[PATCH 0/9] powerpc: delete duplicated words

[Joe Perches]

On Sun, 2020-07-26 at 12:08 -0700, Randy Dunlap wrote:

> v0.1 of this script also found lots of repeated numbers and strings of
> special characters (ASCII art etc.), so now it ignores duplicated numbers
> or special characters -- since it is really looking for duplicate words.
> 
> Anyway, I might as well attach it. It's no big deal.
> And if someone else wants to tackle using it, go for it.

This might be a reasonable thing to add to checkpatch.

And here's another possible similar perl word deduplicator attached:

Assuming you have git, this could be used like:

$ git ls-files -- <dir> | xargs perl deduplicate_words.pl

And it would overwrite all files with duplicated words.

No guarantees any changes it makes are right of course.
It still needs a human to verify any change.

For instance:

$ git ls-files kernel/trace/*.[ch] | xargs perl deduplicate_words.pl
$ git diff kernel/trace
 kernel/trace/ftrace.c             | 2 +-
 kernel/trace/trace.c              | 2 +-
 kernel/trace/trace_dynevent.c     | 2 +-
 kernel/trace/trace_events_synth.c | 2 +-
 kernel/trace/tracing_map.c        | 2 +-
 5 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c
index a3093a84bae3..b7f085a4f71a 100644
--- a/kernel/trace/ftrace.c
+++ b/kernel/trace/ftrace.c
@@ -2405,7 +2405,7 @@ struct ftrace_ops direct_ops = {
  *
  * If the record has the FTRACE_FL_REGS set, that means that it
  * wants to convert to a callback that saves all regs. If FTRACE_FL_REGS
- * is not not set, then it wants to convert to the normal callback.
+ * is not set, then it wants to convert to the normal callback.
  *
  * Returns the address of the trampoline to set to
  */
diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
index 5aa5c01e2fed..4d3dcfb06d6d 100644
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -9253,7 +9253,7 @@ void ftrace_dump(enum ftrace_dump_mode oops_dump_mode)
 
 	/*
 	 * We need to stop all tracing on all CPUS to read the
-	 * the next buffer. This is a bit expensive, but is
+	 * next buffer. This is a bit expensive, but is
 	 * not done often. We fill all what we can read,
 	 * and then release the locks again.
 	 */
diff --git a/kernel/trace/trace_dynevent.c b/kernel/trace/trace_dynevent.c
index 2c435fdef565..8c1e7e168505 100644
--- a/kernel/trace/trace_dynevent.c
+++ b/kernel/trace/trace_dynevent.c
@@ -402,7 +402,7 @@ void dynevent_arg_init(struct dynevent_arg *arg,
  * whitespace, all followed by a separator, if applicable.  After the
  * first arg string is successfully appended to the command string,
  * the optional @operator is appended, followed by the second arg and
- * and optional @separator.  If no separator was specified when
+ * optional @separator.  If no separator was specified when
  * initializing the arg, a space will be appended.
  */
 void dynevent_arg_pair_init(struct dynevent_arg_pair *arg_pair,
diff --git a/kernel/trace/trace_events_synth.c b/kernel/trace/trace_events_synth.c
index e2a623f2136c..3801d3088744 100644
--- a/kernel/trace/trace_events_synth.c
+++ b/kernel/trace/trace_events_synth.c
@@ -1211,7 +1211,7 @@ __synth_event_trace_start(struct trace_event_file *file,
 	 * ENABLED bit is set (which attaches the probe thus allowing
 	 * this code to be called, etc).  Because this is called
 	 * directly by the user, we don't have that but we still need
-	 * to honor not logging when disabled.  For the the iterated
+	 * to honor not logging when disabled.  For the iterated
 	 * trace case, we save the enabed state upon start and just
 	 * ignore the following data calls.
 	 */
diff --git a/kernel/trace/tracing_map.c b/kernel/trace/tracing_map.c
index 74738c9856f1..4b50fc0cb12c 100644
--- a/kernel/trace/tracing_map.c
+++ b/kernel/trace/tracing_map.c
@@ -260,7 +260,7 @@ int tracing_map_add_var(struct tracing_map *map)
  * to use cmp_fn.
  *
  * A key can be a subset of a compound key; for that purpose, the
- * offset param is used to describe where within the the compound key
+ * offset param is used to describe where within the compound key
  * the key referenced by this key field resides.
  *
  * Return: The index identifying the field in the map and associated

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