lkml.org 
[lkml]   [2022]   [Jun]   [29]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH V2 2/2] perf/x86/intel: Fix PEBS data source encoding for ADL
Date
From: Kan Liang <kan.liang@linux.intel.com>

The PEBS data source encoding for the e-core is different from the
p-core.

Add the pebs_data_source[] in the struct x86_hybrid_pmu to store the
data source encoding for each type of the core.

Add intel_pmu_pebs_data_source_grt() for the e-core.
There is nothing changed for the data source encoding of the p-core,
which still reuse the intel_pmu_pebs_data_source_skl().

Fixes: f83d2f91d259 ("perf/x86/intel: Add Alder Lake Hybrid support")
Reviewed-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Kan Liang <kan.liang@linux.intel.com>
---

The V1 can be found at
https://lore.kernel.org/lkml/20220421132617.82206-2-kan.liang@linux.intel.com/

Changes since V1:
- Rebase on patch 1 accordingly
- Add Reviewed-by from Andi

arch/x86/events/intel/core.c | 2 +-
arch/x86/events/intel/ds.c | 51 +++++++++++++++++++++++++++---------
arch/x86/events/perf_event.h | 6 +++++
3 files changed, 45 insertions(+), 14 deletions(-)

diff --git a/arch/x86/events/intel/core.c b/arch/x86/events/intel/core.c
index b8788ab30159..7638ed3672fa 100644
--- a/arch/x86/events/intel/core.c
+++ b/arch/x86/events/intel/core.c
@@ -6241,7 +6241,7 @@ __init int intel_pmu_init(void)
x86_pmu.flags |= PMU_FL_INSTR_LATENCY;
x86_pmu.flags |= PMU_FL_MEM_LOADS_AUX;
x86_pmu.lbr_pt_coexist = true;
- intel_pmu_pebs_data_source_skl(false);
+ intel_pmu_pebs_data_source_adl();
x86_pmu.pebs_latency_data = adl_latency_data_small;
x86_pmu.num_topdown_events = 8;
x86_pmu.update_topdown_event = adl_update_topdown_event;
diff --git a/arch/x86/events/intel/ds.c b/arch/x86/events/intel/ds.c
index de84385de414..ba60427caa6d 100644
--- a/arch/x86/events/intel/ds.c
+++ b/arch/x86/events/intel/ds.c
@@ -94,15 +94,40 @@ void __init intel_pmu_pebs_data_source_nhm(void)
pebs_data_source[0x07] = OP_LH | P(LVL, L3) | LEVEL(L3) | P(SNOOP, HITM);
}

-void __init intel_pmu_pebs_data_source_skl(bool pmem)
+static void __init __intel_pmu_pebs_data_source_skl(bool pmem, u64 *data_source)
{
u64 pmem_or_l4 = pmem ? LEVEL(PMEM) : LEVEL(L4);

- pebs_data_source[0x08] = OP_LH | pmem_or_l4 | P(SNOOP, HIT);
- pebs_data_source[0x09] = OP_LH | pmem_or_l4 | REM | P(SNOOP, HIT);
- pebs_data_source[0x0b] = OP_LH | LEVEL(RAM) | REM | P(SNOOP, NONE);
- pebs_data_source[0x0c] = OP_LH | LEVEL(ANY_CACHE) | REM | P(SNOOPX, FWD);
- pebs_data_source[0x0d] = OP_LH | LEVEL(ANY_CACHE) | REM | P(SNOOP, HITM);
+ data_source[0x08] = OP_LH | pmem_or_l4 | P(SNOOP, HIT);
+ data_source[0x09] = OP_LH | pmem_or_l4 | REM | P(SNOOP, HIT);
+ data_source[0x0b] = OP_LH | LEVEL(RAM) | REM | P(SNOOP, NONE);
+ data_source[0x0c] = OP_LH | LEVEL(ANY_CACHE) | REM | P(SNOOPX, FWD);
+ data_source[0x0d] = OP_LH | LEVEL(ANY_CACHE) | REM | P(SNOOP, HITM);
+}
+
+void __init intel_pmu_pebs_data_source_skl(bool pmem)
+{
+ __intel_pmu_pebs_data_source_skl(pmem, pebs_data_source);
+}
+
+static void __init intel_pmu_pebs_data_source_grt(u64 *data_source)
+{
+ data_source[0x05] = OP_LH | P(LVL, L3) | LEVEL(L3) | P(SNOOP, HIT);
+ data_source[0x06] = OP_LH | P(LVL, L3) | LEVEL(L3) | P(SNOOP, HITM);
+ data_source[0x08] = OP_LH | P(LVL, L3) | LEVEL(L3) | P(SNOOPX, FWD);
+}
+
+void __init intel_pmu_pebs_data_source_adl(void)
+{
+ u64 *data_source;
+
+ data_source = x86_pmu.hybrid_pmu[X86_HYBRID_PMU_CORE_IDX].pebs_data_source;
+ memcpy(data_source, pebs_data_source, sizeof(pebs_data_source));
+ __intel_pmu_pebs_data_source_skl(false, data_source);
+
+ data_source = x86_pmu.hybrid_pmu[X86_HYBRID_PMU_ATOM_IDX].pebs_data_source;
+ memcpy(data_source, pebs_data_source, sizeof(pebs_data_source));
+ intel_pmu_pebs_data_source_grt(data_source);
}

static u64 precise_store_data(u64 status)
@@ -198,7 +223,7 @@ u64 adl_latency_data_small(struct perf_event *event, u64 status)

dse.val = status;

- val = pebs_data_source[dse.ld_dse];
+ val = hybrid_var(event->pmu, pebs_data_source)[dse.ld_dse];

/*
* For the atom core on ADL,
@@ -214,7 +239,7 @@ u64 adl_latency_data_small(struct perf_event *event, u64 status)
return val;
}

-static u64 load_latency_data(u64 status)
+static u64 load_latency_data(struct perf_event *event, u64 status)
{
union intel_x86_pebs_dse dse;
u64 val;
@@ -224,7 +249,7 @@ static u64 load_latency_data(u64 status)
/*
* use the mapping table for bit 0-3
*/
- val = pebs_data_source[dse.ld_dse];
+ val = hybrid_var(event->pmu, pebs_data_source)[dse.ld_dse];

/*
* Nehalem models do not support TLB, Lock infos
@@ -263,7 +288,7 @@ static u64 load_latency_data(u64 status)
return val;
}

-static u64 store_latency_data(u64 status)
+static u64 store_latency_data(struct perf_event *event, u64 status)
{
union intel_x86_pebs_dse dse;
u64 val;
@@ -273,7 +298,7 @@ static u64 store_latency_data(u64 status)
/*
* use the mapping table for bit 0-3
*/
- val = pebs_data_source[dse.st_lat_dse];
+ val = hybrid_var(event->pmu, pebs_data_source)[dse.st_lat_dse];

pebs_set_tlb_lock(&val, dse.st_lat_stlb_miss, dse.st_lat_locked);

@@ -1459,9 +1484,9 @@ static u64 get_data_src(struct perf_event *event, u64 aux)
bool fst = fl & (PERF_X86_EVENT_PEBS_ST | PERF_X86_EVENT_PEBS_HSW_PREC);

if (fl & PERF_X86_EVENT_PEBS_LDLAT)
- val = load_latency_data(aux);
+ val = load_latency_data(event, aux);
else if (fl & PERF_X86_EVENT_PEBS_STLAT)
- val = store_latency_data(aux);
+ val = store_latency_data(event, aux);
else if (fl & PERF_X86_EVENT_PEBS_LAT_HYBRID)
val = x86_pmu.pebs_latency_data(event, aux);
else if (fst && (fl & PERF_X86_EVENT_PEBS_HSW_PREC))
diff --git a/arch/x86/events/perf_event.h b/arch/x86/events/perf_event.h
index ff6dd189739e..821098aebf78 100644
--- a/arch/x86/events/perf_event.h
+++ b/arch/x86/events/perf_event.h
@@ -643,6 +643,8 @@ enum {
x86_lbr_exclusive_max,
};

+#define PERF_PEBS_DATA_SOURCE_MAX 0x10
+
struct x86_hybrid_pmu {
struct pmu pmu;
const char *name;
@@ -670,6 +672,8 @@ struct x86_hybrid_pmu {
unsigned int late_ack :1,
mid_ack :1,
enabled_ack :1;
+
+ u64 pebs_data_source[PERF_PEBS_DATA_SOURCE_MAX];
};

static __always_inline struct x86_hybrid_pmu *hybrid_pmu(struct pmu *pmu)
@@ -1507,6 +1511,8 @@ void intel_pmu_pebs_data_source_nhm(void);

void intel_pmu_pebs_data_source_skl(bool pmem);

+void intel_pmu_pebs_data_source_adl(void);
+
int intel_pmu_setup_lbr_filter(struct perf_event *event);

void intel_pt_interrupt(void);
--
2.35.1
\
 
 \ /
  Last update: 2022-06-29 17:12    [W:0.041 / U:0.104 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site