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openEuler Kernel SIG双周例会
by openEuler conference 18 Dec '24

18 Dec '24

您好！ Kernel 邀请您参加 2024-12-20 14:00 召开的WeLink会议(自动录制) 会议主题：openEuler Kernel SIG双周例会会议内容： 1. 进展update 2. 议题征集中（可直接回复本邮件申请，或填报至会议纪要看板）会议链接：https://meeting.huaweicloud.com:36443/#/j/961056722 会议纪要：https://etherpad.openeuler.org/p/Kernel-meetings 更多资讯尽在：https://www.openeuler.org/zh/ Hello! Kernel invites you to attend the WeLink conference(auto recording) will be held at 2024-12-20 14:00, The subject of the conference is openEuler Kernel SIG双周例会, Summary: 1. 进展update 2. 议题征集中（可直接回复本邮件申请，或填报至会议纪要看板） You can join the meeting at https://meeting.huaweicloud.com:36443/#/j/961056722. Add topics at https://etherpad.openeuler.org/p/Kernel-meetings. More information: https://www.openeuler.org/en/

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[PATCH OLK-6.6 00/14] mm: swap: mTHP swap allocator base on swap cluster order
by Liu Shixin 18 Dec '24

18 Dec '24

Chengming Zhou (1): mm/zswap: invalidate zswap entry when swap entry free Chris Li (3): mm: swap: swap cluster switch to double link list mm: swap: mTHP allocate swap entries from nonfull list mm: swap: separate SSD allocation from scan_swap_map_slots() Jeongjun Park (1): mm: swap: prevent possible data-race in __try_to_reclaim_swap Johannes Weiner (1): mm: swapfile: fix cluster reclaim work crash on rotational devices Kairui Song (8): mm: swap: clean up initialization helper mm: swap: skip slot cache on freeing for mTHP mm: swap: allow cache reclaim to skip slot cache mm: swap: add a fragment cluster list mm: swap: relaim the cached parts that got scanned mm: swap: add a adaptive full cluster cache reclaim mm, swap: fix allocation and scanning race with swapoff mm, swap: avoid over reclaim of full clusters include/linux/swap.h | 36 +- include/linux/zswap.h | 4 +- mm/swap_slots.c | 4 + mm/swapfile.c | 871 +++++++++++++++++++++++++----------------- mm/zswap.c | 5 +- 5 files changed, 555 insertions(+), 365 deletions(-) -- 2.34.1

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[PATCH openEuler-25.03 00/10] Implementation of the uncore frequency modulation feature
by Xiangwei Li 18 Dec '24

18 Dec '24

Devfreq is a general DVFS framework for non-CPU devices in the kernel. It is generally used for bus devices. Implementation of uncore dynamic frequency modulation based on this framework. Jie Zhan (1): PM / devfreq: Add HiSilicon uncore frequency scaling driver Xiangwei Li (9): PM / devfreq: Adjust default HiSilicon uncore devfreq polling interval and workqueue PM / devfreq: event: Add devfreq_event_get_edev_by_dev function PM / devfreq: event: Supplement the name content of the event in devfreq-event PM / devfreq: Add related-package parameter in HiSilicon uncore devfreq PM / devfreq: Add associated events configuration in HiSilicon uncore frequency PM / devfreq: event: Add L3C event for HiSilicon uncore devfreq PM / devfreq: Add until governor PM / devfreq: Add bandwidth verification mechanism PM / devfreq: event: Add DDRC event for HiSilicon uncore devfreq drivers/devfreq/Kconfig | 12 + drivers/devfreq/Makefile | 2 + drivers/devfreq/devfreq-event.c | 35 +- drivers/devfreq/event/Kconfig | 7 + drivers/devfreq/event/Makefile | 2 + drivers/devfreq/event/hisi-uncore-ddrc.c | 160 ++++++ drivers/devfreq/event/hisi-uncore-l3c.c | 160 ++++++ drivers/devfreq/event/hisi-uncore.c | 252 +++++++++ drivers/devfreq/event/hisi-uncore.h | 77 +++ drivers/devfreq/governor_util.c | 127 +++++ drivers/devfreq/hisi_uncore_freq.c | 680 +++++++++++++++++++++++ include/linux/devfreq-event.h | 8 + include/linux/devfreq.h | 15 + 13 files changed, 1536 insertions(+), 1 deletion(-) create mode 100644 drivers/devfreq/event/hisi-uncore-ddrc.c create mode 100644 drivers/devfreq/event/hisi-uncore-l3c.c create mode 100644 drivers/devfreq/event/hisi-uncore.c create mode 100644 drivers/devfreq/event/hisi-uncore.h create mode 100644 drivers/devfreq/governor_util.c create mode 100644 drivers/devfreq/hisi_uncore_freq.c -- 2.25.1

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[PATCH OLK-6.6 00/19] mm: page_alloc: freelist migratetype hygiene
by Liu Shixin 18 Dec '24

18 Dec '24

Huan Yang (1): mm: page_alloc: simpify page del and expand Johannes Weiner (11): mm: page_alloc: remove pcppage migratetype caching mm: page_alloc: optimize free_unref_folios() mm: page_alloc: fix up block types when merging compatible blocks mm: page_alloc: move free pages when converting block during isolation mm: page_alloc: fix move_freepages_block() range error mm: page_alloc: fix freelist movement during block conversion mm: page_alloc: close migratetype race between freeing and stealing mm: page_isolation: prepare for hygienic freelists mm: page_alloc: consolidate free page accounting mm: page_alloc: batch vmstat updates in expand() mm: page_alloc: fix highatomic typing in multi-block buddies Kefeng Wang (1): mm: remove migration for HugePage in isolate_single_pageblock() Kemeng Shi (2): mm/page_alloc: remove unnecessary check in break_down_buddy_pages mm/page_alloc: remove unnecessary next_page in break_down_buddy_pages Vlastimil Babka (1): mm: page_alloc: change move_freepages() to __move_freepages_block() Yajun Deng (1): mm: page_alloc: simplify __free_pages_ok() Yu Zhao (1): mm/page_alloc: keep track of free highatomic Zi Yan (1): mm: page_alloc: set migratetype inside move_freepages() include/linux/mm.h | 18 +- include/linux/mmzone.h | 1 + include/linux/page-isolation.h | 5 +- include/linux/vmstat.h | 8 - mm/debug_page_alloc.c | 12 +- mm/internal.h | 9 - mm/page_alloc.c | 735 +++++++++++++++++++-------------- mm/page_isolation.c | 135 ++---- 8 files changed, 470 insertions(+), 453 deletions(-) -- 2.34.1

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[PATCH OLK-6.6 0/3] kabi OLK-6.6 reverve space
by Luo Gengkun 18 Dec '24

18 Dec '24

Luo Gengkun (3): kabi: reserve space for perf_event.h kabi: reserve space for internal.h kabi: reserve space for uprobes.h include/linux/perf_event.h | 16 ++++++++++++++++ include/linux/uprobes.h | 9 +++++++++ kernel/events/internal.h | 10 ++++++++++ 3 files changed, 35 insertions(+) -- 2.34.1

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[PATCH OLK-6.6] net/kabi: Reserve space for net structures
by Dong Chenchen 18 Dec '24

18 Dec '24

hulk inclusion category: feature bugzilla: https://gitee.com/openeuler/kernel/issues/IBC1RH -------------------------------- Reserve some fields beforehand for net subsystem related structures prone to change. Signed-off-by: Dong Chenchen <dongchenchen2(a)huawei.com> --- include/net/flow.h | 2 ++ include/net/netns/netfilter.h | 2 ++ include/net/netns/xfrm.h | 2 ++ include/net/xfrm.h | 4 ++++ 4 files changed, 10 insertions(+) diff --git a/include/net/flow.h b/include/net/flow.h index 0cc5f2ef1000..72d2ea2374ba 100644 --- a/include/net/flow.h +++ b/include/net/flow.h @@ -46,6 +46,8 @@ struct flowi_common { KABI_RESERVE(1) KABI_RESERVE(2) + KABI_RESERVE(3) + KABI_RESERVE(4) }; union flowi_uli { diff --git a/include/net/netns/netfilter.h b/include/net/netns/netfilter.h index 4b77a9b031b6..963588269637 100644 --- a/include/net/netns/netfilter.h +++ b/include/net/netns/netfilter.h @@ -34,5 +34,7 @@ struct netns_nf { KABI_RESERVE(1) KABI_RESERVE(2) + KABI_RESERVE(3) + KABI_RESERVE(4) }; #endif diff --git a/include/net/netns/xfrm.h b/include/net/netns/xfrm.h index a0c1359cc7eb..af7f20ef4823 100644 --- a/include/net/netns/xfrm.h +++ b/include/net/netns/xfrm.h @@ -87,6 +87,8 @@ struct netns_xfrm { KABI_RESERVE(1) KABI_RESERVE(2) + KABI_RESERVE(3) + KABI_RESERVE(4) }; #endif diff --git a/include/net/xfrm.h b/include/net/xfrm.h index c875faf98492..b9dec5f9c973 100644 --- a/include/net/xfrm.h +++ b/include/net/xfrm.h @@ -294,6 +294,8 @@ struct xfrm_state { KABI_RESERVE(1) KABI_RESERVE(2) + KABI_RESERVE(3) + KABI_RESERVE(4) }; static inline struct net *xs_net(struct xfrm_state *x) @@ -562,6 +564,8 @@ struct xfrm_policy { KABI_RESERVE(1) KABI_RESERVE(2) + KABI_RESERVE(3) + KABI_RESERVE(4) }; static inline struct net *xp_net(const struct xfrm_policy *xp) -- 2.25.1

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[PATCH OLK-6.6 v2] kabi: net: reserve space for xdp subsystem related structure
by Zhang Changzhong 18 Dec '24

18 Dec '24

hulk inclusion category: other bugzilla: https://gitee.com/openeuler/kernel/issues/I8OWRC ---------------------------------------------------- Reserve some fields beforehand for xdp framework related structures prone to change. Signed-off-by: Zhang Changzhong <zhangchangzhong(a)huawei.com> --- include/net/xdp.h | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) diff --git a/include/net/xdp.h b/include/net/xdp.h index c283668..9b9c7dc 100644 --- a/include/net/xdp.h +++ b/include/net/xdp.h @@ -54,6 +54,9 @@ enum xdp_mem_type { struct xdp_mem_info { u32 type; /* enum xdp_mem_type, but known size type */ u32 id; + + KABI_RESERVE(1) + KABI_RESERVE(2) }; struct page_pool; @@ -74,6 +77,9 @@ struct xdp_rxq_info { struct xdp_txq_info { struct net_device *dev; + + KABI_RESERVE(1) + KABI_RESERVE(2) }; enum xdp_buff_flags { @@ -92,6 +98,11 @@ struct xdp_buff { struct xdp_txq_info *txq; u32 frame_sz; /* frame size to deduce data_hard_end/reserved tailroom*/ u32 flags; /* supported values defined in xdp_buff_flags */ + + KABI_RESERVE(1) + KABI_RESERVE(2) + KABI_RESERVE(3) + KABI_RESERVE(4) }; static __always_inline bool xdp_buff_has_frags(struct xdp_buff *xdp) @@ -181,6 +192,11 @@ struct xdp_frame { struct net_device *dev_rx; /* used by cpumap */ u32 frame_sz; u32 flags; /* supported values defined in xdp_buff_flags */ + + KABI_RESERVE(1) + KABI_RESERVE(2) + KABI_RESERVE(3) + KABI_RESERVE(4) }; static __always_inline bool xdp_frame_has_frags(struct xdp_frame *frame) @@ -198,6 +214,9 @@ struct xdp_frame_bulk { int count; void *xa; void *q[XDP_BULK_QUEUE_SIZE]; + + KABI_RESERVE(1) + KABI_RESERVE(2) }; static __always_inline void xdp_frame_bulk_init(struct xdp_frame_bulk *bq) -- 2.9.5

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[PATCH OLK-6.6 0/3] kabi reserve space for OLK-6.6
by Luo Gengkun 18 Dec '24

18 Dec '24

*** BLURB HERE *** Luo Gengkun (3): kabi: reserve space for perf_event.h kabi: reserve space for internal.h kabi: reserve space for uprobes.h include/linux/perf_event.h | 16 ++++++++++++++++ include/linux/uprobes.h | 9 +++++++++ kernel/events/internal.h | 10 ++++++++++ 3 files changed, 35 insertions(+) -- 2.34.1

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[openeuler:OLK-5.10 2588/2588] mm/damon/core-test.h:284:9: sparse: sparse: incompatible types in comparison expression (different signedness):
by kernel test robot 18 Dec '24

18 Dec '24

tree: https://gitee.com/openeuler/kernel.git OLK-5.10 head: 6ad884d53c04817627bd02b871dd31359ce2d05c commit: 83b931be40b2829e20f38356509d8706ea6b6238 [2588/2588] mm/damon/core-test: test damon_set_regions config: x86_64-randconfig-122-20241218 (https://download.01.org/0day-ci/archive/20241218/202412181634.jaSfAZYT-lkp@…) compiler: clang version 19.1.3 (https://github.com/llvm/llvm-project ab51eccf88f5321e7c60591c5546b254b6afab99) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241218/202412181634.jaSfAZYT-lkp@…) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp(a)intel.com> | Closes: https://lore.kernel.org/oe-kbuild-all/202412181634.jaSfAZYT-lkp@intel.com/ sparse warnings: (new ones prefixed by >>) mm/damon/core.c: note: in included file (through include/linux/kernel.h, arch/x86/include/asm/percpu.h, arch/x86/include/asm/current.h, ...): /opt/cross/clang-ab51eccf88/lib/clang/19/include/stdarg.h:22:44: sparse: sparse: Expected ) in function call /opt/cross/clang-ab51eccf88/lib/clang/19/include/stdarg.h:22:44: sparse: sparse: got < /opt/cross/clang-ab51eccf88/lib/clang/19/include/stdarg.h:22:43: sparse: sparse: not a function <noident> /opt/cross/clang-ab51eccf88/lib/clang/19/include/stdarg.h:22:22: sparse: sparse: bad constant expression type mm/damon/core.c: note: in included file (through include/linux/printk.h, include/linux/kernel.h, arch/x86/include/asm/percpu.h, ...): /opt/cross/clang-ab51eccf88/lib/clang/19/include/stdarg.h:22:44: sparse: sparse: Expected ) in function call /opt/cross/clang-ab51eccf88/lib/clang/19/include/stdarg.h:22:44: sparse: sparse: got < /opt/cross/clang-ab51eccf88/lib/clang/19/include/stdarg.h:22:43: sparse: sparse: not a function <noident> /opt/cross/clang-ab51eccf88/lib/clang/19/include/stdarg.h:22:22: sparse: sparse: bad constant expression type mm/damon/core.c: note: in included file (through include/linux/string.h, include/linux/bitmap.h, include/linux/cpumask.h, ...): /opt/cross/clang-ab51eccf88/lib/clang/19/include/stdarg.h:22:44: sparse: sparse: Expected ) in function call /opt/cross/clang-ab51eccf88/lib/clang/19/include/stdarg.h:22:44: sparse: sparse: got < /opt/cross/clang-ab51eccf88/lib/clang/19/include/stdarg.h:22:43: sparse: sparse: not a function <noident> /opt/cross/clang-ab51eccf88/lib/clang/19/include/stdarg.h:22:22: sparse: sparse: bad constant expression type mm/damon/core.c: note: in included file: >> mm/damon/core-test.h:284:9: sparse: sparse: incompatible types in comparison expression (different signedness): mm/damon/core-test.h:284:9: sparse: unsigned int * mm/damon/core-test.h:284:9: sparse: int * vim +284 mm/damon/core-test.h 269 270 static void damon_test_set_regions(struct kunit *test) 271 { 272 struct damon_target *t = damon_new_target(); 273 struct damon_region *r1 = damon_new_region(4, 16); 274 struct damon_region *r2 = damon_new_region(24, 32); 275 struct damon_addr_range range = {.start = 8, .end = 28}; 276 unsigned long expects[] = {8, 16, 16, 24, 24, 28}; 277 int expect_idx = 0; 278 struct damon_region *r; 279 280 damon_add_region(r1, t); 281 damon_add_region(r2, t); 282 damon_set_regions(t, &range, 1); 283 > 284 KUNIT_EXPECT_EQ(test, damon_nr_regions(t), 3); 285 damon_for_each_region(r, t) { 286 KUNIT_EXPECT_EQ(test, r->ar.start, expects[expect_idx++]); 287 KUNIT_EXPECT_EQ(test, r->ar.end, expects[expect_idx++]); 288 } 289 damon_destroy_target(t); 290 } 291 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

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[PATCH OLK-6.6 0/5] KABI for cgroup
by Chen Ridong 18 Dec '24

18 Dec '24

KABI for cgroup Chen Ridong (3): Revert "cgroup: fix uaf when proc_cpuset_show" cgroup/cpuset: Prevent UAF in proc_cpuset_show() cgroup: add more reserve kabi Waiman Long (1): cgroup: Move rcu_head up near the top of cgroup_root Yafang Shao (1): cgroup: Make operations on the cgroup root_list RCU safe include/linux/cgroup-defs.h | 14 +++++++++--- include/linux/memcontrol.h | 8 +++++++ kernel/cgroup/cgroup-internal.h | 3 ++- kernel/cgroup/cgroup.c | 23 ++++++++++++++------ kernel/cgroup/cpuset.c | 38 ++++++--------------------------- 5 files changed, 44 insertions(+), 42 deletions(-) -- 2.34.1

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