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linux/arch/mips/kernel
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Paul Burton 1d8f1f5a78 MIPS: smp-cps: hotplug support 
This patch adds support for offlining CPUs via hotplug when using the
CONFIG_MIPS_CPS SMP implementation. When a CPU is offlined one of 2
things will happen:

  - If the CPU is part of a core which implements the MT ASE and there
    is at least one other VPE online within that core then the VPE will
    be halted by settings its TCHalt bit.

  - Otherwise if supported the core will be powered down via the CPC.

  - Otherwise the CPU will hang by executing an infinite loop.

Bringing CPUs back online is then a process of either clearing the
appropriate VPEs TCHalt bit or powering up the appropriate core via the
CPC. Throughout the process the struct core_boot_config vpe_mask field
must be maintained such that mips_cps_boot_vpes will start & stop the
correct VPEs.

Signed-off-by: Paul Burton <paul.burton@imgtec.com>
2014-05-28 16:20:31 +01:00
..
.gitignore
8250-platform.c mips: remove needless include of module.h from core kernel files. 2011-10-31 19:30:57 -04:00
asm-offsets.c MIPS: smp-cps: rework core/VPE initialisation 2014-05-28 16:20:28 +01:00
binfmt_elfn32.c MIPS: Compat: Fix cputime_to_timeval() arguments in compat binfmt_elf. 2013-06-06 16:11:26 +02:00
binfmt_elfo32.c MIPS: Support for 64-bit FP with O32 binaries 2014-01-13 23:40:56 +01:00
bmips_vec.S MIPS: Fix gigaton of warning building with microMIPS. 2014-03-31 18:17:12 +02:00
branch.c MIPS: Cleanup indentation and whitespace 2013-07-01 15:10:57 +02:00
cevt-bcm1480.c MIPS: Delete __cpuinit/__CPUINIT usage from MIPS code 2013-07-14 19:36:51 -04:00
cevt-ds1287.c MIPS: Whitespace cleanup. 2013-02-01 10:00:22 +01:00
cevt-gic.c MIPS: allow GIC clockevent device config from other CPUs 2014-05-02 16:39:11 +01:00
cevt-gt641xx.c MIPS: Whitespace cleanup. 2013-02-01 10:00:22 +01:00
cevt-r4k.c MIPS: allow R4K clockevent device to function regardless of GIC 2014-05-02 16:39:12 +01:00
cevt-sb1250.c MIPS: Delete __cpuinit/__CPUINIT usage from MIPS code 2013-07-14 19:36:51 -04:00
cevt-smtc.c MIPS: Delete __cpuinit/__CPUINIT usage from MIPS code 2013-07-14 19:36:51 -04:00
cevt-txx9.c MIPS: Whitespace cleanup. 2013-02-01 10:00:22 +01:00
cps-vec.S MIPS: pm-cps: add PM state entry code for CPS systems 2014-05-28 16:20:31 +01:00
cpu-bugs64.c MIPS: Delete __cpuinit/__CPUINIT usage from MIPS code 2013-07-14 19:36:51 -04:00
cpu-probe.c MIPS: Fix core number detection for MT cores 2014-03-31 18:17:12 +02:00
crash_dump.c mips: remove savemaxmem parameter setup 2013-07-03 16:08:03 -07:00
crash.c mips: delete non-required instances of include <linux/init.h> 2014-01-24 22:39:56 +01:00
csrc-bcm1480.c MIPS: Whitespace cleanup. 2013-02-01 10:00:22 +01:00
csrc-gic.c MIPS: Refactor GIC clocksource code. 2013-05-09 17:55:20 +02:00
csrc-ioasic.c MIPS: DECstation HRT initialization rearrangement 2013-09-13 11:56:13 +02:00
csrc-r4k.c
csrc-sb1250.c MIPS: Whitespace cleanup. 2013-02-01 10:00:22 +01:00
early_printk_8250.c MIPS: Add 8250/16550 serial early printk driver 2013-10-29 21:24:36 +01:00
early_printk.c early_printk: consolidate random copies of identical code 2013-04-29 18:28:13 -07:00
entry.S Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal 2012-12-12 12:22:13 -08:00
ftrace.c Most of the changes were largely clean ups, and some documentation. 2014-04-03 10:26:31 -07:00
genex.S MIPS: Fix gigaton of warning building with microMIPS. 2014-03-31 18:17:12 +02:00
gpio_txx9.c
head.S MIPS: malta: Add support for SMP EVA 2014-03-26 23:09:20 +01:00
i8253.c MIPS: irq: Remove IRQF_DISABLED 2011-12-07 22:03:45 +00:00
i8259.c MIPS: Whitespace cleanup. 2013-02-01 10:00:22 +01:00
idle.c MIPS: Fix gigaton of warning building with microMIPS. 2014-03-31 18:17:12 +02:00
irq_cpu.c MIPS: Panic messages should not end in \n. 2013-10-29 21:24:19 +01:00
irq_txx9.c MIPS: Whitespace cleanup. 2013-02-01 10:00:22 +01:00
irq-gic.c MIPS: allow GIC clockevent device config from other CPUs 2014-05-02 16:39:11 +01:00
irq-gt641xx.c MIPS: Whitespace cleanup. 2013-02-01 10:00:22 +01:00
irq-msc01.c MIPS: Whitespace cleanup. 2013-02-01 10:00:22 +01:00
irq-rm7000.c MIPS: Whitespace cleanup. 2013-02-01 10:00:22 +01:00
irq.c MIPS: Whitespace cleanup. 2013-02-01 10:00:22 +01:00
jump_label.c
kgdb.c MIPS: kernel: {ftrace,kgdb}: Set correct address limit for cache flushes 2014-03-26 23:09:18 +01:00
kprobes.c kprobes/mips: Fix to check double free of insn slot 2013-05-22 12:48:30 +02:00
linux32.c unify compat fanotify_mark(2), switch to COMPAT_SYSCALL_DEFINE 2013-05-09 13:46:38 -04:00
machine_kexec.c MIPS: kdump: Add support 2012-12-13 16:46:47 +01:00
Makefile MIPS: pm-cps: add PM state entry code for CPS systems 2014-05-28 16:20:31 +01:00
mcount.S MIPS: Ftrace: Fix function tracing return address to match 2013-09-03 14:46:27 +02:00
mips_ksyms.c MIPS: checksum: Split the 'copy_user' symbol 2014-03-26 23:09:17 +01:00
mips_machine.c MIPS: move mips_{set,get}_machine_name() to a more generic place 2013-05-08 01:19:07 +02:00
mips-cm.c MIPS: Add generic CM probe & access code 2014-03-06 21:25:22 +01:00
mips-cpc.c MIPS: smp-cps: rework core/VPE initialisation 2014-05-28 16:20:28 +01:00
mips-mt-fpaff.c sched: Rename sched.c as sched/core.c in comments and Documentation 2013-06-19 12:58:42 +02:00
mips-mt.c Merge branch 'master' into for-next 2012-04-08 21:48:52 +02:00
module-rela.c MIPS: Whitespace cleanup. 2013-02-01 10:00:22 +01:00
module.c MIPS: Use NUMA_NO_NODE instead of -1 for node ID. 2013-10-29 21:24:14 +01:00
octeon_switch.S MIPS: stack protector: Fix per-task canary switch 2013-10-07 15:31:04 +02:00
perf_event_mipsxx.c MIPS: perf: Add interAptiv support 2014-03-31 18:17:12 +02:00
perf_event.c MIPS: perf: Reorganize contents of perf support files. 2011-10-24 23:34:26 +01:00
pm-cps.c MIPS: pm-cps: add PM state entry code for CPS systems 2014-05-28 16:20:31 +01:00
pm.c MIPS: PM: Implement PM helper macros 2014-05-02 16:39:10 +01:00
proc.c MIPS: MT: proc: Add support for printing VPE and TC ids 2014-03-31 18:17:12 +02:00
process.c MIPS: Basic MSA context switching support 2014-03-26 23:09:10 +01:00
prom.c mips: use common of_flat_dt_get_machine_name 2013-10-09 20:03:57 -05:00
ptrace32.c MIPS: Simplify PTRACE_PEEKUSR for FPC_EIR 2014-03-31 18:17:12 +02:00
ptrace.c Merge git://git.infradead.org/users/eparis/audit 2014-04-12 12:38:53 -07:00
r4k_fpu.S Merge branch '3.14-fixes' into mips-for-linux-next 2014-03-31 18:17:33 +02:00
r4k_switch.S MIPS: Fix gigaton of warning building with microMIPS. 2014-03-31 18:17:12 +02:00
r2300_fpu.S MIPS: Whitespace cleanup. 2013-02-01 10:00:22 +01:00
r2300_switch.S MIPS: stack protector: Fix per-task canary switch 2013-10-07 15:31:04 +02:00
r6000_fpu.S update David Miller's old email address 2011-04-06 06:19:38 -07:00
relocate_kernel.S MIPS: kdump: Skip walking indirection page for crashkernels 2013-09-05 20:53:37 +02:00
reset.c mips: migrate core kernel file from module.h --> export.h 2011-10-31 19:30:56 -04:00
rtlx-cmp.c MIPS: APRP: Unregister rtlx interrupt hook at module exit 2014-03-06 20:55:07 +01:00
rtlx-mt.c MIPS: APRP: Unregister rtlx interrupt hook at module exit 2014-03-06 20:55:07 +01:00
rtlx.c MIPS: APRP: Code formatting clean-ups. 2014-01-22 20:19:02 +01:00
scall32-o32.S MIPS: kernel: scall32-o32: Use EVA wrappers to fetch syscall arguments 2014-03-26 23:09:13 +01:00
scall64-64.S MIPS: seccomp: Handle indirect system calls (o32) 2014-03-26 23:09:08 +01:00
scall64-n32.S MIPS: seccomp: Handle indirect system calls (o32) 2014-03-26 23:09:08 +01:00
scall64-o32.S MIPS: seccomp: Handle indirect system calls (o32) 2014-03-26 23:09:08 +01:00
segment.c MIPS: Add debugfs file to print the segmentation control registers 2014-01-22 20:19:00 +01:00
setup.c MIPS: Fix start of free memory when using initrd 2013-10-29 21:24:23 +01:00
signal32.c MIPS: Save/restore MSA context around signals 2014-03-26 23:09:11 +01:00
signal_n32.c Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus 2013-03-02 07:44:16 -08:00
signal-common.h most of set_current_blocked() callers want SIGKILL/SIGSTOP removed from set 2012-06-01 12:58:51 -04:00
signal.c MIPS: kernel: signal: Prevent save/restore FPU context in user memory 2014-03-26 23:09:17 +01:00
smp-bmips.c MIPS: BMIPS: change compile time checks to runtime checks 2014-01-22 20:18:51 +01:00
smp-cmp.c MIPS: smp-cmp: Remove incorrect core number probe 2014-03-31 18:17:12 +02:00
smp-cps.c MIPS: smp-cps: hotplug support 2014-05-28 16:20:31 +01:00
smp-gic.c MIPS: Move GIC IPI functions out of smp-cmp.c 2014-03-06 21:25:22 +01:00
smp-mt.c MIPS: smp-mt: Use common GIC IPI implementation 2014-03-31 18:17:12 +02:00
smp-up.c MIPS: Delete __cpuinit/__CPUINIT usage from MIPS code 2013-07-14 19:36:51 -04:00
smp.c MIPS: introduce cpu_coherent_mask 2014-05-02 16:39:13 +01:00
smtc-asm.S MIPS: microMIPS: Add support for exception handling. 2013-05-09 17:55:18 +02:00
smtc-proc.c MIPS: MT: proc: Add support for printing VPE and TC ids 2014-03-31 18:17:12 +02:00
smtc.c mips: Use the core irq stats function 2014-03-04 17:37:53 +01:00
spinlock_test.c mips: migrate core kernel file from module.h --> export.h 2011-10-31 19:30:56 -04:00
spram.c MIPS: Use current_cpu_type() instead of c->cputype 2014-03-31 18:17:12 +02:00
stacktrace.c mips: migrate core kernel file from module.h --> export.h 2011-10-31 19:30:56 -04:00
sync-r4k.c mips: delete non-required instances of include <linux/init.h> 2014-01-24 22:39:56 +01:00
syscall.c MIPS: Fix gigaton of warning building with microMIPS. 2014-03-31 18:17:12 +02:00
time.c MIPS: Optimize current_cpu_type() for better code. 2013-09-17 18:50:53 +02:00
topology.c
traps.c MIPS: traps: Add CPU PM callback for trap configuration 2014-05-02 16:38:59 +01:00
unaligned.c MIPS: kernel: unaligned: Handle unaligned accesses for EVA 2014-03-26 23:09:16 +01:00
vdso.c coredump: remove VM_ALWAYSDUMP flag 2012-03-23 16:58:42 -07:00
vmlinux.lds.S MIPS: Discard .eh_frame sections in linker script. 2013-08-26 15:33:41 +02:00
vpe-cmp.c MIPS: APRP: Add VPE loader support for CMP platforms. 2014-01-22 20:19:02 +01:00
vpe-mt.c MIPS: APRP: Code formatting clean-ups. 2014-01-22 20:19:02 +01:00
vpe.c Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus 2014-01-30 17:20:32 -08:00
watch.c MIPS: Delete __cpuinit/__CPUINIT usage from MIPS code 2013-07-14 19:36:51 -04:00