diff options
Diffstat (limited to 'samples')
25 files changed, 75 insertions, 116 deletions
diff --git a/samples/bpf/cpustat_kern.c b/samples/bpf/cpustat_kern.c index 944f13fe164a..7ec7143e2757 100644 --- a/samples/bpf/cpustat_kern.c +++ b/samples/bpf/cpustat_kern.c @@ -211,7 +211,7 @@ int bpf_prog1(struct cpu_args *ctx) SEC("tracepoint/power/cpu_frequency") int bpf_prog2(struct cpu_args *ctx) { - u64 *pts, *cstate, *pstate, prev_state, cur_ts, delta; + u64 *pts, *cstate, *pstate, cur_ts, delta; u32 key, cpu, pstate_idx; u64 *val; @@ -232,7 +232,6 @@ int bpf_prog2(struct cpu_args *ctx) if (!cstate) return 0; - prev_state = *pstate; *pstate = ctx->state; if (!*pts) { diff --git a/samples/configfs/configfs_sample.c b/samples/configfs/configfs_sample.c index 37a657b25d58..fd5d163828c5 100644 --- a/samples/configfs/configfs_sample.c +++ b/samples/configfs/configfs_sample.c @@ -364,4 +364,5 @@ static void __exit configfs_example_exit(void) module_init(configfs_example_init); module_exit(configfs_example_exit); +MODULE_DESCRIPTION("Sample configfs module"); MODULE_LICENSE("GPL"); diff --git a/samples/fprobe/fprobe_example.c b/samples/fprobe/fprobe_example.c index 64e715e7ed11..0a50b05add96 100644 --- a/samples/fprobe/fprobe_example.c +++ b/samples/fprobe/fprobe_example.c @@ -150,4 +150,5 @@ static void __exit fprobe_exit(void) module_init(fprobe_init) module_exit(fprobe_exit) +MODULE_DESCRIPTION("sample kernel module showing the use of fprobe"); MODULE_LICENSE("GPL"); diff --git a/samples/hid/Makefile b/samples/hid/Makefile index c128ccd49974..8ea59e9631a3 100644 --- a/samples/hid/Makefile +++ b/samples/hid/Makefile @@ -16,7 +16,6 @@ LIBBPF_DESTDIR = $(LIBBPF_OUTPUT) LIBBPF_INCLUDE = $(LIBBPF_DESTDIR)/include LIBBPF = $(LIBBPF_OUTPUT)/libbpf.a -EXTRA_HEADERS := hid_bpf_attach.h EXTRA_BPF_HEADERS := hid_bpf_helpers.h hid_mouse-objs := hid_mouse.o @@ -207,8 +206,8 @@ $(obj)/%.bpf.o: $(src)/%.bpf.c $(EXTRA_BPF_HEADERS_SRC) $(obj)/vmlinux.h LINKED_SKELS := hid_mouse.skel.h hid_surface_dial.skel.h clean-files += $(LINKED_SKELS) -hid_mouse.skel.h-deps := hid_mouse.bpf.o hid_bpf_attach.bpf.o -hid_surface_dial.skel.h-deps := hid_surface_dial.bpf.o hid_bpf_attach.bpf.o +hid_mouse.skel.h-deps := hid_mouse.bpf.o +hid_surface_dial.skel.h-deps := hid_surface_dial.bpf.o LINKED_BPF_SRCS := $(patsubst %.bpf.o,%.bpf.c,$(foreach skel,$(LINKED_SKELS),$($(skel)-deps))) diff --git a/samples/hid/hid_bpf_attach.bpf.c b/samples/hid/hid_bpf_attach.bpf.c deleted file mode 100644 index d4dce4ea7c6e..000000000000 --- a/samples/hid/hid_bpf_attach.bpf.c +++ /dev/null @@ -1,18 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-only -/* Copyright (c) 2022 Benjamin Tissoires - */ - -#include "vmlinux.h" -#include <bpf/bpf_helpers.h> -#include <bpf/bpf_tracing.h> -#include "hid_bpf_attach.h" -#include "hid_bpf_helpers.h" - -SEC("syscall") -int attach_prog(struct attach_prog_args *ctx) -{ - ctx->retval = hid_bpf_attach_prog(ctx->hid, - ctx->prog_fd, - 0); - return 0; -} diff --git a/samples/hid/hid_bpf_attach.h b/samples/hid/hid_bpf_attach.h deleted file mode 100644 index 35bb28b49264..000000000000 --- a/samples/hid/hid_bpf_attach.h +++ /dev/null @@ -1,14 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0-only */ -/* Copyright (c) 2022 Benjamin Tissoires - */ - -#ifndef __HID_BPF_ATTACH_H -#define __HID_BPF_ATTACH_H - -struct attach_prog_args { - int prog_fd; - unsigned int hid; - int retval; -}; - -#endif /* __HID_BPF_ATTACH_H */ diff --git a/samples/hid/hid_mouse.bpf.c b/samples/hid/hid_mouse.bpf.c index 7c8b453ccb16..f7f722dcf56d 100644 --- a/samples/hid/hid_mouse.bpf.c +++ b/samples/hid/hid_mouse.bpf.c @@ -5,8 +5,7 @@ #include <bpf/bpf_tracing.h> #include "hid_bpf_helpers.h" -SEC("fmod_ret/hid_bpf_device_event") -int BPF_PROG(hid_y_event, struct hid_bpf_ctx *hctx) +static int hid_y_event(struct hid_bpf_ctx *hctx) { s16 y; __u8 *data = hid_bpf_get_data(hctx, 0 /* offset */, 9 /* size */); @@ -51,8 +50,7 @@ int BPF_PROG(hid_y_event, struct hid_bpf_ctx *hctx) return 0; } -SEC("fmod_ret/hid_bpf_device_event") -int BPF_PROG(hid_x_event, struct hid_bpf_ctx *hctx) +static int hid_x_event(struct hid_bpf_ctx *hctx) { s16 x; __u8 *data = hid_bpf_get_data(hctx, 0 /* offset */, 9 /* size */); @@ -69,7 +67,19 @@ int BPF_PROG(hid_x_event, struct hid_bpf_ctx *hctx) return 0; } -SEC("fmod_ret/hid_bpf_rdesc_fixup") +SEC("struct_ops/hid_device_event") +int BPF_PROG(hid_event, struct hid_bpf_ctx *hctx, enum hid_report_type type) +{ + int ret = hid_y_event(hctx); + + if (ret) + return ret; + + return hid_x_event(hctx); +} + + +SEC("struct_ops/hid_rdesc_fixup") int BPF_PROG(hid_rdesc_fixup, struct hid_bpf_ctx *hctx) { __u8 *data = hid_bpf_get_data(hctx, 0 /* offset */, 4096 /* size */); @@ -109,4 +119,10 @@ int BPF_PROG(hid_rdesc_fixup, struct hid_bpf_ctx *hctx) return 0; } +SEC(".struct_ops.link") +struct hid_bpf_ops mouse_invert = { + .hid_rdesc_fixup = (void *)hid_rdesc_fixup, + .hid_device_event = (void *)hid_event, +}; + char _license[] SEC("license") = "GPL"; diff --git a/samples/hid/hid_mouse.c b/samples/hid/hid_mouse.c index 018f1185f203..4b80d4e4c154 100644 --- a/samples/hid/hid_mouse.c +++ b/samples/hid/hid_mouse.c @@ -29,7 +29,6 @@ #include <bpf/libbpf.h> #include "hid_mouse.skel.h" -#include "hid_bpf_attach.h" static bool running = true; @@ -76,18 +75,11 @@ static int get_hid_id(const char *path) int main(int argc, char **argv) { struct hid_mouse *skel; - struct bpf_program *prog; + struct bpf_link *link; int err; const char *optstr = ""; const char *sysfs_path; - int opt, hid_id, attach_fd; - struct attach_prog_args args = { - .retval = -1, - }; - DECLARE_LIBBPF_OPTS(bpf_test_run_opts, tattr, - .ctx_in = &args, - .ctx_size_in = sizeof(args), - ); + int opt, hid_id; while ((opt = getopt(argc, argv, optstr)) != -1) { switch (opt) { @@ -108,7 +100,7 @@ int main(int argc, char **argv) return 1; } - skel = hid_mouse__open_and_load(); + skel = hid_mouse__open(); if (!skel) { fprintf(stderr, "%s %s:%d", __func__, __FILE__, __LINE__); return -1; @@ -120,27 +112,18 @@ int main(int argc, char **argv) fprintf(stderr, "can not open HID device: %m\n"); return 1; } - args.hid = hid_id; + skel->struct_ops.mouse_invert->hid_id = hid_id; - attach_fd = bpf_program__fd(skel->progs.attach_prog); - if (attach_fd < 0) { - fprintf(stderr, "can't locate attach prog: %m\n"); + err = hid_mouse__load(skel); + if (err < 0) { + fprintf(stderr, "can not load HID-BPF program: %m\n"); return 1; } - bpf_object__for_each_program(prog, *skel->skeleton->obj) { - /* ignore syscalls */ - if (bpf_program__get_type(prog) != BPF_PROG_TYPE_TRACING) - continue; - - args.retval = -1; - args.prog_fd = bpf_program__fd(prog); - err = bpf_prog_test_run_opts(attach_fd, &tattr); - if (err) { - fprintf(stderr, "can't attach prog to hid device %d: %m (err: %d)\n", - hid_id, err); - return 1; - } + link = bpf_map__attach_struct_ops(skel->maps.mouse_invert); + if (!link) { + fprintf(stderr, "can not attach HID-BPF program: %m\n"); + return 1; } signal(SIGINT, int_exit); diff --git a/samples/hid/hid_surface_dial.bpf.c b/samples/hid/hid_surface_dial.bpf.c index 1f80478c0918..527d584812ab 100644 --- a/samples/hid/hid_surface_dial.bpf.c +++ b/samples/hid/hid_surface_dial.bpf.c @@ -10,7 +10,7 @@ #define HID_UP_BUTTON 0x0009 #define HID_GD_WHEEL 0x0038 -SEC("fmod_ret/hid_bpf_device_event") +SEC("struct_ops/hid_device_event") int BPF_PROG(hid_event, struct hid_bpf_ctx *hctx) { __u8 *data = hid_bpf_get_data(hctx, 0 /* offset */, 9 /* size */); @@ -101,7 +101,7 @@ int set_haptic(struct haptic_syscall_args *args) } /* Convert REL_DIAL into REL_WHEEL */ -SEC("fmod_ret/hid_bpf_rdesc_fixup") +SEC("struct_ops/hid_rdesc_fixup") int BPF_PROG(hid_rdesc_fixup, struct hid_bpf_ctx *hctx) { __u8 *data = hid_bpf_get_data(hctx, 0 /* offset */, 4096 /* size */); @@ -130,5 +130,11 @@ int BPF_PROG(hid_rdesc_fixup, struct hid_bpf_ctx *hctx) return 0; } +SEC(".struct_ops.link") +struct hid_bpf_ops surface_dial = { + .hid_rdesc_fixup = (void *)hid_rdesc_fixup, + .hid_device_event = (void *)hid_event, +}; + char _license[] SEC("license") = "GPL"; u32 _version SEC("version") = 1; diff --git a/samples/hid/hid_surface_dial.c b/samples/hid/hid_surface_dial.c index 4bc97373a708..9dd363845a85 100644 --- a/samples/hid/hid_surface_dial.c +++ b/samples/hid/hid_surface_dial.c @@ -31,7 +31,6 @@ #include <bpf/libbpf.h> #include "hid_surface_dial.skel.h" -#include "hid_bpf_attach.h" static bool running = true; @@ -86,34 +85,6 @@ static int get_hid_id(const char *path) return (int)strtol(str_id, NULL, 16); } -static int attach_prog(struct hid_surface_dial *skel, struct bpf_program *prog, int hid_id) -{ - struct attach_prog_args args = { - .hid = hid_id, - .retval = -1, - }; - int attach_fd, err; - DECLARE_LIBBPF_OPTS(bpf_test_run_opts, tattr, - .ctx_in = &args, - .ctx_size_in = sizeof(args), - ); - - attach_fd = bpf_program__fd(skel->progs.attach_prog); - if (attach_fd < 0) { - fprintf(stderr, "can't locate attach prog: %m\n"); - return 1; - } - - args.prog_fd = bpf_program__fd(prog); - err = bpf_prog_test_run_opts(attach_fd, &tattr); - if (err) { - fprintf(stderr, "can't attach prog to hid device %d: %m (err: %d)\n", - hid_id, err); - return 1; - } - return 0; -} - static int set_haptic(struct hid_surface_dial *skel, int hid_id) { struct haptic_syscall_args args = { @@ -144,10 +115,10 @@ static int set_haptic(struct hid_surface_dial *skel, int hid_id) int main(int argc, char **argv) { struct hid_surface_dial *skel; - struct bpf_program *prog; const char *optstr = "r:"; + struct bpf_link *link; const char *sysfs_path; - int opt, hid_id, resolution = 72; + int err, opt, hid_id, resolution = 72; while ((opt = getopt(argc, argv, optstr)) != -1) { switch (opt) { @@ -189,7 +160,7 @@ int main(int argc, char **argv) return 1; } - skel = hid_surface_dial__open_and_load(); + skel = hid_surface_dial__open(); if (!skel) { fprintf(stderr, "%s %s:%d", __func__, __FILE__, __LINE__); return -1; @@ -201,15 +172,21 @@ int main(int argc, char **argv) return 1; } + skel->struct_ops.surface_dial->hid_id = hid_id; + + err = hid_surface_dial__load(skel); + if (err < 0) { + fprintf(stderr, "can not load HID-BPF program: %m\n"); + return 1; + } + skel->data->resolution = resolution; skel->data->physical = (int)(resolution / 72); - bpf_object__for_each_program(prog, *skel->skeleton->obj) { - /* ignore syscalls */ - if (bpf_program__get_type(prog) != BPF_PROG_TYPE_TRACING) - continue; - - attach_prog(skel, prog, hid_id); + link = bpf_map__attach_struct_ops(skel->maps.surface_dial); + if (!link) { + fprintf(stderr, "can not attach HID-BPF program: %m\n"); + return 1; } signal(SIGINT, int_exit); diff --git a/samples/kfifo/bytestream-example.c b/samples/kfifo/bytestream-example.c index 642d0748c169..4ae29a12cc8a 100644 --- a/samples/kfifo/bytestream-example.c +++ b/samples/kfifo/bytestream-example.c @@ -191,5 +191,6 @@ static void __exit example_exit(void) module_init(example_init); module_exit(example_exit); +MODULE_DESCRIPTION("Sample kfifo byte stream implementation"); MODULE_LICENSE("GPL"); MODULE_AUTHOR("Stefani Seibold <stefani@seibold.net>"); diff --git a/samples/kfifo/dma-example.c b/samples/kfifo/dma-example.c index 74fe915b7ffe..48df719dac8c 100644 --- a/samples/kfifo/dma-example.c +++ b/samples/kfifo/dma-example.c @@ -138,5 +138,6 @@ static void __exit example_exit(void) module_init(example_init); module_exit(example_exit); +MODULE_DESCRIPTION("Sample fifo dma implementation"); MODULE_LICENSE("GPL"); MODULE_AUTHOR("Stefani Seibold <stefani@seibold.net>"); diff --git a/samples/kfifo/inttype-example.c b/samples/kfifo/inttype-example.c index c61482ba94f4..e4f93317c5d0 100644 --- a/samples/kfifo/inttype-example.c +++ b/samples/kfifo/inttype-example.c @@ -182,5 +182,6 @@ static void __exit example_exit(void) module_init(example_init); module_exit(example_exit); +MODULE_DESCRIPTION("Sample kfifo int type implementation"); MODULE_LICENSE("GPL"); MODULE_AUTHOR("Stefani Seibold <stefani@seibold.net>"); diff --git a/samples/kfifo/record-example.c b/samples/kfifo/record-example.c index e4087b2d3fc4..e4d1a2d7983c 100644 --- a/samples/kfifo/record-example.c +++ b/samples/kfifo/record-example.c @@ -198,5 +198,6 @@ static void __exit example_exit(void) module_init(example_init); module_exit(example_exit); +MODULE_DESCRIPTION("Sample dynamic sized record fifo implementation"); MODULE_LICENSE("GPL"); MODULE_AUTHOR("Stefani Seibold <stefani@seibold.net>"); diff --git a/samples/kmemleak/kmemleak-test.c b/samples/kmemleak/kmemleak-test.c index 6ced5ddd99d4..f7470ed85a79 100644 --- a/samples/kmemleak/kmemleak-test.c +++ b/samples/kmemleak/kmemleak-test.c @@ -96,4 +96,5 @@ static void __exit kmemleak_test_exit(void) } module_exit(kmemleak_test_exit); +MODULE_DESCRIPTION("Sample module to leak memory for kmemleak testing"); MODULE_LICENSE("GPL"); diff --git a/samples/kobject/kobject-example.c b/samples/kobject/kobject-example.c index 96678ed73216..c9c3db19799a 100644 --- a/samples/kobject/kobject-example.c +++ b/samples/kobject/kobject-example.c @@ -140,5 +140,6 @@ static void __exit example_exit(void) module_init(example_init); module_exit(example_exit); +MODULE_DESCRIPTION("Sample kobject implementation"); MODULE_LICENSE("GPL v2"); MODULE_AUTHOR("Greg Kroah-Hartman <greg@kroah.com>"); diff --git a/samples/kobject/kset-example.c b/samples/kobject/kset-example.c index 342452282719..552d7e363539 100644 --- a/samples/kobject/kset-example.c +++ b/samples/kobject/kset-example.c @@ -284,5 +284,6 @@ static void __exit example_exit(void) module_init(example_init); module_exit(example_exit); +MODULE_DESCRIPTION("Sample kset and ktype implementation"); MODULE_LICENSE("GPL v2"); MODULE_AUTHOR("Greg Kroah-Hartman <greg@kroah.com>"); diff --git a/samples/kprobes/kprobe_example.c b/samples/kprobes/kprobe_example.c index ef44c614c6d9..53ec6c8b8c40 100644 --- a/samples/kprobes/kprobe_example.c +++ b/samples/kprobes/kprobe_example.c @@ -125,4 +125,5 @@ static void __exit kprobe_exit(void) module_init(kprobe_init) module_exit(kprobe_exit) +MODULE_DESCRIPTION("sample kernel module showing the use of kprobes"); MODULE_LICENSE("GPL"); diff --git a/samples/kprobes/kretprobe_example.c b/samples/kprobes/kretprobe_example.c index ed79fd3d48fb..65d6dcafd742 100644 --- a/samples/kprobes/kretprobe_example.c +++ b/samples/kprobes/kretprobe_example.c @@ -104,4 +104,5 @@ static void __exit kretprobe_exit(void) module_init(kretprobe_init) module_exit(kretprobe_exit) +MODULE_DESCRIPTION("sample kernel module showing the use of return probes"); MODULE_LICENSE("GPL"); diff --git a/samples/qmi/qmi_sample_client.c b/samples/qmi/qmi_sample_client.c index c045e3d24326..a42892523d3b 100644 --- a/samples/qmi/qmi_sample_client.c +++ b/samples/qmi/qmi_sample_client.c @@ -511,7 +511,7 @@ err_release_qmi_handle: return ret; } -static int qmi_sample_remove(struct platform_device *pdev) +static void qmi_sample_remove(struct platform_device *pdev) { struct qmi_sample *sample = platform_get_drvdata(pdev); @@ -520,13 +520,11 @@ static int qmi_sample_remove(struct platform_device *pdev) debugfs_remove(sample->de_dir); qmi_handle_release(&sample->qmi); - - return 0; } static struct platform_driver qmi_sample_driver = { .probe = qmi_sample_probe, - .remove = qmi_sample_remove, + .remove_new = qmi_sample_remove, .driver = { .name = "qmi_sample_client", }, diff --git a/samples/trace_events/trace_custom_sched.c b/samples/trace_events/trace_custom_sched.c index b99d9ab7db85..dd409b704b35 100644 --- a/samples/trace_events/trace_custom_sched.c +++ b/samples/trace_events/trace_custom_sched.c @@ -8,7 +8,6 @@ #define pr_fmt(fmt) fmt #include <linux/trace_events.h> -#include <linux/version.h> #include <linux/module.h> #include <linux/sched.h> diff --git a/samples/vfio-mdev/mbochs.c b/samples/vfio-mdev/mbochs.c index 9062598ea03d..836456837997 100644 --- a/samples/vfio-mdev/mbochs.c +++ b/samples/vfio-mdev/mbochs.c @@ -88,6 +88,7 @@ #define STORE_LE32(addr, val) (*(u32 *)addr = val) +MODULE_DESCRIPTION("Mediated virtual PCI display host device driver"); MODULE_LICENSE("GPL v2"); static int max_mbytes = 256; diff --git a/samples/vfio-mdev/mdpy-fb.c b/samples/vfio-mdev/mdpy-fb.c index 4598bc28acd9..149af7f598f8 100644 --- a/samples/vfio-mdev/mdpy-fb.c +++ b/samples/vfio-mdev/mdpy-fb.c @@ -229,4 +229,5 @@ static int __init mdpy_fb_init(void) module_init(mdpy_fb_init); MODULE_DEVICE_TABLE(pci, mdpy_fb_pci_table); +MODULE_DESCRIPTION("Framebuffer driver for mdpy (mediated virtual pci display device)"); MODULE_LICENSE("GPL v2"); diff --git a/samples/vfio-mdev/mdpy.c b/samples/vfio-mdev/mdpy.c index 27795501de6e..8104831ae125 100644 --- a/samples/vfio-mdev/mdpy.c +++ b/samples/vfio-mdev/mdpy.c @@ -40,6 +40,7 @@ #define STORE_LE32(addr, val) (*(u32 *)addr = val) +MODULE_DESCRIPTION("Mediated virtual PCI display host device driver"); MODULE_LICENSE("GPL v2"); #define MDPY_TYPE_1 "vga" diff --git a/samples/vfio-mdev/mtty.c b/samples/vfio-mdev/mtty.c index 2284b3751240..b382c696c877 100644 --- a/samples/vfio-mdev/mtty.c +++ b/samples/vfio-mdev/mtty.c @@ -2058,6 +2058,6 @@ module_init(mtty_dev_init) module_exit(mtty_dev_exit) MODULE_LICENSE("GPL v2"); -MODULE_INFO(supported, "Test driver that simulate serial port over PCI"); +MODULE_DESCRIPTION("Test driver that simulate serial port over PCI"); MODULE_VERSION(VERSION_STRING); MODULE_AUTHOR(DRIVER_AUTHOR); |