linux_dsm_epyc7002/include/linux/sched
Vincent Guittot 765d0af19f sched/topology: Remove the ::smt_gain field from 'struct sched_domain'
::smt_gain is used to compute the capacity of CPUs of a SMT core with the
constraint 1 < ::smt_gain < 2 in order to be able to compute number of CPUs
per core. The field has_free_capacity of struct numa_stat, which was the
last user of this computation of number of CPUs per core, has been removed
by:

  2d4056fafa ("sched/numa: Remove numa_has_capacity()")

We can now remove this constraint on core capacity and use the defautl value
SCHED_CAPACITY_SCALE for SMT CPUs. With this remove, SCHED_CAPACITY_SCALE
becomes the maximum compute capacity of CPUs on every systems. This should
help to simplify some code and remove fields like rd->max_cpu_capacity

Furthermore, arch_scale_cpu_capacity() is used with a NULL sd in several other
places in the code when it wants the capacity of a CPUs to scale
some metrics like in pelt, deadline or schedutil. In case on SMT, the value
returned is not the capacity of SMT CPUs but default SCHED_CAPACITY_SCALE.

So remove it.

Signed-off-by: Vincent Guittot <vincent.guittot@linaro.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/1535548752-4434-4-git-send-email-vincent.guittot@linaro.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2018-12-11 15:16:57 +01:00
..
autogroup.h
clock.h
coredump.h
cpufreq.h
cputime.h
deadline.h
debug.h
hotplug.h
idle.h
init.h
isolation.h sched: Fix various typos in comments 2018-12-03 11:55:42 +01:00
jobctl.h
loadavg.h sched: loadavg: make calc_load_n() public 2018-10-26 16:26:32 -07:00
mm.h sched: Fix various typos in comments 2018-12-03 11:55:42 +01:00
nohz.h
numa_balancing.h
prio.h
rt.h
signal.h signal: Distinguish between kernel_siginfo and siginfo 2018-10-03 16:47:43 +02:00
smt.h x86/speculation: Rework SMT state change 2018-11-28 11:57:07 +01:00
stat.h sched: Fix various typos in comments 2018-12-03 11:55:42 +01:00
sysctl.h kernel/hung_task.c: allow to set checking interval separately from timeout 2018-08-22 10:52:47 -07:00
task_stack.h
task.h alpha: fix osf_wait4() breakage 2018-07-22 11:51:30 -07:00
topology.h sched/topology: Remove the ::smt_gain field from 'struct sched_domain' 2018-12-11 15:16:57 +01:00
user.h userns: use refcount_t for reference counting instead atomic_t 2018-08-22 10:52:46 -07:00
wake_q.h
xacct.h