  An alignment of two is sufficient.  In reality it always gets
aligned to four bytes because it comes immediately after the
4-byte-aligned .orc_unwind_ip section.

Fixes: ee9f8fce9964 ("x86/unwind: Add the ORC unwinder")
Reported-by: Nick Desaulniers 
Reported-by: Dmitry Golovin 
Reported-by: Sedat Dilek 
Signed-off-by: Josh Poimboeuf 
Signed-off-by: Thomas Gleixner 
Tested-by: Sedat Dilek 
Cc: Peter Zijlstra 
Cc: stable@vger.kernel.org
Link: https://github.com/ClangBuiltLinux/linux/issues/218
Link: https://lkml.kernel.org/r/d55027ee95fe73e952dcd8be90aebd31b0095c45.1551892041.git.jpoimboe@redhat.com
Signed-off-by: Greg Kroah-Hartman

Merge tag 'v4.19.13' into linux-4.19.y-rt

2019-01-07T17:18:27+00:00

This is the 4.19.13 stable release

Signed-off-by: Sebastian Andrzej Siewior

mm: introduce mm_[p4d|pud|pmd]_folded

2018-12-29T12:37:58+00:00

[ Upstream commit 1071fc5779d9846fec56a4ff6089ab08cac1ab72 ]

Add three architecture overrideable functions to test if the
p4d, pud, or pmd layer of a page table is folded or not.

Acked-by: Kirill A. Shutemov 
Signed-off-by: Martin Schwidefsky 
Signed-off-by: Sasha Levin

mm: make the __PAGETABLE_PxD_FOLDED defines non-empty

2018-12-29T12:37:57+00:00

[ Upstream commit a8874e7e8a8896f2b6c641f4b8e2473eafd35204 ]

Change the currently empty defines for __PAGETABLE_PMD_FOLDED,
__PAGETABLE_PUD_FOLDED and __PAGETABLE_P4D_FOLDED to return 1.
This makes it possible to use __is_defined() to test if the
preprocessor define exists.

Acked-by: Kirill A. Shutemov 
Signed-off-by: Martin Schwidefsky 
Signed-off-by: Sasha Levin

percpu: include irqflags.h for raw_local_irq_save()

2018-10-29T17:19:17+00:00

The header percpu.h header file is using raw_local_irq_save() but does
not include irqflags.h for its definition. It compiles because the
header file is included via an other header file.
On -RT the build fails because raw_local_irq_save() is not defined.

Include irqflags.h in percpu.h.

Signed-off-by: Sebastian Andrzej Siewior

vmlinux.lds.h: Fix linker warnings about orphan .LPBX sections

2018-10-11T21:55:29+00:00

Enabling both CONFIG_LD_DEAD_CODE_DATA_ELIMINATION=y and
CONFIG_GCOV_PROFILE_ALL=y results in linker warnings:

  warning: orphan section `.data..LPBX1' being placed in
  section `.data..LPBX1'.

LD_DEAD_CODE_DATA_ELIMINATION adds compiler flag -fdata-sections. This
option causes GCC to create separate data sections for data objects,
including those generated by GCC internally for gcov profiling. The
names of these objects start with a dot (.LPBX0, .LPBX1), resulting in
section names starting with 'data..'.

As section names starting with 'data..' are used for specific purposes
in the Linux kernel, the linker script does not automatically include
them in the output data section, resulting in the "orphan section"
linker warnings.

Fix this by specifically including sections named "data..LPBX*" in the
data section.

Reported-by: Stephen Rothwell 
Tested-by: Stephen Rothwell 
Tested-by: Arnd Bergmann 
Acked-by: Arnd Bergmann 
Signed-off-by: Peter Oberparleiter 
Signed-off-by: Stephen Rothwell

vmlinux.lds.h: Fix incomplete .text.exit discards

2018-10-11T21:54:58+00:00

Enabling CONFIG_GCOV_PROFILE_ALL=y causes linker errors on ARM:

  `.text.exit' referenced in section `.ARM.exidx.text.exit':
  defined in discarded section `.text.exit'

  `.text.exit' referenced in section `.fini_array.00100':
  defined in discarded section `.text.exit'

And related errors on NDS32:

  `.text.exit' referenced in section `.dtors.65435':
  defined in discarded section `.text.exit'

The gcov compiler flags cause certain compiler versions to generate
additional destructor-related sections that are not yet handled by the
linker script, resulting in references between discarded and
non-discarded sections.

Since destructors are not used in the Linux kernel, fix this by
discarding these additional sections.

Reported-by: Arnd Bergmann 
Tested-by: Arnd Bergmann 
Acked-by: Arnd Bergmann 
Reported-by: Greentime Hu 
Tested-by: Masami Hiramatsu 
Signed-off-by: Peter Oberparleiter 
Signed-off-by: Stephen Rothwell