diff options
Diffstat (limited to 'tools/perf')
| -rw-r--r-- | tools/perf/Makefile.perf | 6 | ||||
| -rwxr-xr-x | tools/perf/check-headers.sh | 2 | ||||
| -rw-r--r-- | tools/perf/trace/beauty/arch/x86/include/asm/irq_vectors.h | 142 | ||||
| -rwxr-xr-x | tools/perf/trace/beauty/tracepoints/x86_irq_vectors.sh | 6 |
4 files changed, 150 insertions, 6 deletions
diff --git a/tools/perf/Makefile.perf b/tools/perf/Makefile.perf index 757777d96860..c75342b21089 100644 --- a/tools/perf/Makefile.perf +++ b/tools/perf/Makefile.perf @@ -474,6 +474,8 @@ arm64-sysreg-defs-clean: beauty_linux_dir := $(srctree)/tools/perf/trace/beauty/include/linux/ beauty_uapi_linux_dir := $(srctree)/tools/perf/trace/beauty/include/uapi/linux/ beauty_uapi_sound_dir := $(srctree)/tools/perf/trace/beauty/include/uapi/sound/ +beauty_arch_asm_dir := $(srctree)/tools/perf/trace/beauty/arch/x86/include/asm/ + linux_uapi_dir := $(srctree)/tools/include/uapi/linux asm_generic_uapi_dir := $(srctree)/tools/include/uapi/asm-generic arch_asm_uapi_dir := $(srctree)/tools/arch/$(SRCARCH)/include/uapi/asm/ @@ -636,8 +638,8 @@ $(x86_arch_prctl_code_array): $(x86_arch_asm_uapi_dir)/prctl.h $(x86_arch_prctl_ x86_arch_irq_vectors_array := $(beauty_outdir)/x86_arch_irq_vectors_array.c x86_arch_irq_vectors_tbl := $(srctree)/tools/perf/trace/beauty/tracepoints/x86_irq_vectors.sh -$(x86_arch_irq_vectors_array): $(x86_arch_asm_dir)/irq_vectors.h $(x86_arch_irq_vectors_tbl) - $(Q)$(SHELL) '$(x86_arch_irq_vectors_tbl)' $(x86_arch_asm_dir) > $@ +$(x86_arch_irq_vectors_array): $(beauty_arch_asm_dir)/irq_vectors.h $(x86_arch_irq_vectors_tbl) + $(Q)$(SHELL) '$(x86_arch_irq_vectors_tbl)' $(beauty_arch_asm_dir) > $@ x86_arch_MSRs_array := $(beauty_outdir)/x86_arch_MSRs_array.c x86_arch_MSRs_tbl := $(srctree)/tools/perf/trace/beauty/tracepoints/x86_msr.sh diff --git a/tools/perf/check-headers.sh b/tools/perf/check-headers.sh index 93ad7a787a19..b35eba5e99c8 100755 --- a/tools/perf/check-headers.sh +++ b/tools/perf/check-headers.sh @@ -34,7 +34,6 @@ FILES=( "arch/x86/include/asm/cpufeatures.h" "arch/x86/include/asm/inat_types.h" "arch/x86/include/asm/emulate_prefix.h" - "arch/x86/include/asm/irq_vectors.h" "arch/x86/include/asm/msr-index.h" "arch/x86/include/uapi/asm/prctl.h" "arch/x86/lib/x86-opcode-map.txt" @@ -93,6 +92,7 @@ SYNC_CHECK_FILES=( declare -a BEAUTY_FILES BEAUTY_FILES=( + "arch/x86/include/asm/irq_vectors.h" "include/linux/socket.h" "include/uapi/linux/fs.h" "include/uapi/linux/mount.h" diff --git a/tools/perf/trace/beauty/arch/x86/include/asm/irq_vectors.h b/tools/perf/trace/beauty/arch/x86/include/asm/irq_vectors.h new file mode 100644 index 000000000000..3f73ac3ed3a0 --- /dev/null +++ b/tools/perf/trace/beauty/arch/x86/include/asm/irq_vectors.h @@ -0,0 +1,142 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef _ASM_X86_IRQ_VECTORS_H +#define _ASM_X86_IRQ_VECTORS_H + +#include <linux/threads.h> +/* + * Linux IRQ vector layout. + * + * There are 256 IDT entries (per CPU - each entry is 8 bytes) which can + * be defined by Linux. They are used as a jump table by the CPU when a + * given vector is triggered - by a CPU-external, CPU-internal or + * software-triggered event. + * + * Linux sets the kernel code address each entry jumps to early during + * bootup, and never changes them. This is the general layout of the + * IDT entries: + * + * Vectors 0 ... 31 : system traps and exceptions - hardcoded events + * Vectors 32 ... 127 : device interrupts + * Vector 128 : legacy int80 syscall interface + * Vectors 129 ... LOCAL_TIMER_VECTOR-1 + * Vectors LOCAL_TIMER_VECTOR ... 255 : special interrupts + * + * 64-bit x86 has per CPU IDT tables, 32-bit has one shared IDT table. + * + * This file enumerates the exact layout of them: + */ + +/* This is used as an interrupt vector when programming the APIC. */ +#define NMI_VECTOR 0x02 + +/* + * IDT vectors usable for external interrupt sources start at 0x20. + * (0x80 is the syscall vector, 0x30-0x3f are for ISA) + */ +#define FIRST_EXTERNAL_VECTOR 0x20 + +#define IA32_SYSCALL_VECTOR 0x80 + +/* + * Vectors 0x30-0x3f are used for ISA interrupts. + * round up to the next 16-vector boundary + */ +#define ISA_IRQ_VECTOR(irq) (((FIRST_EXTERNAL_VECTOR + 16) & ~15) + irq) + +/* + * Special IRQ vectors used by the SMP architecture, 0xf0-0xff + * + * some of the following vectors are 'rare', they are merged + * into a single vector (CALL_FUNCTION_VECTOR) to save vector space. + * TLB, reschedule and local APIC vectors are performance-critical. + */ + +#define SPURIOUS_APIC_VECTOR 0xff +/* + * Sanity check + */ +#if ((SPURIOUS_APIC_VECTOR & 0x0F) != 0x0F) +# error SPURIOUS_APIC_VECTOR definition error +#endif + +#define ERROR_APIC_VECTOR 0xfe +#define RESCHEDULE_VECTOR 0xfd +#define CALL_FUNCTION_VECTOR 0xfc +#define CALL_FUNCTION_SINGLE_VECTOR 0xfb +#define THERMAL_APIC_VECTOR 0xfa +#define THRESHOLD_APIC_VECTOR 0xf9 +#define REBOOT_VECTOR 0xf8 + +/* + * Generic system vector for platform specific use + */ +#define X86_PLATFORM_IPI_VECTOR 0xf7 + +/* + * IRQ work vector: + */ +#define IRQ_WORK_VECTOR 0xf6 + +/* 0xf5 - unused, was UV_BAU_MESSAGE */ +#define DEFERRED_ERROR_VECTOR 0xf4 + +/* Vector on which hypervisor callbacks will be delivered */ +#define HYPERVISOR_CALLBACK_VECTOR 0xf3 + +/* Vector for KVM to deliver posted interrupt IPI */ +#if IS_ENABLED(CONFIG_KVM) +#define POSTED_INTR_VECTOR 0xf2 +#define POSTED_INTR_WAKEUP_VECTOR 0xf1 +#define POSTED_INTR_NESTED_VECTOR 0xf0 +#endif + +#define MANAGED_IRQ_SHUTDOWN_VECTOR 0xef + +#if IS_ENABLED(CONFIG_HYPERV) +#define HYPERV_REENLIGHTENMENT_VECTOR 0xee +#define HYPERV_STIMER0_VECTOR 0xed +#endif + +#define LOCAL_TIMER_VECTOR 0xec + +#define NR_VECTORS 256 + +#ifdef CONFIG_X86_LOCAL_APIC +#define FIRST_SYSTEM_VECTOR LOCAL_TIMER_VECTOR +#else +#define FIRST_SYSTEM_VECTOR NR_VECTORS +#endif + +#define NR_EXTERNAL_VECTORS (FIRST_SYSTEM_VECTOR - FIRST_EXTERNAL_VECTOR) +#define NR_SYSTEM_VECTORS (NR_VECTORS - FIRST_SYSTEM_VECTOR) + +/* + * Size the maximum number of interrupts. + * + * If the irq_desc[] array has a sparse layout, we can size things + * generously - it scales up linearly with the maximum number of CPUs, + * and the maximum number of IO-APICs, whichever is higher. + * + * In other cases we size more conservatively, to not create too large + * static arrays. + */ + +#define NR_IRQS_LEGACY 16 + +#define CPU_VECTOR_LIMIT (64 * NR_CPUS) +#define IO_APIC_VECTOR_LIMIT (32 * MAX_IO_APICS) + +#if defined(CONFIG_X86_IO_APIC) && defined(CONFIG_PCI_MSI) +#define NR_IRQS \ + (CPU_VECTOR_LIMIT > IO_APIC_VECTOR_LIMIT ? \ + (NR_VECTORS + CPU_VECTOR_LIMIT) : \ + (NR_VECTORS + IO_APIC_VECTOR_LIMIT)) +#elif defined(CONFIG_X86_IO_APIC) +#define NR_IRQS (NR_VECTORS + IO_APIC_VECTOR_LIMIT) +#elif defined(CONFIG_PCI_MSI) +#define NR_IRQS (NR_VECTORS + CPU_VECTOR_LIMIT) +#else +#define NR_IRQS NR_IRQS_LEGACY +#endif + +#endif /* _ASM_X86_IRQ_VECTORS_H */ diff --git a/tools/perf/trace/beauty/tracepoints/x86_irq_vectors.sh b/tools/perf/trace/beauty/tracepoints/x86_irq_vectors.sh index 87dc68c7de0c..d8e927dd2bb7 100755 --- a/tools/perf/trace/beauty/tracepoints/x86_irq_vectors.sh +++ b/tools/perf/trace/beauty/tracepoints/x86_irq_vectors.sh @@ -3,12 +3,12 @@ # (C) 2019, Arnaldo Carvalho de Melo <acme@redhat.com> if [ $# -ne 1 ] ; then - arch_x86_header_dir=tools/arch/x86/include/asm/ + beauty_arch_asm_dir=tools/perf/trace/beauty/arch/x86/include/asm/ else - arch_x86_header_dir=$1 + beauty_arch_asm_dir=$1 fi -x86_irq_vectors=${arch_x86_header_dir}/irq_vectors.h +x86_irq_vectors=${beauty_arch_asm_dir}/irq_vectors.h # FIRST_EXTERNAL_VECTOR is not that useful, find what is its number # and then replace whatever is using it and that is useful, which at |