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2023-09-14memblock tests: Fix compilation errors.Rong Tao3-2/+6
This patch fix the follow errors. commit 61167ad5fecd ("mm: pass nid to reserve_bootmem_region()") pass nid parameter to reserve_bootmem_region(), $ make -C tools/testing/memblock/ ... memblock.c: In function ‘memmap_init_reserved_pages’: memblock.c:2111:25: error: too many arguments to function ‘reserve_bootmem_region’ 2111 | reserve_bootmem_region(start, end, nid); | ^~~~~~~~~~~~~~~~~~~~~~ ../../include/linux/mm.h:32:6: note: declared here 32 | void reserve_bootmem_region(phys_addr_t start, phys_addr_t end); | ^~~~~~~~~~~~~~~~~~~~~~ memblock.c:2122:17: error: too many arguments to function ‘reserve_bootmem_region’ 2122 | reserve_bootmem_region(start, end, nid); | ^~~~~~~~~~~~~~~~~~~~~~ commit dcdfdd40fa82 ("mm: Add support for unaccepted memory") call accept_memory() in memblock.c $ make -C tools/testing/memblock/ ... cc -fsanitize=address -fsanitize=undefined main.o memblock.o \ lib/slab.o mmzone.o slab.o tests/alloc_nid_api.o \ tests/alloc_helpers_api.o tests/alloc_api.o tests/basic_api.o \ tests/common.o tests/alloc_exact_nid_api.o -o main /usr/bin/ld: memblock.o: in function `memblock_alloc_range_nid': memblock.c:(.text+0x7ae4): undefined reference to `accept_memory' Signed-off-by: Rong Tao <rongtao@cestc.cn> Fixes: dcdfdd40fa82 ("mm: Add support for unaccepted memory") Fixes: 61167ad5fecd ("mm: pass nid to reserve_bootmem_region()") Link: https://lore.kernel.org/r/tencent_6F19BC082167F15DF2A8D8BEFE8EF220F60A@qq.com Signed-off-by: Mike Rapoport (IBM) <rppt@kernel.org>
2023-09-13selftests: netfilter: Test nf_tables audit loggingPhil Sutter5-2/+277
Compare NETFILTER_CFG type audit logs emitted from kernel upon ruleset modifications against expected output. Signed-off-by: Phil Sutter <phil@nwl.cc> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2023-09-13selftests/bpf: Fix kprobe_multi_test/attach_override testJiri Olsa2-9/+3
We need to deny the attach_override test for arm64, denying the whole kprobe_multi_test suite. Also making attach_override static. Fixes: 7182e56411b9 ("selftests/bpf: Add kprobe_multi override test") Signed-off-by: Jiri Olsa <jolsa@kernel.org> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Link: https://lore.kernel.org/bpf/20230913114711.499829-1-jolsa@kernel.org
2023-09-13Merge tag 'trace-v6.6-rc1' of ↵Linus Torvalds2-2/+2
git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace Pull tracing fixes from Steven Rostedt: - Add missing LOCKDOWN checks for eventfs callers When LOCKDOWN is active for tracing, it causes inconsistent state when some functions succeed and others fail. - Use dput() to free the top level eventfs descriptor There was a race between accesses and freeing it. - Fix a long standing bug that eventfs exposed due to changing timings by dynamically creating files. That is, If a event file is opened for an instance, there's nothing preventing the instance from being removed which will make accessing the files cause use-after-free bugs. - Fix a ring buffer race that happens when iterating over the ring buffer while writers are active. Check to make sure not to read the event meta data if it's beyond the end of the ring buffer sub buffer. - Fix the print trigger that disappeared because the test to create it was looking for the event dir field being filled, but now it has the "ef" field filled for the eventfs structure. - Remove the unused "dir" field from the event structure. - Fix the order of the trace_dynamic_info as it had it backwards for the offset and len fields for which one was for which endianess. - Fix NULL pointer dereference with eventfs_remove_rec() If an allocation fails in one of the eventfs_add_*() functions, the caller of it in event_subsystem_dir() or event_create_dir() assigns the result to the structure. But it's assigning the ERR_PTR and not NULL. This was passed to eventfs_remove_rec() which expects either a good pointer or a NULL, not ERR_PTR. The fix is to not assign the ERR_PTR to the structure, but to keep it NULL on error. - Fix list_for_each_rcu() to use list_for_each_srcu() in dcache_dir_open_wrapper(). One iteration of the code used RCU but because it had to call sleepable code, it had to be changed to use SRCU, but one of the iterations was missed. - Fix synthetic event print function to use "as_u64" instead of passing in a pointer to the union. To fix big/little endian issues, the u64 that represented several types was turned into a union to define the types properly. * tag 'trace-v6.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace: eventfs: Fix the NULL pointer dereference bug in eventfs_remove_rec() tracefs/eventfs: Use list_for_each_srcu() in dcache_dir_open_wrapper() tracing/synthetic: Print out u64 values properly tracing/synthetic: Fix order of struct trace_dynamic_info selftests/ftrace: Fix dependencies for some of the synthetic event tests tracing: Remove unused trace_event_file dir field tracing: Use the new eventfs descriptor for print trigger ring-buffer: Do not attempt to read past "commit" tracefs/eventfs: Free top level files on removal ring-buffer: Avoid softlockup in ring_buffer_resize() tracing: Have event inject files inc the trace array ref count tracing: Have option files inc the trace array ref count tracing: Have current_trace inc the trace array ref count tracing: Have tracing_max_latency inc the trace array ref count tracing: Increase trace array ref count on enable and filter files tracefs/eventfs: Use dput to free the toplevel events directory tracefs/eventfs: Add missing lockdown checks tracefs: Add missing lockdown check to tracefs_create_dir()
2023-09-13tools headers UAPI: Update tools's copy of drm.h headersArnaldo Carvalho de Melo1-15/+69
Picking the changes from: ad9ee11fdf113f96 ("drm/doc: document that PRIME import/export is always supported") 2ff4f6d410afa762 ("drm/doc: document drm_event and its types") 9a2eabf48ade4fba ("drm/doc: use proper cross-references for sections") c7a4722971691562 ("drm/syncobj: add IOCTL to register an eventfd") Addressing these perf build warnings: Warning: Kernel ABI header differences: diff -u tools/include/uapi/drm/drm.h include/uapi/drm/drm.h Now 'perf trace' and other code that might use the tools/perf/trace/beauty autogenerated tables will be able to translate this new ioctl code into a string: $ tools/perf/trace/beauty/drm_ioctl.sh > before $ cp include/uapi/drm/drm.h tools/include/uapi/drm/drm.h $ tools/perf/trace/beauty/drm_ioctl.sh > after $ diff -u before after --- before 2023-09-13 08:54:45.170134002 -0300 +++ after 2023-09-13 08:55:06.612712776 -0300 @@ -108,6 +108,7 @@ [0xCC] = "SYNCOBJ_TRANSFER", [0xCD] = "SYNCOBJ_TIMELINE_SIGNAL", [0xCE] = "MODE_GETFB2", + [0xCF] = "SYNCOBJ_EVENTFD", [DRM_COMMAND_BASE + 0x00] = "I915_INIT", [DRM_COMMAND_BASE + 0x01] = "I915_FLUSH", [DRM_COMMAND_BASE + 0x02] = "I915_FLIP", $ Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Simon Ser <contact@emersion.fr> Link: https://lore.kernel.org/lkml/ZQGkh9qlhpKA%2FSMY@kernel.org/ Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2023-09-13tools arch x86: Sync the msr-index.h copy with the kernel sourcesArnaldo Carvalho de Melo1-0/+12
To pick up the changes from these csets: 1b5277c0ea0b2473 ("x86/srso: Add SRSO_NO support") 8974eb588283b7d4 ("x86/speculation: Add Gather Data Sampling mitigation") That cause no changes to tooling: $ tools/perf/trace/beauty/tracepoints/x86_msr.sh > before $ cp arch/x86/include/asm/msr-index.h tools/arch/x86/include/asm/msr-index.h $ tools/perf/trace/beauty/tracepoints/x86_msr.sh > after $ diff -u before after $ Just silences this perf build warning: Warning: Kernel ABI header differences: diff -u tools/arch/x86/include/asm/msr-index.h arch/x86/include/asm/msr-index.h Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Borislav Petkov (AMD) <bp@alien8.de> Cc: Daniel Sneddon <daniel.sneddon@linux.intel.com> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Link: https://lore.kernel.org/lkml/ZQGismCqcDddjEIQ@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2023-09-13perf bench sched-seccomp-notify: Use the tools copy of seccomp.h UAPIArnaldo Carvalho de Melo1-1/+1
To keep perf building in systems where types and defines used in this new benchmark are not available, such as: 12 13.46 centos:stream : FAIL gcc version 8.5.0 20210514 (Red Hat 8.5.0-20) (GCC) bench/sched-seccomp-notify.c: In function 'user_notif_syscall': bench/sched-seccomp-notify.c:55:27: error: 'SECCOMP_RET_USER_NOTIF' undeclared (first use in this function); did you mean 'SECCOMP_RET_ERRNO'? BPF_STMT(BPF_RET|BPF_K, SECCOMP_RET_USER_NOTIF), ^~~~~~~~~~~~~~~~~~~~~~ /git/perf-6.6.0-rc1/tools/include/uapi/linux/filter.h:49:59: note: in definition of macro 'BPF_STMT' #define BPF_STMT(code, k) { (unsigned short)(code), 0, 0, k } ^ bench/sched-seccomp-notify.c:55:27: note: each undeclared identifier is reported only once for each function it appears in BPF_STMT(BPF_RET|BPF_K, SECCOMP_RET_USER_NOTIF), ^~~~~~~~~~~~~~~~~~~~~~ /git/perf-6.6.0-rc1/tools/include/uapi/linux/filter.h:49:59: note: in definition of macro 'BPF_STMT' #define BPF_STMT(code, k) { (unsigned short)(code), 0, 0, k } ^ bench/sched-seccomp-notify.c:55:3: error: missing initializer for field 'k' of 'struct sock_filter' [-Werror=missing-field-initializers] BPF_STMT(BPF_RET|BPF_K, SECCOMP_RET_USER_NOTIF), ^~~~~~~~ In file included from bench/sched-seccomp-notify.c:5: /git/perf-6.6.0-rc1/tools/include/uapi/linux/filter.h:28:8: note: 'k' declared here __u32 k; /* Generic multiuse field */ ^ bench/sched-seccomp-notify.c: In function 'user_notification_sync_loop': bench/sched-seccomp-notify.c:70:28: error: storage size of 'resp' isn't known struct seccomp_notif_resp resp; ^~~~ bench/sched-seccomp-notify.c:71:23: error: storage size of 'req' isn't known struct seccomp_notif req; ^~~ bench/sched-seccomp-notify.c:76:23: error: 'SECCOMP_IOCTL_NOTIF_RECV' undeclared (first use in this function); did you mean 'SECCOMP_MODE_STRICT'? if (ioctl(listener, SECCOMP_IOCTL_NOTIF_RECV, &req)) ^~~~~~~~~~~~~~~~~~~~~~~~ SECCOMP_MODE_STRICT bench/sched-seccomp-notify.c:86:23: error: 'SECCOMP_IOCTL_NOTIF_SEND' undeclared (first use in this function); did you mean 'SECCOMP_RET_ACTION'? if (ioctl(listener, SECCOMP_IOCTL_NOTIF_SEND, &resp)) ^~~~~~~~~~~~~~~~~~~~~~~~ SECCOMP_RET_ACTION bench/sched-seccomp-notify.c:71:23: error: unused variable 'req' [-Werror=unused-variable] struct seccomp_notif req; ^~~ bench/sched-seccomp-notify.c:70:28: error: unused variable 'resp' [-Werror=unused-variable] struct seccomp_notif_resp resp; ^~~~ 14 11.31 debian:10 : FAIL gcc version 8.3.0 (Debian 8.3.0-6) Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Andrei Vagin <avagin@google.com> Cc: Ian Rogers <irogers@google.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kees Kook <keescook@chromium.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: https://lore.kernel.org/lkml/ZQGhjaojgOGtSNk6@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2023-09-13tools headers UAPI: Copy seccomp.h to be able to build 'perf bench' in older ↵Arnaldo Carvalho de Melo2-0/+158
systems The new 'perf bench' for sched-seccomp-notify uses defines and types not available in older systems where we want to have perf available, so grab a copy of this UAPI from the kernel sources to allow that. This will be checked in the future for drift from the original when we build the perf tool, that will warn when that happens like: make: Entering directory '/var/home/acme/git/perf-tools/tools/perf' BUILD: Doing 'make -j32' parallel build Warning: Kernel ABI header differences: Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Andrei Vagin <avagin@google.com> Cc: Ian Rogers <irogers@google.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kees Kook <keescook@chromium.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: https://lore.kernel.org/lkml/ZQGhMXtwX7RvV3ya@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2023-09-13tools headers UAPI: Sync files changed by new fchmodat2 and map_shadow_stack ↵Arnaldo Carvalho de Melo5-1/+9
syscalls with the kernel sources To pick the changes in these csets: c35559f94ebc3e3b ("x86/shstk: Introduce map_shadow_stack syscall") 78252deb023cf087 ("arch: Register fchmodat2, usually as syscall 452") That add support for this new syscall in tools such as 'perf trace'. For instance, this is now possible: # perf trace -v -e fchmodat*,map_shadow_stack --max-events=4 Using CPUID AuthenticAMD-25-21-0 Reusing "openat" BPF sys_enter augmenter for "fchmodat" event qualifier tracepoint filter: (common_pid != 3499340 && common_pid != 11259) && (id == 268 || id == 452 || id == 453) ^C# And it'll work as with other syscalls, for instance openat: # perf trace -e openat* --max-events=4 0.000 ( 0.015 ms): systemd-oomd/1150 openat(dfd: CWD, filename: "/proc/meminfo", flags: RDONLY|CLOEXEC) = 11 0.068 ( 0.019 ms): systemd-oomd/1150 openat(dfd: CWD, filename: "/sys/fs/cgroup/user.slice/user-1001.slice/user@1001.service/memory.pressure", flags: RDONLY|CLOEXEC) = 11 0.119 ( 0.008 ms): systemd-oomd/1150 openat(dfd: CWD, filename: "/sys/fs/cgroup/user.slice/user-1001.slice/user@1001.service/memory.current", flags: RDONLY|CLOEXEC) = 11 0.138 ( 0.006 ms): systemd-oomd/1150 openat(dfd: CWD, filename: "/sys/fs/cgroup/user.slice/user-1001.slice/user@1001.service/memory.min", flags: RDONLY|CLOEXEC) = 11 # That is the filter expression attached to the raw_syscalls:sys_{enter,exit} tracepoints. $ find tools/perf/arch/ -name "syscall*tbl" | xargs grep -E fchmodat\|sys_map_shadow_stack tools/perf/arch/mips/entry/syscalls/syscall_n64.tbl:258 n64 fchmodat sys_fchmodat tools/perf/arch/mips/entry/syscalls/syscall_n64.tbl:452 n64 fchmodat2 sys_fchmodat2 tools/perf/arch/powerpc/entry/syscalls/syscall.tbl:297 common fchmodat sys_fchmodat tools/perf/arch/powerpc/entry/syscalls/syscall.tbl:452 common fchmodat2 sys_fchmodat2 tools/perf/arch/s390/entry/syscalls/syscall.tbl:299 common fchmodat sys_fchmodat sys_fchmodat tools/perf/arch/s390/entry/syscalls/syscall.tbl:452 common fchmodat2 sys_fchmodat2 sys_fchmodat2 tools/perf/arch/x86/entry/syscalls/syscall_64.tbl:268 common fchmodat sys_fchmodat tools/perf/arch/x86/entry/syscalls/syscall_64.tbl:452 common fchmodat2 sys_fchmodat2 tools/perf/arch/x86/entry/syscalls/syscall_64.tbl:453 64 map_shadow_stack sys_map_shadow_stack $ $ grep -Ew map_shadow_stack\|fchmodat2 /tmp/build/perf-tools/arch/x86/include/generated/asm/syscalls_64.c [452] = "fchmodat2", [453] = "map_shadow_stack", $ This addresses these perf 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/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 Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Christian Brauner <brauner@kernel.org> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Palmer Dabbelt <palmer@sifive.com> Cc: Rick Edgecombe <rick.p.edgecombe@intel.com> Link: https://lore.kernel.org/lkml/ZP8bE7aXDBu%2Fdrak@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2023-09-13selftest: tcp: Add v4-mapped-v6 cases in bind_wildcard.c.Kuniyuki Iwashima1-0/+46
We add these 8 test cases in bind_wildcard.c to check bind() conflicts. 1st bind() 2nd bind() --------- --------- 0.0.0.0 ::FFFF:0.0.0.0 ::FFFF:0.0.0.0 0.0.0.0 0.0.0.0 ::FFFF:127.0.0.1 ::FFFF:127.0.0.1 0.0.0.0 127.0.0.1 ::FFFF:0.0.0.0 ::FFFF:0.0.0.0 127.0.0.1 127.0.0.1 ::FFFF:127.0.0.1 ::FFFF:127.0.0.1 127.0.0.1 All test passed without bhash2 and with bhash2 and this series. Before bhash2: $ uname -r 6.0.0-rc1-00393-g0bf73255d3a3 $ ./bind_wildcard ... # PASSED: 16 / 16 tests passed. Just after bhash2: $ uname -r 6.0.0-rc1-00394-g28044fc1d495 $ ./bind_wildcard ... ok 15 bind_wildcard.v4_local_v6_v4mapped_local.v4_v6 not ok 16 bind_wildcard.v4_local_v6_v4mapped_local.v6_v4 # FAILED: 15 / 16 tests passed. On net.git: $ ./bind_wildcard ... not ok 14 bind_wildcard.v4_local_v6_v4mapped_any.v6_v4 not ok 16 bind_wildcard.v4_local_v6_v4mapped_local.v6_v4 # FAILED: 13 / 16 tests passed. With this series: $ ./bind_wildcard ... # PASSED: 16 / 16 tests passed. Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2023-09-13selftest: tcp: Move expected_errno into each test case in bind_wildcard.c.Kuniyuki Iwashima1-10/+10
This is a preparation patch for the following patch. Let's define expected_errno in each test case so that we can add other test cases easily. Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2023-09-13selftest: tcp: Fix address length in bind_wildcard.c.Kuniyuki Iwashima1-1/+1
The selftest passes the IPv6 address length for an IPv4 address. We should pass the correct length. Note inet_bind_sk() does not check if the size is larger than sizeof(struct sockaddr_in), so there is no real bug in this selftest. Fixes: 13715acf8ab5 ("selftest: Add test for bind() conflicts.") Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2023-09-12selftests/bpf: fix unpriv_disabled check in test_verifierArtem Savkov1-1/+1
Commit 1d56ade032a49 changed the function get_unpriv_disabled() to return its results as a bool instead of updating a global variable, but test_verifier was not updated to keep in line with these changes. Thus unpriv_disabled is always false in test_verifier and unprivileged tests are not properly skipped on systems with unprivileged bpf disabled. Fixes: 1d56ade032a49 ("selftests/bpf: Unprivileged tests for test_loader.c") Signed-off-by: Artem Savkov <asavkov@redhat.com> Acked-by: Eduard Zingerman <eddyz87@gmail.com> Link: https://lore.kernel.org/r/20230912120631.213139-1-asavkov@redhat.com Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2023-09-12Merge tag 'linux-kselftest-next-6.6-rc2' of ↵Linus Torvalds4-16/+70
git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest Pull kselftest fixes from Shuah Khan: - kselftest runner script to propagate SIGTERM to runner child to avoid kselftest hang - install symlinks required for test execution to avoid test failures - kselftest dependency checker script argument parsing * tag 'linux-kselftest-next-6.6-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest: selftests: Keep symlinks, when possible selftests: fix dependency checker script kselftest/runner.sh: Propagate SIGTERM to runner child selftests/ftrace: Correctly enable event in instance-event.tc
2023-09-12selftests: tracing: Fix to unmount tracefs for recovering environmentMasami Hiramatsu (Google)1-0/+8
Fix to unmount the tracefs if the ftracetest mounted it for recovering system environment. If the tracefs is already mounted, this does nothing. Suggested-by: Mark Brown <broonie@kernel.org> Link: https://lore.kernel.org/all/29fce076-746c-4650-8358-b4e0fa215cf7@sirena.org.uk/ Fixes: cbd965bde74c ("ftrace/selftests: Return the skip code when tracing directory not configured in kernel") Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org> Reviewed-by: Steven Rostedt (Google) <rostedt@goodmis.org> Reviewed-by: Mark Brown <broonie@kernel.org> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
2023-09-12selftests/bpf: ensure all CI arches set CONFIG_BPF_KPROBE_OVERRIDE=yAndrii Nakryiko2-1/+1
Turns out CONFIG_BPF_KPROBE_OVERRIDE=y is only enabled in x86-64 CI, but is not set on aarch64, causing CI failures ([0]). Move CONFIG_BPF_KPROBE_OVERRIDE=y to arch-agnostic CI config. [0] https://github.com/kernel-patches/bpf/actions/runs/6122324047/job/16618390535 Fixes: 7182e56411b9 ("selftests/bpf: Add kprobe_multi override test") Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Link: https://lore.kernel.org/r/20230912055928.1704269-1-andrii@kernel.org Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2023-09-12rtla/timerlat_aa: Fix previous IRQ delay for IRQs that happens after thread ↵Daniel Bristot de Oliveira1-5/+8
sample timerlat auto-analysis takes note of all IRQs, before or after the execution of the timerlat thread. Because we cannot go backward in the trace (we will fix it when moving to trace-cmd lib?), timerlat aa take note of the last IRQ execution in the waiting for the IRQ state, and then print it if it is executed after the expected timer IRQ starting time. After the thread sample, the timerlat starts recording the next IRQs as "previous" irq for the next occurrence. However, if an IRQ happens after the thread measurement but before the tracing stops, it is classified as a previous IRQ. That is not wrong, as it can be "previous" for the subsequent activation. What is wrong is considering it as a potential source for the last activation. Ignore the IRQ interference that happens after the IRQ starting time for now. A future improvement for timerlat can be either keeping a list of previous IRQ execution or using the trace-cmd library. Still, it requires further investigation - it is a new feature. Link: https://lore.kernel.org/lkml/a44a3f5c801dcc697bacf7325b65d4a5b0460537.1691162043.git.bristot@kernel.org Fixes: 27e348b221f6 ("rtla/timerlat: Add auto-analysis core") Signed-off-by: Daniel Bristot de Oliveira <bristot@kernel.org>
2023-09-12rtla/timerlat_aa: Fix negative IRQ delayDaniel Bristot de Oliveira1-1/+17
When estimating the IRQ timer delay, we are dealing with two different clock sources: the external clock source that timerlat uses as a reference and the clock used by the tracer. There are also two moments: the time reading the clock and the timer in which the event is placed in the buffer (the trace event timestamp). If the processor is slow or there is some hardware noise, the difference between the timestamp and the external clock, read can be longer than the IRQ handler delay, resulting in a negative time. If so, set IRQ to start delay as 0. In the end, it is less near-zero and relevant then the noise. Link: https://lore.kernel.org/lkml/a066fb667c7136d86dcddb3c7ccd72587db3e7c7.1691162043.git.bristot@kernel.org Fixes: 27e348b221f6 ("rtla/timerlat: Add auto-analysis core") Signed-off-by: Daniel Bristot de Oliveira <bristot@kernel.org>
2023-09-12rtla/timerlat_aa: Zero thread sum after every sample analysisDaniel Bristot de Oliveira1-0/+1
The thread thread_thread_sum accounts for thread interference during a single activation. It was not being zeroed, so it was accumulating thread interference over all activations. It was not that visible when timerlat was the highest priority. Link: https://lore.kernel.org/lkml/97bff55b0141f2d01b47d9450a5672fde147b89a.1691162043.git.bristot@kernel.org Fixes: 27e348b221f6 ("rtla/timerlat: Add auto-analysis core") Signed-off-by: Daniel Bristot de Oliveira <bristot@kernel.org>
2023-09-11selftests/bpf: Offloaded prog after non-offloaded should not cause BUGEduard Zingerman1-0/+61
Check what happens if non-offloaded dev bound BPF program is followed by offloaded dev bound program. Test case adapated from syzbot report [1]. [1] https://lore.kernel.org/bpf/000000000000d97f3c060479c4f8@google.com/ Signed-off-by: Eduard Zingerman <eddyz87@gmail.com> Link: https://lore.kernel.org/r/20230912005539.2248244-3-eddyz87@gmail.com Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org>
2023-09-12objtool: Fix _THIS_IP_ detection for cold functionsJosh Poimboeuf1-1/+2
Cold functions and their non-cold counterparts can use _THIS_IP_ to reference each other. Don't warn about !ENDBR in that case. Note that for GCC this is currently irrelevant in light of the following commit c27cd083cfb9 ("Compiler attributes: GCC cold function alignment workarounds") which disabled cold functions in the kernel. However this may still be possible with Clang. Fixes several warnings like the following: drivers/scsi/bnx2i/bnx2i.prelink.o: warning: objtool: bnx2i_hw_ep_disconnect+0x19d: relocation to !ENDBR: bnx2i_hw_ep_disconnect.cold+0x0 drivers/net/ipvlan/ipvlan.prelink.o: warning: objtool: ipvlan_addr4_event.cold+0x28: relocation to !ENDBR: ipvlan_addr4_event+0xda drivers/net/ipvlan/ipvlan.prelink.o: warning: objtool: ipvlan_addr6_event.cold+0x26: relocation to !ENDBR: ipvlan_addr6_event+0xb7 drivers/net/ethernet/broadcom/tg3.prelink.o: warning: objtool: tg3_set_ringparam.cold+0x17: relocation to !ENDBR: tg3_set_ringparam+0x115 drivers/net/ethernet/broadcom/tg3.prelink.o: warning: objtool: tg3_self_test.cold+0x17: relocation to !ENDBR: tg3_self_test+0x2e1 drivers/target/iscsi/cxgbit/cxgbit.prelink.o: warning: objtool: __cxgbit_free_conn.cold+0x24: relocation to !ENDBR: __cxgbit_free_conn+0xfb net/can/can.prelink.o: warning: objtool: can_rx_unregister.cold+0x2c: relocation to !ENDBR: can_rx_unregister+0x11b drivers/net/ethernet/qlogic/qed/qed.prelink.o: warning: objtool: qed_spq_post+0xc0: relocation to !ENDBR: qed_spq_post.cold+0x9a drivers/net/ethernet/qlogic/qed/qed.prelink.o: warning: objtool: qed_iwarp_ll2_comp_syn_pkt.cold+0x12f: relocation to !ENDBR: qed_iwarp_ll2_comp_syn_pkt+0x34b net/tipc/tipc.prelink.o: warning: objtool: tipc_nametbl_publish.cold+0x21: relocation to !ENDBR: tipc_nametbl_publish+0xa6 Signed-off-by: Josh Poimboeuf <jpoimboe@kernel.org> Signed-off-by: Ingo Molnar <mingo@kernel.org> Link: https://lore.kernel.org/r/d8f1ab6a23a6105bc023c132b105f245c7976be6.1694476559.git.jpoimboe@kernel.org
2023-09-11selftests: user_events: create test-specific Kconfig fragmentsNaresh Kamboju1-0/+1
Create the config file in user_events directory of testcase which need more kernel configuration than the default defconfig. User could use these configs with merge_config.sh script: The Kconfig CONFIG_USER_EVENTS=y is needed for the test to read data from the following files, - "/sys/kernel/tracing/user_events_data" - "/sys/kernel/tracing/user_events_status" - "/sys/kernel/tracing/events/user_events/*" Enable config for specific testcase: (export ARCH=xxx #for cross compiling) ./scripts/kconfig/merge_config.sh .config \ tools/testing/selftests/user_events/config Enable configs for all testcases: (export ARCH=xxx #for cross compiling) ./scripts/kconfig/merge_config.sh .config \ tools/testing/selftests/*/config Cc: Beau Belgrave <beaub@linux.microsoft.com> Cc: Shuah Khan <skhan@linuxfoundation.org> Cc: linux-kselftest@vger.kernel.org Signed-off-by: Naresh Kamboju <naresh.kamboju@linaro.org> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
2023-09-11ftrace/selftests: Add softlink to latest log directorySteven Rostedt (Google)1-1/+9
When I'm debugging something with the ftrace selftests and need to look at the logs, it becomes tedious that I need to do the following: ls -ltr logs [ copy the last directory ] ls logs/<paste-last-dir> to see where the logs are. Instead, do the common practice of having a "latest" softlink to the last run selftest. This way after running the selftest I only need to do: ls logs/latest/ and it will always give me the directory of the last run selftest logs! Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org> Acked-by: Masami Hiramatsu (Google) <mhiramat@kernel.org> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
2023-09-11selftests/user_events: Fix failures when user_events is not installedBeau Belgrave5-0/+111
When user_events is not installed the self tests currently fail. Now that these self tests run by default we need to ensure they don't fail when user_events was not enabled for the kernel being tested. Add common methods to detect if tracefs and user_events is enabled. If either is not enabled skip the test. If tracefs is enabled, but is not mounted, mount tracefs and fail if there were any errors. Fail if not run as root. Fixes: 68b4d2d58389 ("selftests/user_events: Reenable build") Reported-by: Naresh Kamboju <naresh.kamboju@linaro.org> Link: https://lore.kernel.org/all/CA+G9fYuugZ0OMeS6HvpSS4nuf_A3s455ecipGBvER0LJHojKZg@mail.gmail.com/ Signed-off-by: Beau Belgrave <beaub@linux.microsoft.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
2023-09-11selftests/bpf: Update bpf_clone_redirect expected return codeStanislav Fomichev1-2/+10
Commit 151e887d8ff9 ("veth: Fixing transmit return status for dropped packets") started propagating proper NET_XMIT_DROP error to the caller which means it's now possible to get positive error code when calling bpf_clone_redirect() in this particular test. Update the test to reflect that. Reported-by: Daniel Borkmann <daniel@iogearbox.net> Signed-off-by: Stanislav Fomichev <sdf@google.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Link: https://lore.kernel.org/bpf/20230911194731.286342-2-sdf@google.com
2023-09-11bpf: Clarify error expectations from bpf_clone_redirectStanislav Fomichev1-1/+3
Commit 151e887d8ff9 ("veth: Fixing transmit return status for dropped packets") exposed the fact that bpf_clone_redirect is capable of returning raw NET_XMIT_XXX return codes. This is in the conflict with its UAPI doc which says the following: "0 on success, or a negative error in case of failure." Update the UAPI to reflect the fact that bpf_clone_redirect can return positive error numbers, but don't explicitly define their meaning. Reported-by: Daniel Borkmann <daniel@iogearbox.net> Signed-off-by: Stanislav Fomichev <sdf@google.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Link: https://lore.kernel.org/bpf/20230911194731.286342-1-sdf@google.com
2023-09-11selftests/bpf: Test all valid alloc sizes for bpf mem allocatorHou Tao2-0/+173
Add a test to test all possible and valid allocation size for bpf memory allocator. For each possible allocation size, the test uses the following two steps to test the alloc and free path: 1) allocate N (N > high_watermark) objects to trigger the refill executed in irq_work. 2) free N objects to trigger the freeing executed in irq_work. Signed-off-by: Hou Tao <houtao1@huawei.com> Link: https://lore.kernel.org/r/20230908133923.2675053-5-houtao@huaweicloud.com Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2023-09-11perf tools: Update copy of libbpf's hashmap.cArnaldo Carvalho de Melo1-10/+0
To pick the changes in: a3e7e6b17946f48b ("libbpf: Remove HASHMAP_INIT static initialization helper") That don't entail any changes in tools/perf. This addresses this perf build warning: Warning: Kernel ABI header differences: diff -u tools/perf/util/hashmap.h tools/lib/bpf/hashmap.h Not a kernel ABI, its just that this uses the mechanism in place for checking kernel ABI files drift. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2023-09-11selftests: ALSA: remove unused variablesDing Xiang4-12/+5
These variables are never referenced in the code, just remove them. Signed-off-by: Ding Xiang <dingxiang@cmss.chinamobile.com> Reviewed-by: Mark Brown <broonie@kernel.org> Link: https://lore.kernel.org/r/20230908081040.197243-1-dingxiang@cmss.chinamobile.com Signed-off-by: Takashi Iwai <tiwai@suse.de>
2023-09-10selftests/net: Improve bind_bhash.sh to accommodate predictable network ↵Juntong Deng1-12/+14
interface names Starting with v197, systemd uses predictable interface network names, the traditional interface naming scheme (eth0) is deprecated, therefore it cannot be assumed that the eth0 interface exists on the host. This modification makes the bind_bhash test program run in a separate network namespace and no longer needs to consider the name of the network interface on the host. Signed-off-by: Juntong Deng <juntong.deng@outlook.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2023-09-09Merge tag 'perf-tools-for-v6.6-1-2023-09-05' of ↵Linus Torvalds282-9119/+8004
git://git.kernel.org/pub/scm/linux/kernel/git/perf/perf-tools Pull perf tools updates from Arnaldo Carvalho de Melo: "perf tools maintainership: - Add git information for perf-tools and perf-tools-next trees and branches to the MAINTAINERS file. That is where development now takes place and myself and Namhyung Kim have write access, more people to come as we emulate other maintainer groups. perf record: - Record kernel data maps when 'perf record --data' is used, so that global variables can be resolved and used in tools that do data profiling. perf trace: - Remove the old, experimental support for BPF events in which a .c file was passed as an event: "perf trace -e hello.c" to then get compiled and loaded. The only known usage for that, that shipped with the kernel as an example for such events, augmented the raw_syscalls tracepoints and was converted to a libbpf skeleton, reusing all the user space components and the BPF code connected to the syscalls. In the end just the way to glue the BPF part and the user space type beautifiers changed, now being performed by libbpf skeletons. The next step is to use BTF to do pretty printing of all syscall types, as discussed with Alan Maguire and others. Now, on a perf built with BUILD_BPF_SKEL=1 we get most if not all path/filenames/strings, some of the networking data structures, perf_event_attr, etc, i.e. systemwide tracing of nanosleep calls and perf_event_open syscalls while 'perf stat' runs 'sleep' for 5 seconds: # perf trace -a -e *nanosleep,perf* perf stat -e cycles,instructions sleep 5 0.000 ( 9.034 ms): perf/327641 perf_event_open(attr_uptr: { type: 0 (PERF_TYPE_HARDWARE), size: 136, config: 0 (PERF_COUNT_HW_CPU_CYCLES), sample_type: IDENTIFIER, read_format: TOTAL_TIME_ENABLED|TOTAL_TIME_RUNNING, disabled: 1, inherit: 1, enable_on_exec: 1, exclude_guest: 1 }, pid: 327642 (perf), cpu: -1, group_fd: -1, flags: FD_CLOEXEC) = 3 9.039 ( 0.006 ms): perf/327641 perf_event_open(attr_uptr: { type: 0 (PERF_TYPE_HARDWARE), size: 136, config: 0x1 (PERF_COUNT_HW_INSTRUCTIONS), sample_type: IDENTIFIER, read_format: TOTAL_TIME_ENABLED|TOTAL_TIME_RUNNING, disabled: 1, inherit: 1, enable_on_exec: 1, exclude_guest: 1 }, pid: 327642 (perf-exec), cpu: -1, group_fd: -1, flags: FD_CLOEXEC) = 4 ? ( ): gpm/991 ... [continued]: clock_nanosleep()) = 0 10.133 ( ): sleep/327642 clock_nanosleep(rqtp: { .tv_sec: 5, .tv_nsec: 0 }, rmtp: 0x7ffd36f83ed0) ... ? ( ): pool-gsd-smart/3051 ... [continued]: clock_nanosleep()) = 0 30.276 ( ): gpm/991 clock_nanosleep(rqtp: { .tv_sec: 2, .tv_nsec: 0 }, rmtp: 0x7ffcc6f73710) ... 223.215 (1000.430 ms): pool-gsd-smart/3051 clock_nanosleep(rqtp: { .tv_sec: 1, .tv_nsec: 0 }, rmtp: 0x7f6e7fffec90) = 0 30.276 (2000.394 ms): gpm/991 ... [continued]: clock_nanosleep()) = 0 1230.814 ( ): pool-gsd-smart/3051 clock_nanosleep(rqtp: { .tv_sec: 1, .tv_nsec: 0 }, rmtp: 0x7f6e7fffec90) ... 1230.814 (1000.404 ms): pool-gsd-smart/3051 ... [continued]: clock_nanosleep()) = 0 2030.886 ( ): gpm/991 clock_nanosleep(rqtp: { .tv_sec: 2, .tv_nsec: 0 }, rmtp: 0x7ffcc6f73710) ... 2237.709 (1000.153 ms): pool-gsd-smart/3051 clock_nanosleep(rqtp: { .tv_sec: 1, .tv_nsec: 0 }, rmtp: 0x7f6e7fffec90) = 0 ? ( ): crond/1172 ... [continued]: clock_nanosleep()) = 0 3242.699 ( ): pool-gsd-smart/3051 clock_nanosleep(rqtp: { .tv_sec: 1, .tv_nsec: 0 }, rmtp: 0x7f6e7fffec90) ... 2030.886 (2000.385 ms): gpm/991 ... [continued]: clock_nanosleep()) = 0 3728.078 ( ): crond/1172 clock_nanosleep(rqtp: { .tv_sec: 60, .tv_nsec: 0 }, rmtp: 0x7ffe0971dcf0) ... 3242.699 (1000.158 ms): pool-gsd-smart/3051 ... [continued]: clock_nanosleep()) = 0 4031.409 ( ): gpm/991 clock_nanosleep(rqtp: { .tv_sec: 2, .tv_nsec: 0 }, rmtp: 0x7ffcc6f73710) ... 10.133 (5000.375 ms): sleep/327642 ... [continued]: clock_nanosleep()) = 0 Performance counter stats for 'sleep 5': 2,617,347 cycles 1,855,997 instructions # 0.71 insn per cycle 5.002282128 seconds time elapsed 0.000855000 seconds user 0.000852000 seconds sys perf annotate: - Building with binutils' libopcode now is opt-in (BUILD_NONDISTRO=1) for licensing reasons, and we missed a build test on tools/perf/tests makefile. Since we now default to NDEBUG=1, we ended up segfaulting when building with BUILD_NONDISTRO=1 because a needed initialization routine was being "error checked" via an assert. Fix it by explicitly checking the result and aborting instead if it fails. We better back propagate the error, but at least 'perf annotate' on samples collected for a BPF program is back working when perf is built with BUILD_NONDISTRO=1. perf report/top: - Add back TUI hierarchy mode header, that is seen when using 'perf report/top --hierarchy'. - Fix the number of entries for 'e' key in the TUI that was preventing navigation of lines when expanding an entry. perf report/script: - Support cross platform register handling, allowing a perf.data file collected on one architecture to have registers sampled correctly displayed when analysis tools such as 'perf report' and 'perf script' are used on a different architecture. - Fix handling of event attributes in pipe mode, i.e. when one uses: perf record -o - | perf report -i - When no perf.data files are used. - Handle files generated via pipe mode with a version of perf and then read also via pipe mode with a different version of perf, where the event attr record may have changed, use the record size field to properly support this version mismatch. perf probe: - Accessing global variables from uprobes isn't supported, make the error message state that instead of stating that some minimal kernel version is needed to have that feature. This seems just a tool limitation, the kernel probably has all that is needed. perf tests: - Fix a reference count related leak in the dlfilter v0 API where the result of a thread__find_symbol_fb() is not matched with an addr_location__exit() to drop the reference counts of the resolved components (machine, thread, map, symbol, etc). Add a dlfilter test to make sure that doesn't regresses. - Lots of fixes for the 'perf test' written in shell script related to problems found with the shellcheck utility. - Fixes for 'perf test' shell scripts testing features enabled when perf is built with BUILD_BPF_SKEL=1, such as 'perf stat' bpf counters. - Add perf record sample filtering test, things like the following example, that gets implemented as a BPF filter attached to the event: # perf record -e task-clock -c 10000 --filter 'ip < 0xffffffff00000000' - Improve the way the task_analyzer test checks if libtraceevent is linked, using 'perf version --build-options' instead of the more expensinve 'perf record -e "sched:sched_switch"'. - Add support for riscv in the mmap-basic test. (This went as well via the RiscV tree, same contents). libperf: - Implement riscv mmap support (This went as well via the RiscV tree, same contents). perf script: - New tool that converts perf.data files to the firefox profiler format so that one can use the visualizer at https://profiler.firefox.com/. Done by Anup Sharma as part of this year's Google Summer of Code. One can generate the output and upload it to the web interface but Anup also automated everything: perf script gecko -F 99 -a sleep 60 - Support syscall name parsing on arm64. - Print "cgroup" field on the same line as "comm". perf bench: - Add new 'uprobe' benchmark to measure the overhead of uprobes with/without BPF programs attached to it. - breakpoints are not available on power9, skip that test. perf stat: - Add #num_cpus_online literal to be used in 'perf stat' metrics, and add this extra 'perf test' check that exemplifies its purpose: TEST_ASSERT_VAL("#num_cpus_online", expr__parse(&num_cpus_online, ctx, "#num_cpus_online") == 0); TEST_ASSERT_VAL("#num_cpus", expr__parse(&num_cpus, ctx, "#num_cpus") == 0); TEST_ASSERT_VAL("#num_cpus >= #num_cpus_online", num_cpus >= num_cpus_online); Miscellaneous: - Improve tool startup time by lazily reading PMU, JSON, sysfs data. - Improve error reporting in the parsing of events, passing YYLTYPE to error routines, so that the output can show were the parsing error was found. - Add 'perf test' entries to check the parsing of events improvements. - Fix various leak for things detected by -fsanitize=address, mostly things that would be freed at tool exit, including: - Free evsel->filter on the destructor. - Allow tools to register a thread->priv destructor and use it in 'perf trace'. - Free evsel->priv in 'perf trace'. - Free string returned by synthesize_perf_probe_point() when the caller fails to do all it needs. - Adjust various compiler options to not consider errors some warnings when building with broken headers found in things like python, flex, bison, as we otherwise build with -Werror. Some for gcc, some for clang, some for some specific version of those, some for some specific version of flex or bison, or some specific combination of these components, bah. - Allow customization of clang options for BPF target, this helps building on gentoo where there are other oddities where BPF targets gets passed some compiler options intended for the native build, so building with WERROR=0 helps while these oddities are fixed. - Dont pass ERR_PTR() values to perf_session__delete() in 'perf top' and 'perf lock', fixing some segfaults when handling some odd failures. - Add LTO build option. - Fix format of unordered lists in the perf docs (tools/perf/Documentation) - Overhaul the bison files, using constructs such as YYNOMEM. - Remove unused tokens from the bison .y files. - Add more comments to various structs. - A few LoongArch enablement patches. Vendor events (JSON): - Add JSON metrics for Yitian 710 DDR (aarch64). Things like: EventName, BriefDescription visible_window_limit_reached_rd, "At least one entry in read queue reaches the visible window limit.", visible_window_limit_reached_wr, "At least one entry in write queue reaches the visible window limit.", op_is_dqsosc_mpc , "A DQS Oscillator MPC command to DRAM.", op_is_dqsosc_mrr , "A DQS Oscillator MRR command to DRAM.", op_is_tcr_mrr , "A Temperature Compensated Refresh(TCR) MRR command to DRAM.", - Add AmpereOne metrics (aarch64). - Update N2 and V2 metrics (aarch64) and events using Arm telemetry repo. - Update scale units and descriptions of common topdown metrics on aarch64. Things like: - "MetricExpr": "stall_slot_frontend / (#slots * cpu_cycles)", - "BriefDescription": "Frontend bound L1 topdown metric", + "MetricExpr": "100 * (stall_slot_frontend / (#slots * cpu_cycles))", + "BriefDescription": "This metric is the percentage of total slots that were stalled due to resource constraints in the frontend of the processor.", - Update events for intel: meteorlake to 1.04, sapphirerapids to 1.15, Icelake+ metric constraints. - Update files for the power10 platform" * tag 'perf-tools-for-v6.6-1-2023-09-05' of git://git.kernel.org/pub/scm/linux/kernel/git/perf/perf-tools: (217 commits) perf parse-events: Fix driver config term perf parse-events: Fixes relating to no_value terms perf parse-events: Fix propagation of term's no_value when cloning perf parse-events: Name the two term enums perf list: Don't print Unit for "default_core" perf vendor events intel: Fix modifier in tma_info_system_mem_parallel_reads for skylake perf dlfilter: Avoid leak in v0 API test use of resolve_address() perf metric: Add #num_cpus_online literal perf pmu: Remove str from perf_pmu_alias perf parse-events: Make common term list to strbuf helper perf parse-events: Minor help message improvements perf pmu: Avoid uninitialized use of alias->str perf jevents: Use "default_core" for events with no Unit perf test stat_bpf_counters_cgrp: Enhance perf stat cgroup BPF counter test perf test shell stat_bpf_counters: Fix test on Intel perf test shell record_bpf_filter: Skip 6.2 kernel libperf: Get rid of attr.id field perf tools: Convert to perf_record_header_attr_id() libperf: Add perf_record_header_attr_id() perf tools: Handle old data in PERF_RECORD_ATTR ...
2023-09-08Merge tag 'xarray-6.6' of git://git.infradead.org/users/willy/xarrayLinus Torvalds1-2/+66
Pull xarray fixes from Matthew Wilcox: - Fix a bug encountered by people using bittorrent where they'd get NULL pointer dereferences on page cache lookups when using XFS - Two documentation fixes * tag 'xarray-6.6' of git://git.infradead.org/users/willy/xarray: idr: fix param name in idr_alloc_cyclic() doc xarray: Document necessary flag in alloc functions XArray: Do not return sibling entries from xa_load()
2023-09-08selftests/ftrace: Fix dependencies for some of the synthetic event testsNaveen N Rao2-2/+2
Commit b81a3a100cca1b ("tracing/histogram: Add simple tests for stacktrace usage of synthetic events") changed the output text in tracefs README, but missed updating some of the dependencies specified in selftests. This causes some of the tests to exit as unsupported. Fix this by changing the grep pattern. Since we want these tests to work on older kernels, match only against the common last part of the pattern. Link: https://lore.kernel.org/linux-trace-kernel/20230614091046.2178539-1-naveen@kernel.org Cc: <linux-kselftest@vger.kernel.org> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Shuah Khan <shuah@kernel.org> Fixes: b81a3a100cca ("tracing/histogram: Add simple tests for stacktrace usage of synthetic events") Signed-off-by: Naveen N Rao <naveen@kernel.org> Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
2023-09-08selftests/bpf: Add kprobe_multi override testJiri Olsa2-0/+50
Adding test that tries to attach program with bpf_override_return helper to function not within error injection list. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Link: https://lore.kernel.org/bpf/20230907200652.926951-2-jolsa@kernel.org
2023-09-08Merge tag 'landlock-6.6-rc1' of ↵Linus Torvalds1-3/+5
git://git.kernel.org/pub/scm/linux/kernel/git/mic/linux Pull landlock updates from Mickaël Salaün: "One test fix and a __counted_by annotation" * tag 'landlock-6.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/mic/linux: selftests/landlock: Fix a resource leak landlock: Annotate struct landlock_rule with __counted_by
2023-09-08selftests: Keep symlinks, when possibleBjörn Töpel1-2/+2
When kselftest is built/installed with the 'gen_tar' target, rsync is used for the installation step to copy files. Extra care is needed for tests that have symlinks. Commit ae108c48b5d2 ("selftests: net: Fix cross-tree inclusion of scripts") added '-L' (transform symlink into referent file/dir) to rsync, to fix dangling links. However, that broke some tests where the symlink (being a symlink) is part of the test (e.g. exec:execveat). Use rsync's '--copy-unsafe-links' that does right thing. Fixes: ae108c48b5d2 ("selftests: net: Fix cross-tree inclusion of scripts") Signed-off-by: Björn Töpel <bjorn@rivosinc.com> Reviewed-by: Benjamin Poirier <bpoirier@nvidia.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
2023-09-08selftests: fix dependency checker scriptRicardo B. Marliere1-12/+65
This patch fixes inconsistencies in the parsing rules of the levels 1 and 2 of the kselftest_deps.sh. It was added the levels 4 and 5 to account for a few edge cases that are present in some tests, also some minor identation styling have been fixed (s/ /\t/g). Signed-off-by: Ricardo B. Marliere <rbmarliere@gmail.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
2023-09-08kselftest/runner.sh: Propagate SIGTERM to runner childBjörn Töpel1-1/+2
Timeouts in kselftest are done using the "timeout" command with the "--foreground" option. Without the "foreground" option, it is not possible for a user to cancel the runner using SIGINT, because the signal is not propagated to timeout which is running in a different process group. The "forground" options places the timeout in the same process group as its parent, but only sends the SIGTERM (on timeout) signal to the forked process. Unfortunately, this does not play nice with all kselftests, e.g. "net:fcnal-test.sh", where the child processes will linger because timeout does not send SIGTERM to the group. Some users have noted these hangs [1]. Fix this by nesting the timeout with an additional timeout without the foreground option. Link: https://lore.kernel.org/all/7650b2eb-0aee-a2b0-2e64-c9bc63210f67@alu.unizg.hr/ # [1] Fixes: 651e0d881461 ("kselftest/runner: allow to properly deliver signals to tests") Signed-off-by: Björn Töpel <bjorn@rivosinc.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
2023-09-07Merge tag 'net-6.6-rc1' of ↵Linus Torvalds10-5/+339
git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net Pull networking updates from Jakub Kicinski: "Including fixes from netfilter and bpf. Current release - regressions: - eth: stmmac: fix failure to probe without MAC interface specified Current release - new code bugs: - docs: netlink: fix missing classic_netlink doc reference Previous releases - regressions: - deal with integer overflows in kmalloc_reserve() - use sk_forward_alloc_get() in sk_get_meminfo() - bpf_sk_storage: fix the missing uncharge in sk_omem_alloc - fib: avoid warn splat in flow dissector after packet mangling - skb_segment: call zero copy functions before using skbuff frags - eth: sfc: check for zero length in EF10 RX prefix Previous releases - always broken: - af_unix: fix msg_controllen test in scm_pidfd_recv() for MSG_CMSG_COMPAT - xsk: fix xsk_build_skb() dereferencing possible ERR_PTR() - netfilter: - nft_exthdr: fix non-linear header modification - xt_u32, xt_sctp: validate user space input - nftables: exthdr: fix 4-byte stack OOB write - nfnetlink_osf: avoid OOB read - one more fix for the garbage collection work from last release - igmp: limit igmpv3_newpack() packet size to IP_MAX_MTU - bpf, sockmap: fix preempt_rt splat when using raw_spin_lock_t - handshake: fix null-deref in handshake_nl_done_doit() - ip: ignore dst hint for multipath routes to ensure packets are hashed across the nexthops - phy: micrel: - correct bit assignments for cable test errata - disable EEE according to the KSZ9477 errata Misc: - docs/bpf: document compile-once-run-everywhere (CO-RE) relocations - Revert "net: macsec: preserve ingress frame ordering", it appears to have been developed against an older kernel, problem doesn't exist upstream" * tag 'net-6.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (95 commits) net: enetc: distinguish error from valid pointers in enetc_fixup_clear_rss_rfs() Revert "net: team: do not use dynamic lockdep key" net: hns3: remove GSO partial feature bit net: hns3: fix the port information display when sfp is absent net: hns3: fix invalid mutex between tc qdisc and dcb ets command issue net: hns3: fix debugfs concurrency issue between kfree buffer and read net: hns3: fix byte order conversion issue in hclge_dbg_fd_tcam_read() net: hns3: Support query tx timeout threshold by debugfs net: hns3: fix tx timeout issue net: phy: Provide Module 4 KSZ9477 errata (DS80000754C) netfilter: nf_tables: Unbreak audit log reset netfilter: ipset: add the missing IP_SET_HASH_WITH_NET0 macro for ip_set_hash_netportnet.c netfilter: nft_set_rbtree: skip sync GC for new elements in this transaction netfilter: nf_tables: uapi: Describe NFTA_RULE_CHAIN_ID netfilter: nfnetlink_osf: avoid OOB read netfilter: nftables: exthdr: fix 4-byte stack OOB write selftests/bpf: Check bpf_sk_storage has uncharged sk_omem_alloc bpf: bpf_sk_storage: Fix the missing uncharge in sk_omem_alloc bpf: bpf_sk_storage: Fix invalid wait context lockdep report s390/bpf: Pass through tail call counter in trampolines ...
2023-09-07Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvmLinus Torvalds62-960/+2925
Pull kvm updates from Paolo Bonzini: "ARM: - Clean up vCPU targets, always returning generic v8 as the preferred target - Trap forwarding infrastructure for nested virtualization (used for traps that are taken from an L2 guest and are needed by the L1 hypervisor) - FEAT_TLBIRANGE support to only invalidate specific ranges of addresses when collapsing a table PTE to a block PTE. This avoids that the guest refills the TLBs again for addresses that aren't covered by the table PTE. - Fix vPMU issues related to handling of PMUver. - Don't unnecessary align non-stack allocations in the EL2 VA space - Drop HCR_VIRT_EXCP_MASK, which was never used... - Don't use smp_processor_id() in kvm_arch_vcpu_load(), but the cpu parameter instead - Drop redundant call to kvm_set_pfn_accessed() in user_mem_abort() - Remove prototypes without implementations RISC-V: - Zba, Zbs, Zicntr, Zicsr, Zifencei, and Zihpm support for guest - Added ONE_REG interface for SATP mode - Added ONE_REG interface to enable/disable multiple ISA extensions - Improved error codes returned by ONE_REG interfaces - Added KVM_GET_REG_LIST ioctl() implementation for KVM RISC-V - Added get-reg-list selftest for KVM RISC-V s390: - PV crypto passthrough enablement (Tony, Steffen, Viktor, Janosch) Allows a PV guest to use crypto cards. Card access is governed by the firmware and once a crypto queue is "bound" to a PV VM every other entity (PV or not) looses access until it is not bound anymore. Enablement is done via flags when creating the PV VM. - Guest debug fixes (Ilya) x86: - Clean up KVM's handling of Intel architectural events - Intel bugfixes - Add support for SEV-ES DebugSwap, allowing SEV-ES guests to use debug registers and generate/handle #DBs - Clean up LBR virtualization code - Fix a bug where KVM fails to set the target pCPU during an IRTE update - Fix fatal bugs in SEV-ES intrahost migration - Fix a bug where the recent (architecturally correct) change to reinject #BP and skip INT3 broke SEV guests (can't decode INT3 to skip it) - Retry APIC map recalculation if a vCPU is added/enabled - Overhaul emergency reboot code to bring SVM up to par with VMX, tie the "emergency disabling" behavior to KVM actually being loaded, and move all of the logic within KVM - Fix user triggerable WARNs in SVM where KVM incorrectly assumes the TSC ratio MSR cannot diverge from the default when TSC scaling is disabled up related code - Add a framework to allow "caching" feature flags so that KVM can check if the guest can use a feature without needing to search guest CPUID - Rip out the ancient MMU_DEBUG crud and replace the useful bits with CONFIG_KVM_PROVE_MMU - Fix KVM's handling of !visible guest roots to avoid premature triple fault injection - Overhaul KVM's page-track APIs, and KVMGT's usage, to reduce the API surface that is needed by external users (currently only KVMGT), and fix a variety of issues in the process Generic: - Wrap kvm_{gfn,hva}_range.pte in a union to allow mmu_notifier events to pass action specific data without needing to constantly update the main handlers. - Drop unused function declarations Selftests: - Add testcases to x86's sync_regs_test for detecting KVM TOCTOU bugs - Add support for printf() in guest code and covert all guest asserts to use printf-based reporting - Clean up the PMU event filter test and add new testcases - Include x86 selftests in the KVM x86 MAINTAINERS entry" * tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (279 commits) KVM: x86/mmu: Include mmu.h in spte.h KVM: x86/mmu: Use dummy root, backed by zero page, for !visible guest roots KVM: x86/mmu: Disallow guest from using !visible slots for page tables KVM: x86/mmu: Harden TDP MMU iteration against root w/o shadow page KVM: x86/mmu: Harden new PGD against roots without shadow pages KVM: x86/mmu: Add helper to convert root hpa to shadow page drm/i915/gvt: Drop final dependencies on KVM internal details KVM: x86/mmu: Handle KVM bookkeeping in page-track APIs, not callers KVM: x86/mmu: Drop @slot param from exported/external page-track APIs KVM: x86/mmu: Bug the VM if write-tracking is used but not enabled KVM: x86/mmu: Assert that correct locks are held for page write-tracking KVM: x86/mmu: Rename page-track APIs to reflect the new reality KVM: x86/mmu: Drop infrastructure for multiple page-track modes KVM: x86/mmu: Use page-track notifiers iff there are external users KVM: x86/mmu: Move KVM-only page-track declarations to internal header KVM: x86: Remove the unused page-track hook track_flush_slot() drm/i915/gvt: switch from ->track_flush_slot() to ->track_remove_region() KVM: x86: Add a new page-track hook to handle memslot deletion drm/i915/gvt: Don't bother removing write-protection on to-be-deleted slot KVM: x86: Reject memslot MOVE operations if KVMGT is attached ...
2023-09-06selftests/bpf: Check bpf_sk_storage has uncharged sk_omem_allocMartin KaFai Lau3-0/+118
This patch checks the sk_omem_alloc has been uncharged by bpf_sk_storage during the __sk_destruct. Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Link: https://lore.kernel.org/bpf/20230901231129.578493-4-martin.lau@linux.dev
2023-09-05selftests/ftrace: Correctly enable event in instance-event.tcZheng Yejian1-1/+1
Function instance_set() expects to enable event 'sched_switch', so we should set 1 to its 'enable' file. Testcase passed after this patch: # ./ftracetest test.d/instances/instance-event.tc === Ftrace unit tests === [1] Test creation and deletion of trace instances while setting an event [PASS] # of passed: 1 # of failed: 0 # of unresolved: 0 # of untested: 0 # of unsupported: 0 # of xfailed: 0 # of undefined(test bug): 0 Signed-off-by: Zheng Yejian <zhengyejian1@huawei.com> Acked-by: Masami Hiramatsu (Google) <mhiramat@kernel.org> Acked-by: Steven Rostedt (Google) <rostedt@goodmis.org> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
2023-09-05tools/mm: fix undefined reference to pthread_onceXie XiuQi1-2/+2
Commit 97d5f2e9ee12 ("tools api fs: More thread safety for global filesystem variables") introduces pthread_once, so the libpthread should be added at link time, or we'll meet the following compile error when 'make -C tools/mm': gcc -Wall -Wextra -I../lib/ -o page-types page-types.c ../lib/api/libapi.a ~/linux/tools/lib/api/fs/fs.c:146: undefined reference to `pthread_once' ~/linux/tools/lib/api/fs/fs.c:147: undefined reference to `pthread_once' ~/linux/tools/lib/api/fs/fs.c:148: undefined reference to `pthread_once' ~/linux/tools/lib/api/fs/fs.c:149: undefined reference to `pthread_once' ~/linux/tools/lib/api/fs/fs.c:150: undefined reference to `pthread_once' /usr/bin/ld: ../lib/api/libapi.a(libapi-in.o):~/linux/tools/lib/api/fs/fs.c:151: more undefined references to `pthread_once' follow collect2: error: ld returned 1 exit status make: *** [Makefile:22: page-types] Error 1 Link: https://lkml.kernel.org/r/20230831034205.2376653-1-xiexiuqi@huaweicloud.com Fixes: 97d5f2e9ee12 ("tools api fs: More thread safety for global filesystem variables") Signed-off-by: Xie XiuQi <xiexiuqi@huawei.com> Acked-by: Ian Rogers <irogers@google.com> Cc: Matthew Wilcox <willy@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2023-09-05perf parse-events: Fix driver config termIan Rogers1-0/+17
Inadvertently deleted in commit 30f4ade33d649aa0 ("perf tools: Revert enable indices setting syntax for BPF map"). Fixes: 30f4ade33d649aa0 ("perf tools: Revert enable indices setting syntax for BPF map") Reported-by: James Clark <james.clark@arm.com> Reviewed-by: James Clark <james.clark@arm.com> Signed-off-by: Ian Rogers <irogers@google.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lore.kernel.org/lkml/20230905033805.3094293-1-irogers@google.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2023-09-04Merge tag 'pm-6.6-rc1-2' of ↵Linus Torvalds1-1/+1
git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm Pull more power management updates from Rafael Wysocki: "These fix cpufreq core and the pcc cpufreq driver, add per-policy boost support to cpufreq and add Georgian translation Makefile LANGUAGES in cpupower. Specifics: - Add Georgian translation to Makefile LANGUAGES in cpupower (Shuah Khan). - Add support for per-policy performance boost to cpufreq (Jie Zhan). - Fix assorted issues in the cpufreq core, common governor code and in the pcc cpufreq driver (Liao Chang)" * tag 'pm-6.6-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: cpufreq: Support per-policy performance boost cpufreq: pcc: Fix the potentinal scheduling delays in target_index() cpufreq: governor: Free dbs_data directly when gov->init() fails cpufreq: Fix the race condition while updating the transition_task of policy cpufreq: Avoid printing kernel addresses in cpufreq_resume() cpupower: Add Georgian translation to Makefile LANGUAGES
2023-09-02Merge tag 'probes-v6.6' of ↵Linus Torvalds2-1/+29
git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace Pull probes updates from Masami Hiramatsu: - kprobes: use struct_size() for variable size kretprobe_instance data structure. - eprobe: Simplify trace_eprobe list iteration. - probe events: Data structure field access support on BTF argument. - Update BTF argument support on the functions in the kernel loadable modules (only loaded modules are supported). - Move generic BTF access function (search function prototype and get function parameters) to a separated file. - Add a function to search a member of data structure in BTF. - Support accessing BTF data structure member from probe args by C-like arrow('->') and dot('.') operators. e.g. 't sched_switch next=next->pid vruntime=next->se.vruntime' - Support accessing BTF data structure member from $retval. e.g. 'f getname_flags%return +0($retval->name):string' - Add string type checking if BTF type info is available. This will reject if user specify ":string" type for non "char pointer" type. - Automatically assume the fprobe event as a function return event if $retval is used. - selftests/ftrace: Add BTF data field access test cases. - Documentation: Update fprobe event example with BTF data field. * tag 'probes-v6.6' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace: Documentation: tracing: Update fprobe event example with BTF field selftests/ftrace: Add BTF fields access testcases tracing/fprobe-event: Assume fprobe is a return event by $retval tracing/probes: Add string type check with BTF tracing/probes: Support BTF field access from $retval tracing/probes: Support BTF based data structure field access tracing/probes: Add a function to search a member of a struct/union tracing/probes: Move finding func-proto API and getting func-param API to trace_btf tracing/probes: Support BTF argument on module functions tracing/eprobe: Iterate trace_eprobe directly kernel: kprobes: Use struct_size()
2023-09-02Merge tag 'x86-urgent-2023-09-02' of ↵Linus Torvalds1-1/+1
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 selftest fix from Ingo Molnar: "Fix the __NR_map_shadow_stack syscall-renumbering fallout in the x86 self-test code. [ Arguably the existing code was unnecessarily fragile, and tooling should have picked up the new syscall number, and a wider fix is being worked on - but meanwhile, let's not have the old syscall number in the kernel tree. ]" * tag 'x86-urgent-2023-09-02' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: selftests/x86: Update map_shadow_stack syscall nr
2023-09-02perf parse-events: Fixes relating to no_value termsIan Rogers3-4/+4
A term may have no value in which case it is assumed to have a value of 1. It doesn't just apply to alias/event terms so change the parse_events_term__to_strbuf assert. Commit 99e7138eb7897aa0 ("perf tools: Fail on using multiple bits long terms without value") made it so that no_value terms could only be for a single bit. Prior to commit 64199ae4b8a3 ("perf parse-events: Fix propagation of term's no_value when cloning") this missed a test case where config1 had no_value. Fixes: 64199ae4b8a36038 ("perf parse-events: Fix propagation of term's no_value when cloning") Signed-off-by: Ian Rogers <irogers@google.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: James Clark <james.clark@arm.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Rob Herring <robh@kernel.org> Link: https://lore.kernel.org/r/20230901233949.2930562-1-irogers@google.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2023-09-01Merge tag 'trace-v6.6' of ↵Linus Torvalds2-4/+14
git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace Pull tracing updates from Steven Rostedt: "User visible changes: - Added a way to easier filter with cpumasks: # echo 'cpumask & CPUS{17-42}' > /sys/kernel/tracing/events/ipi_send_cpumask/filter - Show actual size of ring buffer after modifying the ring buffer size via buffer_size_kb. Currently it just returns what was written, but the actual size rounds up to the sub buffer size. Show that real size instead. Major changes: - Added "eventfs". This is the code that handles the inodes and dentries of tracefs/events directory. As there are thousands of events, and each event has several inodes and dentries that currently exist even when tracing is never used, they take up precious memory. Instead, eventfs will allocate the inodes and dentries in a JIT way (similar to what procfs does). There is now metadata that handles the events and subdirectories, and will create the inodes and dentries when they are used. Note, I also have patches that remove the subdirectory meta data, but will wait till the next merge window before applying them. It's a little more complex, and I want to make sure the dynamic code works properly before adding more complexity, making it easier to revert if need be. Minor changes: - Optimization to user event list traversal - Remove intermediate permission of tracefs files (note the intermediate permission removes all access to the files so it is not a security concern, but just a clean up) - Add the complex fix to FORTIFY_SOURCE to the kernel stack event logic - Other minor cleanups" * tag 'trace-v6.6' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace: (29 commits) tracefs: Remove kerneldoc from struct eventfs_file tracefs: Avoid changing i_mode to a temp value tracing/user_events: Optimize safe list traversals ftrace: Remove empty declaration ftrace_enable_daemon() and ftrace_disable_daemon() tracing: Remove unused function declarations tracing/filters: Document cpumask filtering tracing/filters: Further optimise scalar vs cpumask comparison tracing/filters: Optimise CPU vs cpumask filtering when the user mask is a single CPU tracing/filters: Optimise scalar vs cpumask filtering when the user mask is a single CPU tracing/filters: Optimise cpumask vs cpumask filtering when user mask is a single CPU tracing/filters: Enable filtering the CPU common field by a cpumask tracing/filters: Enable filtering a scalar field by a cpumask tracing/filters: Enable filtering a cpumask field by another cpumask tracing/filters: Dynamically allocate filter_pred.regex test: ftrace: Fix kprobe test for eventfs eventfs: Move tracing/events to eventfs eventfs: Implement removal of meta data from eventfs eventfs: Implement functions to create files and dirs when accessed eventfs: Implement eventfs lookup, read, open functions eventfs: Implement eventfs file add functions ...
2023-09-01Merge tag 'wq-for-6.6' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wqLinus Torvalds2-7/+191
Pull workqueue updates from Tejun Heo: - Unbound workqueues now support more flexible affinity scopes. The default behavior is to soft-affine according to last level cache boundaries. A work item queued from a given LLC is executed by a worker running on the same LLC but the worker may be moved across cache boundaries as the scheduler sees fit. On machines which multiple L3 caches, which are becoming more popular along with chiplet designs, this improves cache locality while not harming work conservation too much. Unbound workqueues are now also a lot more flexible in terms of execution affinity. Differeing levels of affinity scopes are supported and both the default and per-workqueue affinity settings can be modified dynamically. This should help working around amny of sub-optimal behaviors observed recently with asymmetric ARM CPUs. This involved signficant restructuring of workqueue code. Nothing was reported yet but there's some risk of subtle regressions. Should keep an eye out. - Rescuer workers now has more identifiable comms. - workqueue.unbound_cpus added so that CPUs which can be used by workqueue can be constrained early during boot. - Now that all the in-tree users have been flushed out, trigger warning if system-wide workqueues are flushed. * tag 'wq-for-6.6' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq: (31 commits) workqueue: fix data race with the pwq->stats[] increment workqueue: Rename rescuer kworker workqueue: Make default affinity_scope dynamically updatable workqueue: Add "Affinity Scopes and Performance" section to documentation workqueue: Implement non-strict affinity scope for unbound workqueues workqueue: Add workqueue_attrs->__pod_cpumask workqueue: Factor out need_more_worker() check and worker wake-up workqueue: Factor out work to worker assignment and collision handling workqueue: Add multiple affinity scopes and interface to select them workqueue: Modularize wq_pod_type initialization workqueue: Add tools/workqueue/wq_dump.py which prints out workqueue configuration workqueue: Generalize unbound CPU pods workqueue: Factor out clearing of workqueue-only attrs fields workqueue: Factor out actual cpumask calculation to reduce subtlety in wq_update_pod() workqueue: Initialize unbound CPU pods later in the boot workqueue: Move wq_pod_init() below workqueue_init() workqueue: Rename NUMA related names to use pod instead workqueue: Rename workqueue_attrs->no_numa to ->ordered workqueue: Make unbound workqueues to use per-cpu pool_workqueues workqueue: Call wq_update_unbound_numa() on all CPUs in NUMA node on CPU hotplug ...
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