tracing: Remove pid in task_rename tracing output

Remove pid in task_rename tracepoint output, since that tracepoint only
deals with the current task, and is printed by default. This also saves
some space in the entry and avoids wasted padding.

Link: https://lkml.kernel.org/r/20241105120247.596a0dc9@gandalf.local.home
Suggested-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Marco Elver <elver@google.com>
Link: https://lore.kernel.org/r/20241108113455.2924361-2-elver@google.com
Signed-off-by: Kees Cook <kees@kernel.org>

diff --git a/include/trace/events/task.h b/include/trace/events/task.h
index 209d315852fba176895d8a886f253c4383842a31..af535b053033042bd976170b170c56e235ad58b4 100644 (file)
--- a/include/trace/events/task.h
+++ b/include/trace/events/task.h
@@ -38,22 +38,19 @@ TRACE_EVENT(task_rename,
        TP_ARGS(task, comm),
 
        TP_STRUCT__entry(
-               __field(        pid_t,  pid)
                __array(        char, oldcomm,  TASK_COMM_LEN)
                __array(        char, newcomm,  TASK_COMM_LEN)
                __field(        short,  oom_score_adj)
        ),
 
        TP_fast_assign(
-               __entry->pid = task->pid;
                memcpy(entry->oldcomm, task->comm, TASK_COMM_LEN);
                strscpy(entry->newcomm, comm, TASK_COMM_LEN);
                __entry->oom_score_adj = task->signal->oom_score_adj;
        ),
 
-       TP_printk("pid=%d oldcomm=%s newcomm=%s oom_score_adj=%hd",
-               __entry->pid, __entry->oldcomm,
-               __entry->newcomm, __entry->oom_score_adj)
+       TP_printk("oldcomm=%s newcomm=%s oom_score_adj=%hd",
+                 __entry->oldcomm, __entry->newcomm, __entry->oom_score_adj)
 );
 
 /**