litmus-rt.git - The LITMUS^RT kernel.

index : litmus-rt.git

The LITMUS^RT kernel.

Bjoern Brandenburg

about summary refs log tree commit diff stats

path: root/tools/perf/scripts/python/net_dropmonitor.py

diff options

author	Paolo Bonzini <pbonzini@redhat.com>	2014-02-21 04:32:27 -0500
committer	Paolo Bonzini <pbonzini@redhat.com>	2014-03-11 05:46:04 -0400
commit	facb0139698923dc7b7d15cafbb319219969f4fd (patch)
tree	d2f4e83b00ecfc8d744c8f8af5510bca5a8185cc /tools/perf/scripts/python/net_dropmonitor.py
parent	5315c716b69f47e1751d09e16c7bd5b559419531 (diff)

KVM: svm: Allow the guest to run with dirty debug registers

When not running in guest-debug mode (i.e. the guest controls the debug registers, having to take an exit for each DR access is a waste of time. If the guest gets into a state where each context switch causes DR to be saved and restored, this can take away as much as 40% of the execution time from the guest. If the guest is running with vcpu->arch.db == vcpu->arch.eff_db, we can let it write freely to the debug registers and reload them on the next exit. We still need to exit on the first access, so that the KVM_DEBUGREG_WONT_EXIT flag is set in switch_db_regs; after that, further accesses to the debug registers will not cause a vmexit. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

Diffstat (limited to 'tools/perf/scripts/python/net_dropmonitor.py')

0 files changed, 0 insertions, 0 deletions

RD_HWX25 272 /* Boards with X.25 in firmware */ #define ARPHRD_CAN 280 /* Controller Area Network */ #define ARPHRD_PPP 512 #define ARPHRD_CISCO 513 /* Cisco HDLC */ #define ARPHRD_HDLC ARPHRD_CISCO #define ARPHRD_LAPB 516 /* LAPB */ #define ARPHRD_DDCMP 517 /* Digital's DDCMP protocol */ #define ARPHRD_RAWHDLC 518 /* Raw HDLC */ #define ARPHRD_TUNNEL 768 /* IPIP tunnel */ #define ARPHRD_TUNNEL6 769 /* IP6IP6 tunnel */ #define ARPHRD_FRAD 770 /* Frame Relay Access Device */ #define ARPHRD_SKIP 771 /* SKIP vif */ #define ARPHRD_LOOPBACK 772 /* Loopback device */ #define ARPHRD_LOCALTLK 773 /* Localtalk device */ #define ARPHRD_FDDI 774 /* Fiber Distributed Data Interface */ #define ARPHRD_BIF 775 /* AP1000 BIF */ #define ARPHRD_SIT 776 /* sit0 device - IPv6-in-IPv4 */ #define ARPHRD_IPDDP 777 /* IP over DDP tunneller */ #define ARPHRD_IPGRE 778 /* GRE over IP */ #define ARPHRD_PIMREG 779 /* PIMSM register interface */ #define ARPHRD_HIPPI 780 /* High Performance Parallel Interface */ #define ARPHRD_ASH 781 /* Nexus 64Mbps Ash */ #define ARPHRD_ECONET 782 /* Acorn Econet */ #define ARPHRD_IRDA 783 /* Linux-IrDA */ /* ARP works differently on different FC media .. so */ #define ARPHRD_FCPP 784 /* Point to point fibrechannel */ #define ARPHRD_FCAL 785 /* Fibrechannel arbitrated loop */ #define ARPHRD_FCPL 786 /* Fibrechannel public loop */ #define ARPHRD_FCFABRIC 787 /* Fibrechannel fabric */ /* 787->799 reserved for fibrechannel media types */ #define ARPHRD_IEEE802_TR 800 /* Magic type ident for TR */ #define ARPHRD_IEEE80211 801 /* IEEE 802.11 */ #define ARPHRD_IEEE80211_PRISM 802 /* IEEE 802.11 + Prism2 header */ #define ARPHRD_IEEE80211_RADIOTAP 803 /* IEEE 802.11 + radiotap header */ #define ARPHRD_PHONET 820 /* PhoNet media type */ #define ARPHRD_PHONET_PIPE 821 /* PhoNet pipe header */ #define ARPHRD_VOID 0xFFFF /* Void type, nothing is known */ #define ARPHRD_NONE 0xFFFE /* zero header length */ /* ARP protocol opcodes. */ #define ARPOP_REQUEST 1 /* ARP request */ #define ARPOP_REPLY 2 /* ARP reply */ #define ARPOP_RREQUEST 3 /* RARP request */ #define ARPOP_RREPLY 4 /* RARP reply */ #define ARPOP_InREQUEST 8 /* InARP request */ #define ARPOP_InREPLY 9 /* InARP reply */ #define ARPOP_NAK 10 /* (ATM)ARP NAK */ /* ARP ioctl request. */ struct arpreq { struct sockaddr arp_pa; /* protocol address */ struct sockaddr arp_ha; /* hardware address */ int arp_flags; /* flags */ struct sockaddr arp_netmask; /* netmask (only for proxy arps) */ char arp_dev[16]; }; struct arpreq_old { struct sockaddr arp_pa; /* protocol address */ struct sockaddr arp_ha; /* hardware address */ int arp_flags; /* flags */ struct sockaddr arp_netmask; /* netmask (only for proxy arps) */ }; /* ARP Flag values. */ #define ATF_COM 0x02 /* completed entry (ha valid) */ #define ATF_PERM 0x04 /* permanent entry */ #define ATF_PUBL 0x08 /* publish entry */ #define ATF_USETRAILERS 0x10 /* has requested trailers */ #define ATF_NETMASK 0x20 /* want to use a netmask (only for proxy entries) */ #define ATF_DONTPUB 0x40 /* don't answer this addresses */ /* * This structure defines an ethernet arp header. */ struct arphdr { __be16 ar_hrd; /* format of hardware address */ __be16 ar_pro; /* format of protocol address */ unsigned char ar_hln; /* length of hardware address */ unsigned char ar_pln; /* length of protocol address */ __be16 ar_op; /* ARP opcode (command) */ #if 0 /* * Ethernet looks like this : This bit is variable sized however... */ unsigned char ar_sha[ETH_ALEN]; /* sender hardware address */ unsigned char ar_sip[4]; /* sender IP address */ unsigned char ar_tha[ETH_ALEN]; /* target hardware address */ unsigned char ar_tip[4]; /* target IP address */ #endif }; #ifdef __KERNEL__ #include <linux/skbuff.h> static inline struct arphdr *arp_hdr(const struct sk_buff *skb) { return (struct arphdr *)skb_network_header(skb); } static inline int arp_hdr_len(struct net_device *dev) { /* ARP header, plus 2 device addresses, plus 2 IP addresses. */ return sizeof(struct arphdr) + (dev->addr_len + sizeof(u32)) * 2; } #endif #endif /* _LINUX_IF_ARP_H */