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2021-11-19Merge tag 'perf-tools-fixes-for-v5.16-2021-11-19' of ↵Linus Torvalds22-109/+136
git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux Pull perf tools fixes from Arnaldo Carvalho de Melo: - Fix the 'local_weight', 'weight' (memory access latency), 'local_ins_lat', 'ins_lat' (instruction latency) and 'pstage_cyc' (pipeline stage cycles) sort key sample aggregation. - Fix 'perf test' entry for watchpoints on s/390. - Fix branch_stack entry endianness check in the 'perf test' sample parsing test. - Fix ARM SPE handling on 'perf inject'. - Fix memory leaks detected with ASan. - Fix build on arm64 related to reallocarray() availability. - Sync copies of kernel headers: cpufeatures, kvm, MIPS syscalltable (futex_waitv). * tag 'perf-tools-fixes-for-v5.16-2021-11-19' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux: perf evsel: Fix memory leaks relating to unit perf report: Fix memory leaks around perf_tip() perf hist: Fix memory leak of a perf_hpp_fmt tools headers UAPI: Sync MIPS syscall table file changed by new futex_waitv syscall tools build: Fix removal of feature-sync-compare-and-swap feature detection perf inject: Fix ARM SPE handling perf bench: Fix two memory leaks detected with ASan perf test sample-parsing: Fix branch_stack entry endianness check tools headers UAPI: Sync x86's asm/kvm.h with the kernel sources perf sort: Fix the 'p_stage_cyc' sort key behavior perf sort: Fix the 'ins_lat' sort key behavior perf sort: Fix the 'weight' sort key behavior perf tools: Set COMPAT_NEED_REALLOCARRAY for CONFIG_AUXTRACE=1 perf tests wp: Remove unused functions on s390 tools headers UAPI: Sync linux/kvm.h with the kernel sources tools headers cpufeatures: Sync with the kernel sources
2021-11-19Merge tag 'gpio-fixes-for-v5.16-rc2' of ↵Linus Torvalds2-1/+2
git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux Pull gpio fixes from Bartosz Golaszewski: - fix a coccicheck warning in gpio-virtio - fix gpio selftests build issues - fix a Kconfig issue in gpio-rockchip * tag 'gpio-fixes-for-v5.16-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux: gpio: rockchip: needs GENERIC_IRQ_CHIP to fix build errors selftests: gpio: restore CFLAGS options selftests: gpio: fix uninitialised variable warning selftests: gpio: fix gpio compiling error gpio: virtio: remove unneeded semicolon
2021-11-18Merge tag 'net-5.16-rc2' of ↵Linus Torvalds13-33/+523
git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net Pull networking fixes from Jakub Kicinski: "Including fixes from bpf, mac80211. Current release - regressions: - devlink: don't throw an error if flash notification sent before devlink visible - page_pool: Revert "page_pool: disable dma mapping support...", turns out there are active arches who need it Current release - new code bugs: - amt: cancel delayed_work synchronously in amt_fini() Previous releases - regressions: - xsk: fix crash on double free in buffer pool - bpf: fix inner map state pruning regression causing program rejections - mac80211: drop check for DONT_REORDER in __ieee80211_select_queue, preventing mis-selecting the best effort queue - mac80211: do not access the IV when it was stripped - mac80211: fix radiotap header generation, off-by-one - nl80211: fix getting radio statistics in survey dump - e100: fix device suspend/resume Previous releases - always broken: - tcp: fix uninitialized access in skb frags array for Rx 0cp - bpf: fix toctou on read-only map's constant scalar tracking - bpf: forbid bpf_ktime_get_coarse_ns and bpf_timer_* in tracing progs - tipc: only accept encrypted MSG_CRYPTO msgs - smc: transfer remaining wait queue entries during fallback, fix missing wake ups - udp: validate checksum in udp_read_sock() (when sockmap is used) - sched: act_mirred: drop dst for the direction from egress to ingress - virtio_net_hdr_to_skb: count transport header in UFO, prevent allowing bad skbs into the stack - nfc: reorder the logic in nfc_{un,}register_device, fix unregister - ipsec: check return value of ipv6_skip_exthdr - usb: r8152: add MAC passthrough support for more Lenovo Docks" * tag 'net-5.16-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (96 commits) ptp: ocp: Fix a couple NULL vs IS_ERR() checks net: ethernet: dec: tulip: de4x5: fix possible array overflows in type3_infoblock() net: tulip: de4x5: fix the problem that the array 'lp->phy[8]' may be out of bound ipv6: check return value of ipv6_skip_exthdr e100: fix device suspend/resume devlink: Don't throw an error if flash notification sent before devlink visible page_pool: Revert "page_pool: disable dma mapping support..." ethernet: hisilicon: hns: hns_dsaf_misc: fix a possible array overflow in hns_dsaf_ge_srst_by_port() octeontx2-af: debugfs: don't corrupt user memory NFC: add NCI_UNREG flag to eliminate the race NFC: reorder the logic in nfc_{un,}register_device NFC: reorganize the functions in nci_request tipc: check for null after calling kmemdup i40e: Fix display error code in dmesg i40e: Fix creation of first queue by omitting it if is not power of two i40e: Fix warning message and call stack during rmmod i40e driver i40e: Fix ping is lost after configuring ADq on VF i40e: Fix changing previously set num_queue_pairs for PFs i40e: Fix NULL ptr dereference on VSI filter sync i40e: Fix correct max_pkt_size on VF RX queue ...
2021-11-18Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvmLinus Torvalds14-237/+309
Pull KVM fixes from Paolo Bonzini: "Selftest changes: - Cleanups for the perf test infrastructure and mapping hugepages - Avoid contention on mmap_sem when the guests start to run - Add event channel upcall support to xen_shinfo_test x86 changes: - Fixes for Xen emulation - Kill kvm_map_gfn() / kvm_unmap_gfn() and broken gfn_to_pfn_cache - Fixes for migration of 32-bit nested guests on 64-bit hypervisor - Compilation fixes - More SEV cleanups Generic: - Cap the return value of KVM_CAP_NR_VCPUS to both KVM_CAP_MAX_VCPUS and num_online_cpus(). Most architectures were only using one of the two" * tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (42 commits) KVM: x86: Cap KVM_CAP_NR_VCPUS by KVM_CAP_MAX_VCPUS KVM: s390: Cap KVM_CAP_NR_VCPUS by num_online_cpus() KVM: RISC-V: Cap KVM_CAP_NR_VCPUS by KVM_CAP_MAX_VCPUS KVM: PPC: Cap KVM_CAP_NR_VCPUS by KVM_CAP_MAX_VCPUS KVM: MIPS: Cap KVM_CAP_NR_VCPUS by KVM_CAP_MAX_VCPUS KVM: arm64: Cap KVM_CAP_NR_VCPUS by kvm_arm_default_max_vcpus() KVM: x86: Assume a 64-bit hypercall for guests with protected state selftests: KVM: Add /x86_64/sev_migrate_tests to .gitignore riscv: kvm: fix non-kernel-doc comment block KVM: SEV: Fix typo in and tweak name of cmd_allowed_from_miror() KVM: SEV: Drop a redundant setting of sev->asid during initialization KVM: SEV: WARN if SEV-ES is marked active but SEV is not KVM: SEV: Set sev_info.active after initial checks in sev_guest_init() KVM: SEV: Disallow COPY_ENC_CONTEXT_FROM if target has created vCPUs KVM: Kill kvm_map_gfn() / kvm_unmap_gfn() and gfn_to_pfn_cache KVM: nVMX: Use a gfn_to_hva_cache for vmptrld KVM: nVMX: Use kvm_read_guest_offset_cached() for nested VMCS check KVM: x86/xen: Use sizeof_field() instead of open-coding it KVM: nVMX: Use kvm_{read,write}_guest_cached() for shadow_vmcs12 KVM: x86/xen: Fix get_attr of KVM_XEN_ATTR_TYPE_SHARED_INFO ...
2021-11-18perf evsel: Fix memory leaks relating to unitIan Rogers4-18/+22
unit may have a strdup pointer or be to a literal, consequently memory assocciated with it isn't freed. Change it so the unit is always strdup and so the memory can be safely freed. Fix related issue in perf_event__process_event_update() for name and own_cpus. Leaks were spotted by leak sanitizer. Signed-off-by: Ian Rogers <irogers@google.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lore.kernel.org/lkml/20211118084749.2191447-1-irogers@google.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2021-11-18perf report: Fix memory leaks around perf_tip()Ian Rogers3-14/+17
perf_tip() may allocate memory or use a literal, this means memory wasn't freed if allocated. Change the API so that literals aren't used. At the same time add missing frees for system_path. These issues were spotted using leak sanitizer. Signed-off-by: Ian Rogers <irogers@google.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lore.kernel.org/lkml/20211118073804.2149974-1-irogers@google.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2021-11-18perf hist: Fix memory leak of a perf_hpp_fmtIan Rogers2-15/+14
perf_hpp__column_unregister() removes an entry from a list but doesn't free the memory causing a memory leak spotted by leak sanitizer. Add the free while at the same time reducing the scope of the function to static. Signed-off-by: Ian Rogers <irogers@google.com> Reviewed-by: Kajol Jain <kjain@linux.ibm.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lore.kernel.org/lkml/20211118071247.2140392-1-irogers@google.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2021-11-18tools headers UAPI: Sync MIPS syscall table file changed by new futex_waitv ↵Arnaldo Carvalho de Melo1-0/+1
syscall To pick the changes in these csets: b3ff2881ba18b852 ("MIPS: syscalls: Wire up futex_waitv syscall") That add support for this new syscall in tools such as 'perf trace'. For instance, this is now possible (adapted from the x86_64 test output): # perf trace -e futex_waitv ^C# # perf trace -v -e futex_waitv event qualifier tracepoint filter: (common_pid != 807333 && common_pid != 3564) && (id == 449) ^C# # perf trace -v -e futex* --max-events 10 event qualifier tracepoint filter: (common_pid != 812168 && common_pid != 3564) && (id == 202 || id == 449) mmap size 528384B ? ( ): Timer/219310 ... [continued]: futex()) = -1 ETIMEDOUT (Connection timed out) 0.012 ( 0.002 ms): Timer/219310 futex(uaddr: 0x7fd0b152d3c8, op: WAKE|PRIVATE_FLAG, val: 1) = 0 0.024 ( 0.060 ms): Timer/219310 futex(uaddr: 0x7fd0b152d420, op: WAIT_BITSET|PRIVATE_FLAG, utime: 0x7fd0b1657840, val3: MATCH_ANY) = 0 0.086 ( 0.001 ms): Timer/219310 futex(uaddr: 0x7fd0b152d3c8, op: WAKE|PRIVATE_FLAG, val: 1) = 0 0.088 ( ): Timer/219310 futex(uaddr: 0x7fd0b152d424, op: WAIT_BITSET|PRIVATE_FLAG, utime: 0x7fd0b1657840, val3: MATCH_ANY) ... 0.075 ( 0.005 ms): Web Content/219299 futex(uaddr: 0x7fd0b152d420, op: WAKE|PRIVATE_FLAG, val: 1) = 1 0.169 ( 0.004 ms): Web Content/219299 futex(uaddr: 0x7fd0b152d424, op: WAKE|PRIVATE_FLAG, val: 1) = 1 0.088 ( 0.089 ms): Timer/219310 ... [continued]: futex()) = 0 0.179 ( 0.001 ms): Timer/219310 futex(uaddr: 0x7fd0b152d3c8, op: WAKE|PRIVATE_FLAG, val: 1) = 0 0.181 ( ): Timer/219310 futex(uaddr: 0x7fd0b152d420, op: WAIT_BITSET|PRIVATE_FLAG, utime: 0x7fd0b1657840, val3: MATCH_ANY) ... # That is the filter expression attached to the raw_syscalls:sys_{enter,exit} tracepoints. $ grep futex_waitv tools/perf/arch/mips/entry/syscalls/syscall_n64.tbl 449 n64 futex_waitv sys_futex_waitv $ This addresses these perf build warnings: Warning: Kernel ABI header at 'tools/perf/arch/mips/entry/syscalls/syscall_n64.tbl' differs from latest version at 'arch/mips/kernel/syscalls/syscall_n64.tbl' diff -u tools/perf/arch/mips/entry/syscalls/syscall_n64.tbl arch/mips/kernel/syscalls/syscall_n64.tbl Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Cc: Wang Haojun <jiangliuer01@gmail.com> Link: https://lore.kernel.org/lkml/YZZRxuIyvSGLZhM4@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2021-11-18tools build: Fix removal of feature-sync-compare-and-swap feature detectionArnaldo Carvalho de Melo1-1/+0
The patch removing the feature-sync-compare-and-swap feature detection didn't remove the call to main_test_sync_compare_and_swap(), making the 'test-all' case fail an all the feature tests to be performed individually: $ cat /tmp/build/perf/feature/test-all.make.output In file included from test-all.c:18: test-libpython-version.c:5:10: error: #error 5 | #error | ^~~~~ test-all.c: In function ‘main’: test-all.c:203:9: error: implicit declaration of function ‘main_test_sync_compare_and_swap’ [-Werror=implicit-function-declaration] 203 | main_test_sync_compare_and_swap(argc, argv); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ cc1: all warnings being treated as errors $ Fix it, now to figure out what is that test-libpython-version.c problem... Fixes: 60fa754b2a5a4e0c ("tools: Remove feature-sync-compare-and-swap feature detection") Cc: Jiri Olsa <jolsa@redhat.com> Cc: Leo Yan <leo.yan@linaro.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Cc: Mike Leach <mike.leach@linaro.org> Cc: Namhyung Kim <namhyung@kernel.org> Link: https://lore.kernel.org/lkml/YZU9Fe0sgkHSXeC2@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2021-11-18perf inject: Fix ARM SPE handlingGerman Gomez1-0/+15
'perf inject' is currently not working for Arm SPE. When you try to run 'perf inject' and 'perf report' with a perf.data file that contains SPE traces, the tool reports a "Bad address" error: # ./perf record -e arm_spe_0/ts_enable=1,store_filter=1,branch_filter=1,load_filter=1/ -a -- sleep 1 # ./perf inject -i perf.data -o perf.inject.data --itrace # ./perf report -i perf.inject.data --stdio 0x42c00 [0x8]: failed to process type: 9 [Bad address] Error: failed to process sample As far as I know, the issue was first spotted in [1], but 'perf inject' was not yet injecting the samples. This patch does something similar to what cs_etm does for injecting the samples [2], but for SPE. [1] https://patchwork.kernel.org/project/linux-arm-kernel/cover/20210412091006.468557-1-leo.yan@linaro.org/#24117339 [2] https://git.kernel.org/pub/scm/linux/kernel/git/acme/linux.git/tree/tools/perf/util/cs-etm.c?h=perf/core&id=133fe2e617e48ca0948983329f43877064ffda3e#n1196 Reviewed-by: James Clark <james.clark@arm.com> Signed-off-by: German Gomez <german.gomez@arm.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: John Garry <john.garry@huawei.com> Cc: Leo Yan <leo.yan@linaro.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Will Deacon <will@kernel.org> Cc: linux-arm-kernel@lists.infradead.org Link: https://lore.kernel.org/r/20211105104130.28186-2-german.gomez@arm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2021-11-18perf bench: Fix two memory leaks detected with ASanSohaib Mohamed1-0/+4
ASan reports memory leaks while running: $ perf bench sched all Fixes: e27454cc6352c422 ("perf bench: Add sched-messaging.c: Benchmark for scheduler and IPC mechanisms based on hackbench") Signed-off-by: Sohaib Mohamed <sohaib.amhmd@gmail.com> Acked-by: Ian Rogers <irogers@google.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Hitoshi Mitake <h.mitake@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Paul Russel <rusty@rustcorp.com.au> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Pierre Gondois <pierre.gondois@arm.com> Link: http://lore.kernel.org/lkml/20211110022012.16620-1-sohaib.amhmd@gmail.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2021-11-18perf test sample-parsing: Fix branch_stack entry endianness checkThomas Richter1-1/+1
Commit 10269a2ca2b08cbd ("perf test sample-parsing: Add endian test for struct branch_flags") broke the test case 27 (Sample parsing) on s390 on linux-next tree: # perf test -Fv 27 27: Sample parsing --- start --- parsing failed for sample_type 0x800 ---- end ---- Sample parsing: FAILED! # The cause of the failure is a wrong #define BS_EXPECTED_BE statement in above commit. Correct this define and the test case runs fine. Output After: # perf test -Fv 27 27: Sample parsing : --- start --- ---- end ---- Sample parsing: Ok # Fixes: 10269a2ca2b08c ("perf test sample-parsing: Add endian test for struct branch_flags") Signed-off-by: Thomas Richter <tmricht@linux.ibm.com> Tested-by: Madhavan Srinivasan <maddy@linux.ibm.com> Acked-by: Madhavan Srinivasan <maddy@linux.ibm.com> CC: Sven Schnelle <svens@linux.ibm.com> Cc: Heiko Carstens <hca@linux.ibm.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Sumanth Korikkar <sumanthk@linux.ibm.com> Cc: Vasily Gorbik <gor@linux.ibm.com> Link: https://lore.kernel.org/r/54077e81-503e-3405-6cb0-6541eb5532cc@linux.ibm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2021-11-18tools headers UAPI: Sync x86's asm/kvm.h with the kernel sourcesArnaldo Carvalho de Melo1-0/+4
To pick the changes in: 828ca89628bfcb1b ("KVM: x86: Expose TSC offset controls to userspace") That just rebuilds kvm-stat.c on x86, no change in functionality. This silences these perf build warning: Warning: Kernel ABI header at 'tools/arch/x86/include/uapi/asm/kvm.h' differs from latest version at 'arch/x86/include/uapi/asm/kvm.h' diff -u tools/arch/x86/include/uapi/asm/kvm.h arch/x86/include/uapi/asm/kvm.h Cc: Oliver Upton <oupton@google.com> Cc: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2021-11-18perf sort: Fix the 'p_stage_cyc' sort key behaviorNamhyung Kim3-11/+7
andle 'p_stage_cyc' (for pipeline stage cycles) sort key with the same rationale as for the 'weight' and 'local_weight', see the fix in this series for a full explanation. Not sure it also needs the local and global variants. But I couldn't test it actually because I don't have the machine. Reviewed-by: Athira Jajeev <atrajeev@linux.vnet.ibm.com> Signed-off-by: Namhyung Kim <namhyung@kernel.org> Tested-by: Athira Jajeev <atrajeev@linux.vnet.ibm.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Athira Jajeev <atrajeev@linux.vnet.ibm.com> Cc: Ian Rogers <irogers@google.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: https://lore.kernel.org/r/20211105225617.151364-3-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2021-11-18perf sort: Fix the 'ins_lat' sort key behaviorNamhyung Kim3-25/+12
Handle 'ins_lat' (for instruction latency) and 'local_ins_lat' sort keys with the same rationale as for the 'weight' and 'local_weight', see the previous fix in this series for a full explanation. But I couldn't test it actually, so only build tested. Reviewed-by: Athira Jajeev <atrajeev@linux.vnet.ibm.com> Signed-off-by: Namhyung Kim <namhyung@kernel.org> Tested-by: Athira Jajeev <atrajeev@linux.vnet.ibm.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Athira Jajeev <atrajeev@linux.vnet.ibm.com> Cc: Ian Rogers <irogers@google.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: https://lore.kernel.org/r/20211105225617.151364-2-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2021-11-18perf sort: Fix the 'weight' sort key behaviorNamhyung Kim3-27/+13
Currently, the 'weight' field in the perf sample has latency information for some instructions like in memory accesses. And perf tool has 'weight' and 'local_weight' sort keys to display the info. But it's somewhat confusing what it shows exactly. In my understanding, 'local_weight' shows a weight in a single sample, and (global) 'weight' shows a sum of the weights in the hist_entry. For example: $ perf mem record -t load dd if=/dev/zero of=/dev/null bs=4k count=1M $ perf report --stdio -n -s +local_weight ... # # Overhead Samples Command Shared Object Symbol Local Weight # ........ ....... ....... ................ ......................... ............ # 21.23% 313 dd [kernel.vmlinux] [k] lockref_get_not_zero 32 12.43% 183 dd [kernel.vmlinux] [k] lockref_get_not_zero 35 11.97% 159 dd [kernel.vmlinux] [k] lockref_get_not_zero 36 10.40% 141 dd [kernel.vmlinux] [k] lockref_put_return 32 7.63% 113 dd [kernel.vmlinux] [k] lockref_get_not_zero 33 6.37% 92 dd [kernel.vmlinux] [k] lockref_get_not_zero 34 6.15% 90 dd [kernel.vmlinux] [k] lockref_put_return 33 ... So let's look at the 'lockref_get_not_zero' symbols. The top entry shows that 313 samples were captured with 'local_weight' 32, so the total weight should be 313 x 32 = 10016. But it's not the case: $ perf report --stdio -n -s +local_weight,weight -S lockref_get_not_zero ... # # Overhead Samples Command Shared Object Local Weight Weight # ........ ....... ....... ................ ............ ...... # 1.36% 4 dd [kernel.vmlinux] 36 144 0.47% 4 dd [kernel.vmlinux] 37 148 0.42% 4 dd [kernel.vmlinux] 32 128 0.40% 4 dd [kernel.vmlinux] 34 136 0.35% 4 dd [kernel.vmlinux] 36 144 0.34% 4 dd [kernel.vmlinux] 35 140 0.30% 4 dd [kernel.vmlinux] 36 144 0.30% 4 dd [kernel.vmlinux] 34 136 0.30% 4 dd [kernel.vmlinux] 32 128 0.30% 4 dd [kernel.vmlinux] 32 128 ... With the 'weight' sort key, it's divided to 4 samples even with the same info ('comm', 'dso', 'sym' and 'local_weight'). I don't think this is what we want. I found this because of the way it aggregates the 'weight' value. Since it's not a period, we should not add them in the he->stat. Otherwise, two 32 'weight' entries will create a 64 'weight' entry. After that, new 32 'weight' samples don't have a matching entry so it'd create a new entry and make it a 64 'weight' entry again and again. Later, they will be merged into 128 'weight' entries during the hists__collapse_resort() with 4 samples, multiple times like above. Let's keep the weight and display it differently. For 'local_weight', it can show the weight as is, and for (global) 'weight' it can display the number multiplied by the number of samples. With this change, I can see the expected numbers. $ perf report --stdio -n -s +local_weight,weight -S lockref_get_not_zero ... # # Overhead Samples Command Shared Object Local Weight Weight # ........ ....... ....... ................ ............ ..... # 21.23% 313 dd [kernel.vmlinux] 32 10016 12.43% 183 dd [kernel.vmlinux] 35 6405 11.97% 159 dd [kernel.vmlinux] 36 5724 7.63% 113 dd [kernel.vmlinux] 33 3729 6.37% 92 dd [kernel.vmlinux] 34 3128 4.17% 59 dd [kernel.vmlinux] 37 2183 0.08% 1 dd [kernel.vmlinux] 269 269 0.08% 1 dd [kernel.vmlinux] 38 38 Reviewed-by: Athira Jajeev <atrajeev@linux.vnet.ibm.com> Signed-off-by: Namhyung Kim <namhyung@kernel.org> Tested-by: Athira Jajeev <atrajeev@linux.vnet.ibm.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: https://lore.kernel.org/r/20211105225617.151364-1-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2021-11-18perf tools: Set COMPAT_NEED_REALLOCARRAY for CONFIG_AUXTRACE=1Arnaldo Carvalho de Melo1-0/+3
As it is being used in tools/perf/arch/arm64/util/arm-spe.c and the COMPAT_NEED_REALLOCARRAY was only being set when CORESIGHT=1 is set. Fixes: 56c31cdff7c2a640 ("perf arm-spe: Implement find_snapshot callback") Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: German Gomez <german.gomez@arm.com> Cc: James Clark <james.clark@arm.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: John Garry <john.garry@huawei.com> Cc: Leo Yan <leo.yan@linaro.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Will Deacon <will@kernel.org> Link: https://lore.kernel.org/all/YZT63mIc7iY01er3@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2021-11-18perf tests wp: Remove unused functions on s390Arnaldo Carvalho de Melo1-1/+1
Fixing these build problems: tests/wp.c:24:12: error: 'wp_read' defined but not used [-Werror=unused-function] static int wp_read(int fd, long long *count, int size) ^ tests/wp.c:35:13: error: 'get__perf_event_attr' defined but not used [-Werror=unused-function] static void get__perf_event_attr(struct perf_event_attr *attr, int wp_type, ^ CC /tmp/build/perf/util/print_binary.o Fixes: e47c6ecaae1df54a ("perf test: Convert watch point tests to test cases.") Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Brendan Higgins <brendanhiggins@google.com> Cc: Daniel Latypov <dlatypov@google.com> Cc: David Gow <davidgow@google.com> Cc: Ian Rogers <irogers@google.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jin Yao <yao.jin@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: John Garry <john.garry@huawei.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Paul Clarke <pc@us.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Sohaib Mohamed <sohaib.amhmd@gmail.com> Cc: Stephane Eranian <eranian@google.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2021-11-18tools headers UAPI: Sync linux/kvm.h with the kernel sourcesArnaldo Carvalho de Melo1-3/+27
To pick the changes in: b56639318bb2be66 ("KVM: SEV: Add support for SEV intra host migration") e615e355894e6197 ("KVM: x86: On emulation failure, convey the exit reason, etc. to userspace") a9d496d8e08ca1eb ("KVM: x86: Clarify the kvm_run.emulation_failure structure layout") c68dc1b577eabd56 ("KVM: x86: Report host tsc and realtime values in KVM_GET_CLOCK") dea8ee31a0392775 ("RISC-V: KVM: Add SBI v0.1 support") That just rebuilds perf, as these patches don't add any new KVM ioctl to be harvested for the the 'perf trace' ioctl syscall argument beautifiers. This is also by now used by tools/testing/selftests/kvm/, a simple test build succeeded. This silences this perf build warning: Warning: Kernel ABI header at 'tools/include/uapi/linux/kvm.h' differs from latest version at 'include/uapi/linux/kvm.h' diff -u tools/include/uapi/linux/kvm.h include/uapi/linux/kvm.h Cc: Anup Patel <anup@brainfault.org> Cc: Atish Patra <atish.patra@wdc.com> Cc: David Edmondson <david.edmondson@oracle.com> Cc: Oliver Upton <oupton@google.com> Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: Peter Gonda <pgonda@google.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2021-11-18tools headers cpufeatures: Sync with the kernel sourcesArnaldo Carvalho de Melo1-0/+2
To pick the changes from: eec2113eabd92b7b ("x86/fpu/amx: Define AMX state components and have it used for boot-time checks") This only causes these perf files to be rebuilt: CC /tmp/build/perf/bench/mem-memcpy-x86-64-asm.o CC /tmp/build/perf/bench/mem-memset-x86-64-asm.o And addresses this perf build warning: Warning: Kernel ABI header at 'tools/arch/x86/include/asm/cpufeatures.h' differs from latest version at 'arch/x86/include/asm/cpufeatures.h' diff -u tools/arch/x86/include/asm/cpufeatures.h arch/x86/include/asm/cpufeatures.h Cc: Borislav Petkov <bp@suse.de> Cc: Chang S. Bae <chang.seok.bae@intel.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2021-11-18selftests: KVM: Add /x86_64/sev_migrate_tests to .gitignoreArnaldo Carvalho de Melo1-0/+1
$ git status nothing to commit, working tree clean $ $ make -C tools/testing/selftests/kvm/ > /dev/null 2>&1 $ git status Untracked files: (use "git add <file>..." to include in what will be committed) tools/testing/selftests/kvm/x86_64/sev_migrate_tests nothing added to commit but untracked files present (use "git add" to track) $ Fixes: 6a58150859fdec76 ("selftest: KVM: Add intra host migration tests") Cc: Brijesh Singh <brijesh.singh@amd.com> Cc: David Rientjes <rientjes@google.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Marc Orr <marcorr@google.com> Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: Peter Gonda <pgonda@google.com> Cc: Sean Christopherson <seanjc@google.com> Cc: Tom Lendacky <thomas.lendacky@amd.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Message-Id: <YZPIPfvYgRDCZi/w@kernel.org> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2021-11-16selftests: add a test case for mirred egress to ingressDavide Caratti2-1/+47
add a selftest that verifies the correct behavior of TC act_mirred egress to ingress: in particular, it checks if the dst_entry is removed from skb before redirect egress -> ingress. The correct behavior is: an ICMP 'echo request' generated by ping will be received and generate a reply the same way as the one generated by mausezahn. Suggested-by: Jamal Hadi Salim <jhs@mojatatu.com> Signed-off-by: Davide Caratti <dcaratti@redhat.com> Acked-by: Cong Wang <cong.wang@bytedance.com> Reviewed-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2021-11-16Merge https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpfJakub Kicinski10-25/+467
Daniel Borkmann says: ==================== pull-request: bpf 2021-11-16 We've added 12 non-merge commits during the last 5 day(s) which contain a total of 23 files changed, 573 insertions(+), 73 deletions(-). The main changes are: 1) Fix pruning regression where verifier went overly conservative rejecting previsouly accepted programs, from Alexei Starovoitov and Lorenz Bauer. 2) Fix verifier TOCTOU bug when using read-only map's values as constant scalars during verification, from Daniel Borkmann. 3) Fix a crash due to a double free in XSK's buffer pool, from Magnus Karlsson. 4) Fix libbpf regression when cross-building runqslower, from Jean-Philippe Brucker. 5) Forbid use of bpf_ktime_get_coarse_ns() and bpf_timer_*() helpers in tracing programs due to deadlock possibilities, from Dmitrii Banshchikov. 6) Fix checksum validation in sockmap's udp_read_sock() callback, from Cong Wang. 7) Various BPF sample fixes such as XDP stats in xdp_sample_user, from Alexander Lobakin. 8) Fix libbpf gen_loader error handling wrt fd cleanup, from Kumar Kartikeya Dwivedi. * https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf: udp: Validate checksum in udp_read_sock() bpf: Fix toctou on read-only map's constant scalar tracking samples/bpf: Fix build error due to -isystem removal selftests/bpf: Add tests for restricted helpers bpf: Forbid bpf_ktime_get_coarse_ns and bpf_timer_* in tracing progs libbpf: Perform map fd cleanup for gen_loader in case of error samples/bpf: Fix incorrect use of strlen in xdp_redirect_cpu tools/runqslower: Fix cross-build samples/bpf: Fix summary per-sec stats in xdp_sample_user selftests/bpf: Check map in map pruning bpf: Fix inner map state pruning regression. xsk: Fix crash on double free in buffer pool ==================== Link: https://lore.kernel.org/r/20211116141134.6490-1-daniel@iogearbox.net Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2021-11-16Merge branch 'kvm-selftest' into kvm-masterPaolo Bonzini13-237/+308
- Cleanups for the perf test infrastructure and mapping hugepages - Avoid contention on mmap_sem when the guests start to run - Add event channel upcall support to xen_shinfo_test
2021-11-16KVM: selftests: Use perf_test_destroy_vm in memslot_modification_stress_testDavid Matlack1-2/+1
Change memslot_modification_stress_test to use perf_test_destroy_vm instead of manually calling ucall_uninit and kvm_vm_free. No functional change intended. Signed-off-by: David Matlack <dmatlack@google.com> Reviewed-by: Ben Gardon <bgardon@google.com> Message-Id: <20211111001257.1446428-5-dmatlack@google.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2021-11-16KVM: selftests: Wait for all vCPU to be created before entering guest modeDavid Matlack1-0/+26
Thread creation requires taking the mmap_sem in write mode, which causes vCPU threads running in guest mode to block while they are populating memory. Fix this by waiting for all vCPU threads to be created and start running before entering guest mode on any one vCPU thread. This substantially improves the "Populate memory time" when using 1GiB pages since it allows all vCPUs to zero pages in parallel rather than blocking because a writer is waiting (which is waiting for another vCPU that is busy zeroing a 1GiB page). Before: $ ./dirty_log_perf_test -v256 -s anonymous_hugetlb_1gb ... Populate memory time: 52.811184013s After: $ ./dirty_log_perf_test -v256 -s anonymous_hugetlb_1gb ... Populate memory time: 10.204573342s Signed-off-by: David Matlack <dmatlack@google.com> Message-Id: <20211111001257.1446428-4-dmatlack@google.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2021-11-16KVM: selftests: Move vCPU thread creation and joining to common helpersDavid Matlack6-90/+67
Move vCPU thread creation and joining to common helper functions. This is in preparation for the next commit which ensures that all vCPU threads are fully created before entering guest mode on any one vCPU. No functional change intended. Signed-off-by: David Matlack <dmatlack@google.com> Reviewed-by: Ben Gardon <bgardon@google.com> Message-Id: <20211111001257.1446428-3-dmatlack@google.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2021-11-16KVM: selftests: Start at iteration 0 instead of -1David Matlack1-5/+3
Start at iteration 0 instead of -1 to avoid having to initialize vcpu_last_completed_iteration when setting up vCPU threads. This simplifies the next commit where we move vCPU thread initialization out to a common helper. No functional change intended. Signed-off-by: David Matlack <dmatlack@google.com> Message-Id: <20211111001257.1446428-2-dmatlack@google.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2021-11-16KVM: selftests: Sync perf_test_args to guest during VM creationSean Christopherson6-15/+16
Copy perf_test_args to the guest during VM creation instead of relying on the caller to do so at their leisure. Ideally, tests wouldn't even be able to modify perf_test_args, i.e. they would have no motivation to do the sync, but enforcing that is arguably a net negative for readability. No functional change intended. [Set wr_fract=1 by default and add helper to override it since the new access_tracking_perf_test needs to set it dynamically.] Signed-off-by: Sean Christopherson <seanjc@google.com> Signed-off-by: David Matlack <dmatlack@google.com> Reviewed-by: Ben Gardon <bgardon@google.com> Message-Id: <20211111000310.1435032-13-dmatlack@google.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2021-11-16KVM: selftests: Fill per-vCPU struct during "perf_test" VM creationSean Christopherson6-54/+45
Fill the per-vCPU args when creating the perf_test VM instead of having the caller do so. This helps ensure that any adjustments to the number of pages (and thus vcpu_memory_bytes) are reflected in the per-VM args. Automatically filling the per-vCPU args will also allow a future patch to do the sync to the guest during creation. Signed-off-by: Sean Christopherson <seanjc@google.com> [Updated access_tracking_perf_test as well.] Signed-off-by: David Matlack <dmatlack@google.com> Reviewed-by: Ben Gardon <bgardon@google.com> Message-Id: <20211111000310.1435032-12-dmatlack@google.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2021-11-16KVM: selftests: Create VM with adjusted number of guest pages for perf testsSean Christopherson1-2/+6
Use the already computed guest_num_pages when creating the so called extra VM pages for a perf test, and add a comment explaining why the pages are allocated as extra pages. Signed-off-by: Sean Christopherson <seanjc@google.com> Reviewed-by: Ben Gardon <bgardon@google.com> Signed-off-by: David Matlack <dmatlack@google.com> Message-Id: <20211111000310.1435032-11-dmatlack@google.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2021-11-16KVM: selftests: Remove perf_test_args.host_page_sizeSean Christopherson2-3/+1
Remove perf_test_args.host_page_size and instead use getpagesize() so that it's somewhat obvious that, for tests that care about the host page size, they care about the system page size, not the hardware page size, e.g. that the logic is unchanged if hugepages are in play. No functional change intended. Signed-off-by: Sean Christopherson <seanjc@google.com> Reviewed-by: Ben Gardon <bgardon@google.com> Signed-off-by: David Matlack <dmatlack@google.com> Message-Id: <20211111000310.1435032-10-dmatlack@google.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2021-11-16KVM: selftests: Move per-VM GPA into perf_test_argsSean Christopherson3-21/+10
Move the per-VM GPA into perf_test_args instead of storing it as a separate global variable. It's not obvious that guest_test_phys_mem holds a GPA, nor that it's connected/coupled with per_vcpu->gpa. No functional change intended. Signed-off-by: Sean Christopherson <seanjc@google.com> Reviewed-by: Ben Gardon <bgardon@google.com> Signed-off-by: David Matlack <dmatlack@google.com> Message-Id: <20211111000310.1435032-9-dmatlack@google.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2021-11-16KVM: selftests: Use perf util's per-vCPU GPA/pages in demand paging testSean Christopherson1-16/+5
Grab the per-vCPU GPA and number of pages from perf_util in the demand paging test instead of duplicating perf_util's calculations. Note, this may or may not result in a functional change. It's not clear that the test's calculations are guaranteed to yield the same value as perf_util, e.g. if guest_percpu_mem_size != vcpu_args->pages. Signed-off-by: Sean Christopherson <seanjc@google.com> Reviewed-by: Ben Gardon <bgardon@google.com> Signed-off-by: David Matlack <dmatlack@google.com> Message-Id: <20211111000310.1435032-8-dmatlack@google.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2021-11-16KVM: selftests: Capture per-vCPU GPA in perf_test_vcpu_argsSean Christopherson2-5/+5
Capture the per-vCPU GPA in perf_test_vcpu_args so that tests can get the GPA without having to calculate the GPA on their own. No functional change intended. Signed-off-by: Sean Christopherson <seanjc@google.com> Reviewed-by: Ben Gardon <bgardon@google.com> Signed-off-by: David Matlack <dmatlack@google.com> Message-Id: <20211111000310.1435032-7-dmatlack@google.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2021-11-16KVM: selftests: Use shorthand local var to access struct perf_tests_argsSean Christopherson1-16/+19
Use 'pta' as a local pointer to the global perf_tests_args in order to shorten line lengths and make the code borderline readable. No functional change intended. Signed-off-by: Sean Christopherson <seanjc@google.com> Reviewed-by: Ben Gardon <bgardon@google.com> Signed-off-by: David Matlack <dmatlack@google.com> Message-Id: <20211111000310.1435032-6-dmatlack@google.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2021-11-16KVM: selftests: Require GPA to be aligned when backed by hugepagesSean Christopherson2-1/+8
Assert that the GPA for a memslot backed by a hugepage is aligned to the hugepage size and fix perf_test_util accordingly. Lack of GPA alignment prevents KVM from backing the guest with hugepages, e.g. x86's write-protection of hugepages when dirty logging is activated is otherwise not exercised. Add a comment explaining that guest_page_size is for non-huge pages to try and avoid confusion about what it actually tracks. Cc: Ben Gardon <bgardon@google.com> Cc: Yanan Wang <wangyanan55@huawei.com> Cc: Andrew Jones <drjones@redhat.com> Cc: Peter Xu <peterx@redhat.com> Cc: Aaron Lewis <aaronlewis@google.com> Signed-off-by: Sean Christopherson <seanjc@google.com> [Used get_backing_src_pagesz() to determine alignment dynamically.] Signed-off-by: David Matlack <dmatlack@google.com> Message-Id: <20211111000310.1435032-5-dmatlack@google.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2021-11-16KVM: selftests: Assert mmap HVA is aligned when using HugeTLBSean Christopherson3-0/+17
Manually padding and aligning the mmap region is only needed when using THP. When using HugeTLB, mmap will always return an address aligned to the HugeTLB page size. Add a comment to clarify this and assert the mmap behavior for HugeTLB. [Removed requirement that HugeTLB mmaps must be padded per Yanan's feedback and added assertion that mmap returns aligned addresses when using HugeTLB.] Cc: Ben Gardon <bgardon@google.com> Cc: Yanan Wang <wangyanan55@huawei.com> Cc: Andrew Jones <drjones@redhat.com> Cc: Peter Xu <peterx@redhat.com> Cc: Aaron Lewis <aaronlewis@google.com> Signed-off-by: Sean Christopherson <seanjc@google.com> Signed-off-by: David Matlack <dmatlack@google.com> Message-Id: <20211111000310.1435032-4-dmatlack@google.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2021-11-16KVM: selftests: Expose align() helpers to testsSean Christopherson6-19/+34
Refactor align() to work with non-pointers and split into separate helpers for aligning up vs. down. Add align_ptr_up() for use with pointers. Expose all helpers so that they can be used by tests and/or other utilities. The align_down() helper in particular will be used to ensure gpa alignment for hugepages. No functional change intended. [Added sepearate up/down helpers and replaced open-coded alignment bit math throughout the KVM selftests.] Signed-off-by: Sean Christopherson <seanjc@google.com> Signed-off-by: David Matlack <dmatlack@google.com> Reviewed-by: Ben Gardon <bgardon@google.com> Message-Id: <20211111000310.1435032-3-dmatlack@google.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2021-11-16KVM: selftests: Explicitly state indicies for vm_guest_mode_params arraySean Christopherson1-9/+9
Explicitly state the indices when populating vm_guest_mode_params to make it marginally easier to visualize what's going on. No functional change intended. Signed-off-by: Sean Christopherson <seanjc@google.com> Reviewed-by: Ben Gardon <bgardon@google.com> [Added indices for new guest modes.] Signed-off-by: David Matlack <dmatlack@google.com> Message-Id: <20211111000310.1435032-2-dmatlack@google.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2021-11-16KVM: selftests: Add event channel upcall support to xen_shinfo_testDavid Woodhouse1-9/+66
When I first looked at this, there was no support for guest exception handling in the KVM selftests. In fact it was merged into 5.10 before the Xen support got merged in 5.11, and I could have used it from the start. Hook it up now, to exercise the Xen upcall delivery. I'm about to make things a bit more interesting by handling the full 2level event channel stuff in-kernel on top of the basic vector injection that we already have, and I'll want to build more tests on top. Signed-off-by: David Woodhouse <dwmw@amazon.co.uk> Message-Id: <20211115165030.7422-3-dwmw2@infradead.org> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2021-11-15selftests/bpf: Add tests for restricted helpersDmitrii Banshchikov4-1/+397
This patch adds tests that bpf_ktime_get_coarse_ns(), bpf_timer_* and bpf_spin_lock()/bpf_spin_unlock() helpers are forbidden in tracing progs as their use there may result in various locking issues. Signed-off-by: Dmitrii Banshchikov <me@ubique.spb.ru> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Link: https://lore.kernel.org/bpf/20211113142227.566439-3-me@ubique.spb.ru
2021-11-15selftests: gpio: restore CFLAGS optionsKent Gibson1-1/+1
All the CFLAGS options were incorrectly removed in the recent rework of the GPIO selftests. While some of the flags were specific to the old implementation the remainder are still relevant. Restore those options. Signed-off-by: Kent Gibson <warthog618@gmail.com> Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
2021-11-15selftests: gpio: fix uninitialised variable warningKent Gibson1-1/+1
When compiled with -Wall gpio-mockup-cdev.c reports an uninitialised variable warning. This is a false positive, as the variable is ignored in the case it is uninitialised, but initialise the variable anyway to remove the warning. Signed-off-by: Kent Gibson <warthog618@gmail.com> Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
2021-11-15selftests: gpio: fix gpio compiling errorLi Zhijian1-0/+1
The gpio selftests build against the system includes rather than the headers from the linux tree. This results in the compile failing if the system includes are outdated. Prefer the headers from the linux tree, as per other selftests. Fixes: 8bc395a6a2e2 ("selftests: gpio: rework and simplify test implementation") Reported-by: kernel test robot <lkp@intel.com> Signed-off-by: Li Zhijian <lizhijian@cn.fujitsu.com> [Kent: reworded commit comment and added Fixes:] Signed-off-by: Kent Gibson <warthog618@gmail.com> Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
2021-11-14Merge tag 'locking-urgent-2021-11-14' of ↵Linus Torvalds1-0/+3
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 static call update from Thomas Gleixner: "A single fix for static calls to make the trampoline patching more robust by placing explicit signature bytes after the call trampoline to prevent patching random other jumps like the CFI jump table entries" * tag 'locking-urgent-2021-11-14' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: static_call,x86: Robustify trampoline patching
2021-11-14Merge tag 'perf-tools-for-v5.16-2021-11-13' of ↵Linus Torvalds131-1148/+2639
git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux Pull more perf tools updates from Arnaldo Carvalho de Melo: "Hardware tracing: - ARM: * Print the size of the buffer size consistently in hexadecimal in ARM Coresight. * Add Coresight snapshot mode support. * Update --switch-events docs in 'perf record'. * Support hardware-based PID tracing. * Track task context switch for cpu-mode events. - Vendor events: * Add metric events JSON file for power10 platform perf test: - Get 'perf test' unit tests closer to kunit. - Topology tests improvements. - Remove bashisms from some tests. perf bench: - Fix memory leak of perf_cpu_map__new() in the futex benchmarks. libbpf: - Add some more weak libbpf functions o allow building with the libbpf versions, old ones, present in distros. libbeauty: - Translate [gs]setsockopt 'level' argument integer values to strings. tools headers UAPI: - Sync futex_waitv, arch prctl, sound, i195_drm and msr-index files with the kernel sources. Documentation: - Add documentation to 'struct symbol'. - Synchronize the definition of enum perf_hw_id with code in tools/perf/design.txt" * tag 'perf-tools-for-v5.16-2021-11-13' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux: (67 commits) perf tests: Remove bash constructs from stat_all_pmu.sh perf tests: Remove bash construct from record+zstd_comp_decomp.sh perf test: Remove bash construct from stat_bpf_counters.sh test perf bench futex: Fix memory leak of perf_cpu_map__new() tools arch x86: Sync the msr-index.h copy with the kernel sources tools headers UAPI: Sync drm/i915_drm.h with the kernel sources tools headers UAPI: Sync sound/asound.h with the kernel sources tools headers UAPI: Sync linux/prctl.h with the kernel sources tools headers UAPI: Sync arch prctl headers with the kernel sources perf tools: Add more weak libbpf functions perf bpf: Avoid memory leak from perf_env__insert_btf() perf symbols: Factor out annotation init/exit perf symbols: Bit pack to save a byte perf symbols: Add documentation to 'struct symbol' tools headers UAPI: Sync files changed by new futex_waitv syscall perf test bpf: Use ARRAY_CHECK() instead of ad-hoc equivalent, addressing array_size.cocci warning perf arm-spe: Support hardware-based PID tracing perf arm-spe: Save context ID in record perf arm-spe: Update --switch-events docs in 'perf record' perf arm-spe: Track task context switch for cpu-mode events ...
2021-11-13perf tests: Remove bash constructs from stat_all_pmu.shJames Clark1-2/+2
The tests were passing but without testing and were printing the following: $ ./perf test -v 90 90: perf all PMU test : --- start --- test child forked, pid 51650 Testing cpu/branch-instructions/ ./tests/shell/stat_all_pmu.sh: 10: [: Performance counter stats for 'true': 137,307 cpu/branch-instructions/ 0.001686672 seconds time elapsed 0.001376000 seconds user 0.000000000 seconds sys: unexpected operator Changing the regexes to a grep works in sh and prints this: $ ./perf test -v 90 90: perf all PMU test : --- start --- test child forked, pid 60186 [...] Testing tlb_flush.stlb_any test child finished with 0 ---- end ---- perf all PMU test: Ok Signed-off-by: James Clark <james.clark@arm.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Florian Fainelli <f.fainelli@gmail.com> Cc: Ian Rogers <irogers@google.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: John Fastabend <john.fastabend@gmail.com> Cc: KP Singh <kpsingh@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Martin KaFai Lau <kafai@fb.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Song Liu <songliubraving@fb.com> Cc: Sumanth Korikkar <sumanthk@linux.ibm.com> Cc: Thomas Richter <tmricht@linux.ibm.com> Cc: Yonghong Song <yhs@fb.com> Cc: bpf@vger.kernel.org Cc: netdev@vger.kernel.org Link: https://lore.kernel.org/r/20211028134828.65774-4-james.clark@arm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2021-11-13perf tests: Remove bash construct from record+zstd_comp_decomp.shJames Clark1-1/+1
Commit 463538a383a2 ("perf tests: Fix test 68 zstd compression for s390") inadvertently removed the -g flag from all platforms rather than just s390, because the [[ ]] construct fails in sh. Changing to single brackets restores testing of call graphs and removes the following error from the output: $ ./perf test -v 85 85: Zstd perf.data compression/decompression : --- start --- test child forked, pid 50643 Collecting compressed record file: ./tests/shell/record+zstd_comp_decomp.sh: 15: [[: not found Fixes: 463538a383a2 ("perf tests: Fix test 68 zstd compression for s390") Signed-off-by: James Clark <james.clark@arm.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Florian Fainelli <f.fainelli@gmail.com> Cc: Ian Rogers <irogers@google.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: John Fastabend <john.fastabend@gmail.com> Cc: KP Singh <kpsingh@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Martin KaFai Lau <kafai@fb.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Song Liu <songliubraving@fb.com> Cc: Sumanth Korikkar <sumanthk@linux.ibm.com> Cc: Thomas Richter <tmricht@linux.ibm.com> Cc: Yonghong Song <yhs@fb.com> Cc: bpf@vger.kernel.org Cc: netdev@vger.kernel.org Link: https://lore.kernel.org/r/20211028134828.65774-3-james.clark@arm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2021-11-13perf test: Remove bash construct from stat_bpf_counters.sh testJames Clark1-1/+1
Currently the test skips with an error because == only works in bash: $ ./perf test 91 -v Couldn't bump rlimit(MEMLOCK), failures may take place when creating BPF maps, etc 91: perf stat --bpf-counters test : --- start --- test child forked, pid 44586 ./tests/shell/stat_bpf_counters.sh: 26: [: -v: unexpected operator test child finished with -2 ---- end ---- perf stat --bpf-counters test: Skip Changing == to = does the same thing, but doesn't result in an error: ./perf test 91 -v Couldn't bump rlimit(MEMLOCK), failures may take place when creating BPF maps, etc 91: perf stat --bpf-counters test : --- start --- test child forked, pid 45833 Skipping: --bpf-counters not supported Error: unknown option `bpf-counters' [...] test child finished with -2 ---- end ---- perf stat --bpf-counters test: Skip Signed-off-by: James Clark <james.clark@arm.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Florian Fainelli <f.fainelli@gmail.com> Cc: Ian Rogers <irogers@google.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: John Fastabend <john.fastabend@gmail.com> Cc: KP Singh <kpsingh@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Martin KaFai Lau <kafai@fb.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Song Liu <songliubraving@fb.com> Cc: Sumanth Korikkar <sumanthk@linux.ibm.com> Cc: Thomas Richter <tmricht@linux.ibm.com> Cc: Yonghong Song <yhs@fb.com> Cc: bpf@vger.kernel.org Cc: netdev@vger.kernel.org Link: https://lore.kernel.org/r/20211028134828.65774-2-james.clark@arm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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