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. [ I am sending this patch to be able to demonstrate ] [ the problem in the kernel-rt, however, this patch can ] [ be merged in the vanilla kernel, if people decide it ] [ is worth having it. ] Signed-off-by: Daniel Bristot de Oliveira <[email protected]> Cc: Luis Claudio R. Goncalves <[email protected]> Cc: Clark Williams <[email protected]> Cc: Luiz Capitulino <[email protected]> Cc: Sebastian Andrzej Siewior <[email protected]> Cc: Thomas Gleixner <[email protected]> Cc: Steven Rostedt <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Ingo Molnar <[email protected]> Cc: LKML <[email protected]> Cc: linux-rt-users <[email protected]> --- kernel/sched/debug.c | 15 +++++++++++++-- 1 file changed, 13 insertions(+), 2 deletions(-) diff --git a/kernel/sched/debug.c b/kernel/sched/debug.c index 0e2af53..2bdeda8 100644 --- a/kernel/sched/debug.c +++ b/kernel/sched/debug.c @@ -552,15 +552,19 @@ void print_rt_rq(struct seq_file *m, int cpu, struct rt_rq *rt_rq) #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); + PU(rt_nr_migratory); P(rt_throttled); PN(rt_time); PN(rt_runtime); #undef PN +#undef PU #undef P } @@ -569,7 +573,12 @@ void print_dl_rq(struct seq_file *m, int cpu, struct dl_rq *dl_rq) 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); + PU(dl_nr_migratory); #ifdef CONFIG_SMP dl_bw = &cpu_rq(cpu)->rd->dl_bw; #else @@ -577,6 +586,8 @@ void print_dl_rq(struct seq_file *m, int cpu, struct dl_rq *dl_rq) #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; -- 2.9.4
