jmp ret_from_intr; \
ENDPROC(name)
-
-#ifdef CONFIG_TRACING
-# define TRACE_BUILD_INTERRUPT(name, nr) BUILD_INTERRUPT3(trace_##name, nr, smp_trace_##name)
-#else
-# define TRACE_BUILD_INTERRUPT(name, nr)
-#endif
-
#define BUILD_INTERRUPT(name, nr) \
BUILD_INTERRUPT3(name, nr, smp_##name); \
- TRACE_BUILD_INTERRUPT(name, nr)
/* The include is where all of the SMP etc. interrupts come from */
#include <asm/entry_arch.h>
ENDPROC(xen_failsafe_callback)
BUILD_INTERRUPT3(xen_hvm_callback_vector, HYPERVISOR_CALLBACK_VECTOR,
- xen_evtchn_do_upcall)
+ xen_evtchn_do_upcall)
#endif /* CONFIG_XEN */
#if IS_ENABLED(CONFIG_HYPERV)
BUILD_INTERRUPT3(hyperv_callback_vector, HYPERVISOR_CALLBACK_VECTOR,
- hyperv_vector_handler)
+ hyperv_vector_handler)
#endif /* CONFIG_HYPERV */
END(\sym)
.endm
-#ifdef CONFIG_TRACING
-#define trace(sym) trace_##sym
-#define smp_trace(sym) smp_trace_##sym
-
-.macro trace_apicinterrupt num sym
-apicinterrupt3 \num trace(\sym) smp_trace(\sym)
-.endm
-#else
-.macro trace_apicinterrupt num sym do_sym
-.endm
-#endif
-
/* Make sure APIC interrupt handlers end up in the irqentry section: */
#if defined(CONFIG_FUNCTION_GRAPH_TRACER) || defined(CONFIG_KASAN)
# define PUSH_SECTION_IRQENTRY .pushsection .irqentry.text, "ax"
.macro apicinterrupt num sym do_sym
PUSH_SECTION_IRQENTRY
apicinterrupt3 \num \sym \do_sym
-trace_apicinterrupt \num \sym
POP_SECTION_IRQENTRY
.endm
}
#endif
-#ifdef CONFIG_TRACING
-extern struct desc_ptr trace_idt_descr;
-extern gate_desc trace_idt_table[];
-static inline void write_trace_idt_entry(int entry, const gate_desc *gate)
-{
- write_idt_entry(trace_idt_table, entry, gate);
-}
-
-static inline void _trace_set_gate(int gate, unsigned type, void *addr,
- unsigned dpl, unsigned ist, unsigned seg)
-{
- gate_desc s;
-
- pack_gate(&s, type, (unsigned long)addr, dpl, ist, seg);
- /*
- * does not need to be atomic because it is only done once at
- * setup time
- */
- write_trace_idt_entry(gate, &s);
-}
-#else
-static inline void write_trace_idt_entry(int entry, const gate_desc *gate)
-{
-}
-
-#define _trace_set_gate(gate, type, addr, dpl, ist, seg)
-#endif
-
-static inline void _set_gate(int gate, unsigned type, void *addr,
+static inline void _set_gate(int gate, unsigned type, const void *addr,
unsigned dpl, unsigned ist, unsigned seg)
{
gate_desc s;
* setup time
*/
write_idt_entry(idt_table, gate, &s);
- write_trace_idt_entry(gate, &s);
}
-/*
- * This needs to use 'idt_table' rather than 'idt', and
- * thus use the _nonmapped_ version of the IDT, as the
- * Pentium F0 0F bugfix can have resulted in the mapped
- * IDT being write-protected.
- */
-#define set_intr_gate_notrace(n, addr) \
- do { \
- BUG_ON((unsigned)n > 0xFF); \
- _set_gate(n, GATE_INTERRUPT, (void *)addr, 0, 0, \
- __KERNEL_CS); \
- } while (0)
-
-#define set_intr_gate(n, addr) \
- do { \
- set_intr_gate_notrace(n, addr); \
- _trace_set_gate(n, GATE_INTERRUPT, (void *)trace_##addr,\
- 0, 0, __KERNEL_CS); \
- } while (0)
+static inline void set_intr_gate(unsigned int n, const void *addr)
+{
+ BUG_ON(n > 0xFF);
+ _set_gate(n, GATE_INTERRUPT, addr, 0, 0, __KERNEL_CS);
+}
extern unsigned long used_vectors[];
}
#endif
-#ifdef CONFIG_TRACING
-extern atomic_t trace_idt_ctr;
-static inline bool is_trace_idt_enabled(void)
-{
- if (atomic_read(&trace_idt_ctr))
- return true;
-
- return false;
-}
-
-static inline void load_trace_idt(void)
-{
- load_idt((const struct desc_ptr *)&trace_idt_descr);
-}
-#else
-static inline bool is_trace_idt_enabled(void)
-{
- return false;
-}
-
-static inline void load_trace_idt(void)
-{
-}
-#endif
-
/*
* The load_current_idt() must be called with interrupts disabled
* to avoid races. That way the IDT will always be set back to the expected
{
if (is_debug_idt_enabled())
load_debug_idt();
- else if (is_trace_idt_enabled())
- load_trace_idt();
else
load_idt((const struct desc_ptr *)&idt_descr);
}
extern asmlinkage void call_function_interrupt(void);
extern asmlinkage void call_function_single_interrupt(void);
-#ifdef CONFIG_TRACING
-/* Interrupt handlers registered during init_IRQ */
-#define trace_reschedule_interrupt reschedule_interrupt
-#define trace_call_function_interrupt call_function_interrupt
-#define trace_call_function_single_interrupt call_function_single_interrupt
-#define trace_thermal_interrupt thermal_interrupt
-#define trace_threshold_interrupt threshold_interrupt
-#define trace_deferred_error_interrupt deferred_error_interrupt
-#define trace_irq_work_interrupt irq_work_interrupt
-#define trace_error_interrupt error_interrupt
-#define trace_spurious_interrupt spurious_interrupt
-#define trace_x86_platform_ipi x86_platform_ipi
-#define trace_apic_timer_interrupt apic_timer_interrupt
-#define trace_irq_move_cleanup_interrupt irq_move_cleanup_interrupt
-#define trace_reboot_interrupt reboot_interrupt
-#define trace_kvm_posted_intr_ipi kvm_posted_intr_ipi
-#define trace_kvm_posted_intr_wakeup_ipi kvm_posted_intr_wakeup_ipi
-#define trace_kvm_posted_intr_nested_ipi kvm_posted_intr_nested_ipi
-#endif /* CONFIG_TRACING */
-
#ifdef CONFIG_X86_LOCAL_APIC
struct irq_data;
struct pci_dev;
#ifndef __ASSEMBLY__
extern const char early_idt_handler_array[NUM_EXCEPTION_VECTORS][EARLY_IDT_HANDLER_SIZE];
-#ifdef CONFIG_TRACING
-# define trace_early_idt_handler_array early_idt_handler_array
-#endif
/*
* Load a segment. Fall back on loading the zero segment if something goes
#include <asm/hw_irq.h>
#include <asm/desc.h>
-atomic_t trace_idt_ctr = ATOMIC_INIT(0);
-struct desc_ptr trace_idt_descr = { NR_VECTORS * 16 - 1,
- (unsigned long) trace_idt_table };
-
-/* No need to be aligned, but done to keep all IDTs defined the same way. */
-gate_desc trace_idt_table[NR_VECTORS] __page_aligned_bss;
-
DEFINE_STATIC_KEY_FALSE(trace_irqvectors_key);
-static int trace_irq_vector_refcount;
-static DEFINE_MUTEX(irq_vector_mutex);
-
-static void set_trace_idt_ctr(int val)
-{
- atomic_set(&trace_idt_ctr, val);
- /* Ensure the trace_idt_ctr is set before sending IPI */
- wmb();
-}
-
-static void switch_idt(void *arg)
-{
- unsigned long flags;
-
- local_irq_save(flags);
- load_current_idt();
- local_irq_restore(flags);
-}
int trace_irq_vector_regfunc(void)
{
static_branch_inc(&trace_irqvectors_key);
-
- mutex_lock(&irq_vector_mutex);
- if (!trace_irq_vector_refcount) {
- set_trace_idt_ctr(1);
- smp_call_function(switch_idt, NULL, 0);
- switch_idt(NULL);
- }
- trace_irq_vector_refcount++;
- mutex_unlock(&irq_vector_mutex);
return 0;
}
void trace_irq_vector_unregfunc(void)
{
static_branch_dec(&trace_irqvectors_key);
-
- mutex_lock(&irq_vector_mutex);
- trace_irq_vector_refcount--;
- if (!trace_irq_vector_refcount) {
- set_trace_idt_ctr(0);
- smp_call_function(switch_idt, NULL, 0);
- switch_idt(NULL);
- }
- mutex_unlock(&irq_vector_mutex);
}
* stack. Using the original stack works well enough at this
* early stage. DEBUG_STACK will be equipped after cpu_init() in
* trap_init().
- *
- * We don't need to set trace_idt_table like set_intr_gate(),
- * since we don't have trace_debug and it will be reset to
- * 'debug' in trap_init() by set_intr_gate_ist().
*/
- set_intr_gate_notrace(X86_TRAP_DB, debug);
+ set_intr_gate(X86_TRAP_DB, debug);
/* int3 can be called from all */
set_system_intr_gate(X86_TRAP_BP, &int3);
#ifdef CONFIG_X86_32
projects / users / jedix / linux-maple.git / commitdiff