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2025-07-15Merge tag 'hid-for-linus-2025071501' of ↵Linus Torvalds1-0/+70
git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid Pull HID fixes from Benjamin Tissoires: - one warning cleanup introduced in the last PR (Andy Shevchenko) - a nasty syzbot buffer underflow fix co-debugged with Alan Stern (Benjamin Tissoires) * tag 'hid-for-linus-2025071501' of git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid: selftests/hid: add a test case for the recent syzbot underflow HID: core: do not bypass hid_hw_raw_request HID: core: ensure __hid_request reserves the report ID as the first byte HID: core: ensure the allocated report buffer can contain the reserved report ID HID: debug: Remove duplicate entry (BTN_WHEEL)
2025-07-15cxl: Remove core/acpi.c and cxl core dependency on ACPIRobert Richter1-1/+0
From Dave [1]: """ It was a mistake to introduce core/acpi.c and putting ACPI dependency on cxl_core when adding the extended linear cache support. """ Current implementation calls hmat_get_extended_linear_cache_size() of the ACPI subsystem. That external reference causes issue running cxl_test as there is no way to "mock" that function and ignore it when using cxl test. Instead of working around that using cxlrd ops and extensively expanding cxl_test code [1], just move HMAT calls out of the core module to cxl_acpi. Implement this by adding a @cache_size member to struct cxl_root_decoder. During initialization the cache size is determined and added to the root decoder object in cxl_acpi. Later on in cxl_core the cache_size parameter is used to setup extended linear caching. [1] https://patch.msgid.link/20250610172938.139428-1-dave.jiang@intel.com [ dj: Remove core/acpi.o from tools/testing/cxl/Kbuild ] [ dj: Add kdoc for cxlrd->cache_size ] Cc: Dave Jiang <dave.jiang@intel.com> Signed-off-by: Robert Richter <rrichter@amd.com> Reviewed-by: Alison Schofield <alison.schofield@intel.com> Reviewed-by: Jonathan Cameron <jonathan.cameron@huawei.com> Reviewed-by: Dave Jiang <dave.jiang@intel.com> Link: https://patch.msgid.link/20250711151529.787470-1-rrichter@amd.com Signed-off-by: Dave Jiang <dave.jiang@intel.com>
2025-07-15selftests: ublk: add utils.hMing Lei2-62/+72
Signed-off-by: Ming Lei <ming.lei@redhat.com> Link: https://lore.kernel.org/r/20250713143415.2857561-18-ming.lei@redhat.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
2025-07-15selftests: ublk: add helper ublk_handle_uring_cmd() for handle ublk commandMing Lei1-27/+34
Add helper ublk_handle_uring_cmd() for handling ublk command, and make ublk_handle_cqe() more readable. Signed-off-by: Ming Lei <ming.lei@redhat.com> Link: https://lore.kernel.org/r/20250713143415.2857561-17-ming.lei@redhat.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
2025-07-15selftests: ublk: improve flags namingMing Lei2-32/+29
Improve all kinds of flags naming by adding its host structure suffix for making code more readable. Signed-off-by: Ming Lei <ming.lei@redhat.com> Link: https://lore.kernel.org/r/20250713143415.2857561-16-ming.lei@redhat.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
2025-07-15selftests: ublk: remove ublk queue self-defined flagsMing Lei3-24/+25
Remove ublk queue self-defined flags, and use the uapi flags directly. Signed-off-by: Ming Lei <ming.lei@redhat.com> Link: https://lore.kernel.org/r/20250713143415.2857561-15-ming.lei@redhat.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
2025-07-15selftests: ublk: pass 'ublk_thread *' to more common helpersMing Lei6-29/+28
Pass 'ublk_thread *' to more common helpers, then we can avoid to store this reference into 'struct ublk_io'. Prepare for supporting to handle IO via different task context. Signed-off-by: Ming Lei <ming.lei@redhat.com> Link: https://lore.kernel.org/r/20250713143415.2857561-14-ming.lei@redhat.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
2025-07-15selftests: ublk: pass 'ublk_thread *' to ->queue_io() and ->tgt_io_done()Ming Lei6-44/+58
'struct thread' is task local structure, and the related code will become more readable if we pass it via parameter. Meantime pass 'ublk_thread *' to ublk_io_alloc_sqes(), and this way is natural since we use per-thread io_uring for handling IO. More importantly it helps much for removing the current ubq_daemon or per-io-task limit. Signed-off-by: Ming Lei <ming.lei@redhat.com> Link: https://lore.kernel.org/r/20250713143415.2857561-13-ming.lei@redhat.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
2025-07-15selftests: ublk: remove `tag` parameter of ->tgt_io_done()Ming Lei6-9/+10
The `tag` parameter can be figured out from cqe->user_data, and that is also the only way to get the info, so remove `tag` parameter, and let target code retrieve it from cqe->user_data. Signed-off-by: Ming Lei <ming.lei@redhat.com> Link: https://lore.kernel.org/r/20250713143415.2857561-12-ming.lei@redhat.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
2025-07-15selftests: net: increase inter-packet timeout in udpgro.shPaolo Abeni1-4/+4
The mentioned test is not very stable when running on top of debug kernel build. Increase the inter-packet timeout to allow more slack in such environments. Fixes: 3327a9c46352 ("selftests: add functionals test for UDP GRO") Reviewed-by: Simon Horman <horms@kernel.org> Link: https://patch.msgid.link/b0370c06ddb3235debf642c17de0284b2cd3c652.1752163107.git.pabeni@redhat.com Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2025-07-15tools/hv: fcopy: Fix irregularities with size of ring bufferNaman Jain1-10/+81
Size of ring buffer, as defined in uio_hv_generic driver, is no longer fixed to 16 KB. This creates a problem in fcopy, since this size was hardcoded. With the change in place to make ring sysfs node actually reflect the size of underlying ring buffer, it is safe to get the size of ring sysfs file and use it for ring buffer size in fcopy daemon. Fix the issue of disparity in ring buffer size, by making it dynamic in fcopy uio daemon. Cc: stable@vger.kernel.org Fixes: 0315fef2aff9 ("uio_hv_generic: Align ring size to system page") Signed-off-by: Naman Jain <namjain@linux.microsoft.com> Reviewed-by: Saurabh Sengar <ssengar@linux.microsoft.com> Reviewed-by: Long Li <longli@microsoft.com> Link: https://lore.kernel.org/r/20250711060846.9168-1-namjain@linux.microsoft.com Signed-off-by: Wei Liu <wei.liu@kernel.org> Message-ID: <20250711060846.9168-1-namjain@linux.microsoft.com>
2025-07-15perf ftrace latency: Add -e option to measure time between two eventsNamhyung Kim5-75/+205
In addition to the function latency, it can measure events latencies. Some kernel tracepoints are paired and it's menningful to measure how long it takes between the two events. The latency is tracked for the same thread. Currently it only uses BPF to do the work but it can be lifted later. Instead of having separate a BPF program for each tracepoint, it only uses generic 'event_begin' and 'event_end' programs to attach to any (raw) tracepoints. $ sudo perf ftrace latency -a -b --hide-empty \ -e i915_request_wait_begin,i915_request_wait_end -- sleep 1 # DURATION | COUNT | GRAPH | 256 - 512 us | 4 | ###### | 2 - 4 ms | 2 | ### | 4 - 8 ms | 12 | ################### | 8 - 16 ms | 10 | ################ | # statistics (in usec) total time: 194915 avg time: 6961 max time: 12855 min time: 373 count: 28 Reviewed-by: Ian Rogers <irogers@google.com> Link: https://lore.kernel.org/r/20250714052143.342851-1-namhyung@kernel.org Signed-off-by: Namhyung Kim <namhyung@kernel.org>
2025-07-15selftests/net: packetdrill: add tcp_rcv_toobig.pktEric Dumazet1-0/+33
Check that TCP receiver behavior after "tcp: stronger sk_rcvbuf checks" Too fat packet is dropped unless receive queue is empty. Signed-off-by: Eric Dumazet <edumazet@google.com> Reviewed-by: Kuniyuki Iwashima <kuniyu@google.com> Link: https://patch.msgid.link/20250711114006.480026-9-edumazet@google.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-07-15selftests/net: packetdrill: add tcp_ooo_rcv_mss.pktEric Dumazet1-0/+27
We make sure tcpi_rcv_mss and tp->scaling_ratio are correctly updated if no in-order packet has been received yet. Signed-off-by: Eric Dumazet <edumazet@google.com> Reviewed-by: Kuniyuki Iwashima <kuniyu@google.com> Link: https://patch.msgid.link/20250711114006.480026-6-edumazet@google.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-07-15selftests/net: packetdrill: add tcp_rcv_big_endseq.pktEric Dumazet1-0/+44
This test checks TCP behavior when receiving a packet beyond the window. It checks the new TcpExtBeyondWindow SNMP counter. Signed-off-by: Eric Dumazet <edumazet@google.com> Reviewed-by: Kuniyuki Iwashima <kuniyu@google.com> Link: https://patch.msgid.link/20250711114006.480026-4-edumazet@google.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-07-15Add support to set NAPI threaded for individual NAPISamiullah Khawaja2-1/+91
A net device has a threaded sysctl that can be used to enable threaded NAPI polling on all of the NAPI contexts under that device. Allow enabling threaded NAPI polling at individual NAPI level using netlink. Extend the netlink operation `napi-set` and allow setting the threaded attribute of a NAPI. This will enable the threaded polling on a NAPI context. Add a test in `nl_netdev.py` that verifies various cases of threaded NAPI being set at NAPI and at device level. Tested ./tools/testing/selftests/net/nl_netdev.py TAP version 13 1..7 ok 1 nl_netdev.empty_check ok 2 nl_netdev.lo_check ok 3 nl_netdev.page_pool_check ok 4 nl_netdev.napi_list_check ok 5 nl_netdev.dev_set_threaded ok 6 nl_netdev.napi_set_threaded ok 7 nl_netdev.nsim_rxq_reset_down # Totals: pass:7 fail:0 xfail:0 xpass:0 skip:0 error:0 Signed-off-by: Samiullah Khawaja <skhawaja@google.com> Reviewed-by: Willem de Bruijn <willemb@google.com> Link: https://patch.msgid.link/20250710211203.3979655-1-skhawaja@google.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-07-15selftests: net: add test for variable PMTU in broadcast routesOscar Maes2-0/+48
Added a test for variable PMTU in broadcast routes. This test uses iputils' ping and attempts to send a ping between two peers, which should result in a regular echo reply. This test will fail when the receiving peer does not receive the echo request due to a lack of packet fragmentation. Signed-off-by: Oscar Maes <oscmaes92@gmail.com> Link: https://patch.msgid.link/20250710142714.12986-2-oscmaes92@gmail.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-07-15selftests/tc-testing: Create test cases for adding qdiscs to invalid qdisc ↵Victor Nogueira1-0/+66
parents As described in a previous commit [1], Lion's patch [2] revealed an ancient bug in the qdisc API. Whenever a user tries to add a qdisc to an invalid parent (not a class, root, or ingress qdisc), the qdisc API will detect this after qdisc_create is called. Some qdiscs (like fq_codel, pie, and sfq) call functions (on their init callback) which assume the parent is valid, so qdisc_create itself may have caused a NULL pointer dereference in such cases. This commit creates 3 TDC tests that attempt to add fq_codel, pie and sfq qdiscs to invalid parents - Attempts to add an fq_codel qdisc to an hhf qdisc parent - Attempts to add a pie qdisc to a drr qdisc parent - Attempts to add an sfq qdisc to an inexistent hfsc classid (which would belong to a valid hfsc qdisc) [1] https://lore.kernel.org/all/20250707210801.372995-1-victor@mojatatu.com/ [2] https://lore.kernel.org/netdev/d912cbd7-193b-4269-9857-525bee8bbb6a@gmail.com/ Signed-off-by: Victor Nogueira <victor@mojatatu.com> Link: https://patch.msgid.link/20250712145035.705156-1-victor@mojatatu.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-07-15selftests: drv-net: add rss_api to the MakefileJakub Kicinski1-0/+1
I missed adding rss_api.py to the Makefile. The NIPA Makefile checking script was scanning for shell scripts only, so it didn't flag it either. Fixes: 4d13c6c449af ("selftests: drv-net: test RSS Netlink notifications") Reviewed-by: Simon Horman <horms@kernel.org> Link: https://patch.msgid.link/20250712012005.4010263-1-kuba@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-07-15selftests/bpf: Add tests for bucket resume logic in established socketsJordan Rife1-0/+293
Replicate the set of test cases used for UDP socket iterators to test similar scenarios for TCP established sockets. Signed-off-by: Jordan Rife <jordan@jrife.io> Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org> Acked-by: Stanislav Fomichev <sdf@fomichev.me>
2025-07-15selftests/bpf: Create iter_tcp_destroy test programJordan Rife1-0/+21
Prepare for bucket resume tests for established TCP sockets by creating a program to immediately destroy and remove sockets from the TCP ehash table, since close() is not deterministic. Signed-off-by: Jordan Rife <jordan@jrife.io> Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org> Acked-by: Stanislav Fomichev <sdf@fomichev.me>
2025-07-15selftests/bpf: Create established sockets in socket iterator testsJordan Rife1-4/+85
Prepare for bucket resume tests for established TCP sockets by creating established sockets. Collect socket fds from connect() and accept() sides and pass them to test cases. Signed-off-by: Jordan Rife <jordan@jrife.io> Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org> Acked-by: Stanislav Fomichev <sdf@fomichev.me>
2025-07-15selftests/bpf: Make ehash buckets configurable in socket iterator testsJordan Rife1-1/+18
Prepare for bucket resume tests for established TCP sockets by making the number of ehash buckets configurable. Subsequent patches force all established sockets into the same bucket by setting ehash_buckets to one. Signed-off-by: Jordan Rife <jordan@jrife.io> Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org> Acked-by: Stanislav Fomichev <sdf@fomichev.me>
2025-07-15objtool/rust: add one more `noreturn` Rust function for Rust 1.89.0Miguel Ojeda1-0/+1
Starting with Rust 1.89.0 (expected 2025-08-07), under `CONFIG_RUST_DEBUG_ASSERTIONS=y`, `objtool` may report: rust/kernel.o: warning: objtool: _R..._6kernel4pageNtB5_4Page8read_raw() falls through to next function _R..._6kernel4pageNtB5_4Page9write_raw() (and many others) due to calls to the `noreturn` symbol: core::panicking::panic_nounwind_fmt Thus add the mangled one to the list so that `objtool` knows it is actually `noreturn`. See commit 56d680dd23c3 ("objtool/rust: list `noreturn` Rust functions") for more details. Cc: stable@vger.kernel.org # Needed in 6.12.y and later (Rust is pinned in older LTSs). Cc: Josh Poimboeuf <jpoimboe@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lore.kernel.org/r/20250712160103.1244945-2-ojeda@kernel.org Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
2025-07-14selftests/bpf: Allow for iteration over multiple statesJordan Rife2-5/+9
Add parentheses around loopback address check to fix up logic and make the socket state filter configurable for the TCP socket iterators. Iterators can skip the socket state check by setting ss to 0. Signed-off-by: Jordan Rife <jordan@jrife.io> Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org> Acked-by: Stanislav Fomichev <sdf@fomichev.me>
2025-07-14selftests/bpf: Allow for iteration over multiple portsJordan Rife2-5/+6
Prepare to test TCP socket iteration over both listening and established sockets by allowing the BPF iterator programs to skip the port check. Signed-off-by: Jordan Rife <jordan@jrife.io> Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org> Acked-by: Stanislav Fomichev <sdf@fomichev.me>
2025-07-14selftests/bpf: Add tests for bucket resume logic in listening socketsJordan Rife1-0/+47
Replicate the set of test cases used for UDP socket iterators to test similar scenarios for TCP listening sockets. Signed-off-by: Jordan Rife <jordan@jrife.io> Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org> Acked-by: Stanislav Fomichev <sdf@fomichev.me>
2025-07-14Merge branch 'tip/sched/urgent'Peter Zijlstra76-222/+1323
Avoid merge conflicts Signed-off-by: Peter Zijlstra <peterz@infradead.org>
2025-07-14selftests: netfilter: nft_concat_range.sh: send packets to empty setFlorian Westphal1-0/+3
The selftest doesn't cover this error path: scratch = *raw_cpu_ptr(m->scratch); if (unlikely(!scratch)) { // here cover this too. Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2025-07-14selftests: netfilter: conntrack_resize.sh: also use udpclash toolFlorian Westphal1-0/+17
Previous patch added a new clash resolution test case. Also use this during conntrack resize stress test in addition to icmp ping flood. Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2025-07-14selftests: netfilter: add conntrack clash resolution test caseFlorian Westphal4-0/+337
Add a dedicated test to exercise conntrack clash resolution path. Test program emits 128 identical udp packets in parallel, then reads back replies from socat echo server. Also check (via conntrack -S) that the clash path was hit at least once. Due to the racy nature of the test its possible that despite the threaded program all packets were processed in-order or on same cpu, emit a SKIP warning in this case. Two tests are added: - one to test the simpler, non-nat case - one to exercise clash resolution where packets might have different nat transformations attached to them. Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2025-07-14selftests: netfilter: conntrack_resize.sh: extend resize testFlorian Westphal1-5/+75
Extend the resize test: - continuously dump table both via /proc and ctnetlink interfaces while table is resized in a loop. - if socat is available, send udp packets in additon to ping requests. - increase/decrease the icmp and udp timeouts while resizes are happening. This makes sure we also exercise the 'ct has expired' check that happens on conntrack lookup. Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2025-07-14tools/sched: Add dl_bw_dump.py for printing bandwidth accounting infoJuri Lelli1-0/+57
dl_rq bandwidth accounting information is crucial for the correct functioning of SCHED_DEADLINE. Add a drgn script for accessing that information at runtime, so that it's easier to check and debug issues related to it. Signed-off-by: Juri Lelli <juri.lelli@redhat.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Tested-by: Marcel Ziswiler <marcel.ziswiler@codethink.co.uk> # nuc & rock5b Link: https://lore.kernel.org/r/20250627115118.438797-6-juri.lelli@redhat.com
2025-07-14tools/sched: Add root_domains_dump.py which dumps root domains infoJuri Lelli1-0/+68
Root domains information is somewhat hard to access at runtime. Even with sched_debug and sched_verbose, such information is only printed on kernel console when domains are modified. Add a simple drgn script to more easily retrieve root domains information at runtime. Since tools/sched is a new directory, add it to MAINTAINERS as well. Signed-off-by: Juri Lelli <juri.lelli@redhat.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Tested-by: Marcel Ziswiler <marcel.ziswiler@codethink.co.uk> # nuc & rock5b Link: https://lore.kernel.org/r/20250627115118.438797-5-juri.lelli@redhat.com
2025-07-14tools/bootconfig: Cleanup bootconfig footer size calculationsMasami Hiramatsu (Google)1-8/+11
There are many same pattern of 8 + BOOTCONFIG_MAGIC_LEN for calculating the size of bootconfig footer. Use BOOTCONFIG_FOOTER_SIZE macro to clean up those magic numbers. Link: https://lore.kernel.org/all/175211425693.2591046.16029516706923643510.stgit@mhiramat.tok.corp.google.com/ Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
2025-07-14tools/bootconfig: Replace some echo with printf for more portabilityMasami Hiramatsu (Google)1-10/+10
Since echo is not portable, use printf instead. This fixes a wrong test result formatting in some environment. (showing "\t\t[OK]") Also this uses printf command for generating test data instead of echo. Link: https://lore.kernel.org/all/175211424942.2591046.5439447789303314213.stgit@mhiramat.tok.corp.google.com/ Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
2025-07-14tools/bootconfig: Improve portabilityMasami Hiramatsu (Google)1-6/+7
Since 'stat' command and 'truncate' command are GNU extension, use 'wc' and 'dd' commands instead. Link: https://lore.kernel.org/all/175211424184.2591046.3523297993175066026.stgit@mhiramat.tok.corp.google.com/ Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
2025-07-14tools: bootconfig: Regex enclosed with quotes to make syntax highlight properBhaskar Chowdhury1-2/+2
As suggested, changed the square brackets escaping to quote the whole Regex class. Link: https://lore.kernel.org/all/20250709030141.27483-1-unixbhaskar@gmail.com/ Signed-off-by: Bhaskar Chowdhury <unixbhaskar@gmail.com> Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
2025-07-14tools/testing/selftests: add mremap() unfaulted/faulted test casesLorenzo Stoakes3-2/+608
Assert that mremap() behaviour is as expected when moving around unfaulted VMAs immediately adjacent to faulted ones, as well as moving around faulted VMAs and placing them back immediately adjacent to the VMA from which they were moved. This also introduces a shared helper for the syscall version of mremap() so we don't encounter any issues with libc filtering parameters. Link: https://lkml.kernel.org/r/20250702084717.21360-1-lorenzo.stoakes@oracle.com Signed-off-by: Lorenzo Stoakes <lorenzo.stoakes@oracle.com> Cc: Jann Horn <jannh@google.com> Cc: Liam Howlett <liam.howlett@oracle.com> Cc: Vlastimil Babka <vbabka@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2025-07-14selftests/damon/sysfs.py: test DAMOS schemes parameters setupSeongJae Park1-3/+43
Add DAMON sysfs interface functionality tests for basic DAMOS schemes parameters setup. Link: https://lkml.kernel.org/r/20250628160428.53115-7-sj@kernel.org Signed-off-by: SeongJae Park <sj@kernel.org> Cc: Shuah Khan <shuah@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2025-07-14selftests/damon/sysfs.py: test adaptive targets parameterSeongJae Park1-3/+6
Add DAMON sysfs interface functionality tests for setup of basic adaptive targets parameters. Link: https://lkml.kernel.org/r/20250628160428.53115-6-sj@kernel.org Signed-off-by: SeongJae Park <sj@kernel.org> Cc: Shuah Khan <shuah@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2025-07-14selftests/damon/sysfs.py: test monitoring attribute parametersSeongJae Park1-2/+32
Add DAMON sysfs interface functionality tests for DAMON monitoring attribute parameters, including intervals, intervals tuning goals, and min/max number of regions. Link: https://lkml.kernel.org/r/20250628160428.53115-5-sj@kernel.org Signed-off-by: SeongJae Park <sj@kernel.org> Cc: Shuah Khan <shuah@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2025-07-14selftests/damon: add python and drgn-based DAMON sysfs testSeongJae Park2-0/+43
Add a python-written DAMON sysfs functionality selftest. It sets DAMON parameters using Python module _damon_sysfs, reads updated kernel internal DAMON status and parameters using a 'drgn' script, namely drgn_dump_damon_status.py, and compare if the resulted DAMON internal status is as expected. The test is very minimum at the moment. Link: https://lkml.kernel.org/r/20250628160428.53115-4-sj@kernel.org Signed-off-by: SeongJae Park <sj@kernel.org> Cc: Shuah Khan <shuah@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2025-07-14selftests/damon/_damon_sysfs: set Kdamond.pid in start()SeongJae Park1-0/+3
_damon_sysfs.py is a Python module for reading and writing DAMON sysfs for testing. It is not reading resulting kdamond pids. Read and update those when starting kdamonds. Link: https://lkml.kernel.org/r/20250628160428.53115-3-sj@kernel.org Signed-off-by: SeongJae Park <sj@kernel.org> Cc: Shuah Khan <shuah@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2025-07-14selftests/damon: add drgn script for extracting damon statusSeongJae Park1-0/+161
Patch series "selftests/damon: add python and drgn based DAMON sysfs functionality tests". DAMON sysfs interface is the bridge between the user space and the kernel space for DAMON parameters. There is no good and simple test to see if the parameters are set as expected. Existing DAMON selftests therefore test end-to-end features. For example, damos_quota_goal.py runs a DAMOS scheme with quota goal set against a test program running an artificial access pattern, and see if the result is as expected. Such tests cover only a few part of DAMON. Adding more tests is also complicated. Finally, the reliability of the test itself on different systems is bad. 'drgn' is a tool that can extract kernel internal data structures like DAMON parameters. Add a test that passes specific DAMON parameters via DAMON sysfs reusing _damon_sysfs.py, extract resulting DAMON parameters via 'drgn', and compare those. Note that this test is not adding exhaustive tests of all DAMON parameters and input combinations but very basic things. Advancing the test infrastructure and adding more tests are future works. This patch (of 6): 'drgn' is a useful tool for extracting kernel internal data structures such as DAMON's parameter and running status. Add a 'drgn' script that extracts such DAMON internal data at runtime, for using it as a tool for seeing if a test input has made expected results in the kernel. The script saves or prints out the DAMON internal data as a json file or string. This is for making use of it not very depends on 'drgn'. If 'drgn' is not available on a test setup and we find alternative tools for doing that, the json-based tests can be updated to use an alternative tool in future. Note that the script is tested with 'drgn v0.0.22'. Link: https://lkml.kernel.org/r/20250628160428.53115-1-sj@kernel.org Link: https://lkml.kernel.org/r/20250628160428.53115-2-sj@kernel.org Signed-off-by: SeongJae Park <sj@kernel.org> Cc: Shuah Khan <shuah@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2025-07-14tools: ynl: default to --process-unknown in installed modeJakub Kicinski1-0/+2
We default to raising an exception when unknown attrs are found to make sure those are noticed during development. When YNL CLI is "installed" and used by sysadmins erroring out is not going to be helpful. It's far more likely the user space is older than the kernel in that case, than that some attr is misdefined or missing. Signed-off-by: Jakub Kicinski <kuba@kernel.org> Reviewed-by: Donald Hunter <donald.hunter@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2025-07-13Merge tag 'x86_urgent_for_v6.16_rc6' of ↵Linus Torvalds1-0/+1
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 fixes from Borislav Petkov: - Update Kirill's email address - Allow hugetlb PMD sharing only on 64-bit as it doesn't make a whole lotta sense on 32-bit - Add fixes for a misconfigured AMD Zen2 client which wasn't even supposed to run Linux * tag 'x86_urgent_for_v6.16_rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: MAINTAINERS: Update Kirill Shutemov's email address for TDX x86/mm: Disable hugetlb page table sharing on 32-bit x86/CPU/AMD: Disable INVLPGB on Zen2 x86/rdrand: Disable RDSEED on AMD Cyan Skillfish
2025-07-13selftests/nolibc: add x32 test configurationThomas Weißschuh2-1/+18
Nolibc supports the x32 ABI on x86. Add a testcase to make sure the support stays functional. QEMU user does not have support for x32, so skip the test there. Signed-off-by: Thomas Weißschuh <linux@weissschuh.net> Acked-by: Willy Tarreau <w@1wt.eu> Link: https://lore.kernel.org/r/20250712-nolibc-x32-v1-2-6d81cb798710@weissschuh.net
2025-07-13tools/nolibc: define time_t in terms of __kernel_old_time_tThomas Weißschuh1-1/+3
Nolibc assumes that the kernel ABI is using a time values that are as large as a long integer. For most ABIs this holds true. But for x32 this is not correct, as it uses 32bit longs but 64bit times. Also the 'struct stat' implementation of nolibc relies on timespec::tv_sec and time_t being the same type. While timespec::tv_sec comes from the kernel and is of type __kernel_old_time_t, time_t is defined within nolibc. Switch to the __kernel_old_time_t to always get the correct type. Signed-off-by: Thomas Weißschuh <linux@weissschuh.net> Link: https://lore.kernel.org/r/20250712-nolibc-x32-v1-1-6d81cb798710@weissschuh.net Acked-by: Willy Tarreau <w@1wt.eu>
2025-07-13tools: ynl: process unknown for enum valuesDonald Hunter1-2/+12
Extend the process_unknown handing to enum values and flags. Tested by removing entries from rt-link.yaml and rt-neigh.yaml: ./tools/net/ynl/pyynl/cli.py --family rt-link --dump getlink \ --process-unknown --output-json | jq '.[0] | ."ifi-flags"' [ "up", "Unknown(6)", "loopback", "Unknown(16)" ] ./tools/net/ynl/pyynl/cli.py --family rt-neigh --dump getneigh \ --process-unknown --output-json | jq '.[] | ."ndm-type"' "unicast" "Unknown(5)" "Unknown(5)" "unicast" "Unknown(5)" "unicast" "broadcast" Signed-off-by: Donald Hunter <donald.hunter@gmail.com> Reviewed-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
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