sched: remove unused fields from struct rq

Impact: cleanup, new schedstat ABI

Since they are used on in statistics and are always set to zero, the
following fields from struct rq have been removed: yld_exp_empty,
yld_act_empty and yld_both_empty.

Both Sched Debug and SCHEDSTAT_VERSION versions has also been
incremented since ABIs have been changed.

The schedtop tool has been updated to properly handle new version of
schedstat:

   http://rt.wiki.kernel.org/index.php/Schedtop_utility

Signed-off-by: Luis Henriques <henrix@sapo.pt>
Acked-by: Gregory Haskins <ghaskins@novell.com>
Acked-by: Peter Zijlstra <peterz@infradead.org>
LKML-Reference: <20090324221002.GA10061@hades.domain.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 1 insertions, 4 deletions

diff --git a/kernel/sched_debug.c b/kernel/sched_debug.c
index 4daebffa0565..467ca72f1657 100644
--- a/kernel/sched_debug.c
+++ b/kernel/sched_debug.c
@@ -286,9 +286,6 @@ static void print_cpu(struct seq_file *m, int cpu)
 #ifdef CONFIG_SCHEDSTATS
 #define P(n) SEQ_printf(m, "  .%-30s: %d\n", #n, rq->n);
 
-        P(yld_exp_empty);
-        P(yld_act_empty);
-        P(yld_both_empty);
         P(yld_count);
 
         P(sched_switch);
@@ -313,7 +310,7 @@ static int sched_debug_show(struct seq_file *m, void *v)
         u64 now = ktime_to_ns(ktime_get());
         int cpu;
 
-        SEQ_printf(m, "Sched Debug Version: v0.08, %s %.*s\n",
+        SEQ_printf(m, "Sched Debug Version: v0.09, %s %.*s\n",
                 init_utsname()->release,
                 (int)strcspn(init_utsname()->version, " "),
                 init_utsname()->version);