forked from luck/tmp_suning_uos_patched
ftrace: introduce the "hex" output method
Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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2e0f576185
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@ -103,7 +103,8 @@ enum trace_iterator_flags {
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TRACE_ITER_SYM_ADDR = 0x04,
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TRACE_ITER_VERBOSE = 0x08,
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TRACE_ITER_RAW = 0x10,
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TRACE_ITER_BIN = 0x20,
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TRACE_ITER_HEX = 0x20,
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TRACE_ITER_BIN = 0x40,
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};
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#define TRACE_ITER_SYM_MASK \
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@ -116,6 +117,7 @@ static const char *trace_options[] = {
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"sym-addr",
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"verbose",
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"raw",
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"hex",
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"bin",
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NULL
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};
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@ -238,6 +240,47 @@ trace_seq_putmem(struct trace_seq *s, void *mem, size_t len)
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return len;
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}
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#define HEX_CHARS 17
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static notrace int
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trace_seq_putmem_hex(struct trace_seq *s, void *mem, size_t len)
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{
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unsigned char hex[HEX_CHARS];
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unsigned char *data;
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unsigned char byte;
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int i, j;
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BUG_ON(len >= HEX_CHARS);
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data = mem;
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#ifdef __BIG_ENDIAN
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for (i = 0, j = 0; i < len; i++) {
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#else
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for (i = len-1, j = 0; i >= 0; i--) {
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#endif
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byte = data[i];
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hex[j] = byte & 0x0f;
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if (hex[j] >= 10)
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hex[j] += 'a' - 10;
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else
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hex[j] += '0';
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j++;
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hex[j] = byte >> 4;
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if (hex[j] >= 10)
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hex[j] += 'a' - 10;
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else
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hex[j] += '0';
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j++;
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}
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hex[j] = ' ';
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j++;
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return trace_seq_putmem(s, hex, j);
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}
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static notrace void
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trace_seq_reset(struct trace_seq *s)
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{
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@ -1274,6 +1317,51 @@ do { \
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return 0; \
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} while (0)
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#define SEQ_PUT_HEX_FIELD_RET(s, x) \
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do { \
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if (!trace_seq_putmem_hex(s, &(x), sizeof(x))) \
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return 0; \
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} while (0)
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static notrace int print_hex_fmt(struct trace_iterator *iter)
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{
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struct trace_seq *s = &iter->seq;
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unsigned char newline = '\n';
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struct trace_entry *entry;
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int S;
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entry = iter->ent;
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SEQ_PUT_HEX_FIELD_RET(s, entry->pid);
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SEQ_PUT_HEX_FIELD_RET(s, iter->cpu);
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SEQ_PUT_HEX_FIELD_RET(s, entry->t);
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switch (entry->type) {
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case TRACE_FN:
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SEQ_PUT_HEX_FIELD_RET(s, entry->fn.ip);
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SEQ_PUT_HEX_FIELD_RET(s, entry->fn.parent_ip);
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break;
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case TRACE_CTX:
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S = entry->ctx.prev_state < sizeof(state_to_char) ?
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state_to_char[entry->ctx.prev_state] : 'X';
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SEQ_PUT_HEX_FIELD_RET(s, entry->ctx.prev_pid);
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SEQ_PUT_HEX_FIELD_RET(s, entry->ctx.prev_prio);
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SEQ_PUT_HEX_FIELD_RET(s, S);
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SEQ_PUT_HEX_FIELD_RET(s, entry->ctx.next_pid);
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SEQ_PUT_HEX_FIELD_RET(s, entry->ctx.next_prio);
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SEQ_PUT_HEX_FIELD_RET(s, entry->fn.parent_ip);
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break;
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case TRACE_SPECIAL:
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SEQ_PUT_HEX_FIELD_RET(s, entry->special.arg1);
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SEQ_PUT_HEX_FIELD_RET(s, entry->special.arg2);
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SEQ_PUT_HEX_FIELD_RET(s, entry->special.arg3);
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break;
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}
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SEQ_PUT_FIELD_RET(s, newline);
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return 1;
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}
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static notrace int print_bin_fmt(struct trace_iterator *iter)
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{
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struct trace_seq *s = &iter->seq;
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@ -1327,6 +1415,9 @@ static int print_trace_line(struct trace_iterator *iter)
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if (trace_flags & TRACE_ITER_BIN)
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return print_bin_fmt(iter);
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if (trace_flags & TRACE_ITER_HEX)
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return print_hex_fmt(iter);
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if (trace_flags & TRACE_ITER_RAW)
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return print_raw_fmt(iter);
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