From 5b7c4cabbb65f5c469464da6c5f614cbd7f730f2 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Tue, 21 Feb 2023 18:24:12 -0800 Subject: Merge tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next Pull networking updates from Jakub Kicinski: "Core: - Add dedicated kmem_cache for typical/small skb->head, avoid having to access struct page at kfree time, and improve memory use. - Introduce sysctl to set default RPS configuration for new netdevs. - Define Netlink protocol specification format which can be used to describe messages used by each family and auto-generate parsers. Add tools for generating kernel data structures and uAPI headers. - Expose all net/core sysctls inside netns. - Remove 4s sleep in netpoll if carrier is instantly detected on boot. - Add configurable limit of MDB entries per port, and port-vlan. - Continue populating drop reasons throughout the stack. - Retire a handful of legacy Qdiscs and classifiers. Protocols: - Support IPv4 big TCP (TSO frames larger than 64kB). - Add IP_LOCAL_PORT_RANGE socket option, to control local port range on socket by socket basis. - Track and report in procfs number of MPTCP sockets used. - Support mixing IPv4 and IPv6 flows in the in-kernel MPTCP path manager. - IPv6: don't check net.ipv6.route.max_size and rely on garbage collection to free memory (similarly to IPv4). - Support Penultimate Segment Pop (PSP) flavor in SRv6 (RFC8986). - ICMP: add per-rate limit counters. - Add support for user scanning requests in ieee802154. - Remove static WEP support. - Support minimal Wi-Fi 7 Extremely High Throughput (EHT) rate reporting. - WiFi 7 EHT channel puncturing support (client & AP). BPF: - Add a rbtree data structure following the "next-gen data structure" precedent set by recently added linked list, that is, by using kfunc + kptr instead of adding a new BPF map type. - Expose XDP hints via kfuncs with initial support for RX hash and timestamp metadata. - Add BPF_F_NO_TUNNEL_KEY extension to bpf_skb_set_tunnel_key to better support decap on GRE tunnel devices not operating in collect metadata. - Improve x86 JIT's codegen for PROBE_MEM runtime error checks. - Remove the need for trace_printk_lock for bpf_trace_printk and bpf_trace_vprintk helpers. - Extend libbpf's bpf_tracing.h support for tracing arguments of kprobes/uprobes and syscall as a special case. - Significantly reduce the search time for module symbols by livepatch and BPF. - Enable cpumasks to be used as kptrs, which is useful for tracing programs tracking which tasks end up running on which CPUs in different time intervals. - Add support for BPF trampoline on s390x and riscv64. - Add capability to export the XDP features supported by the NIC. - Add __bpf_kfunc tag for marking kernel functions as kfuncs. - Add cgroup.memory=nobpf kernel parameter option to disable BPF memory accounting for container environments. Netfilter: - Remove the CLUSTERIP target. It has been marked as obsolete for years, and we still have WARN splats wrt races of the out-of-band /proc interface installed by this target. - Add 'destroy' commands to nf_tables. They are identical to the existing 'delete' commands, but do not return an error if the referenced object (set, chain, rule...) did not exist. Driver API: - Improve cpumask_local_spread() locality to help NICs set the right IRQ affinity on AMD platforms. - Separate C22 and C45 MDIO bus transactions more clearly. - Introduce new DCB table to control DSCP rewrite on egress. - Support configuration of Physical Layer Collision Avoidance (PLCA) Reconciliation Sublayer (RS) (802.3cg-2019). Modern version of shared medium Ethernet. - Support for MAC Merge layer (IEEE 802.3-2018 clause 99). Allowing preemption of low priority frames by high priority frames. - Add support for controlling MACSec offload using netlink SET. - Rework devlink instance refcounts to allow registration and de-registration under the instance lock. Split the code into multiple files, drop some of the unnecessarily granular locks and factor out common parts of netlink operation handling. - Add TX frame aggregation parameters (for USB drivers). - Add a new attr TCA_EXT_WARN_MSG to report TC (offload) warning messages with notifications for debug. - Allow offloading of UDP NEW connections via act_ct. - Add support for per action HW stats in TC. - Support hardware miss to TC action (continue processing in SW from a specific point in the action chain). - Warn if old Wireless Extension user space interface is used with modern cfg80211/mac80211 drivers. Do not support Wireless Extensions for Wi-Fi 7 devices at all. Everyone should switch to using nl80211 interface instead. - Improve the CAN bit timing configuration. Use extack to return error messages directly to user space, update the SJW handling, including the definition of a new default value that will benefit CAN-FD controllers, by increasing their oscillator tolerance. New hardware / drivers: - Ethernet: - nVidia BlueField-3 support (control traffic driver) - Ethernet support for imx93 SoCs - Motorcomm yt8531 gigabit Ethernet PHY - onsemi NCN26000 10BASE-T1S PHY (with support for PLCA) - Microchip LAN8841 PHY (incl. cable diagnostics and PTP) - Amlogic gxl MDIO mux - WiFi: - RealTek RTL8188EU (rtl8xxxu) - Qualcomm Wi-Fi 7 devices (ath12k) - CAN: - Renesas R-Car V4H Drivers: - Bluetooth: - Set Per Platform Antenna Gain (PPAG) for Intel controllers. - Ethernet NICs: - Intel (1G, igc): - support TSN / Qbv / packet scheduling features of i226 model - Intel (100G, ice): - use GNSS subsystem instead of TTY - multi-buffer XDP support - extend support for GPIO pins to E823 devices - nVidia/Mellanox: - update the shared buffer configuration on PFC commands - implement PTP adjphase function for HW offset control - TC support for Geneve and GRE with VF tunnel offload - more efficient crypto key management method - multi-port eswitch support - Netronome/Corigine: - add DCB IEEE support - support IPsec offloading for NFP3800 - Freescale/NXP (enetc): - support XDP_REDIRECT for XDP non-linear buffers - improve reconfig, avoid link flap and waiting for idle - support MAC Merge layer - Other NICs: - sfc/ef100: add basic devlink support for ef100 - ionic: rx_push mode operation (writing descriptors via MMIO) - bnxt: use the auxiliary bus abstraction for RDMA - r8169: disable ASPM and reset bus in case of tx timeout - cpsw: support QSGMII mode for J721e CPSW9G - cpts: support pulse-per-second output - ngbe: add an mdio bus driver - usbnet: optimize usbnet_bh() by avoiding unnecessary queuing - r8152: handle devices with FW with NCM support - amd-xgbe: support 10Mbps, 2.5GbE speeds and rx-adaptation - virtio-net: support multi buffer XDP - virtio/vsock: replace virtio_vsock_pkt with sk_buff - tsnep: XDP support - Ethernet high-speed switches: - nVidia/Mellanox (mlxsw): - add support for latency TLV (in FW control messages) - Microchip (sparx5): - separate explicit and implicit traffic forwarding rules, make the implicit rules always active - add support for egress DSCP rewrite - IS0 VCAP support (Ingress Classification) - IS2 VCAP filters (protos, L3 addrs, L4 ports, flags, ToS etc.) - ES2 VCAP support (Egress Access Control) - support for Per-Stream Filtering and Policing (802.1Q, 8.6.5.1) - Ethernet embedded switches: - Marvell (mv88e6xxx): - add MAB (port auth) offload support - enable PTP receive for mv88e6390 - NXP (ocelot): - support MAC Merge layer - support for the the vsc7512 internal copper phys - Microchip: - lan9303: convert to PHYLINK - lan966x: support TC flower filter statistics - lan937x: PTP support for KSZ9563/KSZ8563 and LAN937x - lan937x: support Credit Based Shaper configuration - ksz9477: support Energy Efficient Ethernet - other: - qca8k: convert to regmap read/write API, use bulk operations - rswitch: Improve TX timestamp accuracy - Intel WiFi (iwlwifi): - EHT (Wi-Fi 7) rate reporting - STEP equalizer support: transfer some STEP (connection to radio on platforms with integrated wifi) related parameters from the BIOS to the firmware. - Qualcomm 802.11ax WiFi (ath11k): - IPQ5018 support - Fine Timing Measurement (FTM) responder role support - channel 177 support - MediaTek WiFi (mt76): - per-PHY LED support - mt7996: EHT (Wi-Fi 7) support - Wireless Ethernet Dispatch (WED) reset support - switch to using page pool allocator - RealTek WiFi (rtw89): - support new version of Bluetooth co-existance - Mobile: - rmnet: support TX aggregation" * tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1872 commits) page_pool: add a comment explaining the fragment counter usage net: ethtool: fix __ethtool_dev_mm_supported() implementation ethtool: pse-pd: Fix double word in comments xsk: add linux/vmalloc.h to xsk.c sefltests: netdevsim: wait for devlink instance after netns removal selftest: fib_tests: Always cleanup before exit net/mlx5e: Align IPsec ASO result memory to be as required by hardware net/mlx5e: TC, Set CT miss to the specific ct action instance net/mlx5e: Rename CHAIN_TO_REG to MAPPED_OBJ_TO_REG net/mlx5: Refactor tc miss handling to a single function net/mlx5: Kconfig: Make tc offload depend on tc skb extension net/sched: flower: Support hardware miss to tc action net/sched: flower: Move filter handle initialization earlier net/sched: cls_api: Support hardware miss to tc action net/sched: Rename user cookie and act cookie sfc: fix builds without CONFIG_RTC_LIB sfc: clean up some inconsistent indentings net/mlx4_en: Introduce flexible array to silence overflow warning net: lan966x: Fix possible deadlock inside PTP net/ulp: Remove redundant ->clone() test in inet_clone_ulp(). ... --- tools/perf/util/evlist.h | 445 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 445 insertions(+) create mode 100644 tools/perf/util/evlist.h (limited to 'tools/perf/util/evlist.h') diff --git a/tools/perf/util/evlist.h b/tools/perf/util/evlist.h new file mode 100644 index 000000000..01fa9d592 --- /dev/null +++ b/tools/perf/util/evlist.h @@ -0,0 +1,445 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef __PERF_EVLIST_H +#define __PERF_EVLIST_H 1 + +#include +#include +#include +#include +#include +#include +#include +#include "events_stats.h" +#include "evsel.h" +#include +#include +#include + +struct pollfd; +struct thread_map; +struct perf_cpu_map; +struct record_opts; + +/* + * State machine of bkw_mmap_state: + * + * .________________(forbid)_____________. + * | V + * NOTREADY --(0)--> RUNNING --(1)--> DATA_PENDING --(2)--> EMPTY + * ^ ^ | ^ | + * | |__(forbid)____/ |___(forbid)___/| + * | | + * \_________________(3)_______________/ + * + * NOTREADY : Backward ring buffers are not ready + * RUNNING : Backward ring buffers are recording + * DATA_PENDING : We are required to collect data from backward ring buffers + * EMPTY : We have collected data from backward ring buffers. + * + * (0): Setup backward ring buffer + * (1): Pause ring buffers for reading + * (2): Read from ring buffers + * (3): Resume ring buffers for recording + */ +enum bkw_mmap_state { + BKW_MMAP_NOTREADY, + BKW_MMAP_RUNNING, + BKW_MMAP_DATA_PENDING, + BKW_MMAP_EMPTY, +}; + +struct event_enable_timer; + +struct evlist { + struct perf_evlist core; + bool enabled; + int id_pos; + int is_pos; + u64 combined_sample_type; + enum bkw_mmap_state bkw_mmap_state; + struct { + int cork_fd; + pid_t pid; + } workload; + struct mmap *mmap; + struct mmap *overwrite_mmap; + struct evsel *selected; + struct events_stats stats; + struct perf_env *env; + const char *hybrid_pmu_name; + void (*trace_event_sample_raw)(struct evlist *evlist, + union perf_event *event, + struct perf_sample *sample); + u64 first_sample_time; + u64 last_sample_time; + struct { + pthread_t th; + volatile int done; + } thread; + struct { + int fd; /* control file descriptor */ + int ack; /* ack file descriptor for control commands */ + int pos; /* index at evlist core object to check signals */ + } ctl_fd; + struct event_enable_timer *eet; +}; + +struct evsel_str_handler { + const char *name; + void *handler; +}; + +struct evlist *evlist__new(void); +struct evlist *evlist__new_default(void); +struct evlist *evlist__new_dummy(void); +void evlist__init(struct evlist *evlist, struct perf_cpu_map *cpus, + struct perf_thread_map *threads); +void evlist__exit(struct evlist *evlist); +void evlist__delete(struct evlist *evlist); + +void evlist__add(struct evlist *evlist, struct evsel *entry); +void evlist__remove(struct evlist *evlist, struct evsel *evsel); + +int __evlist__add_default(struct evlist *evlist, bool precise); + +static inline int evlist__add_default(struct evlist *evlist) +{ + return __evlist__add_default(evlist, true); +} + +int evlist__add_attrs(struct evlist *evlist, struct perf_event_attr *attrs, size_t nr_attrs); + +int __evlist__add_default_attrs(struct evlist *evlist, + struct perf_event_attr *attrs, size_t nr_attrs); + +int arch_evlist__add_default_attrs(struct evlist *evlist, + struct perf_event_attr *attrs, + size_t nr_attrs); + +#define evlist__add_default_attrs(evlist, array) \ + arch_evlist__add_default_attrs(evlist, array, ARRAY_SIZE(array)) + +struct evsel *arch_evlist__leader(struct list_head *list); + +int evlist__add_dummy(struct evlist *evlist); +struct evsel *evlist__add_aux_dummy(struct evlist *evlist, bool system_wide); +static inline struct evsel *evlist__add_dummy_on_all_cpus(struct evlist *evlist) +{ + return evlist__add_aux_dummy(evlist, true); +} +#ifdef HAVE_LIBTRACEEVENT +struct evsel *evlist__add_sched_switch(struct evlist *evlist, bool system_wide); +#endif + +int evlist__add_sb_event(struct evlist *evlist, struct perf_event_attr *attr, + evsel__sb_cb_t cb, void *data); +void evlist__set_cb(struct evlist *evlist, evsel__sb_cb_t cb, void *data); +int evlist__start_sb_thread(struct evlist *evlist, struct target *target); +void evlist__stop_sb_thread(struct evlist *evlist); + +#ifdef HAVE_LIBTRACEEVENT +int evlist__add_newtp(struct evlist *evlist, const char *sys, const char *name, void *handler); +#endif + +int __evlist__set_tracepoints_handlers(struct evlist *evlist, + const struct evsel_str_handler *assocs, + size_t nr_assocs); + +#define evlist__set_tracepoints_handlers(evlist, array) \ + __evlist__set_tracepoints_handlers(evlist, array, ARRAY_SIZE(array)) + +int evlist__set_tp_filter(struct evlist *evlist, const char *filter); +int evlist__set_tp_filter_pid(struct evlist *evlist, pid_t pid); +int evlist__set_tp_filter_pids(struct evlist *evlist, size_t npids, pid_t *pids); + +int evlist__append_tp_filter(struct evlist *evlist, const char *filter); + +int evlist__append_tp_filter_pid(struct evlist *evlist, pid_t pid); +int evlist__append_tp_filter_pids(struct evlist *evlist, size_t npids, pid_t *pids); + +struct evsel *evlist__find_tracepoint_by_id(struct evlist *evlist, int id); +struct evsel *evlist__find_tracepoint_by_name(struct evlist *evlist, const char *name); + +int evlist__add_pollfd(struct evlist *evlist, int fd); +int evlist__filter_pollfd(struct evlist *evlist, short revents_and_mask); + +#ifdef HAVE_EVENTFD_SUPPORT +int evlist__add_wakeup_eventfd(struct evlist *evlist, int fd); +#endif + +int evlist__poll(struct evlist *evlist, int timeout); + +struct evsel *evlist__id2evsel(struct evlist *evlist, u64 id); +struct evsel *evlist__id2evsel_strict(struct evlist *evlist, u64 id); + +struct perf_sample_id *evlist__id2sid(struct evlist *evlist, u64 id); + +void evlist__toggle_bkw_mmap(struct evlist *evlist, enum bkw_mmap_state state); + +void evlist__mmap_consume(struct evlist *evlist, int idx); + +int evlist__open(struct evlist *evlist); +void evlist__close(struct evlist *evlist); + +struct callchain_param; + +void evlist__set_id_pos(struct evlist *evlist); +void evlist__config(struct evlist *evlist, struct record_opts *opts, struct callchain_param *callchain); +int record_opts__config(struct record_opts *opts); + +int evlist__prepare_workload(struct evlist *evlist, struct target *target, + const char *argv[], bool pipe_output, + void (*exec_error)(int signo, siginfo_t *info, void *ucontext)); +int evlist__start_workload(struct evlist *evlist); + +struct option; + +int __evlist__parse_mmap_pages(unsigned int *mmap_pages, const char *str); +int evlist__parse_mmap_pages(const struct option *opt, const char *str, int unset); + +unsigned long perf_event_mlock_kb_in_pages(void); + +int evlist__mmap_ex(struct evlist *evlist, unsigned int pages, + unsigned int auxtrace_pages, + bool auxtrace_overwrite, int nr_cblocks, + int affinity, int flush, int comp_level); +int evlist__mmap(struct evlist *evlist, unsigned int pages); +void evlist__munmap(struct evlist *evlist); + +size_t evlist__mmap_size(unsigned long pages); + +void evlist__disable(struct evlist *evlist); +void evlist__enable(struct evlist *evlist); +void evlist__toggle_enable(struct evlist *evlist); +void evlist__disable_evsel(struct evlist *evlist, char *evsel_name); +void evlist__enable_evsel(struct evlist *evlist, char *evsel_name); +void evlist__disable_non_dummy(struct evlist *evlist); +void evlist__enable_non_dummy(struct evlist *evlist); + +void evlist__set_selected(struct evlist *evlist, struct evsel *evsel); + +int evlist__create_maps(struct evlist *evlist, struct target *target); +int evlist__apply_filters(struct evlist *evlist, struct evsel **err_evsel); + +u64 __evlist__combined_sample_type(struct evlist *evlist); +u64 evlist__combined_sample_type(struct evlist *evlist); +u64 evlist__combined_branch_type(struct evlist *evlist); +bool evlist__sample_id_all(struct evlist *evlist); +u16 evlist__id_hdr_size(struct evlist *evlist); + +int evlist__parse_sample(struct evlist *evlist, union perf_event *event, struct perf_sample *sample); +int evlist__parse_sample_timestamp(struct evlist *evlist, union perf_event *event, u64 *timestamp); + +bool evlist__valid_sample_type(struct evlist *evlist); +bool evlist__valid_sample_id_all(struct evlist *evlist); +bool evlist__valid_read_format(struct evlist *evlist); + +void evlist__splice_list_tail(struct evlist *evlist, struct list_head *list); + +static inline bool evlist__empty(struct evlist *evlist) +{ + return list_empty(&evlist->core.entries); +} + +static inline struct evsel *evlist__first(struct evlist *evlist) +{ + struct perf_evsel *evsel = perf_evlist__first(&evlist->core); + + return container_of(evsel, struct evsel, core); +} + +static inline struct evsel *evlist__last(struct evlist *evlist) +{ + struct perf_evsel *evsel = perf_evlist__last(&evlist->core); + + return container_of(evsel, struct evsel, core); +} + +int evlist__strerror_open(struct evlist *evlist, int err, char *buf, size_t size); +int evlist__strerror_mmap(struct evlist *evlist, int err, char *buf, size_t size); + +bool evlist__can_select_event(struct evlist *evlist, const char *str); +void evlist__to_front(struct evlist *evlist, struct evsel *move_evsel); + +/** + * __evlist__for_each_entry - iterate thru all the evsels + * @list: list_head instance to iterate + * @evsel: struct evsel iterator + */ +#define __evlist__for_each_entry(list, evsel) \ + list_for_each_entry(evsel, list, core.node) + +/** + * evlist__for_each_entry - iterate thru all the evsels + * @evlist: evlist instance to iterate + * @evsel: struct evsel iterator + */ +#define evlist__for_each_entry(evlist, evsel) \ + __evlist__for_each_entry(&(evlist)->core.entries, evsel) + +/** + * __evlist__for_each_entry_continue - continue iteration thru all the evsels + * @list: list_head instance to iterate + * @evsel: struct evsel iterator + */ +#define __evlist__for_each_entry_continue(list, evsel) \ + list_for_each_entry_continue(evsel, list, core.node) + +/** + * evlist__for_each_entry_continue - continue iteration thru all the evsels + * @evlist: evlist instance to iterate + * @evsel: struct evsel iterator + */ +#define evlist__for_each_entry_continue(evlist, evsel) \ + __evlist__for_each_entry_continue(&(evlist)->core.entries, evsel) + +/** + * __evlist__for_each_entry_from - continue iteration from @evsel (included) + * @list: list_head instance to iterate + * @evsel: struct evsel iterator + */ +#define __evlist__for_each_entry_from(list, evsel) \ + list_for_each_entry_from(evsel, list, core.node) + +/** + * evlist__for_each_entry_from - continue iteration from @evsel (included) + * @evlist: evlist instance to iterate + * @evsel: struct evsel iterator + */ +#define evlist__for_each_entry_from(evlist, evsel) \ + __evlist__for_each_entry_from(&(evlist)->core.entries, evsel) + +/** + * __evlist__for_each_entry_reverse - iterate thru all the evsels in reverse order + * @list: list_head instance to iterate + * @evsel: struct evsel iterator + */ +#define __evlist__for_each_entry_reverse(list, evsel) \ + list_for_each_entry_reverse(evsel, list, core.node) + +/** + * evlist__for_each_entry_reverse - iterate thru all the evsels in reverse order + * @evlist: evlist instance to iterate + * @evsel: struct evsel iterator + */ +#define evlist__for_each_entry_reverse(evlist, evsel) \ + __evlist__for_each_entry_reverse(&(evlist)->core.entries, evsel) + +/** + * __evlist__for_each_entry_safe - safely iterate thru all the evsels + * @list: list_head instance to iterate + * @tmp: struct evsel temp iterator + * @evsel: struct evsel iterator + */ +#define __evlist__for_each_entry_safe(list, tmp, evsel) \ + list_for_each_entry_safe(evsel, tmp, list, core.node) + +/** + * evlist__for_each_entry_safe - safely iterate thru all the evsels + * @evlist: evlist instance to iterate + * @evsel: struct evsel iterator + * @tmp: struct evsel temp iterator + */ +#define evlist__for_each_entry_safe(evlist, tmp, evsel) \ + __evlist__for_each_entry_safe(&(evlist)->core.entries, tmp, evsel) + +/** Iterator state for evlist__for_each_cpu */ +struct evlist_cpu_iterator { + /** The list being iterated through. */ + struct evlist *container; + /** The current evsel of the iterator. */ + struct evsel *evsel; + /** The CPU map index corresponding to the evsel->core.cpus for the current CPU. */ + int cpu_map_idx; + /** + * The CPU map index corresponding to evlist->core.all_cpus for the + * current CPU. Distinct from cpu_map_idx as the evsel's cpu map may + * contain fewer entries. + */ + int evlist_cpu_map_idx; + /** The number of CPU map entries in evlist->core.all_cpus. */ + int evlist_cpu_map_nr; + /** The current CPU of the iterator. */ + struct perf_cpu cpu; + /** If present, used to set the affinity when switching between CPUs. */ + struct affinity *affinity; +}; + +/** + * evlist__for_each_cpu - without affinity, iterate over the evlist. With + * affinity, iterate over all CPUs and then the evlist + * for each evsel on that CPU. When switching between + * CPUs the affinity is set to the CPU to avoid IPIs + * during syscalls. + * @evlist_cpu_itr: the iterator instance. + * @evlist: evlist instance to iterate. + * @affinity: NULL or used to set the affinity to the current CPU. + */ +#define evlist__for_each_cpu(evlist_cpu_itr, evlist, affinity) \ + for ((evlist_cpu_itr) = evlist__cpu_begin(evlist, affinity); \ + !evlist_cpu_iterator__end(&evlist_cpu_itr); \ + evlist_cpu_iterator__next(&evlist_cpu_itr)) + +/** Returns an iterator set to the first CPU/evsel of evlist. */ +struct evlist_cpu_iterator evlist__cpu_begin(struct evlist *evlist, struct affinity *affinity); +/** Move to next element in iterator, updating CPU, evsel and the affinity. */ +void evlist_cpu_iterator__next(struct evlist_cpu_iterator *evlist_cpu_itr); +/** Returns true when iterator is at the end of the CPUs and evlist. */ +bool evlist_cpu_iterator__end(const struct evlist_cpu_iterator *evlist_cpu_itr); + +struct evsel *evlist__get_tracking_event(struct evlist *evlist); +void evlist__set_tracking_event(struct evlist *evlist, struct evsel *tracking_evsel); + +struct evsel *evlist__find_evsel_by_str(struct evlist *evlist, const char *str); + +struct evsel *evlist__event2evsel(struct evlist *evlist, union perf_event *event); + +bool evlist__exclude_kernel(struct evlist *evlist); + +void evlist__force_leader(struct evlist *evlist); + +struct evsel *evlist__reset_weak_group(struct evlist *evlist, struct evsel *evsel, bool close); + +#define EVLIST_CTL_CMD_ENABLE_TAG "enable" +#define EVLIST_CTL_CMD_DISABLE_TAG "disable" +#define EVLIST_CTL_CMD_ACK_TAG "ack\n" +#define EVLIST_CTL_CMD_SNAPSHOT_TAG "snapshot" +#define EVLIST_CTL_CMD_EVLIST_TAG "evlist" +#define EVLIST_CTL_CMD_STOP_TAG "stop" +#define EVLIST_CTL_CMD_PING_TAG "ping" + +#define EVLIST_CTL_CMD_MAX_LEN 64 + +enum evlist_ctl_cmd { + EVLIST_CTL_CMD_UNSUPPORTED = 0, + EVLIST_CTL_CMD_ENABLE, + EVLIST_CTL_CMD_DISABLE, + EVLIST_CTL_CMD_ACK, + EVLIST_CTL_CMD_SNAPSHOT, + EVLIST_CTL_CMD_EVLIST, + EVLIST_CTL_CMD_STOP, + EVLIST_CTL_CMD_PING, +}; + +int evlist__parse_control(const char *str, int *ctl_fd, int *ctl_fd_ack, bool *ctl_fd_close); +void evlist__close_control(int ctl_fd, int ctl_fd_ack, bool *ctl_fd_close); +int evlist__initialize_ctlfd(struct evlist *evlist, int ctl_fd, int ctl_fd_ack); +int evlist__finalize_ctlfd(struct evlist *evlist); +bool evlist__ctlfd_initialized(struct evlist *evlist); +int evlist__ctlfd_process(struct evlist *evlist, enum evlist_ctl_cmd *cmd); +int evlist__ctlfd_ack(struct evlist *evlist); + +#define EVLIST_ENABLED_MSG "Events enabled\n" +#define EVLIST_DISABLED_MSG "Events disabled\n" + +int evlist__parse_event_enable_time(struct evlist *evlist, struct record_opts *opts, + const char *str, int unset); +int event_enable_timer__start(struct event_enable_timer *eet); +void event_enable_timer__exit(struct event_enable_timer **ep); +int event_enable_timer__process(struct event_enable_timer *eet); + +struct evsel *evlist__find_evsel(struct evlist *evlist, int idx); + +int evlist__scnprintf_evsels(struct evlist *evlist, size_t size, char *bf); +void evlist__check_mem_load_aux(struct evlist *evlist); +#endif /* __PERF_EVLIST_H */ -- cgit v1.2.3