Piteball/android_kernel_google_msm
1
0
Fork 0
mirror of https://github.com/followmsi/android_kernel_google_msm.git synced 2024-11-06 23:17:41 +00:00
Code Issues Projects Releases Wiki Activity

sched: Remove sched_switch

Browse source 
Currently we don't utilize the sched_switch field anymore.

But, simply removing sched_switch field from the middle of the
sched_stat output will break tools.

So, to stay compatible we hardcode it to zero and remove the
field from the scheduler data structures.

Update the schedstat documentation accordingly.

Signed-off-by: Rakib Mullick <rakib.mullick@gmail.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1327422836.27181.5.camel@localhost.localdomain
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Rakib Mullick 2012-01-24 22:33:56 +06:00 committed by Ingo Molnar
parent 4ec4412e1e
commit 30fd049afc
4 changed files with 4 additions and 5 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

3
Documentation/scheduler/sched-stats.txt
View file

@ -38,7 +38,8 @@ First field is a sched_yield() statistic:
1) # of times sched_yield() was called 1) # of times sched_yield() was called
Next three are schedule() statistics: Next three are schedule() statistics:
2) # of times we switched to the expired queue and reused it 2) This field is a legacy array expiration count field used in the O(1)
scheduler. We kept it for ABI compatibility, but it is always set to zero.
3) # of times schedule() was called 3) # of times schedule() was called
4) # of times schedule() left the processor idle 4) # of times schedule() left the processor idle

1
kernel/sched/debug.c
View file

@ -288,7 +288,6 @@ static void print_cpu(struct seq_file *m, int cpu)
P(yld_count); P(yld_count);
P(sched_switch);
P(sched_count); P(sched_count);
P(sched_goidle); P(sched_goidle);
#ifdef CONFIG_SMP #ifdef CONFIG_SMP

1
kernel/sched/sched.h
View file

@ -462,7 +462,6 @@ struct rq {
unsigned int yld_count; unsigned int yld_count;
/* schedule() stats */ /* schedule() stats */
unsigned int sched_switch;
unsigned int sched_count; unsigned int sched_count;
unsigned int sched_goidle; unsigned int sched_goidle;

4
kernel/sched/stats.c
View file

@ -32,9 +32,9 @@ static int show_schedstat(struct seq_file *seq, void *v)
/* runqueue-specific stats */ /* runqueue-specific stats */
seq_printf(seq, seq_printf(seq,
"cpu%d %u %u %u %u %u %u %llu %llu %lu", "cpu%d %u 0 %u %u %u %u %llu %llu %lu",
cpu, rq->yld_count, cpu, rq->yld_count,
rq->sched_switch, rq->sched_count, rq->sched_goidle, rq->sched_count, rq->sched_goidle,
rq->ttwu_count, rq->ttwu_local, rq->ttwu_count, rq->ttwu_local,
rq->rq_cpu_time, rq->rq_cpu_time,
rq->rq_sched_info.run_delay, rq->rq_sched_info.pcount); rq->rq_sched_info.run_delay, rq->rq_sched_info.pcount);