From f9896bf30928922a3913a3810a4ab7908da6cfe7 Mon Sep 17 00:00:00 2001 From: Ingo Molnar Date: Mon, 12 May 2008 21:20:47 +0200 Subject: [PATCH] ftrace: add raw output Signed-off-by: Ingo Molnar Signed-off-by: Thomas Gleixner --- kernel/trace/trace.c | 63 ++++++++++++++++++++++++++++++++++++++------ 1 file changed, 55 insertions(+), 8 deletions(-) diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c index 42f1926acf73..bebd263f582f 100644 --- a/kernel/trace/trace.c +++ b/kernel/trace/trace.c @@ -153,6 +153,7 @@ enum trace_iterator_flags { TRACE_ITER_SYM_OFFSET = 0x02, TRACE_ITER_SYM_ADDR = 0x04, TRACE_ITER_VERBOSE = 0x08, + TRACE_ITER_RAW = 0x10, }; #define TRACE_ITER_SYM_MASK \ @@ -164,6 +165,7 @@ static const char *trace_options[] = { "sym-offset", "sym-addr", "verbose", + "raw", NULL }; @@ -1099,7 +1101,7 @@ lat_print_timestamp(struct trace_seq *s, unsigned long long abs_usecs, static const char state_to_char[] = TASK_STATE_TO_CHAR_STR; -static notrace void +static notrace int print_lat_fmt(struct trace_iterator *iter, unsigned int trace_idx, int cpu) { struct trace_seq *s = &iter->seq; @@ -1154,10 +1156,10 @@ print_lat_fmt(struct trace_iterator *iter, unsigned int trace_idx, int cpu) default: trace_seq_printf(s, "Unknown type %d\n", entry->type); } + return 1; } -static notrace int -print_trace_fmt(struct trace_iterator *iter) +static notrace int print_trace_fmt(struct trace_iterator *iter) { struct trace_seq *s = &iter->seq; unsigned long sym_flags = (trace_flags & TRACE_ITER_SYM_MASK); @@ -1222,6 +1224,43 @@ print_trace_fmt(struct trace_iterator *iter) return 1; } +static notrace int print_raw_fmt(struct trace_iterator *iter) +{ + struct trace_seq *s = &iter->seq; + struct trace_entry *entry; + int ret; + int S; + + entry = iter->ent; + + ret = trace_seq_printf(s, "%d %d %llu ", + entry->pid, iter->cpu, entry->t); + if (!ret) + return 0; + + switch (entry->type) { + case TRACE_FN: + ret = trace_seq_printf(s, "%x %x\n", + entry->fn.ip, entry->fn.parent_ip); + if (!ret) + return 0; + break; + case TRACE_CTX: + S = entry->ctx.prev_state < sizeof(state_to_char) ? + state_to_char[entry->ctx.prev_state] : 'X'; + ret = trace_seq_printf(s, "%d %d %c %d %d\n", + entry->ctx.prev_pid, + entry->ctx.prev_prio, + S, + entry->ctx.next_pid, + entry->ctx.next_prio); + if (!ret) + return 0; + break; + } + return 1; +} + static int trace_empty(struct trace_iterator *iter) { struct trace_array_cpu *data; @@ -1238,6 +1277,17 @@ static int trace_empty(struct trace_iterator *iter) return 1; } +static int print_trace_line(struct trace_iterator *iter) +{ + if (trace_flags & TRACE_ITER_RAW) + return print_raw_fmt(iter); + + if (iter->iter_flags & TRACE_FILE_LAT_FMT) + return print_lat_fmt(iter, iter->idx, iter->cpu); + + return print_trace_fmt(iter); +} + static int s_show(struct seq_file *m, void *v) { struct trace_iterator *iter = v; @@ -1259,10 +1309,7 @@ static int s_show(struct seq_file *m, void *v) print_func_help_header(m); } } else { - if (iter->iter_flags & TRACE_FILE_LAT_FMT) - print_lat_fmt(iter, iter->idx, iter->cpu); - else - print_trace_fmt(iter); + print_trace_line(iter); trace_print_seq(m, &iter->seq); } @@ -1870,7 +1917,7 @@ tracing_read_pipe(struct file *filp, char __user *ubuf, } while ((entry = find_next_entry_inc(iter)) != NULL) { - ret = print_trace_fmt(iter); + ret = print_trace_line(iter); if (!ret) break; -- 2.34.1