From: Zhang Rui rui.zhang@intel.com
mainline inclusion from mainline-v5.3-rc1 commit 9ea7612c46586d9eacfd517e73ff76ef294feca0 category: feature bugzilla: https://gitee.com/openeuler/kernel/issues/I47H3V CVE: NA
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commit 9ea7612c46586d9eacfd517e73ff76ef294feca0 upstream.
The RAPL domain "name" attribute contains "Package-N", which is ambiguous on multi-die per-package systems.
Update the name to "package-X-die-Y" on those systems.
No change on systems without multi-die/package.
Update driver debug messages.
Signed-off-by: Zhang Rui rui.zhang@intel.com Signed-off-by: Len Brown len.brown@intel.com Signed-off-by: Thomas Gleixner tglx@linutronix.de Reviewed-by: Ingo Molnar mingo@kernel.org Acked-by: Rafael J. Wysocki rafael.j.wysocki@intel.com Acked-by: Peter Zijlstra (Intel) peterz@infradead.org Cc: linux-pm@vger.kernel.org Link: https://lkml.kernel.org/r/6510b784e16374447965925588ec6e46d5d007d8.155776931... Signed-off-by: Youquan Song youquan.song@intel.com Signed-off-by: Jackie Liu liuyun01@kylinos.cn Signed-off-by: Zheng Zengkai zhengzengkai@huawei.com Reviewed-by: Hanjun Guo guohanjun@huawei.com Reviewed-by: Xie XiuQi xiexiuqi@huawei.com Signed-off-by: Yang Yingliang yangyingliang@huawei.com --- drivers/powercap/intel_rapl.c | 57 ++++++++++++++++++++--------------- 1 file changed, 32 insertions(+), 25 deletions(-)
diff --git a/drivers/powercap/intel_rapl.c b/drivers/powercap/intel_rapl.c index 55f75025d247..0c861567d37b 100644 --- a/drivers/powercap/intel_rapl.c +++ b/drivers/powercap/intel_rapl.c @@ -178,12 +178,15 @@ struct rapl_domain { #define power_zone_to_rapl_domain(_zone) \ container_of(_zone, struct rapl_domain, power_zone)
+/* maximum rapl package domain name: package-%d-die-%d */ +#define PACKAGE_DOMAIN_NAME_LENGTH 30
-/* Each physical package contains multiple domains, these are the common + +/* Each rapl package contains multiple domains, these are the common * data across RAPL domains within a package. */ struct rapl_package { - unsigned int id; /* physical package/socket id */ + unsigned int id; /* logical die id, equals physical 1-die systems */ unsigned int nr_domains; unsigned long domain_map; /* bit map of active domains */ unsigned int power_unit; @@ -198,6 +201,7 @@ struct rapl_package { int lead_cpu; /* one active cpu per package for access */ /* Track active cpus */ struct cpumask cpumask; + char name[PACKAGE_DOMAIN_NAME_LENGTH]; };
struct rapl_defaults { @@ -926,8 +930,8 @@ static int rapl_check_unit_core(struct rapl_package *rp, int cpu) value = (msr_val & TIME_UNIT_MASK) >> TIME_UNIT_OFFSET; rp->time_unit = 1000000 / (1 << value);
- pr_debug("Core CPU package %d energy=%dpJ, time=%dus, power=%duW\n", - rp->id, rp->energy_unit, rp->time_unit, rp->power_unit); + pr_debug("Core CPU %s energy=%dpJ, time=%dus, power=%duW\n", + rp->name, rp->energy_unit, rp->time_unit, rp->power_unit);
return 0; } @@ -951,8 +955,8 @@ static int rapl_check_unit_atom(struct rapl_package *rp, int cpu) value = (msr_val & TIME_UNIT_MASK) >> TIME_UNIT_OFFSET; rp->time_unit = 1000000 / (1 << value);
- pr_debug("Atom package %d energy=%dpJ, time=%dus, power=%duW\n", - rp->id, rp->energy_unit, rp->time_unit, rp->power_unit); + pr_debug("Atom %s energy=%dpJ, time=%dus, power=%duW\n", + rp->name, rp->energy_unit, rp->time_unit, rp->power_unit);
return 0; } @@ -1186,7 +1190,7 @@ static void rapl_update_domain_data(struct rapl_package *rp) u64 val;
for (dmn = 0; dmn < rp->nr_domains; dmn++) { - pr_debug("update package %d domain %s data\n", rp->id, + pr_debug("update %s domain %s data\n", rp->name, rp->domains[dmn].name); /* exclude non-raw primitives */ for (prim = 0; prim < NR_RAW_PRIMITIVES; prim++) { @@ -1211,7 +1215,6 @@ static void rapl_unregister_powercap(void) static int rapl_package_register_powercap(struct rapl_package *rp) { struct rapl_domain *rd; - char dev_name[17]; /* max domain name = 7 + 1 + 8 for int + 1 for null*/ struct powercap_zone *power_zone = NULL; int nr_pl, ret;
@@ -1222,20 +1225,16 @@ static int rapl_package_register_powercap(struct rapl_package *rp) for (rd = rp->domains; rd < rp->domains + rp->nr_domains; rd++) { if (rd->id == RAPL_DOMAIN_PACKAGE) { nr_pl = find_nr_power_limit(rd); - pr_debug("register socket %d package domain %s\n", - rp->id, rd->name); - memset(dev_name, 0, sizeof(dev_name)); - snprintf(dev_name, sizeof(dev_name), "%s-%d", - rd->name, rp->id); + pr_debug("register package domain %s\n", rp->name); power_zone = powercap_register_zone(&rd->power_zone, control_type, - dev_name, NULL, + rp->name, NULL, &zone_ops[rd->id], nr_pl, &constraint_ops); if (IS_ERR(power_zone)) { - pr_debug("failed to register package, %d\n", - rp->id); + pr_debug("failed to register power zone %s\n", + rp->name); return PTR_ERR(power_zone); } /* track parent zone in per package/socket data */ @@ -1261,8 +1260,8 @@ static int rapl_package_register_powercap(struct rapl_package *rp) &constraint_ops);
if (IS_ERR(power_zone)) { - pr_debug("failed to register power_zone, %d:%s:%s\n", - rp->id, rd->name, dev_name); + pr_debug("failed to register power_zone, %s:%s\n", + rp->name, rd->name); ret = PTR_ERR(power_zone); goto err_cleanup; } @@ -1275,7 +1274,7 @@ static int rapl_package_register_powercap(struct rapl_package *rp) * failed after the first domain setup. */ while (--rd >= rp->domains) { - pr_debug("unregister package %d domain %s\n", rp->id, rd->name); + pr_debug("unregister %s domain %s\n", rp->name, rd->name); powercap_unregister_zone(control_type, &rd->power_zone); }
@@ -1385,8 +1384,8 @@ static void rapl_detect_powerlimit(struct rapl_domain *rd) /* check if the domain is locked by BIOS, ignore if MSR doesn't exist */ if (!rapl_read_data_raw(rd, FW_LOCK, false, &val64)) { if (val64) { - pr_info("RAPL package %d domain %s locked by BIOS\n", - rd->rp->id, rd->name); + pr_info("RAPL %s domain %s locked by BIOS\n", + rd->rp->name, rd->name); rd->state |= DOMAIN_STATE_BIOS_LOCKED; } } @@ -1415,10 +1414,10 @@ static int rapl_detect_domains(struct rapl_package *rp, int cpu) } rp->nr_domains = bitmap_weight(&rp->domain_map, RAPL_DOMAIN_MAX); if (!rp->nr_domains) { - pr_debug("no valid rapl domains found in package %d\n", rp->id); + pr_debug("no valid rapl domains found in %s\n", rp->name); return -ENODEV; } - pr_debug("found %d domains on package %d\n", rp->nr_domains, rp->id); + pr_debug("found %d domains on %s\n", rp->nr_domains, rp->name);
rp->domains = kcalloc(rp->nr_domains + 1, sizeof(struct rapl_domain), GFP_KERNEL); @@ -1451,8 +1450,8 @@ static void rapl_remove_package(struct rapl_package *rp) rd_package = rd; continue; } - pr_debug("remove package, undo power limit on %d: %s\n", - rp->id, rd->name); + pr_debug("remove package, undo power limit on %s: %s\n", + rp->name, rd->name); powercap_unregister_zone(control_type, &rd->power_zone); } /* do parent zone last */ @@ -1466,6 +1465,7 @@ static struct rapl_package *rapl_add_package(int cpu) { int id = topology_logical_die_id(cpu); struct rapl_package *rp; + struct cpuinfo_x86 *c = &cpu_data(cpu); int ret;
rp = kzalloc(sizeof(struct rapl_package), GFP_KERNEL); @@ -1476,6 +1476,13 @@ static struct rapl_package *rapl_add_package(int cpu) rp->id = id; rp->lead_cpu = cpu;
+ if (topology_max_die_per_package() > 1) + snprintf(rp->name, PACKAGE_DOMAIN_NAME_LENGTH, + "package-%d-die-%d", c->phys_proc_id, c->cpu_die_id); + else + snprintf(rp->name, PACKAGE_DOMAIN_NAME_LENGTH, "package-%d", + c->phys_proc_id); + /* check if the package contains valid domains */ if (rapl_detect_domains(rp, cpu) || rapl_defaults->check_unit(rp, cpu)) {