diff options
| author | Kei Tokunaga <tokunaga.keiich@jp.fujitsu.com> | 2010-04-01 20:40:58 +0900 |
|---|---|---|
| committer | James Bottomley <James.Bottomley@suse.de> | 2010-04-30 12:50:22 -0500 |
| commit | 5a2e3995951176e1aaa63d17ae2e1d26ac99003d (patch) | |
| tree | 7305a7dc2c1822e5d4fec610d1c9bb6ddfadce70 | |
| parent | 59c31b69d278b760fb84266f99c1dcb0f73ec51d (diff) | |
[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>
| -rw-r--r-- | include/linux/ftrace_event.h | 3 | ||||
| -rw-r--r-- | include/trace/ftrace.h | 3 | ||||
| -rw-r--r-- | kernel/trace/trace_output.c | 15 |
3 files changed, 21 insertions, 0 deletions
diff --git a/include/linux/ftrace_event.h b/include/linux/ftrace_event.h index c0f4b364c71..c3c5aaaae53 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 ea6f9d4a20e..c48320b3dab 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 8e46b3323cd..7c4a0ca650b 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) { |