treewide: Add SPDX license identifier - Kbuild

Add SPDX license identifiers to all Make/Kconfig files which:

- Have no license information of any form

These files fall under the project license,

treewide: Add SPDX license identifier - Kbuild

Add SPDX license identifiers to all Make/Kconfig files which:

- Have no license information of any form

These files fall under the project license, GPL v2 only. The resulting SPDX
license identifier is:

GPL-2.0

Reported-by: Masahiro Yamada <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
Reviewed-by: Kate Stewart <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>

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KVM: export <linux/kvm_para.h> and <asm/kvm_para.h> iif KVM is supported

I do not see any consistency about headers_install of <linux/kvm_para.h>
and <asm/kvm_para.h>.

According to my analysis of L

KVM: export <linux/kvm_para.h> and <asm/kvm_para.h> iif KVM is supported

I do not see any consistency about headers_install of <linux/kvm_para.h>
and <asm/kvm_para.h>.

According to my analysis of Linux 5.1-rc1, there are 3 groups:

[1] Both <linux/kvm_para.h> and <asm/kvm_para.h> are exported

alpha, arm, hexagon, mips, powerpc, s390, sparc, x86

[2] <asm/kvm_para.h> is exported, but <linux/kvm_para.h> is not

arc, arm64, c6x, h8300, ia64, m68k, microblaze, nios2, openrisc,
parisc, sh, unicore32, xtensa

[3] Neither <linux/kvm_para.h> nor <asm/kvm_para.h> is exported

csky, nds32, riscv

This does not match to the actual KVM support. At least, [2] is
half-baked.

Nor do arch maintainers look like they care about this. For example,
commit 0add53713b1c ("microblaze: Add missing kvm_para.h to Kbuild")
exported <asm/kvm_para.h> to user-space in order to fix an in-kernel
build error.

We have two ways to make this consistent:

[A] export both <linux/kvm_para.h> and <asm/kvm_para.h> for all
architectures, irrespective of the KVM support

[B] Match the header export of <linux/kvm_para.h> and <asm/kvm_para.h>
to the KVM support

My first attempt was [A] because the code looks cleaner, but Paolo
suggested [B].

So, this commit goes with [B].

For most architectures, <asm/kvm_para.h> was moved to the kernel-space.
I changed include/uapi/linux/Kbuild so that it checks generated
asm/kvm_para.h as well as check-in ones.

After this commit, there will be two groups:

[1] Both <linux/kvm_para.h> and <asm/kvm_para.h> are exported

arm, arm64, mips, powerpc, s390, x86

[2] Neither <linux/kvm_para.h> nor <asm/kvm_para.h> is exported

alpha, arc, c6x, csky, h8300, hexagon, ia64, m68k, microblaze,
nds32, nios2, openrisc, parisc, riscv, sh, sparc, unicore32, xtensa

Signed-off-by: Masahiro Yamada <[email protected]>
Acked-by: Cornelia Huck <[email protected]>
Signed-off-by: Paolo Bonzini <[email protected]>

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kbuild: force all architectures except um to include mandatory-y

Currently, every arch/*/include/uapi/asm/Kbuild explicitly includes
the common Kbuild.asm file. Factor out the duplicated include dir

kbuild: force all architectures except um to include mandatory-y

Currently, every arch/*/include/uapi/asm/Kbuild explicitly includes
the common Kbuild.asm file. Factor out the duplicated include directives
to scripts/Makefile.asm-generic so that no architecture would opt out
of the mandatory-y mechanism.

um is not forced to include mandatory-y since it is a very exceptional
case which does not support UAPI.

Signed-off-by: Masahiro Yamada <[email protected]>

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kbuild: warn redundant generic-y

The generic-y is redundant under the following condition:

- arch has its own implementation

- the same header is added to generated-y

- the same header is adde

kbuild: warn redundant generic-y

The generic-y is redundant under the following condition:

- arch has its own implementation

- the same header is added to generated-y

- the same header is added to mandatory-y

If a redundant generic-y is found, the warning like follows is displayed:

scripts/Makefile.asm-generic:20: redundant generic-y found in arch/arm/include/asm/Kbuild: timex.h

I fixed up arch Kbuild files found by this.

Suggested-by: Sam Ravnborg <[email protected]>
Signed-off-by: Masahiro Yamada <[email protected]>

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arch: Use asm-generic/socket.h when possible

Many architectures maintain an arch specific copy of the
file even though there are no differences with the asm-generic
one. Allow these architectures to

arch: Use asm-generic/socket.h when possible

Many architectures maintain an arch specific copy of the
file even though there are no differences with the asm-generic
one. Allow these architectures to use the generic one instead.

Signed-off-by: Deepa Dinamani <[email protected]>
Acked-by: Max Filippov <[email protected]>
Acked-by: Heiko Carstens <[email protected]>
Acked-by: Willem de Bruijn <[email protected]>
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Signed-off-by: David S. Miller <[email protected]>

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arch: remove redundant UAPI generic-y defines

Now that Kbuild automatically creates asm-generic wrappers for missing
mandatory headers, it is redundant to list the same headers in
generic-y and mand

arch: remove redundant UAPI generic-y defines

Now that Kbuild automatically creates asm-generic wrappers for missing
mandatory headers, it is redundant to list the same headers in
generic-y and mandatory-y.

Suggested-by: Sam Ravnborg <[email protected]>
Signed-off-by: Masahiro Yamada <[email protected]>
Acked-by: Sam Ravnborg <[email protected]>

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arch: remove stale comments "UAPI Header export list"

These comments are leftovers of commit fcc8487d477a ("uapi: export all
headers under uapi directories").

Prior to that commit, exported headers

arch: remove stale comments "UAPI Header export list"

These comments are leftovers of commit fcc8487d477a ("uapi: export all
headers under uapi directories").

Prior to that commit, exported headers must be explicitly added to
header-y. Now, all headers under the uapi/ directories are exported.

Signed-off-by: Masahiro Yamada <[email protected]>

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xtensa: generate uapi header and syscall table header files

System call table generation script must be run to gener-
ate unistd_32.h and syscall_table.h files. This patch will
have changes which wi

xtensa: generate uapi header and syscall table header files

System call table generation script must be run to gener-
ate unistd_32.h and syscall_table.h files. This patch will
have changes which will invokes the script.

This patch will generate unistd_32.h and syscall_table.h
files by the syscall table generation script invoked by
xtensa/Makefile and the generated files against the removed
files must be identical.

The generated uapi header file will be included in uapi/-
asm/unistd.h and generated system call table header file
will be included by kernel/syscall.c file.

Signed-off-by: Firoz Khan <[email protected]>
Signed-off-by: Max Filippov <[email protected]>

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bpf: correct broken uapi for BPF_PROG_TYPE_PERF_EVENT program type

Commit 0515e5999a466dfe ("bpf: introduce BPF_PROG_TYPE_PERF_EVENT
program type") introduced the bpf_perf_event_data structure which

bpf: correct broken uapi for BPF_PROG_TYPE_PERF_EVENT program type

Commit 0515e5999a466dfe ("bpf: introduce BPF_PROG_TYPE_PERF_EVENT
program type") introduced the bpf_perf_event_data structure which
exports the pt_regs structure. This is OK for multiple architectures
but fail for s390 and arm64 which do not export pt_regs. Programs
using them, for example, the bpf selftest fail to compile on these
architectures.

For s390, exporting the pt_regs is not an option because s390 wants
to allow changes to it. For arm64, there is a user_pt_regs structure
that covers parts of the pt_regs structure for use by user space.

To solve the broken uapi for s390 and arm64, introduce an abstract
type for pt_regs and add an asm/bpf_perf_event.h file that concretes
the type. An asm-generic header file covers the architectures that
export pt_regs today.

The arch-specific enablement for s390 and arm64 follows in separate
commits.

Reported-by: Thomas Richter <[email protected]>
Fixes: 0515e5999a466dfe ("bpf: introduce BPF_PROG_TYPE_PERF_EVENT program type")
Signed-off-by: Hendrik Brueckner <[email protected]>
Reviewed-and-tested-by: Thomas Richter <[email protected]>
Acked-by: Alexei Starovoitov <[email protected]>
Cc: Arnaldo Carvalho de Melo <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: Alexander Shishkin <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Namhyung Kim <[email protected]>
Cc: Arnd Bergmann <[email protected]>
Cc: Daniel Borkmann <[email protected]>
Signed-off-by: Daniel Borkmann <[email protected]>

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xtensa: move generic-y of exported headers to uapi/asm/Kbuild

Since commit fcc8487d477a ("uapi: export all headers under uapi
directories"), all (and only) headers under uapi directories are
exporte

xtensa: move generic-y of exported headers to uapi/asm/Kbuild

Since commit fcc8487d477a ("uapi: export all headers under uapi
directories"), all (and only) headers under uapi directories are
exported, but asm-generic wrappers are still exceptions.

To complete de-coupling the uapi from kernel headers, move generic-y
of exported headers to uapi/asm/Kbuild.

With this change, "make headers_install" will just need to parse
uapi/asm/Kbuild to build up exported headers.

Also, move "generic-y += kprobes.h" up in order to keep the entries
sorted.

Signed-off-by: Masahiro Yamada <[email protected]>

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signal: Remove non-uapi <asm/siginfo.h>

By moving the kernel side __SI_* defintions right next to the userspace
ones we can kill the non-uapi versions of <asm/siginfo.h> include
include/asm-generic/

signal: Remove non-uapi <asm/siginfo.h>

By moving the kernel side __SI_* defintions right next to the userspace
ones we can kill the non-uapi versions of <asm/siginfo.h> include
include/asm-generic/siginfo.h and untangle the unholy mess of includes.

[ tglx: Removed uapi/asm/siginfo.h from m32r, microblaze, mn10300 and score ]

Signed-off-by: Christoph Hellwig <[email protected]>
Signed-off-by: Thomas Gleixner <[email protected]>
Cc: [email protected]
Cc: Fenghua Yu <[email protected]>
Cc: Tony Luck <[email protected]>
Cc: [email protected]
Cc: Arnd Bergmann <[email protected]>
Cc: [email protected]
Cc: "David S. Miller" <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]

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uapi: export all headers under uapi directories

Regularly, when a new header is created in include/uapi/, the developer
forgets to add it in the corresponding Kbuild file. This error is usually
dete

uapi: export all headers under uapi directories

Regularly, when a new header is created in include/uapi/, the developer
forgets to add it in the corresponding Kbuild file. This error is usually
detected after the release is out.

In fact, all headers under uapi directories should be exported, thus it's
useless to have an exhaustive list.

After this patch, the following files, which were not exported, are now
exported (with make headers_install_all):
asm-arc/kvm_para.h
asm-arc/ucontext.h
asm-blackfin/shmparam.h
asm-blackfin/ucontext.h
asm-c6x/shmparam.h
asm-c6x/ucontext.h
asm-cris/kvm_para.h
asm-h8300/shmparam.h
asm-h8300/ucontext.h
asm-hexagon/shmparam.h
asm-m32r/kvm_para.h
asm-m68k/kvm_para.h
asm-m68k/shmparam.h
asm-metag/kvm_para.h
asm-metag/shmparam.h
asm-metag/ucontext.h
asm-mips/hwcap.h
asm-mips/reg.h
asm-mips/ucontext.h
asm-nios2/kvm_para.h
asm-nios2/ucontext.h
asm-openrisc/shmparam.h
asm-parisc/kvm_para.h
asm-powerpc/perf_regs.h
asm-sh/kvm_para.h
asm-sh/ucontext.h
asm-tile/shmparam.h
asm-unicore32/shmparam.h
asm-unicore32/ucontext.h
asm-x86/hwcap2.h
asm-xtensa/kvm_para.h
drm/armada_drm.h
drm/etnaviv_drm.h
drm/vgem_drm.h
linux/aspeed-lpc-ctrl.h
linux/auto_dev-ioctl.h
linux/bcache.h
linux/btrfs_tree.h
linux/can/vxcan.h
linux/cifs/cifs_mount.h
linux/coresight-stm.h
linux/cryptouser.h
linux/fsmap.h
linux/genwqe/genwqe_card.h
linux/hash_info.h
linux/kcm.h
linux/kcov.h
linux/kfd_ioctl.h
linux/lightnvm.h
linux/module.h
linux/nbd-netlink.h
linux/nilfs2_api.h
linux/nilfs2_ondisk.h
linux/nsfs.h
linux/pr.h
linux/qrtr.h
linux/rpmsg.h
linux/sched/types.h
linux/sed-opal.h
linux/smc.h
linux/smc_diag.h
linux/stm.h
linux/switchtec_ioctl.h
linux/vfio_ccw.h
linux/wil6210_uapi.h
rdma/bnxt_re-abi.h

Note that I have removed from this list the files which are generated in every
exported directories (like .install or .install.cmd).

Thanks to Julien Floret <[email protected]> for the tip to get all
subdirs with a pure makefile command.

For the record, note that exported files for asm directories are a mix of
files listed by:
- include/uapi/asm-generic/Kbuild.asm;
- arch/<arch>/include/uapi/asm/Kbuild;
- arch/<arch>/include/asm/Kbuild.

Signed-off-by: Nicolas Dichtel <[email protected]>
Acked-by: Daniel Vetter <[email protected]>
Acked-by: Russell King <[email protected]>
Acked-by: Mark Salter <[email protected]>
Acked-by: Michael Ellerman <[email protected]> (powerpc)
Signed-off-by: Masahiro Yamada <[email protected]>

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xtensa: Use Kbuild infrastructure to handle asm-generic headers

Use Kbuild infrastructure to handle the asm-generic headers
and remove the wrapper headers that call them.

This only affects headers

xtensa: Use Kbuild infrastructure to handle asm-generic headers

Use Kbuild infrastructure to handle the asm-generic headers
and remove the wrapper headers that call them.

This only affects headers that do nothing but include the generic
equivalent. It does not touch any header that does a little more.

Signed-off-by: Steven Rostedt <[email protected]>
Signed-off-by: Max Filippov <[email protected]>
Signed-off-by: Chris Zankel <[email protected]>

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UAPI: (Scripted) Disintegrate arch/xtensa/include/asm

UAPI: (Scripted) Disintegrate arch/xtensa/include/asm

Signed-off-by: David Howells <[email protected]>
Acked-by: Arnd Bergmann <[email protected]

UAPI: (Scripted) Disintegrate arch/xtensa/include/asm

UAPI: (Scripted) Disintegrate arch/xtensa/include/asm

Signed-off-by: David Howells <[email protected]>
Acked-by: Arnd Bergmann <[email protected]>
Acked-by: Thomas Gleixner <[email protected]>
Acked-by: Michael Kerrisk <[email protected]>
Acked-by: Paul E. McKenney <[email protected]>
Acked-by: Dave Jones <[email protected]>
Signed-off-by: Max Filippov <[email protected]>
Signed-off-by: Chris Zankel <[email protected]>

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UAPI: (Scripted) Set up UAPI Kbuild files

Set up empty UAPI Kbuild files to be populated by the header splitter.

Signed-off-by: David Howells <[email protected]>
Acked-by: Arnd Bergmann <arnd@arn

UAPI: (Scripted) Set up UAPI Kbuild files

Set up empty UAPI Kbuild files to be populated by the header splitter.

Signed-off-by: David Howells <[email protected]>
Acked-by: Arnd Bergmann <[email protected]>
Acked-by: Thomas Gleixner <[email protected]>
Acked-by: Paul E. McKenney <[email protected]>
Acked-by: Dave Jones <[email protected]>

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