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2020-06-01Merge tag 'perf-core-2020-06-01' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull perf updates from Ingo Molnar: "Kernel side changes: - Add AMD Fam17h RAPL support - Introduce CAP_PERFMON to kernel and user space - Add Zhaoxin CPU support - Misc fixes and cleanups Tooling changes: - perf record: Introduce '--switch-output-event' to use arbitrary events to be setup and read from a side band thread and, when they take place a signal be sent to the main 'perf record' thread, reusing the core for '--switch-output' to take perf.data snapshots from the ring buffer used for '--overwrite', e.g.: # perf record --overwrite -e sched:* \ --switch-output-event syscalls:*connect* \ workload will take perf.data.YYYYMMDDHHMMSS snapshots up to around the connect syscalls. Add '--num-synthesize-threads' option to control degree of parallelism of the synthesize_mmap() code which is scanning /proc/PID/task/PID/maps and can be time consuming. This mimics pre-existing behaviour in 'perf top'. - perf bench: Add a multi-threaded synthesize benchmark and kallsyms parsing benchmark. - Intel PT support: Stitch LBR records from multiple samples to get deeper backtraces, there are caveats, see the csets for details. Allow using Intel PT to synthesize callchains for regular events. Add support for synthesizing branch stacks for regular events (cycles, instructions, etc) from Intel PT data. Misc changes: - Updated perf vendor events for power9 and Coresight. - Add flamegraph.py script via 'perf flamegraph' - Misc other changes, fixes and cleanups - see the Git log for details Also, since over the last couple of years perf tooling has matured and decoupled from the kernel perf changes to a large degree, going forward Arnaldo is going to send perf tooling changes via direct pull requests" * tag 'perf-core-2020-06-01' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (163 commits) perf/x86/rapl: Add AMD Fam17h RAPL support perf/x86/rapl: Make perf_probe_msr() more robust and flexible perf/x86/rapl: Flip logic on default events visibility perf/x86/rapl: Refactor to share the RAPL code between Intel and AMD CPUs perf/x86/rapl: Move RAPL support to common x86 code perf/core: Replace zero-length array with flexible-array perf/x86: Replace zero-length array with flexible-array perf/x86/intel: Add more available bits for OFFCORE_RESPONSE of Intel Tremont perf/x86/rapl: Add Ice Lake RAPL support perf flamegraph: Use /bin/bash for report and record scripts perf cs-etm: Move definition of 'traceid_list' global variable from header file libsymbols kallsyms: Move hex2u64 out of header libsymbols kallsyms: Parse using io api perf bench: Add kallsyms parsing perf: cs-etm: Update to build with latest opencsd version. perf symbol: Fix kernel symbol address display perf inject: Rename perf_evsel__*() operating on 'struct evsel *' to evsel__*() perf annotate: Rename perf_evsel__*() operating on 'struct evsel *' to evsel__*() perf trace: Rename perf_evsel__*() operating on 'struct evsel *' to evsel__*() perf script: Rename perf_evsel__*() operating on 'struct evsel *' to evsel__*() ...
2020-06-01kunit: Fix TabError, remove defconfig code and handle when there is no ↵Vitor Massaru Iha
kunitconfig The identation before this code (`if not os.path.exists(cli_args.build_dir):``) was with spaces instead of tabs after fixed up merge conflits, this commit revert spaces to tabs: [iha@bbking linux]$ tools/testing/kunit/kunit.py run File "tools/testing/kunit/kunit.py", line 247 if not linux: ^ TabError: inconsistent use of tabs and spaces in indentation [iha@bbking linux]$ tools/testing/kunit/kunit.py run Traceback (most recent call last): File "tools/testing/kunit/kunit.py", line 338, in <module> main(sys.argv[1:]) File "tools/testing/kunit/kunit.py", line 215, in main add_config_opts(config_parser) [iha@bbking linux]$ tools/testing/kunit/kunit.py run Traceback (most recent call last): File "tools/testing/kunit/kunit.py", line 337, in <module> main(sys.argv[1:]) File "tools/testing/kunit/kunit.py", line 255, in main result = run_tests(linux, request) File "tools/testing/kunit/kunit.py", line 133, in run_tests request.defconfig, AttributeError: 'KunitRequest' object has no attribute 'defconfig' Handles when there is no .kunitconfig, the error due to merge conflicts between the following: commit 9bdf64b35117 ("kunit: use KUnit defconfig by default") commit 45ba7a893ad8 ("kunit: kunit_tool: Separate out config/build/exec/parse") [iha@bbking linux]$ tools/testing/kunit/kunit.py run Traceback (most recent call last): File "tools/testing/kunit/kunit.py", line 335, in <module> main(sys.argv[1:]) File "tools/testing/kunit/kunit.py", line 246, in main linux = kunit_kernel.LinuxSourceTree() File "../tools/testing/kunit/kunit_kernel.py", line 109, in __init__ self._kconfig.read_from_file(kunitconfig_path) File "t../ools/testing/kunit/kunit_config.py", line 88, in read_from_file with open(path, 'r') as f: FileNotFoundError: [Errno 2] No such file or directory: '.kunit/.kunitconfig' Signed-off-by: Vitor Massaru Iha <vitor@massaru.org> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
2020-06-01Merge tag 'objtool-core-2020-06-01' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull objtool updates from Ingo Molnar: "There are a lot of objtool changes in this cycle, all across the map: - Speed up objtool significantly, especially when there are large number of sections - Improve objtool's understanding of special instructions such as IRET, to reduce the number of annotations required - Implement 'noinstr' validation - Do baby steps for non-x86 objtool use - Simplify/fix retpoline decoding - Add vmlinux validation - Improve documentation - Fix various bugs and apply smaller cleanups" * tag 'objtool-core-2020-06-01' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (54 commits) objtool: Enable compilation of objtool for all architectures objtool: Move struct objtool_file into arch-independent header objtool: Exit successfully when requesting help objtool: Add check_kcov_mode() to the uaccess safelist samples/ftrace: Fix asm function ELF annotations objtool: optimize add_dead_ends for split sections objtool: use gelf_getsymshndx to handle >64k sections objtool: Allow no-op CFI ops in alternatives x86/retpoline: Fix retpoline unwind x86: Change {JMP,CALL}_NOSPEC argument x86: Simplify retpoline declaration x86/speculation: Change FILL_RETURN_BUFFER to work with objtool objtool: Add support for intra-function calls objtool: Move the IRET hack into the arch decoder objtool: Remove INSN_STACK objtool: Make handle_insn_ops() unconditional objtool: Rework allocating stack_ops on decode objtool: UNWIND_HINT_RET_OFFSET should not check registers objtool: is_fentry_call() crashes if call has no destination x86,smap: Fix smap_{save,restore}() alternatives ...
2020-06-01Merge tag 'core-rcu-2020-06-01' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull RCU updates from Ingo Molnar: "The RCU updates for this cycle were: - RCU-tasks update, including addition of RCU Tasks Trace for BPF use and TASKS_RUDE_RCU - kfree_rcu() updates. - Remove scheduler locking restriction - RCU CPU stall warning updates. - Torture-test updates. - Miscellaneous fixes and other updates" * tag 'core-rcu-2020-06-01' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (103 commits) rcu: Allow for smp_call_function() running callbacks from idle rcu: Provide rcu_irq_exit_check_preempt() rcu: Abstract out rcu_irq_enter_check_tick() from rcu_nmi_enter() rcu: Provide __rcu_is_watching() rcu: Provide rcu_irq_exit_preempt() rcu: Make RCU IRQ enter/exit functions rely on in_nmi() rcu/tree: Mark the idle relevant functions noinstr x86: Replace ist_enter() with nmi_enter() x86/mce: Send #MC singal from task work x86/entry: Get rid of ist_begin/end_non_atomic() sched,rcu,tracing: Avoid tracing before in_nmi() is correct sh/ftrace: Move arch_ftrace_nmi_{enter,exit} into nmi exception lockdep: Always inline lockdep_{off,on}() hardirq/nmi: Allow nested nmi_enter() arm64: Prepare arch_nmi_enter() for recursion printk: Disallow instrumenting print_nmi_enter() printk: Prepare for nested printk_nmi_enter() rcutorture: Convert ULONG_CMP_LT() to time_before() torture: Add a --kasan argument torture: Save a few lines by using config_override_param initially ...
2020-06-01Merge tag 'pstore-v5.8-rc1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux Pull pstore updates from Kees Cook: "Fixes and new features for pstore. This is a pretty big set of changes (relative to past pstore pulls), but it has been in -next for a while. The biggest change here is the ability to support a block device as a pstore backend, which has been desired for a while. A lot of additional fixes and refactorings are also included, mostly in support of the new features. - refactor pstore locking for safer module unloading (Kees Cook) - remove orphaned records from pstorefs when backend unloaded (Kees Cook) - refactor dump_oops parameter into max_reason (Pavel Tatashin) - introduce pstore/zone for common code for contiguous storage (WeiXiong Liao) - introduce pstore/blk for block device backend (WeiXiong Liao) - introduce mtd backend (WeiXiong Liao)" * tag 'pstore-v5.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux: (35 commits) mtd: Support kmsg dumper based on pstore/blk pstore/blk: Introduce "best_effort" mode pstore/blk: Support non-block storage devices pstore/blk: Provide way to query pstore configuration pstore/zone: Provide way to skip "broken" zone for MTD devices Documentation: Add details for pstore/blk pstore/zone,blk: Add ftrace frontend support pstore/zone,blk: Add console frontend support pstore/zone,blk: Add support for pmsg frontend pstore/blk: Introduce backend for block devices pstore/zone: Introduce common layer to manage storage zones ramoops: Add "max-reason" optional field to ramoops DT node pstore/ram: Introduce max_reason and convert dump_oops pstore/platform: Pass max_reason to kmesg dump printk: Introduce kmsg_dump_reason_str() printk: honor the max_reason field in kmsg_dumper printk: Collapse shutdown types into a single dump reason pstore/ftrace: Provide ftrace log merging routine pstore/ram: Refactor ftrace buffer merging pstore/ram: Refactor DT size parsing ...
2020-06-01selftests: mlxsw: Add test for control packetsIdo Schimmel
Generate packets matching the various control traps and check that the traps' stats increase accordingly. Signed-off-by: Ido Schimmel <idosch@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-06-01sh: remove sh5 supportArnd Bergmann
sh5 never became a product and has probably never really worked. Remove it by recursively deleting all associated Kconfig options and all corresponding files. Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Rich Felker <dalias@libc.org>
2020-06-01Merge tag 'spi-v5.8' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi Pull spi updates from Mark Brown: "This has been a very active release for the DesignWare driver in particular - after a long period of inactivity we have had a lot of people actively working on it for unrelated reasons this cycle with some of that work still not landed. Otherwise it's been fairly quiet for the subsystem. Highlights include: - Lots of performance improvements and fixes for the DesignWare driver from Serge Semin, Andy Shevchenko, Wan Ahmad Zainie, Clement Leger, Dinh Nguyen and Jarkko Nikula. - Support for octal mode transfers in spidev. - Slave mode support for the Rockchip drivers. - Support for AMD controllers, Broadcom mspi and Raspberry Pi 4, and Intel Elkhart Lake" * tag 'spi-v5.8' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi: (125 commits) spi: spi-fsl-dspi: fix native data copy spi: Convert DW SPI binding to DT schema spi: dw: Refactor mid_spi_dma_setup() to separate DMA and IRQ config spi: dw: Make DMA request line assignments explicit for Intel Medfield spi: bcm2835: Remove shared interrupt support dt-bindings: snps,dw-apb-ssi: add optional reset property spi: dw: add reset control spi: bcm2835: Enable shared interrupt support spi: bcm2835: Implement shutdown callback spi: dw: Use regset32 DebugFS method to create regdump file spi: dw: Add DMA support to the DW SPI MMIO driver spi: dw: Cleanup generic DW DMA code namings spi: dw: Add DW SPI DMA/PCI/MMIO dependency on the DW SPI core spi: dw: Remove DW DMA code dependency from DW_DMAC_PCI spi: dw: Move Non-DMA code to the DW PCIe-SPI driver spi: dw: Add core suffix to the DW APB SSI core source file spi: dw: Fix Rx-only DMA transfers spi: dw: Use DMA max burst to set the request thresholds spi: dw: Parameterize the DMA Rx/Tx burst length spi: dw: Add SPI Rx-done wait method to DMA-based transfer ...
2020-06-01KVM: selftests: fix rdtsc() for vmx_tsc_adjust_testVitaly Kuznetsov
vmx_tsc_adjust_test fails with: IA32_TSC_ADJUST is -4294969448 (-1 * TSC_ADJUST_VALUE + -2152). IA32_TSC_ADJUST is -4294969448 (-1 * TSC_ADJUST_VALUE + -2152). IA32_TSC_ADJUST is 281470681738540 (65534 * TSC_ADJUST_VALUE + 4294962476). ==== Test Assertion Failure ==== x86_64/vmx_tsc_adjust_test.c:153: false pid=19738 tid=19738 - Interrupted system call 1 0x0000000000401192: main at vmx_tsc_adjust_test.c:153 2 0x00007fe1ef8583d4: ?? ??:0 3 0x0000000000401201: _start at ??:? Failed guest assert: (adjust <= max) The problem is that is 'tsc_val' should be u64, not u32 or the reading gets truncated. Fixes: 8d7fbf01f9afc ("KVM: selftests: VMX preemption timer migration test") Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com> Message-Id: <20200601154726.261868-1-vkuznets@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2020-06-01perf libdw: Fix off-by 1 relative directory includesIan Rogers
This is currently working due to extra include paths in the build. Before: $ cd tools/perf/arch/arm64/util $ ls -la ../../util/unwind-libdw.h ls: cannot access '../../util/unwind-libdw.h': No such file or directory After: $ ls -la ../../../util/unwind-libdw.h -rw-r----- 1 irogers irogers 553 Apr 17 14:31 ../../../util/unwind-libdw.h Signed-off-by: Ian Rogers <irogers@google.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lore.kernel.org/lkml/20200529225232.207532-1-irogers@google.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-06-01perf arm-spe: Support synthetic eventsTan Xiaojun
After the commit ffd3d18c20b8 ("perf tools: Add ARM Statistical Profiling Extensions (SPE) support") has been merged, it supports to output raw data with option "--dump-raw-trace". However, it misses for support synthetic events so cannot output any statistical info. This patch is to improve the "perf report" support for ARM SPE for four types synthetic events: First level cache synthetic events, including L1 data cache accessing and missing events; Last level cache synthetic events, including last level cache accessing and missing events; TLB synthetic events, including TLB accessing and missing events; Remote access events, which is used to account load/store operations caused to another socket. Example usage: $ perf record -c 1024 -e arm_spe_0/branch_filter=1,ts_enable=1,pct_enable=1,pa_enable=1,load_filter=1,jitter=1,store_filter=1,min_latency=0/ dd if=/dev/zero of=/dev/null count=10000 $ perf report --stdio # Samples: 59 of event 'l1d-miss' # Event count (approx.): 59 # # Children Self Command Shared Object Symbol # ........ ........ ....... ................. .................................. # 23.73% 23.73% dd [kernel.kallsyms] [k] perf_iterate_ctx.constprop.135 20.34% 20.34% dd [kernel.kallsyms] [k] filemap_map_pages 5.08% 5.08% dd [kernel.kallsyms] [k] perf_event_mmap 5.08% 5.08% dd [kernel.kallsyms] [k] unlock_page_memcg 5.08% 5.08% dd [kernel.kallsyms] [k] unmap_page_range 3.39% 3.39% dd [kernel.kallsyms] [k] PageHuge 3.39% 3.39% dd [kernel.kallsyms] [k] release_pages 3.39% 3.39% dd ld-2.28.so [.] 0x0000000000008b5c 1.69% 1.69% dd [kernel.kallsyms] [k] __alloc_fd [...] # Samples: 3K of event 'l1d-access' # Event count (approx.): 3980 # # Children Self Command Shared Object Symbol # ........ ........ ....... ................. ...................................... # 26.98% 26.98% dd [kernel.kallsyms] [k] ret_to_user 10.53% 10.53% dd [kernel.kallsyms] [k] fsnotify 7.51% 7.51% dd [kernel.kallsyms] [k] new_sync_read 4.57% 4.57% dd [kernel.kallsyms] [k] vfs_read 4.35% 4.35% dd [kernel.kallsyms] [k] vfs_write 3.69% 3.69% dd [kernel.kallsyms] [k] __fget_light 3.69% 3.69% dd [kernel.kallsyms] [k] rw_verify_area 3.44% 3.44% dd [kernel.kallsyms] [k] security_file_permission 2.76% 2.76% dd [kernel.kallsyms] [k] __fsnotify_parent 2.44% 2.44% dd [kernel.kallsyms] [k] ksys_write 2.24% 2.24% dd [kernel.kallsyms] [k] iov_iter_zero 2.19% 2.19% dd [kernel.kallsyms] [k] read_iter_zero 1.81% 1.81% dd dd [.] 0x0000000000002960 1.78% 1.78% dd dd [.] 0x0000000000002980 [...] # Samples: 35 of event 'llc-miss' # Event count (approx.): 35 # # Children Self Command Shared Object Symbol # ........ ........ ....... ................. ........................... # 34.29% 34.29% dd [kernel.kallsyms] [k] filemap_map_pages 8.57% 8.57% dd [kernel.kallsyms] [k] unlock_page_memcg 8.57% 8.57% dd [kernel.kallsyms] [k] unmap_page_range 5.71% 5.71% dd [kernel.kallsyms] [k] PageHuge 5.71% 5.71% dd [kernel.kallsyms] [k] release_pages 5.71% 5.71% dd ld-2.28.so [.] 0x0000000000008b5c 2.86% 2.86% dd [kernel.kallsyms] [k] __queue_work 2.86% 2.86% dd [kernel.kallsyms] [k] __radix_tree_lookup 2.86% 2.86% dd [kernel.kallsyms] [k] copy_page [...] # Samples: 2 of event 'llc-access' # Event count (approx.): 2 # # Children Self Command Shared Object Symbol # ........ ........ ....... ................. ............. # 50.00% 50.00% dd [kernel.kallsyms] [k] copy_page 50.00% 50.00% dd libc-2.28.so [.] _dl_addr # Samples: 48 of event 'tlb-miss' # Event count (approx.): 48 # # Children Self Command Shared Object Symbol # ........ ........ ....... ................. .................................. # 20.83% 20.83% dd [kernel.kallsyms] [k] perf_iterate_ctx.constprop.135 12.50% 12.50% dd [kernel.kallsyms] [k] __arch_clear_user 10.42% 10.42% dd [kernel.kallsyms] [k] clear_page 4.17% 4.17% dd [kernel.kallsyms] [k] copy_page 4.17% 4.17% dd [kernel.kallsyms] [k] filemap_map_pages 2.08% 2.08% dd [kernel.kallsyms] [k] __alloc_fd 2.08% 2.08% dd [kernel.kallsyms] [k] __mod_memcg_state.part.70 2.08% 2.08% dd [kernel.kallsyms] [k] __queue_work 2.08% 2.08% dd [kernel.kallsyms] [k] __rcu_read_unlock 2.08% 2.08% dd [kernel.kallsyms] [k] d_path 2.08% 2.08% dd [kernel.kallsyms] [k] destroy_inode 2.08% 2.08% dd [kernel.kallsyms] [k] do_dentry_open [...] # Samples: 9K of event 'tlb-access' # Event count (approx.): 9573 # # Children Self Command Shared Object Symbol # ........ ........ ....... ................. ...................................... # 25.79% 25.79% dd [kernel.kallsyms] [k] __arch_clear_user 11.22% 11.22% dd [kernel.kallsyms] [k] ret_to_user 8.56% 8.56% dd [kernel.kallsyms] [k] fsnotify 4.06% 4.06% dd [kernel.kallsyms] [k] new_sync_read 3.67% 3.67% dd [kernel.kallsyms] [k] el0_svc_common.constprop.2 3.04% 3.04% dd [kernel.kallsyms] [k] __fsnotify_parent 2.90% 2.90% dd [kernel.kallsyms] [k] vfs_write 2.82% 2.82% dd [kernel.kallsyms] [k] vfs_read 2.52% 2.52% dd libc-2.28.so [.] write 2.26% 2.26% dd [kernel.kallsyms] [k] security_file_permission 2.08% 2.08% dd [kernel.kallsyms] [k] ksys_write 1.96% 1.96% dd [kernel.kallsyms] [k] rw_verify_area 1.95% 1.95% dd [kernel.kallsyms] [k] read_iter_zero [...] # Samples: 9 of event 'branch-miss' # Event count (approx.): 9 # # Children Self Command Shared Object Symbol # ........ ........ ....... ................. ......................... # 22.22% 22.22% dd libc-2.28.so [.] _dl_addr 11.11% 11.11% dd [kernel.kallsyms] [k] __arch_clear_user 11.11% 11.11% dd [kernel.kallsyms] [k] __arch_copy_from_user 11.11% 11.11% dd [kernel.kallsyms] [k] __dentry_kill 11.11% 11.11% dd [kernel.kallsyms] [k] __efistub_memcpy 11.11% 11.11% dd ld-2.28.so [.] 0x0000000000012b7c 11.11% 11.11% dd libc-2.28.so [.] 0x000000000002a980 11.11% 11.11% dd libc-2.28.so [.] 0x0000000000083340 # Samples: 29 of event 'remote-access' # Event count (approx.): 29 # # Children Self Command Shared Object Symbol # ........ ........ ....... ................. ........................... # 41.38% 41.38% dd [kernel.kallsyms] [k] filemap_map_pages 10.34% 10.34% dd [kernel.kallsyms] [k] unlock_page_memcg 10.34% 10.34% dd [kernel.kallsyms] [k] unmap_page_range 6.90% 6.90% dd [kernel.kallsyms] [k] release_pages 3.45% 3.45% dd [kernel.kallsyms] [k] PageHuge 3.45% 3.45% dd [kernel.kallsyms] [k] __queue_work 3.45% 3.45% dd [kernel.kallsyms] [k] page_add_file_rmap 3.45% 3.45% dd [kernel.kallsyms] [k] page_counter_try_charge 3.45% 3.45% dd [kernel.kallsyms] [k] page_remove_rmap 3.45% 3.45% dd [kernel.kallsyms] [k] xas_start 3.45% 3.45% dd ld-2.28.so [.] 0x0000000000002a1c 3.45% 3.45% dd ld-2.28.so [.] 0x0000000000008b5c 3.45% 3.45% dd ld-2.28.so [.] 0x00000000000093cc Signed-off-by: Tan Xiaojun <tanxiaojun@huawei.com> Tested-by: James Clark <james.clark@arm.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Al Grant <al.grant@arm.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Jin Yao <yao.jin@linux.intel.com> 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> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Will Deacon <will@kernel.org> Cc: linux-arm-kernel@lists.infradead.org Link: http://lore.kernel.org/lkml/20200530122442.490-4-leo.yan@linaro.org Signed-off-by: James Clark <james.clark@arm.com> Signed-off-by: Leo Yan <leo.yan@linaro.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-06-01perf auxtrace: Add four itrace optionsTan Xiaojun
This patch is to add four options to synthesize events which are described as below: 'f': synthesize first level cache events 'm': synthesize last level cache events 't': synthesize TLB events 'a': synthesize remote access events This four options will be used by ARM SPE as their first consumer. Signed-off-by: Tan Xiaojun <tanxiaojun@huawei.com> Tested-by: James Clark <james.clark@arm.com> Acked-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Al Grant <al.grant@arm.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Jin Yao <yao.jin@linux.intel.com> 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> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Will Deacon <will@kernel.org> Cc: linux-arm-kernel@lists.infradead.org Link: http://lore.kernel.org/lkml/20200530122442.490-3-leo.yan@linaro.org Signed-off-by: James Clark <james.clark@arm.com> Signed-off-by: Leo Yan <leo.yan@linaro.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-06-01perf tools: Move arm-spe-pkt-decoder.h/c to the new dirTan Xiaojun
Create a new arm-spe-decoder directory for subsequent extensions and move arm-spe-pkt-decoder.h/c to this directory. No code changes. Signed-off-by: Tan Xiaojun <tanxiaojun@huawei.com> Tested-by: James Clark <james.clark@arm.com> Tested-by: Qi Liu <liuqi115@hisilicon.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Al Grant <al.grant@arm.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Jin Yao <yao.jin@linux.intel.com> 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> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Will Deacon <will@kernel.org> Cc: linux-arm-kernel@lists.infradead.org Link: http://lore.kernel.org/lkml/20200530122442.490-2-leo.yan@linaro.org Signed-off-by: James Clark <james.clark@arm.com> Signed-off-by: Leo Yan <leo.yan@linaro.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-06-01perf test: Initialize memory in dwarf-unwindIan Rogers
Avoid a false positive caused by assembly code in arch/x86. In tests, zero the perf_event to avoid uninitialized memory uses. Warnings were caught using clang with -fsanitize=memory. Signed-off-by: Ian Rogers <irogers@google.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Alexei Starovoitov <ast@kernel.org> Cc: Jakub Kicinski <kuba@kernel.org> 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: Quentin Monnet <quentin@isovalent.com> Cc: Stephane Eranian <eranian@google.com> Cc: clang-built-linux@googlegroups.com Link: http://lore.kernel.org/lkml/20200530082015.39162-4-irogers@google.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-06-01perf tests: Don't tail call optimize in unwind testIan Rogers
The tail call optimization can unexpectedly make the stack smaller and cause the test to fail. Signed-off-by: Ian Rogers <irogers@google.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Alexei Starovoitov <ast@kernel.org> Cc: clang-built-linux@googlegroups.com Cc: Jakub Kicinski <kuba@kernel.org> 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: Quentin Monnet <quentin@isovalent.com> Cc: Stephane Eranian <eranian@google.com> Link: http://lore.kernel.org/lkml/20200530082015.39162-3-irogers@google.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-06-01tools compiler.h: Add attribute to disable tail callsIan Rogers
Tail call optimizations can remove stack frames that are used in unwinding tests. Add an attribute that can be used to disable the tail call optimization. Tested on clang and GCC. Committer notes: Old versions of clang don't like that __attribute__((optimize)), so add an ifdef to make it go away. Signed-off-by: Ian Rogers <irogers@google.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Alexei Starovoitov <ast@kernel.org> Cc: clang-built-linux@googlegroups.com Cc: Jakub Kicinski <kuba@kernel.org> 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: Quentin Monnet <quentin@isovalent.com> Cc: Stephane Eranian <eranian@google.com> Link: http://lore.kernel.org/lkml/20200530082015.39162-2-irogers@google.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-06-01selftests/ftrace: Distinguish between hist and synthetic event checksTom Zanussi
With synthetic events now a separate config item as a result of 'tracing: Move synthetic events to a separate file', tests that use both need to explicitly check for hist trigger support rather than relying on hist triggers to pull in synthetic events. Add an additional hist trigger check to all the trigger tests that now require it, otherwise they'll fail if synthetic events but not hist triggers are enabled. Link: http://lkml.kernel.org/r/af36c539006ef2768114b4ed38e6b054f7c7a3bd.1590693308.git.zanussi@kernel.org Acked-by: Masami Hiramatsu <mhiramat@kernel.org> Signed-off-by: Tom Zanussi <zanussi@kernel.org> Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
2020-06-01KVM: selftests: update hyperv_cpuid with SynDBG testsVitaly Kuznetsov
Update tests to reflect new CPUID capabilities with SYNDBG. Check that we get the right number of entries and that 0x40000000.EAX always returns the correct max leaf. Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com> Signed-off-by: Jon Doron <arilou@gmail.com> Message-Id: <20200529134543.1127440-7-arilou@gmail.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2020-06-01KVM: selftests: VMX preemption timer migration testMakarand Sonare
When a nested VM with a VMX-preemption timer is migrated, verify that the nested VM and its parent VM observe the VMX-preemption timer exit close to the original expiration deadline. Signed-off-by: Makarand Sonare <makarandsonare@google.com> Reviewed-by: Jim Mattson <jmattson@google.com> Message-Id: <20200526215107.205814-3-makarandsonare@google.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2020-06-01selftests: kvm: fix smm test on SVMVitaly Kuznetsov
KVM_CAP_NESTED_STATE is now supported for AMD too but smm test acts like it is still Intel only. Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com> Message-Id: <20200529130407.57176-2-vkuznets@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2020-06-01selftests: kvm: add a SVM version of state-testPaolo Bonzini
The test is similar to the existing one for VMX, but simpler because we don't have to test shadow VMCS or vmptrld/vmptrst/vmclear. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2020-06-01selftests: kvm: introduce cpu_has_svm() checkVitaly Kuznetsov
Many tests will want to check if the CPU is Intel or AMD in guest code, add cpu_has_svm() and put it as static inline to svm_util.h. Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com> Message-Id: <20200529130407.57176-1-vkuznets@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2020-05-31Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/netDavid S. Miller
xdp_umem.c had overlapping changes between the 64-bit math fix for the calculation of npgs and the removal of the zerocopy memory type which got rid of the chunk_size_nohdr member. The mlx5 Kconfig conflict is a case where we just take the net-next copy of the Kconfig entry dependency as it takes on the ESWITCH dependency by one level of indirection which is what the 'net' conflicting change is trying to ensure. Signed-off-by: David S. Miller <davem@davemloft.net>
2020-05-31Merge tag 'x86-urgent-2020-05-31' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 fixes from Thomas Gleixner: "A pile of x86 fixes: - Prevent a memory leak in ioperm which was caused by the stupid assumption that the exit cleanup is always called for current, which is not the case when fork fails after taking a reference on the ioperm bitmap. - Fix an arithmething overflow in the DMA code on 32bit systems - Fill gaps in the xstate copy with defaults instead of leaving them uninitialized - Revert: "Make __X32_SYSCALL_BIT be unsigned long" as it turned out that existing user space fails to build" * tag 'x86-urgent-2020-05-31' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/ioperm: Prevent a memory leak when fork fails x86/dma: Fix max PFN arithmetic overflow on 32 bit systems copy_xstate_to_kernel(): don't leave parts of destination uninitialized x86/syscalls: Revert "x86/syscalls: Make __X32_SYSCALL_BIT be unsigned long"
2020-05-30selftests: forwarding: pedit_dsfield: Check counter valuePetr Machata
A missing stats_update callback was recently added to act_pedit. Now that iproute2 supports JSON dumping for pedit, extend the pedit_dsfield selftest with a check that would have caught the fact that the callback was missing. Signed-off-by: Petr Machata <petrm@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-05-30selftests: forwarding: mirror_lib: Use mausezahnPetr Machata
Using ping in tests is error-prone, because ping is too smart. On a flaky system (notably in a simulator), when packets don't come quickly enough, more pings are sent, and that throws off counters. Instead use mausezahn to generate ICMP echo request packets. That allows us to send them in quicker succession as well, because the reason the ping was made slow in the first place was to make the tests work on simulated systems. Signed-off-by: Petr Machata <petrm@mellanox.com> Signed-off-by: Ido Schimmel <idosch@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-05-30pstore/platform: Use backend name for console registrationKees Cook
If the pstore backend changes, there's no indication in the logs what the console is (it always says "pstore"). Instead, pass through the active backend's name. (Also adjust the selftest to match.) Link: https://lore.kernel.org/lkml/20200510202436.63222-5-keescook@chromium.org/ Link: https://lore.kernel.org/lkml/20200526135429.GQ12456@shao2-debian Signed-off-by: Kees Cook <keescook@chromium.org>
2020-05-30Merge remote-tracking branch 'spi/for-5.8' into spi-nextMark Brown
2020-05-29Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpfDavid S. Miller
Alexei Starovoitov says: ==================== pull-request: bpf 2020-05-29 The following pull-request contains BPF updates for your *net* tree. We've added 6 non-merge commits during the last 7 day(s) which contain a total of 4 files changed, 55 insertions(+), 34 deletions(-). The main changes are: 1) minor verifier fix for fmod_ret progs, from Alexei. 2) af_xdp overflow check, from Bjorn. 3) minor verifier fix for 32bit assignment, from John. 4) powerpc has non-overlapping addr space, from Petr. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
2020-05-29bpf, selftests: Add a verifier test for assigning 32bit reg states to 64bit onesJohn Fastabend
Added a verifier test for assigning 32bit reg states to 64bit where 32bit reg holds a constant value of 0. Without previous kernel verifier.c fix, the test in this patch will fail. Signed-off-by: Yonghong Song <yhs@fb.com> Signed-off-by: John Fastabend <john.fastabend@gmail.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Link: https://lore.kernel.org/bpf/159077335867.6014.2075350327073125374.stgit@john-Precision-5820-Tower
2020-05-29bpf, selftests: Verifier bounds tests need to be updatedJohn Fastabend
After previous fix for zero extension test_verifier tests #65 and #66 now fail. Before the fix we can see the alu32 mov op at insn 10 10: R0_w=map_value(id=0,off=0,ks=8,vs=8,imm=0) R1_w=invP(id=0, smin_value=4294967168,smax_value=4294967423, umin_value=4294967168,umax_value=4294967423, var_off=(0x0; 0x1ffffffff), s32_min_value=-2147483648,s32_max_value=2147483647, u32_min_value=0,u32_max_value=-1) R10=fp0 fp-8_w=mmmmmmmm 10: (bc) w1 = w1 11: R0_w=map_value(id=0,off=0,ks=8,vs=8,imm=0) R1_w=invP(id=0, smin_value=0,smax_value=2147483647, umin_value=0,umax_value=4294967295, var_off=(0x0; 0xffffffff), s32_min_value=-2147483648,s32_max_value=2147483647, u32_min_value=0,u32_max_value=-1) R10=fp0 fp-8_w=mmmmmmmm After the fix at insn 10 because we have 's32_min_value < 0' the following step 11 now has 'smax_value=U32_MAX' where before we pulled the s32_max_value bound into the smax_value as seen above in 11 with smax_value=2147483647. 10: R0_w=map_value(id=0,off=0,ks=8,vs=8,imm=0) R1_w=inv(id=0, smin_value=4294967168,smax_value=4294967423, umin_value=4294967168,umax_value=4294967423, var_off=(0x0; 0x1ffffffff), s32_min_value=-2147483648, s32_max_value=2147483647, u32_min_value=0,u32_max_value=-1) R10=fp0 fp-8_w=mmmmmmmm 10: (bc) w1 = w1 11: R0_w=map_value(id=0,off=0,ks=8,vs=8,imm=0) R1_w=inv(id=0, smin_value=0,smax_value=4294967295, umin_value=0,umax_value=4294967295, var_off=(0x0; 0xffffffff), s32_min_value=-2147483648, s32_max_value=2147483647, u32_min_value=0, u32_max_value=-1) R10=fp0 fp-8_w=mmmmmmmm The fall out of this is by the time we get to the failing instruction at step 14 where previously we had the following: 14: R0_w=map_value(id=0,off=0,ks=8,vs=8,imm=0) R1_w=inv(id=0, smin_value=72057594021150720,smax_value=72057594029539328, umin_value=72057594021150720,umax_value=72057594029539328, var_off=(0xffffffff000000; 0xffffff), s32_min_value=-16777216,s32_max_value=-1, u32_min_value=-16777216,u32_max_value=-1) R10=fp0 fp-8_w=mmmmmmmm 14: (0f) r0 += r1 We now have, 14: R0_w=map_value(id=0,off=0,ks=8,vs=8,imm=0) R1_w=inv(id=0, smin_value=0,smax_value=72057594037927935, umin_value=0,umax_value=72057594037927935, var_off=(0x0; 0xffffffffffffff), s32_min_value=-2147483648,s32_max_value=2147483647, u32_min_value=0,u32_max_value=-1) R10=fp0 fp-8_w=mmmmmmmm 14: (0f) r0 += r1 In the original step 14 'smin_value=72057594021150720' this trips the logic in the verifier function check_reg_sane_offset(), if (smin >= BPF_MAX_VAR_OFF || smin <= -BPF_MAX_VAR_OFF) { verbose(env, "value %lld makes %s pointer be out of bounds\n", smin, reg_type_str[type]); return false; } Specifically, the 'smin <= -BPF_MAX_VAR_OFF' check. But with the fix at step 14 we have bounds 'smin_value=0' so the above check is not tripped because BPF_MAX_VAR_OFF=1<<29. We have a smin_value=0 here because at step 10 the smaller smin_value=0 means the subtractions at steps 11 and 12 bring the smin_value negative. 11: (17) r1 -= 2147483584 12: (17) r1 -= 2147483584 13: (77) r1 >>= 8 Then the shift clears the top bit and smin_value is set to 0. Note we still have the smax_value in the fixed code so any reads will fail. An alternative would be to have reg_sane_check() do both smin and smax value tests. To fix the test we can omit the 'r1 >>=8' at line 13. This will change the err string, but keeps the intention of the test as suggseted by the title, "check after truncation of boundary-crossing range". If the verifier logic changes a different value is likely to be thrown in the error or the error will no longer be thrown forcing this test to be examined. With this change we see the new state at step 13. 13: R0_w=map_value(id=0,off=0,ks=8,vs=8,imm=0) R1_w=invP(id=0, smin_value=-4294967168,smax_value=127, umin_value=0,umax_value=18446744073709551615, s32_min_value=-2147483648,s32_max_value=2147483647, u32_min_value=0,u32_max_value=-1) R10=fp0 fp-8_w=mmmmmmmm Giving the expected out of bounds error, "value -4294967168 makes map_value pointer be out of bounds" However, for unpriv case we see a different error now because of the mixed signed bounds pointer arithmatic. This seems OK so I've only added the unpriv_errstr for this. Another optino may have been to do addition on r1 instead of subtraction but I favor the approach above slightly. Signed-off-by: John Fastabend <john.fastabend@gmail.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Acked-by: Yonghong Song <yhs@fb.com> Link: https://lore.kernel.org/bpf/159077333942.6014.14004320043595756079.stgit@john-Precision-5820-Tower
2020-05-29perf build: Add a LIBPFM4=1 build test entryArnaldo Carvalho de Melo
So that when one runs: $ make -C tools/perf build-test We make sure that recent changes don't break that opt-in build. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Alexei Starovoitov <ast@kernel.org> Cc: Alexey Budankov <alexey.budankov@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Andrii Nakryiko <andriin@fb.com> Cc: Daniel Borkmann <daniel@iogearbox.net> Cc: Florian Fainelli <f.fainelli@gmail.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Ian Rogers <irogers@google.com> Cc: Igor Lubashev <ilubashe@akamai.com> Cc: Jin Yao <yao.jin@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Jiwei Sun <jiwei.sun@windriver.com> Cc: John Garry <john.garry@huawei.com> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Leo Yan <leo.yan@linaro.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Martin KaFai Lau <kafai@fb.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Yonghong Song <yhs@fb.com> Cc: yuzhoujian <yuzhoujian@didichuxing.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-05-29perf tools: Add optional support for libpfm4Stephane Eranian
This patch links perf with the libpfm4 library if it is available and LIBPFM4 is passed to the build. The libpfm4 library contains hardware event tables for all processors supported by perf_events. It is a helper library that helps convert from a symbolic event name to the event encoding required by the underlying kernel interface. This library is open-source and available from: http://perfmon2.sf.net. With this patch, it is possible to specify full hardware events by name. Hardware filters are also supported. Events must be specified via the --pfm-events and not -e option. Both options are active at the same time and it is possible to mix and match: $ perf stat --pfm-events inst_retired:any_p:c=1:i -e cycles .... One needs to explicitely ask for its inclusion by using the LIBPFM4 make command line option, ie its opt-in rather than opt-out of feature detection and build support. Signed-off-by: Stephane Eranian <eranian@google.com> Reviewed-by: Ian Rogers <irogers@google.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Alexei Starovoitov <ast@kernel.org> Cc: Alexey Budankov <alexey.budankov@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Andrii Nakryiko <andriin@fb.com> Cc: Daniel Borkmann <daniel@iogearbox.net> Cc: Florian Fainelli <f.fainelli@gmail.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Igor Lubashev <ilubashe@akamai.com> Cc: Jin Yao <yao.jin@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Jiwei Sun <jiwei.sun@windriver.com> Cc: John Garry <john.garry@huawei.com> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Leo Yan <leo.yan@linaro.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Martin KaFai Lau <kafai@fb.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Yonghong Song <yhs@fb.com> Cc: bpf@vger.kernel.org Cc: netdev@vger.kernel.org Cc: yuzhoujian <yuzhoujian@didichuxing.com> Link: http://lore.kernel.org/lkml/20200505182943.218248-2-irogers@google.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-05-29perf tools: Correct license on jsmn JSON parserEd Maste
This header is part of the jsmn JSON parser, introduced in 867a979a83. Correct the SPDX tag to indicate that it is under the MIT license. Signed-off-by: Ed Maste <emaste@freebsd.org> Acked-by: Andi Kleen <ak@linux.intel.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: http://lore.kernel.org/lkml/20200528170858.48457-1-emaste@freefall.freebsd.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-05-29perf jit: Fix inaccurate DWARF line tableNick Gasson
Fix an issue where addresses in the DWARF line table are offset by -0x40 (GEN_ELF_TEXT_OFFSET). This can be seen with `objdump -S` on the ELF files after perf inject. Committer notes: Ian added this in his Acked-by reply: --- Without too much knowledge this looks good to me. The original code came from oprofile's jit support: https://sourceforge.net/p/oprofile/oprofile/ci/master/tree/opjitconv/debug_line.c#l325 --- Signed-off-by: Nick Gasson <nick.gasson@arm.com> Acked-by: Ian Rogers <irogers@google.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lore.kernel.org/lkml/20200528051916.6722-1-nick.gasson@arm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-05-29perf jvmti: Remove redundant jitdump line table entriesNick Gasson
For each PC/BCI pair in the JVMTI compiler inlining record table, the jitdump plugin emits debug line table entries for every source line in the method preceding that BCI. Instead only emit one source line per PC/BCI pair. Reported by Ian Rogers. This reduces the .dump size for SPECjbb from ~230MB to ~40MB. Signed-off-by: Nick Gasson <nick.gasson@arm.com> Acked-by: Ian Rogers <irogers@google.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lore.kernel.org/lkml/20200528054049.13662-1-nick.gasson@arm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-05-29perf build: Add NO_SDT=1 to the default set of build testsArnaldo Carvalho de Melo
We forgot to add it, so one would have to explicitely ask for it to be run, fix that by adding it to the set of tests that are performed by default when one does: $ make -C tools/perf build-test It was being exercised only in the make_minimal test, this patch makes it be tested in isolation, i.e. disabling only this feature. Fixes: e26e63be64a1 ("perf build: Add sdt feature detection") Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-05-29perf build: Add NO_LIBCRYPTO=1 to the default set of build testsArnaldo Carvalho de Melo
We forgot to add it, so one would have to explicitely ask for it to be run, fix that by adding it to the set of tests that are performed by default when one does: $ make -C tools/perf build-test It was being exercised only in the make_minimal test, this patch makes it be tested in isolation, i.e. disabling only this feature. Fixes: 8ee4646038e4 ("perf build: Add libcrypto feature detection") Cc: Stephane Eranian <eranian@google.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-05-29perf build: Add NO_SYSCALL_TABLE=1 to the build testsArnaldo Carvalho de Melo
So that we make sure that even on x86-64 and other architectures where that is the default method we test build the fallback to libaudit that other architectures use. I.e. now this line got added to: $ make -C tools/perf build-test <SNIP> make_no_syscall_tbl_O: cd . && make NO_SYSCALL_TABLE=1 FEATURES_DUMP=/home/acme/git/perf/tools/perf/BUILD_TEST_FEATURE_DUMP -j12 O=/tmp/tmp.W0HtKR1mfr DESTDIR=/tmp/tmp.lNezgCVPzW <SNIP> $ Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-05-29perf build: Remove libaudit from the default feature checksArnaldo Carvalho de Melo
Ingo reported that the libaudit was always appearing as OFF: Auto-detecting system features: ... dwarf: [ on ] ... dwarf_getlocations: [ on ] ... glibc: [ on ] ... gtk2: [ on ] ... libaudit: [ OFF ] And everything seemed to work, i.e. we were checking for a feature that we don't use, causing confusion for people building perf, so work to remove that nuisance while making sure that it works when an arch doesn't provide the alternative method to generate the syscall id/name conversion tables. Longer explanation of the new modus operandi: $ make -C tools/perf O=/tmp/build/perf NO_SYSCALL_TABLE=1 <SNIP> Auto-detecting system features: ... dwarf: [ on ] ... dwarf_getlocations: [ on ] ... glibc: [ on ] ... gtk2: [ on ] ... libbfd: [ on ] ... libcap: [ on ] ... libelf: [ on ] ... libnuma: [ on ] ... numa_num_possible_cpus: [ on ] ... libperl: [ on ] ... libpython: [ on ] ... libcrypto: [ on ] ... libunwind: [ on ] ... libdw-dwarf-unwind: [ on ] ... zlib: [ on ] ... lzma: [ on ] ... get_cpuid: [ on ] ... bpf: [ on ] ... libaio: [ on ] ... libzstd: [ on ] ... disassembler-four-args: [ on ] Makefile.config:665: No libaudit.h found, disables 'trace' tool, please install audit-libs-devel or libaudit-dev GEN /tmp/build/perf/common-cmds.h MKDIR /tmp/build/perf/fd/ MKDIR /tmp/build/perf/fs/ <SNIP> $ The libaudit test is forced and it fails when audit-libs-devel isn't available: $ cat /tmp/build/perf/feature/test-libaudit.make.output test-libaudit.c:2:10: fatal error: libaudit.h: No such file or directory 2 | #include <libaudit.h> | ^~~~~~~~~~~~ compilation terminated. $ If we install audit-libs-devel and rebuild it continues not to be shown as OFF in the main auto-detection summary, but again gets tested and this time: $ rpm -q audit-libs-devel audit-libs-devel-3.0-0.15.20191104git1c2f876.fc31.x86_64 $ The make output for the feature detection comes clean: $ cat /tmp/build/perf/feature/test-libaudit.make.output And the feature detection binary is successfully built and is dynamicly linked with libaudit: $ ldd /tmp/build/perf/feature/test-libaudit.bin | grep audit libaudit.so.1 => /lib64/libaudit.so.1 (0x00007f5bf5177000) $ As well as the resulting perf binary: $ ldd /tmp/build/perf/perf | grep audit libaudit.so.1 => /lib64/libaudit.so.1 (0x00007fad511c7000) $ And 'perf trace' works using the libaudit method: $ sudo /tmp/build/perf/perf trace -e nanosleep sleep 1 0.000 (1000.067 ms): sleep/281872 nanosleep(rqtp: 0x7ffedbbe69d0) = 0 $ If we leave audit-libs-devel installed but don't disable the use of the best method, the one using SYSCALL_TABLE, the default for architectures that provide the script to build the syscall id/name mapping using the .tbl files copied from the kernel sources, we get: $ rm -rf /tmp/build/perf ; mkdir -p /tmp/build/perf $ make -C tools/perf O=/tmp/build/perf Auto-detecting system features: ... dwarf: [ on ] ... dwarf_getlocations: [ on ] ... glibc: [ on ] ... gtk2: [ on ] ... libbfd: [ on ] ... libcap: [ on ] ... libelf: [ on ] ... libnuma: [ on ] ... numa_num_possible_cpus: [ on ] ... libperl: [ on ] ... libpython: [ on ] ... libcrypto: [ on ] ... libunwind: [ on ] ... libdw-dwarf-unwind: [ on ] ... zlib: [ on ] ... lzma: [ on ] ... get_cpuid: [ on ] ... bpf: [ on ] ... libaio: [ on ] ... libzstd: [ on ] ... disassembler-four-args: [ on ] GEN /tmp/build/perf/common-cmds.h <SNIP> $ Again, no mention of libaudit being on or OFF and: $ cat /tmp/build/perf/feature/test-libaudit.make.output cat: /tmp/build/perf/feature/test-libaudit.make.output: No such file or directory $ We didn't even bother checking for its availability, slightly speeding up the build process and: $ ldd /tmp/build/perf/perf | grep libaudit $ We don't link with it, also: $ sudo /tmp/build/perf/perf trace -e nanosleep sleep 1 0.000 (1000.053 ms): sleep/299125 nanosleep(rqtp: 0x7ffc24611b50) = 0 $ And globs become available: $ sudo /tmp/build/perf/perf trace -e *sleep sleep 1 0.000 (1000.072 ms): sleep/299136 nanosleep(rqtp: 0x7ffe7a3c4ff0) = 0 $ Reported-by: Ingo Molnar <mingo@kernel.org> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-05-29perf trace: Grow the syscall table as needed when using libauditArnaldo Carvalho de Melo
The audit-libs API doesn't provide a way to figure out what is the syscall with the greatest number/id, take that into account when using that method to go on growing the syscall table as we the syscalls go on appearing on the radar. With this the libaudit based method is back working, i.e. when building with: $ make NO_SYSCALL_TABLE=1 O=/tmp/build/perf -C tools/perf install-bin <SNIP> Auto-detecting system features: <SNIP> ... libaudit: [ on ] ... libbfd: [ on ] ... libcap: [ on ] <SNIP> $ ldd ~/bin/perf | grep audit libaudit.so.1 => /lib64/libaudit.so.1 (0x00007faef22df000) $ perf trace is back working, which makes it functional in arches other than x86_64, powerpc, arm64 and s390, that provides these generators: $ find tools/perf/arch/ -name "*syscalltbl*" tools/perf/arch/x86/entry/syscalls/syscalltbl.sh tools/perf/arch/arm64/entry/syscalls/mksyscalltbl tools/perf/arch/s390/entry/syscalls/mksyscalltbl tools/perf/arch/powerpc/entry/syscalls/mksyscalltbl $ Example output forcing the libaudit method on x86_64: # perf trace -e file,nanosleep sleep 0.001 ? ( ): sleep/859090 ... [continued]: execve()) = 0 0.045 ( 0.005 ms): sleep/859090 access(filename: 0x8733e850, mode: R) = -1 ENOENT (No such file or directory) 0.055 ( 0.005 ms): sleep/859090 openat(dfd: CWD, filename: 0x8733ba29, flags: RDONLY|CLOEXEC) = 3 0.079 ( 0.005 ms): sleep/859090 openat(dfd: CWD, filename: 0x87345d20, flags: RDONLY|CLOEXEC) = 3 0.085 ( 0.002 ms): sleep/859090 read(fd: 3, buf: 0x7ffd9d483f58, count: 832) = 832 0.090 ( 0.002 ms): sleep/859090 read(fd: 3, buf: 0x7ffd9d483b50, count: 784) = 784 0.094 ( 0.002 ms): sleep/859090 read(fd: 3, buf: 0x7ffd9d483b20, count: 32) = 32 0.098 ( 0.002 ms): sleep/859090 read(fd: 3, buf: 0x7ffd9d483ad0, count: 68) = 68 0.109 ( 0.002 ms): sleep/859090 read(fd: 3, buf: 0x7ffd9d483a50, count: 784) = 784 0.113 ( 0.002 ms): sleep/859090 read(fd: 3, buf: 0x7ffd9d483730, count: 32) = 32 0.117 ( 0.002 ms): sleep/859090 read(fd: 3, buf: 0x7ffd9d483710, count: 68) = 68 0.320 ( 0.008 ms): sleep/859090 openat(dfd: CWD, filename: 0x872c3660, flags: RDONLY|CLOEXEC) = 3 0.372 ( 1.057 ms): sleep/859090 nanosleep(rqtp: 0x7ffd9d484ac0) = 0 # There are still some limitations when using the libaudit method, that will be fixed at some point, i.e., this works with the mksyscalltbl method but not with libaudit's: # perf trace -e file,*sleep sleep 0.001 event syntax error: '*sleep' \___ parser error Run 'perf list' for a list of valid events Usage: perf trace [<options>] [<command>] or: perf trace [<options>] -- <command> [<options>] or: perf trace record [<options>] [<command>] or: perf trace record [<options>] -- <command> [<options>] -e, --event <event> event/syscall selector. use 'perf list' to list available events # Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-05-29perf trace: Use zalloc() to make sure all fields are zeroed in the ↵Arnaldo Carvalho de Melo
syscalltbl constructor In the past this wasn't needed as the libaudit based code would use just one field, and the alternative constructor would fill in all the fields, but now that even when using the libaudit based method we need the other fields, switch to zalloc() to make sure the other fields are zeroed at instantiation time. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-05-29perf trace: Remove union from syscalltbl, all the fields are neededArnaldo Carvalho de Melo
When we moved to a syscalltbl generated from the kernel syscall tables (arch/..../syscall*.tbl) the idea was to either use it, when having the generator (e.g. tools/perf/arch/x86/entry/syscalls/syscalltbl.sh), or falling back to the previous audit-libs based way of mapping syscall ids to strings and the other way around. At first we just needed the audit_detect_machine() return to then use it to the str->id/id->str, or the other fields for the now used by default in the most well developed arches method of using the syscall table generator. The problem is that then the libaudit code fell into disrepair, and architectures where it is the method used are not working. Now, with NO_SYSCALL_TABLE=1 being possible to pass on the make command line we can automate the testing of that method even on x86-64, arm64, etc. And doing it I noted that we actually use fields in both entries in the union, oops, so ditch the union, as we need all those fields at the same time. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-05-29perf build: Allow explicitely disabling the NO_SYSCALL_TABLE variableArnaldo Carvalho de Melo
This is useful to see if, on x86, the legacy libaudit still works, as it is used in architectures that don't have the SYSCALL_TABLE logic and we want to have it tested in 'make -C tools/perf/ build-test'. E.g.: Without having audit-libs-devel installed: $ make NO_SYSCALL_TABLE=1 O=/tmp/build/perf -C tools/perf install-bin make: Entering directory '/home/acme/git/perf/tools/perf' BUILD: Doing 'make -j12' parallel build <SNIP> Auto-detecting system features: <SNIP> ... libaudit: [ OFF ] ... libbfd: [ on ] ... libcap: [ on ] <SNIP> Makefile.config:664: No libaudit.h found, disables 'trace' tool, please install audit-libs-devel or libaudit-dev <SNIP> After installing it: $ rm -rf /tmp/build/perf ; mkdir -p /tmp/build/perf $ time make NO_SYSCALL_TABLE=1 O=/tmp/build/perf -C tools/perf install-bin ; perf test python make: Entering directory '/home/acme/git/perf/tools/perf' BUILD: Doing 'make -j12' parallel build HOSTCC /tmp/build/perf/fixdep.o HOSTLD /tmp/build/perf/fixdep-in.o LINK /tmp/build/perf/fixdep Warning: Kernel ABI header at 'tools/arch/x86/include/asm/msr-index.h' differs from latest version at 'arch/x86/include/asm/msr-index.h' diff -u tools/arch/x86/include/asm/msr-index.h arch/x86/include/asm/msr-index.h Warning: Kernel ABI header at 'tools/perf/util/hashmap.h' differs from latest version at 'tools/lib/bpf/hashmap.h' diff -u tools/perf/util/hashmap.h tools/lib/bpf/hashmap.h Warning: Kernel ABI header at 'tools/perf/util/hashmap.c' differs from latest version at 'tools/lib/bpf/hashmap.c' diff -u tools/perf/util/hashmap.c tools/lib/bpf/hashmap.c Auto-detecting system features: <SNIP> ... libaudit: [ on ] ... libbfd: [ on ] ... libcap: [ on ] <SNIP> $ ldd ~/bin/perf | grep audit libaudit.so.1 => /lib64/libaudit.so.1 (0x00007fc18978e000) $ Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Link: http://lore.kernel.org/lkml/20200529155552.463-3-acme@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-05-29perf build: Group the NO_SYSCALL_TABLE logicArnaldo Carvalho de Melo
To help in allowing to disable it from the make command line. Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Namhyung Kim <namhyung@kernel.org> Link: http://lore.kernel.org/lkml/20200529155552.463-2-acme@kernel.org [ Fixed the logic for the filter part, it should be ifeq, not ifneq ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-05-28selftests: Add torture tests to nexthop testsDavid Ahern
Add Nik's torture tests as a new set to stress the replace and cleanup paths. Torture test created by Nikolay Aleksandrov and then I adapted to selftest and added IPv6 version. Signed-off-by: David Ahern <dsahern@kernel.org> Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-05-28selftests/ftrace: Return unsupported if no error_log fileMasami Hiramatsu
Check whether error_log file exists in tracing/error_log testcase and return UNSUPPORTED if no error_log file. This can happen if we run the ftracetest on the older stable kernel. Fixes: 4eab1cc461a6 ("selftests/ftrace: Add tracing/error_log testcase") Cc: stable@vger.kernel.org Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
2020-05-28selftests/ftrace: Use printf for backslash included commandMasami Hiramatsu
Since the built-in echo has different behavior in POSIX shell (dash) and bash, kprobe_syntax_errors.tc can fail on dash which interpret backslash escape automatically. To fix this issue, we explicitly use printf "%s" (not interpret backslash escapes) if the command string can include backslash. Reported-by: Liu Yiding <yidingx.liu@intel.com> Suggested-by: Xiao Yang <yangx.jy@cn.fujitsu.com> Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
2020-05-28perf intel-pt: Refine kernel decoding only warning messageAdrian Hunter
Stop the message displaying when user space is not being traced. Example: Prerequisites: sudo setcap "cap_sys_rawio,cap_sys_admin,cap_sys_ptrace,cap_syslog,cap_ipc_lock=ep" ~/bin/perf sudo chmod +r /proc/kcore Before: $ perf record --no-switch-events --kcore -a -e intel_pt//k -- sleep 0.001 Warning: Intel Processor Trace decoding will not be possible except for kernel tracing! [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.838 MB perf.data ] After: $ perf record --no-switch-events --kcore -a -e intel_pt//k -- sleep 0.001 [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 1.068 MB perf.data ] $ sudo chmod go-r /proc/kcore $ sudo setcap -r ~/bin/perf Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Link: http://lore.kernel.org/lkml/20200528120859.21604-2-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-05-28perf record: Respect --no-switch-eventsAdrian Hunter
Context switch events are added automatically by Intel PT and Coresight. Make it possible to suppress them. That is useful for tracing the scheduler without the disturbance that the switch event processing creates. Example: Prerequisites: $ which perf ~/bin/perf $ sudo setcap "cap_sys_rawio,cap_sys_admin,cap_sys_ptrace,cap_syslog,cap_ipc_lock=ep" ~/bin/perf $ sudo chmod +r /proc/kcore Before: $ perf record --no-switch-events --kcore -a -e intel_pt//k -- sleep 0.001 [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.938 MB perf.data ] $ perf script -D | grep PERF_RECORD_SWITCH | wc -l 572 After: $ perf record --no-switch-events --kcore -a -e intel_pt//k -- sleep 0.001 Warning: Intel Processor Trace decoding will not be possible except for kernel tracing! [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.838 MB perf.data ] $ perf script -D | grep PERF_RECORD_SWITCH | wc -l 0 $ sudo chmod go-r /proc/kcore $ sudo setcap -r ~/bin/perf Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Link: http://lore.kernel.org/lkml/20200528120859.21604-1-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
generated by cgit v1.2.3-70-g09d2 (git 2.48.1) at 2025-07-24 20:28:01 +0000