hamza.kesraoui/sst-linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity
a1.2
sst-linux/Documentation
History
Oleg Nesterov ba181019d1 sched/isolation: Prevent boot crash when the boot CPU is nohz_full 
Documentation/timers/no_hz.rst states that the "nohz_full=" mask must not
include the boot CPU, which is no longer true after:

  08ae95f4fd ("nohz_full: Allow the boot CPU to be nohz_full").

However after:

  aae17ebb53cd ("workqueue: Avoid using isolated cpus' timers on queue_delayed_work")

the kernel will crash at boot time in this case; housekeeping_any_cpu()
returns an invalid CPU number until smp_init() brings the first
housekeeping CPU up.

Change housekeeping_any_cpu() to check the result of cpumask_any_and() and
return smp_processor_id() in this case.

This is just the simple and backportable workaround which fixes the
symptom, but smp_processor_id() at boot time should be safe at least for
type == HK_TYPE_TIMER, this more or less matches the tick_do_timer_boot_cpu
logic.

There is no worry about cpu_down(); tick_nohz_cpu_down() will not allow to
offline tick_do_timer_cpu (the 1st online housekeeping CPU).

[ Apply only documentation changes as commit which causes boot
  crash when boot CPU is nohz_full is not backported to stable
  kernels - Krishanth ]

Reported-by: Chris von Recklinghausen <crecklin@redhat.com>
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Reviewed-by: Phil Auld <pauld@redhat.com>
Acked-by: Frederic Weisbecker <frederic@kernel.org>
Link: https://lore.kernel.org/r/20240411143905.GA19288@redhat.com
Closes: https://lore.kernel.org/all/20240402105847.GA24832@redhat.com/
Signed-off-by: Krishanth Jagaduri <Krishanth.Jagaduri@sony.com>
[ strip out upstream commit and Fixes: so tools don't get confused that
  this commit actually does anything real - gregkh]
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2025-03-28 21:58:48 +01:00
..
ABI PCI: Add 'reset_subordinate' to reset hierarchy below bridge 2024-12-14 19:54:48 +01:00
accounting delayacct: improve the average delay precision of getdelay tool to microsecond 2024-10-17 15:22:06 +02:00
admin-guide proc: add config & param to block forcing mem writes 2024-10-17 15:21:39 +02:00
arc
arm EFI updates for v6.1 2022-10-09 08:56:54 -07:00
arm64 arm64: errata: Expand speculative SSBS workaround once more 2024-10-17 15:22:05 +02:00
block blk-crypto: don't use struct request_queue for public interfaces 2023-05-11 23:03:00 +09:00
bpf bpf: Replace bpf_lpm_trie_key 0-length array with flexible array 2024-08-29 17:30:22 +02:00
cdrom It was a moderately busy cycle for documentation; highlights include: 2022-05-25 11:17:41 -07:00
core-api mm: Don't pin ZERO_PAGE in pin_user_pages() 2025-03-07 16:56:47 +01:00
cpu-freq cpufreq: Reintroduce ready() callback 2022-02-09 13:18:49 +05:30
crypto crypto: engine - Add KPP Support to Crypto Engine 2021-10-29 21:04:03 +08:00
dev-tools docs/scripts/gdb: add necessary make scripts_gdb step 2023-03-10 09:33:58 +01:00
devicetree dt-bindings: mfd: bd71815: Fix rsense and typos 2025-02-21 13:49:00 +01:00
doc-guide Rust introduction for v6.1-rc1 2022-10-03 16:39:37 -07:00
driver-api fpga: manager: add owner module and take its refcount 2024-12-14 19:53:12 +01:00
fault-injection lkdtm: replace ll_rw_block with submit_bh 2023-07-19 16:21:53 +02:00
fb Documentation: fb: udlfb: clean up text and formatting 2022-09-27 13:21:44 -06:00
features Xtensa updates for v5.20 2022-08-04 15:35:58 -07:00
filesystems fs_parser: update mount_api doc to match function signature 2024-12-14 19:53:48 +01:00
firmware_class
firmware-guide Merge branches 'acpi-misc', 'acpi-tools' and 'acpi-docs' 2022-10-03 20:03:49 +02:00
fpga Documentation: fpga: dfl: add link address of feature id table 2022-05-10 16:05:27 +08:00
gpu drm/vmwgfx: Remove vmwgfx_hashtab 2023-01-18 11:58:28 +01:00
hid Documentation: Add leading slash to some paths 2021-03-31 13:49:19 -06:00
hwmon hwmon: (ftsteutates) Fix scaling of measurements 2023-03-10 09:33:10 +01:00
i2c docs: i2c: slave-interface: return errno when handle I2C_SLAVE_WRITE_REQUESTED 2022-09-28 21:41:59 +02:00
ia64 docs: archis: add a per-architecture features list 2020-12-03 15:10:15 -07:00
iio docs: iio: add documentation for BNO055 driver 2022-09-21 18:42:56 +01:00
images
infiniband RDMA/core: Remove FMR device ops 2020-06-02 20:32:54 -03:00
input Merge branch 'next' into for-linus 2022-10-09 22:30:23 -07:00
isdn isdn: capi: dead code removal 2019-12-11 09:12:38 +01:00
kbuild kconfig: add warn-unknown-symbols sanity check 2025-02-21 13:49:24 +01:00
kernel-hacking Documentation: Fix spelling mistake in hacking.rst 2022-10-24 11:27:51 -06:00
leds leds: qcom-lpg: Require pattern to follow documentation 2022-05-24 22:08:10 +02:00
litmus-tests Documentation/litmus-tests: Add note on herd7 7.56 in atomic litmus test 2020-06-29 12:05:18 -07:00
livepatch doc: module: update file references 2022-07-01 14:50:01 -07:00
locking kcsan, seqlock: Support seqcount_latch_t 2024-12-14 19:53:19 +01:00
loongarch docs/LoongArch: Add booting description 2022-12-08 14:59:15 +08:00
m68k video: fbdev: atari: Fix inverse handling 2022-07-18 07:56:17 +02:00
maintainer Some late-arriving documentation improvements. This is mostly build-system 2022-03-31 12:10:42 -07:00
mhi
mips docs: archis: add a per-architecture features list 2020-12-03 15:10:15 -07:00
misc-devices Documentation: Wire Oxford Semiconductor PCIe (Tornado) 950 2022-05-19 18:24:22 +02:00
mm mm: fix race between __split_huge_pmd_locked() and GUP-fast 2024-06-16 13:41:38 +02:00
netlabel docs: add some directories to the main documentation index 2019-07-15 11:03:03 -03:00
networking strparser: Add read_sock callback 2025-03-07 16:56:37 +01:00
nios2 docs: nios2: add missing ReST file 2020-12-07 08:35:21 -07:00
nvdimm nvdimm: fixes to maintainter-entry-profile 2020-05-25 10:19:19 -06:00
openrisc docs: archis: add a per-architecture features list 2020-12-03 15:10:15 -07:00
parisc docs: archis: add a per-architecture features list 2020-12-03 15:10:15 -07:00
PCI Fix of heap data and clang warnings, support for a new Intel NTB device, 2022-08-13 14:00:45 -07:00
pcmcia
peci docs: Add PECI documentation 2022-02-09 08:04:44 +01:00
power Documentation: PM: Clarify pm_runtime_resume_and_get() return value 2024-12-19 18:08:56 +01:00
powerpc powerpc/64s: update cpu selection options 2022-09-28 19:22:10 +10:00
process docs: Set minimal gtags / GNU GLOBAL version to 6.6.5 2023-07-05 18:27:38 +01:00
RCU doc: rcu: update printed dynticks counter bits 2024-12-14 19:53:18 +01:00
riscv riscv: Move early dtb mapping into the fixmap region 2023-05-01 08:26:28 +09:00
rust x86: enable initial Rust support 2022-09-28 09:02:45 +02:00
s390 vfio/mdev: embedd struct mdev_parent in the parent data structure 2022-10-04 12:06:58 -06:00
scheduler docs: scheduler: Update new path for the sysctl knobs 2022-09-27 13:21:42 -06:00
scsi scsi: core: Fix the scsi_set_resid() documentation 2023-09-13 09:43:00 +02:00
security KEYS: encrypted: fix key instantiation with user-provided data 2022-12-21 17:48:11 +01:00
sh docs: archis: add a per-architecture features list 2020-12-03 15:10:15 -07:00
sound ASoC: doc: Fix undefined SND_SOC_DAPM_NOPM argument 2024-02-05 20:12:54 +00:00
sparc docs: archis: add a per-architecture features list 2020-12-03 15:10:15 -07:00
sphinx docs: kernel_include.py: Cope with docutils 0.21 2024-05-25 16:21:35 +02:00
sphinx-static
spi spi: pxa2xx_spi: Convert to use GPIO descriptors 2022-01-31 15:17:27 +00:00
staging docs: put atomic*.txt and memory-barriers.txt into the core-api book 2022-09-29 12:55:06 -06:00
target tweewide: Fix most Shebang lines 2020-12-08 23:30:04 +09:00
timers sched/isolation: Prevent boot crash when the boot CPU is nohz_full 2025-03-28 21:58:48 +01:00
tools A handful of relatively simple documentation fixes, plus a set of patches 2022-10-13 10:58:32 -07:00
trace tracing/probes: Add symstr type for dynamic events 2023-08-03 10:23:54 +02:00
translations delayacct: improve the average delay precision of getdelay tool to microsecond 2024-10-17 15:22:06 +02:00
usb usbip: add USBIP_URB_* URB transfer flags 2022-08-31 09:07:53 +02:00
userspace-api media: mc: Expand MUST_CONNECT flag to always require an enabled link 2024-04-03 15:19:25 +02:00
virt x86/sev: Change snp_guest_issue_request()'s fw_err argument 2023-11-20 11:52:13 +01:00
w1 Documentation: W1: minor typo corrections 2022-09-27 13:21:44 -06:00
watchdog watchdog/pseries-wdt: initial support for H_WATCHDOG-based watchdog timers 2022-07-20 21:57:39 +10:00
x86 x86/Kconfig: Remove CONFIG_AMD_MEM_ENCRYPT_ACTIVE_BY_DEFAULT 2024-04-03 15:19:47 +02:00
xtensa
.gitignore .gitignore: add SPDX License Identifier 2020-03-25 11:50:48 +01:00
arch.rst Documentation: LoongArch: Add basic documentations 2022-06-03 20:09:27 +08:00
atomic_bitops.txt wait_on_bit: add an acquire memory barrier 2022-08-26 09:30:25 -07:00
atomic_t.txt Documentation/atomic_t: Document forward progress expectations 2021-08-04 15:16:47 +02:00
Changes docs: add back 'Documentation/Changes' file (as symlink) 2016-12-14 16:30:12 -08:00
CodingStyle doc: re-add CodingStyle and SubmittingPatches 2016-10-24 08:12:35 -02:00
conf.py There's not a huge amount of activity in the docs tree this time around, 2022-10-03 10:23:32 -07:00
docutils.conf doc-rst: Add missing newline at end of file 2019-06-20 14:16:56 -06:00
dontdiff randstruct: Move seed generation into scripts/basic/ 2022-05-08 01:33:07 -07:00
index.rst Rust introduction for v6.1-rc1 2022-10-03 16:39:37 -07:00
Kconfig docs: Kconfig: Fix help text indentation 2022-06-13 11:33:43 -06:00
Makefile docs: Makefile: Add -no-shell-escape option to LATEXOPTS 2022-02-14 12:50:17 -07:00
memory-barriers.txt docs/memory-barriers.txt: Fixup long lines 2022-08-31 05:15:31 -07:00
SubmittingPatches doc: re-add CodingStyle and SubmittingPatches 2016-10-24 08:12:35 -02:00
subsystem-apis.rst docs: Rewrite the front page 2022-09-29 12:55:06 -06:00