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2021-02-14Merge branch 'for-rc8-5.11' of ↵Linus Torvalds1-0/+1
git://git.kernel.org/pub/scm/linux/kernel/git/pavel/linux-leds Pull LED fix from Pavel Machek: "One-liner fixing a build problem" * 'for-rc8-5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/pavel/linux-leds: leds: rt8515: add V4L2_FLASH_LED_CLASS dependency
2021-02-14Merge tag 'kbuild-fixes-v5.11-3' of ↵Linus Torvalds3-2/+4
git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild Pull Kbuild fixes from Masahiro Yamada: - Fix CONFIG_TRIM_UNUSED_KSYMS build for ppc64 - Use pkg-config for scripts/sign-file.c CFLAGS * tag 'kbuild-fixes-v5.11-3' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: scripts: set proper OpenSSL include dir also for sign-file sparc: remove wrong comment from arch/sparc/include/asm/Kbuild kbuild: fix CONFIG_TRIM_UNUSED_KSYMS build for ppc64
2021-02-14Merge tag 'x86_urgent_for_v5.11' of ↵Linus Torvalds4-7/+22
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 fixes from Borislav Petkov: "I kinda knew while typing 'I hope this is the last batch of x86/urgent updates' last week, Murphy was reading too and uttered 'Hold my beer!'. So here's more fixes... Thanks Murphy. Anyway, three more x86/urgent fixes for 5.11 final. We should be finally ready (famous last words). :-) - An SGX use after free fix - A fix for the fix to disable CET instrumentation generation for kernel code. We forgot 32-bit, which we seem to do very often nowadays - A Xen PV fix to irqdomain init ordering" * tag 'x86_urgent_for_v5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/pci: Create PCI/MSI irqdomain after x86_init.pci.arch_init() x86/build: Disable CET instrumentation in the kernel for 32-bit too x86/sgx: Maintain encl->refcount for each encl->mm_list entry
2021-02-14leds: rt8515: add V4L2_FLASH_LED_CLASS dependencyArnd Bergmann1-0/+1
The leds-rt8515 driver can optionall use the v4l2 flash led class, but it causes a link error when that class is in a loadable module and the rt8515 driver itself is built-in: ld.lld: error: undefined symbol: v4l2_flash_init >>> referenced by leds-rt8515.c >>> leds/flash/leds-rt8515.o:(rt8515_probe) in archive drivers/built-in.a Adding 'depends on V4L2_FLASH_LED_CLASS' in Kconfig would avoid that, but it would make it impossible to use the driver without the v4l2 support. Add the same dependency that the other users of this class have instead, which just prevents the broken configuration. Fixes: e1c6edcbea13 ("leds: rt8515: Add Richtek RT8515 LED driver") Signed-off-by: Arnd Bergmann <[email protected]> Reviewed-by: Linus Walleij <[email protected]> Signed-off-by: Pavel Machek <[email protected]>
2021-02-15scripts: set proper OpenSSL include dir also for sign-fileRolf Eike Beer1-0/+1
Fixes: 2cea4a7a1885 ("scripts: use pkg-config to locate libcrypto") Signed-off-by: Rolf Eike Beer <[email protected]> Cc: [email protected] # 5.6.x Signed-off-by: Masahiro Yamada <[email protected]>
2021-02-15sparc: remove wrong comment from arch/sparc/include/asm/KbuildMasahiro Yamada1-2/+0
These are NOT exported to userspace. The headers listed in arch/sparc/include/uapi/asm/Kbuild are exported. Signed-off-by: Masahiro Yamada <[email protected]>
2021-02-14irqchip/imx: IMX_INTMUX should not default to y, unconditionallyGeert Uytterhoeven1-1/+2
Merely enabling CONFIG_COMPILE_TEST should not enable additional code. To fix this, restrict the automatic enabling of IMX_INTMUX to ARCH_MXC, and ask the user in case of compile-testing. Fixes: 66968d7dfc3f5451 ("irqchip: Add COMPILE_TEST support for IMX_INTMUX") Signed-off-by: Geert Uytterhoeven <[email protected]> Signed-off-by: Marc Zyngier <[email protected]> Link: https://lore.kernel.org/r/[email protected]
2021-02-13Merge branch 'skbuff-introduce-skbuff_heads-bulking-and-reusing'David S. Miller3-206/+242
Alexander Lobakin says: ==================== skbuff: introduce skbuff_heads bulking and reusing Currently, all sorts of skb allocation always do allocate skbuff_heads one by one via kmem_cache_alloc(). On the other hand, we have percpu napi_alloc_cache to store skbuff_heads queued up for freeing and flush them by bulks. We can use this cache not only for bulk-wiping, but also to obtain heads for new skbs and avoid unconditional allocations, as well as for bulk-allocating (like XDP's cpumap code and veth driver already do). As this might affect latencies, cache pressure and lots of hardware and driver-dependent stuff, this new feature is mostly optional and can be issued via: - a new napi_build_skb() function (as a replacement for build_skb()); - existing {,__}napi_alloc_skb() and napi_get_frags() functions; - __alloc_skb() with passing SKB_ALLOC_NAPI in flags. iperf3 showed 35-70 Mbps bumps for both TCP and UDP while performing VLAN NAT on 1.2 GHz MIPS board. The boost is likely to be bigger on more powerful hosts and NICs with tens of Mpps. Note on skbuff_heads from distant slabs or pfmemalloc'ed slabs: - kmalloc()/kmem_cache_alloc() itself allows by default allocating memory from the remote nodes to defragment their slabs. This is controlled by sysctl, but according to this, skbuff_head from a remote node is an OK case; - The easiest way to check if the slab of skbuff_head is remote or pfmemalloc'ed is: if (!dev_page_is_reusable(virt_to_head_page(skb))) /* drop it */; ...*but*, regarding that most slabs are built of compound pages, virt_to_head_page() will hit unlikely-branch every single call. This check costed at least 20 Mbps in test scenarios and seems like it'd be better to _not_ do this. Since v5 [4]: - revert flags-to-bool conversion and simplify flags testing in __alloc_skb() (Alexander Duyck). Since v4 [3]: - rebase on top of net-next and address kernel build robot issue; - reorder checks a bit in __alloc_skb() to make new condition even more harmless. Since v3 [2]: - make the feature mostly optional, so driver developers could decide whether to use it or not (Paolo Abeni). This reuses the old flag for __alloc_skb() and introduces a new napi_build_skb(); - reduce bulk-allocation size from 32 to 16 elements (also Paolo). This equals to the value of XDP's devmap and veth batch processing (which were tested a lot) and should be sane enough; - don't waste cycles on explicit in_serving_softirq() check. Since v2 [1]: - also cover {,__}alloc_skb() and {,__}build_skb() cases (became handy after the changes that pass tiny skbs requests to kmalloc layer); - cover the cache with KASAN instrumentation (suggested by Eric Dumazet, help of Dmitry Vyukov); - completely drop redundant __kfree_skb_flush() (also Eric); - lots of code cleanups; - expand the commit message with NUMA and pfmemalloc points (Jakub). Since v1 [0]: - use one unified cache instead of two separate to greatly simplify the logics and reduce hotpath overhead (Edward Cree); - new: recycle also GRO_MERGED_FREE skbs instead of immediate freeing; - correct performance numbers after optimizations and performing lots of tests for different use cases. [0] https://lore.kernel.org/netdev/[email protected] [1] https://lore.kernel.org/netdev/[email protected] [2] https://lore.kernel.org/netdev/[email protected] [3] https://lore.kernel.org/netdev/[email protected] [4] https://lore.kernel.org/netdev/[email protected] ==================== Reviewed-by: Alexander Duyck <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2021-02-13skbuff: queue NAPI_MERGED_FREE skbs into NAPI cache instead of freeingAlexander Lobakin3-11/+11
napi_frags_finish() and napi_skb_finish() can only be called inside NAPI Rx context, so we can feed NAPI cache with skbuff_heads that got NAPI_MERGED_FREE verdict instead of immediate freeing. Replace __kfree_skb() with __kfree_skb_defer() in napi_skb_finish() and move napi_skb_free_stolen_head() to skbuff.c, so it can drop skbs to NAPI cache. As many drivers call napi_alloc_skb()/napi_get_frags() on their receive path, this becomes especially useful. Signed-off-by: Alexander Lobakin <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2021-02-13skbuff: allow to use NAPI cache from __napi_alloc_skb()Alexander Lobakin1-2/+3
{,__}napi_alloc_skb() is mostly used either for optional non-linear receive methods (usually controlled via Ethtool private flags and off by default) and/or for Rx copybreaks. Use __napi_build_skb() here for obtaining skbuff_heads from NAPI cache instead of inplace allocations. This includes both kmalloc and page frag paths. Signed-off-by: Alexander Lobakin <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2021-02-13skbuff: allow to optionally use NAPI cache from __alloc_skb()Alexander Lobakin1-1/+5
Reuse the old and forgotten SKB_ALLOC_NAPI to add an option to get an skbuff_head from the NAPI cache instead of inplace allocation inside __alloc_skb(). This implies that the function is called from softirq or BH-off context, not for allocating a clone or from a distant node. Cc: Alexander Duyck <[email protected]> # Simplified flags check Signed-off-by: Alexander Lobakin <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2021-02-13skbuff: introduce {,__}napi_build_skb() which reuses NAPI cache headsAlexander Lobakin2-13/+83
Instead of just bulk-flushing skbuff_heads queued up through napi_consume_skb() or __kfree_skb_defer(), try to reuse them on allocation path. If the cache is empty on allocation, bulk-allocate the first 16 elements, which is more efficient than per-skb allocation. If the cache is full on freeing, bulk-wipe the second half of the cache (32 elements). This also includes custom KASAN poisoning/unpoisoning to be double sure there are no use-after-free cases. To not change current behaviour, introduce a new function, napi_build_skb(), to optionally use a new approach later in drivers. Note on selected bulk size, 16: - this equals to XDP_BULK_QUEUE_SIZE, DEV_MAP_BULK_SIZE and especially VETH_XDP_BATCH, which is also used to bulk-allocate skbuff_heads and was tested on powerful setups; - this also showed the best performance in the actual test series (from the array of {8, 16, 32}). Suggested-by: Edward Cree <[email protected]> # Divide on two halves Suggested-by: Eric Dumazet <[email protected]> # KASAN poisoning Cc: Dmitry Vyukov <[email protected]> # Help with KASAN Cc: Paolo Abeni <[email protected]> # Reduced batch size Signed-off-by: Alexander Lobakin <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2021-02-13skbuff: move NAPI cache declarations upper in the fileAlexander Lobakin1-45/+45
NAPI cache structures will be used for allocating skbuff_heads, so move their declarations a bit upper. Signed-off-by: Alexander Lobakin <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2021-02-13skbuff: remove __kfree_skb_flush()Alexander Lobakin3-19/+1
This function isn't much needed as NAPI skb queue gets bulk-freed anyway when there's no more room, and even may reduce the efficiency of bulk operations. It will be even less needed after reusing skb cache on allocation path, so remove it and this way lighten network softirqs a bit. Suggested-by: Eric Dumazet <[email protected]> Signed-off-by: Alexander Lobakin <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2021-02-13skbuff: use __build_skb_around() in __alloc_skb()Alexander Lobakin1-17/+1
Just call __build_skb_around() instead of open-coding it. Signed-off-by: Alexander Lobakin <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2021-02-13skbuff: simplify __alloc_skb() a bitAlexander Lobakin1-6/+5
Use unlikely() annotations for skbuff_head and data similarly to the two other allocation functions and remove totally redundant goto. Signed-off-by: Alexander Lobakin <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2021-02-13skbuff: make __build_skb_around() return voidAlexander Lobakin1-7/+6
__build_skb_around() can never fail and always returns passed skb. Make it return void to simplify and optimize the code. Signed-off-by: Alexander Lobakin <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2021-02-13skbuff: simplify kmalloc_reserve()Alexander Lobakin1-5/+2
Eversince the introduction of __kmalloc_reserve(), "ip" argument hasn't been used. _RET_IP_ is embedded inside kmalloc_node_track_caller(). Remove the redundant macro and rename the function after it. Signed-off-by: Alexander Lobakin <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2021-02-13skbuff: move __alloc_skb() next to the other skb allocation functionsAlexander Lobakin1-142/+142
In preparation before reusing several functions in all three skb allocation variants, move __alloc_skb() next to the __netdev_alloc_skb() and __napi_alloc_skb(). No functional changes. Signed-off-by: Alexander Lobakin <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2021-02-13Merge tag 'clk-fixes-for-linus' of ↵Linus Torvalds1-1/+1
git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux Pull clk fix from Stephen Boyd: "One small fix for the Allwinner clk driver so that display clks figure out the correct rate to use. This fixes displays running 4k@60Hz and some other resolutions that haven't been exercised and fully understood until now" * tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux: clk: sunxi-ng: mp: fix parent rate change flag check
2021-02-13Merge tag 'scsi-fixes' of ↵Linus Torvalds1-0/+1
git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi Pull SCSI fix from James Bottomley: "One fix for scsi_debug that fixes a memory leak on module removal" * tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: scsi: scsi_debug: Fix a memory leak
2021-02-13staging: hikey9xx: Fix alignment of function parametersMukul Mehar1-2/+2
This patch fixes the following checkpatch.pl check: CHECK: Alignment should match open parenthesis Signed-off-by: Mukul Mehar <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Greg Kroah-Hartman <[email protected]>
2021-02-13staging: greybus: Fixed a misspelling in hid.cPritthijit Nath1-1/+1
Fixed the spelling of 'transfered' to 'transferred'. Signed-off-by: Pritthijit Nath <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Greg Kroah-Hartman <[email protected]>
2021-02-13staging: wimax/i2400m: fix some byte order issues found by sparseAnirudh Rayabharam1-5/+10
Fix sparse byte-order warnings in the i2400m_bm_cmd_prepare() function: wimax/i2400m/fw.c:194:36: warning: restricted __le32 degrades to integer wimax/i2400m/fw.c:195:34: warning: invalid assignment: += wimax/i2400m/fw.c:195:34: left side has type unsigned int wimax/i2400m/fw.c:195:34: right side has type restricted __le32 wimax/i2400m/fw.c:196:32: warning: restricted __le32 degrades to integer wimax/i2400m/fw.c:196:47: warning: restricted __le32 degrades to integer wimax/i2400m/fw.c:196:66: warning: restricted __le32 degrades to integer Signed-off-by: Anirudh Rayabharam <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Greg Kroah-Hartman <[email protected]>
2021-02-13staging: wimax: i2400m: fix some incorrect type warningsAyush1-4/+4
Fix some "incorrect type in assignment" warnings reported by sparse in tx.c sparse warnings: wimax/i2400m/tx.c:788:35: warning: cast to restricted __le16 wimax/i2400m/tx.c:788:33: warning: incorrect type in assignment (different base types) wimax/i2400m/tx.c:788:33: expected restricted __le16 [usertype] num_pls wimax/i2400m/tx.c:788:33: got unsigned short [usertype] wimax/i2400m/tx.c:896:32: warning: cast to restricted __le32 wimax/i2400m/tx.c:896:30: warning: incorrect type in assignment (different base types) wimax/i2400m/tx.c:896:30: expected restricted __le32 [usertype] barker wimax/i2400m/tx.c:896:30: got unsigned int [usertype] wimax/i2400m/tx.c:897:34: warning: cast to restricted __le32 wimax/i2400m/tx.c:897:32: warning: incorrect type in assignment (different base types) wimax/i2400m/tx.c:897:32: expected restricted __le32 [usertype] sequence wimax/i2400m/tx.c:897:32: got unsigned int [usertype] wimax/i2400m/tx.c:899:15: warning: cast to restricted __le32 wimax/i2400m/tx.c:899:15: warning: cast from restricted __le16 Signed-off-by: Ayush <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Greg Kroah-Hartman <[email protected]>
2021-02-13staging: greybus: minor code style fixManikantan Ravichandran1-2/+2
checkpatch warning fix for string split across lines Signed-off-by: Manikantan Ravichandran <[email protected]> Link: https://lore.kernel.org/r/20210212225035.GA16260@whach Signed-off-by: Greg Kroah-Hartman <[email protected]>
2021-02-13staging:wlan-ng: use memdup_user instead of kmalloc/copy_from_userIvan Safonov1-15/+13
memdup_user() is shorter and safer equivalent of kmalloc/copy_from_user pair. Signed-off-by: Ivan Safonov <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Greg Kroah-Hartman <[email protected]>
2021-02-13staging:r8188eu: use IEEE80211_FCTL_* kernel definitionsIvan Safonov1-30/+21
_TO_DS_, _FROM_DS_, _MORE_FRAG_, _RETRY_, _PWRMGT_, _MORE_DATA_, _PRIVACY_, _ORDER_ definitions are duplicate IEEE80211_FCTL_* kernel definitions. Signed-off-by: Ivan Safonov <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Greg Kroah-Hartman <[email protected]>
2021-02-13staging: rtl8192e: remove multiple blank linesWilliam Durand1-2/+0
This patch removes some blank lines in order to fix a checkpatch issue. Signed-off-by: William Durand <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Greg Kroah-Hartman <[email protected]>
2021-02-13Merge branch 'for-5.11-fixes' of ↵Linus Torvalds4-8/+11
git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup Pull cgroup fixes from Tejun Heo: "Two cgroup fixes: - fix a NULL deref when trying to poll PSI in the root cgroup - fix confusing controller parsing corner case when mounting cgroup v1 hierarchies And doc / maintainer file updates" * 'for-5.11-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup: cgroup: update PSI file description in docs cgroup: fix psi monitor for root cgroup MAINTAINERS: Update my email address MAINTAINERS: Remove stale URLs for cpuset cgroup-v1: add disabled controller check in cgroup1_parse_param()
2021-02-13Merge branch 'akpm' (patches from Andrew)Linus Torvalds4-5/+14
Merge fixes from Andrew Morton: "6 patches. Subsystems affected by this patch series: mm/pagemap, scripts, MAINTAINERS, and h8300" * emailed patches from Andrew Morton <[email protected]>: h8300: fix PREEMPTION build, TI_PRE_COUNT undefined MAINTAINERS: add Andrey Konovalov to KASAN reviewers MAINTAINERS: update Andrey Konovalov's email address MAINTAINERS: update KASAN file list scripts/recordmcount.pl: support big endian for ARCH sh m68k: make __pfn_to_phys() and __phys_to_pfn() available for !MMU
2021-02-13Merge branch 'i2c/for-current' of ↵Linus Torvalds1-1/+10
git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux Pull i2c fix from Wolfram Sang: "One more I2C driver bugfix" * 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux: i2c: stm32f7: fix configuration of the digital filter
2021-02-13Merge tag 'for-5.11-rc7-tag' of ↵Linus Torvalds1-1/+2
git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux Pull btrfs fix from David Sterba: "A regression fix caused by a refactoring in 5.11. A corrupted superblock wouldn't be detected by checksum verification due to wrongly placed initialization of the checksum length, thus making memcmp always work" * tag 'for-5.11-rc7-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux: btrfs: initialize fs_info::csum_size earlier in open_ctree
2021-02-13h8300: fix PREEMPTION build, TI_PRE_COUNT undefinedRandy Dunlap1-0/+3
Fix a build error for undefined 'TI_PRE_COUNT' by adding it to asm-offsets.c. h8300-linux-ld: arch/h8300/kernel/entry.o: in function `resume_kernel': (.text+0x29a): undefined reference to `TI_PRE_COUNT' Link: https://lkml.kernel.org/r/[email protected] Fixes: df2078b8daa7 ("h8300: Low level entry") Signed-off-by: Randy Dunlap <[email protected]> Reported-by: kernel test robot <[email protected]> Cc: Yoshinori Sato <[email protected]> Cc: Thomas Gleixner <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2021-02-13MAINTAINERS: add Andrey Konovalov to KASAN reviewersAndrey Konovalov1-0/+1
Add my personal email address to KASAN reviewers list. Link: https://lkml.kernel.org/r/c1ce89a7aae0e2d6852249c280b1eb59aeac30c0.1613150186.git.andreyknvl@google.com Signed-off-by: Andrey Konovalov <[email protected]> Cc: Alexander Potapenko <[email protected]> Cc: Dmitry Vyukov <[email protected]> Cc: Marco Elver <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2021-02-13MAINTAINERS: update Andrey Konovalov's email addressAndrey Konovalov1-1/+1
Use my personal email address. Link: https://lkml.kernel.org/r/b0ec98dabbc12336c162788f5ccde97045a0d65e.1613150186.git.andreyknvl@google.com Signed-off-by: Andrey Konovalov <[email protected]> Cc: Alexander Potapenko <[email protected]> Cc: Dmitry Vyukov <[email protected]> Cc: Marco Elver <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2021-02-13MAINTAINERS: update KASAN file listAndrey Konovalov1-2/+3
Account for the following files: - lib/Kconfig.kasan - lib/test_kasan_module.c - arch/arm64/include/asm/mte-kasan.h Link: https://lkml.kernel.org/r/7f9771d97b34d396bfdc4e288ad93486bb865a06.1613150186.git.andreyknvl@google.com Signed-off-by: Andrey Konovalov <[email protected]> Cc: Alexander Potapenko <[email protected]> Cc: Dmitry Vyukov <[email protected]> Cc: Marco Elver <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2021-02-13scripts/recordmcount.pl: support big endian for ARCH shRong Chen1-1/+5
The kernel test robot reported the following issue: CC [M] drivers/soc/litex/litex_soc_ctrl.o sh4-linux-objcopy: Unable to change endianness of input file(s) sh4-linux-ld: cannot find drivers/soc/litex/.tmp_gl_litex_soc_ctrl.o: No such file or directory sh4-linux-objcopy: 'drivers/soc/litex/.tmp_mx_litex_soc_ctrl.o': No such file The problem is that the format of input file is elf32-shbig-linux, but sh4-linux-objcopy wants to output a file which format is elf32-sh-linux: $ sh4-linux-objdump -d drivers/soc/litex/litex_soc_ctrl.o | grep format drivers/soc/litex/litex_soc_ctrl.o: file format elf32-shbig-linux Link: https://lkml.kernel.org/r/[email protected] Link: https://lore.kernel.org/linux-mm/[email protected] Signed-off-by: Rong Chen <[email protected]> Reported-by: kernel test robot <[email protected]> Cc: Yoshinori Sato <[email protected]> Cc: Rich Felker <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2021-02-13m68k: make __pfn_to_phys() and __phys_to_pfn() available for !MMUMike Rapoport1-1/+1
Recent changes that obsoleted DISCONTIGMEM on m68k switched the MMU variant to use generic definitions of __pfn_to_phys() and __phys_to_pfn(), but missed the !MMU variant which caused a build failure: drivers/media/common/videobuf2/videobuf2-dma-contig.c: In function 'vb2_dc_get_userptr': drivers/media/common/videobuf2/videobuf2-dma-contig.c:509:5: error: implicit declaration of function '__pfn_to_phys' [-Werror=implicit-function-declaration] 509 | __pfn_to_phys(nums[0]), size, buf->dma_dir, 0); | ^~~~~~~~~~~~~ cc1: some warnings being treated as errors Enable __pfn_to_phys() and __phys_to_pfn() on !MMU builds. Link: https://lkml.kernel.org/r/[email protected] Fixes: 4bfc848e0981 ("m68k/mm: enable use of generic memory_model.h for !DISCONTIGMEM") Signed-off-by: Mike Rapoport <[email protected]> Reported-by: kernel test robot <[email protected]> Cc: Geert Uytterhoeven <[email protected]> Cc: Greg Ungerer <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2021-02-13io_uring: kill cached requests from exiting task closing the ringJens Axboe1-1/+3
Be nice and prune these upfront, in case the ring is being shared and one of the tasks is going away. This is a bit more important now that we account the allocations. Signed-off-by: Jens Axboe <[email protected]>
2021-02-13io_uring: add helper to free all request cachesJens Axboe1-7/+19
We have three different ones, put it in a helper for easy calling. This is in preparation for doing it outside of ring freeing as well. With that in mind, also ensure that we do the proper locking for safe calling from a context where the ring it still live. Signed-off-by: Jens Axboe <[email protected]>
2021-02-13io_uring: allow task match to be passed to io_req_cache_free()Jens Axboe1-6/+7
No changes in this patch, just allows a caller to pass in a targeted task that we must match for freeing requests in the cache. Signed-off-by: Jens Axboe <[email protected]>
2021-02-12Merge branch 'Xilinx-axienet-updates'David S. Miller3-18/+83
Robert Hancock says: ==================== Xilinx axienet updates Updates to the Xilinx AXI Ethernet driver to add support for an additional ethtool operation, and to support dynamic switching between 1000BaseX and SGMII interface modes. ==================== Signed-off-by: David S. Miller <[email protected]>
2021-02-12net: axienet: Support dynamic switching between 1000BaseX and SGMIIRobert Hancock2-18/+71
Newer versions of the Xilinx AXI Ethernet core (specifically version 7.2 or later) allow the core to be configured with a PHY interface mode of "Both", allowing either 1000BaseX or SGMII modes to be selected at runtime. Add support for this in the driver to allow better support for applications which can use both fiber and copper SFP modules. Signed-off-by: Robert Hancock <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2021-02-12dt-bindings: net: xilinx_axienet: add xlnx,switch-x-sgmii attributeRobert Hancock1-0/+4
Document the new xlnx,switch-x-sgmii attribute which is used to indicate that the Ethernet core supports dynamic switching between 1000BaseX and SGMII. Signed-off-by: Robert Hancock <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2021-02-12net: axienet: hook up nway_reset ethtool operationRobert Hancock1-0/+8
Hook up the nway_reset ethtool operation to the corresponding phylink function so that "ethtool -r" can be supported. Signed-off-by: Robert Hancock <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2021-02-12Merge branch 'Add support of pointer to struct in global'Alexei Starovoitov14-47/+588
Dmitrii Banshchikov says: ==================== This patchset adds support of pointers to type with known size among global function arguments. The motivation is to overcome the limit on the maximum number of allowed arguments and avoid tricky and unoptimal ways of passing arguments. A referenced type may contain pointers but access via such pointers cannot be veirified currently. v2 -> v3 - Fix reg ID generation - Fix commit description - Fix typo - Fix tests v1 -> v2: - Allow pointer to any type with known size rather than struct only - Allow pointer in global functions only - Add more tests - Fix wrapping and v1 comments ==================== Signed-off-by: Alexei Starovoitov <[email protected]>
2021-02-12selftests/bpf: Add unit tests for pointers in global functionsDmitrii Banshchikov11-0/+449
test_global_func9 - check valid pointer's scenarios test_global_func10 - check that a smaller type cannot be passed as a larger one test_global_func11 - check that CTX pointer cannot be passed test_global_func12 - check access to a null pointer test_global_func13 - check access to an arbitrary pointer value test_global_func14 - check that an opaque pointer cannot be passed test_global_func15 - check that a variable has an unknown value after it was passed to a global function by pointer test_global_func16 - check access to uninitialized stack memory test_global_func_args - check read and write operations through a pointer Signed-off-by: Dmitrii Banshchikov <[email protected]> Signed-off-by: Alexei Starovoitov <[email protected]> Acked-by: Andrii Nakryiko <[email protected]> Link: https://lore.kernel.org/bpf/[email protected]
2021-02-12bpf: Support pointers in global func argsDmitrii Banshchikov3-10/+77
Add an ability to pass a pointer to a type with known size in arguments of a global function. Such pointers may be used to overcome the limit on the maximum number of arguments, avoid expensive and tricky workarounds and to have multiple output arguments. A referenced type may contain pointers but indirect access through them isn't supported. The implementation consists of two parts. If a global function has an argument that is a pointer to a type with known size then: 1) In btf_check_func_arg_match(): check that the corresponding register points to NULL or to a valid memory region that is large enough to contain the expected argument's type. 2) In btf_prepare_func_args(): set the corresponding register type to PTR_TO_MEM_OR_NULL and its size to the size of the expected type. Only global functions are supported because allowance of pointers for static functions might break validation. Consider the following scenario. A static function has a pointer argument. A caller passes pointer to its stack memory. Because the callee can change referenced memory verifier cannot longer assume any particular slot type of the caller's stack memory hence the slot type is changed to SLOT_MISC. If there is an operation that relies on slot type other than SLOT_MISC then verifier won't be able to infer safety of the operation. When verifier sees a static function that has a pointer argument different from PTR_TO_CTX then it skips arguments check and continues with "inline" validation with more information available. The operation that relies on the particular slot type now succeeds. Because global functions were not allowed to have pointer arguments different from PTR_TO_CTX it's not possible to break existing and valid code. Signed-off-by: Dmitrii Banshchikov <[email protected]> Signed-off-by: Alexei Starovoitov <[email protected]> Acked-by: Andrii Nakryiko <[email protected]> Link: https://lore.kernel.org/bpf/[email protected]
2021-02-12bpf: Extract nullable reg type conversion into a helper functionDmitrii Banshchikov1-31/+52
Extract conversion from a register's nullable type to a type with a value. The helper will be used in mark_ptr_not_null_reg(). Signed-off-by: Dmitrii Banshchikov <[email protected]> Signed-off-by: Alexei Starovoitov <[email protected]> Acked-by: Andrii Nakryiko <[email protected]> Link: https://lore.kernel.org/bpf/[email protected]
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