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Merge branch 'perf/urgent' into perf/core, to pick up fixes 

With the cherry-picked perf/urgent commit merged separately we can now
merge all the fixes without conflicts.

Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Ingo Molnar 2018-03-24 09:21:47 +01:00
parent 5701dd1e87 c917e0f259
commit 7054e4e0b1
6 changed files with 48 additions and 33 deletions
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2
arch/x86/events/core.c
View File

@ -2118,7 +2118,7 @@ static int x86_pmu_event_init(struct perf_event *event)
}
if (READ_ONCE(x86_pmu.attr_rdpmc) &&
!(event->hw.flags & PERF_X86_EVENT_FREERUNNING))
!(event->hw.flags & PERF_X86_EVENT_LARGE_PEBS))
event->hw.flags |= PERF_X86_EVENT_RDPMC_ALLOWED;
return err;

14
arch/x86/events/intel/core.c
View File

@ -2968,9 +2968,9 @@ static void intel_pebs_aliases_skl(struct perf_event *event)
return intel_pebs_aliases_precdist(event);
}
static unsigned long intel_pmu_free_running_flags(struct perf_event *event)
static unsigned long intel_pmu_large_pebs_flags(struct perf_event *event)
{
unsigned long flags = x86_pmu.free_running_flags;
unsigned long flags = x86_pmu.large_pebs_flags;
if (event->attr.use_clockid)
flags &= ~PERF_SAMPLE_TIME;
@ -2992,8 +2992,8 @@ static int intel_pmu_hw_config(struct perf_event *event)
if (!event->attr.freq) {
event->hw.flags |= PERF_X86_EVENT_AUTO_RELOAD;
if (!(event->attr.sample_type &
~intel_pmu_free_running_flags(event)))
event->hw.flags |= PERF_X86_EVENT_FREERUNNING;
~intel_pmu_large_pebs_flags(event)))
event->hw.flags |= PERF_X86_EVENT_LARGE_PEBS;
}
if (x86_pmu.pebs_aliases)
x86_pmu.pebs_aliases(event);
@ -3210,7 +3210,7 @@ static u64 bdw_limit_period(struct perf_event *event, u64 left)
X86_CONFIG(.event=0xc0, .umask=0x01)) {
if (left < 128)
left = 128;
left &= ~0x3fu;
left &= ~0x3fULL;
}
return left;
}
@ -3476,7 +3476,7 @@ static __initconst const struct x86_pmu core_pmu = {
.event_map = intel_pmu_event_map,
.max_events = ARRAY_SIZE(intel_perfmon_event_map),
.apic = 1,
.free_running_flags = PEBS_FREERUNNING_FLAGS,
.large_pebs_flags = LARGE_PEBS_FLAGS,
/*
* Intel PMCs cannot be accessed sanely above 32-bit width,
@ -3519,7 +3519,7 @@ static __initconst const struct x86_pmu intel_pmu = {
.event_map = intel_pmu_event_map,
.max_events = ARRAY_SIZE(intel_perfmon_event_map),
.apic = 1,
.free_running_flags = PEBS_FREERUNNING_FLAGS,
.large_pebs_flags = LARGE_PEBS_FLAGS,
/*
* Intel PMCs cannot be accessed sanely above 32 bit width,
* so we install an artificial 1<<31 period regardless of

6
arch/x86/events/intel/ds.c
View File

@ -935,7 +935,7 @@ void intel_pmu_pebs_add(struct perf_event *event)
bool needed_cb = pebs_needs_sched_cb(cpuc);
cpuc->n_pebs++;
if (hwc->flags & PERF_X86_EVENT_FREERUNNING)
if (hwc->flags & PERF_X86_EVENT_LARGE_PEBS)
cpuc->n_large_pebs++;
pebs_update_state(needed_cb, cpuc, event->ctx->pmu);
@ -975,7 +975,7 @@ void intel_pmu_pebs_del(struct perf_event *event)
bool needed_cb = pebs_needs_sched_cb(cpuc);
cpuc->n_pebs--;
if (hwc->flags & PERF_X86_EVENT_FREERUNNING)
if (hwc->flags & PERF_X86_EVENT_LARGE_PEBS)
cpuc->n_large_pebs--;
pebs_update_state(needed_cb, cpuc, event->ctx->pmu);
@ -1623,7 +1623,7 @@ void __init intel_ds_init(void)
x86_pmu.pebs_record_size =
sizeof(struct pebs_record_skl);
x86_pmu.drain_pebs = intel_pmu_drain_pebs_nhm;
x86_pmu.free_running_flags |= PERF_SAMPLE_TIME;
x86_pmu.large_pebs_flags |= PERF_SAMPLE_TIME;
break;
default:

32
arch/x86/events/intel/uncore_snbep.c
View File

@ -3343,6 +3343,7 @@ static struct extra_reg skx_uncore_cha_extra_regs[] = {
SNBEP_CBO_EVENT_EXTRA_REG(0x9134, 0xffff, 0x4),
SNBEP_CBO_EVENT_EXTRA_REG(0x35, 0xff, 0x8),
SNBEP_CBO_EVENT_EXTRA_REG(0x36, 0xff, 0x8),
SNBEP_CBO_EVENT_EXTRA_REG(0x38, 0xff, 0x3),
EVENT_EXTRA_END
};
@ -3562,24 +3563,27 @@ static struct intel_uncore_type *skx_msr_uncores[] = {
NULL,
};
/*
* To determine the number of CHAs, it should read bits 27:0 in the CAPID6
* register which located at Device 30, Function 3, Offset 0x9C. PCI ID 0x2083.
*/
#define SKX_CAPID6 0x9c
#define SKX_CHA_BIT_MASK GENMASK(27, 0)
static int skx_count_chabox(void)
{
struct pci_dev *chabox_dev = NULL;
int bus, count = 0;
struct pci_dev *dev = NULL;
u32 val = 0;
while (1) {
chabox_dev = pci_get_device(PCI_VENDOR_ID_INTEL, 0x208d, chabox_dev);
if (!chabox_dev)
break;
if (count == 0)
bus = chabox_dev->bus->number;
if (bus != chabox_dev->bus->number)
break;
count++;
}
dev = pci_get_device(PCI_VENDOR_ID_INTEL, 0x2083, dev);
if (!dev)
goto out;
pci_dev_put(chabox_dev);
return count;
pci_read_config_dword(dev, SKX_CAPID6, &val);
val &= SKX_CHA_BIT_MASK;
out:
pci_dev_put(dev);
return hweight32(val);
}
void skx_uncore_cpu_init(void)

6
arch/x86/events/perf_event.h
View File

@ -69,7 +69,7 @@ struct event_constraint {
#define PERF_X86_EVENT_RDPMC_ALLOWED 0x0100 /* grant rdpmc permission */
#define PERF_X86_EVENT_EXCL_ACCT 0x0200 /* accounted EXCL event */
#define PERF_X86_EVENT_AUTO_RELOAD 0x0400 /* use PEBS auto-reload */
#define PERF_X86_EVENT_FREERUNNING 0x0800 /* use freerunning PEBS */
#define PERF_X86_EVENT_LARGE_PEBS 0x0800 /* use large PEBS */
struct amd_nb {
@ -88,7 +88,7 @@ struct amd_nb {
* REGS_USER can be handled for events limited to ring 3.
*
*/
#define PEBS_FREERUNNING_FLAGS \
#define LARGE_PEBS_FLAGS \
(PERF_SAMPLE_IP | PERF_SAMPLE_TID | PERF_SAMPLE_ADDR | \
PERF_SAMPLE_ID | PERF_SAMPLE_CPU | PERF_SAMPLE_STREAM_ID | \
PERF_SAMPLE_DATA_SRC | PERF_SAMPLE_IDENTIFIER | \
@ -609,7 +609,7 @@ struct x86_pmu {
struct event_constraint *pebs_constraints;
void (*pebs_aliases)(struct perf_event *event);
int max_pebs_events;
unsigned long free_running_flags;
unsigned long large_pebs_flags;
/*
* Intel LBR

21
kernel/events/core.c
View File

@ -724,9 +724,15 @@ static inline void __update_cgrp_time(struct perf_cgroup *cgrp)
static inline void update_cgrp_time_from_cpuctx(struct perf_cpu_context *cpuctx)
{
struct perf_cgroup *cgrp_out = cpuctx->cgrp;
if (cgrp_out)
__update_cgrp_time(cgrp_out);
struct perf_cgroup *cgrp = cpuctx->cgrp;
struct cgroup_subsys_state *css;
if (cgrp) {
for (css = &cgrp->css; css; css = css->parent) {
cgrp = container_of(css, struct perf_cgroup, css);
__update_cgrp_time(cgrp);
}
}
}
static inline void update_cgrp_time_from_event(struct perf_event *event)
@ -754,6 +760,7 @@ perf_cgroup_set_timestamp(struct task_struct *task,
{
struct perf_cgroup *cgrp;
struct perf_cgroup_info *info;
struct cgroup_subsys_state *css;
/*
* ctx->lock held by caller
@ -764,8 +771,12 @@ perf_cgroup_set_timestamp(struct task_struct *task,
return;
cgrp = perf_cgroup_from_task(task, ctx);
info = this_cpu_ptr(cgrp->info);
info->timestamp = ctx->timestamp;
for (css = &cgrp->css; css; css = css->parent) {
cgrp = container_of(css, struct perf_cgroup, css);
info = this_cpu_ptr(cgrp->info);
info->timestamp = ctx->timestamp;
}
}
static DEFINE_PER_CPU(struct list_head, cgrp_cpuctx_list);