trace_flags |= TRACE_FLAG_HARDIRQ;
if (in_serving_softirq())
trace_flags |= TRACE_FLAG_SOFTIRQ;
+ if (softirq_count() >> (SOFTIRQ_SHIFT + 1))
+ trace_flags |= TRACE_FLAG_BH_OFF;
if (tif_need_resched())
trace_flags |= TRACE_FLAG_NEED_RESCHED;
static void print_lat_help_header(struct seq_file *m)
{
seq_puts(m, "# _------=> CPU# \n"
- "# / _-----=> irqs-off \n"
+ "# / _-----=> irqs-off/BH-disabled\n"
"# | / _----=> need-resched \n"
"# || / _---=> hardirq/softirq \n"
"# ||| / _--=> preempt-depth \n"
print_event_info(buf, m);
- seq_printf(m, "# %.*s _-----=> irqs-off\n", prec, space);
+ seq_printf(m, "# %.*s _-----=> irqs-off/BH-disabled\n", prec, space);
seq_printf(m, "# %.*s / _----=> need-resched\n", prec, space);
seq_printf(m, "# %.*s| / _---=> hardirq/softirq\n", prec, space);
seq_printf(m, "# %.*s|| / _--=> preempt-depth\n", prec, space);
char irqs_off;
int hardirq;
int softirq;
+ int bh_off;
int nmi;
nmi = entry->flags & TRACE_FLAG_NMI;
hardirq = entry->flags & TRACE_FLAG_HARDIRQ;
softirq = entry->flags & TRACE_FLAG_SOFTIRQ;
+ bh_off = entry->flags & TRACE_FLAG_BH_OFF;
irqs_off =
+ (entry->flags & TRACE_FLAG_IRQS_OFF && bh_off) ? 'D' :
(entry->flags & TRACE_FLAG_IRQS_OFF) ? 'd' :
+ bh_off ? 'b' :
(entry->flags & TRACE_FLAG_IRQS_NOSUPPORT) ? 'X' :
'.';