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<title>user/sven/linux.git/include/uapi/linux/hw_breakpoint.h, branch v4.9.296</title>
<subtitle>Linux Kernel
</subtitle>
<id>https://git.stealer.net/cgit.cgi/user/sven/linux.git/atom?h=v4.9.296</id>
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<updated>2012-11-19T22:21:03Z</updated>
<entry>
<title>perf: Make perf build for x86 with UAPI disintegration applied</title>
<updated>2012-11-19T22:21:03Z</updated>
<author>
<name>David Howells</name>
<email>dhowells@redhat.com</email>
</author>
<published>2012-11-19T22:21:03Z</published>
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<id>urn:sha1:d2709c7ce4c513ab7f4ca9a106a930621811f2d3</id>
<content type='text'>
Make perf build for x86 once the UAPI disintegration patches for that arch
have been applied by adding the appropriate -I flags - in the right order -
and then converting some #includes that use ../.. notation to find main kernel
headerfiles to use &lt;asm/foo.h&gt; and &lt;linux/foo.h&gt; instead.

Note that -Iarch/foo/include/uapi is present _before_ -Iarch/foo/include.
This makes sure we get the userspace version of the pt_regs struct.  Ideally,
we wouldn't have the latter -I flag at all, but unfortunately we want
asm/svm.h and asm/vmx.h in builtin-kvm.c and these aren't part of the UAPI -
at least not for x86.  I wonder if the bits outside of the __KERNEL__ guards
*should* be transferred there.

I note also that perf seems to do its dependency handling manually by listing
all the header files it might want to use in LIB_H in the Makefile.  Can this
be changed to use -MD?

Note that to do make this work, we need to export and UAPI disintegrate
linux/hw_breakpoint.h, which I think should've been exported previously so that
perf can access the bits.  We have to do this in the same patch to maintain
bisectability.

Signed-off-by: David Howells &lt;dhowells@redhat.com&gt;</content>
</entry>
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