Messages in this thread | | | From | Len Brown <> | Subject | [PATCH 0/22] v5 multi-die/package topology support | Date | Mon, 6 May 2019 17:25:55 -0400 |
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This patch series does 4 things.
1. Parse the new CPUID.1F leaf to discover multi-die/package topology
2. Export multi-die topology inside the kernel
3. Update 4 places (coretemp, pkgtemp, rapl, perf) that that need to know the difference between die and package-scope MSR.
4. Export multi-die topology to user-space via sysfs
These changes should have 0 impact on cache topology, NUMA topology, Linux scheduler, or system performance.
These topology changes primarily impact parts of the kernel and some applications that care about package MSR scope. Also, some software is licensed per package, and other tools, such as benchmark reporting software sometimes cares about packages.
--- Updates since v4
[PATCH 13/22] hwmon/coretemp: Support multi-die/package
Removed a dead line that should have gone away in the v3 cpuinfo_x86 cleanup suggested by tglx.
[PATCH 19/22] thermal/x86_pkg_temp_thermal: rename internal variables to zones from packages [PATCH 20/22] hwmon/coretemp: rename internal variables to zones from packages [PATCH 21/22] perf/x86/intel/uncore: renames in response to multi-die/pkg support [PATCH 22/22] perf/x86/intel/rapl: rename internal variables in response to multi-die/pkg support
New syntax-only patches to clean up in-consistent variable names resulting from previous patches. Suggested by ingo.
--- Updates since v2:
In response to brice, peterz and Morten Rasmussen, used the word "cpu" rather than "thread" for the new sysfs attributes.
In response to tglx, replaced access to cpuinfo_x86.x86_max_dies, with macro topology_max_die_per_package(). In doing so, deleted this new per-cpu field entirely, as a global is sufficient.
Also, appended 3 patches from Kan Liang, updating the perf code to be multi-die aware. These patches are similar to the preceding power and temperature patches. I believe that with these patches, this series now includes all needed multi-die kernel support.
--- The following changes since commit 085b7755808aa11f78ab9377257e1dad2e6fa4bb:
Linux 5.1-rc6 (2019-04-21 10:45:57 -0700)
are available in the Git repository at:
git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux.git x86
for you to fetch changes up to 9f57786ba08d4d5e913cd21693aadb0ccdba72b2:
perf/x86/intel/rapl: rename internal variables in response to multi-die/pkg support (2019-05-06 17:17:58 -0400)
---------------------------------------------------------------- Kan Liang (3): perf/x86/intel/uncore: Support multi-die/package perf/x86/intel/rapl: Support multi-die/package perf/x86/intel/cstate: Support multi-die/package
Len Brown (14): x86 topology: Fix doc typo topology: Simplify cputopology.txt formatting and wording x86 smpboot: Rename match_die() to match_pkg() x86 topology: Add CPUID.1F multi-die/package support x86 topology: Create topology_max_die_per_package() cpu topology: Export die_id x86 topology: Define topology_die_id() x86 topology: Define topology_logical_die_id() topology: Create package_cpus sysfs attribute topology: Create core_cpus and die_cpus sysfs attributes thermal/x86_pkg_temp_thermal: rename internal variables to zones from packages hwmon/coretemp: rename internal variables to zones from packages perf/x86/intel/uncore: renames in response to multi-die/pkg support perf/x86/intel/rapl: rename internal variables in response to multi-die/pkg support
Zhang Rui (5): powercap/intel_rapl: Simplify rapl_find_package() powercap/intel_rapl: Support multi-die/package thermal/x86_pkg_temp_thermal: Support multi-die/package powercap/intel_rapl: update rapl domain name and debug messages hwmon/coretemp: Support multi-die/package
Documentation/cputopology.txt | 80 +++++++++------ Documentation/x86/topology.txt | 6 +- arch/x86/events/intel/cstate.c | 14 ++- arch/x86/events/intel/rapl.c | 12 +-- arch/x86/events/intel/uncore.c | 80 +++++++-------- arch/x86/events/intel/uncore.h | 4 +- arch/x86/events/intel/uncore_snbep.c | 2 +- arch/x86/include/asm/processor.h | 4 +- arch/x86/include/asm/smp.h | 1 + arch/x86/include/asm/topology.h | 17 ++++ arch/x86/kernel/cpu/common.c | 1 + arch/x86/kernel/cpu/topology.c | 88 +++++++++++++---- arch/x86/kernel/smpboot.c | 75 +++++++++++++- arch/x86/xen/smp_pv.c | 1 + drivers/base/topology.c | 22 +++++ drivers/hwmon/coretemp.c | 36 +++---- drivers/powercap/intel_rapl.c | 75 +++++++------- drivers/thermal/intel/x86_pkg_temp_thermal.c | 142 ++++++++++++++------------- include/linux/topology.h | 6 ++ 19 files changed, 437 insertions(+), 229 deletions(-)
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