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ce7b8e55e3
freebsd-dev/sys/powerpc/include
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Justin Hibbits ce7b8e55e3 Stop idle threads on power9 in the idle task until an interrupt. 
This reduces the CPU cycle wastage on power9, which is SMT4.  Any idle
thread that's spinning is simply starving working threads on the same core
of valuable resources.

This can be reduced further by taking more advantage of the PSSCR supported
states, as well as permitting state loss, as is currently done for power8.
The currently implemented stop state is the lowest latency, which may still
consume resources.
2018-05-27 20:24:24 +00:00
..
_align.h spdx: initial adoption of licensing ID tags. 2017-11-18 14:26:50 +00:00
_bus.h sys/powerpc: further adoption of SPDX licensing ID tags. 2017-11-27 15:09:59 +00:00
_inttypes.h sys/powerpc: further adoption of SPDX licensing ID tags. 2017-11-27 15:09:59 +00:00
_limits.h sys: further adoption of SPDX licensing ID tags. 2017-11-20 19:43:44 +00:00
_stdint.h sys: further adoption of SPDX licensing ID tags. 2017-11-20 19:43:44 +00:00
_types.h Do not include float interfaces when using libsa. 2018-02-23 04:04:25 +00:00
altivec.h sys/powerpc: further adoption of SPDX licensing ID tags. 2017-11-27 15:09:59 +00:00
asm.h sys: further adoption of SPDX licensing ID tags. 2017-11-20 19:43:44 +00:00
atomic.h Add atomic_load(9) and atomic_store(9) operations. 2017-12-19 09:59:20 +00:00
bat.h sys/powerpc: further adoption of SPDX licensing ID tags. 2017-11-27 15:09:59 +00:00
bus_dma.h sys/powerpc: further adoption of SPDX licensing ID tags. 2017-11-27 15:09:59 +00:00
bus.h sys/powerpc: further adoption of SPDX licensing ID tags. 2017-11-27 15:09:59 +00:00
clock.h
counter.h sys/powerpc: further adoption of SPDX licensing ID tags. 2017-11-27 15:09:59 +00:00
cpu.h Add support for the XIVE XICS emulation mode for POWER9 systems 2018-05-20 03:23:17 +00:00
cpufunc.h sys/powerpc: further adoption of SPDX licensing ID tags. 2017-11-27 15:09:59 +00:00
db_machdep.h Fix PPC symbol resolution 2018-05-10 03:59:48 +00:00
dbdma.h sys/powerpc: further adoption of SPDX licensing ID tags. 2017-11-27 15:09:59 +00:00
dump.h
efi.h Fix building on i386 and arm. But 'public domain' headers on the files 2016-10-13 06:56:23 +00:00
elf.h sys/powerpc: further adoption of SPDX licensing ID tags. 2017-11-27 15:09:59 +00:00
endian.h sys: further adoption of SPDX licensing ID tags. 2017-11-20 19:43:44 +00:00
exec.h sys: further adoption of SPDX licensing ID tags. 2017-11-20 19:43:44 +00:00
float.h sys: further adoption of SPDX licensing ID tags. 2017-11-20 19:43:44 +00:00
floatingpoint.h sys: further adoption of SPDX licensing ID tags. 2017-11-20 19:43:44 +00:00
fpu.h sys: further adoption of SPDX licensing ID tags. 2017-11-20 19:43:44 +00:00
frame.h sys: further adoption of SPDX licensing ID tags. 2017-11-20 19:43:44 +00:00
gdb_machdep.h amd64: Protect the kernel text, data, and BSS by setting the RW/NX bits 2018-03-06 14:28:37 +00:00
hid.h On POWER9 clear the HID0_RADIX before enabling the page tables 2018-05-26 04:33:19 +00:00
ieee.h sys: further adoption of SPDX licensing ID tags. 2017-11-20 19:43:44 +00:00
ieeefp.h
in_cksum.h sys: further adoption of SPDX licensing ID tags. 2017-11-20 19:43:44 +00:00
intr_machdep.h sys/powerpc: further adoption of SPDX licensing ID tags. 2017-11-27 15:09:59 +00:00
kdb.h sys/powerpc: further adoption of SPDX licensing ID tags. 2017-11-27 15:09:59 +00:00
limits.h sys: further adoption of SPDX licensing ID tags. 2017-11-20 19:43:44 +00:00
machdep.h sys/powerpc: further adoption of SPDX licensing ID tags. 2017-11-27 15:09:59 +00:00
md_var.h Break out the cpu_features setup to its own function, to be run earlier 2018-05-05 15:48:39 +00:00
memdev.h sys/powerpc: further adoption of SPDX licensing ID tags. 2017-11-27 15:09:59 +00:00
metadata.h sys/powerpc: further adoption of SPDX licensing ID tags. 2017-11-27 15:09:59 +00:00
mmuvar.h sys/powerpc: further adoption of SPDX licensing ID tags. 2017-11-27 15:09:59 +00:00
ofw_machdep.h sys/powerpc: further adoption of SPDX licensing ID tags. 2017-11-27 15:09:59 +00:00
openpicreg.h sys/powerpc: further adoption of SPDX licensing ID tags. 2017-11-27 15:09:59 +00:00
openpicvar.h sys/powerpc: further adoption of SPDX licensing ID tags. 2017-11-27 15:09:59 +00:00
param.h spdx: initial adoption of licensing ID tags. 2017-11-18 14:26:50 +00:00
pcb.h powerpc64: Add DSCR support 2018-04-20 03:19:44 +00:00
pcpu.h Merge AIM and Book-E PCPU fields 2018-02-17 20:59:12 +00:00
pio.h sys: further adoption of SPDX licensing ID tags. 2017-11-20 19:43:44 +00:00
platform.h Remove platform_cpu_idle() and platform_cpu_idle_wakeup() interfaces 2018-02-24 01:46:56 +00:00
platformvar.h sys/powerpc: further adoption of SPDX licensing ID tags. 2017-11-27 15:09:59 +00:00
pmap.h Remove hard-coded trap-handling logic involving the segmented memory model 2018-01-29 04:33:41 +00:00
pmc_mdep.h
proc.h sys: further adoption of SPDX licensing ID tags. 2017-11-20 19:43:44 +00:00
profile.h SPDX: Consider code from Carnegie-Mellon University. 2017-11-30 15:48:35 +00:00
psl.h Change the default MSR values used when starting userland and kernel 2018-02-01 05:31:24 +00:00
pte.h Add support for powernv POWER9 MMU initialization 2018-05-05 16:00:02 +00:00
ptrace.h sys: further adoption of SPDX licensing ID tags. 2017-11-20 19:43:44 +00:00
reg.h Move most of the contents of opt_compat.h to opt_global.h. 2018-04-06 17:35:35 +00:00
reloc.h sys: further adoption of SPDX licensing ID tags. 2017-11-20 19:43:44 +00:00
resource.h
rtas.h sys/powerpc: further adoption of SPDX licensing ID tags. 2017-11-27 15:09:59 +00:00
runq.h sys/powerpc: further adoption of SPDX licensing ID tags. 2017-11-27 15:09:59 +00:00
sc_machdep.h sys/powerpc: further adoption of SPDX licensing ID tags. 2017-11-27 15:09:59 +00:00
setjmp.h
sigframe.h sys: further adoption of SPDX licensing ID tags. 2017-11-20 19:43:44 +00:00
signal.h sys: further adoption of SPDX licensing ID tags. 2017-11-20 19:43:44 +00:00
slb.h sys/powerpc: further adoption of SPDX licensing ID tags. 2017-11-27 15:09:59 +00:00
smp.h sys/powerpc: further adoption of SPDX licensing ID tags. 2017-11-27 15:09:59 +00:00
spr.h Stop idle threads on power9 in the idle task until an interrupt. 2018-05-27 20:24:24 +00:00
sr.h Move the powerpc64 direct map base address from zero to high memory. This 2018-03-07 17:08:07 +00:00
stack.h
stdarg.h Use standard pattern for stdargs.h 2018-02-12 14:48:05 +00:00
sysarch.h sys: further adoption of SPDX licensing ID tags. 2017-11-20 19:43:44 +00:00
tlb.h sys: further adoption of SPDX licensing ID tags. 2017-11-20 19:43:44 +00:00
trap.h Add some Hypervisor interrupt definitions 2018-05-19 03:23:46 +00:00
ucontext.h sys: further adoption of SPDX licensing ID tags. 2017-11-20 19:43:44 +00:00
vdso.h sys/powerpc: further adoption of SPDX licensing ID tags. 2017-11-27 15:09:59 +00:00
vm.h sys/powerpc: further adoption of SPDX licensing ID tags. 2017-11-27 15:09:59 +00:00
vmparam.h Add support for a pmap direct map for 64-bit Book-E 2018-04-03 00:45:38 +00:00