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ftrace: trace next state 

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Peter Zijlstra 2008-05-12 21:20:53 +02:00 committed by Thomas Gleixner
parent 88a4216c3e
commit bac524d3f3
2 changed files with 26 additions and 10 deletions
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35
kernel/trace/trace.c
View File

@ -736,6 +736,7 @@ tracing_sched_switch_trace(struct trace_array *tr,
entry->ctx.prev_state = prev->state;
entry->ctx.next_pid = next->pid;
entry->ctx.next_prio = next->prio;
entry->ctx.next_state = next->state;
__trace_stack(tr, data, flags, 4);
spin_unlock_irqrestore(&data->lock, irq_flags);
}
@ -759,6 +760,7 @@ tracing_sched_wakeup_trace(struct trace_array *tr,
entry->ctx.prev_state = curr->state;
entry->ctx.next_pid = wakee->pid;
entry->ctx.next_prio = wakee->prio;
entry->ctx.next_state = wakee->state;
__trace_stack(tr, data, flags, 5);
spin_unlock_irqrestore(&data->lock, irq_flags);
@ -1207,7 +1209,7 @@ print_lat_fmt(struct trace_iterator *iter, unsigned int trace_idx, int cpu)
unsigned long abs_usecs;
unsigned long rel_usecs;
char *comm;
int S;
int S, T;
int i;
if (!next_entry)
@ -1241,14 +1243,17 @@ print_lat_fmt(struct trace_iterator *iter, unsigned int trace_idx, int cpu)
case TRACE_WAKE:
S = entry->ctx.prev_state < sizeof(state_to_char) ?
state_to_char[entry->ctx.prev_state] : 'X';
T = entry->ctx.next_state < sizeof(state_to_char) ?
state_to_char[entry->ctx.next_state] : 'X';
comm = trace_find_cmdline(entry->ctx.next_pid);
trace_seq_printf(s, " %5d:%3d:%c %s %5d:%3d %s\n",
trace_seq_printf(s, " %5d:%3d:%c %s %5d:%3d:%c %s\n",
entry->ctx.prev_pid,
entry->ctx.prev_prio,
S, entry->type == TRACE_CTX ? "==>" : " +",
entry->ctx.next_pid,
entry->ctx.next_prio,
comm);
T, comm);
break;
case TRACE_SPECIAL:
trace_seq_printf(s, "# %ld %ld %ld\n",
@ -1280,7 +1285,7 @@ static int print_trace_fmt(struct trace_iterator *iter)
unsigned long secs;
char *comm;
int ret;
int S;
int S, T;
int i;
entry = iter->ent;
@ -1324,13 +1329,16 @@ static int print_trace_fmt(struct trace_iterator *iter)
case TRACE_WAKE:
S = entry->ctx.prev_state < sizeof(state_to_char) ?
state_to_char[entry->ctx.prev_state] : 'X';
ret = trace_seq_printf(s, " %5d:%3d:%c %s %5d:%3d\n",
T = entry->ctx.next_state < sizeof(state_to_char) ?
state_to_char[entry->ctx.next_state] : 'X';
ret = trace_seq_printf(s, " %5d:%3d:%c %s %5d:%3d:%c\n",
entry->ctx.prev_pid,
entry->ctx.prev_prio,
S,
entry->type == TRACE_CTX ? "==>" : " +",
entry->ctx.next_pid,
entry->ctx.next_prio);
entry->ctx.next_prio,
T);
if (!ret)
return 0;
break;
@ -1367,7 +1375,7 @@ static int print_raw_fmt(struct trace_iterator *iter)
struct trace_seq *s = &iter->seq;
struct trace_entry *entry;
int ret;
int S;
int S, T;
entry = iter->ent;
@ -1387,14 +1395,17 @@ static int print_raw_fmt(struct trace_iterator *iter)
case TRACE_WAKE:
S = entry->ctx.prev_state < sizeof(state_to_char) ?
state_to_char[entry->ctx.prev_state] : 'X';
T = entry->ctx.next_state < sizeof(state_to_char) ?
state_to_char[entry->ctx.next_state] : 'X';
if (entry->type == TRACE_WAKE)
S = '+';
ret = trace_seq_printf(s, "%d %d %c %d %d\n",
ret = trace_seq_printf(s, "%d %d %c %d %d %c\n",
entry->ctx.prev_pid,
entry->ctx.prev_prio,
S,
entry->ctx.next_pid,
entry->ctx.next_prio);
entry->ctx.next_prio,
T);
if (!ret)
return 0;
break;
@ -1428,7 +1439,7 @@ static int print_hex_fmt(struct trace_iterator *iter)
struct trace_seq *s = &iter->seq;
unsigned char newline = '\n';
struct trace_entry *entry;
int S;
int S, T;
entry = iter->ent;
@ -1445,6 +1456,8 @@ static int print_hex_fmt(struct trace_iterator *iter)
case TRACE_WAKE:
S = entry->ctx.prev_state < sizeof(state_to_char) ?
state_to_char[entry->ctx.prev_state] : 'X';
T = entry->ctx.next_state < sizeof(state_to_char) ?
state_to_char[entry->ctx.next_state] : 'X';
if (entry->type == TRACE_WAKE)
S = '+';
SEQ_PUT_HEX_FIELD_RET(s, entry->ctx.prev_pid);
@ -1453,6 +1466,7 @@ static int print_hex_fmt(struct trace_iterator *iter)
SEQ_PUT_HEX_FIELD_RET(s, entry->ctx.next_pid);
SEQ_PUT_HEX_FIELD_RET(s, entry->ctx.next_prio);
SEQ_PUT_HEX_FIELD_RET(s, entry->fn.parent_ip);
SEQ_PUT_HEX_FIELD_RET(s, T);
break;
case TRACE_SPECIAL:
case TRACE_STACK:
@ -1488,6 +1502,7 @@ static int print_bin_fmt(struct trace_iterator *iter)
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);
SEQ_PUT_FIELD_RET(s, entry->ctx.next_state);
break;
case TRACE_SPECIAL:
case TRACE_STACK:

1
kernel/trace/trace.h
View File

@ -23,6 +23,7 @@ struct ctx_switch_entry {
unsigned char prev_state;
unsigned int next_pid;
unsigned char next_prio;
unsigned char next_state;
};
/*