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android_kernel_xiaomi_sm8350/arch/i386/kernel
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Ingo Molnar 0437e109e1 sched: zap the migration init / cache-hot balancing code 
the SMP load-balancer uses the boot-time migration-cost estimation
code to attempt to improve the quality of balancing. The reason for
this code is that the discrete priority queues do not preserve
the order of scheduling accurately, so the load-balancer skips
tasks that were running on a CPU 'recently'.

this code is fundamental fragile: the boot-time migration cost detector
doesnt really work on systems that had large L3 caches, it caused boot
delays on large systems and the whole cache-hot concept made the
balancing code pretty undeterministic as well.

(and hey, i wrote most of it, so i can say it out loud that it sucks ;-)

under CFS the same purpose of cache affinity can be achieved without
any special cache-hot special-case: tasks are sorted in the 'timeline'
tree and the SMP balancer picks tasks from the left side of the
tree, thus the most cache-cold task is balanced automatically.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
2007-07-09 18:51:57 +02:00
..
acpi Remove some unused variables 2007-07-03 18:27:53 -07:00
cpu MTRR: Fix race causing set_mtrr to go into infinite loop 2007-07-06 10:23:43 -07:00
.gitignore
alternative.c Revert "[PATCH] x86: __pa and __pa_symbol address space separation" 2007-05-07 08:44:24 -07:00
apic.c header cleaning: don't include smp_lock.h when not used 2007-05-08 11:15:07 -07:00
apm.c apm: fix incorrect comment 2007-05-08 11:15:10 -07:00
asm-offsets.c [PATCH] i386: map enough initial memory to create lowmem mappings 2007-05-02 19:27:16 +02:00
bootflag.c
cpuid.c Add suspend-related notifications for CPU hotplug 2007-05-09 12:30:56 -07:00
crash_dump.c
crash.c move die notifier handling to common code 2007-05-08 11:15:04 -07:00
doublefault.c [PATCH] i386: i386 separate hardware-defined TSS from Linux additions 2007-05-02 19:27:13 +02:00
e820.c [PATCH] i386: Drop noisy e820 debugging printks 2007-05-02 19:27:21 +02:00
early_printk.c
efi_stub.S
efi.c EFI: warn only for pre-1.00 system tables 2007-05-08 11:15:10 -07:00
entry.S i386: fix regression, endless loop in ptrace singlestep over an int80 2007-07-06 10:23:43 -07:00
head.S Revert "[PATCH] paravirt: Add startup infrastructure for paravirtualization" 2007-05-10 09:26:53 -07:00
hpet.c
i386_ksyms.c [PATCH] i386: Convert PDA into the percpu section 2007-05-02 19:27:16 +02:00
i387.c
i8237.c
i8253.c
i8259.c header cleaning: don't include smp_lock.h when not used 2007-05-08 11:15:07 -07:00
init_task.c
io_apic.c header cleaning: don't include smp_lock.h when not used 2007-05-08 11:15:07 -07:00
ioport.c header cleaning: don't include smp_lock.h when not used 2007-05-08 11:15:07 -07:00
irq.c [PATCH] i386: Convert PDA into the percpu section 2007-05-02 19:27:16 +02:00
kprobes.c Kprobes: The ON/OFF knob thru debugfs 2007-05-08 11:15:19 -07:00
ldt.c header cleaning: don't include smp_lock.h when not used 2007-05-08 11:15:07 -07:00
legacy_serial.c x86, serial: convert legacy COM ports to platform devices 2007-05-08 11:15:23 -07:00
machine_kexec.c
Makefile i386: move common parts of smp into their own file 2007-05-15 08:54:00 -07:00
mca.c
microcode.c microcode: fix section mismatch warning 2007-06-01 08:18:30 -07:00
module.c
mpparse.c header cleaning: don't include smp_lock.h when not used 2007-05-08 11:15:07 -07:00
msr.c Add suspend-related notifications for CPU hotplug 2007-05-09 12:30:56 -07:00
nmi.c move die notifier handling to common code 2007-05-08 11:15:04 -07:00
numaq.c
paravirt.c Revert "[PATCH] paravirt: Add startup infrastructure for paravirtualization" 2007-05-10 09:26:53 -07:00
pci-dma.c x86: Disable DAC on VIA bridges 2007-06-20 14:27:25 -07:00
pcspeaker.c
process.c SLUB: i386 support 2007-05-12 11:26:22 -07:00
ptrace.c header cleaning: don't include smp_lock.h when not used 2007-05-08 11:15:07 -07:00
quirks.c Clean up E7520/7320/7525 quirk printk. 2007-07-07 13:53:13 -07:00
reboot_fixups.c GEODE: reboot fixup for geode machines with CS5536 boards 2007-07-06 11:45:11 -07:00
reboot.c Work around Dell E520 BIOS reboot bug 2007-06-01 08:18:28 -07:00
relocate_kernel.S
scx200.c
setup.c
sigframe.h
signal.c header cleaning: don't include smp_lock.h when not used 2007-05-08 11:15:07 -07:00
smp.c i386: don't check_pgt_cache in flush_tlb_mm 2007-05-17 05:23:05 -07:00
smpboot.c sched: zap the migration init / cache-hot balancing code 2007-07-09 18:51:57 +02:00
smpcommon.c i386: move common parts of smp into their own file 2007-05-15 08:54:00 -07:00
srat.c
summit.c
sys_i386.c header cleaning: don't include smp_lock.h when not used 2007-05-08 11:15:07 -07:00
syscall_table.S signal/timer/event: eventfd wire up x86 arches 2007-05-11 08:29:37 -07:00
sysenter.c [PATCH] i386: In compat mode, the return value here was uninitialized. 2007-05-02 19:27:16 +02:00
time.c
topology.c
trampoline.S [PATCH] i386: Rename boot_gdt_table to boot_gdt 2007-05-02 19:27:10 +02:00
traps.c Revert "ipmi: add new IPMI nmi watchdog handling" 2007-05-14 15:24:24 -07:00
tsc_sync.c
tsc.c [PATCH] i386: remove xtime_lock'ing around cpufreq notifier 2007-05-02 19:27:18 +02:00
verify_cpu.S i386: Enable CX8/PGE CPUID bits early on VIA C3 2007-05-21 09:56:57 -07:00
vm86.c header cleaning: don't include smp_lock.h when not used 2007-05-08 11:15:07 -07:00
vmi.c Fix vmi.c compilation 2007-06-01 08:18:27 -07:00
vmiclock.c [PATCH] i386: Convert VMI timer to use clock events 2007-05-02 19:27:16 +02:00
vmlinux.lds.S all-archs: consolidate .data section definition in asm-generic 2007-05-19 09:11:57 +02:00
vsyscall-int80.S
vsyscall-note.S
vsyscall-sigreturn.S
vsyscall-sysenter.S
vsyscall.lds.S [PATCH] i386: VDSO_PRELINK warning fix 2007-05-02 19:27:09 +02:00
vsyscall.S