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2020-04-13tools/power turbostat: Fix gcc build warningsLen Brown
[ Upstream commit d8d005ba6afa502ca37ced5782f672c4d2fc1515 ] Warning: ‘__builtin_strncpy’ specified bound 20 equals destination size [-Wstringop-truncation] reduce param to strncpy, to guarantee that a null byte is always copied into destination buffer. Signed-off-by: Len Brown <len.brown@intel.com> Signed-off-by: Sasha Levin <sashal@kernel.org>
2019-09-21tools/power turbostat: fix buffer overrunNaoya Horiguchi
[ Upstream commit eeb71c950bc6eee460f2070643ce137e067b234c ] turbostat could be terminated by general protection fault on some latest hardwares which (for example) support 9 levels of C-states and show 18 "tADDED" lines. That bloats the total output and finally causes buffer overrun. So let's extend the buffer to avoid this. Signed-off-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com> Signed-off-by: Len Brown <len.brown@intel.com> Signed-off-by: Sasha Levin <sashal@kernel.org>
2019-05-14x86/cpu: Sanitize FAM6_ATOM namingPeter Zijlstra
commit f2c4db1bd80720cd8cb2a5aa220d9bc9f374f04e upstream Going primarily by: https://en.wikipedia.org/wiki/List_of_Intel_Atom_microprocessors with additional information gleaned from other related pages; notably: - Bonnell shrink was called Saltwell - Moorefield is the Merriefield refresh which makes it Airmont The general naming scheme is: FAM6_ATOM_UARCH_SOCTYPE for i in `git grep -l FAM6_ATOM` ; do sed -i -e 's/ATOM_PINEVIEW/ATOM_BONNELL/g' \ -e 's/ATOM_LINCROFT/ATOM_BONNELL_MID/' \ -e 's/ATOM_PENWELL/ATOM_SALTWELL_MID/g' \ -e 's/ATOM_CLOVERVIEW/ATOM_SALTWELL_TABLET/g' \ -e 's/ATOM_CEDARVIEW/ATOM_SALTWELL/g' \ -e 's/ATOM_SILVERMONT1/ATOM_SILVERMONT/g' \ -e 's/ATOM_SILVERMONT2/ATOM_SILVERMONT_X/g' \ -e 's/ATOM_MERRIFIELD/ATOM_SILVERMONT_MID/g' \ -e 's/ATOM_MOOREFIELD/ATOM_AIRMONT_MID/g' \ -e 's/ATOM_DENVERTON/ATOM_GOLDMONT_X/g' \ -e 's/ATOM_GEMINI_LAKE/ATOM_GOLDMONT_PLUS/g' ${i} done Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> 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> Cc: dave.hansen@linux.intel.com Cc: len.brown@intel.com Signed-off-by: Ingo Molnar <mingo@kernel.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-04-20tools/power turbostat: return the exit status of a commandDavid Arcari
[ Upstream commit 2a95496634a017c19641f26f00907af75b962f01 ] turbostat failed to return a non-zero exit status even though the supplied command (turbostat <command>) failed. Currently when turbostat forks a command it returns zero instead of the actual exit status of the command. Modify the code to return the exit status. Signed-off-by: David Arcari <darcari@redhat.com> Acked-by: Len Brown <len.brown@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Signed-off-by: Sasha Levin <sashal@kernel.org>
2018-10-10tools/power turbostat: fix possible sprintf buffer overflowLen Brown
commit 46c2797826cc6d1ae36fcbd966e76f9fa1907eef upstream. Signed-off-by: Len Brown <len.brown@intel.com> Cc: Alakesh Haloi <alakeshh@amazon.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-09-05tools/power turbostat: Read extended processor family from CPUIDCalvin Walton
[ Upstream commit 5aa3d1a20a233d4a5f1ec3d62da3f19d9afea682 ] This fixes the reported family on modern AMD processors (e.g. Ryzen, which is family 0x17). Previously these processors all showed up as family 0xf. See the document https://support.amd.com/TechDocs/56255_OSRR.pdf section CPUID_Fn00000001_EAX for how to calculate the family from the BaseFamily and ExtFamily values. This matches the code in arch/x86/lib/cpu.c Signed-off-by: Calvin Walton <calvin.walton@kepstin.ca> Signed-off-by: Len Brown <len.brown@intel.com> Signed-off-by: Sasha Levin <alexander.levin@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-09-05tools/power turbostat: fix -S on UP systemsLen Brown
[ Upstream commit 9d83601a9cc1884d1b5706ee2acc661d558c6838 ] The -S (system summary) option failed to print any data on a 1-processor system. Reported-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: Len Brown <len.brown@intel.com> Signed-off-by: Sasha Levin <alexander.levin@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-10-18Revert "tools/power turbostat: stop migrating, unless '-m'"Len Brown
This reverts commit c91fc8519d87715a3a173475ea3778794c139996. That change caused a C6 and PC6 residency regression on large idle systems. Users also complained about new output indicating jitter: turbostat: cpu6 jitter 3794 9142 Signed-off-by: Len Brown <len.brown@intel.com> Cc: 4.13+ <stable@vger.kernel.org> # v4.13+ Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2017-06-24tools/power turbostat: update version numberLen Brown
Signed-off-by: Len Brown <len.brown@intel.com>
2017-06-24tools/power turbostat: decode MSR_IA32_MISC_ENABLE only on IntelLen Brown
otherwise, turbostat bails on on AMD Opteron boxes: turbostat: cpu26: msr offset 0x1a0 read failed: Input/output error Reported-by: Kamil Kolakowski <kkolakow@redhat.com> Signed-off-by: Len Brown <len.brown@intel.com>
2017-06-24tools/power turbostat: stop migrating, unless '-m'Len Brown
Turbostat has the capability to set its own affinity to each CPU so that its MSR accesses are on the local CPU. However, using the in-kernel cross-call in the msr driver tends to be less invasive, so do that -- by-default. '-m' remains to get the old behaviour. Signed-off-by: Len Brown <len.brown@intel.com>
2017-06-23tools/power turbostat: if --debug, print sampling overheadLen Brown
The --debug option now pre-pends each row with the number of micro-seconds [usec] to collect the finishing snapshot for that row. Signed-off-by: Len Brown <len.brown@intel.com>
2017-06-23tools/power turbostat: hide SKL counters, when not requestedLen Brown
Skylake has some new counters, and they were erroneously exempt from --show and --hide eg. turbostat --quiet --show CPU CPU Totl%C0 Any%C0 GFX%C0 CPUGFX% - 116.73 90.56 85.69 79.00 0 117.78 91.38 86.47 79.71 2 1 3 is now CPU - 0 2 1 3 Signed-off-by: Len Brown <len.brown@intel.com>
2017-04-12tools/power turbostat: update version numberLen Brown
Signed-off-by: Len Brown <len.brown@intel.com>
2017-04-12tools/power turbostat: fix impossibly large CPU%c1 valueLen Brown
Most CPUs do not have a hardware c1 counter, and so turbostat derives c1 residency: c1 = TSC - MPERF - other_core_cstate_counters As it is not possible to atomically read these coutners, measurement jitter can case this calcuation to "go negative" when very close to 0. Turbostat detect that case and simply prints c1 = 0.00% But that check neglected to account for systems where the TSC crystal clock domain and the MPERF BCLK domain are differ by a small amount. That allowed very small negative c1 numbers to escape this check and be printed as huge positve numbers. This code begs for a bit of cleanup, but this patch is the minimal change to fix the issue. Signed-off-by: Len Brown <len.brown@intel.com>
2017-04-12tools/power turbostat: update HWP dump to decimal from hexLen Brown
Syntax only. The HWP CAPABILTIES and REQUEST ratios are more easily viewed in decimal -- just multiply by 100 and you get MHz... new: cpu0: MSR_HWP_CAPABILITIES: 0x010c1b23 (high 35 guar 27 eff 12 low 1) cpu0: MSR_HWP_REQUEST: 0x80002301 (min 1 max 35 des 0 epp 0x80 window 0x0 pkg 0x0) old: cpu0: MSR_HWP_CAPABILITIES: 0x010c1b23 (high 0x23 guar 0x1b eff 0xc low 0x1) cpu0: MSR_HWP_REQUEST: 0x80002301 (min 0x1 max 0x23 des 0x0 epp 0x80 window 0x0 pkg 0x0) Signed-off-by: Len Brown <len.brown@intel.com>
2017-04-12tools/power turbostat: enable package THERM_INTERRUPT dumpLen Brown
cpu0: MSR_IA32_TEMPERATURE_TARGET: 0x00641400 (100 C) cpu0: MSR_IA32_PACKAGE_THERM_STATUS: 0x884b0800 (25 C) cpu0: MSR_IA32_PACKAGE_THERM_INTERRUPT: 0x00000003 (100 C, 100 C) Enable the same per-core output, but hide it behind --debug because it is too verbose on big systems. Signed-off-by: Len Brown <len.brown@intel.com>
2017-04-12tools/power turbostat: show missing Core and GFX power on SKL and KBLLen Brown
While the current SDM is silent on the matter, the Core and GFX RAPL power meters on SKL and KBL appear to work -- so show them. Reported-by: Yaroslav Isakov <yaroslav.isakov@gmail.com> Signed-off-by: Len Brown <len.brown@intel.com>
2017-03-04tools/power turbostat: bugfix: GFXMHz column not changingLen Brown
turbostat displays a GFXMHz column, which comes from reading /sys/class/graphics/fb0/device/drm/card0/gt_cur_freq_mhz But GFXMHz was not changing, even when a manual cat /sys/class/graphics/fb0/device/drm/card0/gt_cur_freq_mhz showed a new value. It turns out that a rewind() on the open file is not sufficient, fflush() (or a close/open) is needed to read fresh values. Reported-by: Yaroslav Isakov <yaroslav.isakov@gmail.com> Signed-off-by: Len Brown <len.brown@intel.com>
2017-03-01tools/power turbostat: version 17.02.24Len Brown
The turbostat before this last set of changes is obsolete. This new version can do a lot more, but it also has some different defaults, that might catch some off-guard. So it seems a good time to give a new version number. Signed-off-by: Len Brown <len.brown@intel.com>
2017-03-01tools/power turbostat: bugfix: --add u32 was printed as u64Len Brown
When the "u32" keyword is used with --add, it means that the output should be truncated to 32-bits. This was not happening and all 64-bits were printed. Also, when no column name was used for an added MSR, The default column name was in deximal, eg. MSR16. Users report that they tend to use hex MSR numbers, so print them in hex. To always fit into the columns, use the syntax M0x10. Note that the user can always supply any column header that they want. eg --add msr0x10,MY_TSC Signed-off-by: Len Brown <len.brown@intel.com>
2017-03-01tools/power turbostat: show error on execLen Brown
When turbostat is run in one-shot command mode, the parent takes the 'before' counter snapshot, fork/exec/wait for the child to exit, takes the 'after' counter snapshot, and prints the results. however, if the child fails to exec the command, it immediately returns, without indicating that anythign was wrong. Add an error message showing that exec failed: sudo turbostat sleeeep 4 ... turbostat: exec sleeeep: No such file or directory ... Note that the parent will still print out the statistics, because it can't tell the difference between the failed exec and a command that is purposefully returning the same status. Unfortunately, this may obscure the error message. However, if the --out parameter is used, the error message is evident on stderr. Reported-by: Wendy Wang <wendy.wang@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2017-03-01tools/power turbostat: dump p-state software configLen Brown
cpu1: cpufreq driver: acpi-cpufreq cpu1: cpufreq governor: ondemand cpufreq boost: 1 or cpu0: cpufreq driver: intel_pstate cpu0: cpufreq governor: powersave cpufreq intel_pstate no_turbo: 0 Signed-off-by: Len Brown <len.brown@intel.com>
2017-03-01tools/power turbostat: show package number, even without --debugLen Brown
On multi-package systems, the "Package" column was being displayed only if --debug was used. Show it always. Signed-off-by: Len Brown <len.brown@intel.com>
2017-03-01tools/power turbostat: support "--hide C1" etc.Len Brown
Originally, the only way to hide the sysfs C-state statistics columns was with "--hide sysfs". This was because we process "--hide" before we probe for those columns. hack --hide to remember deferred hide requests, and apply them when sysfs is probed. "--hide sysfs" is still available as short-hand to refer to the entire group of counters. The down-side of this change is that we no longer error check for bogus --hide column names. But the user will quickly figure that out if a column they mean to hide is still there... Signed-off-by: Len Brown <len.brown@intel.com>
2017-03-01tools/power turbostat: move --Package and --processor into the --cpu optionLen Brown
--Package is now "--cpu package", which will display just the 1st CPU in each package --processor is not "--cpu core" which will display just the 1st CPU in each core Signed-off-by: Len Brown <len.brown@intel.com>
2017-03-01tools/power turbostat: update --list featureLen Brown
Make it possible to take the entire un-edited output from `turbostat --list` and feed it to "turbostat --show" or "turbostat --hide". To do this, the leading comma was removed (no mater what columns are active) and also they dynamic C-state "C1, C2, C3" etc are replaced by the string "sysfs", which refers to them as a group. Signed-off-by: Len Brown <len.brown@intel.com>
2017-03-01tools/power turbostat: use wide columns to display large numbersLen Brown
When a counter overlfows 7 columns, it shifts the remaining columns to the right, so they no longer line up under their column header. Update turbostat to dectect when it is handling large numbers, and switch to wider columns where, necessary. Reported-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2017-03-01tools/power turbostat: Add --list option to show available header namesLen Brown
It is handy to know the list of column header names, so that they can be used with --add and --skip The new --list option shows them: sudo ./turbostat --list --hide sysfs ,Core,CPU,Avg_MHz,Busy%,Bzy_MHz,TSC_MHz,IRQ,SMI,CPU%c1,CPU%c3,CPU%c6,CPU%c7,CoreTmp,PkgTmp,GFX%rc6,GFXMHz,PkgWatt,CorWatt,GFXWatt Signed-off-by: Len Brown <len.brown@intel.com>
2017-03-01tools/power turbostat: fix zero IRQ count shown in one-shot command modeLen Brown
The IRQ column has been working for periodic mode, but not in one-shot command mode, it shows only 0. until now. Signed-off-by: Len Brown <len.brown@intel.com>
2017-03-01tools/power turbostat: add --cpu parameterLen Brown
With the --cpu parameter, turbostat prints only lines for the specified set of CPUs: sudo ./turbostat --quiet --show Core,CPU --cpu 0,1,3..5,6-7 Core CPU - - 0 0 0 4 1 1 1 5 2 6 3 3 3 7 Signed-off-by: Len Brown <len.brown@intel.com>
2017-03-01tools/power turbostat: print sysfs C-state statsLen Brown
When turbostat shows % of time in a CPU idle power state, it has always been showing information from underlying hardware residency counters. While this reflects what the hardware is doing, and is thus useful for understanding the hardware, it doesn't directly tell us what Linux requested -- which is useful for tuning Linux itself. Here we add columns to turbostat to show the Linux cpuidle sub-system statistics: /sys/devices/system/cpu/cpu*/cpuidle/state*/* The first group of columns are the "usage", which is the number of times software requested that C-state in the measurement interval. eg C1 below. The second group of columns are the "time", which is the percentage of the measurement interval time that software has requested the specified C-state. eg C1% below. These software counters can be compared to the underlying hardware residency counters (eg CPU%c1 CPU%c3 CPU%c6 CPU%c7) to compare what sofware requested to what the hardware delivered. These sysfs attributes are discovered when turbostat starts, rather than being "built in". So the --show and --hide parameters do not know about these dynamic column names. However "--show sysfs" and "--hide sysfs" act on the entire group of columns: turbostat --show sysfs ... cpu4: POLL: CPUIDLE CORE POLL IDLE cpu4: C1: MWAIT 0x00 cpu4: C1E: MWAIT 0x01 cpu4: C3: MWAIT 0x10 cpu4: C6: MWAIT 0x20 cpu4: C7s: MWAIT 0x32 ... C1 C1E C3 C6 C7s C1% C1E% C3% C6% C7s% 3 6 5 1 188 0.00 0.02 0.00 0.00 99.93 0 6 5 0 58 0.00 0.16 0.02 0.00 99.70 0 0 0 0 9 0.00 0.00 0.00 0.00 99.96 0 0 0 1 24 0.00 0.00 0.00 0.02 99.93 0 0 0 0 9 0.00 0.00 0.00 0.00 99.97 0 0 0 0 32 0.00 0.00 0.00 0.00 99.96 0 0 0 0 7 0.00 0.00 0.00 0.00 99.98 2 0 0 0 36 0.00 0.00 0.00 0.00 99.97 1 0 0 0 13 0.00 0.00 0.00 0.00 99.98 Signed-off-by: Len Brown <len.brown@intel.com>
2017-03-01tools/power turbostat: extend --add option to accept /sys pathLen Brown
Previously, the --add option could specify only an MSR. Here is is extended so an arbitrary /sys attribute, as specified by an absolute file path name. sudo ./turbostat --add /sys/devices/system/cpu/cpu0/cpuidle/state5/usage Signed-off-by: Len Brown <len.brown@intel.com>
2017-03-01tools/power turbostat: skip unused counters on BDXLen Brown
Skip these two counters on BDX, as they are always zero: cc7, pc7 Signed-off-by: Len Brown <len.brown@intel.com>
2017-03-01tools/power turbostat: fix decoding for GLM, DNV, SKX turbo-ratio limitsLen Brown
Newer processors do not hard-code the the number of cpus in each bin to {1, 2, 3, 4, 5, 6, 7, 8} Rather, they can specify any number of CPUS in each of the 8 bins: eg. ... 37 * 100.0 = 3600.0 MHz max turbo 4 active cores 38 * 100.0 = 3700.0 MHz max turbo 3 active cores 39 * 100.0 = 3800.0 MHz max turbo 2 active cores 39 * 100.0 = 3900.0 MHz max turbo 1 active cores could now look something like this: ... 37 * 100.0 = 3600.0 MHz max turbo 16 active cores 38 * 100.0 = 3700.0 MHz max turbo 8 active cores 39 * 100.0 = 3800.0 MHz max turbo 4 active cores 39 * 100.0 = 3900.0 MHz max turbo 2 active cores Signed-off-by: Len Brown <len.brown@intel.com>
2017-03-01tools/power turbostat: skip unused counters on SKXLen Brown
Skip these four counters on SKX, as they are always zero: cc3, pc3 cc7, pc7 Signed-off-by: Len Brown <len.brown@intel.com>
2017-03-01tools/power turbostat: Denverton: use HW CC1 counter, skip C3, C7Len Brown
The CC1 column in tubostat can be computed by subtracting the core c-state residency countes from the total Cx residency. CC1 = (Idle_time_as_measured by MPERF) - (all core C-states with residency counters) However, as the underlying counter reads are not atomic, error can be noticed in this calculations, especially when the numbers are small. Denverton has a hardware CC1 residency counter to improve the accuracy of the cc1 statistic -- use it. At the same time, Denverton has no concept of CC3, PC3, CC7, PC7, so skip collecting and printing those columns. Finally, a note of clarification. Turbostat prints the standard PC2 residency counter, but on Denverton hardware, that actually means PC1E. Turbostat prints the standard PC6 residency counter, but on Denverton hardware, that actually means PC2. At this point, we document that differnce in this commit message, rather than adding a quirk to the software. Signed-off-by: Len Brown <len.brown@intel.com>
2017-03-01tools/power turbostat: initial Gemini Lake SOC supportLen Brown
Gemini Lake is similar to Apollo Lake (Broxton/Goldmont) Signed-off-by: Len Brown <len.brown@intel.com>
2017-03-01tools/power turbostat: bug fixes to --add, --show/--hide featuresLen Brown
Fix a bug with --add, where the title of the column is un-initialized if not specified by the user. The initial implementation of --show and --hide neglected to handle the pc8/pc9/pc10 counters. Fix a bug where "--show Core" only worked with --debug Reported-by: Wendy Wang <wendy.wang@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2017-03-01tools/power turbostat: use tsc_tweak everwhere it is neededLen Brown
The CPU ticks at a rate in the "bus clock" domain. eg. 100 MHz * bus_ratio. On newer processors, the TSC has been moved out of this BCLK domain and into a separate crystal-clock domain. While the TSC ticks "close to" the base frequency, those that look closely at the numbers will notice small errors in calculations that mix units of TSC clocks and bus clocks. "tsc_tweak" was introduced to address the most visible mixing -- the %Busy and the the Busy_MHz calculations. (A simplification as since removed TSC from the BusyMHz calculation) Here we apply the tsc_tweak to everyplace where BCLK and TSC units are mixed. The results is that on a system which is 100% idle, the sum of the C-states are now much more likely to be closer to 100%. Reported-by: Travis Downs <travis.downs@gmail.com> Signed-off-by: Len Brown <len.brown@intel.com>
2017-03-01tools/power turbostat: print system config, unless --quietLen Brown
Some users want turbostat to tell them everything, by default. Some users want turbostat to be quiet, by default. I find that I'm in the 1st camp, and so I've never liked needing to type the --debug parameter to decode the system configuration. So here we change the default and print the system configuration, by default. (The --debug option is now un-documented, though it does still exist for debugging turbostat internals) When you do not want to see the system configuration header, use the new "--quiet" option. Signed-off-by: Len Brown <len.brown@intel.com>
2017-03-01tools/power turbostat: show all columns, independent of --debugLen Brown
Some time ago, turbostat overflowed 80 columns. So on the assumption that a "casual" user would always want topology and frequency columns, we hid the rest of the columns and the system configuration decoding behind the --debug option. Not everybody liked that change -- including me. I use --debug 99% of the time... Well, now we have "-o file" to put turbostat output into a file, so unless you are watching real-time in a small window, column count is less frequently a factor. And more recently, we got the "--hide columnA,columnB" option to specify columns to skip. So now we "un-hide" the rest of the columns from behind --debug, and show them all, by default. Signed-off-by: Len Brown <len.brown@intel.com>
2017-03-01tools/power turbostat: decode MSR_MISC_FEATURE_CONTROLLen Brown
useful for observing if the BIOS disabled prefetch Not architectural, but docuemented as present on NHM, SNB and is present on others. Signed-off-by: Len Brown <len.brown@intel.com>
2017-03-01tools/power turbostat: decode CPUID(6).TURBOLen Brown
show the CPUID feature for turbo to clarify the case when it may not be shown in MISC_ENABLE CPUID(6): APERF, TURBO, DTS, PTM, No-HWP, No-HWPnotify, No-HWPwindow, No-HWPepp, No-HWPpkg, EPB cpu4: MSR_IA32_MISC_ENABLE: 0x00850089 (TCC EIST MWAIT TURBO) Signed-off-by: Len Brown <len.brown@intel.com>
2017-03-01tools/power turbostat: dump Atom P-states correctlyLen Brown
Turbostat dumps MSR_TURBO_RATIO_LIMIT on Core Architecture. But Atom Architecture uses MSR_ATOM_CORE_RATIOS and MSR_ATOM_CORE_TURBO_RATIOS. Signed-off-by: Len Brown <len.brown@intel.com>
2017-03-01tools/power turbostat: further decode MSR_IA32_MISC_ENABLELen Brown
Decode MISC_ENABLE.NO_TURBO, also use the #defines in msr-index.h for decoding this register cpu0: MSR_IA32_MISC_ENABLE: 0x00850089 (TCC EIST MWAIT TURBO) Although it is not architectural, decode also MSR_IA32_MISC_ENABLE.prefetch-disable (bit-9). documented to be present on: Core, P4, Intel-Xeon reserved on: Atom, Silvermont, Nehalem, SNB, PHI ec. Signed-off-by: Len Brown <len.brown@intel.com>
2017-03-01tools/power turbostat: add precision to --debug frequency outputLen Brown
Add a digit of precision to the --debug output for frequency range. This is useful when BCLK is not an integer. old: 6 * 83 = 500 MHz max efficiency frequency 26 * 83 = 2166 MHz base frequency new: 6 * 83.3 = 499.8 MHz max efficiency frequency 26 * 83.3 = 2165.8 MHz base frequency Signed-off-by: Len Brown <len.brown@intel.com>
2017-03-01tools/power turbostat: Baytrail c-state supportLen Brown
The Baytrail SOC, with its Silvermont core, has some unique properties: 1. a hardware CC1 residency counter 2. a module-c6 residency counter 3. a package-c6 counter at traditional package-c7 counter address. The SOC does not support c3, pc3, c7 or pc7 counters. Signed-off-by: Len Brown <len.brown@intel.com>
2017-03-01tools/power turbostat: use new name for MSR_PKG_CST_CONFIG_CONTROLLen Brown
Previously called MSR_NHM_SNB_PKG_CST_CFG_CTL Signed-off-by: Len Brown <len.brown@intel.com>
2017-02-25tools/power turbostat: update MSR_PKG_CST_CONFIG_CONTROL decodingLen Brown
AMT value 0 is unlimited, not PC0 Signed-off-by: Len Brown <len.brown@intel.com>
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