4 files changed, 153 insertions, 10 deletions

diff --git a/include/linux/bpf.h b/include/linux/bpf.h
index bbfceb756452..c2e21113ecc0 100644
--- a/include/linux/bpf.h
+++ b/include/linux/bpf.h
@@ -113,8 +113,6 @@ struct bpf_prog_type_list {
         enum bpf_prog_type type;
 };
 
-void bpf_register_prog_type(struct bpf_prog_type_list *tl);
-
 struct bpf_prog;
 
 struct bpf_prog_aux {
@@ -129,11 +127,25 @@ struct bpf_prog_aux {
 };
 
 #ifdef CONFIG_BPF_SYSCALL
+void bpf_register_prog_type(struct bpf_prog_type_list *tl);
+
 void bpf_prog_put(struct bpf_prog *prog);
+struct bpf_prog *bpf_prog_get(u32 ufd);
 #else
-static inline void bpf_prog_put(struct bpf_prog *prog) {}
+static inline void bpf_register_prog_type(struct bpf_prog_type_list *tl)
+{
+}
+
+static inline struct bpf_prog *bpf_prog_get(u32 ufd)
+{
+        return ERR_PTR(-EOPNOTSUPP);
+}
+
+static inline void bpf_prog_put(struct bpf_prog *prog)
+{
+}
 #endif
-struct bpf_prog *bpf_prog_get(u32 ufd);
+
 /* verify correctness of eBPF program */
 int bpf_check(struct bpf_prog *fp, union bpf_attr *attr);
 
diff --git a/include/linux/ftrace_event.h b/include/linux/ftrace_event.h
index 112cf49d9576..46e83c2156c6 100644
--- a/include/linux/ftrace_event.h
+++ b/include/linux/ftrace_event.h
@@ -13,6 +13,7 @@ struct trace_array;
 struct trace_buffer;
 struct tracer;
 struct dentry;
+struct bpf_prog;
 
 struct trace_print_flags {
         unsigned long           mask;
@@ -252,6 +253,7 @@ enum {
         TRACE_EVENT_FL_WAS_ENABLED_BIT,
         TRACE_EVENT_FL_USE_CALL_FILTER_BIT,
         TRACE_EVENT_FL_TRACEPOINT_BIT,
+        TRACE_EVENT_FL_KPROBE_BIT,
 };
 
 /*
@@ -265,6 +267,7 @@ enum {
  *                     it is best to clear the buffers that used it).
  *  USE_CALL_FILTER - For ftrace internal events, don't use file filter
  *  TRACEPOINT    - Event is a tracepoint
+ *  KPROBE        - Event is a kprobe
  */
 enum {
         TRACE_EVENT_FL_FILTERED         = (1 << TRACE_EVENT_FL_FILTERED_BIT),
@@ -274,6 +277,7 @@ enum {
         TRACE_EVENT_FL_WAS_ENABLED      = (1 << TRACE_EVENT_FL_WAS_ENABLED_BIT),
         TRACE_EVENT_FL_USE_CALL_FILTER  = (1 << TRACE_EVENT_FL_USE_CALL_FILTER_BIT),
         TRACE_EVENT_FL_TRACEPOINT       = (1 << TRACE_EVENT_FL_TRACEPOINT_BIT),
+        TRACE_EVENT_FL_KPROBE           = (1 << TRACE_EVENT_FL_KPROBE_BIT),
 };
 
 struct ftrace_event_call {
@@ -303,6 +307,7 @@ struct ftrace_event_call {
 #ifdef CONFIG_PERF_EVENTS
         int                             perf_refcount;
         struct hlist_head __percpu      *perf_events;
+        struct bpf_prog                 *prog;
 
         int     (*perf_perm)(struct ftrace_event_call *,
                              struct perf_event *);
@@ -548,6 +553,15 @@ event_trigger_unlock_commit_regs(struct ftrace_event_file *file,
                 event_triggers_post_call(file, tt);
 }
 
+#ifdef CONFIG_BPF_SYSCALL
+unsigned int trace_call_bpf(struct bpf_prog *prog, void *ctx);
+#else
+static inline unsigned int trace_call_bpf(struct bpf_prog *prog, void *ctx)
+{
+        return 1;
+}
+#endif
+
 enum {
         FILTER_OTHER = 0,
         FILTER_STATIC_STRING,
diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h
index 2b621982938d..61992cf2e977 100644
--- a/include/linux/perf_event.h
+++ b/include/linux/perf_event.h
@@ -53,6 +53,7 @@ struct perf_guest_info_callbacks {
 #include <linux/sysfs.h>
 #include <linux/perf_regs.h>
 #include <linux/workqueue.h>
+#include <linux/cgroup.h>
 #include <asm/local.h>
 
 struct perf_callchain_entry {
@@ -118,10 +119,19 @@ struct hw_perf_event {
                         struct hrtimer  hrtimer;
                 };
                 struct { /* tracepoint */
-                        struct task_struct      *tp_target;
                         /* for tp_event->class */
                         struct list_head        tp_list;
                 };
+                struct { /* intel_cqm */
+                        int                     cqm_state;
+                        int                     cqm_rmid;
+                        struct list_head        cqm_events_entry;
+                        struct list_head        cqm_groups_entry;
+                        struct list_head        cqm_group_entry;
+                };
+                struct { /* itrace */
+                        int                     itrace_started;
+                };
 #ifdef CONFIG_HAVE_HW_BREAKPOINT
                 struct { /* breakpoint */
                         /*
@@ -129,12 +139,12 @@ struct hw_perf_event {
                          * problem hw_breakpoint has with context
                          * creation and event initalization.
                          */
-                        struct task_struct              *bp_target;
                         struct arch_hw_breakpoint       info;
                         struct list_head                bp_list;
                 };
 #endif
         };
+        struct task_struct              *target;
         int                             state;
         local64_t                       prev_count;
         u64                             sample_period;
@@ -166,6 +176,11 @@ struct perf_event;
  * pmu::capabilities flags
  */
 #define PERF_PMU_CAP_NO_INTERRUPT               0x01
+#define PERF_PMU_CAP_NO_NMI                     0x02
+#define PERF_PMU_CAP_AUX_NO_SG                  0x04
+#define PERF_PMU_CAP_AUX_SW_DOUBLEBUF           0x08
+#define PERF_PMU_CAP_EXCLUSIVE                  0x10
+#define PERF_PMU_CAP_ITRACE                     0x20
 
 /**
  * struct pmu - generic performance monitoring unit
@@ -186,6 +201,7 @@ struct pmu {
 
         int * __percpu                  pmu_disable_count;
         struct perf_cpu_context * __percpu pmu_cpu_context;
+        atomic_t                        exclusive_cnt; /* < 0: cpu; > 0: tsk */
         int                             task_ctx_nr;
         int                             hrtimer_interval_ms;
 
@@ -262,9 +278,32 @@ struct pmu {
         int (*event_idx)                (struct perf_event *event); /*optional */
 
         /*
-         * flush branch stack on context-switches (needed in cpu-wide mode)
+         * context-switches callback
+         */
+        void (*sched_task)              (struct perf_event_context *ctx,
+                                        bool sched_in);
+        /*