From: kan.liang@linux.intel.com
To: tglx@linutronix.de, peterz@infradead.org, acme@redhat.com,
linux-kernel@vger.kernel.org
Cc: ak@linux.intel.com, Kan Liang <kan.liang@linux.intel.com>
Subject: [PATCH 2/2] perf/x86/intel/uncore: Support CoffeeLake 8th CBOX
Date: Fri, 19 Oct 2018 10:04:19 -0700 [thread overview]
Message-ID: <20181019170419.378-2-kan.liang@linux.intel.com> (raw)
In-Reply-To: <20181019170419.378-1-kan.liang@linux.intel.com>
From: Kan Liang <kan.liang@linux.intel.com>
Coffee Lake has 8 core product which has 8 Cboxes. The 8th CBOX is
mapped into different MSR space.
Increase the num_boxes to 8 to handle the new products. It will not
impact the previous platforms, SkyLake, KabyLake and earlier CoffeeLake.
Because the num_boxes will be recalculated in uncore_cpu_init and
doesn't exceed the x86_max_cores.
Introduce a new box flag bit to indicate the 8th CBOX.
Signed-off-by: Kan Liang <kan.liang@linux.intel.com>
---
arch/x86/events/intel/uncore.h | 33 ++++++++++++++++++++++--------
arch/x86/events/intel/uncore_snb.c | 6 +++++-
2 files changed, 30 insertions(+), 9 deletions(-)
diff --git a/arch/x86/events/intel/uncore.h b/arch/x86/events/intel/uncore.h
index e17ab885b1e9..cb46d602a6b8 100644
--- a/arch/x86/events/intel/uncore.h
+++ b/arch/x86/events/intel/uncore.h
@@ -129,8 +129,15 @@ struct intel_uncore_box {
struct intel_uncore_extra_reg shared_regs[0];
};
-#define UNCORE_BOX_FLAG_INITIATED 0
-#define UNCORE_BOX_FLAG_CTL_OFFS8 1 /* event config registers are 8-byte apart */
+/* CFL uncore 8th cbox MSRs */
+#define CFL_UNC_CBO_7_PERFEVTSEL0 0xf70
+#define CFL_UNC_CBO_7_PER_CTR0 0xf76
+
+#define UNCORE_BOX_FLAG_INITIATED 0
+/* event config registers are 8-byte apart */
+#define UNCORE_BOX_FLAG_CTL_OFFS8 1
+/* CFL 8th CBOX has different MSR space */
+#define UNCORE_BOX_FLAG_CFL8_CBOX_MSR_OFFS 2
struct uncore_event_desc {
struct kobj_attribute attr;
@@ -297,17 +304,27 @@ unsigned int uncore_freerunning_counter(struct intel_uncore_box *box,
static inline
unsigned uncore_msr_event_ctl(struct intel_uncore_box *box, int idx)
{
- return box->pmu->type->event_ctl +
- (box->pmu->type->pair_ctr_ctl ? 2 * idx : idx) +
- uncore_msr_box_offset(box);
+ if (test_bit(UNCORE_BOX_FLAG_CFL8_CBOX_MSR_OFFS, &box->flags)) {
+ return CFL_UNC_CBO_7_PERFEVTSEL0 +
+ (box->pmu->type->pair_ctr_ctl ? 2 * idx : idx);
+ } else {
+ return box->pmu->type->event_ctl +
+ (box->pmu->type->pair_ctr_ctl ? 2 * idx : idx) +
+ uncore_msr_box_offset(box);
+ }
}
static inline
unsigned uncore_msr_perf_ctr(struct intel_uncore_box *box, int idx)
{
- return box->pmu->type->perf_ctr +
- (box->pmu->type->pair_ctr_ctl ? 2 * idx : idx) +
- uncore_msr_box_offset(box);
+ if (test_bit(UNCORE_BOX_FLAG_CFL8_CBOX_MSR_OFFS, &box->flags)) {
+ return CFL_UNC_CBO_7_PER_CTR0 +
+ (box->pmu->type->pair_ctr_ctl ? 2 * idx : idx);
+ } else {
+ return box->pmu->type->perf_ctr +
+ (box->pmu->type->pair_ctr_ctl ? 2 * idx : idx) +
+ uncore_msr_box_offset(box);
+ }
}
static inline
diff --git a/arch/x86/events/intel/uncore_snb.c b/arch/x86/events/intel/uncore_snb.c
index bfa25814fe5f..2593b0d7aeee 100644
--- a/arch/x86/events/intel/uncore_snb.c
+++ b/arch/x86/events/intel/uncore_snb.c
@@ -221,6 +221,10 @@ static void skl_uncore_msr_init_box(struct intel_uncore_box *box)
wrmsrl(SKL_UNC_PERF_GLOBAL_CTL,
SNB_UNC_GLOBAL_CTL_EN | SKL_UNC_GLOBAL_CTL_CORE_ALL);
}
+
+ /* The 8th CBOX has different MSR space */
+ if (box->pmu->pmu_idx == 7)
+ __set_bit(UNCORE_BOX_FLAG_CFL8_CBOX_MSR_OFFS, &box->flags);
}
static void skl_uncore_msr_enable_box(struct intel_uncore_box *box)
@@ -247,7 +251,7 @@ static struct intel_uncore_ops skl_uncore_msr_ops = {
static struct intel_uncore_type skl_uncore_cbox = {
.name = "cbox",
.num_counters = 4,
- .num_boxes = 5,
+ .num_boxes = 8,
.perf_ctr_bits = 44,
.fixed_ctr_bits = 48,
.perf_ctr = SNB_UNC_CBO_0_PER_CTR0,
--
2.17.1
next prev parent reply other threads:[~2018-10-19 17:05 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-10-19 17:04 [PATCH 1/2] perf/x86/intel/uncore: Add more IMC PCI IDs for KabyLake and CoffeeLake kan.liang
2018-10-19 17:04 ` kan.liang [this message]
2018-11-12 6:02 ` [tip:perf/urgent] perf/x86/intel/uncore: Support CoffeeLake 8th CBOX tip-bot for Kan Liang
2018-11-08 13:35 ` [PATCH 1/2] perf/x86/intel/uncore: Add more IMC PCI IDs for KabyLake and CoffeeLake Liang, Kan
2018-11-08 14:47 ` Peter Zijlstra
2018-11-12 6:02 ` [tip:perf/urgent] perf/x86/intel/uncore: Add more IMC PCI IDs for KabyLake and CoffeeLake CPUs tip-bot for Kan Liang
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