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4ff8f2ca6c
Remove all headers, except the ones required to make this header
build standalone.
Also include stats.h in sched.h explicitly - dependencies already
require this.
Summary of the build speedup gained through the last ~15 scheduler build &
header dependency patches:
Cumulative scheduler (kernel/sched/) build time speedup on a
Linux distribution's config, which enables all scheduler features,
compared to the vanilla kernel:
_____________________________________________________________________________
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| Vanilla kernel (v5.13-rc7):
|_____________________________________________________________________________
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| Performance counter stats for 'make -j96 kernel/sched/' (3 runs):
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| 126,975,564,374 instructions # 1.45 insn per cycle ( +- 0.00% )
| 87,637,847,671 cycles # 3.959 GHz ( +- 0.30% )
| 22,136.96 msec cpu-clock # 7.499 CPUs utilized ( +- 0.29% )
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| 2.9520 +- 0.0169 seconds time elapsed ( +- 0.57% )
|_____________________________________________________________________________
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| Patched kernel:
|_____________________________________________________________________________
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| Performance counter stats for 'make -j96 kernel/sched/' (3 runs):
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| 50,420,496,914 instructions # 1.47 insn per cycle ( +- 0.00% )
| 34,234,322,038 cycles # 3.946 GHz ( +- 0.31% )
| 8,675.81 msec cpu-clock # 3.053 CPUs utilized ( +- 0.45% )
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| 2.8420 +- 0.0181 seconds time elapsed ( +- 0.64% )
|_____________________________________________________________________________
Summary:
- CPU time used to build the scheduler dropped by -60.9%, a reduction
from 22.1 clock-seconds to 8.7 clock-seconds.
- Wall-clock time to build the scheduler dropped by -3.9%, a reduction
from 2.95 seconds to 2.84 seconds.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Reviewed-by: Peter Zijlstra <peterz@infradead.org>
110 lines
2.3 KiB
C
110 lines
2.3 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* These are various utility functions of the scheduler,
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* built in a single compilation unit for build efficiency reasons.
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*
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* ( Incidentally, the size of the compilation unit is roughly
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* comparable to core.c, fair.c, smp.c and policy.c, the other
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* big compilation units. This helps balance build time, while
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* coalescing source files to amortize header inclusion
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* cost. )
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*/
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#include <linux/sched/clock.h>
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#include <linux/sched/cputime.h>
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#include <linux/sched/debug.h>
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#include <linux/sched/isolation.h>
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#include <linux/sched/loadavg.h>
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#include <linux/sched/mm.h>
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#include <linux/sched/rseq_api.h>
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#include <linux/sched/task_stack.h>
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#include <linux/cpufreq.h>
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#include <linux/cpumask_api.h>
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#include <linux/cpuset.h>
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#include <linux/ctype.h>
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#include <linux/debugfs.h>
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#include <linux/energy_model.h>
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#include <linux/hashtable_api.h>
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#include <linux/irq.h>
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#include <linux/kobject_api.h>
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#include <linux/membarrier.h>
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#include <linux/mempolicy.h>
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#include <linux/nmi.h>
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#include <linux/nospec.h>
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#include <linux/proc_fs.h>
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#include <linux/psi.h>
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#include <linux/psi.h>
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#include <linux/ptrace_api.h>
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#include <linux/sched_clock.h>
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#include <linux/security.h>
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#include <linux/spinlock_api.h>
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#include <linux/swait_api.h>
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#include <linux/timex.h>
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#include <linux/utsname.h>
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#include <linux/wait_api.h>
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#include <linux/workqueue_api.h>
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#include <uapi/linux/prctl.h>
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#include <uapi/linux/sched/types.h>
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#include <asm/switch_to.h>
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#include "sched.h"
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#include "sched-pelt.h"
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#include "stats.h"
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#include "autogroup.h"
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#include "clock.c"
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#ifdef CONFIG_CGROUP_CPUACCT
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# include "cpuacct.c"
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#endif
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#ifdef CONFIG_CPU_FREQ
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# include "cpufreq.c"
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#endif
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#ifdef CONFIG_CPU_FREQ_GOV_SCHEDUTIL
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# include "cpufreq_schedutil.c"
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#endif
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#ifdef CONFIG_SCHED_DEBUG
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# include "debug.c"
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#endif
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#ifdef CONFIG_SCHEDSTATS
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# include "stats.c"
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#endif
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#include "loadavg.c"
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#include "completion.c"
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#include "swait.c"
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#include "wait_bit.c"
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#include "wait.c"
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#ifdef CONFIG_SMP
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# include "cpupri.c"
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# include "stop_task.c"
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# include "topology.c"
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#endif
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#ifdef CONFIG_SCHED_CORE
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# include "core_sched.c"
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#endif
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#ifdef CONFIG_PSI
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# include "psi.c"
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#endif
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#ifdef CONFIG_MEMBARRIER
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# include "membarrier.c"
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#endif
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#ifdef CONFIG_CPU_ISOLATION
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# include "isolation.c"
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#endif
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#ifdef CONFIG_SCHED_AUTOGROUP
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# include "autogroup.c"
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#endif
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