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e060f6ed28
kernel_optimize_test/arch/mips/kernel
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Paul Burton e060f6ed28 MIPS: Initialise MAARs on secondary CPUs 
MAARs should be initialised on each CPU (or rather, core) in the system
in order to achieve consistent behaviour & performance. Previously they
have only been initialised on the boot CPU which leads to performance
problems if tasks are later scheduled on a secondary CPU, particularly
if those tasks make use of unaligned vector accesses where some CPUs
don't handle any cases in hardware for non-speculative memory regions.
Fix this by recording the MAAR configuration from the boot CPU and
applying it to secondary CPUs as part of their bringup.

Reported-by: Doug Gilmore <doug.gilmore@imgtec.com>
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: linux-mips@linux-mips.org
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: Steven J. Hill <Steven.Hill@imgtec.com>
Cc: Andrew Bresticker <abrestic@chromium.org>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: David Hildenbrand <dahi@linux.vnet.ibm.com>
Cc: linux-kernel@vger.kernel.org
Cc: Aaro Koskinen <aaro.koskinen@iki.fi>
Cc: James Hogan <james.hogan@imgtec.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Markos Chandras <markos.chandras@imgtec.com>
Cc: Hemmo Nieminen <hemmo.nieminen@iki.fi>
Cc: Alex Smith <alex.smith@imgtec.com>
Cc: Peter Zijlstra (Intel) <peterz@infradead.org>
Patchwork: https://patchwork.linux-mips.org/patch/11239/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2015-09-27 14:15:26 +02:00
..
.gitignore
8250-platform.c
asm-offsets.c MIPS: Set trap_no field in thread_struct on exception. 2015-09-03 12:08:04 +02:00
binfmt_elfn32.c
binfmt_elfo32.c
bmips_vec.S
branch.c MIPS: Fix branch emulation for BLTC and BGEC instructions 2015-07-09 11:10:40 +02:00
cevt-bcm1480.c MIPS: cevt-bcm1480: Migrate to new 'set-state' interface 2015-09-03 12:07:51 +02:00
cevt-ds1287.c MIPS: cevt-ds1287: Migrate to new 'set-state' interface 2015-09-03 12:07:51 +02:00
cevt-gt641xx.c MIPS: cevt-gt641xx: Migrate to new 'set-state' interface 2015-09-03 12:07:51 +02:00
cevt-r4k.c MIPS: cevt-r4k: Migrate to new 'set-state' interface 2015-09-03 12:07:52 +02:00
cevt-sb1250.c MIPS: cevt-sb1250: Migrate to new 'set-state' interface 2015-09-03 12:07:52 +02:00
cevt-txx9.c MIPS: cevt-txx9: Migrate to new 'set-state' interface 2015-09-03 12:07:53 +02:00
cps-vec.S MIPS: CPS: use 32b accesses to GCRs 2015-08-28 11:48:22 +02:00
cpu-bugs64.c MIPS: kernel: cpu-bugs64: Do not check R6 cores for existing 64-bit bugs 2015-02-17 15:37:24 +00:00
cpu-probe.c MIPS: Fix FTLB detection for R6 2015-09-22 21:11:39 +02:00
crash_dump.c
crash.c mips: fix up obsolete cpu function usage. 2015-03-05 15:25:06 +10:30
csrc-bcm1480.c MIPS: csrc-bcm1480: Implement read_sched_clock 2015-04-01 17:21:27 +02:00
csrc-ioasic.c MIPS: csrc-ioasic: Implement read_sched_clock 2015-04-01 17:21:28 +02:00
csrc-r4k.c MIPS: csrc-r4k: Implement read_sched_clock 2015-04-01 17:21:27 +02:00
csrc-sb1250.c MIPS: csrc-sb1250: Implement read_sched_clock 2015-04-01 17:21:33 +02:00
early_printk_8250.c
early_printk.c
elf.c MIPS: fix FP mode selection in lieu of .MIPS.abiflags data 2015-05-12 18:54:05 +02:00
entry.S MIPS: kernel: entry.S: Set correct ISA level for mips_ihb 2015-04-10 15:41:46 +02:00
ftrace.c
genex.S MIPS: Fix LLVM build issue. 2015-08-18 11:40:20 +02:00
gpio_txx9.c
head.S MIPS: Add support for vmlinux.bin appended dtb 2015-06-21 21:54:14 +02:00
i8253.c
idle.c MIPS: Add cases for CPU_I6400 2015-08-26 15:23:03 +02:00
irq_txx9.c
irq-gt641xx.c
irq-msc01.c
irq-rm7000.c
irq.c MIPS: IRQ/IP27: Move IRQ allocation API to platform code. 2015-06-21 21:54:31 +02:00
jump_label.c jump_label: Rename JUMP_LABEL_{EN,DIS}ABLE to JUMP_LABEL_{JMP,NOP} 2015-08-03 11:34:12 +02:00
kgdb.c MIPS: Get rid of 'kgdb_early_setup' cruft. 2015-06-21 21:54:10 +02:00
kprobes.c
linux32.c
machine_kexec.c
Makefile Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus 2015-09-03 16:55:55 -07:00
mcount.S
mips_ksyms.c Merge branch 'mipsr6-for-3.20' of git://git.linux-mips.org/pub/scm/mchandras/linux into mips-for-linux-next 2015-02-19 16:00:34 +01:00
mips_machine.c
mips-cm.c MIPS: CM: Add support for reporting CM cache errors 2015-08-26 15:23:15 +02:00
mips-cpc.c MIPS: CPC: Remove "weak" from mips_cpc_phys_base() and make it static 2015-08-26 15:23:37 +02:00
mips-mt-fpaff.c MIPS: Fix sched_getaffinity with MT FPAFF enabled 2015-08-03 09:25:02 +02:00
mips-mt.c
mips-r2-to-r6-emul.c MIPS: Set `si_code' for SIGFPE signals sent from emulation too 2015-04-08 01:10:19 +02:00
module-rela.c
module.c mm: vmalloc: pass additional vm_flags to __vmalloc_node_range() 2015-02-13 21:21:42 -08:00
octeon_switch.S MIPS: OCTEON: Delete unused COP2 saving code 2015-02-20 15:30:23 +01:00
perf_event_mipsxx.c MIPS: Add cases for CPU_I6400 2015-08-26 15:23:03 +02:00
perf_event.c
pm-cps.c MIPS: Add cases for CPU_I6400 2015-08-26 15:23:03 +02:00
pm.c
proc.c MIPS: Add support for XPA. 2015-03-19 17:39:49 +01:00
process.c This is the final removal (after several years!) of the obsolete cpus_* 2015-04-20 10:19:03 -07:00
prom.c MIPS: Fix build with CONFIG_OF=y for non OF-enabled targets 2015-08-03 09:25:00 +02:00
ptrace.c MIPS: Add uprobes support. 2015-09-03 12:08:05 +02:00
ptrace32.c
r4k_fpu.S MIPS: Save MSA extended context around signals 2015-09-03 12:07:59 +02:00
r4k_switch.S MIPS: Tidy up FPU context switching 2015-09-03 12:08:05 +02:00
r2300_fpu.S
r2300_switch.S MIPS: Respect the ISA level in FCSR handling 2015-04-08 01:10:37 +02:00
r6000_fpu.S
relocate_kernel.S MIPS: Replace add and sub instructions in relocate_kernel.S with addiu 2015-08-03 15:26:30 +02:00
reset.c MIPS: Provide fallback reboot/poweroff/halt implementations 2015-04-01 17:21:58 +02:00
rtlx-cmp.c
rtlx-mt.c
rtlx.c
scall32-o32.S MIPS: O32: Do not handle require 32 bytes from the stack to be readable. 2015-07-08 05:03:30 +02:00
scall64-64.S MIPS: Fix seccomp syscall argument for MIPS64 2015-08-16 15:00:59 +02:00
scall64-n32.S MIPS: Fix seccomp syscall argument for MIPS64 2015-08-16 15:00:59 +02:00
scall64-o32.S MIPS: O32: Use compat_sys_getsockopt. 2015-07-10 11:02:22 +02:00
segment.c
setup.c MIPS: bootmem: Fix mapstart calculation for contiguous maps 2015-09-22 17:25:33 +02:00
signal_n32.c MIPS: Add offsets to sigcontext FP fields to struct mips_abi 2015-09-03 12:07:55 +02:00
signal-common.h MIPS: Save MSA extended context around signals 2015-09-03 12:07:59 +02:00
signal.c MIPS: Add uprobes support. 2015-09-03 12:08:05 +02:00
signal32.c MIPS: Remove unused {get,put}_sigset functions 2015-09-03 12:07:56 +02:00
smp-bmips.c MIPS: SMP: Don't increment irq_count multiple times for call function IPIs 2015-08-03 09:25:12 +02:00
smp-cmp.c mips: fix up obsolete cpu function usage. 2015-03-05 15:25:06 +10:30
smp-cps.c MIPS: kernel: smp-cps: Fix 64-bit compatibility errors due to pointer casting 2015-07-09 11:12:57 +02:00
smp-gic.c
smp-mt.c mips: fix up obsolete cpu function usage. 2015-03-05 15:25:06 +10:30
smp-up.c
smp.c MIPS: Initialise MAARs on secondary CPUs 2015-09-27 14:15:26 +02:00
spinlock_test.c
spram.c MIPS: Add cases for CPU_I6400 2015-08-26 15:23:03 +02:00
stacktrace.c
sync-r4k.c
syscall.c MIPS: kernel: syscall: Set the appropriate ISA level for MIPS R6 2015-02-17 15:37:29 +00:00
sysrq.c MIPS: Refactor dumping of TLB registers for r3k/r4k 2015-09-03 12:07:45 +02:00
time.c
topology.c
traps.c MIPS: Add uprobes support. 2015-09-03 12:08:05 +02:00
unaligned.c MIPS: unaligned: Move from deprecated __initcall to arch_initcall. 2015-09-03 12:07:49 +02:00
uprobes.c MIPS: Add uprobes support. 2015-09-03 12:08:05 +02:00
vdso.c
vmlinux.lds.S MIPS: Add support for vmlinux.bin appended dtb 2015-06-21 21:54:14 +02:00
vpe-cmp.c
vpe-mt.c
vpe.c MIPS: MT: Remove "weak" from vpe_run() declaration 2015-08-26 15:23:40 +02:00
watch.c