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2022-01-05Merge branches 'for-next/misc', 'for-next/cache-ops-dzp', ↵Catalin Marinas1-17/+18
'for-next/stacktrace', 'for-next/xor-neon', 'for-next/kasan', 'for-next/armv8_7-fp', 'for-next/atomics', 'for-next/bti', 'for-next/sve', 'for-next/kselftest' and 'for-next/kcsan', remote-tracking branch 'arm64/for-next/perf' into for-next/core * arm64/for-next/perf: (32 commits) arm64: perf: Don't register user access sysctl handler multiple times drivers: perf: marvell_cn10k: fix an IS_ERR() vs NULL check perf/smmuv3: Fix unused variable warning when CONFIG_OF=n arm64: perf: Support new DT compatibles arm64: perf: Simplify registration boilerplate arm64: perf: Support Denver and Carmel PMUs drivers/perf: hisi: Add driver for HiSilicon PCIe PMU docs: perf: Add description for HiSilicon PCIe PMU driver dt-bindings: perf: Add YAML schemas for Marvell CN10K LLC-TAD pmu bindings drivers: perf: Add LLC-TAD perf counter support perf/smmuv3: Synthesize IIDR from CoreSight ID registers perf/smmuv3: Add devicetree support dt-bindings: Add Arm SMMUv3 PMCG binding perf/arm-cmn: Add debugfs topology info perf/arm-cmn: Add CI-700 Support dt-bindings: perf: arm-cmn: Add CI-700 perf/arm-cmn: Support new IP features perf/arm-cmn: Demarcate CMN-600 specifics perf/arm-cmn: Move group validation data off-stack perf/arm-cmn: Optimise DTC counter accesses ... * for-next/misc: : Miscellaneous patches arm64: Use correct method to calculate nomap region boundaries arm64: Drop outdated links in comments arm64: errata: Fix exec handling in erratum 1418040 workaround arm64: Unhash early pointer print plus improve comment asm-generic: introduce io_stop_wc() and add implementation for ARM64 arm64: remove __dma_*_area() aliases docs/arm64: delete a space from tagged-address-abi arm64/fp: Add comments documenting the usage of state restore functions arm64: mm: Use asid feature macro for cheanup arm64: mm: Rename asid2idx() to ctxid2asid() arm64: kexec: reduce calls to page_address() arm64: extable: remove unused ex_handler_t definition arm64: entry: Use SDEI event constants arm64: Simplify checking for populated DT arm64/kvm: Fix bitrotted comment for SVE handling in handle_exit.c * for-next/cache-ops-dzp: : Avoid DC instructions when DCZID_EL0.DZP == 1 arm64: mte: DC {GVA,GZVA} shouldn't be used when DCZID_EL0.DZP == 1 arm64: clear_page() shouldn't use DC ZVA when DCZID_EL0.DZP == 1 * for-next/stacktrace: : Unify the arm64 unwind code arm64: Make some stacktrace functions private arm64: Make dump_backtrace() use arch_stack_walk() arm64: Make profile_pc() use arch_stack_walk() arm64: Make return_address() use arch_stack_walk() arm64: Make __get_wchan() use arch_stack_walk() arm64: Make perf_callchain_kernel() use arch_stack_walk() arm64: Mark __switch_to() as __sched arm64: Add comment for stack_info::kr_cur arch: Make ARCH_STACKWALK independent of STACKTRACE * for-next/xor-neon: : Use SHA3 instructions to speed up XOR arm64/xor: use EOR3 instructions when available * for-next/kasan: : Log potential KASAN shadow aliases arm64: mm: log potential KASAN shadow alias arm64: mm: use die_kernel_fault() in do_mem_abort() * for-next/armv8_7-fp: : Add HWCAPS for ARMv8.7 FEAT_AFP amd FEAT_RPRES arm64: cpufeature: add HWCAP for FEAT_RPRES arm64: add ID_AA64ISAR2_EL1 sys register arm64: cpufeature: add HWCAP for FEAT_AFP * for-next/atomics: : arm64 atomics clean-ups and codegen improvements arm64: atomics: lse: define RETURN ops in terms of FETCH ops arm64: atomics: lse: improve constraints for simple ops arm64: atomics: lse: define ANDs in terms of ANDNOTs arm64: atomics lse: define SUBs in terms of ADDs arm64: atomics: format whitespace consistently * for-next/bti: : BTI clean-ups arm64: Ensure that the 'bti' macro is defined where linkage.h is included arm64: Use BTI C directly and unconditionally arm64: Unconditionally override SYM_FUNC macros arm64: Add macro version of the BTI instruction arm64: ftrace: add missing BTIs arm64: kexec: use __pa_symbol(empty_zero_page) arm64: update PAC description for kernel * for-next/sve: : SVE code clean-ups and refactoring in prepararation of Scalable Matrix Extensions arm64/sve: Minor clarification of ABI documentation arm64/sve: Generalise vector length configuration prctl() for SME arm64/sve: Make sysctl interface for SVE reusable by SME * for-next/kselftest: : arm64 kselftest additions kselftest/arm64: Add pidbench for floating point syscall cases kselftest/arm64: Add a test program to exercise the syscall ABI kselftest/arm64: Allow signal tests to trigger from a function kselftest/arm64: Parameterise ptrace vector length information * for-next/kcsan: : Enable KCSAN for arm64 arm64: Enable KCSAN
2022-01-05headers/deps: USB: Optimize <linux/usb/ch9.h> dependencies, remove ↵Ingo Molnar1-1/+2
<linux/device.h> The <linux/usb/ch9.h> header is used over 1,400 times in a typical distro build, but few of its users actually need the full <linux/device.h> header. -------------------------------------------------------------------- | Combined, preprocessed C code size of header, without line markers, | with comments stripped: ------------------------- before: | #include <linux/usb/ch9.h> | LOC: 7,078 | headers: 172 after: | #include <linux/usb/ch9.h> | LOC: 812 | headers: 38 Remove it and add it to the places that need it. Signed-off-by: Ingo Molnar <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]>
2022-01-05Merge tag 'linux-can-next-for-5.17-20220105' of ↵David S. Miller2-9/+20
git://git.kernel.org/pub/scm/linux/kernel/git/mkl/linux-can-next Marc Kleine-Budde says: ==================== pull-request: can-next 2022-01-05 this is a pull request of 15 patches for net-next/master. The first patch is by me and removed an unused variable from the usb_8dev driver. Andy Shevchenko contributes a patch for the mcp251x driver, which removes an unneeded assignment. Jimmy Assarsson's patch for the kvaser_usb makes use of units.h in the assignment of frequencies. Lad Prabhakar provides 2 patches, converting the ti_hecc and the sja1000 driver to make use of platform_get_irq(). The 10 remaining patches are by Vincent Mailhol. First the etas_es58x driver populates the net_device::dev_port. The next 5 patches cleanup the handling of CAN error and CAN RTR messages of all drivers. The remaining 4 patches enhance the CAN controller mode flag handling and export it via netlink to user space. ==================== Signed-off-by: David S. Miller <[email protected]>
2022-01-05net: mdio: add helpers to extract clause 45 regad and devad fieldsRussell King (Oracle)1-0/+12
Add a couple of helpers and definitions to extract the clause 45 regad and devad fields from the regnum passed into MDIO drivers. Tested-by: Daniel Golle <[email protected]> Reviewed-by: Andrew Lunn <[email protected]> Signed-off-by: Russell King (Oracle) <[email protected]> Signed-off-by: Daniel Golle <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2022-01-05can: dev: reorder struct can_priv members for better packingVincent Mailhol1-3/+3
Save eight bytes of holes on x86-64 architectures by reordering the members of struct can_priv. Before: | $ pahole -C can_priv drivers/net/can/dev/dev.o | struct can_priv { | struct net_device * dev; /* 0 8 */ | struct can_device_stats can_stats; /* 8 24 */ | const struct can_bittiming_const * bittiming_const; /* 32 8 */ | const struct can_bittiming_const * data_bittiming_const; /* 40 8 */ | struct can_bittiming bittiming; /* 48 32 */ | /* --- cacheline 1 boundary (64 bytes) was 16 bytes ago --- */ | struct can_bittiming data_bittiming; /* 80 32 */ | const struct can_tdc_const * tdc_const; /* 112 8 */ | struct can_tdc tdc; /* 120 12 */ | /* --- cacheline 2 boundary (128 bytes) was 4 bytes ago --- */ | unsigned int bitrate_const_cnt; /* 132 4 */ | const u32 * bitrate_const; /* 136 8 */ | const u32 * data_bitrate_const; /* 144 8 */ | unsigned int data_bitrate_const_cnt; /* 152 4 */ | u32 bitrate_max; /* 156 4 */ | struct can_clock clock; /* 160 4 */ | unsigned int termination_const_cnt; /* 164 4 */ | const u16 * termination_const; /* 168 8 */ | u16 termination; /* 176 2 */ | | /* XXX 6 bytes hole, try to pack */ | | struct gpio_desc * termination_gpio; /* 184 8 */ | /* --- cacheline 3 boundary (192 bytes) --- */ | u16 termination_gpio_ohms[2]; /* 192 4 */ | enum can_state state; /* 196 4 */ | u32 ctrlmode; /* 200 4 */ | u32 ctrlmode_supported; /* 204 4 */ | int restart_ms; /* 208 4 */ | | /* XXX 4 bytes hole, try to pack */ | | struct delayed_work restart_work; /* 216 88 */ | | /* XXX last struct has 4 bytes of padding */ | | /* --- cacheline 4 boundary (256 bytes) was 48 bytes ago --- */ | int (*do_set_bittiming)(struct net_device *); /* 304 8 */ | int (*do_set_data_bittiming)(struct net_device *); /* 312 8 */ | /* --- cacheline 5 boundary (320 bytes) --- */ | int (*do_set_mode)(struct net_device *, enum can_mode); /* 320 8 */ | int (*do_set_termination)(struct net_device *, u16); /* 328 8 */ | int (*do_get_state)(const struct net_device *, enum can_state *); /* 336 8 */ | int (*do_get_berr_counter)(const struct net_device *, struct can_berr_counter *); /* 344 8 */ | unsigned int echo_skb_max; /* 352 4 */ | | /* XXX 4 bytes hole, try to pack */ | | struct sk_buff * * echo_skb; /* 360 8 */ | | /* size: 368, cachelines: 6, members: 32 */ | /* sum members: 354, holes: 3, sum holes: 14 */ | /* paddings: 1, sum paddings: 4 */ | /* last cacheline: 48 bytes */ | }; After: | $ pahole -C can_priv drivers/net/can/dev/dev.o | struct can_priv { | struct net_device * dev; /* 0 8 */ | struct can_device_stats can_stats; /* 8 24 */ | const struct can_bittiming_const * bittiming_const; /* 32 8 */ | const struct can_bittiming_const * data_bittiming_const; /* 40 8 */ | struct can_bittiming bittiming; /* 48 32 */ | /* --- cacheline 1 boundary (64 bytes) was 16 bytes ago --- */ | struct can_bittiming data_bittiming; /* 80 32 */ | const struct can_tdc_const * tdc_const; /* 112 8 */ | struct can_tdc tdc; /* 120 12 */ | /* --- cacheline 2 boundary (128 bytes) was 4 bytes ago --- */ | unsigned int bitrate_const_cnt; /* 132 4 */ | const u32 * bitrate_const; /* 136 8 */ | const u32 * data_bitrate_const; /* 144 8 */ | unsigned int data_bitrate_const_cnt; /* 152 4 */ | u32 bitrate_max; /* 156 4 */ | struct can_clock clock; /* 160 4 */ | unsigned int termination_const_cnt; /* 164 4 */ | const u16 * termination_const; /* 168 8 */ | u16 termination; /* 176 2 */ | | /* XXX 6 bytes hole, try to pack */ | | struct gpio_desc * termination_gpio; /* 184 8 */ | /* --- cacheline 3 boundary (192 bytes) --- */ | u16 termination_gpio_ohms[2]; /* 192 4 */ | unsigned int echo_skb_max; /* 196 4 */ | struct sk_buff * * echo_skb; /* 200 8 */ | enum can_state state; /* 208 4 */ | u32 ctrlmode; /* 212 4 */ | u32 ctrlmode_supported; /* 216 4 */ | int restart_ms; /* 220 4 */ | struct delayed_work restart_work; /* 224 88 */ | | /* XXX last struct has 4 bytes of padding */ | | /* --- cacheline 4 boundary (256 bytes) was 56 bytes ago --- */ | int (*do_set_bittiming)(struct net_device *); /* 312 8 */ | /* --- cacheline 5 boundary (320 bytes) --- */ | int (*do_set_data_bittiming)(struct net_device *); /* 320 8 */ | int (*do_set_mode)(struct net_device *, enum can_mode); /* 328 8 */ | int (*do_set_termination)(struct net_device *, u16); /* 336 8 */ | int (*do_get_state)(const struct net_device *, enum can_state *); /* 344 8 */ | int (*do_get_berr_counter)(const struct net_device *, struct can_berr_counter *); /* 352 8 */ | | /* size: 360, cachelines: 6, members: 32 */ | /* sum members: 354, holes: 1, sum holes: 6 */ | /* paddings: 1, sum paddings: 4 */ | /* last cacheline: 40 bytes */ | }; Link: https://lore.kernel.org/all/[email protected] Signed-off-by: Vincent Mailhol <[email protected]> Signed-off-by: Marc Kleine-Budde <[email protected]>
2022-01-05can: dev: add sanity check in can_set_static_ctrlmode()Vincent Mailhol1-2/+9
Previous patch removed can_priv::ctrlmode_static to replace it with can_get_static_ctrlmode(). A condition sine qua non for this to work is that the controller static modes should never be set in can_priv::ctrlmode_supported (c.f. the comment on can_priv::ctrlmode_supported which states that it is for "options that can be *modified* by netlink"). Also, this condition is already correctly fulfilled by all existing drivers which rely on the ctrlmode_static feature. Nonetheless, we added an extra safeguard in can_set_static_ctrlmode() to return an error value and to warn the developer who would be adventurous enough to set to static a given feature that is already set to supported. The drivers which rely on the static controller mode are then updated to check the return value of can_set_static_ctrlmode(). Link: https://lore.kernel.org/all/[email protected] Signed-off-by: Vincent Mailhol <[email protected]> Signed-off-by: Marc Kleine-Budde <[email protected]>
2022-01-05can: dev: replace can_priv::ctrlmode_static by can_get_static_ctrlmode()Vincent Mailhol1-2/+5
The statically enabled features of a CAN controller can be retrieved using below formula: | u32 ctrlmode_static = priv->ctrlmode & ~priv->ctrlmode_supported; As such, there is no need to store this information. This patch remove the field ctrlmode_static of struct can_priv and provides, in replacement, the inline function can_get_static_ctrlmode() which returns the same value. Link: https://lore.kernel.org/all/[email protected] Signed-off-by: Vincent Mailhol <[email protected]> Signed-off-by: Marc Kleine-Budde <[email protected]>
2022-01-05can: do not increase tx_bytes statistics for RTR framesVincent Mailhol1-2/+3
The actual payload length of the CAN Remote Transmission Request (RTR) frames is always 0, i.e. no payload is transmitted on the wire. However, those RTR frames still use the DLC to indicate the length of the requested frame. As such, net_device_stats::tx_bytes should not be increased when sending RTR frames. The function can_get_echo_skb() already returns the correct length, even for RTR frames (c.f. [1]). However, for historical reasons, the drivers do not use can_get_echo_skb()'s return value and instead, most of them store a temporary length (or dlc) in some local structure or array. Using the return value of can_get_echo_skb() solves the issue. After doing this, such length/dlc fields become unused and so this patch does the adequate cleaning when needed. This patch fixes all the CAN drivers. Finally, can_get_echo_skb() is decorated with the __must_check attribute in order to force future drivers to correctly use its return value (else the compiler would emit a warning). [1] commit ed3320cec279 ("can: dev: __can_get_echo_skb(): fix real payload length return value for RTR frames") Link: https://lore.kernel.org/all/[email protected] Cc: Nicolas Ferre <[email protected]> Cc: Alexandre Belloni <[email protected]> Cc: Ludovic Desroches <[email protected]> Cc: Maxime Ripard <[email protected]> Cc: Chen-Yu Tsai <[email protected]> Cc: Jernej Skrabec <[email protected]> Cc: Yasushi SHOJI <[email protected]> Cc: Oliver Hartkopp <[email protected]> Cc: Stephane Grosjean <[email protected]> Cc: Andreas Larsson <[email protected]> Tested-by: Jimmy Assarsson <[email protected]> # kvaser Signed-off-by: Vincent Mailhol <[email protected]> Acked-by: Stefan Mätje <[email protected]> # esd_usb2 Tested-by: Stefan Mätje <[email protected]> # esd_usb2 [mkl: add conversion for grcan] Signed-off-by: Marc Kleine-Budde <[email protected]>
2022-01-05ata: libata: remove debug compilation switchesHannes Reinecke1-16/+0
Unused now, so remove and drop any references to them. Signed-off-by: Hannes Reinecke <[email protected]> Signed-off-by: Damien Le Moal <[email protected]>
2022-01-05ata: libata: remove 'new' ata message handlingHannes Reinecke1-13/+0
Remove the remaining bits for the 'new' ata message handling. Signed-off-by: Hannes Reinecke <[email protected]> Signed-off-by: Damien Le Moal <[email protected]>
2022-01-05ata: libata: drop ata_msg_drv()Hannes Reinecke1-6/+0
Callers are already protected by ata_dev_print_info(), so no need to have an additional configuration parameter here. Signed-off-by: Hannes Reinecke <[email protected]> Signed-off-by: Damien Le Moal <[email protected]>
2022-01-05ata: libata: drop ata_msg_info()Hannes Reinecke1-2/+0
Convert the sole caller to ata_dev_dbg() and remove the definition. Signed-off-by: Hannes Reinecke <[email protected]> Signed-off-by: Damien Le Moal <[email protected]>
2022-01-05ata: libata: drop ata_msg_probe()Hannes Reinecke1-2/+0
All callsites have been converted to dynamic debugging. Signed-off-by: Hannes Reinecke <[email protected]> Signed-off-by: Damien Le Moal <[email protected]>
2022-01-05ata: libata: drop ata_msg_warn()Hannes Reinecke1-2/+0
The WARN level was always enabled, so drop ata_msg_warn(). Signed-off-by: Hannes Reinecke <[email protected]> Signed-off-by: Damien Le Moal <[email protected]>
2022-01-05ata: libata: drop ata_msg_malloc()Hannes Reinecke1-2/+0
Unused. Signed-off-by: Hannes Reinecke <[email protected]> Signed-off-by: Damien Le Moal <[email protected]>
2022-01-05ata: libata: drop ata_msg_ctl()Hannes Reinecke1-2/+0
The one caller have been converted to dynamic debugging. Signed-off-by: Hannes Reinecke <[email protected]> Signed-off-by: Damien Le Moal <[email protected]>
2022-01-05ata: libata: drop ata_msg_error() and ata_msg_intr()Hannes Reinecke1-4/+0
Unused. Signed-off-by: Hannes Reinecke <[email protected]> Signed-off-by: Damien Le Moal <[email protected]>
2022-01-05ata: libata: move ata_{port,link,dev}_dbg to standard pr_XXX() macrosHannes Reinecke1-31/+38
Use standard pr_{debug,info,notice,warn,err} macros instead of the hand-crafted printk helpers. Signed-off-by: Hannes Reinecke <[email protected]> Signed-off-by: Damien Le Moal <[email protected]>
2022-01-04ACPI: PCC: Implement OperationRegion handler for the PCC Type 3 subtypeSudeep Holla1-0/+6
PCC OpRegion provides a mechanism to communicate with the platform directly from the AML. PCCT provides the list of PCC channel available in the platform, a subset or all of them can be used in PCC Opregion. This patch registers the PCC OpRegion handler before ACPI tables are loaded. This relies on the special context data passed to identify and set up the PCC channel before the OpRegion handler is executed for the first time. Typical PCC Opregion declaration looks like this: OperationRegion (PFRM, PCC, 2, 0x74) Field (PFRM, ByteAcc, NoLock, Preserve) { SIGN, 32, FLGS, 32, LEN, 32, CMD, 32, DATA, 800 } It contains four named double words followed by 100 bytes of buffer names DATA. ASL can fill out the buffer something like: /* Create global or local buffer */ Name (BUFF, Buffer (0x0C){}) /* Create double word fields over the buffer */ CreateDWordField (BUFF, 0x0, WD0) CreateDWordField (BUFF, 0x04, WD1) CreateDWordField (BUFF, 0x08, WD2) /* Fill the named fields */ WD0 = 0x50434300 SIGN = BUFF WD0 = 1 FLGS = BUFF WD0 = 0x10 LEN = BUFF /* Fill the payload in the DATA buffer */ WD0 = 0 WD1 = 0x08 WD2 = 0 DATA = BUFF /* Write to CMD field to trigger handler */ WD0 = 0x4404 CMD = BUFF This buffer is received by acpi_pcc_opregion_space_handler. This handler will fetch the complete buffer via internal_pcc_buffer. The setup handler will receive the special PCC context data which will contain the PCC channel index which used to set up the channel. The buffer pointer and length is saved in region context which is then used in the handler. (kernel test robot: Build failure with CONFIG_ACPI_DEBUGGER) Link: https://lore.kernel.org/r/[email protected] Reported-by: kernel test robot <[email protected]> Signed-off-by: Sudeep Holla <[email protected]> Signed-off-by: Rafael J. Wysocki <[email protected]>
2022-01-04filemap: Add filemap_release_folio()Matthew Wilcox (Oracle)2-1/+2
Reimplement try_to_release_page() as a wrapper around filemap_release_folio(). Signed-off-by: Matthew Wilcox (Oracle) <[email protected]> Reviewed-by: Christoph Hellwig <[email protected]> Reviewed-by: William Kucharski <[email protected]>
2022-01-04filemap: Add read_cache_folio and read_mapping_folioMatthew Wilcox (Oracle)1-2/+10
Reimplement read_cache_page() as a wrapper around read_cache_folio(). Saves over 400 bytes of text from do_read_cache_folio() which more than makes up for the extra 100 bytes of text added to the various wrapper functions. Signed-off-by: Matthew Wilcox (Oracle) <[email protected]> Reviewed-by: William Kucharski <[email protected]>
2022-01-04readahead: Convert page_cache_async_ra() to take a folioMatthew Wilcox (Oracle)1-2/+2
Using the folio here avoids checking whether it's a tail page. This patch mostly just enables some of the following patches. Signed-off-by: Matthew Wilcox (Oracle) <[email protected]> Reviewed-by: Christoph Hellwig <[email protected]> Reviewed-by: William Kucharski <[email protected]>
2022-01-04filemap: Remove thp_contains()Matthew Wilcox (Oracle)1-9/+0
This function is now unused, so delete it. Signed-off-by: Matthew Wilcox (Oracle) <[email protected]> Reviewed-by: Christoph Hellwig <[email protected]> Reviewed-by: William Kucharski <[email protected]>
2022-01-04filemap: Add filemap_remove_folio and __filemap_remove_folioMatthew Wilcox (Oracle)1-2/+7
Reimplement __delete_from_page_cache() as a wrapper around __filemap_remove_folio() and delete_from_page_cache() as a wrapper around filemap_remove_folio(). Remove the EXPORT_SYMBOL as delete_from_page_cache() was not used by any in-tree modules. Convert page_cache_free_page() into filemap_free_folio(). Signed-off-by: Matthew Wilcox (Oracle) <[email protected]> Reviewed-by: Christoph Hellwig <[email protected]> Reviewed-by: William Kucharski <[email protected]>
2022-01-04filemap: Add filemap_unaccount_folio()Matthew Wilcox (Oracle)1-5/+0
Replace unaccount_page_cache_page() with filemap_unaccount_folio(). The bug handling path could be a bit more robust (eg taking into account the mapcounts of tail pages), but it's really never supposed to happen. Signed-off-by: Matthew Wilcox (Oracle) <[email protected]> Reviewed-by: Christoph Hellwig <[email protected]> Reviewed-by: William Kucharski <[email protected]>
2022-01-04filemap: Add folio_put_wait_locked()Matthew Wilcox (Oracle)1-1/+1
Convert all three callers of put_and_wait_on_page_locked() to folio_put_wait_locked(). This shrinks the kernel overall by 19 bytes. filemap_update_page() shrinks by 19 bytes while __migration_entry_wait() is unchanged. folio_put_wait_locked() is 14 bytes smaller than put_and_wait_on_page_locked(), but pmd_migration_entry_wait() grows by 14 bytes. It removes the assumption from pmd_migration_entry_wait() that pages cannot be larger than a PMD (which is true today, but may be interesting to explore in the future). Signed-off-by: Matthew Wilcox (Oracle) <[email protected]> Reviewed-by: Christoph Hellwig <[email protected]> Reviewed-by: William Kucharski <[email protected]>
2022-01-04mm: Add folio_test_pmd_mappable()Matthew Wilcox (Oracle)2-21/+35
Add a predicate to determine if the folio might be mapped by a PMD entry. If CONFIG_TRANSPARENT_HUGEPAGE is disabled, we know it can't be, even if it's large enough. Signed-off-by: Matthew Wilcox (Oracle) <[email protected]> Reviewed-by: Christoph Hellwig <[email protected]> Reviewed-by: William Kucharski <[email protected]>
2022-01-04iov_iter: Add copy_folio_to_iter()Matthew Wilcox (Oracle)1-0/+7
This wrapper around copy_page_to_iter() works because copy_page_to_iter() handles compound pages correctly. Signed-off-by: Matthew Wilcox (Oracle) <[email protected]> Reviewed-by: William Kucharski <[email protected]>
2022-01-04headers/uninline: Uninline single-use function: kobject_has_children()Ingo Molnar1-17/+0
This was the only usage of <linux/kref_api.h> in <linux/kobject_api.h>, so we'll able to decouple the two after this change. Signed-off-by: Ingo Molnar <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]>
2022-01-04icmp: ICMPV6: Examine invoking packet for Segment Route Headers.Andrew Lunn1-0/+2
RFC8754 says: ICMP error packets generated within the SR domain are sent to source nodes within the SR domain. The invoking packet in the ICMP error message may contain an SRH. Since the destination address of a packet with an SRH changes as each segment is processed, it may not be the destination used by the socket or application that generated the invoking packet. For the source of an invoking packet to process the ICMP error message, the ultimate destination address of the IPv6 header may be required. The following logic is used to determine the destination address for use by protocol-error handlers. * Walk all extension headers of the invoking IPv6 packet to the routing extension header preceding the upper-layer header. - If routing header is type 4 Segment Routing Header (SRH) o The SID at Segment List[0] may be used as the destination address of the invoking packet. Mangle the skb so the network header points to the invoking packet inside the ICMP packet. The seg6 helpers can then be used on the skb to find any segment routing headers. If found, mark this fact in the IPv6 control block of the skb, and store the offset into the packet of the SRH. Then restore the skb back to its old state. Signed-off-by: Andrew Lunn <[email protected]> Reviewed-by: David Ahern <[email protected]> Reviewed-by: Willem de Bruijn <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2022-01-04ata: libata: Add ata_port_classify() helperHannes Reinecke1-0/+2
Add an ata_port_classify() helper to print out the results from the device classification and remove the debugging statements from ata_dev_classify(). Signed-off-by: Hannes Reinecke <[email protected]> Signed-off-by: Damien Le Moal <[email protected]>
2022-01-04Merge branches 'arm/smmu', 'virtio', 'x86/amd', 'x86/vt-d' and 'core' into nextJoerg Roedel3-74/+3
2022-01-03pktcdvd: convert to use attribute groupsGreg Kroah-Hartman1-10/+0
There is no need to create kobject children of the pktcdvd device just to display a subdirectory name. Instead, use a named attribute group which removes the extra kobjects and also fixes the userspace race where the device is created yet tools like libudev can not see the attributes as they think the subdirectories are some other sort of device. Cc: [email protected] Cc: Jens Axboe <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Jens Axboe <[email protected]>
2022-01-03power: supply_core: Pass pointer to battery infoLinus Walleij1-1/+1
The function to retrieve battery info (from the device tree) assumes we have a static info struct that gets populated by calling into power_supply_get_battery_info(). This is awkward since I want to support tables of static battery info by just assigning a pointer to all info based on e.g. a compatible value in the device tree. We also have a mixture of static and dynamically allocated variables here. Bite the bullet and let power_supply_get_battery_info() allocate also the memory used for the very top level struct power_supply_battery_info container. Pass pointers around and lifecycle this with the psy device just like the stuff we allocate inside it. Change all current users over. As part of the change, initializers need to be added to some previously uninitialized fields in struct power_supply_battery_info. Reviewed-By: Matti Vaittinen <[email protected]> Signed-off-by: Linus Walleij <[email protected]> Signed-off-by: Sebastian Reichel <[email protected]>
2022-01-03Merge 5.16-rc8 into char-misc-nextGreg Kroah-Hartman11-14/+42
We need the fixes in here as well for testing. Signed-off-by: Greg Kroah-Hartman <[email protected]>
2022-01-03Merge 5.16-rc8 into usb-nextGreg Kroah-Hartman11-14/+42
We need the USB fixes in here as well. Signed-off-by: Greg Kroah-Hartman <[email protected]>
2022-01-03dmaengine: xilinx_dpdma: use correct SDPX tag for header fileVinod Koul1-1/+1
Commit 188c310bdd5d ("dmaengine: xilinx_dpdma: stop using slave_id field") add the header file with incorrect format for SPDX tag, fix that WARNING: Improper SPDX comment style for 'include/linux/dma/xilinx_dpdma.h', please use '/*' instead #1: FILE: include/linux/dma/xilinx_dpdma.h:1: +// SPDX-License-Identifier: GPL-2.0 WARNING: Missing or malformed SPDX-License-Identifier tag in line 1 #1: FILE: include/linux/dma/xilinx_dpdma.h:1: +// SPDX-License-Identifier: GPL-2.0 Fixes: 188c310bdd5d ("dmaengine: xilinx_dpdma: stop using slave_id field") Signed-off-by: Vinod Koul <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Vinod Koul <[email protected]>
2022-01-02pagevec: Add folio_batchMatthew Wilcox (Oracle)1-0/+69
The folio_batch is the same as the pagevec, except that it is typed to contain folios and not pages. Signed-off-by: Matthew Wilcox (Oracle) <[email protected]> Reviewed-by: William Kucharski <[email protected]>
2022-01-02mm/doc: Add documentation for folio_test_uptodateMatthew Wilcox (Oracle)1-3/+10
Move the PG_uptodate documentation to be documentation for folio_test_uptodate() and expand on it a little. Signed-off-by: Matthew Wilcox (Oracle) <[email protected]> Reviewed-by: Christoph Hellwig <[email protected]> Reviewed-by: William Kucharski <[email protected]>
2022-01-02net: phy: lynx: refactor Lynx PCS module to use generic phylink_pcsColin Foster1-6/+3
Remove references to lynx_pcs structures so drivers like the Felix DSA can reference alternate PCS drivers. Signed-off-by: Colin Foster <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2021-12-31mm: vmscan: Reduce throttling due to a failure to make progressMel Gorman1-0/+1
Mike Galbraith, Alexey Avramov and Darrick Wong all reported similar problems due to reclaim throttling for excessive lengths of time. In Alexey's case, a memory hog that should go OOM quickly stalls for several minutes before stalling. In Mike and Darrick's cases, a small memcg environment stalled excessively even though the system had enough memory overall. Commit 69392a403f49 ("mm/vmscan: throttle reclaim when no progress is being made") introduced the problem although commit a19594ca4a8b ("mm/vmscan: increase the timeout if page reclaim is not making progress") made it worse. Systems at or near an OOM state that cannot be recovered must reach OOM quickly and memcg should kill tasks if a memcg is near OOM. To address this, only stall for the first zone in the zonelist, reduce the timeout to 1 tick for VMSCAN_THROTTLE_NOPROGRESS and only stall if the scan control nr_reclaimed is 0, kswapd is still active and there were excessive pages pending for writeback. If kswapd has stopped reclaiming due to excessive failures, do not stall at all so that OOM triggers relatively quickly. Similarly, if an LRU is simply congested, only lightly throttle similar to NOPROGRESS. Alexey's original case was the most straight forward for i in {1..3}; do tail /dev/zero; done On vanilla 5.16-rc1, this test stalled heavily, after the patch the test completes in a few seconds similar to 5.15. Alexey's second test case added watching a youtube video while tail runs 10 times. On 5.15, playback only jitters slightly, 5.16-rc1 stalls a lot with lots of frames missing and numerous audio glitches. With this patch applies, the video plays similarly to 5.15. [[email protected]: Fix W=1 build warning] Link: https://lore.kernel.org/r/[email protected] Link: https://lore.kernel.org/r/[email protected] Link: https://lore.kernel.org/r/[email protected] Link: https://lore.kernel.org/r/[email protected] Link: https://linux-regtracking.leemhuis.info/regzbot/regression/[email protected]/ Reported-and-tested-by: Alexey Avramov <[email protected]> Reported-and-tested-by: Mike Galbraith <[email protected]> Reported-and-tested-by: Darrick J. Wong <[email protected]> Reported-by: kernel test robot <[email protected]> Acked-by: Hugh Dickins <[email protected]> Tracked-by: Thorsten Leemhuis <[email protected]> Fixes: 69392a403f49 ("mm/vmscan: throttle reclaim when no progress is being made") Signed-off-by: Mel Gorman <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2021-12-31Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-nextDavid S. Miller10-89/+192
Alexei Starovoitov says: ==================== pull-request: bpf-next 2021-12-30 The following pull-request contains BPF updates for your *net-next* tree. We've added 72 non-merge commits during the last 20 day(s) which contain a total of 223 files changed, 3510 insertions(+), 1591 deletions(-). The main changes are: 1) Automatic setrlimit in libbpf when bpf is memcg's in the kernel, from Andrii. 2) Beautify and de-verbose verifier logs, from Christy. 3) Composable verifier types, from Hao. 4) bpf_strncmp helper, from Hou. 5) bpf.h header dependency cleanup, from Jakub. 6) get_func_[arg|ret|arg_cnt] helpers, from Jiri. 7) Sleepable local storage, from KP. 8) Extend kfunc with PTR_TO_CTX, PTR_TO_MEM argument support, from Kumar. ==================== Signed-off-by: David S. Miller <[email protected]>
2021-12-31fbdev: fbmem: add a helper to determine if an aperture is used by a fw fbAlex Deucher1-0/+1
Add a function for drivers to check if the a firmware initialized fb is corresponds to their aperture. This allows drivers to check if the device corresponds to what the firmware set up as the display device. Bug: https://bugzilla.kernel.org/show_bug.cgi?id=215203 Bug: https://gitlab.freedesktop.org/drm/amd/-/issues/1840 Signed-off-by: Alex Deucher <[email protected]>
2021-12-31Revert "serdev: BREAK/FRAME/PARITY/OVERRUN notification prototype V2"Greg Kroah-Hartman1-22/+0
This reverts commit d8e9a406a931f687945703a4bac45042eb81ce92. It needs some future changes as pointed out by Johan and is not ready to be merged just yet. Reported-by: Johan Hovold <[email protected]> Cc: Magnus Damm <[email protected]> Link: https://lore.kernel.org/r/Yc7oZ/[email protected] Signed-off-by: Greg Kroah-Hartman <[email protected]>
2021-12-31Merge tag 'nand/for-5.17' into mtd/nextMiquel Raynal2-1/+11
Raw NAND core: * Export nand_read_page_hwecc_oob_first() GPMC memory controller for OMAP2 NAND controller: * GPMC: - Add support for AM64 SoC and allow build on K3 platforms - Use a compatible match table when checking for NAND controller - Use platform_get_irq() to get the interrupt Raw NAND controller drivers: * OMAP2 NAND controller: - Document the missing 'rb-gpios' DT property - Drop unused variable - Fix force_8bit flag behaviour for DMA mode - Move to exec_op interface - Use platform_get_irq() to get the interrupt * Renesas: - Add new NAND controller driver with its bindings and MAINTAINERS entry * Onenand: - Remove redundant variable ooblen * MPC5121: - Remove unused variable in ads5121_select_chip() * GPMI: - Add ERR007117 protection for nfc_apply_timings - Remove explicit default gpmi clock setting for i.MX6 - Use platform_get_irq_byname() to get the interrupt - Remove unneeded variable * Ingenic: - JZ4740 needs 'oob_first' read page function * Davinci: - Rewrite function description - Avoid duplicated page read - Don't calculate ECC when reading page Signed-off-by: Miquel Raynal <[email protected]>
2021-12-31Merge tag 'spi-nor/for-5.17' into mtd/nextMiquel Raynal1-2/+0
SPI NOR core changes: - Add Pratyush as SPI NOR co-maintainer. - Flash parameters initialization was done in a spaghetti way. Clean flash parameters initialization. - Rework the flash_info flags and clarify where one should be used. - Initialize all flash parameters based on JESD216 SFDP where possible. Flash parameters and settings that are SFDP discoverable should not be duplicated via flash_info flags at flash declaration. - Remove debugfs entries that duplicate sysfs entries. SPI NOR manufacturer drivers changes: - Use late_init() hook in various drivers to make it clear that those flash parameters are either not declared in the JESD216 SFDP standard, or the SFDP tables which define those flash parameters are not defined by the flash. - Fix mtd size for s3an flashes. - Write 2 bytes when disabling Octal DTR mode: 1 byte long transactions are not allowed in 8D-8D-8D mode. Signed-off-by: Miquel Raynal <[email protected]>
2021-12-31Merge tag 'memory-controller-drv-omap-5.17' into nand/nextMiquel Raynal1-1/+9
Memory controller drivers for v5.17 - OMAP GPMC 1. Add support for AM64 SoC. 2. Minor improvement: use platform_get_irq(). [[email protected]: A first commit introduced a new omap compatible and another moved the IDs to a header which created a conflict: moving the new ID as well in the header fixed it.] Signed-off-by: Miquel Raynal <[email protected]>
2021-12-31net/mlx5: DR, Ignore modify TTL if device doesn't support itYevgeny Kliteynik1-1/+1
When modifying TTL, packet's csum has to be recalculated. Due to HW issue in ConnectX-5, csum recalculation for modify TTL is supported through a work-around that is specifically enabled by configuration. If the work-around isn't enabled, ignore the modify TTL action rather than adding an unsupported action. Signed-off-by: Yevgeny Kliteynik <[email protected]>
2021-12-31net/mlx5: DR, Add support for matching on geneve_tlv_option_0_exist fieldYevgeny Kliteynik1-2/+4
Match on geneve_tlv_option_0_exist field on devices that support STEv1. Signed-off-by: Muhammad Sammar <[email protected]> Signed-off-by: Yevgeny Kliteynik <[email protected]>
2021-12-31net/mlx5: Add misc5 flow table match parametersMuhammad Sammar2-1/+25
Add support for misc5 match parameter as per HW spec, this will allow matching on tunnel_header fields. Signed-off-by: Muhammad Sammar <[email protected]> Signed-off-by: Yevgeny Kliteynik <[email protected]>
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