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linux/arch/mips/kernel
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Josh Poimboeuf 071c44e427 sched/idle: Mark arch_cpu_idle_dead() __noreturn 
Before commit 076cbf5d2163 ("x86/xen: don't let xen_pv_play_dead()
return"), in Xen, when a previously offlined CPU was brought back
online, it unexpectedly resumed execution where it left off in the
middle of the idle loop.

There were some hacks to make that work, but the behavior was surprising
as do_idle() doesn't expect an offlined CPU to return from the dead (in
arch_cpu_idle_dead()).

Now that Xen has been fixed, and the arch-specific implementations of
arch_cpu_idle_dead() also don't return, give it a __noreturn attribute.

This will cause the compiler to complain if an arch-specific
implementation might return.  It also improves code generation for both
caller and callee.

Also fixes the following warning:

  vmlinux.o: warning: objtool: do_idle+0x25f: unreachable instruction

Reported-by: Paul E. McKenney <paulmck@kernel.org>
Tested-by: Paul E. McKenney <paulmck@kernel.org>
Link: https://lore.kernel.org/r/60d527353da8c99d4cf13b6473131d46719ed16d.1676358308.git.jpoimboe@kernel.org
Signed-off-by: Josh Poimboeuf <jpoimboe@kernel.org>
2023-03-08 08:44:28 -08:00
..
syscalls
arch: syscalls: simplify uapi/kapi directory creation
2022-03-31 12:03:46 +09:00
.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: rename PGD_ORDER to PGD_TABLE_ORDER
2022-07-17 17:14:42 -07:00
bmips_5xxx_init.S
MIPS: BCM5xxx: Remove dead init_fpu code
2018-11-08 11:20:57 -08:00
bmips_vec.S
…
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: smp-cps: Don't rely on CP0_CMGCRBASE
2023-02-27 23:44:57 +01:00
cpu-probe.c
MIPS: Remove VR41xx support
2022-07-14 11:52:29 +02:00
cpu-r3k-probe.c
MIPS: Remove TX39XX support
2022-03-01 10:07:22 +01:00
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: Mark R4K timer as unstable if CPU freq changes
2020-05-22 09:14:06 +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: Modernize READ_IMPLIES_EXEC
2022-02-23 13:08:30 +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: Always use -Wa,-msoft-float and eliminate GAS_HAS_SET_HARDFLOAT
2023-01-26 12:41:16 +09:00
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: Use NOKPROBE_SYMBOL() instead of __kprobes annotation
2022-05-12 18:00:51 +02:00
linux32.c
MIPS: Delete unused code in linux32.c
2018-08-01 13:20:27 -07:00
machine_kexec.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 230
2019-06-19 17:09:06 +02:00
Makefile
kbuild: use obj-y instead extra-y for objects placed at the head
2022-10-02 18:04:05 +09:00
mcount.S
mips: ftrace: fix static function graph tracing
2018-06-19 15:00:12 -07:00
mips-cm.c
mips: cm: Convert to bitfield API to fix out-of-bounds access
2021-11-02 10:53:52 +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: Replace deprecated CPU-hotplug functions.
2021-08-05 10:57:01 +02:00
mips-mt.c
mips: rename mt_init to mips_mt_init
2022-07-29 18:07:13 -07:00
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
jump_label: mips: move module NOP patching into arch code
2022-06-24 09:48:55 +02:00
octeon_switch.S
Kbuild: rename CC_STACKPROTECTOR[_STRONG] config variables
2018-06-14 12:21:18 +09:00
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: barrier: Add __SYNC() infrastructure
2019-10-07 09:42:17 -07:00
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
sched/idle: Mark arch_cpu_idle_dead() __noreturn
2023-03-08 08:44:28 -08:00
prom.c
MIPS: move from strlcpy with unused retval to strscpy
2022-09-12 15:34:04 +02:00
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: ptrace: user_regset_copyin_ignore() always returns 0
2022-11-15 14:30:40 -08:00
r4k_fpu.S
MIPS: Always use -Wa,-msoft-float and eliminate GAS_HAS_SET_HARDFLOAT
2023-01-26 12:41:16 +09:00
r4k_switch.S
Kbuild: rename CC_STACKPROTECTOR[_STRONG] config variables
2018-06-14 12:21:18 +09:00
r4k-bugs64.c
MIPS: remove asm/war.h
2022-02-22 09:35:49 +01:00
r2300_fpu.S
MIPS: Always use -Wa,-msoft-float and eliminate GAS_HAS_SET_HARDFLOAT
2023-01-26 12:41:16 +09:00
r2300_switch.S
Kbuild: rename CC_STACKPROTECTOR[_STRONG] config variables
2018-06-14 12:21:18 +09:00
relocate_kernel.S
MIPS: fix duplicate definitions for exported symbols
2022-11-11 15:44:44 +01:00
relocate.c
MIPS: move from strlcpy with unused retval to strscpy
2022-09-12 15:34:04 +02:00
reset.c
mips: Use do_kernel_power_off()
2022-05-19 19:30:31 +02:00
rtlx-cmp.c
…
rtlx-mt.c
MIPS: Replace setup_irq() by request_irq()
2020-03-05 16:47:35 +01:00
rtlx.c
vfs: do bulk POLL* -> EPOLL* replacement
2018-02-11 14:34:03 -08:00
scall32-o32.S
MIPS: remove asm/war.h
2022-02-22 09:35:49 +01:00
scall64-n32.S
MIPS: Fix build error due to PTR used in more places
2022-01-27 09:04:19 +01:00
scall64-n64.S
MIPS: remove asm/war.h
2022-02-22 09:35:49 +01:00
scall64-o32.S
MIPS: Fix build error due to PTR used in more places
2022-01-27 09:04:19 +01:00
segment.c
mips: kernel: convert to DEFINE_SHOW_ATTRIBUTE
2022-09-19 16:40:17 +02:00
setup.c
bitmap patches for v6.1-rc1
2022-10-10 12:49:34 -07:00
signal32.c
Remove 'type' argument from access_ok() function
2019-01-03 18:57:57 -08:00
signal_n32.c
MIPS: remove asm/war.h
2022-02-22 09:35:49 +01:00
signal_o32.c
signal: Remove task parameter from force_sig
2019-05-27 09:36:28 -05:00
signal-common.h
…
signal.c
ptrace: Cleanups for v5.18
2022-03-28 17:29:53 -07:00
smp-bmips.c
mips/cpu: Make sure play_dead() doesn't return
2023-03-08 08:44:23 -08:00
smp-cmp.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 182
2019-05-30 11:29:20 -07:00
smp-cps.c
mips/cpu: Expose play_dead()'s prototype definition
2023-03-08 08:44:19 -08:00
smp-mt.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 182
2019-05-30 11:29:20 -07:00
smp-up.c
MIPS: SMP: Allow boot_secondary SMP op to return errors
2017-08-30 00:57:27 +02:00
smp.c
MIPS: smp: optimization for flush_tlb_mm when exiting
2022-05-12 17:56:21 +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: Add CONFIG/CONFIG6/Cause reg fields macro
2020-05-22 09:12:22 +02:00
stacktrace.c
treewide: Add SPDX license identifier for missed files
2019-05-21 10:50:45 +02:00
sync-r4k.c
MIPS: sync-r4k: do slave counter synchronization with disabled HW interrupts
2020-01-22 10:16:18 -08:00
syscall.c
MIPS: Fix build error due to PTR used in more places
2022-01-27 09:04:19 +01:00
sysrq.c
MIPS: constify sysrq_key_op
2020-05-15 14:53:19 +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: fix fortify panic when copying asm exception handlers
2022-03-07 13:09:28 +01:00
unaligned.c
MIPS: Handle address errors for accesses above CPU max virtual user address
2022-02-25 09:36:05 +01:00
uprobes.c
MIPS: Fix fall-through warnings for Clang
2021-10-13 14:47:42 -05:00
vdso.c
treewide: use get_random_u32_below() instead of deprecated function
2022-11-18 02:15:15 +01:00
vmlinux.lds.S
objtool/idle: Validate __cpuidle code as noinstr
2023-01-13 11:48:15 +01:00
vpe-cmp.c
MIPS: vpe-cmp: fix possible memory leak while module exiting
2022-11-22 13:09:36 +01:00
vpe-mt.c
MIPS: vpe-mt: drop physical_memsize
2023-02-20 15:11:01 +01:00
vpe.c
MIPS: vpe: Remove vpe_getcwd
2021-01-27 21:49:16 +01:00
watch.c
MIPS: Use fallthrough for arch/mips
2020-05-07 11:55:47 +02:00