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ftrace: Add comments to ftrace_hash_rec_disable/enable()

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Add comments to describe what the functions ftrace_hash_rec_disable() and
ftrace_hash_rec_enable() do. Also change the passing of the "inc" variable
to __ftrace_hash_rec_update() to a boolean value as that is what it is
supposed to take.

Link: https://lore.kernel.org/linux-trace-kernel/20240605180408.857333430@goodmis.org

Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Acked-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
This commit is contained in:
Steven Rostedt (Google) 2024-06-05 14:03:37 -04:00
parent 07bbe0833e
commit da73f6d490
1 changed files with 12 additions and 2 deletions
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14
kernel/trace/ftrace.c
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@ -1863,14 +1863,24 @@ static bool __ftrace_hash_rec_update(struct ftrace_ops *ops,
return update;
}
/*
* This is called when an ops is removed from tracing. It will decrement
* the counters of the dyn_ftrace records for all the functions that
* the @ops attached to.
*/
static bool ftrace_hash_rec_disable(struct ftrace_ops *ops)
{
return __ftrace_hash_rec_update(ops, 0);
return __ftrace_hash_rec_update(ops, false);
}
/*
* This is called when an ops is added to tracing. It will increment
* the counters of the dyn_ftrace records for all the functions that
* the @ops attached to.
*/
static bool ftrace_hash_rec_enable(struct ftrace_ops *ops)
{
return __ftrace_hash_rec_update(ops, 1);
return __ftrace_hash_rec_update(ops, true);
}
static void ftrace_hash_rec_update_modify(struct ftrace_ops *ops, int inc)