04ebebf45a
Add a MIPS specific trace event for auxiliary context operations
(notably FPU and MSA). Unfortunately the generic kvm_fpu trace event
isn't flexible enough to handle the range of interesting things that can
happen with FPU and MSA context.
The type of state being operated on is traced:
- FPU: Just the FPU registers.
- MSA: Just the upper half of the MSA vector registers (low half already
loaded with FPU state).
- FPU & MSA: Full MSA vector state (includes FPU state).
As is the type of operation:
- Restore: State was enabled and restored.
- Save: State was saved and disabled.
- Enable: State was enabled (already loaded).
- Disable: State was disabled (kept loaded).
- Discard: State was discarded and disabled.
Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Radim Krčmář <rkrcmar@redhat.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: linux-mips@linux-mips.org
Cc: kvm@vger.kernel.org
[Fix remaining occurrence of "fpu_msa", change to "aux". - Paolo]
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
91 lines
2.3 KiB
C
91 lines
2.3 KiB
C
/*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file "COPYING" in the main directory of this archive
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* for more details.
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*
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* Copyright (C) 2012 MIPS Technologies, Inc. All rights reserved.
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* Authors: Sanjay Lal <sanjayl@kymasys.com>
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*/
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#if !defined(_TRACE_KVM_H) || defined(TRACE_HEADER_MULTI_READ)
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#define _TRACE_KVM_H
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#include <linux/tracepoint.h>
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#undef TRACE_SYSTEM
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#define TRACE_SYSTEM kvm
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#define TRACE_INCLUDE_PATH .
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#define TRACE_INCLUDE_FILE trace
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/* Tracepoints for VM eists */
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extern char *kvm_mips_exit_types_str[MAX_KVM_MIPS_EXIT_TYPES];
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TRACE_EVENT(kvm_exit,
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TP_PROTO(struct kvm_vcpu *vcpu, unsigned int reason),
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TP_ARGS(vcpu, reason),
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TP_STRUCT__entry(
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__field(unsigned long, pc)
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__field(unsigned int, reason)
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),
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TP_fast_assign(
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__entry->pc = vcpu->arch.pc;
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__entry->reason = reason;
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),
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TP_printk("[%s]PC: 0x%08lx",
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kvm_mips_exit_types_str[__entry->reason],
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__entry->pc)
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);
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#define KVM_TRACE_AUX_RESTORE 0
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#define KVM_TRACE_AUX_SAVE 1
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#define KVM_TRACE_AUX_ENABLE 2
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#define KVM_TRACE_AUX_DISABLE 3
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#define KVM_TRACE_AUX_DISCARD 4
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#define KVM_TRACE_AUX_FPU 1
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#define KVM_TRACE_AUX_MSA 2
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#define KVM_TRACE_AUX_FPU_MSA 3
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#define kvm_trace_symbol_aux_op \
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{ KVM_TRACE_AUX_RESTORE, "restore" }, \
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{ KVM_TRACE_AUX_SAVE, "save" }, \
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{ KVM_TRACE_AUX_ENABLE, "enable" }, \
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{ KVM_TRACE_AUX_DISABLE, "disable" }, \
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{ KVM_TRACE_AUX_DISCARD, "discard" }
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#define kvm_trace_symbol_aux_state \
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{ KVM_TRACE_AUX_FPU, "FPU" }, \
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{ KVM_TRACE_AUX_MSA, "MSA" }, \
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{ KVM_TRACE_AUX_FPU_MSA, "FPU & MSA" }
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TRACE_EVENT(kvm_aux,
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TP_PROTO(struct kvm_vcpu *vcpu, unsigned int op,
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unsigned int state),
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TP_ARGS(vcpu, op, state),
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TP_STRUCT__entry(
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__field(unsigned long, pc)
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__field(u8, op)
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__field(u8, state)
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),
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TP_fast_assign(
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__entry->pc = vcpu->arch.pc;
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__entry->op = op;
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__entry->state = state;
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),
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TP_printk("%s %s PC: 0x%08lx",
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__print_symbolic(__entry->op,
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kvm_trace_symbol_aux_op),
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__print_symbolic(__entry->state,
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kvm_trace_symbol_aux_state),
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__entry->pc)
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);
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#endif /* _TRACE_KVM_H */
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/* This part must be outside protection */
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#include <trace/define_trace.h>
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