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| author | Sanjay Lal <sanjayl@kymasys.com> | 2012-11-21 18:34:07 -0800 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2013-05-08 03:55:36 +0200 |
| commit | 3c20ef526253da02348ec45768d5a90813577d88 (patch) | |
| tree | bddcc8c6f1599ff1b894a06945bf525089e5099e /arch/mips/kvm | |
| parent | 03a0331c8c715c73d877aba8c542a60b13f70ed0 (diff) | |
| download | linux-3c20ef526253da02348ec45768d5a90813577d88.tar.bz2 | |
KVM/MIPS32: COP0 accesses profiling.
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>
Diffstat (limited to 'arch/mips/kvm')
| -rw-r--r-- | arch/mips/kvm/kvm_mips_stats.c | 82 |
1 files changed, 82 insertions, 0 deletions
diff --git a/arch/mips/kvm/kvm_mips_stats.c b/arch/mips/kvm/kvm_mips_stats.c new file mode 100644 index 000000000000..075904bcac1b --- /dev/null +++ b/arch/mips/kvm/kvm_mips_stats.c @@ -0,0 +1,82 @@ +/* +* 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. +* +* KVM/MIPS: COP0 access histogram +* +* Copyright (C) 2012 MIPS Technologies, Inc. All rights reserved. +* Authors: Sanjay Lal <sanjayl@kymasys.com> +*/ + +#include <linux/kvm_host.h> + +char *kvm_mips_exit_types_str[MAX_KVM_MIPS_EXIT_TYPES] = { + "WAIT", + "CACHE", + "Signal", + "Interrupt", + "COP0/1 Unusable", + "TLB Mod", + "TLB Miss (LD)", + "TLB Miss (ST)", + "Address Err (ST)", + "Address Error (LD)", + "System Call", + "Reserved Inst", + "Break Inst", + "D-Cache Flushes", +}; + +char *kvm_cop0_str[N_MIPS_COPROC_REGS] = { + "Index", + "Random", + "EntryLo0", + "EntryLo1", + "Context", + "PG Mask", + "Wired", + "HWREna", + "BadVAddr", + "Count", + "EntryHI", + "Compare", + "Status", + "Cause", + "EXC PC", + "PRID", + "Config", + "LLAddr", + "Watch Lo", + "Watch Hi", + "X Context", + "Reserved", + "Impl Dep", + "Debug", + "DEPC", + "PerfCnt", + "ErrCtl", + "CacheErr", + "TagLo", + "TagHi", + "ErrorEPC", + "DESAVE" +}; + +int kvm_mips_dump_stats(struct kvm_vcpu *vcpu) +{ +#ifdef CONFIG_KVM_MIPS_DEBUG_COP0_COUNTERS + int i, j; + + printk("\nKVM VCPU[%d] COP0 Access Profile:\n", vcpu->vcpu_id); + for (i = 0; i < N_MIPS_COPROC_REGS; i++) { + for (j = 0; j < N_MIPS_COPROC_SEL; j++) { + if (vcpu->arch.cop0->stat[i][j]) + printk("%s[%d]: %lu\n", kvm_cop0_str[i], j, + vcpu->arch.cop0->stat[i][j]); + } + } +#endif + + return 0; +} |