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ftrace: bin-output 

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Ingo Molnar 2008-05-12 21:20:47 +02:00 committed by Thomas Gleixner
parent f9896bf309
commit cb0f12aae8
1 changed files with 50 additions and 0 deletions
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50
kernel/trace/trace.c
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@ -154,6 +154,7 @@ enum trace_iterator_flags {
TRACE_ITER_SYM_ADDR = 0x04,
TRACE_ITER_VERBOSE = 0x08,
TRACE_ITER_RAW = 0x10,
TRACE_ITER_BIN = 0x20,
};
#define TRACE_ITER_SYM_MASK \
@ -166,6 +167,7 @@ static const char *trace_options[] = {
"sym-addr",
"verbose",
"raw",
"bin",
NULL
};
@ -275,6 +277,18 @@ trace_seq_putc(struct trace_seq *s, unsigned char c)
return 1;
}
static notrace int
trace_seq_putmem(struct trace_seq *s, void *mem, size_t len)
{
if (len > ((PAGE_SIZE - 1) - s->len))
return 0;
memcpy(s->buffer + s->len, mem, len);
s->len += len;
return len;
}
static notrace void
trace_seq_reset(struct trace_seq *s)
{
@ -1261,6 +1275,39 @@ static notrace int print_raw_fmt(struct trace_iterator *iter)
return 1;
}
#define SEQ_PUT_FIELD_RET(s, x) \
do { \
if (!trace_seq_putmem(s, &(x), sizeof(x))) \
return 0; \
} while (0)
static notrace int print_bin_fmt(struct trace_iterator *iter)
{
struct trace_seq *s = &iter->seq;
struct trace_entry *entry;
entry = iter->ent;
SEQ_PUT_FIELD_RET(s, entry->pid);
SEQ_PUT_FIELD_RET(s, entry->cpu);
SEQ_PUT_FIELD_RET(s, entry->t);
switch (entry->type) {
case TRACE_FN:
SEQ_PUT_FIELD_RET(s, entry->fn.ip);
SEQ_PUT_FIELD_RET(s, entry->fn.parent_ip);
break;
case TRACE_CTX:
SEQ_PUT_FIELD_RET(s, entry->ctx.prev_pid);
SEQ_PUT_FIELD_RET(s, entry->ctx.prev_prio);
SEQ_PUT_FIELD_RET(s, entry->ctx.prev_state);
SEQ_PUT_FIELD_RET(s, entry->ctx.next_pid);
SEQ_PUT_FIELD_RET(s, entry->ctx.next_prio);
break;
}
return 1;
}
static int trace_empty(struct trace_iterator *iter)
{
struct trace_array_cpu *data;
@ -1279,6 +1326,9 @@ static int trace_empty(struct trace_iterator *iter)
static int print_trace_line(struct trace_iterator *iter)
{
if (trace_flags & TRACE_ITER_BIN)
return print_bin_fmt(iter);
if (trace_flags & TRACE_ITER_RAW)
return print_raw_fmt(iter);