diff options
| author |   Ingo Molnar <mingo@elte.hu> | 2008-05-12 21:20:47 +0200 |
|---|---|---|
| committer |   Thomas Gleixner <tglx@linutronix.de> | 2008-05-23 20:52:33 +0200 |
| commit | f0a920d5752e1788c0cba2add103076bcc0f7a49 (patch) | |
| tree | db9c5383c3464808570b1121e44f80b817f7f263 /kernel/trace/trace.c | |
| parent | ftrace: bin-output (diff) | |
| download | linux-dev-f0a920d5752e1788c0cba2add103076bcc0f7a49.tar.xz linux-dev-f0a920d5752e1788c0cba2add103076bcc0f7a49.zip | |
ftrace: add trace_special()
for ad-hoc tracing.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'kernel/trace/trace.c')
| -rw-r--r-- | kernel/trace/trace.c | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c index d78cbc4fc519..fa13059eb462 100644 --- a/kernel/trace/trace.c +++ b/kernel/trace/trace.c @@ -137,6 +137,7 @@ enum trace_type { TRACE_FN, TRACE_CTX, + TRACE_SPECIAL, __TRACE_LAST_TYPE }; @@ -701,6 +702,22 @@ ftrace(struct trace_array *tr, struct trace_array_cpu *data, } notrace void +trace_special(struct trace_array *tr, struct trace_array_cpu *data, + unsigned long arg1, unsigned long arg2, unsigned long arg3) +{ + struct trace_entry *entry; + + spin_lock(&data->lock); + entry = tracing_get_trace_entry(tr, data); + tracing_generic_entry_update(entry, 0); + entry->type = TRACE_SPECIAL; + entry->special.arg1 = arg1; + entry->special.arg2 = arg2; + entry->special.arg3 = arg3; + spin_unlock(&data->lock); +} + +notrace void tracing_sched_switch_trace(struct trace_array *tr, struct trace_array_cpu *data, struct task_struct *prev, struct task_struct *next, @@ -1167,6 +1184,12 @@ print_lat_fmt(struct trace_iterator *iter, unsigned int trace_idx, int cpu) entry->ctx.next_prio, comm); break; + case TRACE_SPECIAL: + trace_seq_printf(s, " %lx %lx %lx\n", + entry->special.arg1, + entry->special.arg2, + entry->special.arg3); + break; default: trace_seq_printf(s, "Unknown type %d\n", entry->type); } @@ -1234,6 +1257,14 @@ static notrace int print_trace_fmt(struct trace_iterator *iter) if (!ret) return 0; break; + case TRACE_SPECIAL: + ret = trace_seq_printf(s, " %lx %lx %lx\n", + entry->special.arg1, + entry->special.arg2, + entry->special.arg3); + if (!ret) + return 0; + break; } return 1; } @@ -1271,6 +1302,14 @@ static notrace int print_raw_fmt(struct trace_iterator *iter) if (!ret) return 0; break; + case TRACE_SPECIAL: + ret = trace_seq_printf(s, " %lx %lx %lx\n", + entry->special.arg1, + entry->special.arg2, + entry->special.arg3); + if (!ret) + return 0; + break; } return 1; } @@ -1304,6 +1343,11 @@ static notrace int print_bin_fmt(struct trace_iterator *iter) SEQ_PUT_FIELD_RET(s, entry->ctx.next_pid); SEQ_PUT_FIELD_RET(s, entry->ctx.next_prio); break; + case TRACE_SPECIAL: + SEQ_PUT_FIELD_RET(s, entry->special.arg1); + SEQ_PUT_FIELD_RET(s, entry->special.arg2); + SEQ_PUT_FIELD_RET(s, entry->special.arg3); + break; } return 1; } |