Since the sched_switch tracepoint introduces a new variable to
report sched-out task state in symbolic char, we switch to use
that instead to spare from knowing internal implementations
in kernel.
Signed-off-by: Ze Gao <zegao@xxxxxxxxxxx>
---
plugins/plugin_sched_switch.c | 29 ++++-------------------------
1 file changed, 4 insertions(+), 25 deletions(-)
diff --git a/plugins/plugin_sched_switch.c b/plugins/plugin_sched_switch.c
index 8752cae..5dbdc28 100644
--- a/plugins/plugin_sched_switch.c
+++ b/plugins/plugin_sched_switch.c
@@ -9,27 +9,6 @@
#include "event-parse.h"
#include "trace-seq.h"
-static void write_state(struct trace_seq *s, int val)
-{
- const char states[] = "SDTtZXxW";
- int found = 0;
- int i;
-
- for (i = 0; i < (sizeof(states) - 1); i++) {
- if (!(val & (1 << i)))
- continue;
-
- if (found)
- trace_seq_putc(s, '|');
-
- found = 1;
- trace_seq_putc(s, states[i]);
- }
-
- if (!found)
- trace_seq_putc(s, 'R');
-}
-
static void write_and_save_comm(struct tep_format_field *field,
struct tep_record *record,
struct trace_seq *s, int pid)
@@ -97,10 +76,10 @@ static int sched_switch_handler(struct trace_seq *s,
trace_seq_printf(s, "%lld ", val);
if (tep_get_field_val(s, event, "prev_prio", record, &val, 1) == 0)
- trace_seq_printf(s, "[%d] ", (int) val);
+ trace_seq_printf(s, "[%d] ", (short) val);
- if (tep_get_field_val(s, event, "prev_state", record, &val, 1) == 0)
- write_state(s, val);
+ if (tep_get_field_val(s, event, "prev_state_char", record, &val, 1) == 0)
+ trace_seq_putc(s, (char) val);
trace_seq_puts(s, " ==> ");
@@ -115,7 +94,7 @@ static int sched_switch_handler(struct trace_seq *s,
trace_seq_printf(s, "%lld", val);
if (tep_get_field_val(s, event, "next_prio", record, &val, 1) == 0)
- trace_seq_printf(s, " [%d]", (int) val);
+ trace_seq_printf(s, " [%d]", (short) val);
return 0;
}
--
2.40.1
|