Linus,
please pull the latest perf/core branch from:
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git
perf-core-2020-12-14
up to: c2208046bba6: perf/x86/intel: Add Tremont Topdown support
Perf updates:
Core:
- Better handling of page table leaves on archictectures which have
architectures have non-pagetable aligned huge/large pages. For such
architectures a leaf can actually be part of a larger entry.
- Prevent a deadlock vs. exec_update_mutex
Architectures:
- The related updates for page size calculation of leaf entries
- The usual churn to support new CPUs
- Small fixes and improvements all over the place
Thanks,
tglx
------------------>
Gustavo A. R. Silva (3):
kprobes/x86: Fix fall-through warnings for Clang
perf/x86: Fix fall-through warnings for Clang
uprobes/x86: Fix fall-through warnings for Clang
Kan Liang (11):
perf/core: Add PERF_SAMPLE_DATA_PAGE_SIZE
perf/x86/intel: Support PERF_SAMPLE_DATA_PAGE_SIZE
powerpc/perf: Support PERF_SAMPLE_DATA_PAGE_SIZE
perf/x86/intel: Add Rocket Lake CPU support
perf/x86/cstate: Add Rocket Lake CPU support
perf/x86/msr: Add Rocket Lake CPU support
perf/x86/intel/uncore: Add Rocket Lake support
perf/x86/intel: Add event constraint for CYCLE_ACTIVITY.STALLS_MEM_ANY
perf/x86/intel: Fix rtm_abort_event encoding on Ice Lake
perf/x86/intel/lbr: Fix the return type of get_lbr_cycles()
perf/x86/intel: Add Tremont Topdown support
Masami Hiramatsu (1):
x86/kprobes: Restore BTF if the single-stepping is cancelled
Peter Zijlstra (7):
perf,mm: Handle non-page-table-aligned hugetlbfs
mm/gup: Provide gup_get_pte() more generic
mm: Introduce pXX_leaf_size()
perf/core: Fix arch_perf_get_page_size()
arm64/mm: Implement pXX_leaf_size() support
powerpc/8xx: Implement pXX_leaf_size() support
sparc64/mm: Implement pXX_leaf_size() support
Stephane Eranian (1):
perf/core: Add support for PERF_SAMPLE_CODE_PAGE_SIZE
pet...@infradead.org (1):
perf: Break deadlock involving exec_update_mutex
arch/arm64/include/asm/pgtable.h | 4 +
arch/powerpc/include/asm/nohash/32/pte-8xx.h | 23 ++++
arch/powerpc/perf/core-book3s.c | 6 +-
arch/sparc/include/asm/pgtable_64.h | 13 +++
arch/sparc/mm/hugetlbpage.c | 19 +++-
arch/x86/events/core.c | 2 +-
arch/x86/events/intel/core.c | 20 +++-
arch/x86/events/intel/cstate.c | 19 ++--
arch/x86/events/intel/ds.c | 11 +-
arch/x86/events/intel/lbr.c | 2 +-
arch/x86/events/intel/uncore.c | 6 +
arch/x86/events/intel/uncore_snb.c | 20 +++-
arch/x86/events/msr.c | 1 +
arch/x86/events/perf_event.h | 2 +-
arch/x86/kernel/kprobes/core.c | 6 +
arch/x86/kernel/uprobes.c | 2 +
include/linux/perf_event.h | 6 +
include/linux/pgtable.h | 71 ++++++++++++
include/uapi/linux/perf_event.h | 6 +-
kernel/events/core.c | 160 +++++++++++++++++++++++----
mm/gup.c | 58 +---------
21 files changed, 349 insertions(+), 108 deletions(-)
diff --git a/arch/arm64/include/asm/pgtable.h b/arch/arm64/include/asm/pgtable.h
index 4ff12a7adcfd..c3b92a4503cf 100644
--- a/arch/arm64/include/asm/pgtable.h
+++ b/arch/arm64/include/asm/pgtable.h
@@ -407,6 +407,7 @@ static inline int pmd_trans_huge(pmd_t pmd)
#define pmd_dirty(pmd) pte_dirty(pmd_pte(pmd))
#define pmd_young(pmd) pte_young(pmd_pte(pmd))
#define pmd_valid(pmd) pte_valid(pmd_pte(pmd))
+#define pmd_cont(pmd) pte_cont(pmd_pte(pmd))
#define pmd_wrprotect(pmd) pte_pmd(pte_wrprotect(pmd_pte(pmd)))
#define pmd_mkold(pmd) pte_pmd(pte_mkold(pmd_pte(pmd)))
#define pmd_mkwrite(pmd) pte_pmd(pte_mkwrite(pmd_pte(pmd)))
@@ -503,6 +504,9 @@ extern pgprot_t phys_mem_access_prot(struct file *file,
unsigned long pfn,
PMD_TYPE_SECT)
#define pmd_leaf(pmd) pmd_sect(pmd)
+#define pmd_leaf_size(pmd) (pmd_cont(pmd) ? CONT_PMD_SIZE : PMD_SIZE)
+#define pte_leaf_size(pte) (pte_cont(pte) ? CONT_PTE_SIZE : PAGE_SIZE)
+
#if defined(CONFIG_ARM64_64K_PAGES) || CONFIG_PGTABLE_LEVELS < 3
static inline bool pud_sect(pud_t pud) { return false; }
static inline bool pud_table(pud_t pud) { return true; }
diff --git a/arch/powerpc/include/asm/nohash/32/pte-8xx.h
b/arch/powerpc/include/asm/nohash/32/pte-8xx.h
index 1581204467e1..fcc48d590d88 100644
--- a/arch/powerpc/include/asm/nohash/32/pte-8xx.h
+++ b/arch/powerpc/include/asm/nohash/32/pte-8xx.h
@@ -135,6 +135,29 @@ static inline pte_t pte_mkhuge(pte_t pte)
}
#define pte_mkhuge pte_mkhuge
+
+static inline unsigned long pgd_leaf_size(pgd_t pgd)
+{
+ if (pgd_val(pgd) & _PMD_PAGE_8M)
+ return SZ_8M;
+ return SZ_4M;
+}
+
+#define pgd_leaf_size pgd_leaf_size
+
+static inline unsigned long pte_leaf_size(pte_t pte)
+{
+ pte_basic_t val = pte_val(pte);
+
+ if (val & _PAGE_HUGE)
+ return SZ_512K;
+ if (val & _PAGE_SPS)
+ return SZ_16K;
+ return SZ_4K;
+}
+
+#define pte_leaf_size pte_leaf_size
+
#endif
#endif /* __KERNEL__ */
diff --git a/arch/powerpc/perf/core-book3s.c b/arch/powerpc/perf/core-book3s.c
index 08643cba1494..6586f7e71cfb 100644
--- a/arch/powerpc/perf/core-book3s.c
+++ b/arch/powerpc/perf/core-book3s.c
@@ -2074,6 +2074,9 @@ static struct pmu power_pmu = {
.sched_task = power_pmu_sched_task,
};
+#define PERF_SAMPLE_ADDR_TYPE (PERF_SAMPLE_ADDR | \
+ PERF_SAMPLE_PHYS_ADDR | \
+ PERF_SAMPLE_DATA_PAGE_SIZE)
/*
* A counter has overflowed; update its count and record
* things if requested. Note that interrupts are hard-disabled
@@ -2129,8 +2132,7 @@ static void record_and_restart(struct perf_event *event,
unsigned long val,
perf_sample_data_init(&data, ~0ULL, event->hw.last_period);
- if (event->attr.sample_type &
- (PERF_SAMPLE_ADDR | PERF_SAMPLE_PHYS_ADDR))
+ if (event->attr.sample_type & PERF_SAMPLE_ADDR_TYPE)
perf_get_data_addr(event, regs, &data.addr);
if (event->attr.sample_type & PERF_SAMPLE_BRANCH_STACK) {
diff --git a/arch/sparc/include/asm/pgtable_64.h
b/arch/sparc/include/asm/pgtable_64.h
index 7ef6affa105e..550d3904de65 100644
--- a/arch/sparc/include/asm/pgtable_64.h
+++ b/arch/sparc/include/asm/pgtable_64.h
@@ -1121,6 +1121,19 @@ extern unsigned long cmdline_memory_size;
asmlinkage void do_sparc64_fault(struct pt_regs *regs);
+#ifdef CONFIG_HUGETLB_PAGE
+
+#define pud_leaf_size pud_leaf_size
+extern unsigned long pud_leaf_size(pud_t pud);
+
+#define pmd_leaf_size pmd_leaf_size
+extern unsigned long pmd_leaf_size(pmd_t pmd);
+
+#define pte_leaf_size pte_leaf_size
+extern unsigned long pte_leaf_size(pte_t pte);
+
+#endif /* CONFIG_HUGETLB_PAGE */
+
#endif /* !(__ASSEMBLY__) */
#endif /* !(_SPARC64_PGTABLE_H) */
diff --git a/arch/sparc/mm/hugetlbpage.c b/arch/sparc/mm/hugetlbpage.c
index ec423b5f17dd..ad4b42f04988 100644
--- a/arch/sparc/mm/hugetlbpage.c
+++ b/arch/sparc/mm/hugetlbpage.c
@@ -247,14 +247,17 @@ static unsigned int sun4u_huge_tte_to_shift(pte_t entry)
return shift;
}
-static unsigned int huge_tte_to_shift(pte_t entry)
+static unsigned long tte_to_shift(pte_t entry)
{
- unsigned long shift;
-
if (tlb_type == hypervisor)
- shift = sun4v_huge_tte_to_shift(entry);
- else
- shift = sun4u_huge_tte_to_shift(entry);
+ return sun4v_huge_tte_to_shift(entry);
+
+ return sun4u_huge_tte_to_shift(entry);
+}
+
+static unsigned int huge_tte_to_shift(pte_t entry)
+{
+ unsigned long shift = tte_to_shift(entry);
if (shift == PAGE_SHIFT)
WARN_ONCE(1, "tto_to_shift: invalid hugepage tte=0x%lx\n",
@@ -272,6 +275,10 @@ static unsigned long huge_tte_to_size(pte_t pte)
return size;
}
+unsigned long pud_leaf_size(pud_t pud) { return 1UL << tte_to_shift(*(pte_t
*)&pud); }
+unsigned long pmd_leaf_size(pmd_t pmd) { return 1UL << tte_to_shift(*(pte_t
*)&pmd); }
+unsigned long pte_leaf_size(pte_t pte) { return 1UL << tte_to_shift(pte); }
+
pte_t *huge_pte_alloc(struct mm_struct *mm,
unsigned long addr, unsigned long sz)
{
diff --git a/arch/x86/events/core.c b/arch/x86/events/core.c
index a88c94d65693..550c5e7002b9 100644
--- a/arch/x86/events/core.c
+++ b/arch/x86/events/core.c
@@ -1174,7 +1174,7 @@ static inline void x86_assign_hw_event(struct perf_event
*event,
case INTEL_PMC_IDX_METRIC_BASE ... INTEL_PMC_IDX_METRIC_END:
/* All the metric events are mapped onto the fixed counter 3. */
idx = INTEL_PMC_IDX_FIXED_SLOTS;
- /* fall through */
+ fallthrough;
case INTEL_PMC_IDX_FIXED ... INTEL_PMC_IDX_FIXED_BTS-1:
hwc->config_base = MSR_ARCH_PERFMON_FIXED_CTR_CTRL;
hwc->event_base = MSR_ARCH_PERFMON_FIXED_CTR0 +
diff --git a/arch/x86/events/intel/core.c b/arch/x86/events/intel/core.c
index af457f8cb29d..d4569bfa83e3 100644
--- a/arch/x86/events/intel/core.c
+++ b/arch/x86/events/intel/core.c
@@ -257,7 +257,8 @@ static struct event_constraint
intel_icl_event_constraints[] = {
INTEL_EVENT_CONSTRAINT_RANGE(0x48, 0x54, 0xf),
INTEL_EVENT_CONSTRAINT_RANGE(0x60, 0x8b, 0xf),
INTEL_UEVENT_CONSTRAINT(0x04a3, 0xff), /* CYCLE_ACTIVITY.STALLS_TOTAL
*/
- INTEL_UEVENT_CONSTRAINT(0x10a3, 0xff), /*
CYCLE_ACTIVITY.STALLS_MEM_ANY */
+ INTEL_UEVENT_CONSTRAINT(0x10a3, 0xff), /*
CYCLE_ACTIVITY.CYCLES_MEM_ANY */
+ INTEL_UEVENT_CONSTRAINT(0x14a3, 0xff), /*
CYCLE_ACTIVITY.STALLS_MEM_ANY */
INTEL_EVENT_CONSTRAINT(0xa3, 0xf), /* CYCLE_ACTIVITY.* */
INTEL_EVENT_CONSTRAINT_RANGE(0xa8, 0xb0, 0xf),
INTEL_EVENT_CONSTRAINT_RANGE(0xb7, 0xbd, 0xf),
@@ -1900,6 +1901,19 @@ static __initconst const u64 tnt_hw_cache_extra_regs
},
};
+EVENT_ATTR_STR(topdown-fe-bound, td_fe_bound_tnt,
"event=0x71,umask=0x0");
+EVENT_ATTR_STR(topdown-retiring, td_retiring_tnt,
"event=0xc2,umask=0x0");
+EVENT_ATTR_STR(topdown-bad-spec, td_bad_spec_tnt,
"event=0x73,umask=0x6");
+EVENT_ATTR_STR(topdown-be-bound, td_be_bound_tnt,
"event=0x74,umask=0x0");
+
+static struct attribute *tnt_events_attrs[] = {
+ EVENT_PTR(td_fe_bound_tnt),
+ EVENT_PTR(td_retiring_tnt),
+ EVENT_PTR(td_bad_spec_tnt),
+ EVENT_PTR(td_be_bound_tnt),
+ NULL,
+};
+
static struct extra_reg intel_tnt_extra_regs[] __read_mostly = {
/* must define OFFCORE_RSP_X first, see intel_fixup_er() */
INTEL_UEVENT_EXTRA_REG(0x01b7, MSR_OFFCORE_RSP_0,
0x800ff0ffffff9fffull, RSP_0),
@@ -5173,6 +5187,7 @@ __init int intel_pmu_init(void)
x86_pmu.lbr_pt_coexist = true;
x86_pmu.flags |= PMU_FL_HAS_RSP_1;
x86_pmu.get_event_constraints = tnt_get_event_constraints;
+ td_attr = tnt_events_attrs;
extra_attr = slm_format_attr;
pr_cont("Tremont events, ");
name = "Tremont";
@@ -5442,6 +5457,7 @@ __init int intel_pmu_init(void)
case INTEL_FAM6_ICELAKE:
case INTEL_FAM6_TIGERLAKE_L:
case INTEL_FAM6_TIGERLAKE:
+ case INTEL_FAM6_ROCKETLAKE:
x86_pmu.late_ack = true;
memcpy(hw_cache_event_ids, skl_hw_cache_event_ids,
sizeof(hw_cache_event_ids));
memcpy(hw_cache_extra_regs, skl_hw_cache_extra_regs,
sizeof(hw_cache_extra_regs));
@@ -5464,7 +5480,7 @@ __init int intel_pmu_init(void)
mem_attr = icl_events_attrs;
td_attr = icl_td_events_attrs;
tsx_attr = icl_tsx_events_attrs;
- x86_pmu.rtm_abort_event = X86_CONFIG(.event=0xca, .umask=0x02);
+ x86_pmu.rtm_abort_event = X86_CONFIG(.event=0xc9, .umask=0x04);
x86_pmu.lbr_pt_coexist = true;
intel_pmu_pebs_data_source_skl(pmem);
x86_pmu.update_topdown_event = icl_update_topdown_event;
diff --git a/arch/x86/events/intel/cstate.c b/arch/x86/events/intel/cstate.c
index 4eb7ee5fed72..407eee5f6f95 100644
--- a/arch/x86/events/intel/cstate.c
+++ b/arch/x86/events/intel/cstate.c
@@ -51,46 +51,46 @@
* perf code: 0x02
* Available model: SLM,AMT,NHM,WSM,SNB,IVB,HSW,BDW,
* SKL,KNL,GLM,CNL,KBL,CML,ICL,TGL,
- * TNT
+ * TNT,RKL
* Scope: Core
* MSR_CORE_C7_RESIDENCY: CORE C7 Residency Counter
* perf code: 0x03
* Available model: SNB,IVB,HSW,BDW,SKL,CNL,KBL,CML,
- * ICL,TGL
+ * ICL,TGL,RKL
* Scope: Core
* MSR_PKG_C2_RESIDENCY: Package C2 Residency Counter.
* perf code: 0x00
* Available model: SNB,IVB,HSW,BDW,SKL,KNL,GLM,CNL,
- * KBL,CML,ICL,TGL,TNT
+ * KBL,CML,ICL,TGL,TNT,RKL
* Scope: Package (physical package)
* MSR_PKG_C3_RESIDENCY: Package C3 Residency Counter.
* perf code: 0x01
* Available model: NHM,WSM,SNB,IVB,HSW,BDW,SKL,KNL,
- * GLM,CNL,KBL,CML,ICL,TGL,TNT
+ * GLM,CNL,KBL,CML,ICL,TGL,TNT,RKL
* Scope: Package (physical package)
* MSR_PKG_C6_RESIDENCY: Package C6 Residency Counter.
* perf code: 0x02
* Available model: SLM,AMT,NHM,WSM,SNB,IVB,HSW,BDW,
* SKL,KNL,GLM,CNL,KBL,CML,ICL,TGL,
- * TNT
+ * TNT,RKL
* Scope: Package (physical package)
* MSR_PKG_C7_RESIDENCY: Package C7 Residency Counter.
* perf code: 0x03
* Available model: NHM,WSM,SNB,IVB,HSW,BDW,SKL,CNL,
- * KBL,CML,ICL,TGL
+ * KBL,CML,ICL,TGL,RKL
* Scope: Package (physical package)
* MSR_PKG_C8_RESIDENCY: Package C8 Residency Counter.
* perf code: 0x04
- * Available model: HSW ULT,KBL,CNL,CML,ICL,TGL
+ * Available model: HSW ULT,KBL,CNL,CML,ICL,TGL,RKL
* Scope: Package (physical package)
* MSR_PKG_C9_RESIDENCY: Package C9 Residency Counter.
* perf code: 0x05
- * Available model: HSW ULT,KBL,CNL,CML,ICL,TGL
+ * Available model: HSW ULT,KBL,CNL,CML,ICL,TGL,RKL
* Scope: Package (physical package)
* MSR_PKG_C10_RESIDENCY: Package C10 Residency Counter.
* perf code: 0x06
* Available model: HSW ULT,KBL,GLM,CNL,CML,ICL,TGL,
- * TNT
+ * TNT,RKL
* Scope: Package (physical package)
*
*/
@@ -649,6 +649,7 @@ static const struct x86_cpu_id intel_cstates_match[]
__initconst = {
X86_MATCH_INTEL_FAM6_MODEL(ICELAKE, &icl_cstates),
X86_MATCH_INTEL_FAM6_MODEL(TIGERLAKE_L, &icl_cstates),
X86_MATCH_INTEL_FAM6_MODEL(TIGERLAKE, &icl_cstates),
+ X86_MATCH_INTEL_FAM6_MODEL(ROCKETLAKE, &icl_cstates),
{ },
};
MODULE_DEVICE_TABLE(x86cpu, intel_cstates_match);
diff --git a/arch/x86/events/intel/ds.c b/arch/x86/events/intel/ds.c
index b47cc4226934..afbf734e2ee3 100644
--- a/arch/x86/events/intel/ds.c
+++ b/arch/x86/events/intel/ds.c
@@ -961,7 +961,8 @@ static void adaptive_pebs_record_size_update(void)
#define PERF_PEBS_MEMINFO_TYPE (PERF_SAMPLE_ADDR | PERF_SAMPLE_DATA_SRC | \
PERF_SAMPLE_PHYS_ADDR | PERF_SAMPLE_WEIGHT | \
- PERF_SAMPLE_TRANSACTION)
+ PERF_SAMPLE_TRANSACTION | \
+ PERF_SAMPLE_DATA_PAGE_SIZE)
static u64 pebs_update_adaptive_cfg(struct perf_event *event)
{
@@ -1337,6 +1338,10 @@ static u64 get_data_src(struct perf_event *event, u64
aux)
return val;
}
+#define PERF_SAMPLE_ADDR_TYPE (PERF_SAMPLE_ADDR | \
+ PERF_SAMPLE_PHYS_ADDR | \
+ PERF_SAMPLE_DATA_PAGE_SIZE)
+
static void setup_pebs_fixed_sample_data(struct perf_event *event,
struct pt_regs *iregs, void *__pebs,
struct perf_sample_data *data,
@@ -1451,7 +1456,7 @@ static void setup_pebs_fixed_sample_data(struct
perf_event *event,
}
- if ((sample_type & (PERF_SAMPLE_ADDR | PERF_SAMPLE_PHYS_ADDR)) &&
+ if ((sample_type & PERF_SAMPLE_ADDR_TYPE) &&
x86_pmu.intel_cap.pebs_format >= 1)
data->addr = pebs->dla;
@@ -1579,7 +1584,7 @@ static void setup_pebs_adaptive_sample_data(struct
perf_event *event,
if (sample_type & PERF_SAMPLE_DATA_SRC)
data->data_src.val = get_data_src(event, meminfo->aux);
- if (sample_type & (PERF_SAMPLE_ADDR | PERF_SAMPLE_PHYS_ADDR))
+ if (sample_type & PERF_SAMPLE_ADDR_TYPE)
data->addr = meminfo->address;
if (sample_type & PERF_SAMPLE_TRANSACTION)
diff --git a/arch/x86/events/intel/lbr.c b/arch/x86/events/intel/lbr.c
index 8961653c5dd2..e2b0efcba101 100644
--- a/arch/x86/events/intel/lbr.c
+++ b/arch/x86/events/intel/lbr.c
@@ -919,7 +919,7 @@ static __always_inline bool get_lbr_predicted(u64 info)
return !(info & LBR_INFO_MISPRED);
}
-static __always_inline bool get_lbr_cycles(u64 info)
+static __always_inline u16 get_lbr_cycles(u64 info)
{
if (static_cpu_has(X86_FEATURE_ARCH_LBR) &&
!(x86_pmu.lbr_timed_lbr && info & LBR_INFO_CYC_CNT_VALID))
diff --git a/arch/x86/events/intel/uncore.c b/arch/x86/events/intel/uncore.c
index 80d52cbe2fde..357258f82dc8 100644
--- a/arch/x86/events/intel/uncore.c
+++ b/arch/x86/events/intel/uncore.c
@@ -1636,6 +1636,11 @@ static const struct intel_uncore_init_fun
tgl_l_uncore_init __initconst = {
.mmio_init = tgl_l_uncore_mmio_init,
};
+static const struct intel_uncore_init_fun rkl_uncore_init __initconst = {
+ .cpu_init = tgl_uncore_cpu_init,
+ .pci_init = skl_uncore_pci_init,
+};
+
static const struct intel_uncore_init_fun icx_uncore_init __initconst = {
.cpu_init = icx_uncore_cpu_init,
.pci_init = icx_uncore_pci_init,
@@ -1683,6 +1688,7 @@ static const struct x86_cpu_id intel_uncore_match[]
__initconst = {
X86_MATCH_INTEL_FAM6_MODEL(ICELAKE_X, &icx_uncore_init),
X86_MATCH_INTEL_FAM6_MODEL(TIGERLAKE_L, &tgl_l_uncore_init),
X86_MATCH_INTEL_FAM6_MODEL(TIGERLAKE, &tgl_uncore_init),
+ X86_MATCH_INTEL_FAM6_MODEL(ROCKETLAKE, &rkl_uncore_init),
X86_MATCH_INTEL_FAM6_MODEL(ATOM_TREMONT_D, &snr_uncore_init),
{},
};
diff --git a/arch/x86/events/intel/uncore_snb.c
b/arch/x86/events/intel/uncore_snb.c
index bbd1120ae161..098f893e2e22 100644
--- a/arch/x86/events/intel/uncore_snb.c
+++ b/arch/x86/events/intel/uncore_snb.c
@@ -60,7 +60,8 @@
#define PCI_DEVICE_ID_INTEL_TGL_U3_IMC 0x9a12
#define PCI_DEVICE_ID_INTEL_TGL_U4_IMC 0x9a14
#define PCI_DEVICE_ID_INTEL_TGL_H_IMC 0x9a36
-
+#define PCI_DEVICE_ID_INTEL_RKL_1_IMC 0x4c43
+#define PCI_DEVICE_ID_INTEL_RKL_2_IMC 0x4c53
/* SNB event control */
#define SNB_UNC_CTL_EV_SEL_MASK 0x000000ff
@@ -405,6 +406,12 @@ static struct intel_uncore_type *tgl_msr_uncores[] = {
NULL,
};
+static void rkl_uncore_msr_init_box(struct intel_uncore_box *box)
+{
+ if (box->pmu->pmu_idx == 0)
+ wrmsrl(SKL_UNC_PERF_GLOBAL_CTL, SNB_UNC_GLOBAL_CTL_EN);
+}
+
void tgl_uncore_cpu_init(void)
{
uncore_msr_uncores = tgl_msr_uncores;
@@ -412,6 +419,7 @@ void tgl_uncore_cpu_init(void)
icl_uncore_cbox.ops = &skl_uncore_msr_ops;
icl_uncore_clockbox.ops = &skl_uncore_msr_ops;
snb_uncore_arb.ops = &skl_uncore_msr_ops;
+ skl_uncore_msr_ops.init_box = rkl_uncore_msr_init_box;
}
enum {
@@ -926,6 +934,14 @@ static const struct pci_device_id icl_uncore_pci_ids[] = {
PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICL_U2_IMC),
.driver_data = UNCORE_PCI_DEV_DATA(SNB_PCI_UNCORE_IMC, 0),
},
+ { /* IMC */
+ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_RKL_1_IMC),
+ .driver_data = UNCORE_PCI_DEV_DATA(SNB_PCI_UNCORE_IMC, 0),
+ },
+ { /* IMC */
+ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_RKL_2_IMC),
+ .driver_data = UNCORE_PCI_DEV_DATA(SNB_PCI_UNCORE_IMC, 0),
+ },
{ /* end: all zeroes */ },
};
@@ -1019,6 +1035,8 @@ static const struct imc_uncore_pci_dev
desktop_imc_pci_ids[] = {
IMC_DEV(CML_S5_IMC, &skl_uncore_pci_driver),
IMC_DEV(ICL_U_IMC, &icl_uncore_pci_driver), /* 10th Gen Core Mobile
*/
IMC_DEV(ICL_U2_IMC, &icl_uncore_pci_driver), /* 10th Gen Core Mobile
*/
+ IMC_DEV(RKL_1_IMC, &icl_uncore_pci_driver),
+ IMC_DEV(RKL_2_IMC, &icl_uncore_pci_driver),
{ /* end marker */ }
};
diff --git a/arch/x86/events/msr.c b/arch/x86/events/msr.c
index 4be8f9cabd07..680404c58cb1 100644
--- a/arch/x86/events/msr.c
+++ b/arch/x86/events/msr.c
@@ -99,6 +99,7 @@ static bool test_intel(int idx, void *data)
case INTEL_FAM6_ICELAKE_D:
case INTEL_FAM6_TIGERLAKE_L:
case INTEL_FAM6_TIGERLAKE:
+ case INTEL_FAM6_ROCKETLAKE:
if (idx == PERF_MSR_SMI || idx == PERF_MSR_PPERF)
return true;
break;
diff --git a/arch/x86/events/perf_event.h b/arch/x86/events/perf_event.h
index 6a8edfe59b09..7895cf4c59a7 100644
--- a/arch/x86/events/perf_event.h
+++ b/arch/x86/events/perf_event.h
@@ -132,7 +132,7 @@ struct amd_nb {
PERF_SAMPLE_DATA_SRC | PERF_SAMPLE_IDENTIFIER | \
PERF_SAMPLE_TRANSACTION | PERF_SAMPLE_PHYS_ADDR | \
PERF_SAMPLE_REGS_INTR | PERF_SAMPLE_REGS_USER | \
- PERF_SAMPLE_PERIOD)
+ PERF_SAMPLE_PERIOD | PERF_SAMPLE_CODE_PAGE_SIZE)
#define PEBS_GP_REGS \
((1ULL << PERF_REG_X86_AX) | \
diff --git a/arch/x86/kernel/kprobes/core.c b/arch/x86/kernel/kprobes/core.c
index 547c7abb39f5..a65e9e97857f 100644
--- a/arch/x86/kernel/kprobes/core.c
+++ b/arch/x86/kernel/kprobes/core.c
@@ -864,6 +864,7 @@ static void resume_execution(struct kprobe *p, struct
pt_regs *regs,
p->ainsn.boostable = true;
goto no_change;
}
+ break;
default:
break;
}
@@ -937,6 +938,11 @@ int kprobe_fault_handler(struct pt_regs *regs, int trapnr)
* So clear it by resetting the current kprobe:
*/
regs->flags &= ~X86_EFLAGS_TF;
+ /*
+ * Since the single step (trap) has been cancelled,
+ * we need to restore BTF here.
+ */
+ restore_btf();
/*
* If the TF flag was set before the kprobe hit,
diff --git a/arch/x86/kernel/uprobes.c b/arch/x86/kernel/uprobes.c
index 3fdaa042823d..90f44f44c209 100644
--- a/arch/x86/kernel/uprobes.c
+++ b/arch/x86/kernel/uprobes.c
@@ -1015,6 +1015,8 @@ int arch_uprobe_exception_notify(struct notifier_block
*self, unsigned long val,
if (uprobe_post_sstep_notifier(regs))
ret = NOTIFY_STOP;
+ break;
+
default:
break;
}
diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h
index 96450f6fb1de..9a38f579bc76 100644
--- a/include/linux/perf_event.h
+++ b/include/linux/perf_event.h
@@ -1028,6 +1028,8 @@ struct perf_sample_data {
u64 phys_addr;
u64 cgroup;
+ u64 data_page_size;
+ u64 code_page_size;
} ____cacheline_aligned;
/* default value for data source */
@@ -1585,4 +1587,8 @@ extern void __weak arch_perf_update_userpage(struct
perf_event *event,
struct perf_event_mmap_page
*userpg,
u64 now);
+#ifdef CONFIG_MMU
+extern __weak u64 arch_perf_get_page_size(struct mm_struct *mm, unsigned long
addr);
+#endif
+
#endif /* _LINUX_PERF_EVENT_H */
diff --git a/include/linux/pgtable.h b/include/linux/pgtable.h
index 71125a4676c4..fefbbdbbb3f3 100644
--- a/include/linux/pgtable.h
+++ b/include/linux/pgtable.h
@@ -258,6 +258,61 @@ static inline pte_t ptep_get(pte_t *ptep)
}
#endif
+#ifdef CONFIG_GUP_GET_PTE_LOW_HIGH
+/*
+ * WARNING: only to be used in the get_user_pages_fast() implementation.
+ *
+ * With get_user_pages_fast(), we walk down the pagetables without taking any
+ * locks. For this we would like to load the pointers atomically, but
sometimes
+ * that is not possible (e.g. without expensive cmpxchg8b on x86_32 PAE). What
+ * we do have is the guarantee that a PTE will only either go from not present
+ * to present, or present to not present or both -- it will not switch to a
+ * completely different present page without a TLB flush in between; something
+ * that we are blocking by holding interrupts off.
+ *
+ * Setting ptes from not present to present goes:
+ *
+ * ptep->pte_high = h;
+ * smp_wmb();
+ * ptep->pte_low = l;
+ *
+ * And present to not present goes:
+ *
+ * ptep->pte_low = 0;
+ * smp_wmb();
+ * ptep->pte_high = 0;
+ *
+ * We must ensure here that the load of pte_low sees 'l' IFF pte_high sees 'h'.
+ * We load pte_high *after* loading pte_low, which ensures we don't see an
older
+ * value of pte_high. *Then* we recheck pte_low, which ensures that we haven't
+ * picked up a changed pte high. We might have gotten rubbish values from
+ * pte_low and pte_high, but we are guaranteed that pte_low will not have the
+ * present bit set *unless* it is 'l'. Because get_user_pages_fast() only
+ * operates on present ptes we're safe.
+ */
+static inline pte_t ptep_get_lockless(pte_t *ptep)
+{
+ pte_t pte;
+
+ do {
+ pte.pte_low = ptep->pte_low;
+ smp_rmb();
+ pte.pte_high = ptep->pte_high;
+ smp_rmb();
+ } while (unlikely(pte.pte_low != ptep->pte_low));
+
+ return pte;
+}
+#else /* CONFIG_GUP_GET_PTE_LOW_HIGH */
+/*
+ * We require that the PTE can be read atomically.
+ */
+static inline pte_t ptep_get_lockless(pte_t *ptep)
+{
+ return ptep_get(ptep);
+}
+#endif /* CONFIG_GUP_GET_PTE_LOW_HIGH */
+
#ifdef CONFIG_TRANSPARENT_HUGEPAGE
#ifndef __HAVE_ARCH_PMDP_HUGE_GET_AND_CLEAR
static inline pmd_t pmdp_huge_get_and_clear(struct mm_struct *mm,
@@ -1481,4 +1536,20 @@ typedef unsigned int pgtbl_mod_mask;
#define pmd_leaf(x) 0
#endif
+#ifndef pgd_leaf_size
+#define pgd_leaf_size(x) (1ULL << PGDIR_SHIFT)
+#endif
+#ifndef p4d_leaf_size
+#define p4d_leaf_size(x) P4D_SIZE
+#endif
+#ifndef pud_leaf_size
+#define pud_leaf_size(x) PUD_SIZE
+#endif
+#ifndef pmd_leaf_size
+#define pmd_leaf_size(x) PMD_SIZE
+#endif
+#ifndef pte_leaf_size
+#define pte_leaf_size(x) PAGE_SIZE
+#endif
+
#endif /* _LINUX_PGTABLE_H */
diff --git a/include/uapi/linux/perf_event.h b/include/uapi/linux/perf_event.h
index b95d3c485d27..b15e3447cd9f 100644
--- a/include/uapi/linux/perf_event.h
+++ b/include/uapi/linux/perf_event.h
@@ -143,8 +143,10 @@ enum perf_event_sample_format {
PERF_SAMPLE_PHYS_ADDR = 1U << 19,
PERF_SAMPLE_AUX = 1U << 20,
PERF_SAMPLE_CGROUP = 1U << 21,
+ PERF_SAMPLE_DATA_PAGE_SIZE = 1U << 22,
+ PERF_SAMPLE_CODE_PAGE_SIZE = 1U << 23,
- PERF_SAMPLE_MAX = 1U << 22, /* non-ABI */
+ PERF_SAMPLE_MAX = 1U << 24, /* non-ABI */
__PERF_SAMPLE_CALLCHAIN_EARLY = 1ULL << 63, /* non-ABI;
internal use */
};
@@ -896,6 +898,8 @@ enum perf_event_type {
* { u64 phys_addr;} && PERF_SAMPLE_PHYS_ADDR
* { u64 size;
* char data[size]; } && PERF_SAMPLE_AUX
+ * { u64 data_page_size;} &&
PERF_SAMPLE_DATA_PAGE_SIZE
+ * { u64 code_page_size;} &&
PERF_SAMPLE_CODE_PAGE_SIZE
* };
*/
PERF_RECORD_SAMPLE = 9,
diff --git a/kernel/events/core.c b/kernel/events/core.c
index dc568ca295bd..19ae6c931c52 100644
--- a/kernel/events/core.c
+++ b/kernel/events/core.c
@@ -51,6 +51,8 @@
#include <linux/proc_ns.h>
#include <linux/mount.h>
#include <linux/min_heap.h>
+#include <linux/highmem.h>
+#include <linux/pgtable.h>
#include "internal.h"
@@ -1895,6 +1897,12 @@ static void __perf_event_header_size(struct perf_event
*event, u64 sample_type)
if (sample_type & PERF_SAMPLE_CGROUP)
size += sizeof(data->cgroup);
+ if (sample_type & PERF_SAMPLE_DATA_PAGE_SIZE)
+ size += sizeof(data->data_page_size);
+
+ if (sample_type & PERF_SAMPLE_CODE_PAGE_SIZE)
+ size += sizeof(data->code_page_size);
+
event->header_size = size;
}
@@ -6931,6 +6939,12 @@ void perf_output_sample(struct perf_output_handle
*handle,
if (sample_type & PERF_SAMPLE_CGROUP)
perf_output_put(handle, data->cgroup);
+ if (sample_type & PERF_SAMPLE_DATA_PAGE_SIZE)
+ perf_output_put(handle, data->data_page_size);
+
+ if (sample_type & PERF_SAMPLE_CODE_PAGE_SIZE)
+ perf_output_put(handle, data->code_page_size);
+
if (sample_type & PERF_SAMPLE_AUX) {
perf_output_put(handle, data->aux_size);
@@ -6988,6 +7002,93 @@ static u64 perf_virt_to_phys(u64 virt)
return phys_addr;
}
+/*
+ * Return the pagetable size of a given virtual address.
+ */
+static u64 perf_get_pgtable_size(struct mm_struct *mm, unsigned long addr)
+{
+ u64 size = 0;
+
+#ifdef CONFIG_HAVE_FAST_GUP
+ pgd_t *pgdp, pgd;
+ p4d_t *p4dp, p4d;
+ pud_t *pudp, pud;
+ pmd_t *pmdp, pmd;
+ pte_t *ptep, pte;
+
+ pgdp = pgd_offset(mm, addr);
+ pgd = READ_ONCE(*pgdp);
+ if (pgd_none(pgd))
+ return 0;
+
+ if (pgd_leaf(pgd))
+ return pgd_leaf_size(pgd);
+
+ p4dp = p4d_offset_lockless(pgdp, pgd, addr);
+ p4d = READ_ONCE(*p4dp);
+ if (!p4d_present(p4d))
+ return 0;
+
+ if (p4d_leaf(p4d))
+ return p4d_leaf_size(p4d);
+
+ pudp = pud_offset_lockless(p4dp, p4d, addr);
+ pud = READ_ONCE(*pudp);
+ if (!pud_present(pud))
+ return 0;
+
+ if (pud_leaf(pud))
+ return pud_leaf_size(pud);
+
+ pmdp = pmd_offset_lockless(pudp, pud, addr);
+ pmd = READ_ONCE(*pmdp);
+ if (!pmd_present(pmd))
+ return 0;
+
+ if (pmd_leaf(pmd))
+ return pmd_leaf_size(pmd);
+
+ ptep = pte_offset_map(&pmd, addr);
+ pte = ptep_get_lockless(ptep);
+ if (pte_present(pte))
+ size = pte_leaf_size(pte);
+ pte_unmap(ptep);
+#endif /* CONFIG_HAVE_FAST_GUP */
+
+ return size;
+}
+
+static u64 perf_get_page_size(unsigned long addr)
+{
+ struct mm_struct *mm;
+ unsigned long flags;
+ u64 size;
+
+ if (!addr)
+ return 0;
+
+ /*
+ * Software page-table walkers must disable IRQs,
+ * which prevents any tear down of the page tables.
+ */
+ local_irq_save(flags);
+
+ mm = current->mm;
+ if (!mm) {
+ /*
+ * For kernel threads and the like, use init_mm so that
+ * we can find kernel memory.
+ */
+ mm = &init_mm;
+ }
+
+ size = perf_get_pgtable_size(mm, addr);
+
+ local_irq_restore(flags);
+
+ return size;
+}
+
static struct perf_callchain_entry __empty_callchain = { .nr = 0, };
struct perf_callchain_entry *
@@ -7023,7 +7124,7 @@ void perf_prepare_sample(struct perf_event_header *header,
__perf_event_header__init_id(header, data, event);
- if (sample_type & PERF_SAMPLE_IP)
+ if (sample_type & (PERF_SAMPLE_IP | PERF_SAMPLE_CODE_PAGE_SIZE))
data->ip = perf_instruction_pointer(regs);
if (sample_type & PERF_SAMPLE_CALLCHAIN) {
@@ -7142,6 +7243,17 @@ void perf_prepare_sample(struct perf_event_header
*header,
}
#endif
+ /*
+ * PERF_DATA_PAGE_SIZE requires PERF_SAMPLE_ADDR. If the user doesn't
+ * require PERF_SAMPLE_ADDR, kernel implicitly retrieve the data->addr,
+ * but the value will not dump to the userspace.
+ */
+ if (sample_type & PERF_SAMPLE_DATA_PAGE_SIZE)
+ data->data_page_size = perf_get_page_size(data->addr);
+
+ if (sample_type & PERF_SAMPLE_CODE_PAGE_SIZE)
+ data->code_page_size = perf_get_page_size(data->ip);
+
if (sample_type & PERF_SAMPLE_AUX) {
u64 size;
@@ -11720,24 +11832,6 @@ SYSCALL_DEFINE5(perf_event_open,
goto err_task;
}
- if (task) {
- err =
mutex_lock_interruptible(&task->signal->exec_update_mutex);
- if (err)
- goto err_task;
-
- /*
- * Preserve ptrace permission check for backwards compatibility.
- *
- * We must hold exec_update_mutex across this and any potential
- * perf_install_in_context() call for this new event to
- * serialize against exec() altering our credentials (and the
- * perf_event_exit_task() that could imply).
- */
- err = -EACCES;
- if (!perfmon_capable() && !ptrace_may_access(task,
PTRACE_MODE_READ_REALCREDS))
- goto err_cred;
- }
-
if (flags & PERF_FLAG_PID_CGROUP)
cgroup_fd = pid;
@@ -11745,7 +11839,7 @@ SYSCALL_DEFINE5(perf_event_open,
NULL, NULL, cgroup_fd);
if (IS_ERR(event)) {
err = PTR_ERR(event);
- goto err_cred;
+ goto err_task;
}
if (is_sampling_event(event)) {
@@ -11864,6 +11958,24 @@ SYSCALL_DEFINE5(perf_event_open,
goto err_context;
}
+ if (task) {
+ err =
mutex_lock_interruptible(&task->signal->exec_update_mutex);
+ if (err)
+ goto err_file;
+
+ /*
+ * Preserve ptrace permission check for backwards compatibility.
+ *
+ * We must hold exec_update_mutex across this and any potential
+ * perf_install_in_context() call for this new event to
+ * serialize against exec() altering our credentials (and the
+ * perf_event_exit_task() that could imply).
+ */
+ err = -EACCES;
+ if (!perfmon_capable() && !ptrace_may_access(task,
PTRACE_MODE_READ_REALCREDS))
+ goto err_cred;
+ }
+
if (move_group) {
gctx = __perf_event_ctx_lock_double(group_leader, ctx);
@@ -12039,7 +12151,10 @@ SYSCALL_DEFINE5(perf_event_open,
if (move_group)
perf_event_ctx_unlock(group_leader, gctx);
mutex_unlock(&ctx->mutex);
-/* err_file: */
+err_cred:
+ if (task)
+ mutex_unlock(&task->signal->exec_update_mutex);
+err_file:
fput(event_file);
err_context:
perf_unpin_context(ctx);
@@ -12051,9 +12166,6 @@ SYSCALL_DEFINE5(perf_event_open,
*/
if (!event_file)
free_event(event);
-err_cred:
- if (task)
- mutex_unlock(&task->signal->exec_update_mutex);
err_task:
if (task)
put_task_struct(task);
diff --git a/mm/gup.c b/mm/gup.c
index 98eb8e6d2609..44b0c6b89602 100644
--- a/mm/gup.c
+++ b/mm/gup.c
@@ -2085,62 +2085,6 @@ static void put_compound_head(struct page *page, int
refs, unsigned int flags)
put_page(page);
}
-#ifdef CONFIG_GUP_GET_PTE_LOW_HIGH
-
-/*
- * WARNING: only to be used in the get_user_pages_fast() implementation.
- *
- * With get_user_pages_fast(), we walk down the pagetables without taking any
- * locks. For this we would like to load the pointers atomically, but
sometimes
- * that is not possible (e.g. without expensive cmpxchg8b on x86_32 PAE). What
- * we do have is the guarantee that a PTE will only either go from not present
- * to present, or present to not present or both -- it will not switch to a
- * completely different present page without a TLB flush in between; something
- * that we are blocking by holding interrupts off.
- *
- * Setting ptes from not present to present goes:
- *
- * ptep->pte_high = h;
- * smp_wmb();
- * ptep->pte_low = l;
- *
- * And present to not present goes:
- *
- * ptep->pte_low = 0;
- * smp_wmb();
- * ptep->pte_high = 0;
- *
- * We must ensure here that the load of pte_low sees 'l' IFF pte_high sees 'h'.
- * We load pte_high *after* loading pte_low, which ensures we don't see an
older
- * value of pte_high. *Then* we recheck pte_low, which ensures that we haven't
- * picked up a changed pte high. We might have gotten rubbish values from
- * pte_low and pte_high, but we are guaranteed that pte_low will not have the
- * present bit set *unless* it is 'l'. Because get_user_pages_fast() only
- * operates on present ptes we're safe.
- */
-static inline pte_t gup_get_pte(pte_t *ptep)
-{
- pte_t pte;
-
- do {
- pte.pte_low = ptep->pte_low;
- smp_rmb();
- pte.pte_high = ptep->pte_high;
- smp_rmb();
- } while (unlikely(pte.pte_low != ptep->pte_low));
-
- return pte;
-}
-#else /* CONFIG_GUP_GET_PTE_LOW_HIGH */
-/*
- * We require that the PTE can be read atomically.
- */
-static inline pte_t gup_get_pte(pte_t *ptep)
-{
- return ptep_get(ptep);
-}
-#endif /* CONFIG_GUP_GET_PTE_LOW_HIGH */
-
static void __maybe_unused undo_dev_pagemap(int *nr, int nr_start,
unsigned int flags,
struct page **pages)
@@ -2166,7 +2110,7 @@ static int gup_pte_range(pmd_t pmd, unsigned long addr,
unsigned long end,
ptem = ptep = pte_offset_map(&pmd, addr);
do {
- pte_t pte = gup_get_pte(ptep);
+ pte_t pte = ptep_get_lockless(ptep);
struct page *head, *page;
/*
