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linux/arch/alpha/kernel
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Peter Zijlstra 58c644ba51 sched/idle: Fix arch_cpu_idle() vs tracing 
We call arch_cpu_idle() with RCU disabled, but then use
local_irq_{en,dis}able(), which invokes tracing, which relies on RCU.

Switch all arch_cpu_idle() implementations to use
raw_local_irq_{en,dis}able() and carefully manage the
lockdep,rcu,tracing state like we do in entry.

(XXX: we really should change arch_cpu_idle() to not return with
interrupts enabled)

Reported-by: Sven Schnelle <svens@linux.ibm.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Mark Rutland <mark.rutland@arm.com>
Tested-by: Mark Rutland <mark.rutland@arm.com>
Link: https://lkml.kernel.org/r/20201120114925.594122626@infradead.org
2020-11-24 16:47:35 +01:00
..
syscalls mm/madvise: introduce process_madvise() syscall: an external memory hinting API 2020-10-18 09:27:10 -07:00
.gitignore .gitignore: add SPDX License Identifier 2020-03-25 11:50:48 +01:00
asm-offsets.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
audit.c alpha: Enable system-call auditing support. 2014-01-31 09:21:55 -08:00
binfmt_loader.c exec: Remove recursion from search_binary_handler 2020-05-21 10:16:57 -05:00
bugs.c alpha: Implement CPU vulnerabilities sysfs functions. 2018-04-07 15:04:04 -07:00
console.c vgacon: Set VGA struct resource types 2017-12-18 23:07:43 -06:00
core_apecs.c memblock: stop using implicit alignment to SMP_CACHE_BYTES 2018-10-31 08:54:16 -07:00
core_cia.c treewide: add checks for the return value of memblock_alloc*() 2019-03-12 10:04:02 -07:00
core_irongate.c mm: remove unneeded includes of <asm/pgalloc.h> 2020-08-07 11:33:26 -07:00
core_lca.c memblock: stop using implicit alignment to SMP_CACHE_BYTES 2018-10-31 08:54:16 -07:00
core_marvel.c iomap: constify ioreadX() iomem argument (as in generic implementation) 2020-08-14 19:56:57 -07:00
core_mcpcia.c memblock: stop using implicit alignment to SMP_CACHE_BYTES 2018-10-31 08:54:16 -07:00
core_polaris.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
core_t2.c memblock: stop using implicit alignment to SMP_CACHE_BYTES 2018-10-31 08:54:16 -07:00
core_titan.c mm: remove unneeded includes of <asm/pgalloc.h> 2020-08-07 11:33:26 -07:00
core_tsunami.c memblock: stop using implicit alignment to SMP_CACHE_BYTES 2018-10-31 08:54:16 -07:00
core_wildfire.c alpha: fix spelling mistake QSD_PORT_ACTUVE -> QSD_PORT_ACTIVE 2018-12-21 11:57:57 -05:00
entry.S alpha: unify the glue for sigreturn-like syscalls 2018-08-16 21:03:35 -04:00
err_common.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
err_ev6.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
err_ev7.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
err_impl.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
err_marvel.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
err_titan.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
es1888.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
gct.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
head.S License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
io.c iomap: constify ioreadX() iomem argument (as in generic implementation) 2020-08-14 19:56:57 -07:00
irq_alpha.c alpha: Replace setup_irq() by request_irq() 2020-03-29 21:03:41 +02:00
irq_i8259.c alpha: Replace setup_irq() by request_irq() 2020-03-29 21:03:41 +02:00
irq_impl.h alpha: Replace setup_irq() by request_irq() 2020-03-29 21:03:41 +02:00
irq_pyxis.c alpha: Replace setup_irq() by request_irq() 2020-03-29 21:03:41 +02:00
irq_srm.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
irq.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
machvec_impl.h mm: remove unneeded includes of <asm/pgalloc.h> 2020-08-07 11:33:26 -07:00
Makefile alpha: Implement CPU vulnerabilities sysfs functions. 2018-04-07 15:04:04 -07:00
module.c treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
osf_sys.c alpha: remove unneeded semicolon in osf_sys.c 2020-06-12 17:43:17 -07:00
pc873xx.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
pc873xx.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
pci_impl.h alpha: fix reboot on Avanti platform 2018-01-20 17:01:10 -08:00
pci_iommu.c dma-mapping: split <linux/dma-mapping.h> 2020-10-06 07:07:03 +02:00
pci-noop.c treewide: add checks for the return value of memblock_alloc*() 2019-03-12 10:04:02 -07:00
pci-sysfs.c PCI: Add PCI_STD_NUM_BARS for the number of standard BARs 2019-10-14 10:22:26 -05:00
pci.c treewide: add checks for the return value of memblock_alloc*() 2019-03-12 10:04:02 -07:00
perf_event.c alpha: Use pr_warn instead of pr_warning 2019-10-18 10:26:32 +02:00
process.c sched/idle: Fix arch_cpu_idle() vs tracing 2020-11-24 16:47:35 +01:00
proto.h mm: reorder includes after introduction of linux/pgtable.h 2020-06-09 09:39:13 -07:00
ptrace.c mm: don't include asm/pgtable.h if linux/mm.h is already included 2020-06-09 09:39:13 -07:00
rtc.c alpha: rtc: simplify alpha_rtc_init 2018-12-21 11:57:57 -05:00
setup.c alpha: Fix build around srm_sysrq_reboot_op 2020-06-12 17:43:18 -07:00
signal.c tracehook: clear TIF_NOTIFY_RESUME in tracehook_notify_resume() 2020-10-17 15:04:36 -06:00
smc37c93x.c arch: mostly remove <asm/segment.h> 2019-04-23 21:51:40 +02:00
smc37c669.c arch: mostly remove <asm/segment.h> 2019-04-23 21:51:40 +02:00
smp.c mm: remove unneeded includes of <asm/pgalloc.h> 2020-08-07 11:33:26 -07:00
srm_env.c proc: convert everything to "struct proc_ops" 2020-02-04 03:05:26 +00:00
srmcons.c treewide: setup_timer() -> timer_setup() 2017-11-21 15:57:07 -08:00
sys_alcor.c mm: don't include asm/pgtable.h if linux/mm.h is already included 2020-06-09 09:39:13 -07:00
sys_cabriolet.c mm: don't include asm/pgtable.h if linux/mm.h is already included 2020-06-09 09:39:13 -07:00
sys_dp264.c mm: don't include asm/pgtable.h if linux/mm.h is already included 2020-06-09 09:39:13 -07:00
sys_eb64p.c mm: don't include asm/pgtable.h if linux/mm.h is already included 2020-06-09 09:39:13 -07:00
sys_eiger.c alpha: remove unneeded semicolon in sys_eiger.c 2020-06-12 17:43:17 -07:00
sys_jensen.c mm: don't include asm/pgtable.h if linux/mm.h is already included 2020-06-09 09:39:13 -07:00
sys_marvel.c mm: don't include asm/pgtable.h if linux/mm.h is already included 2020-06-09 09:39:13 -07:00
sys_miata.c mm: don't include asm/pgtable.h if linux/mm.h is already included 2020-06-09 09:39:13 -07:00
sys_mikasa.c mm: don't include asm/pgtable.h if linux/mm.h is already included 2020-06-09 09:39:13 -07:00
sys_nautilus.c mm: don't include asm/pgtable.h if linux/mm.h is already included 2020-06-09 09:39:13 -07:00
sys_noritake.c mm: don't include asm/pgtable.h if linux/mm.h is already included 2020-06-09 09:39:13 -07:00
sys_rawhide.c mm: don't include asm/pgtable.h if linux/mm.h is already included 2020-06-09 09:39:13 -07:00
sys_ruffian.c mm: don't include asm/pgtable.h if linux/mm.h is already included 2020-06-09 09:39:13 -07:00
sys_rx164.c mm: don't include asm/pgtable.h if linux/mm.h is already included 2020-06-09 09:39:13 -07:00
sys_sable.c mm: don't include asm/pgtable.h if linux/mm.h is already included 2020-06-09 09:39:13 -07:00
sys_sio.c mm: don't include asm/pgtable.h if linux/mm.h is already included 2020-06-09 09:39:13 -07:00
sys_sx164.c mm: don't include asm/pgtable.h if linux/mm.h is already included 2020-06-09 09:39:13 -07:00
sys_takara.c mm: don't include asm/pgtable.h if linux/mm.h is already included 2020-06-09 09:39:13 -07:00
sys_titan.c mm: don't include asm/pgtable.h if linux/mm.h is already included 2020-06-09 09:39:13 -07:00
sys_wildfire.c mm: don't include asm/pgtable.h if linux/mm.h is already included 2020-06-09 09:39:13 -07:00
systbls.S alpha: generate uapi header and syscall table header files 2018-12-21 11:57:56 -05:00
time.c alpha: Replace setup_irq() by request_irq() 2020-03-29 21:03:41 +02:00
traps.c treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
vmlinux.lds.S vmlinux.lds.h: Split ELF_DETAILS from STABS_DEBUG 2020-09-01 09:50:35 +02:00