diff options
Diffstat (limited to 'arch/x86/include')
| -rw-r--r-- | arch/x86/include/asm/fpu/internal.h | 5 | ||||
| -rw-r--r-- | arch/x86/include/asm/trace/fpu.h | 119 |
2 files changed, 124 insertions, 0 deletions
diff --git a/arch/x86/include/asm/fpu/internal.h b/arch/x86/include/asm/fpu/internal.h index 31ac8e6..116b583 100644 --- a/arch/x86/include/asm/fpu/internal.h +++ b/arch/x86/include/asm/fpu/internal.h @@ -18,6 +18,7 @@ #include <asm/fpu/api.h> #include <asm/fpu/xstate.h> #include <asm/cpufeature.h> +#include <asm/trace/fpu.h> /* * High level FPU state handling functions: @@ -524,6 +525,7 @@ static inline void __fpregs_deactivate(struct fpu *fpu) fpu->fpregs_active = 0; this_cpu_write(fpu_fpregs_owner_ctx, NULL); + trace_x86_fpu_regs_deactivated(fpu); } /* Must be paired with a 'clts' (fpregs_activate_hw()) before! */ @@ -533,6 +535,7 @@ static inline void __fpregs_activate(struct fpu *fpu) fpu->fpregs_active = 1; this_cpu_write(fpu_fpregs_owner_ctx, fpu); + trace_x86_fpu_regs_activated(fpu); } /* @@ -604,11 +607,13 @@ switch_fpu_prepare(struct fpu *old_fpu, struct fpu *new_fpu, int cpu) /* But leave fpu_fpregs_owner_ctx! */ old_fpu->fpregs_active = 0; + trace_x86_fpu_regs_deactivated(old_fpu); /* Don't change CR0.TS if we just switch! */ if (fpu.preload) { new_fpu->counter++; __fpregs_activate(new_fpu); + trace_x86_fpu_regs_activated(new_fpu); prefetch(&new_fpu->state); } else { __fpregs_deactivate_hw(); diff --git a/arch/x86/include/asm/trace/fpu.h b/arch/x86/include/asm/trace/fpu.h new file mode 100644 index 0000000..9217ab1 --- /dev/null +++ b/arch/x86/include/asm/trace/fpu.h @@ -0,0 +1,119 @@ +#undef TRACE_SYSTEM +#define TRACE_SYSTEM x86_fpu + +#if !defined(_TRACE_FPU_H) || defined(TRACE_HEADER_MULTI_READ) +#define _TRACE_FPU_H + +#include <linux/tracepoint.h> + +DECLARE_EVENT_CLASS(x86_fpu, + TP_PROTO(struct fpu *fpu), + TP_ARGS(fpu), + + TP_STRUCT__entry( + __field(struct fpu *, fpu) + __field(bool, fpregs_active) + __field(bool, fpstate_active) + __field(int, counter) + __field(u64, xfeatures) + __field(u64, xcomp_bv) + ), + + TP_fast_assign( + __entry->fpu = fpu; + __entry->fpregs_active = fpu->fpregs_active; + __entry->fpstate_active = fpu->fpstate_active; + __entry->counter = fpu->counter; + if (boot_cpu_has(X86_FEATURE_OSXSAVE)) { + __entry->xfeatures = fpu->state.xsave.header.xfeatures; + __entry->xcomp_bv = fpu->state.xsave.header.xcomp_bv; + } + ), + TP_printk("x86/fpu: %p fpregs_active: %d fpstate_active: %d counter: %d xfeatures: %llx xcomp_bv: %llx", + __entry->fpu, + __entry->fpregs_active, + __entry->fpstate_active, + __entry->counter, + __entry->xfeatures, + __entry->xcomp_bv + ) +); + +DEFINE_EVENT(x86_fpu, x86_fpu_state, + TP_PROTO(struct fpu *fpu), + TP_ARGS(fpu) +); + +DEFINE_EVENT(x86_fpu, x86_fpu_before_save, + TP_PROTO(struct fpu *fpu), + TP_ARGS(fpu) +); + +DEFINE_EVENT(x86_fpu, x86_fpu_after_save, + TP_PROTO(struct fpu *fpu), + TP_ARGS(fpu) +); + +DEFINE_EVENT(x86_fpu, x86_fpu_before_restore, + TP_PROTO(struct fpu *fpu), + TP_ARGS(fpu) +); + +DEFINE_EVENT(x86_fpu, x86_fpu_after_restore, + TP_PROTO(struct fpu *fpu), + TP_ARGS(fpu) +); + +DEFINE_EVENT(x86_fpu, x86_fpu_regs_activated, + TP_PROTO(struct fpu *fpu), + TP_ARGS(fpu) +); + +DEFINE_EVENT(x86_fpu, x86_fpu_regs_deactivated, + TP_PROTO(struct fpu *fpu), + TP_ARGS(fpu) +); + +DEFINE_EVENT(x86_fpu, x86_fpu_activate_state, + TP_PROTO(struct fpu *fpu), + TP_ARGS(fpu) +); + +DEFINE_EVENT(x86_fpu, x86_fpu_deactivate_state, + TP_PROTO(struct fpu *fpu), + TP_ARGS(fpu) +); + +DEFINE_EVENT(x86_fpu, x86_fpu_init_state, + TP_PROTO(struct fpu *fpu), + TP_ARGS(fpu) +); + +DEFINE_EVENT(x86_fpu, x86_fpu_dropped, + TP_PROTO(struct fpu *fpu), + TP_ARGS(fpu) +); + +DEFINE_EVENT(x86_fpu, x86_fpu_copy_src, + TP_PROTO(struct fpu *fpu), + TP_ARGS(fpu) +); + +DEFINE_EVENT(x86_fpu, x86_fpu_copy_dst, + TP_PROTO(struct fpu *fpu), + TP_ARGS(fpu) +); + +DEFINE_EVENT(x86_fpu, x86_fpu_xstate_check_failed, + TP_PROTO(struct fpu *fpu), + TP_ARGS(fpu) +); + +#undef TRACE_INCLUDE_PATH +#define TRACE_INCLUDE_PATH asm/trace/ +#undef TRACE_INCLUDE_FILE +#define TRACE_INCLUDE_FILE fpu +#endif /* _TRACE_FPU_H */ + +/* This part must be outside protection */ +#include <trace/define_trace.h> |