Documentation: Coccinelle: fix various typos etc.
Fix various typos etc. in dev-tools/coccinelle.rst: - punctuation, grammar, wording Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Acked-by: Julia Lawall <julia.lawall@inria.fr> Link: https://lore.kernel.org/r/def28907-18b9-5b7a-e743-79b0418c946c@infradead.org Signed-off-by: Jonathan Corbet <corbet@lwn.net>
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Randy Dunlap
Jonathan Corbet
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@ -85,7 +85,7 @@ Four basic modes are defined: ``patch``, ``report``, ``context``, and
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file:line:column-column: message
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- ``context`` highlights lines of interest and their context in a
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diff-like style.Lines of interest are indicated with ``-``.
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diff-like style. Lines of interest are indicated with ``-``.
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- ``org`` generates a report in the Org mode format of Emacs.
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@ -119,7 +119,7 @@ For each semantic patch, a commit message is proposed. It gives a
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description of the problem being checked by the semantic patch, and
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includes a reference to Coccinelle.
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As any static code analyzer, Coccinelle produces false
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As with any static code analyzer, Coccinelle produces false
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positives. Thus, reports must be carefully checked, and patches
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reviewed.
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@ -135,18 +135,18 @@ the parallelism, set the J= variable. For example, to run across 4 CPUs::
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make coccicheck MODE=report J=4
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As of Coccinelle 1.0.2 Coccinelle uses Ocaml parmap for parallelization,
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As of Coccinelle 1.0.2 Coccinelle uses Ocaml parmap for parallelization;
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if support for this is detected you will benefit from parmap parallelization.
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When parmap is enabled coccicheck will enable dynamic load balancing by using
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``--chunksize 1`` argument, this ensures we keep feeding threads with work
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``--chunksize 1`` argument. This ensures we keep feeding threads with work
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one by one, so that we avoid the situation where most work gets done by only
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a few threads. With dynamic load balancing, if a thread finishes early we keep
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feeding it more work.
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When parmap is enabled, if an error occurs in Coccinelle, this error
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value is propagated back, the return value of the ``make coccicheck``
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captures this return value.
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value is propagated back, and the return value of the ``make coccicheck``
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command captures this return value.
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Using Coccinelle with a single semantic patch
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---------------------------------------------
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@ -183,7 +183,7 @@ To check only newly edited code, use the value 2 for the C flag, i.e.::
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make C=2 CHECK="scripts/coccicheck"
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In these modes, which works on a file basis, there is no information
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In these modes, which work on a file basis, there is no information
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about semantic patches displayed, and no commit message proposed.
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This runs every semantic patch in scripts/coccinelle by default. The
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@ -198,12 +198,12 @@ Debugging Coccinelle SmPL patches
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Using coccicheck is best as it provides in the spatch command line
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include options matching the options used when we compile the kernel.
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You can learn what these options are by using V=1, you could then
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You can learn what these options are by using V=1; you could then
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manually run Coccinelle with debug options added.
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Alternatively you can debug running Coccinelle against SmPL patches
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by asking for stderr to be redirected to stderr, by default stderr
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is redirected to /dev/null, if you'd like to capture stderr you
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by asking for stderr to be redirected to stderr. By default stderr
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is redirected to /dev/null; if you'd like to capture stderr you
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can specify the ``DEBUG_FILE="file.txt"`` option to coccicheck. For
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instance::
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@ -211,8 +211,8 @@ instance::
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make coccicheck COCCI=scripts/coccinelle/free/kfree.cocci MODE=report DEBUG_FILE=cocci.err
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cat cocci.err
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You can use SPFLAGS to add debugging flags, for instance you may want to
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add both --profile --show-trying to SPFLAGS when debugging. For instance
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You can use SPFLAGS to add debugging flags; for instance you may want to
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add both --profile --show-trying to SPFLAGS when debugging. For example
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you may want to use::
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rm -f err.log
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@ -229,7 +229,7 @@ DEBUG_FILE support is only supported when using coccinelle >= 1.0.2.
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--------------------
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Coccinelle supports reading .cocciconfig for default Coccinelle options that
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should be used every time spatch is spawned, the order of precedence for
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should be used every time spatch is spawned. The order of precedence for
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variables for .cocciconfig is as follows:
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- Your current user's home directory is processed first
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@ -237,7 +237,7 @@ variables for .cocciconfig is as follows:
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- The directory provided with the --dir option is processed last, if used
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Since coccicheck runs through make, it naturally runs from the kernel
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proper dir, as such the second rule above would be implied for picking up a
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proper dir; as such the second rule above would be implied for picking up a
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.cocciconfig when using ``make coccicheck``.
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``make coccicheck`` also supports using M= targets. If you do not supply
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@ -260,13 +260,13 @@ If not using the kernel's coccicheck target, keep the above precedence
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order logic of .cocciconfig reading. If using the kernel's coccicheck target,
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override any of the kernel's .coccicheck's settings using SPFLAGS.
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We help Coccinelle when used against Linux with a set of sensible defaults
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We help Coccinelle when used against Linux with a set of sensible default
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options for Linux with our own Linux .cocciconfig. This hints to coccinelle
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git can be used for ``git grep`` queries over coccigrep. A timeout of 200
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that git can be used for ``git grep`` queries over coccigrep. A timeout of 200
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seconds should suffice for now.
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The options picked up by coccinelle when reading a .cocciconfig do not appear
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as arguments to spatch processes running on your system, to confirm what
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as arguments to spatch processes running on your system. To confirm what
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options will be used by Coccinelle run::
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spatch --print-options-only
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@ -290,7 +290,7 @@ given to it when options are in conflict. ::
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Coccinelle supports idutils as well but requires coccinelle >= 1.0.6.
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When no ID file is specified coccinelle assumes your ID database file
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is in the file .id-utils.index on the top level of the kernel, coccinelle
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is in the file .id-utils.index on the top level of the kernel. Coccinelle
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carries a script scripts/idutils_index.sh which creates the database with::
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mkid -i C --output .id-utils.index
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@ -317,7 +317,7 @@ SmPL patch specific options
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---------------------------
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SmPL patches can have their own requirements for options passed
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to Coccinelle. SmPL patch specific options can be provided by
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to Coccinelle. SmPL patch-specific options can be provided by
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providing them at the top of the SmPL patch, for instance::
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// Options: --no-includes --include-headers
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@ -327,7 +327,7 @@ SmPL patch Coccinelle requirements
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As Coccinelle features get added some more advanced SmPL patches
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may require newer versions of Coccinelle. If an SmPL patch requires
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at least a version of Coccinelle, this can be specified as follows,
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a minimum version of Coccinelle, this can be specified as follows,
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as an example if requiring at least Coccinelle >= 1.0.5::
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// Requires: 1.0.5
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