| From: Daniel Bristot de Oliveira <bristot@redhat.com> |
| Date: Mon, 26 Jun 2017 17:07:14 +0200 |
| Subject: sched/debug: Inform the number of rt/dl task that can migrate |
| |
| Add the value of the rt_rq.rt_nr_migratory and dl_rq.dl_nr_migratory |
| to the sched_debug output, for instance: |
| |
| rt_rq[0]: |
| .rt_nr_running : 2 |
| .rt_nr_migratory : 1 <--- Like this |
| .rt_throttled : 0 |
| .rt_time : 828.645877 |
| .rt_runtime : 1000.000000 |
| |
| This is useful to debug problems related to the dl/rt schedulers. |
| |
| This also fixes the format of some variables, that were unsigned, rather |
| than signed. |
| |
| Signed-off-by: Daniel Bristot de Oliveira <bristot@redhat.com> |
| Cc: Luis Claudio R. Goncalves <lgoncalv@redhat.com> |
| Cc: Clark Williams <williams@redhat.com> |
| Cc: Luiz Capitulino <lcapitulino@redhat.com> |
| Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de> |
| Cc: Thomas Gleixner <tglx@linutronix.de> |
| Cc: Steven Rostedt <rostedt@goodmis.org> |
| Cc: Peter Zijlstra <peterz@infradead.org> |
| Cc: Ingo Molnar <mingo@kernel.org> |
| Cc: LKML <linux-kernel@vger.kernel.org> |
| Cc: linux-rt-users <linux-rt-users@vger.kernel.org> |
| Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> |
| --- |
| kernel/sched/debug.c | 17 +++++++++++++++-- |
| 1 file changed, 15 insertions(+), 2 deletions(-) |
| |
| --- a/kernel/sched/debug.c |
| +++ b/kernel/sched/debug.c |
| @@ -552,15 +552,21 @@ void print_rt_rq(struct seq_file *m, int |
| |
| #define P(x) \ |
| SEQ_printf(m, " .%-30s: %Ld\n", #x, (long long)(rt_rq->x)) |
| +#define PU(x) \ |
| + SEQ_printf(m, " .%-30s: %lu\n", #x, (unsigned long)(rt_rq->x)) |
| #define PN(x) \ |
| SEQ_printf(m, " .%-30s: %Ld.%06ld\n", #x, SPLIT_NS(rt_rq->x)) |
| |
| - P(rt_nr_running); |
| + PU(rt_nr_running); |
| +#ifdef CONFIG_SMP |
| + PU(rt_nr_migratory); |
| +#endif |
| P(rt_throttled); |
| PN(rt_time); |
| PN(rt_runtime); |
| |
| #undef PN |
| +#undef PU |
| #undef P |
| } |
| |
| @@ -569,14 +575,21 @@ void print_dl_rq(struct seq_file *m, int |
| struct dl_bw *dl_bw; |
| |
| SEQ_printf(m, "\ndl_rq[%d]:\n", cpu); |
| - SEQ_printf(m, " .%-30s: %ld\n", "dl_nr_running", dl_rq->dl_nr_running); |
| + |
| +#define PU(x) \ |
| + SEQ_printf(m, " .%-30s: %lu\n", #x, (unsigned long)(dl_rq->x)) |
| + |
| + PU(dl_nr_running); |
| #ifdef CONFIG_SMP |
| + PU(dl_nr_migratory); |
| dl_bw = &cpu_rq(cpu)->rd->dl_bw; |
| #else |
| dl_bw = &dl_rq->dl_bw; |
| #endif |
| SEQ_printf(m, " .%-30s: %lld\n", "dl_bw->bw", dl_bw->bw); |
| SEQ_printf(m, " .%-30s: %lld\n", "dl_bw->total_bw", dl_bw->total_bw); |
| + |
| +#undef PU |
| } |
| |
| extern __read_mostly int sched_clock_running; |