user/sven/linux.git/tools/include/uapi, branch master

tools headers UAPI: Sync linux/kvm.h with the kernel sources

2026-03-22T21:31:54Z

To pick the changes in: da142f3d373a6dda ("KVM: Remove subtle "struct kvm_stats_desc" pseudo-overlay") That just rebuilds perf, as these patches don't add any new KVM ioctl to be harvested for the 'perf trace' ioctl syscall argument beautifiers. This addresses this perf build warning: Warning: Kernel ABI header differences: diff -u tools/include/uapi/linux/kvm.h include/uapi/linux/kvm.h Please see tools/include/uapi/README for further details. Cc: Sean Christopherson Signed-off-by: Arnaldo Carvalho de Melo

tools headers: Update the syscall tables and unistd.h, to support the new 'rseq_slice_yield' syscall

2026-03-05T20:20:23Z

Picking up the changes from these csets: 2153b2e8917b73e9 ("sparc: Add architecture support for clone3") 99d2592023e5d0a3 ("rseq: Implement sys_rseq_slice_yield()") 4ac286c4a8d904c8 ("s390/syscalls: Switch to generic system call table generation") This makes 'perf trace' support it, now its possible, for instance, to do: # perf trace -e rseq_slice_yield --max-stack=16 Here is an example with the 'sendmmsg' syscall: root@x1:~# perf trace -e sendmmsg --max-stack 16 --max-events=1 0.000 ( 0.062 ms): dbus-broker/1012 sendmmsg(fd: 150, mmsg: 0x7ffef57cca50, vlen: 1, flags: DONTWAIT|NOSIGNAL) = 1 syscall_exit_to_user_mode_prepare ([kernel.kallsyms]) syscall_exit_to_user_mode_prepare ([kernel.kallsyms]) syscall_exit_to_user_mode ([kernel.kallsyms]) do_syscall_64 ([kernel.kallsyms]) entry_SYSCALL_64 ([kernel.kallsyms]) [0x117ce7] (/usr/lib64/libc.so.6 (deleted)) root@x1:~# To do a system wide tracing of the new 'rseq_slice_yield' syscall with a backtrace of at most 16 entries. This addresses these perf tools build warnings: Warning: Kernel ABI header differences: diff -u tools/include/uapi/asm-generic/unistd.h include/uapi/asm-generic/unistd.h diff -u tools/scripts/syscall.tbl scripts/syscall.tbl diff -u tools/perf/arch/x86/entry/syscalls/syscall_32.tbl arch/x86/entry/syscalls/syscall_32.tbl diff -u tools/perf/arch/x86/entry/syscalls/syscall_64.tbl arch/x86/entry/syscalls/syscall_64.tbl diff -u tools/perf/arch/powerpc/entry/syscalls/syscall.tbl arch/powerpc/kernel/syscalls/syscall.tbl diff -u tools/perf/arch/s390/entry/syscalls/syscall.tbl arch/s390/kernel/syscalls/syscall.tbl diff -u tools/perf/arch/mips/entry/syscalls/syscall_n64.tbl arch/mips/kernel/syscalls/syscall_n64.tbl diff -u tools/perf/arch/arm/entry/syscalls/syscall.tbl arch/arm/tools/syscall.tbl diff -u tools/perf/arch/sh/entry/syscalls/syscall.tbl arch/sh/kernel/syscalls/syscall.tbl diff -u tools/perf/arch/sparc/entry/syscalls/syscall.tbl arch/sparc/kernel/syscalls/syscall.tbl diff -u tools/perf/arch/xtensa/entry/syscalls/syscall.tbl arch/xtensa/kernel/syscalls/syscall.tbl Cc: Andreas Larsson Cc: Heiko Carstens Cc: Ludwig Rydberg Cc: Peter Zijlstra Cc: Thomas Gleixner Signed-off-by: Arnaldo Carvalho de Melo

tools headers UAPI: Sync linux/kvm.h with the kernel sources

2026-03-04T15:32:19Z

To pick the changes in: f7ab71f178d56447 ("KVM: s390: Add explicit padding to struct kvm_s390_keyop") 0ee4ddc1647b8b3b ("KVM: s390: Storage key manipulation IOCTL") fa9893fadbc245e1 ("KVM: Introduce KVM_EXIT_SNP_REQ_CERTS for SNP certificate-fetching") f174a9ffcd48d78a ("KVM: arm64: Add exit to userspace on {LD,ST}64B* outside of memslots") That just rebuilds perf, as these patches add just one new KVM ioctl, but for S390, that is not being considered by tools/perf/trace/beauty/kvm_ioctl.sh so far. This addresses this perf build warning: Warning: Kernel ABI header differences: diff -u tools/include/uapi/linux/kvm.h include/uapi/linux/kvm.h Please see tools/include/uapi/README for further details. Cc: Arnd Bergmann Cc: Claudio Imbrenda Cc: Marc Zyngier Cc: Michael Roth Cc: Sean Christopherson Cc: Will Deacon Signed-off-by: Arnaldo Carvalho de Melo

perf beauty: Update the linux/perf_event.h copy with the kernel sources

2026-03-04T14:51:36Z

Update it as one comment got realigned, probably in a merge, so no changes in perf tooling, just silences this build warning: Warning: Kernel ABI header differences: diff -u tools/include/uapi/linux/perf_event.h include/uapi/linux/perf_event.h Signed-off-by: Arnaldo Carvalho de Melo

Merge tag 'perf-core-2026-02-09' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2026-02-10T20:00:46Z

Pull performance event updates from Ingo Molnar: "x86 PMU driver updates: - Add support for the core PMU for Intel Diamond Rapids (DMR) CPUs (Dapeng Mi) Compared to previous iterations of the Intel PMU code, there's been a lot of changes, which center around three main areas: - Introduce the OFF-MODULE RESPONSE (OMR) facility to replace the Off-Core Response (OCR) facility - New PEBS data source encoding layout - Support the new "RDPMC user disable" feature - Likewise, a large series adds uncore PMU support for Intel Diamond Rapids (DMR) CPUs (Zide Chen) This centers around these four main areas: - DMR may have two Integrated I/O and Memory Hub (IMH) dies, separate from the compute tile (CBB) dies. Each CBB and each IMH die has its own discovery domain. - Unlike prior CPUs that retrieve the global discovery table portal exclusively via PCI or MSR, DMR uses PCI for IMH PMON discovery and MSR for CBB PMON discovery. - DMR introduces several new PMON types: SCA, HAMVF, D2D_ULA, UBR, PCIE4, CRS, CPC, ITC, OTC, CMS, and PCIE6. - IIO free-running counters in DMR are MMIO-based, unlike SPR. - Also add support for Add missing PMON units for Intel Panther Lake, and support Nova Lake (NVL), which largely maps to Panther Lake. (Zide Chen) - KVM integration: Add support for mediated vPMUs (by Kan Liang and Sean Christopherson, with fixes and cleanups by Peter Zijlstra, Sandipan Das and Mingwei Zhang) - Add Intel cstate driver to support for Wildcat Lake (WCL) CPUs, which are a low-power variant of Panther Lake (Zide Chen) - Add core, cstate and MSR PMU support for the Airmont NP Intel CPU (aka MaxLinear Lightning Mountain), which maps to the existing Airmont code (Martin Schiller) Performance enhancements: - Speed up kexec shutdown by avoiding unnecessary cross CPU calls (Jan H. Schönherr) - Fix slow perf_event_task_exit() with LBR callstacks (Namhyung Kim) User-space stack unwinding support: - Various cleanups and refactorings in preparation to generalize the unwinding code for other architectures (Jens Remus) Uprobes updates: - Transition from kmap_atomic to kmap_local_page (Keke Ming) - Fix incorrect lockdep condition in filter_chain() (Breno Leitao) - Fix XOL allocation failure for 32-bit tasks (Oleg Nesterov) Misc fixes and cleanups: - s390: Remove kvm_types.h from Kbuild (Randy Dunlap) - x86/intel/uncore: Convert comma to semicolon (Chen Ni) - x86/uncore: Clean up const mismatch (Greg Kroah-Hartman) - x86/ibs: Fix typo in dc_l2tlb_miss comment (Xiang-Bin Shi)" * tag 'perf-core-2026-02-09' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (58 commits) s390: remove kvm_types.h from Kbuild uprobes: Fix incorrect lockdep condition in filter_chain() x86/ibs: Fix typo in dc_l2tlb_miss comment x86/uprobes: Fix XOL allocation failure for 32-bit tasks perf/x86/intel/uncore: Convert comma to semicolon perf/x86/intel: Add support for rdpmc user disable feature perf/x86: Use macros to replace magic numbers in attr_rdpmc perf/x86/intel: Add core PMU support for Novalake perf/x86/intel: Add support for PEBS memory auxiliary info field in NVL perf/x86/intel: Add core PMU support for DMR perf/x86/intel: Add support for PEBS memory auxiliary info field in DMR perf/x86/intel: Support the 4 new OMR MSRs introduced in DMR and NVL perf/core: Fix slow perf_event_task_exit() with LBR callstacks perf/core: Speed up kexec shutdown by avoiding unnecessary cross CPU calls uprobes: use kmap_local_page() for temporary page mappings arm/uprobes: use kmap_local_page() in arch_uprobe_copy_ixol() mips/uprobes: use kmap_local_page() in arch_uprobe_copy_ixol() arm64/uprobes: use kmap_local_page() in arch_uprobe_copy_ixol() riscv/uprobes: use kmap_local_page() in arch_uprobe_copy_ixol() perf/x86/intel/uncore: Add Nova Lake support ...

Merge tag 'bpf-next-7.0' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next

2026-02-10T19:26:21Z

Pull bpf updates from Alexei Starovoitov: - Support associating BPF program with struct_ops (Amery Hung) - Switch BPF local storage to rqspinlock and remove recursion detection counters which were causing false positives (Amery Hung) - Fix live registers marking for indirect jumps (Anton Protopopov) - Introduce execution context detection BPF helpers (Changwoo Min) - Improve verifier precision for 32bit sign extension pattern (Cupertino Miranda) - Optimize BTF type lookup by sorting vmlinux BTF and doing binary search (Donglin Peng) - Allow states pruning for misc/invalid slots in iterator loops (Eduard Zingerman) - In preparation for ASAN support in BPF arenas teach libbpf to move global BPF variables to the end of the region and enable arena kfuncs while holding locks (Emil Tsalapatis) - Introduce support for implicit arguments in kfuncs and migrate a number of them to new API. This is a prerequisite for cgroup sub-schedulers in sched-ext (Ihor Solodrai) - Fix incorrect copied_seq calculation in sockmap (Jiayuan Chen) - Fix ORC stack unwind from kprobe_multi (Jiri Olsa) - Speed up fentry attach by using single ftrace direct ops in BPF trampolines (Jiri Olsa) - Require frozen map for calculating map hash (KP Singh) - Fix lock entry creation in TAS fallback in rqspinlock (Kumar Kartikeya Dwivedi) - Allow user space to select cpu in lookup/update operations on per-cpu array and hash maps (Leon Hwang) - Make kfuncs return trusted pointers by default (Matt Bobrowski) - Introduce "fsession" support where single BPF program is executed upon entry and exit from traced kernel function (Menglong Dong) - Allow bpf_timer and bpf_wq use in all programs types (Mykyta Yatsenko, Andrii Nakryiko, Kumar Kartikeya Dwivedi, Alexei Starovoitov) - Make KF_TRUSTED_ARGS the default for all kfuncs and clean up their definition across the tree (Puranjay Mohan) - Allow BPF arena calls from non-sleepable context (Puranjay Mohan) - Improve register id comparison logic in the verifier and extend linked registers with negative offsets (Puranjay Mohan) - In preparation for BPF-OOM introduce kfuncs to access memcg events (Roman Gushchin) - Use CFI compatible destructor kfunc type (Sami Tolvanen) - Add bitwise tracking for BPF_END in the verifier (Tianci Cao) - Add range tracking for BPF_DIV and BPF_MOD in the verifier (Yazhou Tang) - Make BPF selftests work with 64k page size (Yonghong Song) * tag 'bpf-next-7.0' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next: (268 commits) selftests/bpf: Fix outdated test on storage->smap selftests/bpf: Choose another percpu variable in bpf for btf_dump test selftests/bpf: Remove test_task_storage_map_stress_lookup selftests/bpf: Update task_local_storage/task_storage_nodeadlock test selftests/bpf: Update task_local_storage/recursion test selftests/bpf: Update sk_storage_omem_uncharge test bpf: Switch to bpf_selem_unlink_nofail in bpf_local_storage_{map_free, destroy} bpf: Support lockless unlink when freeing map or local storage bpf: Prepare for bpf_selem_unlink_nofail() bpf: Remove unused percpu counter from bpf_local_storage_map_free bpf: Remove cgroup local storage percpu counter bpf: Remove task local storage percpu counter bpf: Change local_storage->lock and b->lock to rqspinlock bpf: Convert bpf_selem_unlink to failable bpf: Convert bpf_selem_link_map to failable bpf: Convert bpf_selem_unlink_map to failable bpf: Select bpf_local_storage_map_bucket based on bpf_local_storage selftests/xsk: fix number of Tx frags in invalid packet selftests/xsk: properly handle batch ending in the middle of a packet bpf: Prevent reentrance into call_rcu_tasks_trace() ...

Merge tag 'vfs-7.0-rc1.fserror' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs

2026-02-09T20:21:37Z

Pull vfs error reporting updates from Christian Brauner: "This contains the changes to support generic I/O error reporting. Filesystems currently have no standard mechanism for reporting metadata corruption and file I/O errors to userspace via fsnotify. Each filesystem (xfs, ext4, erofs, f2fs, etc.) privately defines EFSCORRUPTED, and error reporting to fanotify is inconsistent or absent entirely. This introduces a generic fserror infrastructure built around struct super_block that gives filesystems a standard way to queue metadata and file I/O error reports for delivery to fsnotify. Errors are queued via mempools and queue_work to avoid holding filesystem locks in the notification path; unmount waits for pending events to drain. A new super_operations::report_error callback lets filesystem drivers respond to file I/O errors themselves (to be used by an upcoming XFS self-healing patchset). On the uapi side, EFSCORRUPTED and EUCLEAN are promoted from private per-filesystem definitions to canonical errno.h values across all architectures" * tag 'vfs-7.0-rc1.fserror' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs: ext4: convert to new fserror helpers xfs: translate fsdax media errors into file "data lost" errors when convenient xfs: report fs metadata errors via fsnotify iomap: report file I/O errors to the VFS fs: report filesystem and file I/O errors to fsnotify uapi: promote EFSCORRUPTED and EUCLEAN to errno.h

bpf: add new BPF_CGROUP_ITER_CHILDREN control option

2026-01-27T17:05:54Z

Currently, the BPF cgroup iterator supports walking descendants in either pre-order (BPF_CGROUP_ITER_DESCENDANTS_PRE) or post-order (BPF_CGROUP_ITER_DESCENDANTS_POST). These modes perform an exhaustive depth-first search (DFS) of the hierarchy. In scenarios where a BPF program may need to inspect only the direct children of a given parent cgroup, a full DFS is unnecessarily expensive. This patch introduces a new BPF cgroup iterator control option, BPF_CGROUP_ITER_CHILDREN. This control option restricts the traversal to the immediate children of a specified parent cgroup, allowing for more targeted and efficient iteration, particularly when exhaustive depth-first search (DFS) traversal is not required. Signed-off-by: Matt Bobrowski Link: https://lore.kernel.org/r/20260127085112.3608687-1-mattbobrowski@google.com Signed-off-by: Alexei Starovoitov

bpf: add fsession support

2026-01-25T02:49:35Z

The fsession is something that similar to kprobe session. It allow to attach a single BPF program to both the entry and the exit of the target functions. Introduce the struct bpf_fsession_link, which allows to add the link to both the fentry and fexit progs_hlist of the trampoline. Signed-off-by: Menglong Dong Co-developed-by: Leon Hwang Signed-off-by: Leon Hwang Link: https://lore.kernel.org/r/20260124062008.8657-2-dongml2@chinatelecom.cn Signed-off-by: Alexei Starovoitov

perf/x86/intel: Add support for PEBS memory auxiliary info field in DMR

2026-01-15T09:04:26Z

With the introduction of the OMR feature, the PEBS memory auxiliary info field for load and store latency events has been restructured for DMR. The memory auxiliary info field's bit[8] indicates whether a L2 cache miss occurred for a memory load or store instruction. If bit[8] is 0, it signifies no L2 cache miss, and bits[7:0] specify the exact cache data source (up to the L2 cache level). If bit[8] is 1, bits[7:0] represent the OMR encoding, indicating the specific L3 cache or memory region involved in the memory access. A significant enhancement is OMR encoding provides up to 8 fine-grained memory regions besides the cache region. A significant enhancement for OMR encoding is the ability to provide up to 8 fine-grained memory regions in addition to the cache region, offering more detailed insights into memory access regions. For detailed information on the memory auxiliary info encoding, please refer to section 16.2 "PEBS LOAD LATENCY AND STORE LATENCY FACILITY" in the ISE documentation. This patch ensures that the PEBS memory auxiliary info field is correctly interpreted and utilized in DMR. Signed-off-by: Dapeng Mi Signed-off-by: Peter Zijlstra (Intel) Link: https://patch.msgid.link/20260114011750.350569-3-dapeng1.mi@linux.intel.com