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For many workloads, pagetable consumption is significant and it makes
sense to expose it in the memory.stat for the memory cgroups. However at
the moment, the pagetables are accounted per-zone. Converting them to
per-node and using the right interface will correctly account for the
memory cgroups as well.
[[email protected]: export __mod_lruvec_page_state to modules for arch/mips/kvm/]
Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Shakeel Butt <[email protected]>
Acked-by: Johannes Weiner <[email protected]>
Acked-by: Roman Gushchin <[email protected]>
Cc: Michal Hocko <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
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Since commit 70e806e4e645 ("mm: Do early cow for pinned pages during
fork() for ptes") pages under a FOLL_PIN will not be write protected
during COW for fork. This means that pages returned from
pin_user_pages(FOLL_WRITE) should not become write protected while the pin
is active.
However, there is a small race where get_user_pages_fast(FOLL_PIN) can
establish a FOLL_PIN at the same time copy_present_page() is write
protecting it:
CPU 0 CPU 1
get_user_pages_fast()
internal_get_user_pages_fast()
copy_page_range()
pte_alloc_map_lock()
copy_present_page()
atomic_read(has_pinned) == 0
page_maybe_dma_pinned() == false
atomic_set(has_pinned, 1);
gup_pgd_range()
gup_pte_range()
pte_t pte = gup_get_pte(ptep)
pte_access_permitted(pte)
try_grab_compound_head()
pte = pte_wrprotect(pte)
set_pte_at();
pte_unmap_unlock()
// GUP now returns with a write protected page
The first attempt to resolve this by using the write protect caused
problems (and was missing a barrrier), see commit f3c64eda3e50 ("mm: avoid
early COW write protect games during fork()")
Instead wrap copy_p4d_range() with the write side of a seqcount and check
the read side around gup_pgd_range(). If there is a collision then
get_user_pages_fast() fails and falls back to slow GUP.
Slow GUP is safe against this race because copy_page_range() is only
called while holding the exclusive side of the mmap_lock on the src
mm_struct.
[[email protected]: coding style fixes]
Link: https://lore.kernel.org/r/CAHk-=wi=iCnYCARbPGjkVJu9eyYeZ13N64tZYLdOB8CP5Q_PLw@mail.gmail.com
Link: https://lkml.kernel.org/r/[email protected]
Fixes: f3c64eda3e50 ("mm: avoid early COW write protect games during fork()")
Signed-off-by: Jason Gunthorpe <[email protected]>
Suggested-by: Linus Torvalds <[email protected]>
Reviewed-by: John Hubbard <[email protected]>
Reviewed-by: Jan Kara <[email protected]>
Reviewed-by: Peter Xu <[email protected]>
Acked-by: "Ahmed S. Darwish" <[email protected]> [seqcount_t parts]
Cc: Andrea Arcangeli <[email protected]>
Cc: "Aneesh Kumar K.V" <[email protected]>
Cc: Christoph Hellwig <[email protected]>
Cc: Hugh Dickins <[email protected]>
Cc: Jann Horn <[email protected]>
Cc: Kirill Shutemov <[email protected]>
Cc: Kirill Tkhai <[email protected]>
Cc: Leon Romanovsky <[email protected]>
Cc: Michal Hocko <[email protected]>
Cc: Oleg Nesterov <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
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Linus notes the kernel has had a nice helper for the 'size of struct with
variable array member at the end' operation for a couple years now, use
it.
Link: http://lore.kernel.org/r/CAHk-=wgNTLbvAD8mNTvh+GQyapNWeX20PXhU_+frqEvVq4298w@mail.gmail.com
Link: https://lkml.kernel.org/r/160288261564.3242821.6055291930923876456.stgit@dwillia2-desk3.amr.corp.intel.com
Signed-off-by: Dan Williams <[email protected]>
Reported-by: Linus Torvalds <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
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Use the helper that checks for overflows internally instead of manually
calculating the size of the new array.
Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Bartosz Golaszewski <[email protected]>
Acked-by: Christian König <[email protected]>
Cc: Alexander Shishkin <[email protected]>
Cc: Andy Shevchenko <[email protected]>
Cc: Borislav Petkov <[email protected]>
Cc: Borislav Petkov <[email protected]>
Cc: Christoph Lameter <[email protected]>
Cc: Daniel Vetter <[email protected]>
Cc: Daniel Vetter <[email protected]>
Cc: David Airlie <[email protected]>
Cc: David Rientjes <[email protected]>
Cc: Gustavo Padovan <[email protected]>
Cc: James Morse <[email protected]>
Cc: Jaroslav Kysela <[email protected]>
Cc: Jason Wang <[email protected]>
Cc: Joonsoo Kim <[email protected]>
Cc: Linus Walleij <[email protected]>
Cc: Maarten Lankhorst <[email protected]>
Cc: Mauro Carvalho Chehab <[email protected]>
Cc: Maxime Ripard <[email protected]>
Cc: "Michael S . Tsirkin" <[email protected]>
Cc: Pekka Enberg <[email protected]>
Cc: Robert Richter <[email protected]>
Cc: Sumit Semwal <[email protected]>
Cc: Takashi Iwai <[email protected]>
Cc: Takashi Iwai <[email protected]>
Cc: Thomas Zimmermann <[email protected]>
Cc: Tony Luck <[email protected]>
Cc: Vlastimil Babka <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
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Use the helper that checks for overflows internally instead of manually
calculating the size of the new array.
Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Bartosz Golaszewski <[email protected]>
Cc: Alexander Shishkin <[email protected]>
Cc: Andy Shevchenko <[email protected]>
Cc: Borislav Petkov <[email protected]>
Cc: Borislav Petkov <[email protected]>
Cc: Christian Knig <[email protected]>
Cc: Christoph Lameter <[email protected]>
Cc: Daniel Vetter <[email protected]>
Cc: Daniel Vetter <[email protected]>
Cc: David Airlie <[email protected]>
Cc: David Rientjes <[email protected]>
Cc: Gustavo Padovan <[email protected]>
Cc: James Morse <[email protected]>
Cc: Jaroslav Kysela <[email protected]>
Cc: Jason Wang <[email protected]>
Cc: Joonsoo Kim <[email protected]>
Cc: Linus Walleij <[email protected]>
Cc: Maarten Lankhorst <[email protected]>
Cc: Mauro Carvalho Chehab <[email protected]>
Cc: Maxime Ripard <[email protected]>
Cc: "Michael S . Tsirkin" <[email protected]>
Cc: Pekka Enberg <[email protected]>
Cc: Robert Richter <[email protected]>
Cc: Sumit Semwal <[email protected]>
Cc: Takashi Iwai <[email protected]>
Cc: Takashi Iwai <[email protected]>
Cc: Thomas Zimmermann <[email protected]>
Cc: Tony Luck <[email protected]>
Cc: Vlastimil Babka <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
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Use the helper that checks for overflows internally instead of manually
calculating the size of the new array.
Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Bartosz Golaszewski <[email protected]>
Acked-by: Daniel Vetter <[email protected]>
Cc: Alexander Shishkin <[email protected]>
Cc: Andy Shevchenko <[email protected]>
Cc: Borislav Petkov <[email protected]>
Cc: Borislav Petkov <[email protected]>
Cc: Christian Knig <[email protected]>
Cc: Christoph Lameter <[email protected]>
Cc: Daniel Vetter <[email protected]>
Cc: David Airlie <[email protected]>
Cc: David Rientjes <[email protected]>
Cc: Gustavo Padovan <[email protected]>
Cc: James Morse <[email protected]>
Cc: Jaroslav Kysela <[email protected]>
Cc: Jason Wang <[email protected]>
Cc: Joonsoo Kim <[email protected]>
Cc: Linus Walleij <[email protected]>
Cc: Maarten Lankhorst <[email protected]>
Cc: Mauro Carvalho Chehab <[email protected]>
Cc: Maxime Ripard <[email protected]>
Cc: "Michael S . Tsirkin" <[email protected]>
Cc: Pekka Enberg <[email protected]>
Cc: Robert Richter <[email protected]>
Cc: Sumit Semwal <[email protected]>
Cc: Takashi Iwai <[email protected]>
Cc: Takashi Iwai <[email protected]>
Cc: Thomas Zimmermann <[email protected]>
Cc: Tony Luck <[email protected]>
Cc: Vlastimil Babka <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
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Use the helper that checks for overflows internally instead of manually
calculating the size of the new array.
Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Bartosz Golaszewski <[email protected]>
Acked-by: Borislav Petkov <[email protected]>
Cc: Alexander Shishkin <[email protected]>
Cc: Andy Shevchenko <[email protected]>
Cc: Borislav Petkov <[email protected]>
Cc: Christian Knig <[email protected]>
Cc: Christoph Lameter <[email protected]>
Cc: Daniel Vetter <[email protected]>
Cc: Daniel Vetter <[email protected]>
Cc: David Airlie <[email protected]>
Cc: David Rientjes <[email protected]>
Cc: Gustavo Padovan <[email protected]>
Cc: James Morse <[email protected]>
Cc: Jaroslav Kysela <[email protected]>
Cc: Jason Wang <[email protected]>
Cc: Joonsoo Kim <[email protected]>
Cc: Linus Walleij <[email protected]>
Cc: Maarten Lankhorst <[email protected]>
Cc: Mauro Carvalho Chehab <[email protected]>
Cc: Maxime Ripard <[email protected]>
Cc: "Michael S . Tsirkin" <[email protected]>
Cc: Pekka Enberg <[email protected]>
Cc: Robert Richter <[email protected]>
Cc: Sumit Semwal <[email protected]>
Cc: Takashi Iwai <[email protected]>
Cc: Takashi Iwai <[email protected]>
Cc: Thomas Zimmermann <[email protected]>
Cc: Tony Luck <[email protected]>
Cc: Vlastimil Babka <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
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Use the helper that checks for overflows internally instead of manually
calculating the size of the new array.
Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Bartosz Golaszewski <[email protected]>
Reviewed-by: Andy Shevchenko <[email protected]>
Cc: Alexander Shishkin <[email protected]>
Cc: Borislav Petkov <[email protected]>
Cc: Borislav Petkov <[email protected]>
Cc: Christian Knig <[email protected]>
Cc: Christoph Lameter <[email protected]>
Cc: Daniel Vetter <[email protected]>
Cc: Daniel Vetter <[email protected]>
Cc: David Airlie <[email protected]>
Cc: David Rientjes <[email protected]>
Cc: Gustavo Padovan <[email protected]>
Cc: James Morse <[email protected]>
Cc: Jaroslav Kysela <[email protected]>
Cc: Jason Wang <[email protected]>
Cc: Joonsoo Kim <[email protected]>
Cc: Linus Walleij <[email protected]>
Cc: Maarten Lankhorst <[email protected]>
Cc: Mauro Carvalho Chehab <[email protected]>
Cc: Maxime Ripard <[email protected]>
Cc: "Michael S . Tsirkin" <[email protected]>
Cc: Pekka Enberg <[email protected]>
Cc: Robert Richter <[email protected]>
Cc: Sumit Semwal <[email protected]>
Cc: Takashi Iwai <[email protected]>
Cc: Takashi Iwai <[email protected]>
Cc: Thomas Zimmermann <[email protected]>
Cc: Tony Luck <[email protected]>
Cc: Vlastimil Babka <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
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Use the helper that checks for overflows internally instead of manually
calculating the size of the new array.
Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Bartosz Golaszewski <[email protected]>
Acked-by: Michael S. Tsirkin <[email protected]>
Cc: Alexander Shishkin <[email protected]>
Cc: Andy Shevchenko <[email protected]>
Cc: Borislav Petkov <[email protected]>
Cc: Borislav Petkov <[email protected]>
Cc: Christian Knig <[email protected]>
Cc: Christoph Lameter <[email protected]>
Cc: Daniel Vetter <[email protected]>
Cc: Daniel Vetter <[email protected]>
Cc: David Airlie <[email protected]>
Cc: David Rientjes <[email protected]>
Cc: Gustavo Padovan <[email protected]>
Cc: James Morse <[email protected]>
Cc: Jaroslav Kysela <[email protected]>
Cc: Jason Wang <[email protected]>
Cc: Joonsoo Kim <[email protected]>
Cc: Linus Walleij <[email protected]>
Cc: Maarten Lankhorst <[email protected]>
Cc: Mauro Carvalho Chehab <[email protected]>
Cc: Maxime Ripard <[email protected]>
Cc: Pekka Enberg <[email protected]>
Cc: Robert Richter <[email protected]>
Cc: Sumit Semwal <[email protected]>
Cc: Takashi Iwai <[email protected]>
Cc: Takashi Iwai <[email protected]>
Cc: Thomas Zimmermann <[email protected]>
Cc: Tony Luck <[email protected]>
Cc: Vlastimil Babka <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
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In the discussion about preempt count consistency across kernel
configurations:
https://lore.kernel.org/r/[email protected]/
it was concluded that the usage of in_interrupt() and related context
checks should be removed from non-core code.
Both BUG_ON()s in ide-probe.c were introduced in commit
4015c949fb465 ("[PATCH] update ide core")
when ide_unregister() was extended with semaphore based locking. Both
checks won't complain about disabled preemption which is also wrong.
The might_sleep() in today's mutex_lock() will complain about the
missuses.
Remove the BUG_ON() statements.
Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Sebastian Andrzej Siewior <[email protected]>
Acked-by: Jens Axboe <[email protected]>
Cc: "David S. Miller" <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
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falconide_get_lock() is called by ide_lock_host() and its caller
(ide_issue_rq()) has already a might_sleep() check.
stdma_lock() has wait_event() which also has a might_sleep() check.
Remove the in_interrupt() check.
Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Sebastian Andrzej Siewior <[email protected]>
Cc: "David S. Miller" <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
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Prevent build failure if the option CONFIG_ENERGY_MODEL is not set. The
devfreq cooling is able to operate without the Energy Model.
Don't use dev->em_pd directly and use local pointer.
Fixes: 615510fe13bd2 ("thermal: devfreq_cooling: remove old power model and use EM")
Reported-by: Stephen Rothwell <[email protected]>
Signed-off-by: Lukasz Luba <[email protected]>
Signed-off-by: Daniel Lezcano <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
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The ops is only showing a trace telling a critical trip point is
crossed. The same information is given by the thermal framework.
This is redundant, remove the code.
Signed-off-by: Daniel Lezcano <[email protected]>
Reviewed-by: Niklas Söderlund <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
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* acpi-ec:
ACPI: EC: Clean up status flags checks in advance_transaction()
ACPI: EC: Untangle error handling in advance_transaction()
ACPI: EC: Simplify error handling in advance_transaction()
ACPI: EC: Rename acpi_ec_is_gpe_raised()
ACPI: EC: Fold acpi_ec_clear_gpe() into its caller
ACPI: EC: Eliminate in_interrupt() usage
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* acpi-apei:
ACPI, APEI: make apei_resources_all static
* acpi-misc:
ACPI: acpi_drivers.h: Update the kernel doc
ACPI: acpi_drivers.h: Remove the leftover dead code
ACPI: tiny-power-button: Simplify the code using module_acpi_driver()
ACPI: SBS: Simplify the code using module_acpi_driver()
ACPI: SBS: Simplify the driver init code
ACPI: debug: Remove the not used function
ACPI: processor: Remove the duplicated ACPI_PROCESSOR_CLASS macro
* acpi-processor:
ACPI: processor: Drop duplicate setting of shared_cpu_map
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* acpi-resources:
Revert "ACPI / resources: Use AE_CTRL_TERMINATE to terminate resources walks"
resource: provide meaningful MODULE_LICENSE() in test suite
ASoC: Intel: catpt: Replace open coded variant of resource_intersection()
ACPI: watchdog: Replace open coded variant of resource_union()
PCI/ACPI: Replace open coded variant of resource_union()
resource: Add test cases for new resource API
resource: Introduce resource_intersection() for overlapping resources
resource: Introduce resource_union() for overlapping resources
resource: Group resource_overlaps() with other inline helpers
resource: Simplify region_intersects() by reducing conditionals
* acpi-docs:
Documentation: ACPI: enumeration: add PCI hierarchy representation
Documentation: ACPI: _DSD: enable hyperlink in final references
Documentation: ACPI: explain how to use gpio-line-names
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* acpica:
ACPICA: Update version to 20201113
ACPICA: Interpreter: fix memory leak by using existing buffer
ACPICA: Add function trace macros to improve debugging
ACPICA: Also handle "orphan" _REG methods for GPIO OpRegions
ACPICA: Remove extreaneous "the" in comments
ACPICA: Add 5 new UUIDs to the known UUID table
* acpi-scan:
ACPI: scan: Fix up _DEP-related terminology with supplier/consumer
ACPI: scan: Drop INT3396 from acpi_ignore_dep_ids[]
ACPI: scan: Add PNP0D80 to the _DEP exceptions list
ACPI: scan: Call acpi_get_object_info() from acpi_add_single_object()
ACPI: scan: Add acpi_info_matches_hids() helper
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* pm-devfreq:
PM / devfreq: tegra30: Separate configurations per-SoC generation
PM / devfreq: tegra30: Support interconnect and OPPs from device-tree
PM / devfreq: tegra20: Deprecate in a favor of emc-stat based driver
PM / devfreq: exynos-bus: Add registration of interconnect child device
dt-bindings: devfreq: Add documentation for the interconnect properties
soc/tegra: fuse: Add stub for tegra_sku_info
soc/tegra: fuse: Export tegra_read_ram_code()
clk: tegra: Export Tegra20 EMC kernel symbols
PM / devfreq: tegra30: Silence deferred probe error
PM / devfreq: tegra20: Relax Kconfig dependency
PM / devfreq: tegra20: Silence deferred probe error
PM / devfreq: Remove redundant governor_name from struct devfreq
PM / devfreq: Add governor attribute flag for specifc sysfs nodes
PM / devfreq: Add governor feature flag
PM / devfreq: Add tracepoint for frequency changes
PM / devfreq: Unify frequency change to devfreq_update_target func
trace: events: devfreq: Use fixed indentation size to improve readability
* pm-tools:
pm-graph v5.8
cpupower: Provide online and offline CPU information
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* pm-sleep:
PM: sleep: Add dev_wakeup_path() helper
PM / suspend: fix kernel-doc markup
PM: sleep: Print driver flags for all devices during suspend/resume
* pm-acpi:
PM: ACPI: Refresh wakeup device power configuration every time
PM: ACPI: PCI: Drop acpi_pm_set_bridge_wakeup()
PM: ACPI: reboot: Use S5 for reboot
* pm-domains:
PM: domains: create debugfs nodes when adding power domains
PM: domains: replace -ENOTSUPP with -EOPNOTSUPP
* powercap:
powercap: Adjust printing the constraint name with new line
powercap: RAPL: Add AMD Fam19h RAPL support
powercap: Add AMD Fam17h RAPL support
powercap/intel_rapl_msr: Convert rapl_msr_priv into pointer
x86/msr-index: sort AMD RAPL MSRs by address
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* pm-cpuidle:
cpuidle: Select polling interval based on a c-state with a longer target residency
cpuidle: psci: Enable suspend-to-idle for PSCI OSI mode
PM: domains: Enable dev_pm_genpd_suspend|resume() for suspend-to-idle
PM: domains: Rename pm_genpd_syscore_poweroff|poweron()
* pm-em:
PM / EM: Micro optimization in em_cpu_energy
PM: EM: Update Energy Model with new flag indicating power scale
PM: EM: update the comments related to power scale
PM: EM: Clarify abstract scale usage for power values in Energy Model
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* pm-cpufreq: (31 commits)
cpufreq: Fix cpufreq_online() return value on errors
cpufreq: Fix up several kerneldoc comments
cpufreq: stats: Use local_clock() instead of jiffies
cpufreq: schedutil: Simplify sugov_update_next_freq()
cpufreq: intel_pstate: Simplify intel_cpufreq_update_pstate()
cpufreq: arm_scmi: Discover the power scale in performance protocol
firmware: arm_scmi: Add power_scale_mw_get() interface
cpufreq: tegra194: Rename tegra194_get_speed_common function
cpufreq: tegra194: Remove unnecessary frequency calculation
cpufreq: tegra186: Simplify cluster information lookup
cpufreq: tegra186: Fix sparse 'incorrect type in assignment' warning
cpufreq: imx: fix NVMEM_IMX_OCOTP dependency
cpufreq: vexpress-spc: Add missing MODULE_ALIAS
cpufreq: scpi: Add missing MODULE_ALIAS
cpufreq: loongson1: Add missing MODULE_ALIAS
cpufreq: sun50i: Add missing MODULE_DEVICE_TABLE
cpufreq: st: Add missing MODULE_DEVICE_TABLE
cpufreq: qcom: Add missing MODULE_DEVICE_TABLE
cpufreq: mediatek: Add missing MODULE_DEVICE_TABLE
cpufreq: highbank: Add missing MODULE_DEVICE_TABLE
...
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git://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms into irq/core
Pull irqchip updates for 5.11 from Marc Zyngier:
- Preliminary support for managed interrupts on platform devices
- Correctly identify allocation of MSIs proxyied by another device
- Remove the fasteoi IPI flow which has been proved useless
- Generalise the Ocelot support to new SoCs
- Improve GICv4.1 vcpu entry, matching the corresponding KVM optimisation
- Work around spurious interrupts on Qualcomm PDC
- Random fixes and cleanups
Link: https://lore.kernel.org/r/[email protected]
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The || condition in hdev->fd_active_type != HCLGE_FD_ARFS_ACTIVE ||
hdev->fd_active_type != HCLGE_FD_RULE_NONE will always be true because
hdev->fd_active_type cannot be equal to two different values at the same
time. The expression is always true which is not correct. Fix this by
replacing || with && to correct the logic in the expression.
Addresses-Coverity: ("Constant expression result")
Fixes: 0205ec041ec6 ("net: hns3: add support for hw tc offload of tc flower")
Signed-off-by: Colin Ian King <[email protected]>
Reviewed-by: Huazhong Tan <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Jakub Kicinski <[email protected]>
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Replace a comma between expression statements by a semicolon.
Signed-off-by: Zheng Yongjun <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Jakub Kicinski <[email protected]>
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context
Currently ocelot_set_rx_mode calls ocelot_mact_learn directly, which has
a very nice ocelot_mact_wait_for_completion at the end. Introduced in
commit 639c1b2625af ("net: mscc: ocelot: Register poll timeout should be
wall time not attempts"), this function uses readx_poll_timeout which
triggers a lot of lockdep warnings and is also dangerous to use from
atomic context, potentially leading to lockups and panics.
Steen Hegelund added a poll timeout of 100 ms for checking the MAC
table, a duration which is clearly absurd to poll in atomic context.
So we need to defer the MAC table access to process context, which we do
via a dynamically allocated workqueue which contains all there is to
know about the MAC table operation it has to do.
Signed-off-by: Vladimir Oltean <[email protected]>
Reviewed-by: Florian Fainelli <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Jakub Kicinski <[email protected]>
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add the code to release the nfc firmware when the firmware image size is
wrong.
Fixes: c04c674fadeb ("nfc: s3fwrn5: Add driver for Samsung S3FWRN5 NFC Chip")
Signed-off-by: Bongsu Jeon <[email protected]>
Reviewed-by: Krzysztof Kozlowski <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Jakub Kicinski <[email protected]>
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This code is copying strings in 64 bit quantities, the device
returns them in big endian. As long as we store in big endian
IOW endian on both sides matches, we're good, so swap to_be64,
not from be64.
This fixes ~60 sparse warnings.
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Jakub Kicinski <[email protected]>
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git://git.kernel.org/pub/scm/linux/kernel/git/mkl/linux-can-next
Marc Kleine-Budde says:
====================
pull-request: can-next 2020-12-14
All 7 patches are by me and target the m_can driver. First there are 4 cleanup
patches (fix link to doc, fix coding style, uniform variable name usage, mark
function as static). Then the driver is converted to
pm_runtime_resume_and_get(). The next patch lets the m_can class driver
allocate the driver's private data, to get rid of one level of indirection. And
the last patch consistently uses struct m_can_classdev as drvdata over all
binding drivers.
* tag 'linux-can-next-for-5.11-20201214' of git://git.kernel.org/pub/scm/linux/kernel/git/mkl/linux-can-next:
can: m_can: use struct m_can_classdev as drvdata
can: m_can: let m_can_class_allocate_dev() allocate driver specific private data
can: m_can: m_can_clk_start(): make use of pm_runtime_resume_and_get()
can: m_can: m_can_config_endisable(): mark as static
can: m_can: use cdev as name for struct m_can_classdev uniformly
can: m_can: convert indention to kernel coding style
can: m_can: update link to M_CAN user manual
====================
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Jakub Kicinski <[email protected]>
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In case the eXtended mezzanine is present on the system, use it for IPv4
router offload.
Signed-off-by: Jiri Pirko <[email protected]>
Signed-off-by: Ido Schimmel <[email protected]>
Signed-off-by: Jakub Kicinski <[email protected]>
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Set a profile option to instruct FW to use 1/2 of KVH for XLT cache, not
the whole one.
Signed-off-by: Jiri Pirko <[email protected]>
Signed-off-by: Ido Schimmel <[email protected]>
Signed-off-by: Jakub Kicinski <[email protected]>
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Upon route insertion and removal, it is needed to flush possibly cached
entries from the XM cache. Extend XM op context to carry information
needed for the flush. Implement the flush in delayed work since for HW
design reasons there is a need to wait 50usec before the flush can be
done. If during this time comes the same flush request, consolidate it
to the first one. Implement this queued flushes by a hashtable.
v2:
* Fix GENMASK() high bit
Signed-off-by: Jiri Pirko <[email protected]>
Signed-off-by: Ido Schimmel <[email protected]>
Signed-off-by: Jakub Kicinski <[email protected]>
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The RLPMCE allows disabling the LPM cache. Can be changed on the fly.
Signed-off-by: Jiri Pirko <[email protected]>
Signed-off-by: Ido Schimmel <[email protected]>
Signed-off-by: Jakub Kicinski <[email protected]>
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The RLCMLD register is used to bulk delete the XLT-LPM cache ML entries.
This can be used by SW when L is increased or decreased, thus need to
remove entries with old ML values.
Signed-off-by: Jiri Pirko <[email protected]>
Signed-off-by: Ido Schimmel <[email protected]>
Signed-off-by: Jakub Kicinski <[email protected]>
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There is a table that assigns L-value per M-index. The L is always the
biggest from the currently inserted prefixes. Setup a hashtable to track
the M-index information and the prefixes that are related to it. Ensure
the L-value is always correctly set.
Signed-off-by: Jiri Pirko <[email protected]>
Signed-off-by: Ido Schimmel <[email protected]>
Signed-off-by: Jakub Kicinski <[email protected]>
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The XRMT configures the M-Table for the XLT-LPM.
Signed-off-by: Jiri Pirko <[email protected]>
Signed-off-by: Ido Schimmel <[email protected]>
Signed-off-by: Jakub Kicinski <[email protected]>
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During the router init flow, call into XM code and initialize couple of
items needed for XM functionality:
1) Query the capabilities and sizes. Check the XM device id.
2) Initialize the M-value. Note that currently the M-value is set fixed
to 16 for IPv4. In future this may change to better cover the actual
inserted routes.
Signed-off-by: Jiri Pirko <[email protected]>
Signed-off-by: Ido Schimmel <[email protected]>
Signed-off-by: Jakub Kicinski <[email protected]>
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The XLTQ is used to query HW for XM-related info.
Signed-off-by: Jiri Pirko <[email protected]>
Signed-off-by: Ido Schimmel <[email protected]>
Signed-off-by: Jakub Kicinski <[email protected]>
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The RXLTM configures and selects the M for the XM lookups.
Signed-off-by: Jiri Pirko <[email protected]>
Signed-off-by: Ido Schimmel <[email protected]>
Signed-off-by: Jakub Kicinski <[email protected]>
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Use the info stored in the bus_info struct about the eXtended mezanine
connected ports and don't expose them.
Signed-off-by: Jiri Pirko <[email protected]>
Signed-off-by: Ido Schimmel <[email protected]>
Signed-off-by: Jakub Kicinski <[email protected]>
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The output of boardinfo command was extended to contain information
about XM. Indicates if is present and in case it is, tells which
localports are used for the connection. So parse this info and store it
in bus_info passed up to the driver.
Signed-off-by: Jiri Pirko <[email protected]>
Signed-off-by: Ido Schimmel <[email protected]>
Signed-off-by: Jakub Kicinski <[email protected]>
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In order to offload entries to XM, implement a set of low-level
functions to work with LPM trees in XM and also to pack and write
FIB entries into XM.
Signed-off-by: Jiri Pirko <[email protected]>
Signed-off-by: Ido Schimmel <[email protected]>
Signed-off-by: Jakub Kicinski <[email protected]>
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The RXLTE enables XLT (eXtended Lookup Table) LPM lookups if a capable
XM is present on the system.
Signed-off-by: Jiri Pirko <[email protected]>
Signed-off-by: Ido Schimmel <[email protected]>
Signed-off-by: Jakub Kicinski <[email protected]>
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The XMDR allows direct access to the XM device via the switch.
Signed-off-by: Jiri Pirko <[email protected]>
Signed-off-by: Ido Schimmel <[email protected]>
Signed-off-by: Jakub Kicinski <[email protected]>
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 apic updates from Thomas Gleixner:
"Yet another large set of x86 interrupt management updates:
- Simplification and distangling of the MSI related functionality
- Let IO/APIC construct the RTE entries from an MSI message instead
of having IO/APIC specific code in the interrupt remapping drivers
- Make the retrieval of the parent interrupt domain (vector or remap
unit) less hardcoded and use the relevant irqdomain callbacks for
selection.
- Allow the handling of more than 255 CPUs without a virtualized
IOMMU when the hypervisor supports it. This has made been possible
by the above modifications and also simplifies the existing
workaround in the HyperV specific virtual IOMMU.
- Cleanup of the historical timer_works() irq flags related
inconsistencies"
* tag 'x86-apic-2020-12-14' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (42 commits)
x86/ioapic: Cleanup the timer_works() irqflags mess
iommu/hyper-v: Remove I/O-APIC ID check from hyperv_irq_remapping_select()
iommu/amd: Fix IOMMU interrupt generation in X2APIC mode
iommu/amd: Don't register interrupt remapping irqdomain when IR is disabled
iommu/amd: Fix union of bitfields in intcapxt support
x86/ioapic: Correct the PCI/ISA trigger type selection
x86/ioapic: Use I/O-APIC ID for finding irqdomain, not index
x86/hyperv: Enable 15-bit APIC ID if the hypervisor supports it
x86/kvm: Enable 15-bit extension when KVM_FEATURE_MSI_EXT_DEST_ID detected
iommu/hyper-v: Disable IRQ pseudo-remapping if 15 bit APIC IDs are available
x86/apic: Support 15 bits of APIC ID in MSI where available
x86/ioapic: Handle Extended Destination ID field in RTE
iommu/vt-d: Simplify intel_irq_remapping_select()
x86: Kill all traces of irq_remapping_get_irq_domain()
x86/ioapic: Use irq_find_matching_fwspec() to find remapping irqdomain
x86/hpet: Use irq_find_matching_fwspec() to find remapping irqdomain
iommu/hyper-v: Implement select() method on remapping irqdomain
iommu/vt-d: Implement select() method on remapping irqdomain
iommu/amd: Implement select() method on remapping irqdomain
x86/apic: Add select() method on vector irqdomain
...
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The current scheme allocates a DMA buffer as big as the requested
firmware package file and DMAs the contents to firmware in one
operation. The buffer size can be several hundred kilo bytes and
the driver may not be able to allocate the memory. This will cause
firmware upgrade to fail.
Improve the scheme by using smaller DMA blocks and calling firmware to
DMA each block in a batch mode. Older firmware can cause excessive
NVRAM erases if the block size is too small so we try to allocate a
256K buffer to begin with and size it down successively if we cannot
allocate the memory.
Reviewed-by: Edwin Peer <[email protected]>
Signed-off-by: Michael Chan <[email protected]>
Signed-off-by: Jakub Kicinski <[email protected]>
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In bnxt_flash_package_from_fw_obj(), if firmware returns the NO_SPACE
error, call __bnxt_flash_nvram() to create the UPDATE directory and
then loop back and retry one more time.
Since the first try may fail, we use the silent version to send the
firmware commands.
Reviewed-by: Vasundhara Volam <[email protected]>
Reviewed-by: Edwin Peer <[email protected]>
Signed-off-by: Pavan Chebbi <[email protected]>
Signed-off-by: Michael Chan <[email protected]>
Signed-off-by: Jakub Kicinski <[email protected]>
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On NICs with a smaller NVRAM, FW installation may fail after multiple
updates due to fragmentation. The driver can retry when FW returns
a special error code. To faciliate the retry, we restructure the
logic that performs the flashing in a loop. The actual retry logic
will be added in the next patch.
Signed-off-by: Pavan Chebbi <[email protected]>
Signed-off-by: Michael Chan <[email protected]>
Signed-off-by: Jakub Kicinski <[email protected]>
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This function will be modified in the next patch to retry flashing
the firmware in a loop. To facilate that, we rearrange the code so
that the steps that only need to be done once before the loop will be
moved to the top of the function.
Signed-off-by: Michael Chan <[email protected]>
Signed-off-by: Jakub Kicinski <[email protected]>
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Refactor bnxt_flash_nvram() into __bnxt_flash_nvram() that takes an
additional dir_item_len parameter. The new function will be used
in subsequent patches with the dir_item_len parameter set to create
the UPDATE directory during flashing.
Signed-off-by: Pavan Chebbi <[email protected]>
Signed-off-by: Michael Chan <[email protected]>
Signed-off-by: Jakub Kicinski <[email protected]>
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull scheduler updates from Thomas Gleixner:
- migrate_disable/enable() support which originates from the RT tree
and is now a prerequisite for the new preemptible kmap_local() API
which aims to replace kmap_atomic().
- A fair amount of topology and NUMA related improvements
- Improvements for the frequency invariant calculations
- Enhanced robustness for the global CPU priority tracking and decision
making
- The usual small fixes and enhancements all over the place
* tag 'sched-core-2020-12-14' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (61 commits)
sched/fair: Trivial correction of the newidle_balance() comment
sched/fair: Clear SMT siblings after determining the core is not idle
sched: Fix kernel-doc markup
x86: Print ratio freq_max/freq_base used in frequency invariance calculations
x86, sched: Use midpoint of max_boost and max_P for frequency invariance on AMD EPYC
x86, sched: Calculate frequency invariance for AMD systems
irq_work: Optimize irq_work_single()
smp: Cleanup smp_call_function*()
irq_work: Cleanup
sched: Limit the amount of NUMA imbalance that can exist at fork time
sched/numa: Allow a floating imbalance between NUMA nodes
sched: Avoid unnecessary calculation of load imbalance at clone time
sched/numa: Rename nr_running and break out the magic number
sched: Make migrate_disable/enable() independent of RT
sched/topology: Condition EAS enablement on FIE support
arm64: Rebuild sched domains on invariance status changes
sched/topology,schedutil: Wrap sched domains rebuild
sched/uclamp: Allow to reset a task uclamp constraint value
sched/core: Fix typos in comments
Documentation: scheduler: fix information on arch SD flags, sched_domain and sched_debug
...
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