arch/x86/events/intel/core.c

File Facts

System

Linux kernel

Corpus path

arch/x86/events/intel/core.c

Extension

.c

Size

264774 bytes

Lines

8935

Domain

Architecture Layer

Bucket

arch/x86

Inferred role

Architecture Layer: exported/initcall integration point

Status

integration implementation candidate

Why This File Exists

CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.

• CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.
• Exports symbols or registers init work; inspect boot/module ordering and who consumes the exported contract.
• Uses kernel synchronization; read lock ordering, sleepability, and interrupt context assumptions before translating.
• Allocates kernel memory; connect allocation flags and lifetime to context constraints.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• linux/stddef.h
• linux/types.h
• linux/init.h
• linux/slab.h
• linux/export.h
• linux/nmi.h
• linux/kvm_host.h
• asm/cpufeature.h
• asm/cpuid/api.h
• asm/debugreg.h
• asm/hardirq.h
• asm/intel-family.h
• asm/intel_pt.h
• asm/apic.h
• asm/cpu_device_id.h
• asm/msr.h
• ../perf_event.h

Detected Declarations

• enum dyn_constr_type
• function intel_pmu_event_map
• function disable_all
• function intel_pmu_disable_all
• function __intel_pmu_enable_all
• function intel_pmu_enable_all
• function __intel_pmu_snapshot_branch_stack
• function intel_pmu_snapshot_branch_stack
• function intel_pmu_snapshot_arch_branch_stack
• function AAK100
• function intel_pmu_nhm_enable_all
• function intel_set_tfa
• function intel_tfa_commit_scheduling
• function intel_tfa_pmu_enable_all
• function intel_pmu_get_status
• function intel_pmu_ack_status
• function event_is_checkpointed
• function intel_set_masks
• function intel_clear_masks
• function intel_pmu_disable_fixed
• function __intel_pmu_update_event_ext
• function intel_pmu_disable_event_ext
• function intel_pmu_disable_event
• function intel_pmu_assign_event
• function intel_pmu_needs_branch_stack
• function intel_pmu_del_event
• function icl_set_topdown_event_period
• function icl_get_metrics_event_value
• function icl_get_topdown_value
• function __icl_update_topdown_event
• function update_saved_topdown_regs
• function for_each_set_bit
• function intel_update_topdown_event
• function for_each_set_bit
• function icl_update_topdown_event
• function intel_pmu_read_event
• function intel_pmu_enable_fixed
• function intel_pmu_config_acr
• function intel_pmu_enable_acr
• function intel_pmu_enable_event_ext
• function intel_pmu_update_rdpmc_user_disable
• function intel_pmu_enable_event
• function intel_pmu_acr_late_setup
• function for_each_set_bit
• function intel_pmu_late_setup
• function intel_pmu_add_event
• function intel_pmu_save_and_restart
• function intel_pmu_set_period

Annotated Snippet

subsys_initcall(fixup_ht_bug)

Annotation

• Immediate include surface: `linux/stddef.h`, `linux/types.h`, `linux/init.h`, `linux/slab.h`, `linux/export.h`, `linux/nmi.h`, `linux/kvm_host.h`, `asm/cpufeature.h`.
• Detected declarations: `enum dyn_constr_type`, `function intel_pmu_event_map`, `function disable_all`, `function intel_pmu_disable_all`, `function __intel_pmu_enable_all`, `function intel_pmu_enable_all`, `function __intel_pmu_snapshot_branch_stack`, `function intel_pmu_snapshot_branch_stack`, `function intel_pmu_snapshot_arch_branch_stack`, `function AAK100`.
• Atlas domain: Architecture Layer / arch/x86.
• Implementation status: integration implementation candidate.
• Synchronization appears in or near this file; preserve lock ordering, sleepability, and interrupt-context constraints.

Implementation Notes

• This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
• Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
• Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.