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Kim Phillips 5ab1de932e perf arm64: Fix include path for asm-generic/unistd.h 
The new syscall table support for arm64 mistakenly used the system's
asm-generic/unistd.h file when processing the
tools/arch/arm64/include/uapi/asm/unistd.h file's include directive:

	#include <asm-generic/unistd.h>

See "Committer notes" section of commit 2b58824356 "perf arm64:
Generate system call table from asm/unistd.h" for more details.

This patch removes the committer's temporary workaround, and instructs
the host compiler to search the build tree's include path for the right
copy of the unistd.h file, instead of the one on the system's
/usr/include path.

It thus fixes the committer's test that cross-builds an arm64 perf on an
x86 platform running Ubuntu 14.04.5 LTS with an old toolchain:

$ tools/perf/arch/arm64/entry/syscalls/mksyscalltbl /gcc-linaro-5.4.1-2017.05-x86_64_aarch64-linux-gnu/bin/aarch64-linux-gnu-gcc gcc `pwd`/tools tools/arch/arm64/include/uapi/asm/unistd.h | grep bpf
	[280] = "bpf",

Signed-off-by: Kim Phillips <kim.phillips@arm.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Hendrik Brueckner <brueckner@linux.vnet.ibm.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ravi Bangoria <ravi.bangoria@linux.vnet.ibm.com>
Cc: Thomas Richter <tmricht@linux.vnet.ibm.com>
Fixes: 2b58824356 ("perf arm64: Generate system call table from asm/unistd.h")
Link: http://lkml.kernel.org/r/20180806172800.bbcec3cfcc51e2facc978bf2@arm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-08-30 14:49:24 -03:00
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README 

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

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

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.