Turbostat features are now table-driven (Rui Zhang)
Add support for some new platforms (Sumeet Pawnikar, Rui Zhang)
Gracefully run in configs when CPUs are limited (Rui Zhang, Srinivas Pandruvada)
misc minor fixes.

Signed-off-by: Len Brown <len.brown@intel.com>

turbostat --show IPC

displays "inf" for the IPC column

turbostat was missing the explicit dependency of IPC on APERF,
and thus neglected to collect APERF when only IPC was requested.

typcial use:

turbostat --quiet --show CPU,IPC

Signed-off-by: Len Brown <len.brown@intel.com>

Add initial support for LunarLake platform.

It shares the same features with CannonLake.

Signed-off-by: Sumeet Pawnikar <sumeet.r.pawnikar@intel.com>

Add initial support for ArrowLake platform.

It shares the same features with CannonLake.

Signed-off-by: Sumeet Pawnikar <sumeet.r.pawnikar@intel.com>

Add initial support for GrandRidge.

It shares the same features as SierraForest, except that it does not
support PC2/PC6.

Signed-off-by: Zhang Rui <rui.zhang@intel.com>

Add initial support for SierraForest.

It shares the same features with SapphireRapids, except that it has
MSR_MODULE_C6_RES_MS support.

Signed-off-by: Zhang Rui <rui.zhang@intel.com>

Add initial support for GraniteRapids.

It shares the same features with SapphireRapids.

Signed-off-by: Zhang Rui <rui.zhang@intel.com>

Add MSR_CORE_C1_RES support for spr_features because both Sapphirerapids
and Emeraldrapids support this MSR.

Signed-off-by: Zhang Rui <rui.zhang@intel.com>

When available CPUs are reduced via cgroup cpuset controller, turbostat
will exit with errors (For example):
	get_counters: Could not migrate to CPU 0
	turbostat: re-initialized with num_cpus 20
	get_counters: Could not migrate to CPU 0
	turbostat: re-initialized with num_cpus 20

Move the turbostat to root cgroup, which has every CPU.

Writing the value 0 to a cgroup.procs file causes the writing
process to be moved to the corresponding cgroup.

Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Tested-by: Zhang Rui <rui.zhang@intel.com>

CPUs can be isolated via cgroup settings and turbostat should avoid
migrating to these CPUs, just like it does for the '-c' cpus.

Introduce cpu_effective_set to save the cgroup cpu limitation info from
/sys/fs/cgroup/cpuset.cpus.effective. And use cpu_allowed_set as the
intersection of cpu_present_set, cpu_effective_set and cpu_subset.

Signed-off-by: Zhang Rui <rui.zhang@intel.com>

Abstract parse_cpu_str() which can update any specified cpu_set by a
given cpu string. This can be used to handle further CPU limitations
from other sources like cgroup.

The cpu string parsing code is also enhanced to handle the strings that
have an extra '\n' before string terminator.

Signed-off-by: Zhang Rui <rui.zhang@intel.com>

It is possible that the cpu_subset contains offlined CPUs.

If this happens during start, exit immediately because this is likely an
operator error that is best fixed by re-invoking.
If this happens at runtime, give a warning only because turbostat should
do its best effort to continue running.

Signed-off-by: Zhang Rui <rui.zhang@intel.com>

System summary should summarize the information for allowed CPUs instead
of all the present CPUs.

Introduce topology information for allowed CPUs, and use them to
get system summary.

Signed-off-by: Zhang Rui <rui.zhang@intel.com>

Thread_id doesn't tell if a CPU is allowed or not.

Detect allowed CPUs only and use the first detected thread/core as the
primary thread/core of a core/package.

Signed-off-by: Zhang Rui <rui.zhang@intel.com>

When detecting the primary thread/core in a core/package, current code
doesn't handle the allowed CPUs.

Abstract several functions for further fix of this issue.

No functional change.

Signed-off-by: Zhang Rui <rui.zhang@intel.com>

Set turbostat CPU affinity to make sure turbostat is running on one of
the allowed CPUs.

Set base_cpu to the first allowed CPU so that some platform information
is dumped using one of the allowed CPUs.

Signed-off-by: Zhang Rui <rui.zhang@intel.com>

for_all_cpus/for_all_cpus_2 are used for accessing the per CPU counters,
and they should follow the cpu_allowed_set instead of cpu_present_set.

Signed-off-by: Zhang Rui <rui.zhang@intel.com>

Turbostat supports "-c" parameter which limits output to system summary
plus the specified cpu-set. But some code still uses cpu_present_set to
read and dump the counters.

Introduce cpu_allowed_set for code that should obey the specified cpu-set.

No functional change.

Signed-off-by: Zhang Rui <rui.zhang@intel.com>

Compared with other platforms that share cnl_features, ADL/RPL don't
have PC7/PC9.

Clone a new platform feature set from cnl_features for ADL/RPL, with
PC7/PC9 removed.

Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Reviewed-by: Len Brown <len.brown@intel.com>

All recent Intel client platforms have MSR_CORE_C1_RES. Enable the
support on these platforms, including CNL/ICL/LKF/RKL/TGL/ADL/RPL/MTL.

Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Reviewed-by: Len Brown <len.brown@intel.com>

Feature probe has nothing to do with CPUID, thus it should not be in
process_cpuids().

Introduce probe_pm_features() and move all feature probing functions
into it.

Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Reviewed-by: Len Brown <len.brown@intel.com>

Relocate more feature probing code outside of process_cpuids() into the
corresponding probing functions.

This improves the readability of code and the turbostat output.

Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Reviewed-by: Len Brown <len.brown@intel.com>

Reorder some functions to solve code depdency introduced by next patch.

No functional change.

Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Reviewed-by: Len Brown <len.brown@intel.com>

Introduce probe_thermal(), and move all thermal probing related code
into it.

Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Reviewed-by: Len Brown <len.brown@intel.com>

Introduce probe_lpi(), and move all lpi probing related code into it.

Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Reviewed-by: Len Brown <len.brown@intel.com>

Introduce probe_graphics(), and move all graphics probing related code
into it.

Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Reviewed-by: Len Brown <len.brown@intel.com>

Rename rapl_probe() to probe_rapl() to be consistent with other probing
function names.

Probe rapl after probing uncore frequency.

Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Reviewed-by: Len Brown <len.brown@intel.com>

Rename intel_uncore_frequency_probe() to probe_intel_uncore_frequency()
to be consistent with other probing function names.

Probe uncore frequency right after probing cstates.

Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Reviewed-by: Len Brown <len.brown@intel.com>

Introduce probe_pstates() and move all pstate probing related code into
it.

Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Reviewed-by: Len Brown <len.brown@intel.com>

Move all cstate probing related code into probe_cstates().

Note that dump_platform_info() actually dumps both MSR_PLATFORM_INFO and
MSR_IA32_POWER_CTL. MSR_PLATFORM_INFO is for pstate and
MSR_IA32_POWER_CTL is for cstate. So split dump_platform_info() and dump
MSR_IA32_POWER_CTL in probe_cstates().

Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Reviewed-by: Len Brown <len.brown@intel.com>

AMD/Hygon platforms that don't have RAPL use 'amd_features' to describe
the platform features. Unknown Intel platforms use 'default_features' to
describe the platform features.

As none of the platform feature is set for 'amd_features' or
'default_features', there is no need to maintain both of them.

Remove 'amd_features' structure and improve the logic in
probe_platform_features().

Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Reviewed-by: Len Brown <len.brown@intel.com>

Now CPU model checks have been cleaned up, no code depends on the
duplicated CPU model value.

Delete intel_model_duplicates().

Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Reviewed-by: Len Brown <len.brown@intel.com>

Abstract cstate prewake bit support.

Delete is_icx()/is_spr() CPU model checks.

Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Reviewed-by: Len Brown <len.brown@intel.com>

Abstract aperf/mperf multiplier support.

Delete is_knl() CPU model check.

Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Reviewed-by: Len Brown <len.brown@intel.com>

Abstract the support for MSR_PKG_WEIGHTED_CORE_C0_RES,
MSR_PKG_ANY_CORE_C0_RES, MSR_PKG_ANY_GFXE_C0_RES and
MSR_PKG_BOTH_CORE_GFXE_C0_RES.

Delete has_skl_msrs() CPU model check.

Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Reviewed-by: Len Brown <len.brown@intel.com>

Abstract the support for MSR_KNL_CORE_C6_RESIDENCY.

Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Reviewed-by: Len Brown <len.brown@intel.com>

Abstract the support for MSR_ATOM_PKG_C6_RESIDENCY.

Delete is_slm() CPU model check.

Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Reviewed-by: Len Brown <len.brown@intel.com>

Abstract the support for MSR_CC6/MC6_DEMOTION_POLICY_CONFIG.

Delete has_slv_msrs() CPU model check.

Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Reviewed-by: Len Brown <len.brown@intel.com>

Abstract MSR_MODULE_C6_RES_MS support.

Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Reviewed-by: Len Brown <len.brown@intel.com>

Abstract the support for MSR_CORE_C1_RES.

Delete is_dnv() CPU model check.

Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Reviewed-by: Len Brown <len.brown@intel.com>