diff options
| -rw-r--r-- | include/linux/ftrace_event.h | 3 | ||||
| -rw-r--r-- | kernel/trace/trace.c | 9 | ||||
| -rw-r--r-- | kernel/trace/trace_events.c | 1 | ||||
| -rw-r--r-- | kernel/trace/trace_output.c | 5 |
4 files changed, 14 insertions, 4 deletions
diff --git a/include/linux/ftrace_event.h b/include/linux/ftrace_event.h index c3da42dd22ba..7c5e1765a0fd 100644 --- a/include/linux/ftrace_event.h +++ b/include/linux/ftrace_event.h @@ -49,7 +49,8 @@ struct trace_entry { unsigned char flags; unsigned char preempt_count; int pid; - int padding; + unsigned short migrate_disable; + unsigned short padding; }; #define FTRACE_MAX_EVENT \ diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c index f2bd275bb60f..6a4df0bce134 100644 --- a/kernel/trace/trace.c +++ b/kernel/trace/trace.c @@ -1123,6 +1123,8 @@ tracing_generic_entry_update(struct trace_entry *entry, unsigned long flags, ((pc & HARDIRQ_MASK) ? TRACE_FLAG_HARDIRQ : 0) | ((pc & SOFTIRQ_MASK) ? TRACE_FLAG_SOFTIRQ : 0) | (need_resched() ? TRACE_FLAG_NEED_RESCHED : 0); + + entry->migrate_disable = (tsk) ? tsk->migrate_disable & 0xFF : 0; } EXPORT_SYMBOL_GPL(tracing_generic_entry_update); @@ -1850,9 +1852,10 @@ static void print_lat_help_header(struct seq_file *m) seq_puts(m, "# | / _----=> need-resched \n"); seq_puts(m, "# || / _---=> hardirq/softirq \n"); seq_puts(m, "# ||| / _--=> preempt-depth \n"); - seq_puts(m, "# |||| / delay \n"); - seq_puts(m, "# cmd pid ||||| time | caller \n"); - seq_puts(m, "# \\ / ||||| \\ | / \n"); + seq_puts(m, "# |||| / _--=> migrate-disable\n"); + seq_puts(m, "# ||||| / delay \n"); + seq_puts(m, "# cmd pid |||||| time | caller \n"); + seq_puts(m, "# \\ / ||||| \\ | / \n"); } static void print_func_help_header(struct seq_file *m) diff --git a/kernel/trace/trace_events.c b/kernel/trace/trace_events.c index c212a7f934ec..aca63cccfd8d 100644 --- a/kernel/trace/trace_events.c +++ b/kernel/trace/trace_events.c @@ -116,6 +116,7 @@ static int trace_define_common_fields(void) __common_field(unsigned char, flags); __common_field(unsigned char, preempt_count); __common_field(int, pid); + __common_field(unsigned short, migrate_disable); __common_field(int, padding); return ret; diff --git a/kernel/trace/trace_output.c b/kernel/trace/trace_output.c index 51999309a6cf..c93de84fb8eb 100644 --- a/kernel/trace/trace_output.c +++ b/kernel/trace/trace_output.c @@ -591,6 +591,11 @@ int trace_print_lat_fmt(struct trace_seq *s, struct trace_entry *entry) else ret = trace_seq_putc(s, '.'); + if (entry->migrate_disable) + ret = trace_seq_printf(s, "%x", entry->migrate_disable); + else + ret = trace_seq_putc(s, '.'); + return ret; } |