kernel/linux.git/tools/perf/arch, branch v5.9.2

all arch: remove system call sys_sysctl

2020-08-15T02:56:56+00:00

Since commit 61a47c1ad3a4dc ("sysctl: Remove the sysctl system call"), sys_sysctl is actually unavailable: any input can only return an error. We have been warning about people using the sysctl system call for years and believe there are no more users. Even if there are users of this interface if they have not complained or fixed their code by now they probably are not going to, so there is no point in warning them any longer. So completely remove sys_sysctl on all architectures. [nixiaoming@huawei.com: s390: fix build error for sys_call_table_emu] Link: http://lkml.kernel.org/r/20200618141426.16884-1-nixiaoming@huawei.com Signed-off-by: Xiaoming Ni Signed-off-by: Andrew Morton Acked-by: Will Deacon [arm/arm64] Acked-by: "Eric W. Biederman" Cc: Aleksa Sarai Cc: Alexander Shishkin Cc: Al Viro Cc: Andi Kleen Cc: Andrew Morton Cc: Andy Lutomirski Cc: Arnaldo Carvalho de Melo Cc: Arnd Bergmann Cc: Benjamin Herrenschmidt Cc: Bin Meng Cc: Borislav Petkov Cc: Brian Gerst Cc: Catalin Marinas Cc: chenzefeng Cc: Christian Borntraeger Cc: Christian Brauner Cc: Chris Zankel Cc: David Howells Cc: David S. Miller Cc: Diego Elio Pettenò Cc: Dmitry Vyukov Cc: Dominik Brodowski Cc: Fenghua Yu Cc: Geert Uytterhoeven Cc: Heiko Carstens Cc: Helge Deller Cc: "H. Peter Anvin" Cc: Ingo Molnar Cc: Iurii Zaikin Cc: Ivan Kokshaysky Cc: James Bottomley Cc: Jens Axboe Cc: Jiri Olsa Cc: Kars de Jong Cc: Kees Cook Cc: Krzysztof Kozlowski Cc: Luis Chamberlain Cc: Marco Elver Cc: Mark Rutland Cc: Martin K. Petersen Cc: Masahiro Yamada Cc: Matt Turner Cc: Max Filippov Cc: Michael Ellerman Cc: Michal Simek Cc: Miklos Szeredi Cc: Minchan Kim Cc: Namhyung Kim Cc: Naveen N. Rao Cc: Nick Piggin Cc: Oleg Nesterov Cc: Olof Johansson Cc: Paul Burton Cc: "Paul E. McKenney" Cc: Paul Mackerras Cc: Peter Zijlstra (Intel) Cc: Randy Dunlap Cc: Ravi Bangoria Cc: Richard Henderson Cc: Rich Felker Cc: Russell King Cc: Sami Tolvanen Cc: Sargun Dhillon Cc: Stephen Rothwell Cc: Sudeep Holla Cc: Sven Schnelle Cc: Thiago Jung Bauermann Cc: Thomas Bogendoerfer Cc: Thomas Gleixner Cc: Tony Luck Cc: Vasily Gorbik Cc: Vlastimil Babka Cc: Yoshinori Sato Cc: Zhou Yanjie Link: http://lkml.kernel.org/r/20200616030734.87257-1-nixiaoming@huawei.com Signed-off-by: Linus Torvalds

Merge tag 'perf-tools-2020-08-10' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux

2020-08-11T02:21:38+00:00

Pull perf tools updates from Arnaldo Carvalho de Melo: "New features: - Introduce controlling how 'perf stat' and 'perf record' works via a control file descriptor, allowing starting with events configured but disabled until commands are received via the control file descriptor. This allows, for instance for tools such as Intel VTune to make further use of perf as its Linux platform driver. - Improve 'perf record' to to register in a perf.data file header the clockid used to help later correlate things like syslog files and perf events recorded. - Add basic syscall and find_next_bit benchmarks to 'perf bench'. - Allow using computed metrics in calculating other metrics. For instance: { .metric_expr = "l2_rqsts.demand_data_rd_hit + l2_rqsts.pf_hit + l2_rqsts.rfo_hit", .metric_name = "DCache_L2_All_Hits", }, { .metric_expr = "max(l2_rqsts.all_demand_data_rd - l2_rqsts.demand_data_rd_hit, 0) + l2_rqsts.pf_miss + l2_rqsts.rfo_miss", .metric_name = "DCache_L2_All_Miss", }, { .metric_expr = "dcache_l2_all_hits + dcache_l2_all_miss", .metric_name = "DCache_L2_All", } - Add suport for 'd_ratio', '>' and '<' operators to the expression resolver used in calculating metrics in 'perf stat'. Support for new kernel features: - Support TEXT_POKE and KSYMBOL_TYPE_OOL perf metadata events to cope with things like ftrace, trampolines, i.e. changes in the kernel text that gets in the way of properly decoding Intel PT hardware traces, for instance. Intel PT: - Add various knobs to reduce the volume of Intel PT traces by reducing the level of details such as decoding just some types of packets (e.g., FUP/TIP, PSB+), also filtering by time range. - Add new itrace options (log flags to the 'd' option, error flags to the 'e' one, etc), controlling how Intel PT is transformed into perf events, document some missing options (e.g., how to synthesize callchains). BPF: - Properly report BPF errors when parsing events. - Do not setup side-band events if LIBBPF is not linked, fixing a segfault. Libraries: - Improvements to the libtraceevent plugin mechanism. - Improve libtracevent support for KVM trace events SVM exit reasons. - Add a libtracevent plugins for decoding syscalls/sys_enter_futex and for tlb_flush. - Ensure sample_period is set libpfm4 events in 'perf test'. - Fixup libperf namespacing, to make sure what is in libperf has the perf_ namespace while what is now only in tools/perf/ doesn't use that prefix. Arch specific: - Improve the testing of vendor events and metrics in 'perf test'. - Allow no ARM CoreSight hardware tracer sink to be specified on command line. - Fix arm_spe_x recording when mixed with other perf events. - Add s390 idle functions 'psw_idle' and 'psw_idle_exit' to list of idle symbols. - List kernel supplied event aliases for arm64 in 'perf list'. - Add support for extended register capability in PowerPC 9 and 10. - Added nest IMC power9 metric events. Miscellaneous: - No need to setup sample_regs_intr/sample_regs_user for dummy events. - Update various copies of kernel headers, some causing perf to handle new syscalls, MSRs, etc. - Improve usage of flex and yacc, enabling warnings and addressing the fallout. - Add missing '--output' option to 'perf kmem' so that it can pass it along to 'perf record'. - 'perf probe' fixes related to adding multiple probes on the same address for the same event. - Make 'perf probe' warn if the target function is a GNU indirect function. - Remove //anon mmap events from 'perf inject jit' to fix supporting both using ELF files for generated functions and the perf-PID.map approaches" * tag 'perf-tools-2020-08-10' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux: (144 commits) perf record: Skip side-band event setup if HAVE_LIBBPF_SUPPORT is not set perf tools powerpc: Add support for extended regs in power10 perf tools powerpc: Add support for extended register capability tools headers UAPI: Sync drm/i915_drm.h with the kernel sources tools arch x86: Sync asm/cpufeatures.h with the kernel sources tools arch x86: Sync the msr-index.h copy with the kernel sources tools headers UAPI: update linux/in.h copy tools headers API: Update close_range affected files perf script: Add 'tod' field to display time of day perf script: Change the 'enum perf_output_field' enumerators to be 64 bits perf data: Add support to store time of day in CTF data conversion perf tools: Move clockid_res_ns under clock struct perf header: Store clock references for -k/--clockid option perf tools: Add clockid_name function perf clockid: Move parse_clockid() to new clockid object tools lib traceevent: Handle possible strdup() error in tep_add_plugin_path() API libtraceevent: Fixed description of tep_add_plugin_path() API libtraceevent: Fixed type in PRINT_FMT_STING libtraceevent: Fixed broken indentation in parse_ip4_print_args() libtraceevent: Improve error handling of tep_plugin_add_option() API ...

Merge tag 'powerpc-5.9-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux

2020-08-07T17:33:50+00:00

Pull powerpc updates from Michael Ellerman: - Add support for (optionally) using queued spinlocks & rwlocks. - Support for a new faster system call ABI using the scv instruction on Power9 or later. - Drop support for the PROT_SAO mmap/mprotect flag as it will be unsupported on Power10 and future processors, leaving us with no way to implement the functionality it requests. This risks breaking userspace, though we believe it is unused in practice. - A bug fix for, and then the removal of, our custom stack expansion checking. We now allow stack expansion up to the rlimit, like other architectures. - Remove the remnants of our (previously disabled) topology update code, which tried to react to NUMA layout changes on virtualised systems, but was prone to crashes and other problems. - Add PMU support for Power10 CPUs. - A change to our signal trampoline so that we don't unbalance the link stack (branch return predictor) in the signal delivery path. - Lots of other cleanups, refactorings, smaller features and so on as usual. Thanks to: Abhishek Goel, Alastair D'Silva, Alexander A. Klimov, Alexey Kardashevskiy, Alistair Popple, Andrew Donnellan, Aneesh Kumar K.V, Anju T Sudhakar, Anton Blanchard, Arnd Bergmann, Athira Rajeev, Balamuruhan S, Bharata B Rao, Bill Wendling, Bin Meng, Cédric Le Goater, Chris Packham, Christophe Leroy, Christoph Hellwig, Daniel Axtens, Dan Williams, David Lamparter, Desnes A. Nunes do Rosario, Erhard F., Finn Thain, Frederic Barrat, Ganesh Goudar, Gautham R. Shenoy, Geoff Levand, Greg Kurz, Gustavo A. R. Silva, Hari Bathini, Harish, Imre Kaloz, Joel Stanley, Joe Perches, John Crispin, Jordan Niethe, Kajol Jain, Kamalesh Babulal, Kees Cook, Laurent Dufour, Leonardo Bras, Li RongQing, Madhavan Srinivasan, Mahesh Salgaonkar, Mark Cave-Ayland, Michal Suchanek, Milton Miller, Mimi Zohar, Murilo Opsfelder Araujo, Nathan Chancellor, Nathan Lynch, Naveen N. Rao, Nayna Jain, Nicholas Piggin, Oliver O'Halloran, Palmer Dabbelt, Pedro Miraglia Franco de Carvalho, Philippe Bergheaud, Pingfan Liu, Pratik Rajesh Sampat, Qian Cai, Qinglang Miao, Randy Dunlap, Ravi Bangoria, Sachin Sant, Sam Bobroff, Sandipan Das, Santosh Sivaraj, Satheesh Rajendran, Shirisha Ganta, Sourabh Jain, Srikar Dronamraju, Stan Johnson, Stephen Rothwell, Thadeu Lima de Souza Cascardo, Thiago Jung Bauermann, Tom Lane, Vaibhav Jain, Vladis Dronov, Wei Yongjun, Wen Xiong, YueHaibing. * tag 'powerpc-5.9-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (337 commits) selftests/powerpc: Fix pkey syscall redefinitions powerpc: Fix circular dependency between percpu.h and mmu.h powerpc/powernv/sriov: Fix use of uninitialised variable selftests/powerpc: Skip vmx/vsx/tar/etc tests on older CPUs powerpc/40x: Fix assembler warning about r0 powerpc/papr_scm: Add support for fetching nvdimm 'fuel-gauge' metric powerpc/papr_scm: Fetch nvdimm performance stats from PHYP cpuidle: pseries: Fixup exit latency for CEDE(0) cpuidle: pseries: Add function to parse extended CEDE records cpuidle: pseries: Set the latency-hint before entering CEDE selftests/powerpc: Fix online CPU selection powerpc/perf: Consolidate perf_callchain_user_[64|32]() powerpc/pseries/hotplug-cpu: Remove double free in error path powerpc/pseries/mobility: Add pr_debug() for device tree changes powerpc/pseries/mobility: Set pr_fmt() powerpc/cacheinfo: Warn if cache object chain becomes unordered powerpc/cacheinfo: Improve diagnostics about malformed cache lists powerpc/cacheinfo: Use name@unit instead of full DT path in debug messages powerpc/cacheinfo: Set pr_fmt() powerpc: fix function annotations to avoid section mismatch warnings with gcc-10 ...

perf tools powerpc: Add support for extended regs in power10

2020-08-07T12:27:03+00:00

Added support for supported regs which are new in power10 ( MMCR3, SIER2, SIER3 ) to sample_reg_mask in the tool side to use with `-I?` option. Also added PVR check to send extended mask for power10 at kernel while capturing extended regs in each sample. Signed-off-by: Athira Jajeev Reviewed-by: Kajol Jain Reviewed-by: Ravi Bangoria Tested-by: Ravi Bangoria Cc: Jiri Olsa Cc: Madhavan Srinivasan Cc: Michael Ellerman Cc: Michael Neuling Cc: Ravi Bangoria Cc: linuxppc-dev@lists.ozlabs.org Signed-off-by: Arnaldo Carvalho de Melo

perf tools powerpc: Add support for extended register capability

2020-08-07T12:27:03+00:00

Add extended regs to sample_reg_mask in the tool side to use with `-I?` option. Perf tools side uses extended mask to display the platform supported register names (with -I? option) to the user and also send this mask to the kernel to capture the extended registers in each sample. Hence decide the mask value based on the processor version. Currently definitions for `mfspr`, `SPRN_PVR` are part of `arch/powerpc/util/header.c`. Move this to a header file so that these definitions can be re-used in other source files as well. Signed-off-by: Anju T Sudhakar Reviewed-by: Kajol Jain Reviewed-by: Madhavan Srinivasan Reviewed--by: Ravi Bangoria Tested-by: Ravi Bangoria Cc: Jiri Olsa Cc: Michael Ellerman Cc: Michael Neuling Cc: Ravi Bangoria Cc: linuxppc-dev@lists.ozlabs.org [Decide extended mask at run time based on platform] Signed-off-by: Athira Jajeev Signed-off-by: Arnaldo Carvalho de Melo

tools headers API: Update close_range affected files

2020-08-06T12:52:41+00:00

To pick the changes from: 55db9c0e8534 ("net: remove compat_sys_{get,set}sockopt") 9b4feb630e8e ("arch: wire-up close_range()") That automagically add the 'close_range' syscall to tools such as 'perf trace'. Before: # perf trace -e close_range event syntax error: 'close_range' \___ parser error Run 'perf list' for a list of valid events Usage: perf trace [] [] or: perf trace [] -- [] or: perf trace record [] [] or: perf trace record [] -- [] -e, --event event/syscall selector. use 'perf list' to list available events # After, system wide strace like tracing for this syscall: # perf trace -e close_range ^C# No calls, I need some test proggie :-) Cc: Adrian Hunter Cc: Christian Brauner Cc: Christoph Hellwig Cc: David S. Miller Cc: Jiri Olsa Cc: Namhyung Kim Signed-off-by: Arnaldo Carvalho de Melo

Mgerge remote-tracking branch 'torvalds/master' into perf/core

2020-08-06T11:15:47+00:00

To sync headers, for instance, in this case tools/perf was ahead of upstream till Linus merged tip/perf/core to get the PERF_RECORD_TEXT_POKE changes: Warning: Kernel ABI header at 'tools/include/uapi/linux/perf_event.h' differs from latest version at 'include/uapi/linux/perf_event.h' diff -u tools/include/uapi/linux/perf_event.h include/uapi/linux/perf_event.h Signed-off-by: Arnaldo Carvalho de Melo

Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

2020-08-02T08:02:12+00:00

Resolved kernel/bpf/btf.c using instructions from merge commit 69138b34a7248d2396ab85c8652e20c0c39beaba Signed-off-by: David S. Miller

perf tools: Fix record failure when mixed with ARM SPE event

2020-07-31T12:29:01+00:00

When recording with cache-misses and arm_spe_x event, I found that it will just fail without showing any error info if i put cache-misses after 'arm_spe_x' event. [root@localhost 0620]# perf record -e cache-misses \ -e arm_spe_0/ts_enable=1,pct_enable=1,pa_enable=1,load_filter=1,jitter=1,store_filter=1,min_latency=0/ sleep 1 [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.067 MB perf.data ] [root@localhost 0620]# [root@localhost 0620]# perf record -e arm_spe_0/ts_enable=1,pct_enable=1,pa_enable=1,load_filter=1,jitter=1,store_filter=1,min_latency=0/ \ -e cache-misses sleep 1 [root@localhost 0620]# The current code can only work if the only event to be traced is an 'arm_spe_x', or if it is the last event to be specified. Otherwise the last event type will be checked against all the arm_spe_pmus[i]->types, none will match and an out of bound 'i' index will be used in arm_spe_recording_init(). We don't support concurrent multiple arm_spe_x events currently, that is checked in arm_spe_recording_options(), and it will show the relevant info. So add the check and record of the first found 'arm_spe_pmu' to fix this issue here. Fixes: ffd3d18c20b8 ("perf tools: Add ARM Statistical Profiling Extensions (SPE) support") Signed-off-by: Wei Li Reviewed-by: Mathieu Poirier Tested-by-by: Leo Yan Cc: Alexander Shishkin Cc: Hanjun Guo Cc: Jiri Olsa Cc: Kim Phillips Cc: Mark Rutland Cc: Mike Leach Cc: Namhyung Kim Cc: Peter Zijlstra Cc: Suzuki Poulouse Cc: linux-arm-kernel@lists.infradead.org Link: http://lore.kernel.org/lkml/20200724071111.35593-2-liwei391@huawei.com Signed-off-by: Arnaldo Carvalho de Melo

perf tools: No need to cache the PMUs in ARM SPE auxtrace init routine

2020-07-29T21:02:38+00:00

- auxtrace_record__init() is called only once, so there is no point in using a static variable to cache the results of find_all_arm_spe_pmus(), make it local and free the results after use. - Another reason is, even though SPE is micro-architecture dependent, but so far it only supports "statistical-profiling-extension-v1" and we have no chance to use multiple SPE's PMU events in Perf command. So remove the useless check code to make it clear. Signed-off-by: Wei Li Reviewed-by: Mathieu Poirier Cc: Alexander Shishkin Cc: Hanjun Guo Cc: Jiri Olsa Cc: Kim Phillips Cc: Leo Yan Cc: Mark Rutland Cc: Mike Leach Cc: Namhyung Kim Cc: Peter Zijlstra Cc: Suzuki Poulouse Cc: linux-arm-kernel@lists.infradead.org Link: http://lore.kernel.org/lkml/20200724071111.35593-3-liwei391@huawei.com Signed-off-by: Arnaldo Carvalho de Melo