kernel/linux.git/tools/perf/arch/powerpc/util, branch linux-4.7.y

Merge tag 'powerpc-4.7-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux

2016-05-20T17:12:41+00:00

Pull powerpc updates from Michael Ellerman: "Highlights: - Support for Power ISA 3.0 (Power9) Radix Tree MMU from Aneesh Kumar K.V - Live patching support for ppc64le (also merged via livepatching.git) Various cleanups & minor fixes from: - Aaro Koskinen, Alexey Kardashevskiy, Andrew Donnellan, Aneesh Kumar K.V, Chris Smart, Daniel Axtens, Frederic Barrat, Gavin Shan, Ian Munsie, Lennart Sorensen, Madhavan Srinivasan, Mahesh Salgaonkar, Markus Elfring, Michael Ellerman, Oliver O'Halloran, Paul Gortmaker, Paul Mackerras, Rashmica Gupta, Russell Currey, Suraj Jitindar Singh, Thiago Jung Bauermann, Valentin Rothberg, Vipin K Parashar. General: - Update LMB associativity index during DLPAR add/remove from Nathan Fontenot - Fix branching to OOL handlers in relocatable kernel from Hari Bathini - Add support for userspace Power9 copy/paste from Chris Smart - Always use STRICT_MM_TYPECHECKS from Michael Ellerman - Add mask of possible MMU features from Michael Ellerman PCI: - Enable pass through of NVLink to guests from Alexey Kardashevskiy - Cleanups in preparation for powernv PCI hotplug from Gavin Shan - Don't report error in eeh_pe_reset_and_recover() from Gavin Shan - Restore initial state in eeh_pe_reset_and_recover() from Gavin Shan - Revert "powerpc/eeh: Fix crash in eeh_add_device_early() on Cell" from Guilherme G Piccoli - Remove the dependency on EEH struct in DDW mechanism from Guilherme G Piccoli selftests: - Test cp_abort during context switch from Chris Smart - Add several tests for transactional memory support from Rashmica Gupta perf: - Add support for sampling interrupt register state from Anju T - Add support for unwinding perf-stackdump from Chandan Kumar cxl: - Configure the PSL for two CAPI ports on POWER8NVL from Philippe Bergheaud - Allow initialization on timebase sync failures from Frederic Barrat - Increase timeout for detection of AFU mmio hang from Frederic Barrat - Handle num_of_processes larger than can fit in the SPA from Ian Munsie - Ensure PSL interrupt is configured for contexts with no AFU IRQs from Ian Munsie - Add kernel API to allow a context to operate with relocate disabled from Ian Munsie - Check periodically the coherent platform function's state from Christophe Lombard Freescale: - Updates from Scott: "Contains 86xx fixes, minor device tree fixes, an erratum workaround, and a kconfig dependency fix." * tag 'powerpc-4.7-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (192 commits) powerpc/86xx: Fix PCI interrupt map definition powerpc/86xx: Move pci1 definition to the include file powerpc/fsl: Fix build of the dtb embedded kernel images powerpc/fsl: Fix rcpm compatible string powerpc/fsl: Remove FSL_SOC dependency from FSL_LBC powerpc/fsl-pci: Add a workaround for PCI 5 errata powerpc/fsl: Fix SPI compatible on t208xrdb and t1040rdb powerpc/powernv/npu: Add PE to PHB's list powerpc/powernv: Fix insufficient memory allocation powerpc/iommu: Remove the dependency on EEH struct in DDW mechanism Revert "powerpc/eeh: Fix crash in eeh_add_device_early() on Cell" powerpc/eeh: Drop unnecessary label in eeh_pe_change_owner() powerpc/eeh: Ignore handlers in eeh_pe_reset_and_recover() powerpc/eeh: Restore initial state in eeh_pe_reset_and_recover() powerpc/eeh: Don't report error in eeh_pe_reset_and_recover() Revert "powerpc/powernv: Exclude root bus in pnv_pci_reset_secondary_bus()" powerpc/powernv/npu: Enable NVLink pass through powerpc/powernv/npu: Rework TCE Kill handling powerpc/powernv/npu: Add set/unset window helpers powerpc/powernv/ioda2: Export debug helper pe_level_printk() ...

perf/powerpc: Add support for unwinding perf-stackdump

2016-05-11T11:54:06+00:00

Adds support for unwinding user stack dump by linking with libunwind. Signed-off-by: Chandan Kumar Reviewed-by: Naveen N. Rao Tested-by: Naveen N. Rao Acked-by: Arnaldo Carvalho de Melo Signed-off-by: Michael Ellerman

perf symbols: Fix kallsyms perf test on ppc64le

2016-05-06T00:04:03+00:00

ppc64le functions have a Global Entry Point (GEP) and a Local Entry Point (LEP). While placing a probe, we always prefer the LEP since it catches function calls through both the GEP and the LEP. In order to do this, we fixup the function entry points during elf symbol table lookup to point to the LEPs. This works, but breaks 'perf test kallsyms' since the symbols loaded from the symbol table (pointing to the LEP) do not match the symbols in kallsyms. To fix this, we do not adjust all the symbols during symbol table load. Instead, we note down st_other in a newly introduced arch-specific member of perf symbol structure, and later use this to adjust the probe trace point. Reported-by: Michael Ellerman Signed-off-by: Naveen N. Rao Acked-by: Ananth N Mavinakayanahalli Acked-by: Balbir Singh Cc: Mark Wielaard Cc: Masami Hiramatsu Cc: Thiago Jung Bauermann Cc: linuxppc-dev@lists.ozlabs.org Link: http://lkml.kernel.org/r/6be7c2b17e370100c2f79dd444509df7929bdd3e.1460451721.git.naveen.n.rao@linux.vnet.ibm.com Signed-off-by: Arnaldo Carvalho de Melo

perf powerpc: Fix kprobe and kretprobe handling with kallsyms on ppc64le

2016-05-06T00:04:02+00:00

So far, we used to treat probe point offsets as being offset from the LEP. However, userspace applications (objdump/readelf) always show disassembly and offsets from the function GEP. This is confusing to the user as we will end up probing at an address different from what the user expects when looking at the function disassembly with readelf/objdump. Fix this by changing how we modify probe address with perf. If only the function name is provided, we assume the user needs the LEP. Otherwise, if an offset is specified, we assume that the user knows the exact address to probe based on function disassembly, and so we just place the probe from the GEP offset. Finally, kretprobe was also broken with kallsyms as we were trying to specify an offset. This patch also fixes that issue. Reported-by: Ananth N Mavinakayanahalli Signed-off-by: Naveen N. Rao Acked-by: Balbir Singh Cc: Mark Wielaard Cc: Masami Hiramatsu Cc: Michael Ellerman Cc: Thiago Jung Bauermann Cc: linuxppc-dev@lists.ozlabs.org Link: http://lkml.kernel.org/r/75df860aad8216bf4b9bcd10c6351ecc0e3dee54.1460451721.git.naveen.n.rao@linux.vnet.ibm.com Signed-off-by: Arnaldo Carvalho de Melo

perf tools powerpc: Add support for generating bpf prologue

2016-05-06T00:03:58+00:00

Generalize existing macros to serve the purpose. Signed-off-by: Naveen N. Rao Cc: Ian Munsie Cc: Masami Hiramatsu Cc: Michael Ellerman Cc: Wang Nan Cc: linuxppc-dev@lists.ozlabs.org Link: http://lkml.kernel.org/r/1462461799-17518-1-git-send-email-naveen.n.rao@linux.vnet.ibm.com Signed-off-by: Arnaldo Carvalho de Melo

tool/perf: Add sample_reg_mask to include all perf_regs

2016-04-21T13:33:00+00:00

Add sample_reg_mask array with pt_regs registers. This is needed for printing supported regs ( -I? option). Signed-off-by: Madhavan Srinivasan Acked-by: Arnaldo Carvalho de Melo Signed-off-by: Michael Ellerman

perf tools: Fix build break on powerpc

2016-03-28T20:46:20+00:00

Commit 531d2410635c ("perf tools: Do not include stringify.h from the kernel sources") seems to have accidentially removed the inclusion of "util/header.h" from "arch/powerpc/util/header.c". "util/header.h" provides the prototype for get_cpuid() and is needed to build perf on Powerpc: arch/powerpc/util/header.c:17:1: error: no previous prototype for 'get_cpuid' [-Werror=missing-prototypes] Reported-by: Michael Ellerman Tested-by: Arnaldo Carvalho de Melo Cc: Stephen Rothwell Fixes: 531d2410635c ("perf tools: Do not include stringify.h from the kernel sources") Signed-off-by: Sukadev Bhattiprolu [ Included "util.h" too, to get the scnprintf() prototype ] Signed-off-by: Arnaldo Carvalho de Melo

perf tools: Do not include stringify.h from the kernel sources

2016-03-23T18:21:15+00:00

Use instead the copy just made to tools/include/linux/. Cc: Adrian Hunter Cc: Jiri Olsa Cc: Namhyung Kim Cc: Wang Nan Link: http://lkml.kernel.org/n/tip-q736w12nwy98x5ox2hamp5ow@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo

perf kvm/powerpc: Add support for HCALL reasons

2016-01-29T20:49:54+00:00

Powerpc provides hcall events that also provides insights into guest behaviour. Enhance perf kvm stat to record and analyze hcall events. - To trace hcall events : perf kvm stat record - To show the results : perf kvm stat report --event=hcall The result shows the number of hypervisor calls from the guest grouped by their respective reasons displayed with the frequency. This patch makes use of two additional tracepoints "kvm_hv:kvm_hcall_enter" and "kvm_hv:kvm_hcall_exit". To map the hcall codes to their respective names, it needs a mapping. Such mapping is added in this patch in book3s_hcalls.h. # pgrep qemu A sample output : 19378 60515 2 VMs running. # perf kvm stat record -a ^C[ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 4.153 MB perf.data.guest (39624 samples) ] # perf kvm stat report -p 60515 --event=hcall Analyze events for all VMs, all VCPUs: HCALL-EVENT Samples Samples% Time% MinTime MaxTime AvgTime H_IPI 822 66.08% 88.10% 0.63us 11.38us 2.05us (+- 1.42%) H_SEND_CRQ 144 11.58% 3.77% 0.41us 0.88us 0.50us (+- 1.47%) H_VIO_SIGNAL 118 9.49% 2.86% 0.37us 0.83us 0.47us (+- 1.43%) H_PUT_TERM_CHAR 76 6.11% 2.07% 0.37us 0.90us 0.52us (+- 2.43%) H_GET_TERM_CHAR 74 5.95% 2.23% 0.37us 1.70us 0.58us (+- 4.77%) H_RTAS 6 0.48% 0.85% 1.10us 9.25us 2.70us (+-48.57%) H_PERFMON 4 0.32% 0.12% 0.41us 0.96us 0.59us (+-20.92%) Total Samples:1244, Total events handled time:1916.69us. Signed-off-by: Hemant Kumar Cc: Alexander Yarygin Cc: David Ahern Cc: Michael Ellerman Cc: Naveen N. Rao Cc: Paul Mackerras Cc: Scott Wood Cc: Srikar Dronamraju Cc: linuxppc-dev@lists.ozlabs.org Link: http://lkml.kernel.org/r/1453962787-15376-4-git-send-email-hemant@linux.vnet.ibm.com Signed-off-by: Arnaldo Carvalho de Melo

perf kvm/powerpc: Port perf kvm stat to powerpc

2016-01-29T20:49:54+00:00

perf kvm can be used to analyze guest exit reasons. This support already exists in x86. Hence, porting it to powerpc. - To trace KVM events : perf kvm stat record If many guests are running, we can track for a specific guest by using --pid as in : perf kvm stat record --pid - To see the results : perf kvm stat report The result shows the number of exits (from the guest context to host/hypervisor context) grouped by their respective exit reasons with their frequency. Since, different powerpc machines have different KVM tracepoints, this patch discovers the available tracepoints dynamically and accordingly looks for them. If any single tracepoint is not present, this support won't be enabled for reporting. To record, this will fail if any of the events we are looking to record isn't available. Right now, its only supported on PowerPC Book3S_HV architectures. To analyze the different exits, group them and present them (in a slight descriptive way) to the user, we need a mapping between the "exit code" (dumped in the kvm_guest_exit tracepoint data) and to its related Interrupt vector description (exit reason). This patch adds this mapping in book3s_hv_exits.h. It records on two available KVM tracepoints for book3s_hv: "kvm_hv:kvm_guest_exit" and "kvm_hv:kvm_guest_enter". Here is a sample o/p: # pgrep qemu 19378 60515 2 Guests are running on the host. # perf kvm stat record -a ^C[ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 4.153 MB perf.data.guest (39624 samples) ] # perf kvm stat report -p 60515 Analyze events for pid(s) 60515, all VCPUs: VM-EXIT Samples Samples% Time% MinTime MaxTime Avg time SYSCALL 9141 63.67% 7.49% 1.26us 5782.39us 9.87us (+- 6.46%) H_DATA_STORAGE 4114 28.66% 5.07% 1.72us 4597.68us 14.84us (+-20.06%) HV_DECREMENTER 418 2.91% 4.26% 0.70us 30002.22us 122.58us (+-70.29%) EXTERNAL 392 2.73% 0.06% 0.64us 104.10us 1.94us (+-18.83%) RETURN_TO_HOST 287 2.00% 83.11% 1.53us 124240.15us 3486.52us (+-16.81%) H_INST_STORAGE 5 0.03% 0.00% 1.88us 3.73us 2.39us (+-14.20%) Total Samples:14357, Total events handled time:1203918.42us. Signed-off-by: Hemant Kumar Cc: Alexander Yarygin Cc: David Ahern Cc: Michael Ellerman Cc: Naveen N. Rao Cc: Paul Mackerras Cc: Scott Wood Cc: Srikar Dronamraju Cc: linuxppc-dev@lists.ozlabs.org Link: http://lkml.kernel.org/r/1453962787-15376-3-git-send-email-hemant@linux.vnet.ibm.com Signed-off-by: Srikar Dronamraju Signed-off-by: Arnaldo Carvalho de Melo