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
$(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
--- /dev/null
+/* Copyright (c) 2016 Facebook
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of version 2 of the GNU General Public
+ * License as published by the Free Software Foundation.
+ */
+#include "vmlinux.h"
+#include <linux/version.h>
+#include <bpf/bpf_helpers.h>
+#include <bpf/bpf_tracing.h>
+
+#ifndef PERF_MAX_STACK_DEPTH
+#define PERF_MAX_STACK_DEPTH 127
+#endif
+
+#define _(P) \
+ ({ \
+ typeof(P) val; \
+ bpf_probe_read_kernel(&val, sizeof(val), &(P)); \
+ val; \
+ })
+
+#define MINBLOCK_US 1
+#define MAX_ENTRIES 10000
+
+struct key_t {
+ char waker[TASK_COMM_LEN];
+ char target[TASK_COMM_LEN];
+ u32 wret;
+ u32 tret;
+};
+
+struct {
+ __uint(type, BPF_MAP_TYPE_HASH);
+ __type(key, struct key_t);
+ __type(value, u64);
+ __uint(max_entries, MAX_ENTRIES);
+} counts SEC(".maps");
+
+struct {
+ __uint(type, BPF_MAP_TYPE_HASH);
+ __type(key, u32);
+ __type(value, u64);
+ __uint(max_entries, MAX_ENTRIES);
+} start SEC(".maps");
+
+struct wokeby_t {
+ char name[TASK_COMM_LEN];
+ u32 ret;
+};
+
+struct {
+ __uint(type, BPF_MAP_TYPE_HASH);
+ __type(key, u32);
+ __type(value, struct wokeby_t);
+ __uint(max_entries, MAX_ENTRIES);
+} wokeby SEC(".maps");
+
+struct {
+ __uint(type, BPF_MAP_TYPE_STACK_TRACE);
+ __uint(key_size, sizeof(u32));
+ __uint(value_size, PERF_MAX_STACK_DEPTH * sizeof(u64));
+ __uint(max_entries, MAX_ENTRIES);
+} stackmap SEC(".maps");
+
+#define STACKID_FLAGS (0 | BPF_F_FAST_STACK_CMP)
+
+SEC("kprobe/try_to_wake_up")
+int waker(struct pt_regs *ctx)
+{
+ struct task_struct *p = (void *) PT_REGS_PARM1(ctx);
+ 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);
+
+ bpf_map_update_elem(&wokeby, &pid, &woke, BPF_ANY);
+ return 0;
+}
+
+static inline int update_counts(void *ctx, u32 pid, u64 delta)
+{
+ struct wokeby_t *woke;
+ u64 zero = 0, *val;
+ struct key_t key;
+
+ __builtin_memset(&key.waker, 0, sizeof(key.waker));
+ bpf_get_current_comm(&key.target, sizeof(key.target));
+ key.tret = bpf_get_stackid(ctx, &stackmap, STACKID_FLAGS);
+ key.wret = 0;
+
+ woke = bpf_map_lookup_elem(&wokeby, &pid);
+ if (woke) {
+ key.wret = woke->ret;
+ __builtin_memcpy(&key.waker, woke->name, sizeof(key.waker));
+ bpf_map_delete_elem(&wokeby, &pid);
+ }
+
+ val = bpf_map_lookup_elem(&counts, &key);
+ if (!val) {
+ bpf_map_update_elem(&counts, &key, &zero, BPF_NOEXIST);
+ val = bpf_map_lookup_elem(&counts, &key);
+ if (!val)
+ return 0;
+ }
+ (*val) += delta;
+ return 0;
+}
+
+#if 1
+/* taken from /sys/kernel/tracing/events/sched/sched_switch/format */
+SEC("tracepoint/sched/sched_switch")
+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")
+int oncpu(struct pt_regs *ctx)
+{
+ struct task_struct *p = (void *) PT_REGS_PARM1(ctx);
+ /* record previous thread sleep time */
+ u32 pid = _(p->pid);
+#endif
+ u64 delta, ts, *tsp;
+
+ ts = bpf_ktime_get_ns();
+ bpf_map_update_elem(&start, &pid, &ts, BPF_ANY);
+
+ /* calculate current thread's delta time */
+ pid = bpf_get_current_pid_tgid();
+ tsp = bpf_map_lookup_elem(&start, &pid);
+ if (!tsp)
+ /* missed start or filtered */
+ return 0;
+
+ delta = bpf_ktime_get_ns() - *tsp;
+ bpf_map_delete_elem(&start, &pid);
+ delta = delta / 1000;
+ if (delta < MINBLOCK_US)
+ return 0;
+
+ return update_counts(ctx, pid, delta);
+}
+char _license[] SEC("license") = "GPL";
+u32 _version SEC("version") = LINUX_VERSION_CODE;
+++ /dev/null
-/* Copyright (c) 2016 Facebook
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of version 2 of the GNU General Public
- * License as published by the Free Software Foundation.
- */
-#include "vmlinux.h"
-#include <linux/version.h>
-#include <bpf/bpf_helpers.h>
-#include <bpf/bpf_tracing.h>
-
-#ifndef PERF_MAX_STACK_DEPTH
-#define PERF_MAX_STACK_DEPTH 127
-#endif
-
-#define _(P) \
- ({ \
- typeof(P) val; \
- bpf_probe_read_kernel(&val, sizeof(val), &(P)); \
- val; \
- })
-
-#define MINBLOCK_US 1
-#define MAX_ENTRIES 10000
-
-struct key_t {
- char waker[TASK_COMM_LEN];
- char target[TASK_COMM_LEN];
- u32 wret;
- u32 tret;
-};
-
-struct {
- __uint(type, BPF_MAP_TYPE_HASH);
- __type(key, struct key_t);
- __type(value, u64);
- __uint(max_entries, MAX_ENTRIES);
-} counts SEC(".maps");
-
-struct {
- __uint(type, BPF_MAP_TYPE_HASH);
- __type(key, u32);
- __type(value, u64);
- __uint(max_entries, MAX_ENTRIES);
-} start SEC(".maps");
-
-struct wokeby_t {
- char name[TASK_COMM_LEN];
- u32 ret;
-};
-
-struct {
- __uint(type, BPF_MAP_TYPE_HASH);
- __type(key, u32);
- __type(value, struct wokeby_t);
- __uint(max_entries, MAX_ENTRIES);
-} wokeby SEC(".maps");
-
-struct {
- __uint(type, BPF_MAP_TYPE_STACK_TRACE);
- __uint(key_size, sizeof(u32));
- __uint(value_size, PERF_MAX_STACK_DEPTH * sizeof(u64));
- __uint(max_entries, MAX_ENTRIES);
-} stackmap SEC(".maps");
-
-#define STACKID_FLAGS (0 | BPF_F_FAST_STACK_CMP)
-
-SEC("kprobe/try_to_wake_up")
-int waker(struct pt_regs *ctx)
-{
- struct task_struct *p = (void *) PT_REGS_PARM1(ctx);
- 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);
-
- bpf_map_update_elem(&wokeby, &pid, &woke, BPF_ANY);
- return 0;
-}
-
-static inline int update_counts(void *ctx, u32 pid, u64 delta)
-{
- struct wokeby_t *woke;
- u64 zero = 0, *val;
- struct key_t key;
-
- __builtin_memset(&key.waker, 0, sizeof(key.waker));
- bpf_get_current_comm(&key.target, sizeof(key.target));
- key.tret = bpf_get_stackid(ctx, &stackmap, STACKID_FLAGS);
- key.wret = 0;
-
- woke = bpf_map_lookup_elem(&wokeby, &pid);
- if (woke) {
- key.wret = woke->ret;
- __builtin_memcpy(&key.waker, woke->name, sizeof(key.waker));
- bpf_map_delete_elem(&wokeby, &pid);
- }
-
- val = bpf_map_lookup_elem(&counts, &key);
- if (!val) {
- bpf_map_update_elem(&counts, &key, &zero, BPF_NOEXIST);
- val = bpf_map_lookup_elem(&counts, &key);
- if (!val)
- return 0;
- }
- (*val) += delta;
- return 0;
-}
-
-#if 1
-/* taken from /sys/kernel/tracing/events/sched/sched_switch/format */
-SEC("tracepoint/sched/sched_switch")
-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")
-int oncpu(struct pt_regs *ctx)
-{
- struct task_struct *p = (void *) PT_REGS_PARM1(ctx);
- /* record previous thread sleep time */
- u32 pid = _(p->pid);
-#endif
- u64 delta, ts, *tsp;
-
- ts = bpf_ktime_get_ns();
- bpf_map_update_elem(&start, &pid, &ts, BPF_ANY);
-
- /* calculate current thread's delta time */
- pid = bpf_get_current_pid_tgid();
- tsp = bpf_map_lookup_elem(&start, &pid);
- if (!tsp)
- /* missed start or filtered */
- return 0;
-
- delta = bpf_ktime_get_ns() - *tsp;
- bpf_map_delete_elem(&start, &pid);
- delta = delta / 1000;
- if (delta < MINBLOCK_US)
- return 0;
-
- return update_counts(ctx, pid, delta);
-}
-char _license[] SEC("license") = "GPL";
-u32 _version SEC("version") = LINUX_VERSION_CODE;
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");
--- /dev/null
+/* Copyright (c) 2016, Facebook
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of version 2 of the GNU General Public
+ * License as published by the Free Software Foundation.
+ */
+#include "vmlinux.h"
+#include <linux/version.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);
+ __type(value, long);
+ __uint(max_entries, 1024);
+} my_map SEC(".maps");
+struct {
+ __uint(type, BPF_MAP_TYPE_PERCPU_HASH);
+ __uint(key_size, sizeof(long));
+ __uint(value_size, sizeof(long));
+ __uint(max_entries, 1024);
+} my_map2 SEC(".maps");
+
+struct {
+ __uint(type, BPF_MAP_TYPE_STACK_TRACE);
+ __uint(key_size, sizeof(u32));
+ __uint(value_size, PERF_MAX_STACK_DEPTH * sizeof(u64));
+ __uint(max_entries, 10000);
+} stackmap SEC(".maps");
+
+#define PROG(foo) \
+int foo(struct pt_regs *ctx) \
+{ \
+ long v = PT_REGS_IP(ctx), *val; \
+\
+ val = bpf_map_lookup_elem(&my_map, &v); \
+ bpf_map_update_elem(&my_map, &v, &v, BPF_ANY); \
+ bpf_map_update_elem(&my_map2, &v, &v, BPF_ANY); \
+ bpf_map_delete_elem(&my_map2, &v); \
+ bpf_get_stackid(ctx, &stackmap, BPF_F_REUSE_STACKID); \
+ return 0; \
+}
+
+/* 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)
+
+/* and to inner bpf helpers */
+SEC("kprobe/htab_map_update_elem")PROG(p15)
+SEC("kprobe/__htab_percpu_map_update_elem")PROG(p16)
+SEC("kprobe/htab_map_alloc")PROG(p17)
+
+char _license[] SEC("license") = "GPL";
+u32 _version SEC("version") = LINUX_VERSION_CODE;
+++ /dev/null
-/* Copyright (c) 2016, Facebook
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of version 2 of the GNU General Public
- * License as published by the Free Software Foundation.
- */
-#include "vmlinux.h"
-#include <linux/version.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);
- __type(value, long);
- __uint(max_entries, 1024);
-} my_map SEC(".maps");
-struct {
- __uint(type, BPF_MAP_TYPE_PERCPU_HASH);
- __uint(key_size, sizeof(long));
- __uint(value_size, sizeof(long));
- __uint(max_entries, 1024);
-} my_map2 SEC(".maps");
-
-struct {
- __uint(type, BPF_MAP_TYPE_STACK_TRACE);
- __uint(key_size, sizeof(u32));
- __uint(value_size, PERF_MAX_STACK_DEPTH * sizeof(u64));
- __uint(max_entries, 10000);
-} stackmap SEC(".maps");
-
-#define PROG(foo) \
-int foo(struct pt_regs *ctx) \
-{ \
- long v = PT_REGS_IP(ctx), *val; \
-\
- val = bpf_map_lookup_elem(&my_map, &v); \
- bpf_map_update_elem(&my_map, &v, &v, BPF_ANY); \
- bpf_map_update_elem(&my_map2, &v, &v, BPF_ANY); \
- bpf_map_delete_elem(&my_map2, &v); \
- bpf_get_stackid(ctx, &stackmap, BPF_F_REUSE_STACKID); \
- return 0; \
-}
-
-/* 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)
-
-/* and to inner bpf helpers */
-SEC("kprobe/htab_map_update_elem")PROG(p15)
-SEC("kprobe/__htab_percpu_map_update_elem")PROG(p16)
-SEC("kprobe/htab_map_alloc")PROG(p17)
-
-char _license[] SEC("license") = "GPL";
-u32 _version SEC("version") = LINUX_VERSION_CODE;
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");
--- /dev/null
+/* Copyright (c) 2013-2015 PLUMgrid, http://plumgrid.com
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of version 2 of the GNU General Public
+ * License as published by the Free Software Foundation.
+ */
+#include "vmlinux.h"
+#include "net_shared.h"
+#include <linux/version.h>
+#include <bpf/bpf_helpers.h>
+#include <bpf/bpf_tracing.h>
+
+#define _(P) \
+ ({ \
+ typeof(P) val = 0; \
+ bpf_probe_read_kernel(&val, sizeof(val), &(P)); \
+ val; \
+ })
+
+/* kprobe is NOT a stable ABI
+ * kernel functions can be removed, renamed or completely change semantics.
+ * Number of arguments and their positions can change, etc.
+ * In such case this bpf+kprobe example will no longer be meaningful
+ */
+SEC("kprobe/__netif_receive_skb_core")
+int bpf_prog1(struct pt_regs *ctx)
+{
+ /* attaches to kprobe __netif_receive_skb_core,
+ * looks for packets on loobpack device and prints them
+ */
+ char devname[IFNAMSIZ];
+ struct net_device *dev;
+ struct sk_buff *skb;
+ int len;
+
+ /* non-portable! works for the given kernel only */
+ bpf_probe_read_kernel(&skb, sizeof(skb), (void *)PT_REGS_PARM1(ctx));
+ dev = _(skb->dev);
+ len = _(skb->len);
+
+ bpf_probe_read_kernel(devname, sizeof(devname), dev->name);
+
+ if (devname[0] == 'l' && devname[1] == 'o') {
+ char fmt[] = "skb %p len %d\n";
+ /* using bpf_trace_printk() for DEBUG ONLY */
+ bpf_trace_printk(fmt, sizeof(fmt), skb, len);
+ }
+
+ return 0;
+}
+
+char _license[] SEC("license") = "GPL";
+u32 _version SEC("version") = LINUX_VERSION_CODE;
+++ /dev/null
-/* Copyright (c) 2013-2015 PLUMgrid, http://plumgrid.com
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of version 2 of the GNU General Public
- * License as published by the Free Software Foundation.
- */
-#include "vmlinux.h"
-#include "net_shared.h"
-#include <linux/version.h>
-#include <bpf/bpf_helpers.h>
-#include <bpf/bpf_tracing.h>
-
-#define _(P) \
- ({ \
- typeof(P) val = 0; \
- bpf_probe_read_kernel(&val, sizeof(val), &(P)); \
- val; \
- })
-
-/* kprobe is NOT a stable ABI
- * kernel functions can be removed, renamed or completely change semantics.
- * Number of arguments and their positions can change, etc.
- * In such case this bpf+kprobe example will no longer be meaningful
- */
-SEC("kprobe/__netif_receive_skb_core")
-int bpf_prog1(struct pt_regs *ctx)
-{
- /* attaches to kprobe __netif_receive_skb_core,
- * looks for packets on loobpack device and prints them
- */
- char devname[IFNAMSIZ];
- struct net_device *dev;
- struct sk_buff *skb;
- int len;
-
- /* non-portable! works for the given kernel only */
- bpf_probe_read_kernel(&skb, sizeof(skb), (void *)PT_REGS_PARM1(ctx));
- dev = _(skb->dev);
- len = _(skb->len);
-
- bpf_probe_read_kernel(devname, sizeof(devname), dev->name);
-
- if (devname[0] == 'l' && devname[1] == 'o') {
- char fmt[] = "skb %p len %d\n";
- /* using bpf_trace_printk() for DEBUG ONLY */
- bpf_trace_printk(fmt, sizeof(fmt), skb, len);
- }
-
- return 0;
-}
-
-char _license[] SEC("license") = "GPL";
-u32 _version SEC("version") = LINUX_VERSION_CODE;
char filename[256];
FILE *f;
- 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");
--- /dev/null
+/* Copyright (c) 2013-2015 PLUMgrid, http://plumgrid.com
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of version 2 of the GNU General Public
+ * License as published by the Free Software Foundation.
+ */
+#include "vmlinux.h"
+#include <linux/version.h>
+#include <bpf/bpf_helpers.h>
+#include <bpf/bpf_tracing.h>
+
+struct {
+ __uint(type, BPF_MAP_TYPE_HASH);
+ __type(key, long);
+ __type(value, u64);
+ __uint(max_entries, 4096);
+} my_map SEC(".maps");
+
+/* kprobe is NOT a stable ABI. If kernel internals change this bpf+kprobe
+ * example will no longer be meaningful
+ */
+SEC("kprobe/blk_mq_start_request")
+int bpf_prog1(struct pt_regs *ctx)
+{
+ long rq = PT_REGS_PARM1(ctx);
+ u64 val = bpf_ktime_get_ns();
+
+ bpf_map_update_elem(&my_map, &rq, &val, BPF_ANY);
+ return 0;
+}
+
+static unsigned int log2l(unsigned long long n)
+{
+#define S(k) if (n >= (1ull << k)) { i += k; n >>= k; }
+ int i = -(n == 0);
+ S(32); S(16); S(8); S(4); S(2); S(1);
+ return i;
+#undef S
+}
+
+#define SLOTS 100
+
+struct {
+ __uint(type, BPF_MAP_TYPE_PERCPU_ARRAY);
+ __uint(key_size, sizeof(u32));
+ __uint(value_size, sizeof(u64));
+ __uint(max_entries, SLOTS);
+} lat_map SEC(".maps");
+
+SEC("kprobe/__blk_account_io_done")
+int bpf_prog2(struct pt_regs *ctx)
+{
+ long rq = PT_REGS_PARM1(ctx);
+ u64 *value, l, base;
+ u32 index;
+
+ value = bpf_map_lookup_elem(&my_map, &rq);
+ if (!value)
+ return 0;
+
+ u64 cur_time = bpf_ktime_get_ns();
+ u64 delta = cur_time - *value;
+
+ bpf_map_delete_elem(&my_map, &rq);
+
+ /* the lines below are computing index = log10(delta)*10
+ * using integer arithmetic
+ * index = 29 ~ 1 usec
+ * index = 59 ~ 1 msec
+ * index = 89 ~ 1 sec
+ * index = 99 ~ 10sec or more
+ * log10(x)*10 = log2(x)*10/log2(10) = log2(x)*3
+ */
+ l = log2l(delta);
+ base = 1ll << l;
+ index = (l * 64 + (delta - base) * 64 / base) * 3 / 64;
+
+ if (index >= SLOTS)
+ index = SLOTS - 1;
+
+ value = bpf_map_lookup_elem(&lat_map, &index);
+ if (value)
+ *value += 1;
+
+ return 0;
+}
+char _license[] SEC("license") = "GPL";
+u32 _version SEC("version") = LINUX_VERSION_CODE;
+++ /dev/null
-/* Copyright (c) 2013-2015 PLUMgrid, http://plumgrid.com
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of version 2 of the GNU General Public
- * License as published by the Free Software Foundation.
- */
-#include "vmlinux.h"
-#include <linux/version.h>
-#include <bpf/bpf_helpers.h>
-#include <bpf/bpf_tracing.h>
-
-struct {
- __uint(type, BPF_MAP_TYPE_HASH);
- __type(key, long);
- __type(value, u64);
- __uint(max_entries, 4096);
-} my_map SEC(".maps");
-
-/* kprobe is NOT a stable ABI. If kernel internals change this bpf+kprobe
- * example will no longer be meaningful
- */
-SEC("kprobe/blk_mq_start_request")
-int bpf_prog1(struct pt_regs *ctx)
-{
- long rq = PT_REGS_PARM1(ctx);
- u64 val = bpf_ktime_get_ns();
-
- bpf_map_update_elem(&my_map, &rq, &val, BPF_ANY);
- return 0;
-}
-
-static unsigned int log2l(unsigned long long n)
-{
-#define S(k) if (n >= (1ull << k)) { i += k; n >>= k; }
- int i = -(n == 0);
- S(32); S(16); S(8); S(4); S(2); S(1);
- return i;
-#undef S
-}
-
-#define SLOTS 100
-
-struct {
- __uint(type, BPF_MAP_TYPE_PERCPU_ARRAY);
- __uint(key_size, sizeof(u32));
- __uint(value_size, sizeof(u64));
- __uint(max_entries, SLOTS);
-} lat_map SEC(".maps");
-
-SEC("kprobe/__blk_account_io_done")
-int bpf_prog2(struct pt_regs *ctx)
-{
- long rq = PT_REGS_PARM1(ctx);
- u64 *value, l, base;
- u32 index;
-
- value = bpf_map_lookup_elem(&my_map, &rq);
- if (!value)
- return 0;
-
- u64 cur_time = bpf_ktime_get_ns();
- u64 delta = cur_time - *value;
-
- bpf_map_delete_elem(&my_map, &rq);
-
- /* the lines below are computing index = log10(delta)*10
- * using integer arithmetic
- * index = 29 ~ 1 usec
- * index = 59 ~ 1 msec
- * index = 89 ~ 1 sec
- * index = 99 ~ 10sec or more
- * log10(x)*10 = log2(x)*10/log2(10) = log2(x)*3
- */
- l = log2l(delta);
- base = 1ll << l;
- index = (l * 64 + (delta - base) * 64 / base) * 3 / 64;
-
- if (index >= SLOTS)
- index = SLOTS - 1;
-
- value = bpf_map_lookup_elem(&lat_map, &index);
- if (value)
- *value += 1;
-
- return 0;
-}
-char _license[] SEC("license") = "GPL";
-u32 _version SEC("version") = LINUX_VERSION_CODE;
}
}
- 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");
--- /dev/null
+/* Copyright (c) 2015 PLUMgrid, http://plumgrid.com
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of version 2 of the GNU General Public
+ * License as published by the Free Software Foundation.
+ */
+#include "vmlinux.h"
+#include <linux/version.h>
+#include <bpf/bpf_helpers.h>
+#include <bpf/bpf_tracing.h>
+
+struct pair {
+ u64 val;
+ u64 ip;
+};
+
+struct {
+ __uint(type, BPF_MAP_TYPE_HASH);
+ __type(key, long);
+ __type(value, struct pair);
+ __uint(max_entries, 1000000);
+} my_map SEC(".maps");
+
+/* kprobe is NOT a stable ABI. If kernel internals change this bpf+kprobe
+ * example will no longer be meaningful
+ */
+SEC("kprobe/kmem_cache_free")
+int bpf_prog1(struct pt_regs *ctx)
+{
+ long ptr = PT_REGS_PARM2(ctx);
+
+ bpf_map_delete_elem(&my_map, &ptr);
+ return 0;
+}
+
+SEC("kretprobe/kmem_cache_alloc_node")
+int bpf_prog2(struct pt_regs *ctx)
+{
+ long ptr = PT_REGS_RC(ctx);
+ long ip = 0;
+
+ /* get ip address of kmem_cache_alloc_node() caller */
+ BPF_KRETPROBE_READ_RET_IP(ip, ctx);
+
+ struct pair v = {
+ .val = bpf_ktime_get_ns(),
+ .ip = ip,
+ };
+
+ bpf_map_update_elem(&my_map, &ptr, &v, BPF_ANY);
+ return 0;
+}
+char _license[] SEC("license") = "GPL";
+u32 _version SEC("version") = LINUX_VERSION_CODE;
+++ /dev/null
-/* Copyright (c) 2015 PLUMgrid, http://plumgrid.com
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of version 2 of the GNU General Public
- * License as published by the Free Software Foundation.
- */
-#include "vmlinux.h"
-#include <linux/version.h>
-#include <bpf/bpf_helpers.h>
-#include <bpf/bpf_tracing.h>
-
-struct pair {
- u64 val;
- u64 ip;
-};
-
-struct {
- __uint(type, BPF_MAP_TYPE_HASH);
- __type(key, long);
- __type(value, struct pair);
- __uint(max_entries, 1000000);
-} my_map SEC(".maps");
-
-/* kprobe is NOT a stable ABI. If kernel internals change this bpf+kprobe
- * example will no longer be meaningful
- */
-SEC("kprobe/kmem_cache_free")
-int bpf_prog1(struct pt_regs *ctx)
-{
- long ptr = PT_REGS_PARM2(ctx);
-
- bpf_map_delete_elem(&my_map, &ptr);
- return 0;
-}
-
-SEC("kretprobe/kmem_cache_alloc_node")
-int bpf_prog2(struct pt_regs *ctx)
-{
- long ptr = PT_REGS_RC(ctx);
- long ip = 0;
-
- /* get ip address of kmem_cache_alloc_node() caller */
- BPF_KRETPROBE_READ_RET_IP(ip, ctx);
-
- struct pair v = {
- .val = bpf_ktime_get_ns(),
- .ip = ip,
- };
-
- bpf_map_update_elem(&my_map, &ptr, &v, BPF_ANY);
- return 0;
-}
-char _license[] SEC("license") = "GPL";
-u32 _version SEC("version") = LINUX_VERSION_CODE;
char filename[256];
int map_fd, j = 0;
- 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");
--- /dev/null
+/* Copyright (c) 2015 PLUMgrid, http://plumgrid.com
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of version 2 of the GNU General Public
+ * License as published by the Free Software Foundation.
+ */
+#include "vmlinux.h"
+#include "syscall_nrs.h"
+#include <linux/version.h>
+#include <uapi/linux/unistd.h>
+#include <bpf/bpf_helpers.h>
+#include <bpf/bpf_tracing.h>
+
+#define __stringify(x) #x
+#define PROG(F) SEC("kprobe/"__stringify(F)) int bpf_func_##F
+
+struct {
+ __uint(type, BPF_MAP_TYPE_PROG_ARRAY);
+ __uint(key_size, sizeof(u32));
+ __uint(value_size, sizeof(u32));
+#ifdef __mips__
+ __uint(max_entries, 6000); /* MIPS n64 syscalls start at 5000 */
+#else
+ __uint(max_entries, 1024);
+#endif
+} progs SEC(".maps");
+
+SEC("kprobe/__seccomp_filter")
+int bpf_prog1(struct pt_regs *ctx)
+{
+ int sc_nr = (int)PT_REGS_PARM1(ctx);
+
+ /* dispatch into next BPF program depending on syscall number */
+ bpf_tail_call(ctx, &progs, sc_nr);
+
+ /* fall through -> unknown syscall */
+ if (sc_nr >= __NR_getuid && sc_nr <= __NR_getsid) {
+ char fmt[] = "syscall=%d (one of get/set uid/pid/gid)\n";
+ bpf_trace_printk(fmt, sizeof(fmt), sc_nr);
+ }
+ return 0;
+}
+
+/* we jump here when syscall number == __NR_write */
+PROG(SYS__NR_write)(struct pt_regs *ctx)
+{
+ struct seccomp_data sd;
+
+ bpf_probe_read_kernel(&sd, sizeof(sd), (void *)PT_REGS_PARM2(ctx));
+ if (sd.args[2] == 512) {
+ char fmt[] = "write(fd=%d, buf=%p, size=%d)\n";
+ bpf_trace_printk(fmt, sizeof(fmt),
+ sd.args[0], sd.args[1], sd.args[2]);
+ }
+ return 0;
+}
+
+PROG(SYS__NR_read)(struct pt_regs *ctx)
+{
+ struct seccomp_data sd;
+
+ bpf_probe_read_kernel(&sd, sizeof(sd), (void *)PT_REGS_PARM2(ctx));
+ if (sd.args[2] > 128 && sd.args[2] <= 1024) {
+ char fmt[] = "read(fd=%d, buf=%p, size=%d)\n";
+ bpf_trace_printk(fmt, sizeof(fmt),
+ sd.args[0], sd.args[1], sd.args[2]);
+ }
+ return 0;
+}
+
+#ifdef __NR_mmap2
+PROG(SYS__NR_mmap2)(struct pt_regs *ctx)
+{
+ char fmt[] = "mmap2\n";
+
+ bpf_trace_printk(fmt, sizeof(fmt));
+ return 0;
+}
+#endif
+
+#ifdef __NR_mmap
+PROG(SYS__NR_mmap)(struct pt_regs *ctx)
+{
+ char fmt[] = "mmap\n";
+
+ bpf_trace_printk(fmt, sizeof(fmt));
+ return 0;
+}
+#endif
+
+char _license[] SEC("license") = "GPL";
+u32 _version SEC("version") = LINUX_VERSION_CODE;
+++ /dev/null
-/* Copyright (c) 2015 PLUMgrid, http://plumgrid.com
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of version 2 of the GNU General Public
- * License as published by the Free Software Foundation.
- */
-#include "vmlinux.h"
-#include "syscall_nrs.h"
-#include <linux/version.h>
-#include <uapi/linux/unistd.h>
-#include <bpf/bpf_helpers.h>
-#include <bpf/bpf_tracing.h>
-
-#define __stringify(x) #x
-#define PROG(F) SEC("kprobe/"__stringify(F)) int bpf_func_##F
-
-struct {
- __uint(type, BPF_MAP_TYPE_PROG_ARRAY);
- __uint(key_size, sizeof(u32));
- __uint(value_size, sizeof(u32));
-#ifdef __mips__
- __uint(max_entries, 6000); /* MIPS n64 syscalls start at 5000 */
-#else
- __uint(max_entries, 1024);
-#endif
-} progs SEC(".maps");
-
-SEC("kprobe/__seccomp_filter")
-int bpf_prog1(struct pt_regs *ctx)
-{
- int sc_nr = (int)PT_REGS_PARM1(ctx);
-
- /* dispatch into next BPF program depending on syscall number */
- bpf_tail_call(ctx, &progs, sc_nr);
-
- /* fall through -> unknown syscall */
- if (sc_nr >= __NR_getuid && sc_nr <= __NR_getsid) {
- char fmt[] = "syscall=%d (one of get/set uid/pid/gid)\n";
- bpf_trace_printk(fmt, sizeof(fmt), sc_nr);
- }
- return 0;
-}
-
-/* we jump here when syscall number == __NR_write */
-PROG(SYS__NR_write)(struct pt_regs *ctx)
-{
- struct seccomp_data sd;
-
- bpf_probe_read_kernel(&sd, sizeof(sd), (void *)PT_REGS_PARM2(ctx));
- if (sd.args[2] == 512) {
- char fmt[] = "write(fd=%d, buf=%p, size=%d)\n";
- bpf_trace_printk(fmt, sizeof(fmt),
- sd.args[0], sd.args[1], sd.args[2]);
- }
- return 0;
-}
-
-PROG(SYS__NR_read)(struct pt_regs *ctx)
-{
- struct seccomp_data sd;
-
- bpf_probe_read_kernel(&sd, sizeof(sd), (void *)PT_REGS_PARM2(ctx));
- if (sd.args[2] > 128 && sd.args[2] <= 1024) {
- char fmt[] = "read(fd=%d, buf=%p, size=%d)\n";
- bpf_trace_printk(fmt, sizeof(fmt),
- sd.args[0], sd.args[1], sd.args[2]);
- }
- return 0;
-}
-
-#ifdef __NR_mmap2
-PROG(SYS__NR_mmap2)(struct pt_regs *ctx)
-{
- char fmt[] = "mmap2\n";
-
- bpf_trace_printk(fmt, sizeof(fmt));
- return 0;
-}
-#endif
-
-#ifdef __NR_mmap
-PROG(SYS__NR_mmap)(struct pt_regs *ctx)
-{
- char fmt[] = "mmap\n";
-
- bpf_trace_printk(fmt, sizeof(fmt));
- return 0;
-}
-#endif
-
-char _license[] SEC("license") = "GPL";
-u32 _version SEC("version") = LINUX_VERSION_CODE;
char filename[256];
FILE *f;
- 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");
--- /dev/null
+#include "vmlinux.h"
+#include <linux/version.h>
+#include <bpf/bpf_helpers.h>
+
+struct {
+ __uint(type, BPF_MAP_TYPE_PERF_EVENT_ARRAY);
+ __uint(key_size, sizeof(int));
+ __uint(value_size, sizeof(u32));
+ __uint(max_entries, 64);
+} counters SEC(".maps");
+
+struct {
+ __uint(type, BPF_MAP_TYPE_HASH);
+ __type(key, int);
+ __type(value, u64);
+ __uint(max_entries, 64);
+} values SEC(".maps");
+
+struct {
+ __uint(type, BPF_MAP_TYPE_HASH);
+ __type(key, int);
+ __type(value, struct bpf_perf_event_value);
+ __uint(max_entries, 64);
+} values2 SEC(".maps");
+
+SEC("kprobe/htab_map_get_next_key")
+int bpf_prog1(struct pt_regs *ctx)
+{
+ u32 key = bpf_get_smp_processor_id();
+ u64 count, *val;
+ s64 error;
+
+ count = bpf_perf_event_read(&counters, key);
+ error = (s64)count;
+ if (error <= -2 && error >= -22)
+ return 0;
+
+ val = bpf_map_lookup_elem(&values, &key);
+ if (val)
+ *val = count;
+ else
+ bpf_map_update_elem(&values, &key, &count, BPF_NOEXIST);
+
+ return 0;
+}
+
+SEC("kprobe/htab_map_lookup_elem")
+int bpf_prog2(struct pt_regs *ctx)
+{
+ u32 key = bpf_get_smp_processor_id();
+ struct bpf_perf_event_value *val, buf;
+ int error;
+
+ error = bpf_perf_event_read_value(&counters, key, &buf, sizeof(buf));
+ if (error)
+ return 0;
+
+ val = bpf_map_lookup_elem(&values2, &key);
+ if (val)
+ *val = buf;
+ else
+ bpf_map_update_elem(&values2, &key, &buf, BPF_NOEXIST);
+
+ return 0;
+}
+
+char _license[] SEC("license") = "GPL";
+u32 _version SEC("version") = LINUX_VERSION_CODE;
+++ /dev/null
-#include "vmlinux.h"
-#include <linux/version.h>
-#include <bpf/bpf_helpers.h>
-
-struct {
- __uint(type, BPF_MAP_TYPE_PERF_EVENT_ARRAY);
- __uint(key_size, sizeof(int));
- __uint(value_size, sizeof(u32));
- __uint(max_entries, 64);
-} counters SEC(".maps");
-
-struct {
- __uint(type, BPF_MAP_TYPE_HASH);
- __type(key, int);
- __type(value, u64);
- __uint(max_entries, 64);
-} values SEC(".maps");
-
-struct {
- __uint(type, BPF_MAP_TYPE_HASH);
- __type(key, int);
- __type(value, struct bpf_perf_event_value);
- __uint(max_entries, 64);
-} values2 SEC(".maps");
-
-SEC("kprobe/htab_map_get_next_key")
-int bpf_prog1(struct pt_regs *ctx)
-{
- u32 key = bpf_get_smp_processor_id();
- u64 count, *val;
- s64 error;
-
- count = bpf_perf_event_read(&counters, key);
- error = (s64)count;
- if (error <= -2 && error >= -22)
- return 0;
-
- val = bpf_map_lookup_elem(&values, &key);
- if (val)
- *val = count;
- else
- bpf_map_update_elem(&values, &key, &count, BPF_NOEXIST);
-
- return 0;
-}
-
-SEC("kprobe/htab_map_lookup_elem")
-int bpf_prog2(struct pt_regs *ctx)
-{
- u32 key = bpf_get_smp_processor_id();
- struct bpf_perf_event_value *val, buf;
- int error;
-
- error = bpf_perf_event_read_value(&counters, key, &buf, sizeof(buf));
- if (error)
- return 0;
-
- val = bpf_map_lookup_elem(&values2, &key);
- if (val)
- *val = buf;
- else
- bpf_map_update_elem(&values2, &key, &buf, BPF_NOEXIST);
-
- return 0;
-}
-
-char _license[] SEC("license") = "GPL";
-u32 _version SEC("version") = LINUX_VERSION_CODE;
char filename[256];
int i = 0;
- 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");
--- /dev/null
+#include "vmlinux.h"
+#include <linux/version.h>
+#include <bpf/bpf_helpers.h>
+
+SEC("kprobe/open_ctree")
+int bpf_prog1(struct pt_regs *ctx)
+{
+ unsigned long rc = -12;
+
+ bpf_override_return(ctx, rc);
+ return 0;
+}
+
+char _license[] SEC("license") = "GPL";
+u32 _version SEC("version") = LINUX_VERSION_CODE;
+++ /dev/null
-#include "vmlinux.h"
-#include <linux/version.h>
-#include <bpf/bpf_helpers.h>
-
-SEC("kprobe/open_ctree")
-int bpf_prog1(struct pt_regs *ctx)
-{
- unsigned long rc = -12;
-
- bpf_override_return(ctx, rc);
- return 0;
-}
-
-char _license[] SEC("license") = "GPL";
-u32 _version SEC("version") = LINUX_VERSION_CODE;
return 0;
}
- 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");
projects / platform / kernel / linux-rpi.git / commitdiff