linux-kernel - [PATCH] tracing: Make hash-ptr option default

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Message-ID: <20210212162414.76926502@gandalf.local.home>
Date:   Fri, 12 Feb 2021 16:24:14 -0500
From:   Steven Rostedt <rostedt@...dmis.org>
To:     LKML <linux-kernel@...r.kernel.org>
Cc:     Ingo Molnar <mingo@...nel.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Masami Hiramatsu <mhiramat@...nel.org>
Subject: [PATCH] tracing: Make hash-ptr option default

From: "Steven Rostedt (VMware)" <rostedt@...dmis.org>

Since the original behavior of the trace events is to hash the %p pointers,
make that the default, and have developers have to enable the option in
order to have them unhashed.

[
  Based off of these patches:
    https://lore.kernel.org/lkml/160277369795.29307.6792451054602907237.stgit@devnote2/
]

Cc: Masami Hiramatsu <mhiramat@...nel.org>
Signed-off-by: Steven Rostedt (VMware) <rostedt@...dmis.org>
---
 kernel/trace/trace.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
index 16e252d39016..f5e8e39d6f57 100644
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -408,7 +408,8 @@ EXPORT_SYMBOL_GPL(unregister_ftrace_export);
 	 TRACE_ITER_PRINT_PARENT | TRACE_ITER_PRINTK |			\
 	 TRACE_ITER_ANNOTATE | TRACE_ITER_CONTEXT_INFO |		\
 	 TRACE_ITER_RECORD_CMD | TRACE_ITER_OVERWRITE |			\
-	 TRACE_ITER_IRQ_INFO | TRACE_ITER_MARKERS)
+	 TRACE_ITER_IRQ_INFO | TRACE_ITER_MARKERS |			\
+	 TRACE_ITER_HASH_PTR)
 
 /* trace_options that are only supported by global_trace */
 #define TOP_LEVEL_TRACE_FLAGS (TRACE_ITER_PRINTK |			\
-- 
2.25.4