- 06 May, 2016 18 commits
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Ingo Molnar authored
Merge tag 'perf-core-for-mingo-20160505' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/core Pull perf/core improvements and fixes from Arnaldo Carvalho de Melo: User visible changes: - Order output of 'perf trace --summary' better, now the threads will appear ascending order of number of events, and then, for each, in descending order of syscalls by the time spent in the syscalls, so that the last page produced can be the one about the most interesting thread straced, suggested by Milian Wolff (Arnaldo Carvalho de Melo) - Do not show the runtime_ms for a thread when not collecting it, that is done so far only with 'perf trace --sched' (Arnaldo Carvalho de Melo) - Fix kallsyms perf test on ppc64le (Naveen N. Rao) Infrastructure changes: - Move global variables related to presence of some keys in the sort order to a per hist struct, to allow code like the hists browser to work with multiple hists with different lists of columns (Jiri Olsa) - Add support for generating bpf prologue in powerpc (Naveen N. Rao) - Fix kprobe and kretprobe handling with kallsyms on ppc64le (Naveen N. Rao) - evlist mmap changes, prep work for supporting reading backwards (Wang Nan) Signed-off-by:
Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by:
Ingo Molnar <mingo@kernel.org>
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Wang Nan authored
In perf_mmap__read(), give better names to pointers. Original name 'old' and 'head' directly related to pointers in ring buffer control page. For backward ring buffer, the meaning of 'head' point is not 'the first byte of free space', but 'the first byte of the last record'. To reduce confusion, rename 'old' to 'start', 'head' to 'end'. 'start' -> 'end' is the direction the records should be read from. Change parameter order. Change 'overwrite' to 'check_messup'. When reading from 'head', no need to check messup for for backward ring buffer. Signed-off-by:
Wang Nan <wangnan0@huawei.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Zefan Li <lizefan@huawei.com> Cc: pi3orama@163.com Link: http://lkml.kernel.org/r/1461723563-67451-3-git-send-email-wangnan0@huawei.comSigned-off-by:
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Wang Nan authored
Extract event reader from perf_evlist__mmap_read() to perf__mmap_read(). Future commit will feed it with manually computed 'head' and 'old' pointers. Signed-off-by:
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Naveen N. Rao authored
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 <mpe@ellerman.id.au> Signed-off-by:
Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com> Acked-by:
Ananth N Mavinakayanahalli <ananth@in.ibm.com> Acked-by:
Balbir Singh <bsingharora@gmail.com> Cc: Mark Wielaard <mjw@redhat.com> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Thiago Jung Bauermann <bauerman@linux.vnet.ibm.com> Cc: linuxppc-dev@lists.ozlabs.org Link: http://lkml.kernel.org/r/6be7c2b17e370100c2f79dd444509df7929bdd3e.1460451721.git.naveen.n.rao@linux.vnet.ibm.comSigned-off-by:
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Naveen N. Rao authored
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:
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Jiri Olsa authored
Now we have sort dimensions private for struct hists, we need to make dimension booleans hists specific as well. Moving sort__has_comm into struct perf_hpp_list. Signed-off-by:
Jiri Olsa <jolsa@kernel.org> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1462276488-26683-8-git-send-email-jolsa@kernel.orgSigned-off-by:
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Jiri Olsa authored
Now we have sort dimensions private for struct hists, we need to make dimension booleans hists specific as well. Moving sort__has_thread into struct perf_hpp_list. Signed-off-by:
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Jiri Olsa authored
Now we have sort dimensions private for struct hists, we need to make dimension booleans hists specific as well. Moving sort__has_socket into struct perf_hpp_list. Signed-off-by:
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Jiri Olsa authored
Now we have sort dimensions private for struct hists, we need to make dimension booleans hists specific as well. Moving sort__has_dso into struct perf_hpp_list. Signed-off-by:
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Jiri Olsa authored
Now we have sort dimensions private for struct hists, we need to make dimension booleans hists specific as well. Moving sort__has_sym into struct perf_hpp_list. Signed-off-by:
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Jiri Olsa authored
Now we have sort dimensions private for struct hists, we need to make dimension booleans hists specific as well. Moving sort__has_parent into struct perf_hpp_list. Signed-off-by:
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Jiri Olsa authored
Now we have sort dimensions private for struct hists, we need to make dimension booleans hists specific as well. Moving sort__need_collapse into struct perf_hpp_list. Adding hists__has macro to easily access this info perf struct hists object. Signed-off-by:
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Naveen N. Rao authored
Generalize existing macros to serve the purpose. Signed-off-by:
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Arnaldo Carvalho de Melo authored
That field is only updated when we use the "sched:sched_stat_runtime" tracepoint, and that is only done so far when we use the '--stat' command line option, without it we get just zeros, confusing the users: Without this patch: # trace -a -s sleep 1 <SNIP> qemu-system-x86 (9931), 468 events, 9.6%, 0.000 msec syscall calls total min avg max stddev (msec) (msec) (msec) (msec) (%) ---------- ------ --------- --------- --------- --------- ------ ppoll 98 982.374 0.000 10.024 29.983 12.65% write 34 0.401 0.005 0.012 0.027 5.49% ioctl 102 0.347 0.002 0.003 0.007 3.08% firefox (10871), 1856 events, 38.2%, 0.000 msec (msec) (msec) (msec) (msec) (%) ---------- ------ --------- --------- --------- --------- ------ poll 395 934.873 0.000 2.367 17.120 11.51% recvmsg 395 0.988 0.001 0.003 0.021 4.20% read 106 0.460 0.002 0.004 0.007 3.17% futex 24 0.108 0.001 0.004 0.010 10.05% mmap 2 0.041 0.016 0.021 0.026 23.92% write 6 0.027 0.004 0.004 0.005 2.52% After this patch that ', 0.000 msecs' gets suppressed when --stat is not in use. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Milian Wolff <milian.wolff@kdab.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-p7emqrsw7900tdkg43v9l1e1@git.kernel.orgSigned-off-by: -
Arnaldo Carvalho de Melo authored
# trace -a -s sleep 1 <SNIP> Xorg (1965), 788 events, 19.0%, 0.000 msec syscall calls total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- --------- --------- --------- --------- ------ select 89 731.038 0.000 8.214 175.218 36.71% ioctl 22 0.661 0.010 0.030 0.072 10.43% writev 42 0.253 0.002 0.006 0.011 5.94% recvmsg 60 0.185 0.001 0.003 0.009 5.90% setitimer 60 0.127 0.001 0.002 0.006 6.14% read 52 0.102 0.001 0.002 0.005 8.55% rt_sigprocmask 45 0.092 0.001 0.002 0.023 23.65% poll 12 0.021 0.001 0.002 0.003 7.21% epoll_wait 12 0.019 0.001 0.002 0.002 2.71% firefox (10871), 1080 events, 26.1%, 0.000 msec syscall calls total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- --------- --------- --------- --------- ------ poll 240 979.562 0.000 4.082 17.132 11.33% recvmsg 240 0.532 0.001 0.002 0.007 3.69% read 60 0.303 0.003 0.005 0.029 8.50% Suggested-by:Milian Wolff <milian.wolff@kdab.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-52kdkuyxihq0kvc0n2aalhay@git.kernel.orgSigned-off-by:
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Arnaldo Carvalho de Melo authored
# trace -a -s sleep 1 |& grep events | tail gmain (1733), 34 events, 1.0%, 0.000 msec hexchat (9765), 46 events, 1.4%, 0.000 msec ssh (11109), 80 events, 2.4%, 0.000 msec sleep (32631), 81 events, 2.4%, 0.000 msec qemu-system-x86 (10021), 272 events, 8.2%, 0.000 msec Xorg (1965), 322 events, 9.7%, 0.000 msec SoftwareVsyncTh (10922), 366 events, 11.1%, 0.000 msec gnome-shell (2231), 446 events, 13.5%, 0.000 msec qemu-system-x86 (9931), 468 events, 14.1%, 0.000 msec firefox (10871), 1098 events, 33.2%, 0.000 msec [root@jouet ~]# Suggested-by:
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Arnaldo Carvalho de Melo authored
Sometimes we want to sort an existing rbtree by a different key, introduce a template for that, that needs only to be provided the rbtree root and the number of entries in it. To do that a new rbtree will be created with extra space for each entry, where possibly pre-calculated keys will be stored to be used in the resort process and also later, when using the newly sorted rbtree. Please check the following two changesets to see it in use for resorting stats for threads and its syscalls in 'perf trace --summary'. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Milian Wolff <milian.wolff@kdab.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-9l6e1q34lmf3wwdeewstyakg@git.kernel.orgSigned-off-by:
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Arnaldo Carvalho de Melo authored
To be used, for instance, for pre-allocating an rb_tree array for sorting by other keys besides the current pid one. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Milian Wolff <milian.wolff@kdab.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-ja0ifkwue7ttjhbwijn6g6eu@git.kernel.orgSigned-off-by:
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- 05 May, 2016 14 commits
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Alexander Shishkin authored
This patch converts remaining ACCESS_ONCE() instances into READ_ONCE() and WRITE_ONCE() as appropriate. Signed-off-by:
Alexander Shishkin <alexander.shishkin@linux.intel.com> Signed-off-by:
Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Arnaldo Carvalho de Melo <acme@infradead.org> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Borislav Petkov <bp@alien8.de> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Vince Weaver <vincent.weaver@maine.edu> Cc: vince@deater.net Link: http://lkml.kernel.org/r/1461857746-31346-2-git-send-email-alexander.shishkin@linux.intel.comSigned-off-by:
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Alexander Shishkin authored
Intel PT decoders need access to various bits of timing related information to be able to correctly decode timing packets from a PT stream (MTC and CBR packets). This patch exports all the necessary bits as sysfs attributes for the sake of consistency: * max_nonturbo_ratio: ratio between the invariant TSC and base clock; * tsc_art_ratio: TSC to core crystal clock ratio (also available as CPUID.15H). Signed-off-by:
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Alexander Shishkin authored
Not all cores prevent using Intel PT and LBRs simultaneously, although most of them still do as of today. This patch adds an opt-in flag for such cores to disable mutual exclusivity between PT and LBR; also flip it on for Goldmont. Signed-off-by:
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Mark Rutland authored
Commit: 26657848 ("perf/core: Verify we have a single perf_hw_context PMU") forcefully prevents multiple PMUs from sharing perf_hw_context, as this generally doesn't make sense. It is a common bug for uncore PMUs to use perf_hw_context rather than perf_invalid_context, which this detects. However, systems exist with heterogeneous CPUs (and hence heterogeneous HW PMUs), for which sharing perf_hw_context is necessary, and possible in some limited cases. To make this work we have to perform some gymnastics, as we did in these commits: 66eb579e ("perf: allow for PMU-specific event filtering") c904e32a ("arm: perf: filter unschedulable events") To allow those systems to work, we must allow PMUs for heterogeneous CPUs to share perf_hw_context, though we must still disallow sharing otherwise to detect the common misuse of perf_hw_context. This patch adds a new PERF_PMU_CAP_HETEROGENEOUS_CPUS for this, updates the core logic to account for this, and makes use of it in the arm_pmu code that is used for systems with heterogeneous CPUs. Comments are added to make the rationale clear and hopefully avoid accidental abuse. Signed-off-by:
Mark Rutland <mark.rutland@arm.com> Signed-off-by:
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Alexander Shishkin authored
Export an additional common attribute for PMUs that support address range filtering to let the perf userspace identify such PMUs in a uniform way. Signed-off-by:
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Alexander Shishkin authored
Newer versions of Intel PT support address ranges, which can be used to define IP address range-based filters or TraceSTOP regions. Number of ranges in enumerated via cpuid. This patch implements PMU callbacks and related low-level code to allow filter validation, configuration and programming into the hardware. Signed-off-by:
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Alexander Shishkin authored
Many instruction tracing PMUs out there support address range-based filtering, which would, for example, generate trace data only for a given range of instruction addresses, which is useful for tracing individual functions, modules or libraries. Other PMUs may also utilize this functionality to allow filtering to or filtering out code at certain address ranges. This patch introduces the interface for userspace to specify these filters and for the PMU drivers to apply these filters to hardware configuration. The user interface is an ASCII string that is passed via an ioctl() and specifies (in the form of an ASCII string) address ranges within certain object files or within kernel. There is no special treatment for kernel modules yet, but it might be a worthy pursuit. The PMU driver interface basically adds two extra callbacks to the PMU driver structure, one of which validates the filter configuration proposed by the user against what the hardware is actually capable of doing and the other one translates hardware-independent filter configuration into something that can be programmed into the hardware. Signed-off-by:
Mathieu Poirier <mathieu.poirier@linaro.org> Cc: Arnaldo Carvalho de Melo <acme@infradead.org> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Borislav Petkov <bp@alien8.de> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Vince Weaver <vincent.weaver@maine.edu> Cc: vince@deater.net Link: http://lkml.kernel.org/r/1461771888-10409-6-git-send-email-alexander.shishkin@linux.intel.comSigned-off-by:
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Alexander Shishkin authored
Trace filtering code needs an iterator that can go through all events in a context, including inactive and filtered, to be able to update their filters' address ranges based on mmap or exec events. This patch changes perf_event_aux_ctx() to optionally do this. Signed-off-by:
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Alexander Shishkin authored
New versions of Intel PT support address range-based filtering. Add the new registers, bit definitions and relevant CPUID bits. Signed-off-by:
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Alexander Shishkin authored
Nothing outside of the Intel PT driver should ever care about its MSR bits, so there is no reason to keep them in msr-index.h. This patch moves them to a pt-local header. Signed-off-by:
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Alexander Shishkin authored
For instruction trace filtering, namely, for communicating filter definitions from userspace, I'd like to re-use the SET_FILTER code that the tracepoints are using currently. To that end, move the relevant code out from behind the CONFIG_EVENT_TRACING dependency. Signed-off-by:
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Ingo Molnar authored
Signed-off-by: -
Peter Zijlstra authored
The new sanity check introduced by: 26657848 ("perf/core: Verify we have a single perf_hw_context PMU") ... triggered on the AMD IOMMU driver. IOMMUs are not per logical CPU, they cannot have per-task counters. Fix it. Reported-by:
Borislav Petkov <bp@alien8.de> Tested-by:
Borislav Petkov <bp@suse.de> Signed-off-by:
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Andi Kleen authored
Everything the same as Skylake, just new model numbers. Signed-off-by:
Andi Kleen <ak@linux.intel.com> Signed-off-by:
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- 01 May, 2016 2 commits
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Linus Torvalds authored
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git://git.kernel.org/pub/scm/linux/kernel/git/evalenti/linux-soc-thermalLinus Torvalds authored
Pull thermal fixes from Eduardo Valentin: "A couple of minor fixes for the thermal subsystem. Specifics in this pull request: - Fixes in hisilicon thermal driver - More fixes of unsigned to int type change in thermal_core.c" * 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/evalenti/linux-soc-thermal: thermal: use %d to print S32 parameters thermal: hisilicon: increase temperature resolution
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- 30 Apr, 2016 6 commits
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git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linuxLinus Torvalds authored
Pull powerpc fixes from Michael Ellerman: "A few more powerpc fixes for 4.6: - cxl: Keep IRQ mappings on context teardown from Michael Neuling - cxl: Poll for outstanding IRQs when detaching a context from Michael Neuling - Wire up preadv2 and pwritev2 syscalls from Rui Salvaterra" * tag 'powerpc-4.6-4' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: powerpc: wire up preadv2 and pwritev2 syscalls cxl: Poll for outstanding IRQs when detaching a context cxl: Keep IRQ mappings on context teardown -
git://git.kernel.org/pub/scm/linux/kernel/git/bp/bpLinus Torvalds authored
Pull EDAC fix from Borislav Petkov: "Make sure sb_edac and i7core_edac do not terminate MCE processing on the decoding callchain prematurely" * tag 'edac_fix_for_4.6' of git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp: EDAC: i7core, sb_edac: Don't return NOTIFY_BAD from mce_decoder callback
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git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pmLinus Torvalds authored
Pull power management fixes from Rafael Wysocki: "One revert of a recent cpufreq commit that introduced a regression and a fix for intel_pstate's Turbo Activation Ratio handling code. Specifics: - Revert cpufreq commit that attempted to fix a problem in the ondemand/conservative governor code, but did that incorrectly and introduced another problem instead (Rafael Wysocki). - Fix incorrect decoding of MSR contents related to the Turbo Activation Ratio (TAR) handling in the intel_pstate driver (Srinivas Pandruvada)" * tag 'pm+acpi-4.6-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: cpufreq: intel_pstate: Fix processing for turbo activation ratio Revert "cpufreq: governor: Fix negative idle_time when configured with CONFIG_HZ_PERIODIC" -
git://git.linaro.org/people/ulf.hansson/mmcLinus Torvalds authored
Pull MMC fixes from Ulf Hansson: "Here are a two MMC host fixes: - sdhci-acpi: Reduce Baytrail eMMC/SD/SDIO hangs - sunxi: Disable eMMC HS-DDR for Allwinner A80" * tag 'mmc-v4.6-rc4' of git://git.linaro.org/people/ulf.hansson/mmc: mmc: sunxi: Disable eMMC HS-DDR (MMC_CAP_1_8V_DDR) for Allwinner A80 mmc: sdhci-acpi: Reduce Baytrail eMMC/SD/SDIO hangs
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git://people.freedesktop.org/~airlied/linuxLinus Torvalds authored
Pull drm fixes from Dave Airlie: "A few fixes all over the place: radeon is probably the biggest standout, it's a fix for screen corruption or hung black outputs so I thought it was worth pulling in. Otherwise some amdgpu power control fixes, some misc vmwgfx fixes, one etnaviv fix, one virtio-gpu fix, two DP MST fixes, and a single TTM fix" * 'drm-fixes' of git://people.freedesktop.org/~airlied/linux: drm/vmwgfx: Fix order of operation drm/vmwgfx: use vmw_cmd_dx_cid_check for query commands. drm/vmwgfx: Enable SVGA_3D_CMD_DX_SET_PREDICATION drm/amdgpu: disable vm interrupts with vm_fault_stop=2 drm/amdgpu: print a message if ATPX dGPU power control is missing Revert "drm/amdgpu: disable runtime pm on PX laptops without dGPU power control" drm/radeon: fix vertical bars appear on monitor (v2) drm/ttm: fix kref count mess in ttm_bo_move_to_lru_tail drm/virtio: send vblank event after crtc updates drm/dp/mst: Restore primary hub guid on resume drm/dp/mst: Get validated port ref in drm_dp_update_payload_part1() drm/etnaviv: don't move linear memory window on 3D cores without MC2.0
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git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdmaLinus Torvalds authored
Pull rdma fixes from Doug Ledford: "Final set of -rc fixes for 4.6. I've collected up a number of patches that are all pretty small with the exception of only a couple. The hfi1 driver has a number of important patches, and it is what really drives the line count of this pull request up. These are all small and I've got this kernel built and running in the test lab (I have most of the hardware, I think nes is the only thing in this patch set that I can't say I've personally tested and have up and running). Summary: - A number of collected fixes for oopses, memory corruptions, deadlocks, etc. All of these fixes are small (many only 5-10 lines), obvious, and tested. - Fix for the security issue related to the use of write for bi-directional communications" * tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma: RDMA/nes: don't leak skb if carrier down IB/security: Restrict use of the write() interface IB/hfi1: Use kernel default llseek for ui device IB/hfi1: Don't attempt to free resources if initialization failed IB/hfi1: Fix missing lock/unlock in verbs drain callback IB/rdmavt: Fix send scheduling IB/hfi1: Prevent unpinning of wrong pages IB/hfi1: Fix deadlock caused by locking with wrong scope IB/hfi1: Prevent NULL pointer deferences in caching code MAINTAINERS: Update iser/isert maintainer contact info IB/mlx5: Expose correct max_sge_rd limit RDMA/iw_cxgb4: Fix bar2 virt addr calculation for T4 chips iw_cxgb4: handle draining an idle qp iw_cxgb3: initialize ibdev.iwcm->ifname for port mapping iw_cxgb4: initialize ibdev.iwcm->ifname for port mapping IB/core: Don't drain non-existent rq queue-pair IB/core: Fix oops in ib_cache_gid_set_default_gid
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