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ftrace: Rename dup_hash() and comment it

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The name "dup_hash()" is a misnomer as it does not duplicate the hash that
is passed in, but instead moves its entities from that hash to a newly
allocated one. Rename it to "__move_hash()" (using starting underscores as
it is an internal function), and add some comments about what it does.

Link: https://lore.kernel.org/linux-trace-kernel/20240605180408.537723591@goodmis.org

Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
This commit is contained in:
Steven Rostedt (Google) 2024-06-05 14:03:35 -04:00
parent 5efe9688f9
commit 3afd801f42
1 changed files with 6 additions and 2 deletions
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8
kernel/trace/ftrace.c
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@ -1392,7 +1392,11 @@ ftrace_hash_rec_enable_modify(struct ftrace_ops *ops, int filter_hash);
static int ftrace_hash_ipmodify_update(struct ftrace_ops *ops,
struct ftrace_hash *new_hash);
static struct ftrace_hash *dup_hash(struct ftrace_hash *src, int size)
/*
* Allocate a new hash and remove entries from @src and move them to the new hash.
* On success, the @src hash will be empty and should be freed.
*/
static struct ftrace_hash *__move_hash(struct ftrace_hash *src, int size)
{
struct ftrace_func_entry *entry;
struct ftrace_hash *new_hash;
@ -1439,7 +1443,7 @@ __ftrace_hash_move(struct ftrace_hash *src)
if (ftrace_hash_empty(src))
return EMPTY_HASH;
return dup_hash(src, size);
return __move_hash(src, size);
}
static int