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linux/arch/mips/kvm/trace.h

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KVM/MIPS32: MIPS arch specific APIs for KVM - Implements the arch specific APIs for KVM, some are stubs for MIPS - kvm_mips_handle_exit(): Main 'C' distpatch routine for handling exceptions while in "Guest" mode. - Also implements in-kernel timer interrupt support for the guest. Signed-off-by: Sanjay Lal <sanjayl@kymasys.com> Cc: kvm@vger.kernel.org Cc: linux-mips@linux-mips.org Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2012-11-22 10:34:02 +08:00
/*
MIPS: KVM: Reformat code and comments No logic changes inside. Signed-off-by: Deng-Cheng Zhu <dengcheng.zhu@imgtec.com> Reviewed-by: James Hogan <james.hogan@imgtec.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-06-27 03:11:34 +08:00
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* Copyright (C) 2012 MIPS Technologies, Inc. All rights reserved.
* Authors: Sanjay Lal <sanjayl@kymasys.com>
*/
KVM/MIPS32: MIPS arch specific APIs for KVM - Implements the arch specific APIs for KVM, some are stubs for MIPS - kvm_mips_handle_exit(): Main 'C' distpatch routine for handling exceptions while in "Guest" mode. - Also implements in-kernel timer interrupt support for the guest. Signed-off-by: Sanjay Lal <sanjayl@kymasys.com> Cc: kvm@vger.kernel.org Cc: linux-mips@linux-mips.org Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2012-11-22 10:34:02 +08:00
#if !defined(_TRACE_KVM_H) || defined(TRACE_HEADER_MULTI_READ)
#define _TRACE_KVM_H
#include <linux/tracepoint.h>
#undef TRACE_SYSTEM
#define TRACE_SYSTEM kvm
#define TRACE_INCLUDE_PATH .
#define TRACE_INCLUDE_FILE trace
MIPS: KVM: Reformat code and comments No logic changes inside. Signed-off-by: Deng-Cheng Zhu <dengcheng.zhu@imgtec.com> Reviewed-by: James Hogan <james.hogan@imgtec.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-06-27 03:11:34 +08:00
/* Tracepoints for VM eists */
KVM/MIPS32: MIPS arch specific APIs for KVM - Implements the arch specific APIs for KVM, some are stubs for MIPS - kvm_mips_handle_exit(): Main 'C' distpatch routine for handling exceptions while in "Guest" mode. - Also implements in-kernel timer interrupt support for the guest. Signed-off-by: Sanjay Lal <sanjayl@kymasys.com> Cc: kvm@vger.kernel.org Cc: linux-mips@linux-mips.org Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2012-11-22 10:34:02 +08:00
extern char *kvm_mips_exit_types_str[MAX_KVM_MIPS_EXIT_TYPES];
TRACE_EVENT(kvm_exit,
TP_PROTO(struct kvm_vcpu *vcpu, unsigned int reason),
TP_ARGS(vcpu, reason),
TP_STRUCT__entry(
KVM: MIPS: Fix trace event to save PC directly Currently the guest exit trace event saves the VCPU pointer to the structure, and the guest PC is retrieved by dereferencing it when the event is printed rather than directly from the trace record. This isn't safe as the printing may occur long afterwards, after the PC has changed and potentially after the VCPU has been freed. Usually this results in the same (wrong) PC being printed for multiple trace events. It also isn't portable as userland has no way to access the VCPU data structure when interpreting the trace record itself. Lets save the actual PC in the structure so that the correct value is accessible later. Fixes: 669e846e6c4e ("KVM/MIPS32: MIPS arch specific APIs for KVM") Signed-off-by: James Hogan <james.hogan@imgtec.com> Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Marcelo Tosatti <mtosatti@redhat.com> Cc: Gleb Natapov <gleb@kernel.org> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: linux-mips@linux-mips.org Cc: kvm@vger.kernel.org Cc: <stable@vger.kernel.org> # v3.10+ Acked-by: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2015-02-24 19:46:20 +08:00
__field(unsigned long, pc)
KVM/MIPS32: MIPS arch specific APIs for KVM - Implements the arch specific APIs for KVM, some are stubs for MIPS - kvm_mips_handle_exit(): Main 'C' distpatch routine for handling exceptions while in "Guest" mode. - Also implements in-kernel timer interrupt support for the guest. Signed-off-by: Sanjay Lal <sanjayl@kymasys.com> Cc: kvm@vger.kernel.org Cc: linux-mips@linux-mips.org Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2012-11-22 10:34:02 +08:00
__field(unsigned int, reason)
),
TP_fast_assign(
KVM: MIPS: Fix trace event to save PC directly Currently the guest exit trace event saves the VCPU pointer to the structure, and the guest PC is retrieved by dereferencing it when the event is printed rather than directly from the trace record. This isn't safe as the printing may occur long afterwards, after the PC has changed and potentially after the VCPU has been freed. Usually this results in the same (wrong) PC being printed for multiple trace events. It also isn't portable as userland has no way to access the VCPU data structure when interpreting the trace record itself. Lets save the actual PC in the structure so that the correct value is accessible later. Fixes: 669e846e6c4e ("KVM/MIPS32: MIPS arch specific APIs for KVM") Signed-off-by: James Hogan <james.hogan@imgtec.com> Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Marcelo Tosatti <mtosatti@redhat.com> Cc: Gleb Natapov <gleb@kernel.org> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: linux-mips@linux-mips.org Cc: kvm@vger.kernel.org Cc: <stable@vger.kernel.org> # v3.10+ Acked-by: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2015-02-24 19:46:20 +08:00
__entry->pc = vcpu->arch.pc;
KVM/MIPS32: MIPS arch specific APIs for KVM - Implements the arch specific APIs for KVM, some are stubs for MIPS - kvm_mips_handle_exit(): Main 'C' distpatch routine for handling exceptions while in "Guest" mode. - Also implements in-kernel timer interrupt support for the guest. Signed-off-by: Sanjay Lal <sanjayl@kymasys.com> Cc: kvm@vger.kernel.org Cc: linux-mips@linux-mips.org Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2012-11-22 10:34:02 +08:00
__entry->reason = reason;
),
TP_printk("[%s]PC: 0x%08lx",
kvm_mips_exit_types_str[__entry->reason],
KVM: MIPS: Fix trace event to save PC directly Currently the guest exit trace event saves the VCPU pointer to the structure, and the guest PC is retrieved by dereferencing it when the event is printed rather than directly from the trace record. This isn't safe as the printing may occur long afterwards, after the PC has changed and potentially after the VCPU has been freed. Usually this results in the same (wrong) PC being printed for multiple trace events. It also isn't portable as userland has no way to access the VCPU data structure when interpreting the trace record itself. Lets save the actual PC in the structure so that the correct value is accessible later. Fixes: 669e846e6c4e ("KVM/MIPS32: MIPS arch specific APIs for KVM") Signed-off-by: James Hogan <james.hogan@imgtec.com> Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Marcelo Tosatti <mtosatti@redhat.com> Cc: Gleb Natapov <gleb@kernel.org> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: linux-mips@linux-mips.org Cc: kvm@vger.kernel.org Cc: <stable@vger.kernel.org> # v3.10+ Acked-by: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2015-02-24 19:46:20 +08:00
__entry->pc)
KVM/MIPS32: MIPS arch specific APIs for KVM - Implements the arch specific APIs for KVM, some are stubs for MIPS - kvm_mips_handle_exit(): Main 'C' distpatch routine for handling exceptions while in "Guest" mode. - Also implements in-kernel timer interrupt support for the guest. Signed-off-by: Sanjay Lal <sanjayl@kymasys.com> Cc: kvm@vger.kernel.org Cc: linux-mips@linux-mips.org Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2012-11-22 10:34:02 +08:00
);
MIPS: KVM: Add kvm_aux trace event 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>
2016-06-14 16:40:11 +08:00
#define KVM_TRACE_AUX_RESTORE 0
#define KVM_TRACE_AUX_SAVE 1
#define KVM_TRACE_AUX_ENABLE 2
#define KVM_TRACE_AUX_DISABLE 3
#define KVM_TRACE_AUX_DISCARD 4
#define KVM_TRACE_AUX_FPU 1
#define KVM_TRACE_AUX_MSA 2
#define KVM_TRACE_AUX_FPU_MSA 3
#define kvm_trace_symbol_aux_op \
{ KVM_TRACE_AUX_RESTORE, "restore" }, \
{ KVM_TRACE_AUX_SAVE, "save" }, \
{ KVM_TRACE_AUX_ENABLE, "enable" }, \
{ KVM_TRACE_AUX_DISABLE, "disable" }, \
{ KVM_TRACE_AUX_DISCARD, "discard" }
#define kvm_trace_symbol_aux_state \
{ KVM_TRACE_AUX_FPU, "FPU" }, \
{ KVM_TRACE_AUX_MSA, "MSA" }, \
{ KVM_TRACE_AUX_FPU_MSA, "FPU & MSA" }
TRACE_EVENT(kvm_aux,
TP_PROTO(struct kvm_vcpu *vcpu, unsigned int op,
unsigned int state),
TP_ARGS(vcpu, op, state),
TP_STRUCT__entry(
__field(unsigned long, pc)
__field(u8, op)
__field(u8, state)
),
TP_fast_assign(
__entry->pc = vcpu->arch.pc;
__entry->op = op;
__entry->state = state;
),
TP_printk("%s %s PC: 0x%08lx",
__print_symbolic(__entry->op,
kvm_trace_symbol_aux_op),
__print_symbolic(__entry->state,
kvm_trace_symbol_aux_state),
__entry->pc)
);
KVM/MIPS32: MIPS arch specific APIs for KVM - Implements the arch specific APIs for KVM, some are stubs for MIPS - kvm_mips_handle_exit(): Main 'C' distpatch routine for handling exceptions while in "Guest" mode. - Also implements in-kernel timer interrupt support for the guest. Signed-off-by: Sanjay Lal <sanjayl@kymasys.com> Cc: kvm@vger.kernel.org Cc: linux-mips@linux-mips.org Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2012-11-22 10:34:02 +08:00
#endif /* _TRACE_KVM_H */
/* This part must be outside protection */
#include <trace/define_trace.h>