From 5a2e3995951176e1aaa63d17ae2e1d26ac99003d Mon Sep 17 00:00:00 2001
From: Kei Tokunaga <tokunaga.keiich@jp.fujitsu.com>
Date: Thu, 1 Apr 2010 20:40:58 +0900
Subject: [PATCH] [SCSI] ftrace: add __print_hex()
__print_hex() prints values in an array in hex (w/o '0x') (space separated)
EX) 92 33 32 f3 ee 4d
Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Signed-off-by: Tomohiro Kusumi <kusumi.tomohiro@jp.fujitsu.com>
Signed-off-by: Kei Tokunaga <tokunaga.keiich@jp.fujitsu.com>
Acked-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
---
include/linux/ftrace_event.h | 3 +++
include/trace/ftrace.h | 3 +++
kernel/trace/trace_output.c | 15 +++++++++++++++
3 files changed, 21 insertions(+)
diff --git a/include/linux/ftrace_event.h b/include/linux/ftrace_event.h
index c0f4b364c711d..c3c5aaaae53af 100644
--- a/include/linux/ftrace_event.h
+++ b/include/linux/ftrace_event.h
@@ -25,6 +25,9 @@ const char *ftrace_print_flags_seq(struct trace_seq *p, const char *delim,
const char *ftrace_print_symbols_seq(struct trace_seq *p, unsigned long val,
const struct trace_print_flags *symbol_array);
+const char *ftrace_print_hex_seq(struct trace_seq *p,
+ const unsigned char *buf, int len);
+
/*
* The trace entry - the most basic unit of tracing. This is what
* is printed in the end as a single line in the trace output, such as:
diff --git a/include/trace/ftrace.h b/include/trace/ftrace.h
index ea6f9d4a20e9c..c48320b3dabd4 100644
--- a/include/trace/ftrace.h
+++ b/include/trace/ftrace.h
@@ -198,6 +198,9 @@
ftrace_print_symbols_seq(p, value, symbols); \
})
+#undef __print_hex
+#define __print_hex(buf, buf_len) ftrace_print_hex_seq(p, buf, buf_len)
+
#undef DECLARE_EVENT_CLASS
#define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print) \
static notrace enum print_line_t \
diff --git a/kernel/trace/trace_output.c b/kernel/trace/trace_output.c
index 8e46b3323cdcd..7c4a0ca650b56 100644
--- a/kernel/trace/trace_output.c
+++ b/kernel/trace/trace_output.c
@@ -355,6 +355,21 @@ ftrace_print_symbols_seq(struct trace_seq *p, unsigned long val,
}
EXPORT_SYMBOL(ftrace_print_symbols_seq);
+const char *
+ftrace_print_hex_seq(struct trace_seq *p, const unsigned char *buf, int buf_len)
+{
+ int i;
+ const char *ret = p->buffer + p->len;
+
+ for (i = 0; i < buf_len; i++)
+ trace_seq_printf(p, "%s%2.2x", i == 0 ? "" : " ", buf[i]);
+
+ trace_seq_putc(p, 0);
+
+ return ret;
+}
+EXPORT_SYMBOL(ftrace_print_hex_seq);
+
#ifdef CONFIG_KRETPROBES
static inline const char *kretprobed(const char *name)
{
--
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