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580724fce2
linux/arch/mips/kernel
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Jiaxun Yang 580724fce2 MIPS: sync-r4k: Rework based on x86 tsc_sync 
The original sync-r4k did a good job on reducing jitter by determine
the "next time value", but it has a limitation that when synchronization
being performed too many times due to high core count or CPU hotplug,
the timewrap on CPU0 will become unaccpetable.

Rework the mechanism based on latest x86 tsc_sync. (It seems like
the original implementation is based on tsc_sync at that time,
so it's just a refresh.) To improve overall performance.

Tesed on Loongson64, Boston, QEMU.

Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2024-07-03 16:50:12 +02:00
..
syscalls mips: fix compat_sys_lseek syscall 2024-06-21 10:16:34 +02:00
.gitignore .gitignore: add SPDX License Identifier 2020-03-25 11:50:48 +01:00
access-helper.h MIPS: Fix new sparse warnings 2021-04-07 16:11:05 +02:00
asm-offsets.c MIPS: scall: Save thread_info.syscall unconditionally on entry 2024-04-09 16:52:21 +02:00
bmips_5xxx_init.S MIPS: BCM5xxx: Remove dead init_fpu code 2018-11-08 11:20:57 -08:00
bmips_vec.S MIPS: BMIPS: Add Whirlwind (BMIPS5200) initialization code 2016-05-09 12:00:01 +02:00
branch.c MIPS: kernel: include probes-common.h header in branch.c 2020-09-21 22:14:24 +02:00
cacheinfo.c drivers: base: cacheinfo: Get rid of DEFINE_SMP_CALL_CACHE_FUNCTION() 2021-09-01 10:29:10 +02:00
cevt-bcm1480.c MIPS: Replace setup_irq() by request_irq() 2020-03-05 16:47:35 +01:00
cevt-ds1287.c MIPS: Replace setup_irq() by request_irq() 2020-03-05 16:47:35 +01:00
cevt-gt641xx.c MIPS: Replace setup_irq() by request_irq() 2020-03-05 16:47:35 +01:00
cevt-r4k.c MIPS: cevt-r4k: Offset the value used to clear compare interrupt 2023-02-27 23:45:17 +01:00
cevt-sb1250.c MIPS: Replace setup_irq() by request_irq() 2020-03-05 16:47:35 +01:00
cevt-txx9.c mips: kernel: convert comma to semicolon 2020-12-28 22:32:28 +01:00
cmpxchg.c MIPS: fix typos in comments 2022-05-04 22:22:59 +02:00
cps-vec-ns16550.S mips: Add CPS_NS16550_WIDTH config 2020-05-22 09:12:52 +02:00
cps-vec.S MIPS: cps-vec: Use macros for 64bits access 2024-02-20 12:44:59 +01:00
cpu-probe.c Just cleanups and fixes 2024-01-17 11:20:50 -08:00
cpu-r3k-probe.c mips: move cache declarations into header 2023-12-10 17:21:41 -08:00
crash_dump.c vmcore: convert copy_oldmem_page() to take an iov_iter 2022-04-29 14:37:59 -07:00
crash.c mm: remove include/linux/bootmem.h 2018-10-31 08:54:16 -07:00
csrc-bcm1480.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157 2019-05-30 11:26:37 -07:00
csrc-ioasic.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157 2019-05-30 11:26:37 -07:00
csrc-r4k.c MIPS: csrc-r4k: Don't register as sched_clock if unfit 2024-07-03 16:49:11 +02:00
csrc-sb1250.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157 2019-05-30 11:26:37 -07:00
early_printk_8250.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 1 2019-05-21 11:28:39 +02:00
early_printk.c mips: unify prom_putchar() declarations 2018-07-17 09:40:17 -07:00
elf.c mips: Call lose_fpu(0) before initializing fcr31 in mips_set_personality_nan 2024-01-27 11:08:04 +01:00
entry.S MIPS: Remove TX39XX support 2022-03-01 10:07:22 +01:00
fpu-probe.c MIPS: cpu-probe: move fpu probing/handling into its own file 2020-10-12 12:04:50 +02:00
fpu-probe.h MIPS: cpu-probe: move fpu probing/handling into its own file 2020-10-12 12:04:50 +02:00
ftrace.c MIPS: kernel: Remove not needed set_fs calls 2021-04-06 14:36:56 +02:00
genex.S MIPS: Allow vectored interrupt handler to reside everywhere for 64bit 2023-12-30 15:36:01 +01:00
gpio_txx9.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
head.S MIPS: of: Introduce helper function to get DTB 2021-02-04 13:34:51 +01:00
i8253.c MIPS: Replace setup_irq() by request_irq() 2020-03-05 16:47:35 +01:00
idle.c cpuidle,arch: Mark all regular cpuidle_state:: Enter methods __cpuidle 2023-01-13 11:48:18 +01:00
irq_txx9.c MIPS: Remove TX39XX support 2022-03-01 10:07:22 +01:00
irq-gt641xx.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 1 2019-05-21 11:28:39 +02:00
irq-msc01.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
irq.c MIPS: Only use current_stack_pointer on GCC 2022-03-14 15:02:53 +01:00
jump_label.c MIPS: jump_label: Fix compat branch range check 2022-11-11 15:46:03 +01:00
kgdb.c MIPS: kernel: Drop kgdb_call_nmi_hook 2021-02-15 12:23:54 +01:00
kprobes.c MIPS: Fix typos 2024-01-08 10:39:12 +01:00
linux32.c mips: add asm/syscalls.h header 2023-12-10 17:21:38 -08:00
machine_kexec.c mips: kexec: include linux/reboot.h 2023-12-10 17:21:42 -08:00
Makefile mips, kexec: fix the incorrect ifdeffery and dependency of CONFIG_KEXEC 2023-12-12 17:20:18 -08:00
mcount.S mips: replace #include <asm/export.h> with #include <linux/export.h> 2023-08-15 10:22:23 +02:00
mips-cm.c mips: cm: Convert __mips_cm_phys_base() to weak function 2024-03-11 14:02:15 +01:00
mips-cpc.c mips: cpc: Fix refcount leak in mips_cpc_default_phys_base 2022-04-26 15:11:25 +02:00
mips-mt-fpaff.c mips: add asm/syscalls.h header 2023-12-10 17:21:38 -08:00
mips-mt.c mips: mt: make mt_class constant 2024-03-07 17:18:50 +01:00
mips-r2-to-r6-emul.c MIPS: Fix build error due to PTR used in more places 2022-01-27 09:04:19 +01:00
module.c arch: make execmem setup available regardless of CONFIG_MODULES 2024-05-14 00:31:44 -07:00
octeon_switch.S mips: remove unneeded #include <asm/export.h> 2023-08-15 10:22:23 +02:00
perf_event_mipsxx.c MIPS: fix typos in comments 2022-05-04 22:22:59 +02:00
perf_event.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
perf_regs.c MIPS: kernel: Support extracting off-line stack traces from user-space with perf 2021-02-04 21:55:45 +01:00
pm-cps.c MIPS: pm-cps: Use GPR number macros 2024-02-20 12:41:52 +01:00
pm.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
probes-common.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
proc.c MIPS: cpuinfo: Fix a warning for CONFIG_CPUMASK_OFFSTACK 2022-07-14 11:49:40 +02:00
process.c MIPS: kernel: Clear FPU states when setting up kernel threads 2023-12-05 18:47:11 +01:00
prom.c mips: Set dump-stack arch description 2023-12-21 15:33:44 +01:00
ptrace32.c mm: don't include asm/pgtable.h if linux/mm.h is already included 2020-06-09 09:39:13 -07:00
ptrace.c MIPS: scall: Save thread_info.syscall unconditionally on entry 2024-04-09 16:52:21 +02:00
r4k_fpu.S mips: replace #include <asm/export.h> with #include <linux/export.h> 2023-08-15 10:22:23 +02:00
r4k_switch.S Kbuild: rename CC_STACKPROTECTOR[_STRONG] config variables 2018-06-14 12:21:18 +09:00
r4k-bugs64.c mips: add missing declarations for trap handlers 2023-12-10 17:21:38 -08:00
r2300_fpu.S mips: replace #include <asm/export.h> with #include <linux/export.h> 2023-08-15 10:22:23 +02:00
r2300_switch.S mips: remove unneeded #include <asm/export.h> 2023-08-15 10:22:23 +02:00
relocate_kernel.S MIPS: Fix typos 2024-01-08 10:39:12 +01:00
relocate.c MIPS: Fix typos 2024-01-08 10:39:12 +01:00
reset.c mips: Use do_kernel_power_off() 2022-05-19 19:30:31 +02:00
rtlx-mt.c mips: mt: make mt_class constant 2024-03-07 17:18:50 +01:00
rtlx.c vfs: do bulk POLL* -> EPOLL* replacement 2018-02-11 14:34:03 -08:00
scall32-o32.S MIPS: scall: Save thread_info.syscall unconditionally on entry 2024-04-09 16:52:21 +02:00
scall64-n32.S MIPS: scall: Save thread_info.syscall unconditionally on entry 2024-04-09 16:52:21 +02:00
scall64-n64.S MIPS: scall: Save thread_info.syscall unconditionally on entry 2024-04-09 16:52:21 +02:00
scall64-o32.S MIPS: scall: Save thread_info.syscall unconditionally on entry 2024-04-09 16:52:21 +02:00
segment.c mips: kernel: convert to DEFINE_SHOW_ATTRIBUTE 2022-09-19 16:40:17 +02:00
setup.c mips, crash: wrap crash dumping code into crash related ifdefs 2024-02-23 17:48:24 -08:00
signal32.c mips: add asm/syscalls.h header 2023-12-10 17:21:38 -08:00
signal_n32.c mips: signal: move sigcontext declarations to header 2023-12-10 17:21:39 -08:00
signal_o32.c mips: add asm/syscalls.h header 2023-12-10 17:21:38 -08:00
signal-common.h mips: signal: move sigcontext declarations to header 2023-12-10 17:21:39 -08:00
signal.c Just cleanups and fixes 2024-01-17 11:20:50 -08:00
smp-bmips.c mips: bmips: enable RAC on BMIPS4350 2024-06-27 10:44:36 +02:00
smp-cps.c MIPS: Allows relocation exception vectors everywhere 2024-02-20 12:44:59 +01:00
smp-mt.c MIPS: Rework smt cmdline parameters 2023-06-09 10:34:14 +02:00
smp-up.c MIPS: SMP: Allow boot_secondary SMP op to return errors 2017-08-30 00:57:27 +02:00
smp.c MIPS: sync-r4k: Rework based on x86 tsc_sync 2024-07-03 16:50:12 +02:00
spinlock_test.c mips: kernel: use DEFINE_DEBUGFS_ATTRIBUTE with debugfs_create_file_unsafe() 2021-03-14 14:09:49 +01:00
spram.c mips: spram: fix missing prototype warning for spram_config 2023-12-10 17:21:41 -08:00
stacktrace.c treewide: Add SPDX license identifier for missed files 2019-05-21 10:50:45 +02:00
sync-r4k.c MIPS: sync-r4k: Rework based on x86 tsc_sync 2024-07-03 16:50:12 +02:00
syscall.c mips: add asm/syscalls.h header 2023-12-10 17:21:38 -08:00
sysrq.c tty: sysrq: switch sysrq handlers from int to u8 2023-07-25 19:21:03 +02:00
time.c MIPS: Fix CP0 counter erratum detection for R4k CPUs 2022-04-29 15:52:00 +02:00
topology.c drivers/base/node: consolidate node device subsystem initialization in node_dev_init() 2022-03-22 15:57:10 -07:00
traps.c MIPS: traps: Give more explanations if ebase doesn't belong to KSEG0 2024-02-20 12:44:59 +01:00
unaligned.c mips: add missing declarations for trap handlers 2023-12-10 17:21:38 -08:00
uprobes.c MIPS: uprobes: Restore thread.trap_nr 2023-04-24 13:31:44 +02:00
vdso.c MIPS: vdso: Use generic union vdso_data_store 2024-02-20 20:56:01 +01:00
vmlinux.lds.S MIPS: Define RUNTIME_DISCARD_EXIT in LD script 2023-04-21 23:59:43 +02:00
vpe-mt.c MIPS: Implement microMIPS MT ASE helpers 2024-02-23 10:13:47 +01:00
vpe.c MIPS: Fix typos 2024-01-08 10:39:12 +01:00
watch.c MIPS: Use fallthrough for arch/mips 2020-05-07 11:55:47 +02:00