Merge branch 'perf'

Signed-off-by: Avi Kivity <avi@redhat.com>

6 files changed, 63 insertions, 50 deletions

diff --git a/include/linux/ftrace.h b/include/linux/ftrace.h
index 01e6adea07e..cc12b3c556b 100644
--- a/include/linux/ftrace.h
+++ b/include/linux/ftrace.h
@@ -504,18 +504,6 @@ extern int ftrace_dump_on_oops;
 #define INIT_TRACE_RECURSION
 #endif
 
-#ifdef CONFIG_HW_BRANCH_TRACER
-
-void trace_hw_branch(u64 from, u64 to);
-void trace_hw_branch_oops(void);
-
-#else /* CONFIG_HW_BRANCH_TRACER */
-
-static inline void trace_hw_branch(u64 from, u64 to) {}
-static inline void trace_hw_branch_oops(void) {}
-
-#endif /* CONFIG_HW_BRANCH_TRACER */
-
 #ifdef CONFIG_FTRACE_SYSCALLS
 
 unsigned long arch_syscall_addr(int nr);
diff --git a/include/linux/mm.h b/include/linux/mm.h
index 462acaf36f3..fb19bb92b80 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -19,7 +19,6 @@ struct anon_vma;
 struct file_ra_state;
 struct user_struct;
 struct writeback_control;
-struct rlimit;
 
 #ifndef CONFIG_DISCONTIGMEM          /* Don't use mapnrs, do it properly */
 extern unsigned long max_mapnr;
@@ -1449,9 +1448,6 @@ int vmemmap_populate_basepages(struct page *start_page,
 int vmemmap_populate(struct page *start_page, unsigned long pages, int node);
 void vmemmap_populate_print_last(void);
 
-extern int account_locked_memory(struct mm_struct *mm, struct rlimit *rlim,
-                                 size_t size);
-extern void refund_locked_memory(struct mm_struct *mm, size_t size);
 
 enum mf_flags {
         MF_COUNT_INCREASED = 1 << 0,
diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h
index c8e37544040..24de5f181a4 100644
--- a/include/linux/perf_event.h
+++ b/include/linux/perf_event.h
@@ -203,8 +203,9 @@ struct perf_event_attr {
                                 enable_on_exec :  1, /* next exec enables     */
                                 task           :  1, /* trace fork/exit       */
                                 watermark      :  1, /* wakeup_watermark      */
+                                precise        :  1, /* OoO invariant counter */
 
-                                __reserved_1   : 49;
+                                __reserved_1   : 48;
 
         union {
                 __u32           wakeup_events;    /* wakeup every n events */
@@ -287,11 +288,19 @@ struct perf_event_mmap_page {
         __u64   data_tail;              /* user-space written tail */
 };
 
-#define PERF_RECORD_MISC_CPUMODE_MASK           (3 << 0)
+#define PERF_RECORD_MISC_CPUMODE_MASK           (7 << 0)
 #define PERF_RECORD_MISC_CPUMODE_UNKNOWN        (0 << 0)
 #define PERF_RECORD_MISC_KERNEL                 (1 << 0)
 #define PERF_RECORD_MISC_USER                   (2 << 0)
 #define PERF_RECORD_MISC_HYPERVISOR             (3 << 0)
+#define PERF_RECORD_MISC_GUEST_KERNEL           (4 << 0)
+#define PERF_RECORD_MISC_GUEST_USER             (5 << 0)
+
+#define PERF_RECORD_MISC_EXACT                  (1 << 14)
+/*
+ * Reserve the last bit to indicate some extended misc field
+ */
+#define PERF_RECORD_MISC_EXT_RESERVED           (1 << 15)
 
 struct perf_event_header {
         __u32   type;
@@ -439,6 +448,12 @@ enum perf_callchain_context {
 # include <asm/perf_event.h>
 #endif
 
+struct perf_guest_info_callbacks {
+        int (*is_in_guest) (void);
+        int (*is_user_mode) (void);
+        unsigned long (*get_guest_ip) (void);
+};
+
 #ifdef CONFIG_HAVE_HW_BREAKPOINT
 #include <asm/hw_breakpoint.h>
 #endif
@@ -468,6 +483,17 @@ struct perf_raw_record {
         void                            *data;
 };
 
+struct perf_branch_entry {
+        __u64                           from;
+        __u64                           to;
+        __u64                           flags;
+};
+
+struct perf_branch_stack {
+        __u64                           nr;
+        struct perf_branch_entry        entries[0];
+};
+
 struct task_struct;
 
 /**
@@ -571,6 +597,14 @@ enum perf_group_flag {
         PERF_GROUP_SOFTWARE = 0x1,
 };
 
+#define SWEVENT_HLIST_BITS      8
+#define SWEVENT_HLIST_SIZE      (1 << SWEVENT_HLIST_BITS)
+
+struct swevent_hlist {
+        struct hlist_head       heads[SWEVENT_HLIST_SIZE];
+        struct rcu_head         rcu_head;
+};
+
 /**
  * struct perf_event - performance event kernel representation:
  */
@@ -579,6 +613,7 @@ struct perf_event {
         struct list_head                group_entry;
         struct list_head                event_entry;
         struct list_head                sibling_list;
+        struct hlist_node               hlist_entry;
         int                             nr_siblings;
         int                             group_flags;
         struct perf_event               *group_leader;
@@ -726,6 +761,9 @@ struct perf_cpu_context {
         int                             active_oncpu;
         int                             max_pertask;
         int                             exclusive;
+        struct swevent_hlist            *swevent_hlist;
+        struct mutex                    hlist_mutex;
+        int                             hlist_refcount;
 
         /*
          * Recursion avoidance:
@@ -902,6 +940,12 @@ static inline void perf_event_mmap(struct vm_area_struct *vma)
                 __perf_event_mmap(vma);
 }
 
+extern struct perf_guest_info_callbacks *perf_guest_cbs;
+extern int perf_register_guest_info_callbacks(
+                struct perf_guest_info_callbacks *);
+extern int perf_unregister_guest_info_callbacks(
+                struct perf_guest_info_callbacks *);
+
 extern void perf_event_comm(struct task_struct *tsk);
 extern void perf_event_fork(struct task_struct *tsk);
 
@@ -971,6 +1015,11 @@ perf_sw_event(u32 event_id, u64 nr, int nmi,
 static inline void
 perf_bp_event(struct perf_event *event, void *data)                     { }
 
+static inline int perf_register_guest_info_callbacks
+(struct perf_guest_info_callbacks *) {return 0; }
+static inline int perf_unregister_guest_info_callbacks
+(struct perf_guest_info_callbacks *) {return 0; }
+
 static inline void perf_event_mmap(struct vm_area_struct *vma)          { }
 static inline void perf_event_comm(struct task_struct *tsk)             { }
 static inline void perf_event_fork(struct task_struct *tsk)             { }
diff --git a/include/linux/ptrace.h b/include/linux/ptrace.h
index e1fb6072997..4272521e29e 100644
--- a/include/linux/ptrace.h
+++ b/include/linux/ptrace.h
@@ -345,18 +345,6 @@ static inline void user_single_step_siginfo(struct task_struct *tsk,
 #define arch_ptrace_stop(code, info)            do { } while (0)
 #endif
 
-#ifndef arch_ptrace_untrace
-/*
- * Do machine-specific work before untracing child.
- *
- * This is called for a normal detach as well as from ptrace_exit()
- * when the tracing task dies.
- *
- * Called with write_lock(&tasklist_lock) held.
- */
-#define arch_ptrace_untrace(task)               do { } while (0)
-#endif
-
 extern int task_current_syscall(struct task_struct *target, long *callno,
                                 unsigned long args[6], unsigned int maxargs,
                                 unsigned long *sp, unsigned long *pc);
diff --git a/include/linux/sched.h b/include/linux/sched.h
index dad7f668ebf..e0447c64af6 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -99,7 +99,6 @@ struct futex_pi_state;
 struct robust_list_head;
 struct bio_list;
 struct fs_struct;
-struct bts_context;
 struct perf_event_context;
 
 /*
@@ -1272,12 +1271,6 @@ struct task_struct {
         struct list_head ptraced;
         struct list_head ptrace_entry;
 
-        /*
-         * This is the tracer handle for the ptrace BTS extension.
-         * This field actually belongs to the ptracer task.
-         */
-        struct bts_context *bts;
-
         /* PID/PID hash table linkage. */
         struct pid_link pids[PIDTYPE_MAX];
         struct list_head thread_group;
@@ -2123,10 +2116,8 @@ extern void set_task_comm(struct task_struct *tsk, char *from);
 extern char *get_task_comm(char *to, struct task_struct *tsk);
 
 #ifdef CONFIG_SMP
-extern void wait_task_context_switch(struct task_struct *p);
 extern unsigned long wait_task_inactive(struct task_struct *, long match_state);
 #else
-static inline void wait_task_context_switch(struct task_struct *p) {}
 static inline unsigned long wait_task_inactive(struct task_struct *p,
                                                long match_state)
 {
diff --git a/include/trace/ftrace.h b/include/trace/ftrace.h
index ea6f9d4a20e..882c64832ff 100644
--- a/include/trace/ftrace.h
+++ b/include/trace/ftrace.h
@@ -758,13 +758,12 @@ __attribute__((section("_ftrace_events"))) event_##call = {		\
 #define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print)  \
 static notrace void                                                     \
 perf_trace_templ_##call(struct ftrace_event_call *event_call,           \
-                            proto)                                      \
+                        struct pt_regs *__regs, proto)                  \
 {                                                                       \
         struct ftrace_data_offsets_##call __maybe_unused __data_offsets;\
         struct ftrace_raw_##call *entry;                                \
         u64 __addr = 0, __count = 1;                                    \
         unsigned long irq_flags;                                        \
-        struct pt_regs *__regs;                                         \
         int __entry_size;                                               \
         int __data_size;                                                \
         int rctx;                                                       \
@@ -785,20 +784,22 @@ perf_trace_templ_##call(struct ftrace_event_call *event_call,		\
                                                                         \
         { assign; }                                                     \
                                                                         \
-        __regs = &__get_cpu_var(perf_trace_regs);                       \
-        perf_fetch_caller_regs(__regs, 2);                              \
-                                                                        \
         perf_trace_buf_submit(entry, __entry_size, rctx, __addr,        \
                                __count, irq_flags, __regs);             \
 }
 
 #undef DEFINE_EVENT
-#define DEFINE_EVENT(template, call, proto, args)               \
-static notrace void perf_trace_##call(proto)                    \
-{                                                               \
-        struct ftrace_event_call *event_call = &event_##call;   \
-                                                                \
-        perf_trace_templ_##template(event_call, args);          \
+#define DEFINE_EVENT(template, call, proto, args)                       \
+static notrace void perf_trace_##call(proto)                            \
+{                                                                       \
+        struct ftrace_event_call *event_call = &event_##call;           \
+        struct pt_regs *__regs = &get_cpu_var(perf_trace_regs);         \
+                                                                        \
+        perf_fetch_caller_regs(__regs, 1);                              \
+                                                                        \
+        perf_trace_templ_##template(event_call, __regs, args);          \
+                                                                        \
+        put_cpu_var(perf_trace_regs);                                   \
 }
 
 #undef DEFINE_EVENT_PRINT