diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2023-08-29 11:33:01 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2023-08-29 11:33:01 -0700 |
| commit | bd6c11bc43c496cddfc6cf603b5d45365606dbd5 (patch) | |
| tree | 36318fa68f784d397111991177d65bd6325189c4 /samples | |
| parent | 68cf01760bc0891074e813b9bb06d2696cac1c01 (diff) | |
| parent | c873512ef3a39cc1a605b7a5ff2ad0a33d619aa8 (diff) | |
| download | linux-bd6c11bc43c496cddfc6cf603b5d45365606dbd5.tar.gz linux-bd6c11bc43c496cddfc6cf603b5d45365606dbd5.tar.bz2 linux-bd6c11bc43c496cddfc6cf603b5d45365606dbd5.zip | |
Merge tag 'net-next-6.6' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next
Pull networking updates from Paolo Abeni:
"Core:
- Increase size limits for to-be-sent skb frag allocations. This
allows tun, tap devices and packet sockets to better cope with
large writes operations
- Store netdevs in an xarray, to simplify iterating over netdevs
- Refactor nexthop selection for multipath routes
- Improve sched class lifetime handling
- Add backup nexthop ID support for bridge
- Implement drop reasons support in openvswitch
- Several data races annotations and fixes
- Constify the sk parameter of routing functions
- Prepend kernel version to netconsole message
Protocols:
- Implement support for TCP probing the peer being under memory
pressure
- Remove hard coded limitation on IPv6 specific info placement inside
the socket struct
- Get rid of sysctl_tcp_adv_win_scale and use an auto-estimated per
socket scaling factor
- Scaling-up the IPv6 expired route GC via a separated list of
expiring routes
- In-kernel support for the TLS alert protocol
- Better support for UDP reuseport with connected sockets
- Add NEXT-C-SID support for SRv6 End.X behavior, reducing the SR
header size
- Get rid of additional ancillary per MPTCP connection struct socket
- Implement support for BPF-based MPTCP packet schedulers
- Format MPTCP subtests selftests results in TAP
- Several new SMC 2.1 features including unique experimental options,
max connections per lgr negotiation, max links per lgr negotiation
BPF:
- Multi-buffer support in AF_XDP
- Add multi uprobe BPF links for attaching multiple uprobes and usdt
probes, which is significantly faster and saves extra fds
- Implement an fd-based tc BPF attach API (TCX) and BPF link support
on top of it
- Add SO_REUSEPORT support for TC bpf_sk_assign
- Support new instructions from cpu v4 to simplify the generated code
and feature completeness, for x86, arm64, riscv64
- Support defragmenting IPv(4|6) packets in BPF
- Teach verifier actual bounds of bpf_get_smp_processor_id() and fix
perf+libbpf issue related to custom section handling
- Introduce bpf map element count and enable it for all program types
- Add a BPF hook in sys_socket() to change the protocol ID from
IPPROTO_TCP to IPPROTO_MPTCP to cover migration for legacy
- Introduce bpf_me_mcache_free_rcu() and fix OOM under stress
- Add uprobe support for the bpf_get_func_ip helper
- Check skb ownership against full socket
- Support for up to 12 arguments in BPF trampoline
- Extend link_info for kprobe_multi and perf_event links
Netfilter:
- Speed-up process exit by aborting ruleset validation if a fatal
signal is pending
- Allow NLA_POLICY_MASK to be used with BE16/BE32 types
Driver API:
- Page pool optimizations, to improve data locality and cache usage
- Introduce ndo_hwtstamp_get() and ndo_hwtstamp_set() to avoid the
need for raw ioctl() handling in drivers
- Simplify genetlink dump operations (doit/dumpit) providing them the
common information already populated in struct genl_info
- Extend and use the yaml devlink specs to [re]generate the split ops
- Introduce devlink selective dumps, to allow SF filtering SF based
on handle and other attributes
- Add yaml netlink spec for netlink-raw families, allow route, link
and address related queries via the ynl tool
- Remove phylink legacy mode support
- Support offload LED blinking to phy
- Add devlink port function attributes for IPsec
New hardware / drivers:
- Ethernet:
- Broadcom ASP 2.0 (72165) ethernet controller
- MediaTek MT7988 SoC
- Texas Instruments AM654 SoC
- Texas Instruments IEP driver
- Atheros qca8081 phy
- Marvell 88Q2110 phy
- NXP TJA1120 phy
- WiFi:
- MediaTek mt7981 support
- Can:
- Kvaser SmartFusion2 PCI Express devices
- Allwinner T113 controllers
- Texas Instruments tcan4552/4553 chips
- Bluetooth:
- Intel Gale Peak
- Qualcomm WCN3988 and WCN7850
- NXP AW693 and IW624
- Mediatek MT2925
Drivers:
- Ethernet NICs:
- nVidia/Mellanox:
- mlx5:
- support UDP encapsulation in packet offload mode
- IPsec packet offload support in eswitch mode
- improve aRFS observability by adding new set of counters
- extends MACsec offload support to cover RoCE traffic
- dynamic completion EQs
- mlx4:
- convert to use auxiliary bus instead of custom interface
logic
- Intel
- ice:
- implement switchdev bridge offload, even for LAG
interfaces
- implement SRIOV support for LAG interfaces
- igc:
- add support for multiple in-flight TX timestamps
- Broadcom:
- bnxt:
- use the unified RX page pool buffers for XDP and non-XDP
- use the NAPI skb allocation cache
- OcteonTX2:
- support Round Robin scheduling HTB offload
- TC flower offload support for SPI field
- Freescale:
- add XDP_TX feature support
- AMD:
- ionic: add support for PCI FLR event
- sfc:
- basic conntrack offload
- introduce eth, ipv4 and ipv6 pedit offloads
- ST Microelectronics:
- stmmac: maximze PTP timestamping resolution
- Virtual NICs:
- Microsoft vNIC:
- batch ringing RX queue doorbell on receiving packets
- add page pool for RX buffers
- Virtio vNIC:
- add per queue interrupt coalescing support
- Google vNIC:
- add queue-page-list mode support
- Ethernet high-speed switches:
- nVidia/Mellanox (mlxsw):
- add port range matching tc-flower offload
- permit enslavement to netdevices with uppers
- Ethernet embedded switches:
- Marvell (mv88e6xxx):
- convert to phylink_pcs
- Renesas:
- r8A779fx: add speed change support
- rzn1: enables vlan support
- Ethernet PHYs:
- convert mv88e6xxx to phylink_pcs
- WiFi:
- Qualcomm Wi-Fi 7 (ath12k):
- extremely High Throughput (EHT) PHY support
- RealTek (rtl8xxxu):
- enable AP mode for: RTL8192FU, RTL8710BU (RTL8188GU),
RTL8192EU and RTL8723BU
- RealTek (rtw89):
- Introduce Time Averaged SAR (TAS) support
- Connector:
- support for event filtering"
* tag 'net-next-6.6' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1806 commits)
net: ethernet: mtk_wed: minor change in wed_{tx,rx}info_show
net: ethernet: mtk_wed: add some more info in wed_txinfo_show handler
net: stmmac: clarify difference between "interface" and "phy_interface"
r8152: add vendor/device ID pair for D-Link DUB-E250
devlink: move devlink_notify_register/unregister() to dev.c
devlink: move small_ops definition into netlink.c
devlink: move tracepoint definitions into core.c
devlink: push linecard related code into separate file
devlink: push rate related code into separate file
devlink: push trap related code into separate file
devlink: use tracepoint_enabled() helper
devlink: push region related code into separate file
devlink: push param related code into separate file
devlink: push resource related code into separate file
devlink: push dpipe related code into separate file
devlink: move and rename devlink_dpipe_send_and_alloc_skb() helper
devlink: push shared buffer related code into separate file
devlink: push port related code into separate file
devlink: push object register/unregister notifications into separate helpers
inet: fix IP_TRANSPARENT error handling
...
Diffstat (limited to 'samples')
44 files changed, 145 insertions, 3720 deletions
diff --git a/samples/bpf/.gitignore b/samples/bpf/.gitignore index 0e7bfdbff80a..0002cd359fb1 100644 --- a/samples/bpf/.gitignore +++ b/samples/bpf/.gitignore @@ -37,22 +37,10 @@ tracex4 tracex5 tracex6 tracex7 -xdp1 -xdp2 xdp_adjust_tail xdp_fwd -xdp_monitor -xdp_redirect -xdp_redirect_cpu -xdp_redirect_map -xdp_redirect_map_multi xdp_router_ipv4 -xdp_rxq_info -xdp_sample_pkts xdp_tx_iptunnel -xdpsock -xdpsock_ctrl_proc -xsk_fwd testfile.img hbm_out.log iperf.* diff --git a/samples/bpf/Makefile b/samples/bpf/Makefile index 615f24ebc49c..4ccf4236031c 100644 --- a/samples/bpf/Makefile +++ b/samples/bpf/Makefile @@ -30,8 +30,6 @@ tprogs-y += test_cgrp2_array_pin tprogs-y += test_cgrp2_attach tprogs-y += test_cgrp2_sock tprogs-y += test_cgrp2_sock2 -tprogs-y += xdp1 -tprogs-y += xdp2 tprogs-y += xdp_router_ipv4 tprogs-y += test_current_task_under_cgroup tprogs-y += trace_event @@ -41,22 +39,14 @@ tprogs-y += lwt_len_hist tprogs-y += xdp_tx_iptunnel tprogs-y += test_map_in_map tprogs-y += per_socket_stats_example -tprogs-y += xdp_rxq_info tprogs-y += syscall_tp tprogs-y += cpustat tprogs-y += xdp_adjust_tail tprogs-y += xdp_fwd tprogs-y += task_fd_query -tprogs-y += xdp_sample_pkts tprogs-y += ibumad tprogs-y += hbm -tprogs-y += xdp_redirect_cpu -tprogs-y += xdp_redirect_map_multi -tprogs-y += xdp_redirect_map -tprogs-y += xdp_redirect -tprogs-y += xdp_monitor - # Libbpf dependencies LIBBPF_SRC = $(TOOLS_PATH)/lib/bpf LIBBPF_OUTPUT = $(abspath $(BPF_SAMPLES_PATH))/libbpf @@ -90,9 +80,6 @@ test_cgrp2_array_pin-objs := test_cgrp2_array_pin.o test_cgrp2_attach-objs := test_cgrp2_attach.o test_cgrp2_sock-objs := test_cgrp2_sock.o test_cgrp2_sock2-objs := test_cgrp2_sock2.o -xdp1-objs := xdp1_user.o -# reuse xdp1 source intentionally -xdp2-objs := xdp1_user.o test_current_task_under_cgroup-objs := $(CGROUP_HELPERS) \ test_current_task_under_cgroup_user.o trace_event-objs := trace_event_user.o $(TRACE_HELPERS) @@ -102,21 +89,14 @@ lwt_len_hist-objs := lwt_len_hist_user.o xdp_tx_iptunnel-objs := xdp_tx_iptunnel_user.o test_map_in_map-objs := test_map_in_map_user.o per_socket_stats_example-objs := cookie_uid_helper_example.o -xdp_rxq_info-objs := xdp_rxq_info_user.o syscall_tp-objs := syscall_tp_user.o cpustat-objs := cpustat_user.o xdp_adjust_tail-objs := xdp_adjust_tail_user.o xdp_fwd-objs := xdp_fwd_user.o task_fd_query-objs := task_fd_query_user.o $(TRACE_HELPERS) -xdp_sample_pkts-objs := xdp_sample_pkts_user.o ibumad-objs := ibumad_user.o hbm-objs := hbm.o $(CGROUP_HELPERS) -xdp_redirect_map_multi-objs := xdp_redirect_map_multi_user.o $(XDP_SAMPLE) -xdp_redirect_cpu-objs := xdp_redirect_cpu_user.o $(XDP_SAMPLE) -xdp_redirect_map-objs := xdp_redirect_map_user.o $(XDP_SAMPLE) -xdp_redirect-objs := xdp_redirect_user.o $(XDP_SAMPLE) -xdp_monitor-objs := xdp_monitor_user.o $(XDP_SAMPLE) xdp_router_ipv4-objs := xdp_router_ipv4_user.o $(XDP_SAMPLE) # Tell kbuild to always build the programs @@ -124,29 +104,27 @@ always-y := $(tprogs-y) always-y += sockex1_kern.o always-y += sockex2_kern.o always-y += sockex3_kern.o -always-y += tracex1_kern.o +always-y += tracex1.bpf.o always-y += tracex2.bpf.o -always-y += tracex3_kern.o -always-y += tracex4_kern.o -always-y += tracex5_kern.o -always-y += tracex6_kern.o -always-y += tracex7_kern.o +always-y += tracex3.bpf.o +always-y += tracex4.bpf.o +always-y += tracex5.bpf.o +always-y += tracex6.bpf.o +always-y += tracex7.bpf.o always-y += sock_flags.bpf.o always-y += test_probe_write_user.bpf.o always-y += trace_output.bpf.o always-y += tcbpf1_kern.o always-y += tc_l2_redirect_kern.o always-y += lathist_kern.o -always-y += offwaketime_kern.o -always-y += spintest_kern.o +always-y += offwaketime.bpf.o +always-y += spintest.bpf.o always-y += map_perf_test.bpf.o always-y += test_overhead_tp.bpf.o always-y += test_overhead_raw_tp.bpf.o always-y += test_overhead_kprobe.bpf.o always-y += parse_varlen.o parse_simple.o parse_ldabs.o always-y += test_cgrp2_tc.bpf.o -always-y += xdp1_kern.o -always-y += xdp2_kern.o always-y += test_current_task_under_cgroup.bpf.o always-y += trace_event_kern.o always-y += sampleip_kern.o @@ -162,14 +140,12 @@ always-y += tcp_clamp_kern.o always-y += tcp_basertt_kern.o always-y += tcp_tos_reflect_kern.o always-y += tcp_dumpstats_kern.o -always-y += xdp_rxq_info_kern.o always-y += xdp2skb_meta_kern.o always-y += syscall_tp_kern.o always-y += cpustat_kern.o always-y += xdp_adjust_tail_kern.o always-y += xdp_fwd_kern.o always-y += task_fd_query_kern.o -always-y += xdp_sample_pkts_kern.o always-y += ibumad_kern.o always-y += hbm_out_kern.o always-y += hbm_edt_kern.o @@ -207,11 +183,6 @@ TPROGS_LDFLAGS := -L$(SYSROOT)/usr/lib endif TPROGS_LDLIBS += $(LIBBPF) -lelf -lz -TPROGLDLIBS_xdp_monitor += -lm -TPROGLDLIBS_xdp_redirect += -lm -TPROGLDLIBS_xdp_redirect_cpu += -lm -TPROGLDLIBS_xdp_redirect_map += -lm -TPROGLDLIBS_xdp_redirect_map_multi += -lm TPROGLDLIBS_xdp_router_ipv4 += -lm -pthread TPROGLDLIBS_tracex4 += -lrt TPROGLDLIBS_trace_output += -lrt @@ -248,7 +219,7 @@ BTF_LLC_PROBE := $(shell $(LLC) -march=bpf -mattr=help 2>&1 | grep dwarfris) BTF_PAHOLE_PROBE := $(shell $(BTF_PAHOLE) --help 2>&1 | grep BTF) BTF_OBJCOPY_PROBE := $(shell $(LLVM_OBJCOPY) --help 2>&1 | grep -i 'usage.*llvm') BTF_LLVM_PROBE := $(shell echo "int main() { return 0; }" | \ - $(CLANG) -target bpf -O2 -g -c -x c - -o ./llvm_btf_verify.o; \ + $(CLANG) --target=bpf -O2 -g -c -x c - -o ./llvm_btf_verify.o; \ $(LLVM_READELF) -S ./llvm_btf_verify.o | grep BTF; \ /bin/rm -f ./llvm_btf_verify.o) @@ -326,14 +297,9 @@ $(obj)/$(TRACE_HELPERS) $(obj)/$(CGROUP_HELPERS) $(obj)/$(XDP_SAMPLE): | libbpf_ .PHONY: libbpf_hdrs -$(obj)/xdp_redirect_cpu_user.o: $(obj)/xdp_redirect_cpu.skel.h -$(obj)/xdp_redirect_map_multi_user.o: $(obj)/xdp_redirect_map_multi.skel.h -$(obj)/xdp_redirect_map_user.o: $(obj)/xdp_redirect_map.skel.h -$(obj)/xdp_redirect_user.o: $(obj)/xdp_redirect.skel.h -$(obj)/xdp_monitor_user.o: $(obj)/xdp_monitor.skel.h $(obj)/xdp_router_ipv4_user.o: $(obj)/xdp_router_ipv4.skel.h -$(obj)/tracex5_kern.o: $(obj)/syscall_nrs.h +$(obj)/tracex5.bpf.o: $(obj)/syscall_nrs.h $(obj)/hbm_out_kern.o: $(src)/hbm.h $(src)/hbm_kern.h $(obj)/hbm.o: $(src)/hbm.h $(obj)/hbm_edt_kern.o: $(src)/hbm.h $(src)/hbm_kern.h @@ -370,7 +336,7 @@ endif clean-files += vmlinux.h # Get Clang's default includes on this system, as opposed to those seen by -# '-target bpf'. This fixes "missing" files on some architectures/distros, +# '--target=bpf'. This fixes "missing" files on some architectures/distros, # such as asm/byteorder.h, asm/socket.h, asm/sockios.h, sys/cdefs.h etc. # # Use '-idirafter': Don't interfere with include mechanics except where the @@ -383,31 +349,19 @@ endef CLANG_SYS_INCLUDES = $(call get_sys_includes,$(CLANG)) -$(obj)/xdp_redirect_cpu.bpf.o: $(obj)/xdp_sample.bpf.o -$(obj)/xdp_redirect_map_multi.bpf.o: $(obj)/xdp_sample.bpf.o -$(obj)/xdp_redirect_map.bpf.o: $(obj)/xdp_sample.bpf.o -$(obj)/xdp_redirect.bpf.o: $(obj)/xdp_sample.bpf.o -$(obj)/xdp_monitor.bpf.o: $(obj)/xdp_sample.bpf.o $(obj)/xdp_router_ipv4.bpf.o: $(obj)/xdp_sample.bpf.o $(obj)/%.bpf.o: $(src)/%.bpf.c $(obj)/vmlinux.h $(src)/xdp_sample.bpf.h $(src)/xdp_sample_shared.h @echo " CLANG-BPF " $@ - $(Q)$(CLANG) -g -O2 -target bpf -D__TARGET_ARCH_$(SRCARCH) \ + $(Q)$(CLANG) -g -O2 --target=bpf -D__TARGET_ARCH_$(SRCARCH) \ -Wno-compare-distinct-pointer-types -I$(srctree)/include \ -I$(srctree)/samples/bpf -I$(srctree)/tools/include \ -I$(LIBBPF_INCLUDE) $(CLANG_SYS_INCLUDES) \ -c $(filter %.bpf.c,$^) -o $@ -LINKED_SKELS := xdp_redirect_cpu.skel.h xdp_redirect_map_multi.skel.h \ - xdp_redirect_map.skel.h xdp_redirect.skel.h xdp_monitor.skel.h \ - xdp_router_ipv4.skel.h +LINKED_SKELS := xdp_router_ipv4.skel.h clean-files += $(LINKED_SKELS) -xdp_redirect_cpu.skel.h-deps := xdp_redirect_cpu.bpf.o xdp_sample.bpf.o -xdp_redirect_map_multi.skel.h-deps := xdp_redirect_map_multi.bpf.o xdp_sample.bpf.o -xdp_redirect_map.skel.h-deps := xdp_redirect_map.bpf.o xdp_sample.bpf.o -xdp_redirect.skel.h-deps := xdp_redirect.bpf.o xdp_sample.bpf.o -xdp_monitor.skel.h-deps := xdp_monitor.bpf.o xdp_sample.bpf.o xdp_router_ipv4.skel.h-deps := xdp_router_ipv4.bpf.o xdp_sample.bpf.o LINKED_BPF_SRCS := $(patsubst %.bpf.o,%.bpf.c,$(foreach skel,$(LINKED_SKELS),$($(skel)-deps))) @@ -440,7 +394,7 @@ $(obj)/%.o: $(src)/%.c -Wno-gnu-variable-sized-type-not-at-end \ -Wno-address-of-packed-member -Wno-tautological-compare \ -Wno-unknown-warning-option $(CLANG_ARCH_ARGS) \ - -fno-asynchronous-unwind-tables \ + -fno-asynchronous-unwind-tables -fcf-protection \ -I$(srctree)/samples/bpf/ -include asm_goto_workaround.h \ -O2 -emit-llvm -Xclang -disable-llvm-passes -c $< -o - | \ $(OPT) -O2 -mtriple=bpf-pc-linux | $(LLVM_DIS) | \ diff --git a/samples/bpf/README.rst b/samples/bpf/README.rst index 57f93edd1957..cabe2d216997 100644 --- a/samples/bpf/README.rst +++ b/samples/bpf/README.rst @@ -4,15 +4,24 @@ eBPF sample programs This directory contains a test stubs, verifier test-suite and examples for using eBPF. The examples use libbpf from tools/lib/bpf. +Note that the XDP-specific samples have been removed from this directory and +moved to the xdp-tools repository: https://github.com/xdp-project/xdp-tools +See the commit messages removing each tool from this directory for how to +convert specific command invocations between the old samples and the utilities +in xdp-tools. + Build dependencies ================== Compiling requires having installed: - * clang >= version 3.4.0 - * llvm >= version 3.7.1 + * clang + * llvm + * pahole -Note that LLVM's tool 'llc' must support target 'bpf', list version -and supported targets with command: ``llc --version`` +Consult :ref:`Documentation/process/changes.rst <changes>` for the minimum +version numbers required and how to update them. Note that LLVM's tool +'llc' must support target 'bpf', list version and supported targets with +command: ``llc --version`` Clean and configuration ----------------------- @@ -24,7 +33,8 @@ after some changes (on demand):: make -C samples/bpf clean make clean -Configure kernel, defconfig for instance:: +Configure kernel, defconfig for instance +(see "tools/testing/selftests/bpf/config" for a reference config):: make defconfig diff --git a/samples/bpf/gnu/stubs.h b/samples/bpf/gnu/stubs.h index 719225b16626..1c638d9dce1a 100644 --- a/samples/bpf/gnu/stubs.h +++ b/samples/bpf/gnu/stubs.h @@ -1 +1 @@ -/* dummy .h to trick /usr/include/features.h to work with 'clang -target bpf' */ +/* dummy .h to trick /usr/include/features.h to work with 'clang --target=bpf' */ diff --git a/samples/bpf/net_shared.h b/samples/bpf/net_shared.h index e9429af9aa44..88cc52461c98 100644 --- a/samples/bpf/net_shared.h +++ b/samples/bpf/net_shared.h @@ -17,6 +17,8 @@ #define TC_ACT_OK 0 #define TC_ACT_SHOT 2 +#define IFNAMSIZ 16 + #if defined(__BYTE_ORDER__) && defined(__ORDER_LITTLE_ENDIAN__) && \ __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__ #define bpf_ntohs(x) __builtin_bswap16(x) diff --git a/samples/bpf/offwaketime_kern.c b/samples/bpf/offwaketime.bpf.c index 23f12b47e9e5..4a65ba76c1b1 100644 --- a/samples/bpf/offwaketime_kern.c +++ b/samples/bpf/offwaketime.bpf.c @@ -4,20 +4,15 @@ * modify it under the terms of version 2 of the GNU General Public * License as published by the Free Software Foundation. */ -#include <uapi/linux/bpf.h> -#include <uapi/linux/ptrace.h> -#include <uapi/linux/perf_event.h> +#include "vmlinux.h" #include <linux/version.h> -#include <linux/sched.h> #include <bpf/bpf_helpers.h> #include <bpf/bpf_tracing.h> +#include <bpf/bpf_core_read.h> -#define _(P) \ - ({ \ - typeof(P) val; \ - bpf_probe_read_kernel(&val, sizeof(val), &(P)); \ - val; \ - }) +#ifndef PERF_MAX_STACK_DEPTH +#define PERF_MAX_STACK_DEPTH 127 +#endif #define MINBLOCK_US 1 #define MAX_ENTRIES 10000 @@ -67,11 +62,9 @@ struct { SEC("kprobe/try_to_wake_up") int waker(struct pt_regs *ctx) { - struct task_struct *p = (void *) PT_REGS_PARM1(ctx); + struct task_struct *p = (void *)PT_REGS_PARM1_CORE(ctx); + u32 pid = BPF_CORE_READ(p, pid); struct wokeby_t woke; - u32 pid; - - pid = _(p->pid); bpf_get_current_comm(&woke.name, sizeof(woke.name)); woke.ret = bpf_get_stackid(ctx, &stackmap, STACKID_FLAGS); @@ -111,28 +104,18 @@ static inline int update_counts(void *ctx, u32 pid, u64 delta) #if 1 /* taken from /sys/kernel/tracing/events/sched/sched_switch/format */ -struct sched_switch_args { - unsigned long long pad; - char prev_comm[TASK_COMM_LEN]; - int prev_pid; - int prev_prio; - long long prev_state; - char next_comm[TASK_COMM_LEN]; - int next_pid; - int next_prio; -}; SEC("tracepoint/sched/sched_switch") -int oncpu(struct sched_switch_args *ctx) +int oncpu(struct trace_event_raw_sched_switch *ctx) { /* record previous thread sleep time */ u32 pid = ctx->prev_pid; #else -SEC("kprobe/finish_task_switch") +SEC("kprobe.multi/finish_task_switch*") int oncpu(struct pt_regs *ctx) { - struct task_struct *p = (void *) PT_REGS_PARM1(ctx); + struct task_struct *p = (void *)PT_REGS_PARM1_CORE(ctx); /* record previous thread sleep time */ - u32 pid = _(p->pid); + u32 pid = BPF_CORE_READ(p, pid); #endif u64 delta, ts, *tsp; diff --git a/samples/bpf/offwaketime_user.c b/samples/bpf/offwaketime_user.c index b6eedcb98fb9..5557b5393642 100644 --- a/samples/bpf/offwaketime_user.c +++ b/samples/bpf/offwaketime_user.c @@ -105,7 +105,7 @@ int main(int argc, char **argv) return 2; } - snprintf(filename, sizeof(filename), "%s_kern.o", argv[0]); + snprintf(filename, sizeof(filename), "%s.bpf.o", argv[0]); obj = bpf_object__open_file(filename, NULL); if (libbpf_get_error(obj)) { fprintf(stderr, "ERROR: opening BPF object file failed\n"); diff --git a/samples/bpf/spintest_kern.c b/samples/bpf/spintest.bpf.c index 455da77319d9..cba5a9d50783 100644 --- a/samples/bpf/spintest_kern.c +++ b/samples/bpf/spintest.bpf.c @@ -4,14 +4,15 @@ * modify it under the terms of version 2 of the GNU General Public * License as published by the Free Software Foundation. */ -#include <linux/skbuff.h> -#include <linux/netdevice.h> +#include "vmlinux.h" #include <linux/version.h> -#include <uapi/linux/bpf.h> -#include <uapi/linux/perf_event.h> #include <bpf/bpf_helpers.h> #include <bpf/bpf_tracing.h> +#ifndef PERF_MAX_STACK_DEPTH +#define PERF_MAX_STACK_DEPTH 127 +#endif + struct { __uint(type, BPF_MAP_TYPE_HASH); __type(key, long); @@ -46,20 +47,10 @@ int foo(struct pt_regs *ctx) \ } /* add kprobes to all possible *spin* functions */ -SEC("kprobe/spin_unlock")PROG(p1) -SEC("kprobe/spin_lock")PROG(p2) -SEC("kprobe/mutex_spin_on_owner")PROG(p3) -SEC("kprobe/rwsem_spin_on_owner")PROG(p4) -SEC("kprobe/spin_unlock_irqrestore")PROG(p5) -SEC("kprobe/_raw_spin_unlock_irqrestore")PROG(p6) -SEC("kprobe/_raw_spin_unlock_bh")PROG(p7) -SEC("kprobe/_raw_spin_unlock")PROG(p8) -SEC("kprobe/_raw_spin_lock_irqsave")PROG(p9) -SEC("kprobe/_raw_spin_trylock_bh")PROG(p10) -SEC("kprobe/_raw_spin_lock_irq")PROG(p11) -SEC("kprobe/_raw_spin_trylock")PROG(p12) -SEC("kprobe/_raw_spin_lock")PROG(p13) -SEC("kprobe/_raw_spin_lock_bh")PROG(p14) +SEC("kprobe.multi/spin_*lock*")PROG(spin_lock) +SEC("kprobe.multi/*_spin_on_owner")PROG(spin_on_owner) +SEC("kprobe.multi/_raw_spin_*lock*")PROG(raw_spin_lock) + /* and to inner bpf helpers */ SEC("kprobe/htab_map_update_elem")PROG(p15) SEC("kprobe/__htab_percpu_map_update_elem")PROG(p16) diff --git a/samples/bpf/spintest_user.c b/samples/bpf/spintest_user.c index aadac14f748a..55971edb1088 100644 --- a/samples/bpf/spintest_user.c +++ b/samples/bpf/spintest_user.c @@ -9,13 +9,12 @@ int main(int ac, char **argv) { - char filename[256], symbol[256]; struct bpf_object *obj = NULL; struct bpf_link *links[20]; long key, next_key, value; struct bpf_program *prog; int map_fd, i, j = 0; - const char *section; + char filename[256]; struct ksym *sym; if (load_kallsyms()) { @@ -23,7 +22,7 @@ int main(int ac, char **argv) return 2; } - snprintf(filename, sizeof(filename), "%s_kern.o", argv[0]); + snprintf(filename, sizeof(filename), "%s.bpf.o", argv[0]); obj = bpf_object__open_file(filename, NULL); if (libbpf_get_error(obj)) { fprintf(stderr, "ERROR: opening BPF object file failed\n"); @@ -44,20 +43,13 @@ int main(int ac, char **argv) } bpf_object__for_each_program(prog, obj) { - section = bpf_program__section_name(prog); - if (sscanf(section, "kprobe/%s", symbol) != 1) - continue; - - /* Attach prog only when symbol exists */ - if (ksym_get_addr(symbol)) { - links[j] = bpf_program__attach(prog); - if (libbpf_get_error(links[j])) { - fprintf(stderr, "bpf_program__attach failed\n"); - links[j] = NULL; - goto cleanup; - } - j++; + links[j] = bpf_program__attach(prog); + if (libbpf_get_error(links[j])) { + fprintf(stderr, "bpf_program__attach failed\n"); + links[j] = NULL; + goto cleanup; } + j++; } for (i = 0; i < 5; i++) { diff --git a/samples/bpf/syscall_tp_kern.c b/samples/bpf/syscall_tp_kern.c index e7121dd1ee37..090fecfe641a 100644 --- a/samples/bpf/syscall_tp_kern.c +++ b/samples/bpf/syscall_t |