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{"type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_014HCXHZHkkTsUpf2ts3BDzW","type":"tool_result","content":"page:\n  refs: 1\nsnapshot:\nuid=1_0 RootWebArea url=\"about:blank\"","is_error":false}]},"parent_tool_use_id":null,"session_id":"42457f95-3a49-46dd-93bd-d30a610ac4bf","uuid":"7cfc96f3-4462-403a-8e16-0cf7017c9e89","timestamp":"2026-04-04T06:12:12.955Z","tool_use_result":{"stdout":"page:\n  refs: 1\nsnapshot:\nuid=1_0 RootWebArea url=\"about:blank\"","stderr":"","interrupted":false,"isImage":false,"noOutputExpected":false}}
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{"type":"user","message":{"role":"user","content":[{"type":"tool_result","content":"Exit code 2\nerror: \"Unknown command: navigate\"\ncode: VALIDATION_ERROR\nhelp[1]:\n  Run `chrome-devtools-axi --help` to see available commands","is_error":true,"tool_use_id":"toolu_01CJA6qjzoLrQZWnw1UckN7b"}]},"parent_tool_use_id":null,"session_id":"42457f95-3a49-46dd-93bd-d30a610ac4bf","uuid":"b3c821e1-a1b8-483b-a80c-fe6676e302f3","timestamp":"2026-04-04T06:12:16.989Z","tool_use_result":"Error: Exit code 2\nerror: \"Unknown command: navigate\"\ncode: VALIDATION_ERROR\nhelp[1]:\n  Run `chrome-devtools-axi --help` to see available commands"}
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{"type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_01FGE5q1MHf84j3pLzcd88c2","type":"tool_result","content":"usage: chrome-devtools-axi [command] [args] [flags]\ncommands[35]:\n  open <url> [--query text], snapshot [--query text], screenshot <path>,\n  click @<uid> [--query text], fill @<uid> <text> [--submit], type <text>, press <key>, scroll <dir>,\n  back, wait <ms|text>, eval <js>, run, tables [keyword] [--url <url>] [--first N] [--last N],\n  hover @<uid>, drag @<from> @<to>, fillform @<uid>=<val>..., dialog <action>,\n  upload @<uid> <path>, pages, newpage <url>, selectpage <id>, closepage <id>,\n  resize <w> <h>, emulate, console, console-get <id>, network,\n  network-get [id], lighthouse, perf-start, perf-stop,\n  perf-insight <set> <name>, heap <path>, start, stop\n\nflags[2]:\n  --help, -v/-V/--version\n\ntips:\n  Prefer `open <url> --query \"text\"` to navigate and search in one step.\n  Use `snapshot --query \"text\"` to search the current page for specific content.\n  For browsing lists (issue lists, search results), use `open <url>` without --query to see all items.\n  Multi-keyword: `--query \"keyword1 keyword2\"` matches lines containing any keyword.\n  For table data: `tables \"keyword\" --url \"https://...\"` navigates and extracts in one step.\n  For search boxes: `fill @<uid> \"query\" --submit` fills and submits in one step.\n  For following links: `click @<uid> --query \"text\"` clicks and searches the resulting page in one step.","is_error":false}]},"parent_tool_use_id":null,"session_id":"42457f95-3a49-46dd-93bd-d30a610ac4bf","uuid":"56f26fc7-0c86-4d4d-ac6c-1ea04f8ec3c6","timestamp":"2026-04-04T06:12:19.448Z","tool_use_result":{"stdout":"usage: chrome-devtools-axi [command] [args] [flags]\ncommands[35]:\n  open <url> [--query text], snapshot [--query text], screenshot <path>,\n  click @<uid> [--query text], fill @<uid> <text> [--submit], type <text>, press <key>, scroll <dir>,\n  back, wait <ms|text>, eval <js>, run, tables [keyword] [--url <url>] [--first N] [--last N],\n  hover @<uid>, drag @<from> @<to>, fillform @<uid>=<val>..., dialog <action>,\n  upload @<uid> <path>, pages, newpage <url>, selectpage <id>, closepage <id>,\n  resize <w> <h>, emulate, console, console-get <id>, network,\n  network-get [id], lighthouse, perf-start, perf-stop,\n  perf-insight <set> <name>, heap <path>, start, stop\n\nflags[2]:\n  --help, -v/-V/--version\n\ntips:\n  Prefer `open <url> --query \"text\"` to navigate and search in one step.\n  Use `snapshot --query \"text\"` to search the current page for specific content.\n  For browsing lists (issue lists, search results), use `open <url>` without --query to see all items.\n  Multi-keyword: `--query \"keyword1 keyword2\"` matches lines containing any keyword.\n  For table data: `tables \"keyword\" --url \"https://...\"` navigates and extracts in one step.\n  For search boxes: `fill @<uid> \"query\" --submit` fills and submits in one step.\n  For following links: `click @<uid> --query \"text\"` clicks and searches the resulting page in one step.","stderr":"","interrupted":false,"isImage":false,"noOutputExpected":false}}
{"type":"assistant","message":{"model":"claude-sonnet-4-6","id":"msg_019em3cUhGkUrXsyJCvhgD4E","type":"message","role":"assistant","content":[{"type":"tool_use","id":"toolu_017THQvX3yu2PEQvAjptvtTo","name":"Bash","input":{"command":"chrome-devtools-axi open https://github.com/torvalds/linux --query \"star language\" 2>&1","description":"Open linux repo page and search for stars and language"},"caller":{"type":"direct"}}],"stop_reason":null,"stop_sequence":null,"stop_details":null,"usage":{"input_tokens":1,"cache_creation_input_tokens":525,"cache_read_input_tokens":16688,"cache_creation":{"ephemeral_5m_input_tokens":0,"ephemeral_1h_input_tokens":525},"output_tokens":61,"service_tier":"standard","inference_geo":"not_available"},"context_management":null},"parent_tool_use_id":null,"session_id":"42457f95-3a49-46dd-93bd-d30a610ac4bf","uuid":"5ab60fa1-4b24-4e6b-bfdd-219564cc1df2"}
{"type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_017THQvX3yu2PEQvAjptvtTo","type":"tool_result","content":"page:\n  title: \"GitHub - torvalds/linux: Linux kernel source tree · GitHub\"\n  refs: 428\nsnapshot (15 matches for \"star language\"):\nuid=2_0 RootWebArea \"GitHub - torvalds/linux: Linux kernel source tree · GitHub\" url=\"https://github.com/torvalds/linux\"\n  uid=2_1 link \"Skip to content\" url=\"https://github.com/torvalds/linux#start-of-content\"\n    uid=2_2 StaticText \"Skip to content\"\n  uid=2_3 banner\n    uid=2_4 heading \"Navigation Menu\" level=\"2\"\n    uid=2_5 link \"Homepage\" url=\"https://github.com/\"\n    uid=2_6 navigation \"Global\"\n    ...\n    uid=2_27 link \"You must be signed in to change notification settings\" description=\"You must be signed in to change notification settings\" url=\"https://github.com/login?return_to=%2Ftorvalds%2Flinux\"\n      uid=2_28 StaticText \"Notifications\"\n    uid=2_29 link \"Fork 61.4k\" url=\"https://github.com/login?return_to=%2Ftorvalds%2Flinux\"\n      uid=2_30 StaticText \"Fork \"\n      uid=2_31 StaticText \"61.4k\"\n    uid=2_32 link \"You must be signed in to star a repository\" url=\"https://github.com/login?return_to=%2Ftorvalds%2Flinux\"\n      uid=2_33 StaticText \" Star \"\n      uid=2_34 StaticText \"227k\"\n    uid=2_35 navigation \"Repository\"\n      uid=2_36 link \"Code\" url=\"https://github.com/torvalds/linux\"\n        uid=2_37 StaticText \"Code\"\n      uid=2_38 link \"Actions\" url=\"https://github.com/torvalds/linux/actions\"\n    ...\n      uid=2_150 link \"Merge tag 'locking-urgent-2026-03-29' of git://git.kernel.org/pub/scm…\" description=\"Merge tag 'locking-urgent-2026-03-29' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull futex fixes from Ingo Molnar: - Tighten up the sys_futex_requeue() ABI a bit, to disallow dissimilar futex flags and potential UaF access (Peter Zijlstra) - Fix UaF between futex_key_to_node_opt() and vma_replace_policy() (Hao-Yu Yang) - Clear stale exiting pointer in futex_lock_pi() retry path, which triggered a warning (and potential misbehavior) in stress-testing (Davidlohr Bueso) * tag 'locking-urgent-2026-03-29' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: futex: Clear stale exiting pointer in futex_lock_pi() retry path futex: Fix UaF between futex_key_to_node_opt() and vma_replace_policy() futex: Require sys_futex_requeue() to have identical flags\" url=\"https://github.com/torvalds/linux/commit/f087b0bad454a91c7d1615f82954a4752843560d\"\n        uid=2_151 StaticText \"Merge tag 'locking-urgent-2026-03-29' of git://git.kernel.org/pub/scm…\"\n      uid=2_152 StaticText \"last week\"\n      uid=2_153 link \"net, (Directory)\" url=\"https://github.com/torvalds/linux/tree/master/net\"\n        uid=2_154 StaticText \"net\"\n      uid=2_155 link \"Merge tag 'bpf-fixes' of git://git.kernel.org/pub/scm/linux/kernel/gi…\" description=\"Merge tag 'bpf-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf Pull bpf fixes from Alexei Starovoitov: - Fix register equivalence for pointers to packet (Alexei Starovoitov) - Fix incorrect pruning due to atomic fetch precision tracking (Daniel Borkmann) - Fix grace period wait for bpf_link-ed tracepoints (Kumar Kartikeya Dwivedi) - Fix use-after-free of sockmap's sk->sk_socket (Kuniyuki Iwashima) - Reject direct access to nullable PTR_TO_BUF pointers (Qi Tang) - Reject sleepable kprobe_multi programs at attach time (Varun R Mallya) * tag 'bpf-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf: selftests/bpf: Add more precision tracking tests for atomics bpf: Fix incorrect pruning due to atomic fetch precision tracking bpf: Reject sleepable kprobe_multi programs at attach time bpf: reject direct access to nullable PTR_TO_BUF pointers bpf: sockmap: Fix use-after-free of sk->sk_socket in sk_psock_verdict_data_ready(). bpf: Fix grace period wait for tracepoint bpf_link bpf: Fix regsafe() for pointers to packet\" url=\"https://github.com/torvalds/linux/commit/7b9e74c5a49e1331e03c8ae5f981067da4f33328\"\n        uid=2_156 StaticText \"Merge tag 'bpf-fixes' of git://git.kernel.org/pub/scm/linux/kernel/gi…\"\n      uid=2_157 StaticText \"yesterday\"\n      uid=2_158 link \"rust, (Directory)\" url=\"https://github.com/torvalds/linux/tree/master/rust\"\n        uid=2_159 StaticText \"rust\"\n      uid=2_160 link \"rust: regulator: do not assume that regulator_get() returns non-null\" description=\"rust: regulator: do not assume that regulator_get() returns non-null The Rust `Regulator` abstraction uses `NonNull` to wrap the underlying `struct regulator` pointer. When `CONFIG_REGULATOR` is disabled, the C stub for `regulator_get` returns `NULL`. `from_err_ptr` does not treat `NULL` as an error, so it was passed to `NonNull::new_unchecked`, causing undefined behavior. Fix this by using a raw pointer `*mut bindings::regulator` instead of `NonNull`. This allows `inner` to be `NULL` when `CONFIG_REGULATOR` is disabled, and leverages the C stubs which are designed to handle `NULL` or are no-ops. Fixes: 9b614ceada7c (\"rust: regulator: add a bare minimum regulator abstraction\") Reported-by: Miguel Ojeda <ojeda@kernel.org> Closes: https://lore.kernel.org/r/20260322193830.89324-1-ojeda@kernel.org Signed-off-by: Alice Ryhl <aliceryhl@google.com> Reviewed-by: Daniel Almeida <daniel.almeida@collabora.com> Link: https://patch.msgid.link/20260324-regulator-fix-v1-1-a5244afa3c15@google.com Signed-off-by: Mark Brown <broonie@kernel.org>\" url=\"https://github.com/torvalds/linux/commit/8121353a4bf8e38afee26299419a78ec108e14a6\"\n    ...\n      uid=2_183 link \"https://git.kernel.org/pub/scm/linux…\" url=\"https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound\"\n        uid=2_184 StaticText \"https://git.kernel.org/pub/scm/linux…\"\n      uid=2_185 StaticText \"2 days ago\"\n      uid=2_186 link \"tools, (Directory)\" url=\"https://github.com/torvalds/linux/tree/master/tools\"\n        uid=2_187 StaticText \"tools\"\n      uid=2_188 link \"Merge tag 'bpf-fixes' of git://git.kernel.org/pub/scm/linux/kernel/gi…\" description=\"Merge tag 'bpf-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf Pull bpf fixes from Alexei Starovoitov: - Fix register equivalence for pointers to packet (Alexei Starovoitov) - Fix incorrect pruning due to atomic fetch precision tracking (Daniel Borkmann) - Fix grace period wait for bpf_link-ed tracepoints (Kumar Kartikeya Dwivedi) - Fix use-after-free of sockmap's sk->sk_socket (Kuniyuki Iwashima) - Reject direct access to nullable PTR_TO_BUF pointers (Qi Tang) - Reject sleepable kprobe_multi programs at attach time (Varun R Mallya) * tag 'bpf-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf: selftests/bpf: Add more precision tracking tests for atomics bpf: Fix incorrect pruning due to atomic fetch precision tracking bpf: Reject sleepable kprobe_multi programs at attach time bpf: reject direct access to nullable PTR_TO_BUF pointers bpf: sockmap: Fix use-after-free of sk->sk_socket in sk_psock_verdict_data_ready(). bpf: Fix grace period wait for tracepoint bpf_link bpf: Fix regsafe() for pointers to packet\" url=\"https://github.com/torvalds/linux/commit/7b9e74c5a49e1331e03c8ae5f981067da4f33328\"\n        uid=2_189 StaticText \"Merge tag 'bpf-fixes' of git://git.kernel.org/pub/scm/linux/kernel/gi…\"\n      uid=2_190 StaticText \"yesterday\"\n      uid=2_191 link \"usr, (Directory)\" url=\"https://github.com/torvalds/linux/tree/master/usr\"\n        uid=2_192 StaticText \"usr\"\n      uid=2_193 link \"kbuild: uapi: drop dependency on CC_CAN_LINK\" description=\"kbuild: uapi: drop dependency on CC_CAN_LINK The header tests try to compile each header. Some UAPI headers depend on libc headers so they need a full userspace toolchain to build. This dependency is expressed in kconfig as a dependency on CC_CAN_LINK. Many kernel builds do not satisfy CC_CAN_LINK as they only use a minimal kernel (cross-) compiler. In those configurations the UAPI headers are not tested at all. However most UAPI headers do not even depend on any libc headers, and such dependencies are undesired in any case. Also the static analysis performed by headers_check.pl does not need CC_CAN_LINK. Drop the hard dependency on CC_CAN_LINK and instead skip the affected compilation step for exactly those headers which require libc. Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de> Link: https://patch.msgid.link/20251223-uapi-nostdinc-v1-5-d91545d794f7@linutronix.de Signed-off-by: Nathan Chancellor <nathan@kernel.org>\" url=\"https://github.com/torvalds/linux/commit/2a0a30805a7d27470e02137cae72f7c3188e44eb\"\n    ...\n      uid=2_208 link \"Merge tag 'devicetree-for-7.0' of git://git.kernel.org/pub/scm/linux/…\" description=\"Merge tag 'devicetree-for-7.0' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux Pull devicetree updates from Rob Herring: \"DT core: - Sync dtc/libfdt with upstream v1.7.2-62-ga26ef6400bd8 - Add a for_each_compatible_node_scoped() loop and convert users in cpufreq, dmaengine, clk, cdx, powerpc and Arm - Simplify of/platform.c with scoped loop helpers - Add fw_devlink tracking for \"mmc-pwrseq\" - Optimize fw_devlink callback code size for pinctrl-N properties - Replace strcmp_suffix() with strends() DT bindings: - Support building single binding targets - Convert google,goldfish-fb, cznic,turris-mox-rwtm, ti,prm-inst - Add bindings for Freescale AVIC, Realtek RTD1xxx system controllers, Microchip 25AA010A EEPROM, OnSemi FIN3385, IEI WT61P803 PUZZLE, Delta Electronics DPS-800-AB power supply, Infineon IR35221 Digital Multi-phase Controller, Infineon PXE1610 Digital Dual Output 6+1 VR12.5 & VR13 CPU Controller, socionext,uniphier-smpctrl, and xlnx,zynqmp-firmware - Lots of trivial binding fixes to address warnings in DTS files. These are mostly for arm64 platforms which is getting closer to be warning free. Some public shaming has helped. - Fix I2C bus node names in examples - Drop obsolete brcm,vulcan-soc binding - Drop unreferenced binding headers\" * tag 'devicetree-for-7.0' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux: (60 commits) dt-bindings: interrupt-controller: Add compatiblie string fsl,imx(1|25|27|31|35)-avic dt-bindings: soc: imx: add fsl,aips and fsl,emi compatible strings dt-bindings: display: bridge: lt8912b: Drop reset gpio requirement dt-bindings: firmware: fsl,scu: Mark multi-channel MU layouts as deprecated cpufreq: s5pv210: Simplify with scoped for each OF child loop dmaengine: fsl_raid: Simplify with scoped for each OF child loop clk: imx: imx31: Simplify with scoped for each OF child loop clk: imx: imx27: Simplify with scoped for each OF child loop cdx: Use mutex guard to simplify error handling cdx: Simplify with scoped for each OF child loop powerpc/wii: Simplify with scoped for each OF child loop powerpc/fsp2: Simplify with scoped for each OF child loop ARM: exynos: Simplify with scoped for each OF child loop ARM: at91: Simplify with scoped for each OF child loop of: Add for_each_compatible_node_scoped() helper dt-bindings: Fix emails with spaces or missing brackets scripts/dtc: Update to upstream version v1.7.2-62-ga26ef6400bd8 dt-bindings: crypto: inside-secure,safexcel: Mandate only ring IRQs dt-bindings: crypto: inside-secure,safexcel: Add SoC compatibles of: reserved_mem: Fix placement of __free() annotation ...\" url=\"https://github.com/torvalds/linux/commit/098b6e44cbaa2d526d06af90c862d13fb414a0ec\"\n        uid=2_209 StaticText \"Merge tag 'devicetree-for-7.0' of git://git.kernel.org/pub/scm/linux/…\"\n      uid=2_210 StaticText \"2 months ago\"\n      uid=2_211 link \".clippy.toml, (File)\" url=\"https://github.com/torvalds/linux/blob/master/.clippy.toml\"\n        uid=2_212 StaticText \".clippy.toml\"\n      uid=2_213 link \"rust: clean Rust 1.88.0's warning about clippy::disallowed_macros c…\" description=\"rust: clean Rust 1.88.0's warning about `clippy::disallowed_macros` configuration Starting with Rust 1.88.0 (expected 2025-06-26) [1], Clippy may start warning about paths that do not resolve in the `disallowed_macros` configuration: warning: `kernel::dbg` does not refer to an existing macro --> .clippy.toml:10:5 | 10 | { path = \"kernel::dbg\", reason = \"the `dbg!` macro is intended as a debugging tool\" }, | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ This is a lint we requested at [2], due to the trouble debugging the lint due to false negatives (e.g. [3]), which we use to emulate `clippy::dbg_macro` [4]. See commit 8577c9dca799 (\"rust: replace `clippy::dbg_macro` with `disallowed_macros`\") for more details. Given the false negatives are not resolved yet, it is expected that Clippy complains about not finding this macro. Thus, until the false negatives are fixed (and, even then, probably we will need to wait for the MSRV to raise enough), use the escape hatch to allow an invalid path. Cc: stable@vger.kernel.org # Needed in 6.12.y and later (Rust is pinned in older LTSs). Link: https://github.com/rust-lang/rust-clippy/pull/14397 [1] Link: https://github.com/rust-lang/rust-clippy/issues/11432 [2] Link: https://github.com/rust-lang/rust-clippy/issues/11431 [3] Link: https://github.com/rust-lang/rust-clippy/issues/11303 [4] Reviewed-by: Alice Ryhl <aliceryhl@google.com> Link: https://lore.kernel.org/r/20250502140237.1659624-5-ojeda@kernel.org Signed-off-by: Miguel Ojeda <ojeda@kernel.org>\" url=\"https://github.com/torvalds/linux/commit/c016722fd57551f8a6fcf472c9d2bcf2130ea0ec\"\n        uid=2_214 StaticText \"rust: clean Rust 1.88.0's warning about \"\n        uid=2_215 StaticText \"clippy::disallowed_macros\"\n        uid=2_216 StaticText \" c…\"\n      uid=2_217 StaticText \"11 months ago\"\n      uid=2_218 link \".cocciconfig, (File)\" url=\"https://github.com/torvalds/linux/blob/master/.cocciconfig\"\n    ...\n      uid=2_266 link \"MAINTAINERS: remove Thomas Falcon from IBM ibmvnic\" description=\"MAINTAINERS: remove Thomas Falcon from IBM ibmvnic We have not seen emails or tags from Thomas's IBM address (tlfalcon@linux.ibm.com) in over 5 years. Looks like Thomas is active in perf tooling at Intel (thomas.falcon@intel.com). Subsystem IBM Power SRIOV Virtual NIC Device Driver Changes 49 / 134 (36%) Last activity: 2025-08-26 Haren Myneni <haren@linux.ibm.com>: Tags 3c14917953a5 2025-08-26 00:00:00 2 Rick Lindsley <ricklind@linux.ibm.com>: Nick Child <nnac123@linux.ibm.com>: Author d93a6caab5d7 2025-03-25 00:00:00 14 Tags d93a6caab5d7 2025-03-25 00:00:00 16 Thomas Falcon <tlfalcon@linux.ibm.com>: Top reviewers: [22]: drt@linux.ibm.com [13]: horms@kernel.org [9]: ricklind@linux.vnet.ibm.com [3]: davemarq@linux.ibm.com INACTIVE MAINTAINER Thomas Falcon <tlfalcon@linux.ibm.com> Move Thomas to CREDITS as the initial author of ibmvnic. Acked-by: Thomas Falcon <thomas.falcon@intel.com> Link: https://patch.msgid.link/20260303215339.2333548-12-kuba@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>\" url=\"https://github.com/torvalds/linux/commit/ed6579002548f3d9c00380e2aeaa8305d3ed8fc5\"\n        uid=2_267 StaticText \"MAINTAINERS: remove Thomas Falcon from IBM ibmvnic\"\n      uid=2_268 StaticText \"last month\"\n      uid=2_269 link \"Kbuild, (File)\" url=\"https://github.com/torvalds/linux/blob/master/Kbuild\"\n        uid=2_270 StaticText \"Kbuild\"\n      uid=2_271 link \"sched: Make migrate_{en,dis}able() inline\" description=\"sched: Make migrate_{en,dis}able() inline For now, migrate_enable and migrate_disable are global, which makes them become hotspots in some case. Take BPF for example, the function calling to migrate_enable and migrate_disable in BPF trampoline can introduce significant overhead, and following is the 'perf top' of FENTRY's benchmark (./tools/testing/selftests/bpf/bench trig-fentry): 54.63% bpf_prog_2dcccf652aac1793_bench_trigger_fentry [k] bpf_prog_2dcccf652aac1793_bench_trigger_fentry 10.43% [kernel] [k] migrate_enable 10.07% bpf_trampoline_6442517037 [k] bpf_trampoline_6442517037 8.06% [kernel] [k] __bpf_prog_exit_recur 4.11% libc.so.6 [.] syscall 2.15% [kernel] [k] entry_SYSCALL_64 1.48% [kernel] [k] memchr_inv 1.32% [kernel] [k] fput 1.16% [kernel] [k] _copy_to_user 0.73% [kernel] [k] bpf_prog_test_run_raw_tp So in this commit, we make migrate_enable/migrate_disable inline to obtain better performance. The struct rq is defined internally in kernel/sched/sched.h, and the field \"nr_pinned\" is accessed in migrate_enable/migrate_disable, which makes it hard to make them inline. Alexei Starovoitov suggests to generate the offset of \"nr_pinned\" in [1], so we can define the migrate_enable/migrate_disable in include/linux/sched.h and access \"this_rq()->nr_pinned\" with \"(void *)this_rq() + RQ_nr_pinned\". The offset of \"nr_pinned\" is generated in include/generated/rq-offsets.h by kernel/sched/rq-offsets.c. Generally speaking, we move the definition of migrate_enable and migrate_disable to include/linux/sched.h from kernel/sched/core.c. The calling to __set_cpus_allowed_ptr() is leaved in ___migrate_enable(). The \"struct rq\" is not available in include/linux/sched.h, so we can't access the \"runqueues\" with this_cpu_ptr(), as the compilation will fail in this_cpu_ptr() -> raw_cpu_ptr() -> __verify_pcpu_ptr(): typeof((ptr) + 0) So we introduce the this_rq_raw() and access the runqueues with arch_raw_cpu_ptr/PERCPU_PTR directly. The variable \"runqueues\" is not visible in the kernel modules, and export it is not a good idea. As Peter Zijlstra advised in [2], we define and export migrate_enable/migrate_disable in kernel/sched/core.c too, and use them for the modules. Before this patch, the performance of BPF FENTRY is: fentry : 113.030 ± 0.149M/s fentry : 112.501 ± 0.187M/s fentry : 112.828 ± 0.267M/s fentry : 115.287 ± 0.241M/s After this patch, the performance of BPF FENTRY increases to: fentry : 143.644 ± 0.670M/s fentry : 149.764 ± 0.362M/s fentry : 149.642 ± 0.156M/s fentry : 145.263 ± 0.221M/s Signed-off-by: Menglong Dong <dongml2@chinatelecom.cn> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lore.kernel.org/bpf/CAADnVQ+5sEDKHdsJY5ZsfGDO_1SEhhQWHrt2SMBG5SYyQ+jt7w@mail.gmail.com/ [1] Link: https://lore.kernel.org/all/20250819123214.GH4067720@noisy.programming.kicks-ass.net/ [2]\" url=\"https://github.com/torvalds/linux/commit/378b7708194fff77c9020392067329931c3fcc04\"\n        uid=2_272 StaticText \"sched: Make migrate_{en,dis}able() inline\"\n      uid=2_273 StaticText \"7 months ago\"\n      uid=2_274 link \"Kconfig, (File)\" url=\"https://github.com/torvalds/linux/blob/master/Kconfig\"\n        uid=2_275 StaticText \"Kconfig\"\n      uid=2_276 link \"io_uring: Rename KConfig to Kconfig\" description=\"io_uring: Rename KConfig to Kconfig Kconfig files are traditionally named \"Kconfig\". Fixes: 6f377873cb239050 (\"io_uring/zcrx: add interface queue and refill queue\") Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://lore.kernel.org/r/5ae387c1465f54768b51a5a1ca87be7934c4b2ad.1739976387.git.geert+renesas@glider.be Signed-off-by: Jens Axboe <axboe@kernel.dk>\" url=\"https://github.com/torvalds/linux/commit/0d2cdc35e805eb50f4a33b7287995ef590f1b916\"\n    ...\n============\n\nThe Linux kernel is the core of any Linux operating system. It manages hardware,\nsystem resources, and provides the fundamental services for all other software.\n\nQuick Start\n-----------\n\n* Report a bug: See Documentation/admin-guide/reporting-issues.rst\n* Get the latest kernel: \"\n      uid=2_301 link \"https://kernel.org\" url=\"https://kernel.org/\"\n    ...\nWho Are You?\n============\n\nFind your role below:\n\n* New Kernel Developer - Getting started with kernel development\n* Academic Researcher - Studying kernel internals and architecture\n* Security Expert - Hardening and vulnerability analysis\n* Backport/Maintenance Engineer - Maintaining stable kernels\n* System Administrator - Configuring and troubleshooting\n* Maintainer - Leading subsystems and reviewing patches\n    ...\n==================\n\nNew Kernel Developer\n--------------------\n\nWelcome! Start your kernel development journey here:\n\n* Getting Started: Documentation/process/development-process.rst\n* Your First Patch: Documentation/process/submitting-patches.rst\n* Coding Style: Documentation/process/coding-style.rst\n* Build System: Documentation/kbuild/index.rst\n* Development Tools: Documentation/dev-tools/index.rst\n* Kernel Hacking Guide: Documentation/kernel-hacking/hacking.rst\n    ...\n      uid=2_321 heading \"License\" level=\"3\"\n      uid=2_322 link \" View license\" url=\"https://github.com/torvalds/linux#License-1-ov-file\"\n        uid=2_323 StaticText \" View license\"\n      uid=2_324 link \"Activity\" url=\"https://github.com/torvalds/linux/activity\"\n        uid=2_325 StaticText \"Activity\"\n      uid=2_326 heading \"Stars\" level=\"3\"\n      uid=2_327 link \"227k stars\" url=\"https://github.com/torvalds/linux/stargazers\"\n        uid=2_328 StaticText \"227k\"\n        uid=2_329 StaticText \" stars\"\n      uid=2_330 heading \"Watchers\" level=\"3\"\n      uid=2_331 link \"8.1k watching\" url=\"https://github.com/torvalds/linux/watchers\"\n        uid=2_332 StaticText \"8.1k\"\n        uid=2_333 StaticText \" watching\"\n      uid=2_334 heading \"Forks\" level=\"3\"\n    ...\n        uid=2_378 image \"@kuba-moo\" url=\"https://avatars.githubusercontent.com/u/6732289?s=64&v=4\"\n      uid=2_379 link \"@vsyrjala\" keyshortcuts=\"Alt+ArrowUp\" url=\"https://github.com/vsyrjala\"\n        uid=2_380 image \"@vsyrjala\" url=\"https://avatars.githubusercontent.com/u/1081303?s=64&v=4\"\n      uid=2_381 link \"+ 17,956 contributors\" url=\"https://github.com/torvalds/linux/graphs/contributors\"\n        uid=2_382 StaticText \"+ 17,956 contributors\"\n      uid=2_383 heading \"Languages\" level=\"2\"\n      uid=2_384 link \"C 98.0%\" url=\"https://github.com/torvalds/linux/search?l=c\"\n        uid=2_385 StaticText \"C\"\n        uid=2_386 StaticText \"98.0%\"\n      uid=2_387 link \"Assembly 0.7%\" url=\"https://github.com/torvalds/linux/search?l=assembly\"\n        uid=2_388 StaticText \"Assembly\"","is_error":false}]},"parent_tool_use_id":null,"session_id":"42457f95-3a49-46dd-93bd-d30a610ac4bf","uuid":"030357ee-bb6d-443e-b2da-ce58a1be9afd","timestamp":"2026-04-04T06:12:23.712Z","tool_use_result":{"stdout":"page:\n  title: \"GitHub - torvalds/linux: Linux kernel source tree · GitHub\"\n  refs: 428\nsnapshot (15 matches for \"star language\"):\nuid=2_0 RootWebArea \"GitHub - torvalds/linux: Linux kernel source tree · GitHub\" url=\"https://github.com/torvalds/linux\"\n  uid=2_1 link \"Skip to content\" url=\"https://github.com/torvalds/linux#start-of-content\"\n    uid=2_2 StaticText \"Skip to content\"\n  uid=2_3 banner\n    uid=2_4 heading \"Navigation Menu\" level=\"2\"\n    uid=2_5 link \"Homepage\" url=\"https://github.com/\"\n    uid=2_6 navigation \"Global\"\n    ...\n    uid=2_27 link \"You must be signed in to change notification settings\" description=\"You must be signed in to change notification settings\" url=\"https://github.com/login?return_to=%2Ftorvalds%2Flinux\"\n      uid=2_28 StaticText \"Notifications\"\n    uid=2_29 link \"Fork 61.4k\" url=\"https://github.com/login?return_to=%2Ftorvalds%2Flinux\"\n      uid=2_30 StaticText \"Fork \"\n      uid=2_31 StaticText \"61.4k\"\n    uid=2_32 link \"You must be signed in to star a repository\" url=\"https://github.com/login?return_to=%2Ftorvalds%2Flinux\"\n      uid=2_33 StaticText \" Star \"\n      uid=2_34 StaticText \"227k\"\n    uid=2_35 navigation \"Repository\"\n      uid=2_36 link \"Code\" url=\"https://github.com/torvalds/linux\"\n        uid=2_37 StaticText \"Code\"\n      uid=2_38 link \"Actions\" url=\"https://github.com/torvalds/linux/actions\"\n    ...\n      uid=2_150 link \"Merge tag 'locking-urgent-2026-03-29' of git://git.kernel.org/pub/scm…\" description=\"Merge tag 'locking-urgent-2026-03-29' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull futex fixes from Ingo Molnar: - Tighten up the sys_futex_requeue() ABI a bit, to disallow dissimilar futex flags and potential UaF access (Peter Zijlstra) - Fix UaF between futex_key_to_node_opt() and vma_replace_policy() (Hao-Yu Yang) - Clear stale exiting pointer in futex_lock_pi() retry path, which triggered a warning (and potential misbehavior) in stress-testing (Davidlohr Bueso) * tag 'locking-urgent-2026-03-29' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: futex: Clear stale exiting pointer in futex_lock_pi() retry path futex: Fix UaF between futex_key_to_node_opt() and vma_replace_policy() futex: Require sys_futex_requeue() to have identical flags\" url=\"https://github.com/torvalds/linux/commit/f087b0bad454a91c7d1615f82954a4752843560d\"\n        uid=2_151 StaticText \"Merge tag 'locking-urgent-2026-03-29' of git://git.kernel.org/pub/scm…\"\n      uid=2_152 StaticText \"last week\"\n      uid=2_153 link \"net, (Directory)\" url=\"https://github.com/torvalds/linux/tree/master/net\"\n        uid=2_154 StaticText \"net\"\n      uid=2_155 link \"Merge tag 'bpf-fixes' of git://git.kernel.org/pub/scm/linux/kernel/gi…\" description=\"Merge tag 'bpf-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf Pull bpf fixes from Alexei Starovoitov: - Fix register equivalence for pointers to packet (Alexei Starovoitov) - Fix incorrect pruning due to atomic fetch precision tracking (Daniel Borkmann) - Fix grace period wait for bpf_link-ed tracepoints (Kumar Kartikeya Dwivedi) - Fix use-after-free of sockmap's sk->sk_socket (Kuniyuki Iwashima) - Reject direct access to nullable PTR_TO_BUF pointers (Qi Tang) - Reject sleepable kprobe_multi programs at attach time (Varun R Mallya) * tag 'bpf-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf: selftests/bpf: Add more precision tracking tests for atomics bpf: Fix incorrect pruning due to atomic fetch precision tracking bpf: Reject sleepable kprobe_multi programs at attach time bpf: reject direct access to nullable PTR_TO_BUF pointers bpf: sockmap: Fix use-after-free of sk->sk_socket in sk_psock_verdict_data_ready(). bpf: Fix grace period wait for tracepoint bpf_link bpf: Fix regsafe() for pointers to packet\" url=\"https://github.com/torvalds/linux/commit/7b9e74c5a49e1331e03c8ae5f981067da4f33328\"\n        uid=2_156 StaticText \"Merge tag 'bpf-fixes' of git://git.kernel.org/pub/scm/linux/kernel/gi…\"\n      uid=2_157 StaticText \"yesterday\"\n      uid=2_158 link \"rust, (Directory)\" url=\"https://github.com/torvalds/linux/tree/master/rust\"\n        uid=2_159 StaticText \"rust\"\n      uid=2_160 link \"rust: regulator: do not assume that regulator_get() returns non-null\" description=\"rust: regulator: do not assume that regulator_get() returns non-null The Rust `Regulator` abstraction uses `NonNull` to wrap the underlying `struct regulator` pointer. When `CONFIG_REGULATOR` is disabled, the C stub for `regulator_get` returns `NULL`. `from_err_ptr` does not treat `NULL` as an error, so it was passed to `NonNull::new_unchecked`, causing undefined behavior. Fix this by using a raw pointer `*mut bindings::regulator` instead of `NonNull`. This allows `inner` to be `NULL` when `CONFIG_REGULATOR` is disabled, and leverages the C stubs which are designed to handle `NULL` or are no-ops. Fixes: 9b614ceada7c (\"rust: regulator: add a bare minimum regulator abstraction\") Reported-by: Miguel Ojeda <ojeda@kernel.org> Closes: https://lore.kernel.org/r/20260322193830.89324-1-ojeda@kernel.org Signed-off-by: Alice Ryhl <aliceryhl@google.com> Reviewed-by: Daniel Almeida <daniel.almeida@collabora.com> Link: https://patch.msgid.link/20260324-regulator-fix-v1-1-a5244afa3c15@google.com Signed-off-by: Mark Brown <broonie@kernel.org>\" url=\"https://github.com/torvalds/linux/commit/8121353a4bf8e38afee26299419a78ec108e14a6\"\n    ...\n      uid=2_183 link \"https://git.kernel.org/pub/scm/linux…\" url=\"https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound\"\n        uid=2_184 StaticText \"https://git.kernel.org/pub/scm/linux…\"\n      uid=2_185 StaticText \"2 days ago\"\n      uid=2_186 link \"tools, (Directory)\" url=\"https://github.com/torvalds/linux/tree/master/tools\"\n        uid=2_187 StaticText \"tools\"\n      uid=2_188 link \"Merge tag 'bpf-fixes' of git://git.kernel.org/pub/scm/linux/kernel/gi…\" description=\"Merge tag 'bpf-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf Pull bpf fixes from Alexei Starovoitov: - Fix register equivalence for pointers to packet (Alexei Starovoitov) - Fix incorrect pruning due to atomic fetch precision tracking (Daniel Borkmann) - Fix grace period wait for bpf_link-ed tracepoints (Kumar Kartikeya Dwivedi) - Fix use-after-free of sockmap's sk->sk_socket (Kuniyuki Iwashima) - Reject direct access to nullable PTR_TO_BUF pointers (Qi Tang) - Reject sleepable kprobe_multi programs at attach time (Varun R Mallya) * tag 'bpf-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf: selftests/bpf: Add more precision tracking tests for atomics bpf: Fix incorrect pruning due to atomic fetch precision tracking bpf: Reject sleepable kprobe_multi programs at attach time bpf: reject direct access to nullable PTR_TO_BUF pointers bpf: sockmap: Fix use-after-free of sk->sk_socket in sk_psock_verdict_data_ready(). bpf: Fix grace period wait for tracepoint bpf_link bpf: Fix regsafe() for pointers to packet\" url=\"https://github.com/torvalds/linux/commit/7b9e74c5a49e1331e03c8ae5f981067da4f33328\"\n        uid=2_189 StaticText \"Merge tag 'bpf-fixes' of git://git.kernel.org/pub/scm/linux/kernel/gi…\"\n      uid=2_190 StaticText \"yesterday\"\n      uid=2_191 link \"usr, (Directory)\" url=\"https://github.com/torvalds/linux/tree/master/usr\"\n        uid=2_192 StaticText \"usr\"\n      uid=2_193 link \"kbuild: uapi: drop dependency on CC_CAN_LINK\" description=\"kbuild: uapi: drop dependency on CC_CAN_LINK The header tests try to compile each header. Some UAPI headers depend on libc headers so they need a full userspace toolchain to build. This dependency is expressed in kconfig as a dependency on CC_CAN_LINK. Many kernel builds do not satisfy CC_CAN_LINK as they only use a minimal kernel (cross-) compiler. In those configurations the UAPI headers are not tested at all. However most UAPI headers do not even depend on any libc headers, and such dependencies are undesired in any case. Also the static analysis performed by headers_check.pl does not need CC_CAN_LINK. Drop the hard dependency on CC_CAN_LINK and instead skip the affected compilation step for exactly those headers which require libc. Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de> Link: https://patch.msgid.link/20251223-uapi-nostdinc-v1-5-d91545d794f7@linutronix.de Signed-off-by: Nathan Chancellor <nathan@kernel.org>\" url=\"https://github.com/torvalds/linux/commit/2a0a30805a7d27470e02137cae72f7c3188e44eb\"\n    ...\n      uid=2_208 link \"Merge tag 'devicetree-for-7.0' of git://git.kernel.org/pub/scm/linux/…\" description=\"Merge tag 'devicetree-for-7.0' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux Pull devicetree updates from Rob Herring: \"DT core: - Sync dtc/libfdt with upstream v1.7.2-62-ga26ef6400bd8 - Add a for_each_compatible_node_scoped() loop and convert users in cpufreq, dmaengine, clk, cdx, powerpc and Arm - Simplify of/platform.c with scoped loop helpers - Add fw_devlink tracking for \"mmc-pwrseq\" - Optimize fw_devlink callback code size for pinctrl-N properties - Replace strcmp_suffix() with strends() DT bindings: - Support building single binding targets - Convert google,goldfish-fb, cznic,turris-mox-rwtm, ti,prm-inst - Add bindings for Freescale AVIC, Realtek RTD1xxx system controllers, Microchip 25AA010A EEPROM, OnSemi FIN3385, IEI WT61P803 PUZZLE, Delta Electronics DPS-800-AB power supply, Infineon IR35221 Digital Multi-phase Controller, Infineon PXE1610 Digital Dual Output 6+1 VR12.5 & VR13 CPU Controller, socionext,uniphier-smpctrl, and xlnx,zynqmp-firmware - Lots of trivial binding fixes to address warnings in DTS files. These are mostly for arm64 platforms which is getting closer to be warning free. Some public shaming has helped. - Fix I2C bus node names in examples - Drop obsolete brcm,vulcan-soc binding - Drop unreferenced binding headers\" * tag 'devicetree-for-7.0' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux: (60 commits) dt-bindings: interrupt-controller: Add compatiblie string fsl,imx(1|25|27|31|35)-avic dt-bindings: soc: imx: add fsl,aips and fsl,emi compatible strings dt-bindings: display: bridge: lt8912b: Drop reset gpio requirement dt-bindings: firmware: fsl,scu: Mark multi-channel MU layouts as deprecated cpufreq: s5pv210: Simplify with scoped for each OF child loop dmaengine: fsl_raid: Simplify with scoped for each OF child loop clk: imx: imx31: Simplify with scoped for each OF child loop clk: imx: imx27: Simplify with scoped for each OF child loop cdx: Use mutex guard to simplify error handling cdx: Simplify with scoped for each OF child loop powerpc/wii: Simplify with scoped for each OF child loop powerpc/fsp2: Simplify with scoped for each OF child loop ARM: exynos: Simplify with scoped for each OF child loop ARM: at91: Simplify with scoped for each OF child loop of: Add for_each_compatible_node_scoped() helper dt-bindings: Fix emails with spaces or missing brackets scripts/dtc: Update to upstream version v1.7.2-62-ga26ef6400bd8 dt-bindings: crypto: inside-secure,safexcel: Mandate only ring IRQs dt-bindings: crypto: inside-secure,safexcel: Add SoC compatibles of: reserved_mem: Fix placement of __free() annotation ...\" url=\"https://github.com/torvalds/linux/commit/098b6e44cbaa2d526d06af90c862d13fb414a0ec\"\n        uid=2_209 StaticText \"Merge tag 'devicetree-for-7.0' of git://git.kernel.org/pub/scm/linux/…\"\n      uid=2_210 StaticText \"2 months ago\"\n      uid=2_211 link \".clippy.toml, (File)\" url=\"https://github.com/torvalds/linux/blob/master/.clippy.toml\"\n        uid=2_212 StaticText \".clippy.toml\"\n      uid=2_213 link \"rust: clean Rust 1.88.0's warning about clippy::disallowed_macros c…\" description=\"rust: clean Rust 1.88.0's warning about `clippy::disallowed_macros` configuration Starting with Rust 1.88.0 (expected 2025-06-26) [1], Clippy may start warning about paths that do not resolve in the `disallowed_macros` configuration: warning: `kernel::dbg` does not refer to an existing macro --> .clippy.toml:10:5 | 10 | { path = \"kernel::dbg\", reason = \"the `dbg!` macro is intended as a debugging tool\" }, | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ This is a lint we requested at [2], due to the trouble debugging the lint due to false negatives (e.g. [3]), which we use to emulate `clippy::dbg_macro` [4]. See commit 8577c9dca799 (\"rust: replace `clippy::dbg_macro` with `disallowed_macros`\") for more details. Given the false negatives are not resolved yet, it is expected that Clippy complains about not finding this macro. Thus, until the false negatives are fixed (and, even then, probably we will need to wait for the MSRV to raise enough), use the escape hatch to allow an invalid path. Cc: stable@vger.kernel.org # Needed in 6.12.y and later (Rust is pinned in older LTSs). Link: https://github.com/rust-lang/rust-clippy/pull/14397 [1] Link: https://github.com/rust-lang/rust-clippy/issues/11432 [2] Link: https://github.com/rust-lang/rust-clippy/issues/11431 [3] Link: https://github.com/rust-lang/rust-clippy/issues/11303 [4] Reviewed-by: Alice Ryhl <aliceryhl@google.com> Link: https://lore.kernel.org/r/20250502140237.1659624-5-ojeda@kernel.org Signed-off-by: Miguel Ojeda <ojeda@kernel.org>\" url=\"https://github.com/torvalds/linux/commit/c016722fd57551f8a6fcf472c9d2bcf2130ea0ec\"\n        uid=2_214 StaticText \"rust: clean Rust 1.88.0's warning about \"\n        uid=2_215 StaticText \"clippy::disallowed_macros\"\n        uid=2_216 StaticText \" c…\"\n      uid=2_217 StaticText \"11 months ago\"\n      uid=2_218 link \".cocciconfig, (File)\" url=\"https://github.com/torvalds/linux/blob/master/.cocciconfig\"\n    ...\n      uid=2_266 link \"MAINTAINERS: remove Thomas Falcon from IBM ibmvnic\" description=\"MAINTAINERS: remove Thomas Falcon from IBM ibmvnic We have not seen emails or tags from Thomas's IBM address (tlfalcon@linux.ibm.com) in over 5 years. Looks like Thomas is active in perf tooling at Intel (thomas.falcon@intel.com). Subsystem IBM Power SRIOV Virtual NIC Device Driver Changes 49 / 134 (36%) Last activity: 2025-08-26 Haren Myneni <haren@linux.ibm.com>: Tags 3c14917953a5 2025-08-26 00:00:00 2 Rick Lindsley <ricklind@linux.ibm.com>: Nick Child <nnac123@linux.ibm.com>: Author d93a6caab5d7 2025-03-25 00:00:00 14 Tags d93a6caab5d7 2025-03-25 00:00:00 16 Thomas Falcon <tlfalcon@linux.ibm.com>: Top reviewers: [22]: drt@linux.ibm.com [13]: horms@kernel.org [9]: ricklind@linux.vnet.ibm.com [3]: davemarq@linux.ibm.com INACTIVE MAINTAINER Thomas Falcon <tlfalcon@linux.ibm.com> Move Thomas to CREDITS as the initial author of ibmvnic. Acked-by: Thomas Falcon <thomas.falcon@intel.com> Link: https://patch.msgid.link/20260303215339.2333548-12-kuba@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>\" url=\"https://github.com/torvalds/linux/commit/ed6579002548f3d9c00380e2aeaa8305d3ed8fc5\"\n        uid=2_267 StaticText \"MAINTAINERS: remove Thomas Falcon from IBM ibmvnic\"\n      uid=2_268 StaticText \"last month\"\n      uid=2_269 link \"Kbuild, (File)\" url=\"https://github.com/torvalds/linux/blob/master/Kbuild\"\n        uid=2_270 StaticText \"Kbuild\"\n      uid=2_271 link \"sched: Make migrate_{en,dis}able() inline\" description=\"sched: Make migrate_{en,dis}able() inline For now, migrate_enable and migrate_disable are global, which makes them become hotspots in some case. Take BPF for example, the function calling to migrate_enable and migrate_disable in BPF trampoline can introduce significant overhead, and following is the 'perf top' of FENTRY's benchmark (./tools/testing/selftests/bpf/bench trig-fentry): 54.63% bpf_prog_2dcccf652aac1793_bench_trigger_fentry [k] bpf_prog_2dcccf652aac1793_bench_trigger_fentry 10.43% [kernel] [k] migrate_enable 10.07% bpf_trampoline_6442517037 [k] bpf_trampoline_6442517037 8.06% [kernel] [k] __bpf_prog_exit_recur 4.11% libc.so.6 [.] syscall 2.15% [kernel] [k] entry_SYSCALL_64 1.48% [kernel] [k] memchr_inv 1.32% [kernel] [k] fput 1.16% [kernel] [k] _copy_to_user 0.73% [kernel] [k] bpf_prog_test_run_raw_tp So in this commit, we make migrate_enable/migrate_disable inline to obtain better performance. The struct rq is defined internally in kernel/sched/sched.h, and the field \"nr_pinned\" is accessed in migrate_enable/migrate_disable, which makes it hard to make them inline. Alexei Starovoitov suggests to generate the offset of \"nr_pinned\" in [1], so we can define the migrate_enable/migrate_disable in include/linux/sched.h and access \"this_rq()->nr_pinned\" with \"(void *)this_rq() + RQ_nr_pinned\". The offset of \"nr_pinned\" is generated in include/generated/rq-offsets.h by kernel/sched/rq-offsets.c. Generally speaking, we move the definition of migrate_enable and migrate_disable to include/linux/sched.h from kernel/sched/core.c. The calling to __set_cpus_allowed_ptr() is leaved in ___migrate_enable(). The \"struct rq\" is not available in include/linux/sched.h, so we can't access the \"runqueues\" with this_cpu_ptr(), as the compilation will fail in this_cpu_ptr() -> raw_cpu_ptr() -> __verify_pcpu_ptr(): typeof((ptr) + 0) So we introduce the this_rq_raw() and access the runqueues with arch_raw_cpu_ptr/PERCPU_PTR directly. The variable \"runqueues\" is not visible in the kernel modules, and export it is not a good idea. As Peter Zijlstra advised in [2], we define and export migrate_enable/migrate_disable in kernel/sched/core.c too, and use them for the modules. Before this patch, the performance of BPF FENTRY is: fentry : 113.030 ± 0.149M/s fentry : 112.501 ± 0.187M/s fentry : 112.828 ± 0.267M/s fentry : 115.287 ± 0.241M/s After this patch, the performance of BPF FENTRY increases to: fentry : 143.644 ± 0.670M/s fentry : 149.764 ± 0.362M/s fentry : 149.642 ± 0.156M/s fentry : 145.263 ± 0.221M/s Signed-off-by: Menglong Dong <dongml2@chinatelecom.cn> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lore.kernel.org/bpf/CAADnVQ+5sEDKHdsJY5ZsfGDO_1SEhhQWHrt2SMBG5SYyQ+jt7w@mail.gmail.com/ [1] Link: https://lore.kernel.org/all/20250819123214.GH4067720@noisy.programming.kicks-ass.net/ [2]\" url=\"https://github.com/torvalds/linux/commit/378b7708194fff77c9020392067329931c3fcc04\"\n        uid=2_272 StaticText \"sched: Make migrate_{en,dis}able() inline\"\n      uid=2_273 StaticText \"7 months ago\"\n      uid=2_274 link \"Kconfig, (File)\" url=\"https://github.com/torvalds/linux/blob/master/Kconfig\"\n        uid=2_275 StaticText \"Kconfig\"\n      uid=2_276 link \"io_uring: Rename KConfig to Kconfig\" description=\"io_uring: Rename KConfig to Kconfig Kconfig files are traditionally named \"Kconfig\". Fixes: 6f377873cb239050 (\"io_uring/zcrx: add interface queue and refill queue\") Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://lore.kernel.org/r/5ae387c1465f54768b51a5a1ca87be7934c4b2ad.1739976387.git.geert+renesas@glider.be Signed-off-by: Jens Axboe <axboe@kernel.dk>\" url=\"https://github.com/torvalds/linux/commit/0d2cdc35e805eb50f4a33b7287995ef590f1b916\"\n    ...\n============\n\nThe Linux kernel is the core of any Linux operating system. It manages hardware,\nsystem resources, and provides the fundamental services for all other software.\n\nQuick Start\n-----------\n\n* Report a bug: See Documentation/admin-guide/reporting-issues.rst\n* Get the latest kernel: \"\n      uid=2_301 link \"https://kernel.org\" url=\"https://kernel.org/\"\n    ...\nWho Are You?\n============\n\nFind your role below:\n\n* New Kernel Developer - Getting started with kernel development\n* Academic Researcher - Studying kernel internals and architecture\n* Security Expert - Hardening and vulnerability analysis\n* Backport/Maintenance Engineer - Maintaining stable kernels\n* System Administrator - Configuring and troubleshooting\n* Maintainer - Leading subsystems and reviewing patches\n    ...\n==================\n\nNew Kernel Developer\n--------------------\n\nWelcome! Start your kernel development journey here:\n\n* Getting Started: Documentation/process/development-process.rst\n* Your First Patch: Documentation/process/submitting-patches.rst\n* Coding Style: Documentation/process/coding-style.rst\n* Build System: Documentation/kbuild/index.rst\n* Development Tools: Documentation/dev-tools/index.rst\n* Kernel Hacking Guide: Documentation/kernel-hacking/hacking.rst\n    ...\n      uid=2_321 heading \"License\" level=\"3\"\n      uid=2_322 link \" View license\" url=\"https://github.com/torvalds/linux#License-1-ov-file\"\n        uid=2_323 StaticText \" View license\"\n      uid=2_324 link \"Activity\" url=\"https://github.com/torvalds/linux/activity\"\n        uid=2_325 StaticText \"Activity\"\n      uid=2_326 heading \"Stars\" level=\"3\"\n      uid=2_327 link \"227k stars\" url=\"https://github.com/torvalds/linux/stargazers\"\n        uid=2_328 StaticText \"227k\"\n        uid=2_329 StaticText \" stars\"\n      uid=2_330 heading \"Watchers\" level=\"3\"\n      uid=2_331 link \"8.1k watching\" url=\"https://github.com/torvalds/linux/watchers\"\n        uid=2_332 StaticText \"8.1k\"\n        uid=2_333 StaticText \" watching\"\n      uid=2_334 heading \"Forks\" level=\"3\"\n    ...\n        uid=2_378 image \"@kuba-moo\" url=\"https://avatars.githubusercontent.com/u/6732289?s=64&v=4\"\n      uid=2_379 link \"@vsyrjala\" keyshortcuts=\"Alt+ArrowUp\" url=\"https://github.com/vsyrjala\"\n        uid=2_380 image \"@vsyrjala\" url=\"https://avatars.githubusercontent.com/u/1081303?s=64&v=4\"\n      uid=2_381 link \"+ 17,956 contributors\" url=\"https://github.com/torvalds/linux/graphs/contributors\"\n        uid=2_382 StaticText \"+ 17,956 contributors\"\n      uid=2_383 heading \"Languages\" level=\"2\"\n      uid=2_384 link \"C 98.0%\" url=\"https://github.com/torvalds/linux/search?l=c\"\n        uid=2_385 StaticText \"C\"\n        uid=2_386 StaticText \"98.0%\"\n      uid=2_387 link \"Assembly 0.7%\" url=\"https://github.com/torvalds/linux/search?l=assembly\"\n        uid=2_388 StaticText \"Assembly\"","stderr":"","interrupted":false,"isImage":false,"noOutputExpected":false}}
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