linux.git/tools/include/linux/compiler.h, branch v4.9.158

tools include: Adopt __same_type() and __must_be_array() from the kernel

2018-06-05T08:28:56+00:00

commit f6441aff8946f7fd6ab730d7eb9eba18a9ebeba4 upstream.

Will be used to adopt the more stringent version of ARRAY_SIZE(), the
one in the kernel sources.

Cc: Adrian Hunter 
Cc: David Ahern 
Cc: Jiri Olsa 
Cc: Namhyung Kim 
Cc: Wang Nan 
Link: http://lkml.kernel.org/n/tip-d85dpvay1hoqscpezlntyd8x@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo 
Signed-off-by: Greg Kroah-Hartman

tools include: Adopt __compiletime_error

2018-06-05T08:28:56+00:00

commit 4900653829175f60356efc279695bb23c59483c3 upstream.

From the kernel, get the gcc one and provide the fallback so that we can
continue build with other compilers, such as with clang.

Will be used by tools/arch/x86/include/asm/cmpxchg.h.

Cc: Adrian Hunter 
Cc: David Ahern 
Cc: Elena Reshetova 
Cc: Jiri Olsa 
Cc: Namhyung Kim 
Cc: Wang Nan 
Link: http://lkml.kernel.org/n/tip-pecgz6efai4a9euuk4rxuotr@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo 
Signed-off-by: Greg Kroah-Hartman

radix tree test suite: Remove types.h

2018-06-05T08:28:56+00:00

commit 12ea65390bd5a46f8a70f068eb0d48922576a781 upstream.

Move the pieces we still need to tools/include and update a few implicit
includes.

Signed-off-by: Matthew Wilcox 
[ Just take the tools/include/linux/* portions of this patch - gregkh]
Signed-off-by: Greg Kroah-Hartman

tools include: Introduce linux/compiler-gcc.h

2018-06-05T08:28:56+00:00

commit 192614010a5052fe92611c7076ef664fd9bb60e8 upstream.

To match the kernel headers structure, setting up things that are
specific to gcc or to some specific version of gcc.

It gets included by linux/compiler.h when gcc is the compiler being
used.

Cc: Adrian Hunter 
Cc: David Ahern 
Cc: Jiri Olsa 
Cc: Joe Perches 
Cc: Namhyung Kim 
Cc: Wang Nan 
Link: http://lkml.kernel.org/n/tip-fabcqfq4asodq9t158hcs8t3@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo 
Signed-off-by: Greg Kroah-Hartman

tools include: Add a __fallthrough statement

2017-07-15T10:16:12+00:00

commit b5bf1733d6a391c4e90ea8f8468d83023be74a2a upstream.

For cases where implicit fall through case labels are intended,
to let us inform that to gcc >= 7:

    CC       /tmp/build/perf/util/string.o
  util/string.c: In function 'perf_atoll':
  util/string.c:22:7: error: this statement may fall through [-Werror=implicit-fallthrough=]
      if (*p)
         ^
  util/string.c:24:3: note: here
     case '\0':
     ^~~~

So we introduce:

  #define __fallthrough __attribute__ ((fallthrough))

And use it in such cases.

Cc: Adrian Hunter 
Cc: David Ahern 
Cc: Jiri Olsa 
Cc: Namhyung Kim 
Cc: Wang Nan 
Cc: William Cohen 
Link: http://lkml.kernel.org/n/tip-qnpig0xfop4hwv6k4mv1wts5@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo 
Signed-off-by: Greg Kroah-Hartman

tools: Make "__always_inline" just "inline" on Android

2016-07-14T15:03:04+00:00

As the gcc there is producing tons of:

  "warning: always_inline function might not be inlinable"

At least on android-ndk-r12/platforms/android-24/arch-arm, so, for the
time being, use this big hammer.

Cc: Adrian Hunter 
Cc: Chris Phlipot 
Cc: David Ahern 
Cc: Jiri Olsa 
Cc: Namhyung Kim 
Cc: Wang Nan 
Link: http://lkml.kernel.org/n/tip-97l3eg3fnk5shmo4rsyyvj2t@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo

tools include: Fix strict-aliasing rules breakage

2015-10-13T14:43:16+00:00

Vinson reported build breakage with gcc 4.4 due to strict-aliasing.

   CC       util/annotate.o
 cc1: warnings being treated as errors
 util/annotate.c: In function ‘disasm__purge’:
 linux-next/tools/include/linux/compiler.h:66: error: dereferencing
 pointer ‘res.41’ does break strict-aliasing rules

The reason is READ_ONCE/WRITE_ONCE code we took from kernel sources.  They
intentionaly break aliasing rules. While this is ok for kernel because it's
built with -fno-strict-aliasing, it breaks perf which is build with
-Wstrict-aliasing=3.

Using extra __may_alias__ type to allow aliasing in this case.

Reported-and-tested-by: Vinson Lee 
Signed-off-by: Jiri Olsa 
Cc: Adrian Hunter 
Cc: Andi Kleen 
Cc: Martin Liska 
Cc: Peter Zijlstra 
Cc: Rabin Vincent 
Cc: linux-next@vger.kernel.org
Link: http://lkml.kernel.org/r/20151013085214.GB2705@krava.brq.redhat.com
Signed-off-by: Arnaldo Carvalho de Melo

tools: Adopt {READ,WRITE_ONCE} from the kernel

2015-07-05T18:05:00+00:00

We need it to build rbtree.c after this cset:

  commit d72da4a4d973
  Author: Peter Zijlstra 
  Date:   Wed May 27 11:09:36 2015 +0930

    rbtree: Make lockless searches non-fatal

Cc: Adrian Hunter 
Cc: Borislav Petkov 
Cc: David Ahern 
Cc: Frederic Weisbecker 
Cc: Jiri Olsa 
Cc: Namhyung Kim 
Cc: Peter Zijlstra 
Cc: Stephane Eranian 
Link: http://lkml.kernel.org/n/tip-qlnzhezv5ddwst0w9fydju0y@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo

perf tools: Move barrier() definition to tools/include/linux/compiler.h

2015-05-08T19:05:04+00:00

To make it generally accessible by other tools/ projects, also will be
used in the tools/arch/*/include/asm/barrier.h files that are being
introduced now.

Cc: Adrian Hunter 
Cc: Borislav Petkov 
Cc: David Ahern 
Cc: Don Zickus 
Cc: Frederic Weisbecker 
Cc: Jiri Olsa 
Cc: Namhyung Kim 
Cc: Stephane Eranian 
Link: http://lkml.kernel.org/n/tip-qnjdqwu3vcnt14vqmr6wu788@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo

perf tools: Move ACCESS_ONCE from perf.h header

2014-05-05T15:49:07+00:00

Into tools/include/linux/compiler.h header.

Acked-by: Arnaldo Carvalho de Melo 
Acked-by: Peter Zijlstra 
Cc: Arnaldo Carvalho de Melo 
Cc: Corey Ashford 
Cc: Borislav Petkov 
Cc: David Ahern 
Cc: Frederic Weisbecker 
Cc: Ingo Molnar 
Cc: Namhyung Kim 
Cc: Paul Mackerras 
Cc: Peter Zijlstra 
Link: http://lkml.kernel.org/n/tip-9sk90owm370kuq3f0ssjjui2@git.kernel.org
Signed-off-by: Jiri Olsa