diff options
| author |   Steven Rostedt <rostedt@goodmis.org> | 2008-05-12 21:21:01 +0200 |
|---|---|---|
| committer |   Thomas Gleixner <tglx@linutronix.de> | 2008-05-23 21:56:02 +0200 |
| commit | 53d0aa773053ab18287781e25d52c5faf9e0e09e (patch) | |
| tree | c0e268cb22a0416efca8709c677d41b513af04d3 /kernel/trace/trace.h | |
| parent | x86_64: fix kernel rodata NX setting (diff) | |
| download | linux-dev-53d0aa773053ab18287781e25d52c5faf9e0e09e.tar.xz linux-dev-53d0aa773053ab18287781e25d52c5faf9e0e09e.zip | |
ftrace: add logic to record overruns
This patch sets up the infrastructure to record overruns of the tracing
buffer.
Signed-off-by: Steven Rostedt <srostedt@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'kernel/trace/trace.h')
| -rw-r--r-- | kernel/trace/trace.h | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/kernel/trace/trace.h b/kernel/trace/trace.h index 8991c5efcc74..c1ec134ac356 100644 --- a/kernel/trace/trace.h +++ b/kernel/trace/trace.h @@ -97,6 +97,7 @@ struct trace_array_cpu { void *trace_head; /* producer */ void *trace_tail; /* consumer */ unsigned long trace_idx; + unsigned long overrun; unsigned long saved_latency; unsigned long critical_start; unsigned long critical_end; @@ -157,10 +158,13 @@ struct trace_seq { * results to users and which routines might sleep, etc: */ struct trace_iterator { - struct trace_seq seq; struct trace_array *tr; struct tracer *trace; + long last_overrun[NR_CPUS]; + long overrun[NR_CPUS]; + /* The below is zeroed out in pipe_read */ + struct trace_seq seq; struct trace_entry *ent; int cpu; |