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Improve sparse documentation

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Add documentation of -DCONFIG_SPARSE_RCU_POINTER.
I started to add documentation of -D__CHECK_ENDIAN__ as well, but
discovered I'm too late; that's now enabled by default.

Signed-off-by: Matthew Wilcox <mawilcox@microsoft.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
This commit is contained in:
Matthew Wilcox 2017-02-13 11:16:02 -08:00 committed by Jonathan Corbet
parent c33dea1eda
commit 291b9d7368
1 changed files with 6 additions and 0 deletions
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Documentation/dev-tools/sparse.rst
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@ -103,3 +103,9 @@ have already built it.
The optional make variable CF can be used to pass arguments to sparse. The The optional make variable CF can be used to pass arguments to sparse. The
build system passes -Wbitwise to sparse automatically. build system passes -Wbitwise to sparse automatically.
Checking RCU annotations
~~~~~~~~~~~~~~~~~~~~~~~~
RCU annotations are not checked by default. To enable RCU annotation
checks, include -DCONFIG_SPARSE_RCU_POINTER in your CF flags.