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Hendrik Brueckner c682ccc496 bpf: fix broken BPF selftest build on s390 
With 720f228e8d ("bpf: fix broken BPF selftest build") the
inclusion of arch-specific header files changed.  Including the
asm/bpf_perf_event.h on s390, correctly includes the s390 specific
header file.  This header file tries then to include the s390
asm/ptrace.h and the build fails with:

cc -Wall -O2 -I../../../include/uapi -I../../../lib -I../../../../include/generated  -I../../../include    test_verifier.c
+/root/git/linux/tools/testing/selftests/bpf/libbpf.a /root/git/linux/tools/testing/selftests/bpf/cgroup_helpers.c -lcap -lelf -o
+/root/git/linux/tools/testing/selftests/bpf/test_verifier
In file included from ../../../include/uapi/asm/bpf_perf_event.h:4:0,
                 from ../../../include/uapi/linux/bpf_perf_event.h:11,
                 from test_verifier.c:29:
../../../include/uapi/../../arch/s390/include/uapi/asm/bpf_perf_event.h:7:9: error: unknown type name 'user_pt_regs'
 typedef user_pt_regs bpf_user_pt_regs_t;
         ^~~~~~~~~~~~
make: *** [../lib.mk:109: /root/git/linux/tools/testing/selftests/bpf/test_verifier] Error 1

This is caused by a recent update to the s390 asm/ptrace.h file
that is not (yet) available in the local installation.  That means,
the s390 asm/ptrace.h must be included from the tools/arch/s390
directory.

Because there is no proper framework to deal with asm specific
includes in tools/, slightly modify the s390 asm/bpf_perf_event.h
to include the local ptrace.h header file.

See also discussion on
https://marc.info/?l=linux-s390&m=151359424420691&w=2

Please note that this needs to be preserved until tools/ is able to
correctly handle asm specific headers.

References: https://marc.info/?l=linux-s390&m=151359424420691&w=2
Fixes: 720f228e8d ("bpf: fix broken BPF selftest build")
Signed-off-by: Hendrik Brueckner <brueckner@linux.vnet.ibm.com>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Cc: Hendrik Brueckner <brueckner@linux.vnet.ibm.com>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
 		2017-12-19 01:19:30 +01:00
Documentation Merge branch 'overlayfs-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs 2017-12-15 12:46:48 -08:00
arch Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf 2017-12-18 10:49:22 -05:00
block Merge branch 'for-linus' of git://git.kernel.dk/linux-block 2017-12-01 08:05:45 -05:00
certs License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
crypto Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 2017-12-11 16:32:45 -08:00
drivers net: phy: xgene: disable clk on error paths 2017-12-18 15:09:42 -05:00
firmware kbuild: remove all dummy assignments to obj- 2017-11-18 11:46:06 +09:00
fs NFS client fixes for Linux 4.15-rc4 2017-12-16 13:12:53 -08:00
include Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-12-15 13:08:37 -08:00
init main: kernel_start: move housekeeping_init() before workqueue_init_early() 2017-11-27 08:56:57 -08:00
ipc Rename superblock flags (MS_xyz -> SB_xyz) 2017-11-27 13:05:09 -08:00
kernel Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf 2017-12-18 10:49:22 -05:00
lib Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf 2017-12-18 10:49:22 -05:00
mm Revert "mm: replace p??_write with pte_access_permitted in fault + gup paths" 2017-12-15 18:53:22 -08:00
net net: bridge: fix early call to br_stp_change_bridge_id and plug newlink leaks 2017-12-18 13:29:01 -05:00
samples Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf 2017-12-03 13:08:30 -05:00
scripts Merge branch 'locking-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2017-12-15 11:44:59 -08:00
security KEYS: reject NULL restriction string when type is specified 2017-12-08 15:13:29 +00:00
sound sound fixes for 4.15-rc3 2017-12-06 10:49:14 -08:00
tools bpf: fix broken BPF selftest build on s390 2017-12-19 01:19:30 +01:00
usr initramfs: fix initramfs rebuilds w/ compression after disabling 2017-11-03 07:39:19 -07:00
virt KVM: x86: fix APIC page invalidation 2017-12-06 16:10:34 +01:00
.cocciconfig scripts: add Linux .cocciconfig for coccinelle 2016-07-22 12:13:39 +02:00
.get_maintainer.ignore Add hch to .get_maintainer.ignore 2015-08-21 14:30:10 -07:00
.gitattributes .gitattributes: set git diff driver for C source code files 2016-10-07 18:46:30 -07:00
.gitignore Kbuild misc updates for v4.15 2017-11-17 17:51:33 -08:00
.mailmap Add Jason Gunthorpe as co-maintainer of the RDMA stack 2017-11-17 09:36:18 -08:00
COPYING
…
CREDITS MAINTAINERS: update TPM driver infrastructure changes 2017-11-09 17:58:40 -08:00
Kbuild Kbuild updates for v4.15 2017-11-17 17:45:29 -08:00
Kconfig License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
MAINTAINERS Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-12-15 13:08:37 -08:00
Makefile Linux 4.15-rc3 2017-12-10 17:56:26 -08:00
README README: add a new README file, pointing to the Documentation/ 2016-10-24 08:12:35 -02:00

README 

Linux kernel
============

This file was moved to Documentation/admin-guide/README.rst

Please notice that there are several guides for kernel developers and users.
These guides can be rendered in a number of formats, like HTML and PDF.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
See Documentation/00-INDEX for a list of what is contained in each file.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.