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2016-02-17perf/x86: Move perf_event_intel_uncore.[ch] .. => x86/events/intel/uncore.[ch]Borislav Petkov
Signed-off-by: Borislav Petkov <bp@suse.de> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> 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> Link: http://lkml.kernel.org/r/1455098123-11740-10-git-send-email-bp@alien8.de Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-01-21perf/x86: add Intel SkyLake uncore IMC PMU supportStephane Eranian
This patch enables the uncore_imc PMU for Intel SkyLake Desktop processors (Core i7-6700, model 94). It is possible to compute memory read/write bandwidth using: $ perf stat -a -e uncore_imc/data_reads/,uncore_imc/data_writes/ .... Signed-off-by: Stephane Eranian <eranian@google.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Vince Weaver <vincent.weaver@maine.edu> Cc: kan.liang@intel.com Link: http://lkml.kernel.org/r/1452151546-8853-1-git-send-email-eranian@google.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-01-06perf/x86/intel/uncore: Add Knights Landing uncore PMU supportHarish Chegondi
Knights Landing uncore performance monitoring (perfmon) is derived from Haswell-EP uncore perfmon with several differences. One notable difference is in PCI device IDs. Knights Landing uses common PCI device ID for multiple instances of an uncore PMU device type. In Haswell-EP, each instance of a PMU device type has a unique device ID. Knights Landing uncore components that have performance monitoring units are UBOX, CHA, EDC, MC, M2PCIe, IRP and PCU. Perfmon registers in EDC, MC, IRP, and M2PCIe reside in the PCIe configuration space. Perfmon registers in UBOX, CHA and PCU are accessed via the MSR interface. For more details, please refer to the public document: https://software.intel.com/sites/default/files/managed/15/8d/IntelXeonPhi%E2%84%A2x200ProcessorPerformanceMonitoringReferenceManual_Volume1_Registers_v0%206.pdf Signed-off-by: Harish Chegondi <harish.chegondi@intel.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Andi Kleen <andi.kleen@intel.com> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Harish Chegondi <harish.chegondi@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Kan Liang <kan.liang@intel.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Lukasz Anaczkowski <lukasz.anaczkowski@intel.com> 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> Link: http://lkml.kernel.org/r/8ac513981264c3eb10343a3f523f19cc5a2d12fe.1449470704.git.harish.chegondi@intel.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-01-06perf/x86/intel/uncore: Add Broadwell-EP uncore supportKan Liang
The uncore subsystem for Broadwell-EP is similar to Haswell-EP. There are some differences in pci device IDs, box number and constraints. This patch extends the Broadwell-DE codes to support Broadwell-EP. Signed-off-by: Kan Liang <kan.liang@intel.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> 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> Link: http://lkml.kernel.org/r/1449176411-9499-1-git-send-email-kan.liang@intel.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-10-06perf/x86/intel/uncore: Fix multi-segment problem of perf_event_intel_uncoreTaku Izumi
In multi-segment system, uncore devices may belong to buses whose segment number is other than 0: .... 0000:ff:10.5 System peripheral: Intel Corporation Xeon E5 v3/Core i7 Scratchpad & Semaphore Registers (rev 03) ... 0001:7f:10.5 System peripheral: Intel Corporation Xeon E5 v3/Core i7 Scratchpad & Semaphore Registers (rev 03) ... 0001:bf:10.5 System peripheral: Intel Corporation Xeon E5 v3/Core i7 Scratchpad & Semaphore Registers (rev 03) ... 0001:ff:10.5 System peripheral: Intel Corporation Xeon E5 v3/Core i7 Scratchpad & Semaphore Registers (rev 03 ... In that case, relation of bus number and physical id may be broken because "uncore_pcibus_to_physid" doesn't take account of PCI segment. For example, bus 0000:ff and 0001:ff uses the same entry of "uncore_pcibus_to_physid" array. This patch fixes this problem by introducing the segment-aware pci2phy_map instead. Signed-off-by: Taku Izumi <izumi.taku@jp.fujitsu.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: acme@kernel.org Cc: hpa@zytor.com Link: http://lkml.kernel.org/r/1443096621-4119-1-git-send-email-izumi.taku@jp.fujitsu.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-08-04perf/x86/intel/uncore: Add Broadwell-DE uncore supportKan Liang
The uncore subsystem for Broadwell-DE is similar to Haswell-EP. There are some differences in pci device IDs, box number and constraints. Please refer to the public document: http://www.intel.com/content/www/us/en/processors/xeon/xeon-d-1500-uncore-performance-monitoring.html Signed-off-by: Kan Liang <kan.liang@intel.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: eranian@google.com Link: http://lkml.kernel.org/r/1435839172-15114-1-git-send-email-kan.liang@intel.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-08-04perf/x86/intel/uncore: Use Sandy Bridge client PMU on Haswell/BroadwellAndi Kleen
Haswell and Broadwell have the same uncore CBOX/ARB PMU as Sandy Bridge. Add the respective model numbers to enable the SNB uncore PMU. Signed-off-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: eranian@google.com Cc: kan.liang@intel.com Link: http://lkml.kernel.org/r/1434347862-28490-2-git-send-email-andi@firstfloor.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-06-22Merge branch 'timers-core-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull timer updates from Thomas Gleixner: "A rather largish update for everything time and timer related: - Cache footprint optimizations for both hrtimers and timer wheel - Lower the NOHZ impact on systems which have NOHZ or timer migration disabled at runtime. - Optimize run time overhead of hrtimer interrupt by making the clock offset updates smarter - hrtimer cleanups and removal of restrictions to tackle some problems in sched/perf - Some more leap second tweaks - Another round of changes addressing the 2038 problem - First step to change the internals of clock event devices by introducing the necessary infrastructure - Allow constant folding for usecs/msecs_to_jiffies() - The usual pile of clockevent/clocksource driver updates The hrtimer changes contain updates to sched, perf and x86 as they depend on them plus changes all over the tree to cleanup API changes and redundant code, which got copied all over the place. The y2038 changes touch s390 to remove the last non 2038 safe code related to boot/persistant clock" * 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (114 commits) clocksource: Increase dependencies of timer-stm32 to limit build wreckage timer: Minimize nohz off overhead timer: Reduce timer migration overhead if disabled timer: Stats: Simplify the flags handling timer: Replace timer base by a cpu index timer: Use hlist for the timer wheel hash buckets timer: Remove FIFO "guarantee" timers: Sanitize catchup_timer_jiffies() usage hrtimer: Allow hrtimer::function() to free the timer seqcount: Introduce raw_write_seqcount_barrier() seqcount: Rename write_seqcount_barrier() hrtimer: Fix hrtimer_is_queued() hole hrtimer: Remove HRTIMER_STATE_MIGRATE selftest: Timers: Avoid signal deadlock in leap-a-day timekeeping: Copy the shadow-timekeeper over the real timekeeper last clockevents: Check state instead of mode in suspend/resume path selftests: timers: Add leap-second timer edge testing to leap-a-day.c ntp: Do leapsecond adjustment in adjtimex read path time: Prevent early expiry of hrtimers[CLOCK_REALTIME] at the leap second edge ntp: Introduce and use SECS_PER_DAY macro instead of 86400 ...
2015-06-22Merge branch 'perf-core-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull perf updates from Ingo Molnar: "Kernel side changes mostly consist of work on x86 PMU drivers: - x86 Intel PT (hardware CPU tracer) improvements (Alexander Shishkin) - x86 Intel CQM (cache quality monitoring) improvements (Thomas Gleixner) - x86 Intel PEBSv3 support (Peter Zijlstra) - x86 Intel PEBS interrupt batching support for lower overhead sampling (Zheng Yan, Kan Liang) - x86 PMU scheduler fixes and improvements (Peter Zijlstra) There's too many tooling improvements to list them all - here are a few select highlights: 'perf bench': - Introduce new 'perf bench futex' benchmark: 'wake-parallel', to measure parallel waker threads generating contention for kernel locks (hb->lock). (Davidlohr Bueso) 'perf top', 'perf report': - Allow disabling/enabling events dynamicaly in 'perf top': a 'perf top' session can instantly become a 'perf report' one, i.e. going from dynamic analysis to a static one, returning to a dynamic one is possible, to toogle the modes, just press 'f' to 'freeze/unfreeze' the sampling. (Arnaldo Carvalho de Melo) - Make Ctrl-C stop processing on TUI, allowing interrupting the load of big perf.data files (Namhyung Kim) 'perf probe': (Masami Hiramatsu) - Support glob wildcards for function name - Support $params special probe argument: Collect all function arguments - Make --line checks validate C-style function name. - Add --no-inlines option to avoid searching inline functions - Greatly speed up 'perf probe --list' by caching debuginfo. - Improve --filter support for 'perf probe', allowing using its arguments on other commands, as --add, --del, etc. 'perf sched': - Add option in 'perf sched' to merge like comms to lat output (Josef Bacik) Plus tons of infrastructure work - in particular preparation for upcoming threaded perf report support, but also lots of other work - and fixes and other improvements. See (much) more details in the shortlog and in the git log" * 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (305 commits) perf tools: Configurable per thread proc map processing time out perf tools: Add time out to force stop proc map processing perf report: Fix sort__sym_cmp to also compare end of symbol perf hists browser: React to unassigned hotkey pressing perf top: Tell the user how to unfreeze events after pressing 'f' perf hists browser: Honour the help line provided by builtin-{top,report}.c perf hists browser: Do not exit when 'f' is pressed in 'report' mode perf top: Replace CTRL+z with 'f' as hotkey for enable/disable events perf annotate: Rename source_line_percent to source_line_samples perf annotate: Display total number of samples with --show-total-period perf tools: Ensure thread-stack is flushed perf top: Allow disabling/enabling events dynamicly perf evlist: Add toggle_enable() method perf trace: Fix race condition at the end of started workloads perf probe: Speed up perf probe --list by caching debuginfo perf probe: Show usage even if the last event is skipped perf tools: Move libtraceevent dynamic list to separated LDFLAGS variable perf tools: Fix a problem when opening old perf.data with different byte order perf tools: Ignore .config-detected in .gitignore perf probe: Fix to return error if no probe is added ...
2015-06-09Revert "perf/x86/intel/uncore: Move uncore_box_init() out of driver ↵Ingo Molnar
initialization" This reverts commit c05199e5a57a579fea1e8fa65e2b511ceb524ffc. Vince Weaver reported the following crash while perf fuzzing: [ 79.473121] kernel BUG at mm/vmalloc.c:1335! [ 79.694391] Call Trace: [ 79.696997] <IRQ> [ 79.699090] [<ffffffff811b2130>] get_vm_area_caller+0x40/0x50 [ 79.705505] [<ffffffff81039f4d>] ? snb_uncore_imc_init_box+0x6d/0x90 [ 79.712414] [<ffffffff810635e5>] __ioremap_caller+0x195/0x350 [ 79.718610] [<ffffffff81039f4d>] ? snb_uncore_imc_init_box+0x6d/0x90 [ 79.725462] [<ffffffff81427f6b>] ? debug_object_activate+0x14b/0x1e0 [ 79.732346] [<ffffffff810637b7>] ioremap_nocache+0x17/0x20 [ 79.738283] [<ffffffff81039f4d>] snb_uncore_imc_init_box+0x6d/0x90 [ 79.744945] [<ffffffff81039cf7>] snb_uncore_imc_event_start+0xb7/0x110 [ 79.752020] [<ffffffff81039d97>] snb_uncore_imc_event_add+0x47/0x60 [ 79.758832] [<ffffffff81162cbb>] event_sched_in.isra.85+0xfb/0x330 [ 79.765519] [<ffffffff81162f5f>] group_sched_in+0x6f/0x1e0 [ 79.771481] [<ffffffff8101df1a>] ? native_sched_clock+0x2a/0x90 [ 79.777858] [<ffffffff811637bc>] __perf_event_enable+0x25c/0x2a0 [ 79.784418] [<ffffffff810f3e69>] ? tick_nohz_irq_exit+0x29/0x30 [ 79.790820] [<ffffffff8115ef30>] ? cpu_clock_event_start+0x40/0x40 [ 79.797546] [<ffffffff8115ef80>] remote_function+0x50/0x60 [ 79.803535] [<ffffffff810f8cd1>] flush_smp_call_function_queue+0x81/0x180 [ 79.810840] [<ffffffff810f9763>] generic_smp_call_function_single_interrupt+0x13/0x60 [ 79.819328] [<ffffffff8104b5e8>] smp_trace_call_function_single_interrupt+0x38/0xc0 [ 79.827614] [<ffffffff816de9be>] trace_call_function_single_interrupt+0x6e/0x80 [ 79.835465] <EOI> [ 79.837543] [<ffffffff8156e8b5>] ? cpuidle_enter_state+0x65/0x160 [ 79.844377] [<ffffffff8156e8a1>] ? cpuidle_enter_state+0x51/0x160 [ 79.851015] [<ffffffff8156e9e7>] cpuidle_enter+0x17/0x20 [ 79.856791] [<ffffffff810b6e39>] cpu_startup_entry+0x399/0x440 [ 79.863165] [<ffffffff816c9ddb>] rest_init+0xbb/0xd0 The offending commit is clearly confused as it moves heavy initialization work into IPI context. Revert it. Reported-by: Vince Weaver <vincent.weaver@maine.edu> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Kan Liang <kan.liang@intel.com> Cc: Arnaldo Carvalho de Melo <acme@kernel.org> Cc: Stephane Eranian <eranian@google.com> Cc: Yan, Zheng <zheng.z.yan@intel.com> Cc: linux-kernel@vger.kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-05-27Merge branch 'perf/urgent' into perf/core, before applying dependent patchesIngo Molnar
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-05-27perf/x86: Improve HT workaround GP counter constraintPeter Zijlstra
The (SNB/IVB/HSW) HT bug only affects events that can be programmed onto GP counters, therefore we should only limit the number of GP counters that can be used per cpu -- iow we should not constrain the FP counters. Furthermore, we should only enfore such a limit when there are in fact exclusive events being scheduled on either sibling. Reported-by: Vince Weaver <vincent.weaver@maine.edu> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> [ Fixed build fail for the !CONFIG_CPU_SUP_INTEL case. ] Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-05-27perf/x86: Fix event/group validationPeter Zijlstra
Commit 43b4578071c0 ("perf/x86: Reduce stack usage of x86_schedule_events()") violated the rule that 'fake' scheduling; as used for event/group validation; should not change the event state. This went mostly un-noticed because repeated calls of x86_pmu::get_event_constraints() would give the same result. And x86_pmu::put_event_constraints() would mostly not do anything. Commit e979121b1b15 ("perf/x86/intel: Implement cross-HT corruption bug workaround") made the situation much worse by actually setting the event->hw.constraint value to NULL, so when validation and actual scheduling interact we get NULL ptr derefs. Fix it by removing the constraint pointer from the event and move it back to an array, this time in cpuc instead of on the stack. validate_group() x86_schedule_events() event->hw.constraint = c; # store <context switch> perf_task_event_sched_in() ... x86_schedule_events(); event->hw.constraint = c2; # store ... put_event_constraints(event); # assume failure to schedule intel_put_event_constraints() event->hw.constraint = NULL; <context switch end> c = event->hw.constraint; # read -> NULL if (!test_bit(hwc->idx, c->idxmsk)) # <- *BOOM* NULL deref This in particular is possible when the event in question is a cpu-wide event and group-leader, where the validate_group() tries to add an event to the group. Reported-by: Vince Weaver <vincent.weaver@maine.edu> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Andrew Hunter <ahh@google.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Maria Dimakopoulou <maria.n.dimakopoulou@gmail.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Fixes: 43b4578071c0 ("perf/x86: Reduce stack usage of x86_schedule_events()") Fixes: e979121b1b15 ("perf/x86/intel: Implement cross-HT corruption bug workaround") Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-05-11perf/x86/intel/uncore: Add Broadwell-U uncore IMC PMU supportStephane Eranian
This patch enables the uncore Memory Controller (IMC) PMU support for Intel Broadwell-U (Model 61) mobile processors. The IMC PMU enables measuring memory bandwidth. To use with perf: $ perf stat -a -I 1000 -e uncore_imc/data_reads/,uncore_imc/data_writes/ sleep 10 Tested-by: Sonny Rao <sonnyrao@chromium.org> Signed-off-by: Stephane Eranian <eranian@google.com> Cc: Borislav Petkov <bp@alien8.de> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: kan.liang@intel.com Cc: peterz@infradead.org Link: http://lkml.kernel.org/r/20150423065642.GA4890@thinkpad Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-04-22x86: perf: uncore: Use hrtimer_start()Thomas Gleixner
hrtimer_start() does not longer defer already expired timers to the softirq. Get rid of the __hrtimer_start_range_ns() invocation. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Peter Zijlstra <peterz@infradead.org> Cc: Preeti U Murthy <preeti@linux.vnet.ibm.com> Cc: Viresh Kumar <viresh.kumar@linaro.org> Cc: Marcelo Tosatti <mtosatti@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: x86@kernel.org Link: http://lkml.kernel.org/r/20150414203502.360555157@linutronix.de Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2015-01-28perf/x86/intel/uncore: Move uncore_box_init() out of driver initializationKan Liang
There were some issues about the uncore driver tried to access non-existing boxes, which caused boot crashes. These issues have been all fixed. But we should avoid boot failures if that ever happens again. This patch intends to prevent this kind of potential issues. It moves uncore_box_init out of driver initialization. The box will be initialized when it's first enabled. Signed-off-by: Kan Liang <kan.liang@intel.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: http://lkml.kernel.org/r/1421729665-5912-1-git-send-email-kan.liang@intel.com Cc: Arnaldo Carvalho de Melo <acme@kernel.org> Cc: Stephane Eranian <eranian@google.com> Cc: Yan, Zheng <zheng.z.yan@intel.com> Signed-off-by: Ingo Molnar <mingo@kernel.org>
2014-12-19Merge branch 'perf-urgent-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull perf fixes and cleanups from Ingo Molnar: "A kernel fix plus mostly tooling fixes, but also some tooling restructuring and cleanups" * 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (39 commits) perf: Fix building warning on ARM 32 perf symbols: Fix use after free in filename__read_build_id perf evlist: Use roundup_pow_of_two tools: Adopt roundup_pow_of_two perf tools: Make the mmap length autotuning more robust tools: Adopt rounddown_pow_of_two and deps tools: Adopt fls_long and deps tools: Move bitops.h from tools/perf/util to tools/ tools: Introduce asm-generic/bitops.h tools lib: Move asm-generic/bitops/find.h code to tools/include and tools/lib tools: Whitespace prep patches for moving bitops.h tools: Move code originally from asm-generic/atomic.h into tools/include/asm-generic/ tools: Move code originally from linux/log2.h to tools/include/linux/ tools: Move __ffs implementation to tools/include/asm-generic/bitops/__ffs.h perf evlist: Do not use hard coded value for a mmap_pages default perf trace: Let the perf_evlist__mmap autosize the number of pages to use perf evlist: Improve the strerror_mmap method perf evlist: Clarify sterror_mmap variable names perf evlist: Fixup brown paper bag on "hint" for --mmap-pages cmdline arg perf trace: Provide a better explanation when mmap fails ...
2014-12-11perf/x86/intel/uncore: Make sure only uncore events are collectedJiri Olsa
The uncore_collect_events functions assumes that event group might contain only uncore events which is wrong, because it might contain any type of events. This bug leads to uncore framework touching 'not' uncore events, which could end up all sorts of bugs. One was triggered by Vince's perf fuzzer, when the uncore code touched breakpoint event private event space as if it was uncore event and caused BUG: BUG: unable to handle kernel paging request at ffffffff82822068 IP: [<ffffffff81020338>] uncore_assign_events+0x188/0x250 ... The code in uncore_assign_events() function was looking for event->hw.idx data while the event was initialized as a breakpoint with different members in event->hw union. This patch forces uncore_collect_events() to collect only uncore events. Reported-by: Vince Weaver <vince@deater.net> Signed-off-by: Jiri Olsa <jolsa@redhat.com> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Yan, Zheng <zheng.z.yan@intel.com> Cc: <stable@vger.kernel.org> Link: http://lkml.kernel.org/r/1418243031-20367-2-git-send-email-jolsa@kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
2014-11-07cpumask: factor out show_cpumap into separate helper functionSudeep Holla
Many sysfs *_show function use cpu{list,mask}_scnprintf to copy cpumap to the buffer aligned to PAGE_SIZE, append '\n' and '\0' to return null terminated buffer with newline. This patch creates a new helper function cpumap_print_to_pagebuf in cpumask.h using newly added bitmap_print_to_pagebuf and consolidates most of those sysfs functions using the new helper function. Signed-off-by: Sudeep Holla <sudeep.holla@arm.com> Suggested-by: Stephen Boyd <sboyd@codeaurora.org> Tested-by: Stephen Boyd <sboyd@codeaurora.org> Acked-by: "Rafael J. Wysocki" <rjw@rjwysocki.net> Acked-by: Bjorn Helgaas <bhelgaas@google.com> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: x86@kernel.org Cc: linux-acpi@vger.kernel.org Cc: linux-pci@vger.kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-10-03perf/x86/intel/uncore: Fix minor race in box set upAndi Kleen
I was looking for the trinity oops cause in the uncore driver. (so far didn't found it) However I found this tiny race: when a box is set up two threads on the same CPU, they may be setting up the box in parallel (e.g. with kernel preemption). This could lead to the reference count being increasing too much. Always recheck there is no existing cpu reference inside the lock. Signed-off-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: eranian@google.com Cc: Arnaldo Carvalho de Melo <acme@kernel.org> Link: http://lkml.kernel.org/r/1411424826-15629-1-git-send-email-andi@firstfloor.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
2014-09-24perf/x86/intel/uncore: Register the PMU only if the uncore pci device existsYan, Zheng
Current code registers PMUs for all possible uncore pci devices. This is not good because, on some machines, one or more uncore pci devices can be missing. The missing pci device make corresponding PMU unusable. Register the PMU only if the uncore device exists. Signed-off-by: Yan, Zheng <zheng.z.yan@intel.com> Signed-off-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: eranian@google.com Link: http://lkml.kernel.org/r/1409872109-31645-3-git-send-email-andi@firstfloor.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
2014-09-24perf/x86/intel/uncore: Add Haswell-EP uncore supportYan, Zheng
The uncore subsystem in Haswell-EP is similar to Sandy/Ivy Bridge-EP. There are some differences in config register encoding and pci device IDs. The Haswell-EP uncore also supports a few new events. Add the Haswell-EP driver to the snbep split driver. Signed-off-by: Yan, Zheng <zheng.z.yan@intel.com> [ Add missing break. Add imc events. Add cbox nc/isoc/c6. ] Signed-off-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: eranian@google.com Link: http://lkml.kernel.org/r/1409872109-31645-2-git-send-email-andi@firstfloor.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
2014-09-09perf/x86: Fix section mismatch in split uncore driverAndi Kleen
The new split Intel uncore driver code that recently went into tip added a section mismatch, which the build process complains about. uncore_pmu_register() can be called from uncore_pci_probe,() which is not __init and can be called from pci driver ->probe. I'm not fully sure if it's actually possible to call the probe function later, but it seems safer to mark uncore_pmu_register not __init. This also fixes the warning. Signed-off-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: http://lkml.kernel.org/r/1409332858-29039-1-git-send-email-andi@firstfloor.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
2014-08-13perf/x86/uncore: Rename IvyTown to IvyBridge-EPPeter Zijlstra
Keeping track of all the various CPU names is hard enough; adding extra silly names for no reason is just not helping. If we know the base arch name (IvyBridge) then we can do the client/server parts with the well known {,EP,EX} postfixes, no need to remember endless amounts of unrelated and pointless names for this. Signed-off-by: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/n/tip-8559jke61dsyr7d0i74iutli@git.kernel.org Cc: Arnaldo Carvalho de Melo <acme@kernel.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Stephane Eranian <eranian@google.com> Cc: Yan, Zheng <zheng.z.yan@intel.com> Signed-off-by: Ingo Molnar <mingo@kernel.org>
2014-08-13perf/x86/uncore: move NHM-EX/WSM-EX specific code to seperate fileYan, Zheng
Signed-off-by: Yan, Zheng <zheng.z.yan@intel.com> Signed-off-by: Peter Zijlstra <peterz@infradead.org> Cc: Andi Kleen <ak@linux.intel.com> Cc: Arnaldo Carvalho de Melo <acme@kernel.org> Cc: Borislav Petkov <bp@suse.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/r/1406704935-27708-4-git-send-email-zheng.z.yan@intel.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
2014-08-13perf/x86/uncore: Move SNB/IVB-EP specific code to seperate fileYan, Zheng
Signed-off-by: Yan, Zheng <zheng.z.yan@intel.com> Signed-off-by: Peter Zijlstra <peterz@infradead.org> Cc: Andi Kleen <ak@linux.intel.com> Cc: Arnaldo Carvalho de Melo <acme@kernel.org> Cc: Borislav Petkov <bp@suse.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/r/1406704935-27708-3-git-send-email-zheng.z.yan@intel.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
2014-08-13perf/x86/uncore: Move NHM/SNB/IVB specific code to seperate fileYan, Zheng
Signed-off-by: Yan, Zheng <zheng.z.yan@intel.com> Signed-off-by: Peter Zijlstra <peterz@infradead.org> Cc: Andi Kleen <ak@linux.intel.com> Cc: Arnaldo Carvalho de Melo <acme@kernel.org> Cc: Borislav Petkov <bp@suse.de> Cc: Stephane Eranian <eranian@google.com> Cc: eranian@google.com Link: http://lkml.kernel.org/r/1406704935-27708-2-git-send-email-zheng.z.yan@intel.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
2014-08-13perf/x86/uncore: Declare some functions and variablesYan, Zheng
Prepare for moving hardware specific code to seperate files. Signed-off-by: Yan, Zheng <zheng.z.yan@intel.com> Signed-off-by: Peter Zijlstra <peterz@infradead.org> Cc: Arnaldo Carvalho de Melo <acme@kernel.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Stephane Eranian <eranian@google.com> Cc: eranian@google.com Cc: andi@firstfloor.org Link: http://lkml.kernel.org/r/1406704935-27708-1-git-send-email-zheng.z.yan@intel.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
2014-07-28Merge tag 'v3.16-rc7' into perf/core, to merge in the latest fixes before ↵Ingo Molnar
applying new changes Signed-off-by: Ingo Molnar <mingo@kernel.org>
2014-07-16perf/x86/intel/uncore: Fix SNB-EP/IVT Cbox filter mappingsStephane Eranian
This patch fixes the SNB-EP and IVT Cbox filter mapping table. The table controls which filters are supported by which events. There were several mistakes in those tables causing some filters to be ignored, such as NID on TOR_INSERTS. Signed-off-by: Stephane Eranian <eranian@google.com> Signed-off-by: Peter Zijlstra <peterz@infradead.org> Cc: zheng.z.yan@intel.com Cc: Arnaldo Carvalho de Melo <acme@kernel.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Link: http://lkml.kernel.org/r/20140630144624.GA2604@quad Signed-off-by: Ingo Molnar <mingo@kernel.org>
2014-07-05perf/x86: Micro-optimize nhmex_rbox_get_constraint()Rasmus Villemoes
Flipping the LSB doesn't require four lines of code. This shaves a few bytes of the generated code, including a branch. Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk> Cc: Arnaldo Carvalho de Melo <acme@kernel.org> Signed-off-by: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/1403183731-15402-1-git-send-email-linux@rasmusvillemoes.dk Signed-off-by: Ingo Molnar <mingo@kernel.org>
2014-04-07Merge tag 'cpu-hotplug-3.15-rc1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm Pull CPU hotplug notifiers registration fixes from Rafael Wysocki: "The purpose of this single series of commits from Srivatsa S Bhat (with a small piece from Gautham R Shenoy) touching multiple subsystems that use CPU hotplug notifiers is to provide a way to register them that will not lead to deadlocks with CPU online/offline operations as described in the changelog of commit 93ae4f978ca7f ("CPU hotplug: Provide lockless versions of callback registration functions"). The first three commits in the series introduce the API and document it and the rest simply goes through the users of CPU hotplug notifiers and converts them to using the new method" * tag 'cpu-hotplug-3.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (52 commits) net/iucv/iucv.c: Fix CPU hotplug callback registration net/core/flow.c: Fix CPU hotplug callback registration mm, zswap: Fix CPU hotplug callback registration mm, vmstat: Fix CPU hotplug callback registration profile: Fix CPU hotplug callback registration trace, ring-buffer: Fix CPU hotplug callback registration xen, balloon: Fix CPU hotplug callback registration hwmon, via-cputemp: Fix CPU hotplug callback registration hwmon, coretemp: Fix CPU hotplug callback registration thermal, x86-pkg-temp: Fix CPU hotplug callback registration octeon, watchdog: Fix CPU hotplug callback registration oprofile, nmi-timer: Fix CPU hotplug callback registration intel-idle: Fix CPU hotplug callback registration clocksource, dummy-timer: Fix CPU hotplug callback registration drivers/base/topology.c: Fix CPU hotplug callback registration acpi-cpufreq: Fix CPU hotplug callback registration zsmalloc: Fix CPU hotplug callback registration scsi, fcoe: Fix CPU hotplug callback registration scsi, bnx2fc: Fix CPU hotplug callback registration scsi, bnx2i: Fix CPU hotplug callback registration ...
2014-03-31Merge branch 'perf-core-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull perf changes from Ingo Molnar: "Main changes: Kernel side changes: - Add SNB/IVB/HSW client uncore memory controller support (Stephane Eranian) - Fix various x86/P4 PMU driver bugs (Don Zickus) Tooling, user visible changes: - Add several futex 'perf bench' microbenchmarks (Davidlohr Bueso) - Speed up thread map generation (Don Zickus) - Introduce 'perf kvm --list-cmds' command line option for use by scripts (Ramkumar Ramachandra) - Print the evsel name in the annotate stdio output, prep to fix support outputting annotation for multiple events, not just for the first one (Arnaldo Carvalho de Melo) - Allow setting preferred callchain method in .perfconfig (Jiri Olsa) - Show in what binaries/modules 'perf probe's are set (Masami Hiramatsu) - Support distro-style debuginfo for uprobe in 'perf probe' (Masami Hiramatsu) Tooling, internal changes and fixes: - Use tid in mmap/mmap2 events to find maps (Don Zickus) - Record the reason for filtering an address_location (Namhyung Kim) - Apply all filters to an addr_location (Namhyung Kim) - Merge al->filtered with hist_entry->filtered in report/hists (Namhyung Kim) - Fix memory leak when synthesizing thread records (Namhyung Kim) - Use ui__has_annotation() in 'report' (Namhyung Kim) - hists browser refactorings to reuse code accross UIs (Namhyung Kim) - Add support for the new DWARF unwinder library in elfutils (Jiri Olsa) - Fix build race in the generation of bison files (Jiri Olsa) - Further streamline the feature detection display, trimming it a bit to show just the libraries detected, using VF=1 gets a more verbose output, showing the less interesting feature checks as well (Jiri Olsa). - Check compatible symtab type before loading dso (Namhyung Kim) - Check return value of filename__read_debuglink() (Stephane Eranian) - Move some hashing and fs related code from tools/perf/util/ to tools/lib/ so that it can be used by more tools/ living utilities (Borislav Petkov) - Prepare DWARF unwinding code for using an elfutils alternative unwinding library (Jiri Olsa) - Fix DWARF unwind max_stack processing (Jiri Olsa) - Add dwarf unwind 'perf test' entry (Jiri Olsa) - 'perf probe' improvements including memory leak fixes, sharing the intlist class with other tools, uprobes/kprobes code sharing and use of ref_reloc_sym (Masami Hiramatsu) - Shorten sample symbol resolving by adding cpumode to struct addr_location (Arnaldo Carvalho de Melo) - Fix synthesizing mmaps for threads (Don Zickus) - Fix invalid output on event group stdio report (Namhyung Kim) - Fixup header alignment in 'perf sched latency' output (Ramkumar Ramachandra) - Fix off-by-one error in 'perf timechart record' argv handling (Ramkumar Ramachandra) Tooling, cleanups: - Remove unused thread__find_map function (Jiri Olsa) - Remove unused simple_strtoul() function (Ramkumar Ramachandra) Tooling, documentation updates: - Update function names in debug messages (Ramkumar Ramachandra) - Update some code references in design.txt (Ramkumar Ramachandra) - Clarify load-latency information in the 'perf mem' docs (Andi Kleen) - Clarify x86 register naming in 'perf probe' docs (Andi Kleen)" * 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (96 commits) perf tools: Remove unused simple_strtoul() function perf tools: Update some code references in design.txt perf evsel: Update function names in debug messages perf tools: Remove thread__find_map function perf annotate: Print the evsel name in the stdio output perf report: Use ui__has_annotation() perf tools: Fix memory leak when synthesizing thread records perf tools: Use tid in mmap/mmap2 events to find maps perf report: Merge al->filtered with hist_entry->filtered perf symbols: Apply all filters to an addr_location perf symbols: Record the reason for filtering an address_location perf sched: Fixup header alignment in 'latency' output perf timechart: Fix off-by-one error in 'record' argv handling perf machine: Factor machine__find_thread to take tid argument perf tools: Speed up thread map generation perf kvm: introduce --list-cmds for use by scripts perf ui hists: Pass evsel to hpp->header/width functions explicitly perf symbols: Introduce thread__find_cpumode_addr_location perf session: Change header.misc dump from decimal to hex perf ui/tui: Reuse generic __hpp__fmt() code ...
2014-03-20x86, intel, uncore: Fix CPU hotplug callback registrationSrivatsa S. Bhat
Subsystems that want to register CPU hotplug callbacks, as well as perform initialization for the CPUs that are already online, often do it as shown below: get_online_cpus(); for_each_online_cpu(cpu) init_cpu(cpu); register_cpu_notifier(&foobar_cpu_notifier); put_online_cpus(); This is wrong, since it is prone to ABBA deadlocks involving the cpu_add_remove_lock and the cpu_hotplug.lock (when running concurrently with CPU hotplug operations). Instead, the correct and race-free way of performing the callback registration is: cpu_notifier_register_begin(); for_each_online_cpu(cpu) init_cpu(cpu); /* Note the use of the double underscored version of the API */ __register_cpu_notifier(&foobar_cpu_notifier); cpu_notifier_register_done(); Fix the uncore code in intel-x86 by using this latter form of callback registration. Cc: Peter Zijlstra <peterz@infradead.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Ingo Molnar <mingo@kernel.org> Cc: Arnaldo Carvalho de Melo <acme@ghostprotocols.net> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: "H. Peter Anvin" <hpa@zytor.com> Signed-off-by: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-03-14perf/x86/uncore: Fix missing end markers for SNB/IVB/HSW IMC PMUStephane Eranian
This patch fixes a bug with the SNB/IVB/HSW uncore mmeory controller support. The PCI Ids tables for the memory controller were missing end markers. That could cause random crashes on boot during or after PCI device registration. Signed-off-by: Stephane Erainan <eranian@google.com> Cc: peterz@infradead.org Cc: zheng.z.yan@intel.com Cc: bp@alien8.de Cc: ak@linux.intel.com Link: http://lkml.kernel.org/r/20140313120436.GA14236@quad Signed-off-by: Ingo Molnar <mingo@kernel.org> --
2014-03-12perf/x86/uncore: Fix compilation warning in snb_uncore_imc_init_box()Stephane Eranian
This patch fixes a compilation problem (unused variable) with the new SNB/IVB/HSW uncore IMC code. [ In -v2 we simplify the fix as suggested by Peter Zjilstra. ] Reported-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Stephane Eranian <eranian@google.com> Signed-off-by: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20140311235329.GA28624@quad Signed-off-by: Ingo Molnar <mingo@kernel.org>
2014-03-11perf/x86: Fix leak in uncore_type_init failure pathsDave Jones
The error path of uncore_type_init() frees up any allocations that were made along the way, but it relies upon type->pmus being set, which only happens if the function succeeds. As type->pmus remains null in this case, the call to uncore_type_exit will do nothing. Moving the assignment earlier will allow us to actually free those allocations should something go awry. Signed-off-by: Dave Jones <davej@fedoraproject.org> Acked-by: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20140306172028.GA552@redhat.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
2014-03-11perf/x86/uncore: Add __init for uncore_cpumask_init()Dongsheng Yang
Commit: 411cf180fa00 perf/x86/uncore: fix initialization of cpumask introduced the function uncore_cpumask_init(), which is only called in __init intel_uncore_init(). But it is not marked with __init, which produces the following warning: WARNING: vmlinux.o(.text+0x2464a): Section mismatch in reference from the function uncore_cpumask_init() to the function .init.text:uncore_cpu_setup() The function uncore_cpumask_init() references the function __init uncore_cpu_setup(). This is often because uncore_cpumask_init lacks a __init annotation or the annotation of uncore_cpu_setup is wrong. This patch marks uncore_cpumask_init() with __init. Signed-off-by: Dongsheng Yang <yangds.fnst@cn.fujitsu.com> Acked-by: Stephane Eranian <eranian@google.com> Signed-off-by: Peter Zijlstra <peterz@infradead.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Arnaldo Carvalho de Melo <acme@ghostprotocols.net> Cc: "H. Peter Anvin" <hpa@zytor.com> Link: http://lkml.kernel.org/r/1394013516-4964-1-git-send-email-yangds.fnst@cn.fujitsu.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
2014-02-27Merge branch 'perf/urgent' into perf/coreIngo Molnar
Merge the latest fixes before queueing up new changes. Signed-off-by: Ingo Molnar <mingo@kernel.org>
2014-02-21perf/x86/uncore: Fix IVT/SNB-EP uncore CBOX NID filter tableStephane Eranian
This patch updates the CBOX PMU filters mapping tables for SNB-EP and IVT (model 45 and 62 respectively). The NID umask always comes in addition to another umask. When set, the NID filter is applied. The current mapping tables were missing some code/umask combinations to account for the NID umask. This patch fixes that. Cc: mingo@elte.hu Cc: ak@linux.intel.com Reviewed-by: Yan, Zheng <zheng.z.yan@intel.com> Signed-off-by: Stephane Eranian <eranian@google.com> Signed-off-by: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20140219131018.GA24475@quad Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2014-02-21perf/x86/uncore: use MiB unit for events for SNB/IVB/HSW IMCStephane Eranian
This patch makes perf use Mebibytes to display the counts of uncore_imc/data_reads/ and uncore_imc/data_writes. 1MiB = 1024*1024 bytes. Cc: mingo@elte.hu Cc: acme@redhat.com Cc: ak@linux.intel.com Cc: zheng.z.yan@intel.com Cc: peterz@infradead.org Signed-off-by: Stephane Eranian <eranian@google.com> Signed-off-by: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/1392132015-14521-9-git-send-email-eranian@google.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2014-02-21perf/x86/uncore: add hrtimer to SNB uncore IMC PMUStephane Eranian
This patch is needed because that PMU uses 32-bit free running counters with no interrupt capabilities. On SNB/IVB/HSW, we used 20GB/s theoretical peak to calculate the hrtimer timeout necessary to avoid missing an overflow. That delay is set to 5s to be on the cautious side. The SNB IMC uses free running counters, which are handled via pseudo fixed counters. The SNB IMC PMU implementation supports an arbitrary number of events, because the counters are read-only. Therefore it is not possible to track active counters. Instead we put active events on a linked list which is then used by the hrtimer handler to update the SW counts. Cc: mingo@elte.hu Cc: acme@redhat.com Cc: ak@linux.intel.com Cc: zheng.z.yan@intel.com Cc: peterz@infradead.org Signed-off-by: Stephane Eranian <eranian@google.com> Signed-off-by: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/1392132015-14521-8-git-send-email-eranian@google.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2014-02-21perf/x86/uncore: add SNB/IVB/HSW client uncore memory controller supportStephane Eranian
This patch adds a new uncore PMU for Intel SNB/IVB/HSW client CPUs. It adds the Integrated Memory Controller (IMC) PMU. This new PMU provides a set of events to measure memory bandwidth utilization. The IMC on those processor is PCI-space based. This patch exposes a new uncore PMU on those processor: uncore_imc Two new events are defined: - name: data_reads - code: 0x1 - unit: 64 bytes - number of full cacheline read requests to the IMC - name: data_writes - code: 0x2 - unit: 64 bytes - number of full cacheline write requests to the IMC Documentation available at: http://software.intel.com/en-us/articles/monitoring-integrated-memory-controller-requests-in-the-2nd-3rd-and-4th-generation-intel Cc: mingo@elte.hu Cc: acme@redhat.com Cc: ak@linux.intel.com Cc: zheng.z.yan@intel.com Cc: peterz@infradead.org Signed-off-by: Stephane Eranian <eranian@google.com> Signed-off-by: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/1392132015-14521-7-git-send-email-eranian@google.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2014-02-21perf/x86/uncore: move uncore_event_to_box() and uncore_pmu_to_box()Stephane Eranian
Move a couple of functions around to avoid forward declarations when we add code later on. Cc: mingo@elte.hu Cc: acme@redhat.com Cc: ak@linux.intel.com Cc: zheng.z.yan@intel.com Cc: peterz@infradead.org Signed-off-by: Stephane Eranian <eranian@google.com> Signed-off-by: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/1392132015-14521-6-git-send-email-eranian@google.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2014-02-21perf/x86/uncore: make hrtimer timeout configurable per boxStephane Eranian
This patch makes the hrtimer timeout configurable per PMU box. Not all counters have necessarily the same width and rate, thus the default timeout of 60s may need to be adjusted. This patch adds box->hrtimer_duration. It is set to default when the box is allocated. It can be overriden when the box is initialized. Cc: mingo@elte.hu Cc: acme@redhat.com Cc: ak@linux.intel.com Cc: zheng.z.yan@intel.com Cc: peterz@infradead.org Signed-off-by: Stephane Eranian <eranian@google.com> Signed-off-by: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/1392132015-14521-5-git-send-email-eranian@google.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2014-02-21perf/x86/uncore: add ability to customize pmu callbacksStephane Eranian
This patch enables custom struct pmu callbacks per uncore PMU types. This feature may be used to simplify counter setup for certain uncore PMUs which have free running counters for instance. It becomes possible to bypass the event scheduling phase of the configuration. Cc: mingo@elte.hu Cc: acme@redhat.com Cc: ak@linux.intel.com Cc: zheng.z.yan@intel.com Cc: peterz@infradead.org Signed-off-by: Stephane Eranian <eranian@google.com> Signed-off-by: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/1392132015-14521-3-git-send-email-eranian@google.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2014-02-21perf/x86/uncore: fix initialization of cpumaskStephane Eranian
On certain processors, the uncore PMU boxes may only be msr-bsed or PCI-based. But in both cases, the cpumask, suggesting on which CPUs to monitor to get full coverage of the particular PMU, must be created. However with the current code base, the cpumask was only created on processor which had at least one MSR-based uncore PMU. This patch removes that restriction and ensures the cpumask is created even when there is no msr-based PMU. For instance, on SNB client where only a PCI-based memory controller PMU is supported. Cc: mingo@elte.hu Cc: acme@redhat.com Cc: ak@linux.intel.com Cc: zheng.z.yan@intel.com Cc: peterz@infradead.org Signed-off-by: Stephane Eranian <eranian@google.com> Signed-off-by: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/1392132015-14521-2-git-send-email-eranian@google.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2013-11-06perf/x86/intel: Add Ivy Bridge-EP uncore IRP box supportYan, Zheng
Unlike other uncore boxes, IRP boxes live in PCI buses with no UBOX device. For PCI bus without UBOX device, we find the next bus that has UBOX device and use its 'bus to socket' mapping. Besides the counter/control registers in IRP boxes are not properly aligned. Signed-off-by: Yan, Zheng <zheng.z.yan@intel.com> Signed-off-by: Peter Zijlstra <peterz@infradead.org> Cc: eranian@google.com Cc: "Yan Zheng" <zheng.z.yan@intel.com> Link: http://lkml.kernel.org/r/1383197815-17706-2-git-send-email-zheng.z.yan@intel.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
2013-11-06perf/x86/intel/uncore: Add filter support for IvyBridge-EP QPI boxesYan, Zheng
The encoding for filter registers of IvyBridge-EP uncore QPI boxes is completely the same as SandyBridge-EP. Signed-off-by: Yan, Zheng <zheng.z.yan@intel.com> Signed-off-by: Peter Zijlstra <peterz@infradead.org> Cc: eranian@google.com Cc: "Yan Zheng" <zheng.z.yan@intel.com> Link: http://lkml.kernel.org/r/1383197815-17706-1-git-send-email-zheng.z.yan@intel.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
2013-09-20perf/x86/intel/uncore: Don't use smp_processor_id() in validate_group()Yan, Zheng
uncore_validate_group() can't call smp_processor_id() because it is in preemptible context. Pass NUMA_NO_NODE to the allocator instead. Signed-off-by: Yan, Zheng <zheng.z.yan@intel.com> Signed-off-by: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/1379400493-11505-1-git-send-email-zheng.z.yan@intel.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
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