Merge tag 'pm-urgent-4.18' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull power management fixes from Rafael Wysocki:
 "These fix the scope of a recent intel_pstate driver optimization used
  incorrectly on some systems due to processor identification ambiguity
  and fix a few issues in the turbostat utility, including three recent
  regressions.

  Specifics:

   - Use ACPI FADT preferred PM Profile to distinguish Skylake desktop
     processors from some server ones with the same model number in
     order to limit the scope of the recent IO-wait boost optimization
     to servers, as intended (Srinivas Pandruvada).

   - Fix several issues in the turbostat utility:
      * Fix the -S option on 1-CPU systems (Len Brown).
      * Fix computations using incorrect processor core counts (Artem
        Bityutskiy).
      * Fix the x2apic debug message (Len Brown).
      * Fix logical node enumeration to allow for non-sequential
        physical nodes (Prarit Bhargava).
      * Fix reported family on modern AMD processors (Calvin Walton).
      * Clarify the RAPL column information in the man page (Len Brown)"

* tag 'pm-urgent-4.18' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  cpufreq: intel_pstate: Limit the scope of HWP dynamic boost platforms
  tools/power turbostat: version 18.07.27
  tools/power turbostat: Read extended processor family from CPUID
  tools/power turbostat: Fix logical node enumeration to allow for non-sequential physical nodes
  tools/power turbostat: fix x2apic debug message output file
  tools/power turbostat: fix bogus summary values
  tools/power turbostat: fix -S on UP systems
  tools/power turbostat: Update turbostat(8) RAPL throttling column description

3 files changed, 74 insertions, 67 deletions

diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c
index 3c3971256130..d4ed0022b0dd 100644
--- a/drivers/cpufreq/intel_pstate.c
+++ b/drivers/cpufreq/intel_pstate.c
@@ -311,12 +311,20 @@ static DEFINE_MUTEX(intel_pstate_limits_lock);
 
 #ifdef CONFIG_ACPI
 
-static bool intel_pstate_get_ppc_enable_status(void)
+static bool intel_pstate_acpi_pm_profile_server(void)
 {
         if (acpi_gbl_FADT.preferred_profile == PM_ENTERPRISE_SERVER ||
             acpi_gbl_FADT.preferred_profile == PM_PERFORMANCE_SERVER)
                 return true;
 
+        return false;
+}
+
+static bool intel_pstate_get_ppc_enable_status(void)
+{
+        if (intel_pstate_acpi_pm_profile_server())
+                return true;
+
         return acpi_ppc;
 }
 
@@ -459,6 +467,11 @@ static inline void intel_pstate_init_acpi_perf_limits(struct cpufreq_policy *pol
 static inline void intel_pstate_exit_perf_limits(struct cpufreq_policy *policy)
 {
 }
+
+static inline bool intel_pstate_acpi_pm_profile_server(void)
+{
+        return false;
+}
 #endif
 
 static inline void update_turbo_state(void)
@@ -1841,7 +1854,7 @@ static int intel_pstate_init_cpu(unsigned int cpunum)
                 intel_pstate_hwp_enable(cpu);
 
                 id = x86_match_cpu(intel_pstate_hwp_boost_ids);
-                if (id)
+                if (id && intel_pstate_acpi_pm_profile_server())
                         hwp_boost = true;
         }
 
diff --git a/tools/power/x86/turbostat/turbostat.8 b/tools/power/x86/turbostat/turbostat.8
index d39e4ff7d0bf..a6db83a88e85 100644
--- a/tools/power/x86/turbostat/turbostat.8
+++ b/tools/power/x86/turbostat/turbostat.8
@@ -106,7 +106,7 @@ The system configuration dump (if --quiet is not used) is followed by statistics
 \fBC1%, C2%, C3%\fP The residency percentage that Linux requested C1, C2, C3....  The system summary is the average of all CPUs in the system.  Note that these are software, reflecting what was requested.  The hardware counters reflect what was actually achieved.
 \fBCPU%c1, CPU%c3, CPU%c6, CPU%c7\fP show the percentage residency in hardware core idle states.  These numbers are from hardware residency counters.
 \fBCoreTmp\fP Degrees Celsius reported by the per-core Digital Thermal Sensor.
-\fBPkgTtmp\fP Degrees Celsius reported by the per-package Package Thermal Monitor.
+\fBPkgTmp\fP Degrees Celsius reported by the per-package Package Thermal Monitor.
 \fBGFX%rc6\fP The percentage of time the GPU is in the "render C6" state, rc6, during the measurement interval. From /sys/class/drm/card0/power/rc6_residency_ms.
 \fBGFXMHz\fP Instantaneous snapshot of what sysfs presents at the end of the measurement interval. From /sys/class/graphics/fb0/device/drm/card0/gt_cur_freq_mhz.
 \fBPkg%pc2, Pkg%pc3, Pkg%pc6, Pkg%pc7\fP percentage residency in hardware package idle states.  These numbers are from hardware residency counters.
@@ -114,7 +114,7 @@ The system configuration dump (if --quiet is not used) is followed by statistics
 \fBCorWatt\fP Watts consumed by the core part of the package.
 \fBGFXWatt\fP Watts consumed by the Graphics part of the package -- available only on client processors.
 \fBRAMWatt\fP Watts consumed by the DRAM DIMMS -- available only on server processors.
-\fBPKG_%\fP percent of the interval that RAPL throttling was active on the Package.
+\fBPKG_%\fP percent of the interval that RAPL throttling was active on the Package.  Note that the system summary is the sum of the package throttling time, and thus may be higher than 100% on a multi-package system.  Note that the meaning of this field is model specific.  For example, some hardware increments this counter when RAPL responds to thermal limits, but does not increment this counter when RAPL responds to power limits.  Comparing PkgWatt and PkgTmp to system limits is necessary.
 \fBRAM_%\fP percent of the interval that RAPL throttling was active on DRAM.
 .fi
 .SH TOO MUCH INFORMATION EXAMPLE
diff --git a/tools/power/x86/turbostat/turbostat.c b/tools/power/x86/turbostat/turbostat.c
index 4d14bbbf9b63..980bd9d20646 100644
--- a/tools/power/x86/turbostat/turbostat.c
+++ b/tools/power/x86/turbostat/turbostat.c
@@ -1163,9 +1163,7 @@ void format_all_counters(struct thread_data *t, struct core_data *c, struct pkg_
         if (!printed || !summary_only)
                 print_header("\t");
 
-        if (topo.num_cpus > 1)
-                format_counters(&average.threads, &average.cores,
-                        &average.packages);
+        format_counters(&average.threads, &average.cores, &average.packages);
 
         printed = 1;
 
@@ -1692,7 +1690,7 @@ void get_apic_id(struct thread_data *t)
         t->x2apic_id = edx;
 
         if (debug && (t->apic_id != t->x2apic_id))
-                fprintf(stderr, "cpu%d: apic 0x%x x2apic 0x%x\n", t->cpu_id, t->apic_id, t->x2apic_id);
+                fprintf(outf, "cpu%d: apic 0x%x x2apic 0x%x\n", t->cpu_id, t->apic_id, t->x2apic_id);
 }
 
 /*
@@ -2473,55 +2471,43 @@ int get_core_id(int cpu)
 
 void set_node_data(void)
 {
-        char path[80];
-        FILE *filep;
-        int pkg, node, cpu;
-
-        struct pkg_node_info {
-                int count;
-                int min;
-        } *pni;
-
-        pni = calloc(topo.num_packages, sizeof(struct pkg_node_info));
-        if (!pni)
-                err(1, "calloc pkg_node_count");
-
-        for (pkg = 0; pkg < topo.num_packages; pkg++)
-                pni[pkg].min = topo.num_cpus;
-
-        for (node = 0; node <= topo.max_node_num; node++) {
-                /* find the "first" cpu in the node */
-                sprintf(path, "/sys/bus/node/devices/node%d/cpulist", node);
-                filep = fopen(path, "r");
-                if (!filep)
-                        continue;
-                fscanf(filep, "%d", &cpu);
-                fclose(filep);
-
-                pkg = cpus[cpu].physical_package_id;
-                pni[pkg].count++;
-
-                if (node < pni[pkg].min)
-                        pni[pkg].min = node;
-        }
-
-        for (pkg = 0; pkg < topo.num_packages; pkg++)
-                if (pni[pkg].count > topo.nodes_per_pkg)
-                        topo.nodes_per_pkg = pni[0].count;
-
-        /* Fake 1 node per pkg for machines that don't
-         * expose nodes and thus avoid -nan results
-         */
-        if (topo.nodes_per_pkg == 0)
-                topo.nodes_per_pkg = 1;
-
-        for (cpu = 0; cpu < topo.num_cpus; cpu++) {
-                pkg = cpus[cpu].physical_package_id;
-                node = cpus[cpu].physical_node_id;
-                cpus[cpu].logical_node_id = node - pni[pkg].min;
+        int pkg, node, lnode, cpu, cpux;
+        int cpu_count;
+
+        /* initialize logical_node_id */
+        for (cpu = 0; cpu <= topo.max_cpu_num; ++cpu)
+                cpus[cpu].logical_node_id = -1;
+
+        cpu_count = 0;
+        for (pkg = 0; pkg < topo.num_packages; pkg++) {
+                lnode = 0;
+                for (cpu = 0; cpu <= topo.max_cpu_num; ++cpu) {
+                        if (cpus[cpu].physical_package_id != pkg)
+                                continue;
+                        /* find a cpu with an unset logical_node_id */
+                        if (cpus[cpu].logical_node_id != -1)
+                                continue;
+                        cpus[cpu].logical_node_id = lnode;
+                        node = cpus[cpu].physical_node_id;
+                        cpu_count++;
+                        /*
+                         * find all matching cpus on this pkg and set
+                         * the logical_node_id
+                         */
+                        for (cpux = cpu; cpux <= topo.max_cpu_num; cpux++) {
+                                if ((cpus[cpux].physical_package_id == pkg) &&
+                                   (cpus[cpux].physical_node_id == node)) {
+                                        cpus[cpux].logical_node_id = lnode;
+                                        cpu_count++;
+                                }
+                        }
+                        lnode++;
+                        if (lnode > topo.nodes_per_pkg)
+                                topo.nodes_per_pkg = lnode;
+                }
+                if (cpu_count >= topo.max_cpu_num)
+                        break;
         }
-        free(pni);
-
 }
 
 int get_physical_node_id(struct cpu_topology *thiscpu)
@@ -4471,7 +4457,9 @@ void process_cpuid()
         family = (fms >> 8) & 0xf;
         model = (fms >> 4) & 0xf;
         stepping = fms & 0xf;
-        if (family == 6 || family == 0xf)
+        if (family == 0xf)
+                family += (fms >> 20) & 0xff;
+        if (family >= 6)
                 model += ((fms >> 16) & 0xf) << 4;
 
         if (!quiet) {
@@ -4840,16 +4828,8 @@ void topology_probe()
                 siblings = get_thread_siblings(&cpus[i]);
                 if (siblings > max_siblings)
                         max_siblings = siblings;
-                if (cpus[i].thread_id != -1)
+                if (cpus[i].thread_id == 0)
                         topo.num_cores++;
-
-                if (debug > 1)
-                        fprintf(outf,
-                                "cpu %d pkg %d node %d core %d thread %d\n",
-                                i, cpus[i].physical_package_id,
-                                cpus[i].physical_node_id,
-                                cpus[i].physical_core_id,
-                                cpus[i].thread_id);
         }
 
         topo.cores_per_node = max_core_id + 1;
@@ -4875,6 +4855,20 @@ void topology_probe()
         topo.threads_per_core = max_siblings;
         if (debug > 1)
                 fprintf(outf, "max_siblings %d\n", max_siblings);
+
+        if (debug < 1)
+                return;
+
+        for (i = 0; i <= topo.max_cpu_num; ++i) {
+                fprintf(outf,
+                        "cpu %d pkg %d node %d lnode %d core %d thread %d\n",
+                        i, cpus[i].physical_package_id,
+                        cpus[i].physical_node_id,
+                        cpus[i].logical_node_id,
+                        cpus[i].physical_core_id,
+                        cpus[i].thread_id);
+        }
+
 }
 
 void
@@ -5102,7 +5096,7 @@ int get_and_dump_counters(void)
 }
 
 void print_version() {
-        fprintf(outf, "turbostat version 18.06.20"
+        fprintf(outf, "turbostat version 18.07.27"
                 " - Len Brown <lenb@kernel.org>\n");
 }