Merge commit 'perf/core' into perf/hw-breakpoint
Conflicts:
kernel/Makefile
kernel/trace/Makefile
kernel/trace/trace.h
samples/Makefile
Merge reason: We need to be uptodate with the perf events development
branch because we plan to rewrite the breakpoints API on top of
perf events.
diff --git a/kernel/trace/trace.h b/kernel/trace/trace.h
index ea7e0bc..91c3d0e 100644
--- a/kernel/trace/trace.h
+++ b/kernel/trace/trace.h
@@ -7,10 +7,10 @@
#include <linux/clocksource.h>
#include <linux/ring_buffer.h>
#include <linux/mmiotrace.h>
+#include <linux/tracepoint.h>
#include <linux/ftrace.h>
#include <trace/boot.h>
#include <linux/kmemtrace.h>
-#include <trace/power.h>
#include <linux/trace_seq.h>
#include <linux/ftrace_event.h>
@@ -40,164 +40,60 @@
TRACE_HW_BRANCHES,
TRACE_KMEM_ALLOC,
TRACE_KMEM_FREE,
- TRACE_POWER,
TRACE_BLK,
TRACE_KSYM,
__TRACE_LAST_TYPE,
};
-/*
- * Function trace entry - function address and parent function addres:
- */
-struct ftrace_entry {
- struct trace_entry ent;
- unsigned long ip;
- unsigned long parent_ip;
-};
-
-/* Function call entry */
-struct ftrace_graph_ent_entry {
- struct trace_entry ent;
- struct ftrace_graph_ent graph_ent;
-};
-
-/* Function return entry */
-struct ftrace_graph_ret_entry {
- struct trace_entry ent;
- struct ftrace_graph_ret ret;
-};
-extern struct tracer boot_tracer;
-
-/*
- * Context switch trace entry - which task (and prio) we switched from/to:
- */
-struct ctx_switch_entry {
- struct trace_entry ent;
- unsigned int prev_pid;
- unsigned char prev_prio;
- unsigned char prev_state;
- unsigned int next_pid;
- unsigned char next_prio;
- unsigned char next_state;
- unsigned int next_cpu;
-};
-
-/*
- * Special (free-form) trace entry:
- */
-struct special_entry {
- struct trace_entry ent;
- unsigned long arg1;
- unsigned long arg2;
- unsigned long arg3;
-};
-
-/*
- * Stack-trace entry:
- */
-
-#define FTRACE_STACK_ENTRIES 8
-
-struct stack_entry {
- struct trace_entry ent;
- unsigned long caller[FTRACE_STACK_ENTRIES];
-};
-
-struct userstack_entry {
- struct trace_entry ent;
- unsigned long caller[FTRACE_STACK_ENTRIES];
-};
-
-/*
- * trace_printk entry:
- */
-struct bprint_entry {
- struct trace_entry ent;
- unsigned long ip;
- const char *fmt;
- u32 buf[];
-};
-
-struct print_entry {
- struct trace_entry ent;
- unsigned long ip;
- char buf[];
-};
-
-#define TRACE_OLD_SIZE 88
-
-struct trace_field_cont {
- unsigned char type;
- /* Temporary till we get rid of this completely */
- char buf[TRACE_OLD_SIZE - 1];
-};
-
-struct trace_mmiotrace_rw {
- struct trace_entry ent;
- struct mmiotrace_rw rw;
-};
-
-struct trace_mmiotrace_map {
- struct trace_entry ent;
- struct mmiotrace_map map;
-};
-
-struct trace_boot_call {
- struct trace_entry ent;
- struct boot_trace_call boot_call;
-};
-
-struct trace_boot_ret {
- struct trace_entry ent;
- struct boot_trace_ret boot_ret;
-};
-
-#define TRACE_FUNC_SIZE 30
-#define TRACE_FILE_SIZE 20
-struct trace_branch {
- struct trace_entry ent;
- unsigned line;
- char func[TRACE_FUNC_SIZE+1];
- char file[TRACE_FILE_SIZE+1];
- char correct;
-};
-
-struct hw_branch_entry {
- struct trace_entry ent;
- u64 from;
- u64 to;
-};
-
-struct trace_power {
- struct trace_entry ent;
- struct power_trace state_data;
-};
-
enum kmemtrace_type_id {
KMEMTRACE_TYPE_KMALLOC = 0, /* kmalloc() or kfree(). */
KMEMTRACE_TYPE_CACHE, /* kmem_cache_*(). */
KMEMTRACE_TYPE_PAGES, /* __get_free_pages() and friends. */
};
-struct kmemtrace_alloc_entry {
- struct trace_entry ent;
- enum kmemtrace_type_id type_id;
- unsigned long call_site;
- const void *ptr;
- size_t bytes_req;
- size_t bytes_alloc;
- gfp_t gfp_flags;
- int node;
-};
+extern struct tracer boot_tracer;
-struct kmemtrace_free_entry {
- struct trace_entry ent;
- enum kmemtrace_type_id type_id;
- unsigned long call_site;
- const void *ptr;
-};
+#undef __field
+#define __field(type, item) type item;
+#undef __field_struct
+#define __field_struct(type, item) __field(type, item)
+
+#undef __field_desc
+#define __field_desc(type, container, item)
+
+#undef __array
+#define __array(type, item, size) type item[size];
+
+#undef __array_desc
+#define __array_desc(type, container, item, size)
+
+#undef __dynamic_array
+#define __dynamic_array(type, item) type item[];
+
+#undef F_STRUCT
+#define F_STRUCT(args...) args
+
+#undef FTRACE_ENTRY
+#define FTRACE_ENTRY(name, struct_name, id, tstruct, print) \
+ struct struct_name { \
+ struct trace_entry ent; \
+ tstruct \
+ }
+
+#undef TP_ARGS
+#define TP_ARGS(args...) args
+
+#undef FTRACE_ENTRY_DUP
+#define FTRACE_ENTRY_DUP(name, name_struct, id, tstruct, printk)
+
+#include "trace_entries.h"
+
+/*
+ * syscalls are special, and need special handling, this is why
+ * they are not included in trace_entries.h
+ */
struct syscall_trace_enter {
struct trace_entry ent;
int nr;
@@ -210,23 +106,12 @@
unsigned long ret;
};
-#define KSYM_SELFTEST_ENTRY "ksym_selftest_dummy"
-extern int process_new_ksym_entry(char *ksymname, int op, unsigned long addr);
-
-struct ksym_trace_entry {
- struct trace_entry ent;
- unsigned long ip;
- unsigned char type;
- char ksym_name[KSYM_NAME_LEN];
- char cmd[TASK_COMM_LEN];
-};
-
/*
* trace_flag_type is an enumeration that holds different
* states when a trace occurs. These are:
* IRQS_OFF - interrupts were disabled
* IRQS_NOSUPPORT - arch does not support irqs_disabled_flags
- * NEED_RESCED - reschedule is requested
+ * NEED_RESCHED - reschedule is requested
* HARDIRQ - inside an interrupt handler
* SOFTIRQ - inside a softirq handler
*/
@@ -325,7 +210,6 @@
IF_ASSIGN(var, ent, struct ftrace_graph_ret_entry, \
TRACE_GRAPH_RET); \
IF_ASSIGN(var, ent, struct hw_branch_entry, TRACE_HW_BRANCHES);\
- IF_ASSIGN(var, ent, struct trace_power, TRACE_POWER); \
IF_ASSIGN(var, ent, struct kmemtrace_alloc_entry, \
TRACE_KMEM_ALLOC); \
IF_ASSIGN(var, ent, struct kmemtrace_free_entry, \
@@ -406,7 +290,6 @@
struct tracer *next;
int print_max;
struct tracer_flags *flags;
- struct tracer_stat *stats;
};
@@ -485,6 +368,10 @@
void tracing_start_sched_switch_record(void);
int register_tracer(struct tracer *type);
void unregister_tracer(struct tracer *type);
+int is_tracing_stopped(void);
+
+#define KSYM_SELFTEST_ENTRY "ksym_selftest_dummy"
+extern int process_new_ksym_entry(char *ksymname, int op, unsigned long addr);
extern unsigned long nsecs_to_usecs(unsigned long nsecs);
@@ -525,20 +412,6 @@
extern cycle_t ftrace_now(int cpu);
-#ifdef CONFIG_CONTEXT_SWITCH_TRACER
-typedef void
-(*tracer_switch_func_t)(void *private,
- void *__rq,
- struct task_struct *prev,
- struct task_struct *next);
-
-struct tracer_switch_ops {
- tracer_switch_func_t func;
- void *private;
- struct tracer_switch_ops *next;
-};
-#endif /* CONFIG_CONTEXT_SWITCH_TRACER */
-
extern void trace_find_cmdline(int pid, char comm[]);
#ifdef CONFIG_DYNAMIC_FTRACE
@@ -621,10 +494,6 @@
return 0;
}
#else
-static inline int ftrace_trace_addr(unsigned long addr)
-{
- return 1;
-}
static inline int ftrace_graph_addr(unsigned long addr)
{
return 1;
@@ -638,12 +507,12 @@
}
#endif /* CONFIG_FUNCTION_GRAPH_TRACER */
-extern struct pid *ftrace_pid_trace;
+extern struct list_head ftrace_pids;
#ifdef CONFIG_FUNCTION_TRACER
static inline int ftrace_trace_task(struct task_struct *task)
{
- if (!ftrace_pid_trace)
+ if (list_empty(&ftrace_pids))
return 1;
return test_tsk_trace_trace(task);
@@ -656,6 +525,41 @@
#endif
/*
+ * struct trace_parser - servers for reading the user input separated by spaces
+ * @cont: set if the input is not complete - no final space char was found
+ * @buffer: holds the parsed user input
+ * @idx: user input lenght
+ * @size: buffer size
+ */
+struct trace_parser {
+ bool cont;
+ char *buffer;
+ unsigned idx;
+ unsigned size;
+};
+
+static inline bool trace_parser_loaded(struct trace_parser *parser)
+{
+ return (parser->idx != 0);
+}
+
+static inline bool trace_parser_cont(struct trace_parser *parser)
+{
+ return parser->cont;
+}
+
+static inline void trace_parser_clear(struct trace_parser *parser)
+{
+ parser->cont = false;
+ parser->idx = 0;
+}
+
+extern int trace_parser_get_init(struct trace_parser *parser, int size);
+extern void trace_parser_put(struct trace_parser *parser);
+extern int trace_get_user(struct trace_parser *parser, const char __user *ubuf,
+ size_t cnt, loff_t *ppos);
+
+/*
* trace_iterator_flags is an enumeration that defines bit
* positions into trace_flags that controls the output.
*
@@ -790,7 +694,6 @@
int n_preds;
struct filter_pred **preds;
char *filter_string;
- bool no_reset;
};
struct event_subsystem {
@@ -802,22 +705,40 @@
};
struct filter_pred;
+struct regex;
typedef int (*filter_pred_fn_t) (struct filter_pred *pred, void *event,
int val1, int val2);
-struct filter_pred {
- filter_pred_fn_t fn;
- u64 val;
- char str_val[MAX_FILTER_STR_VAL];
- int str_len;
- char *field_name;
- int offset;
- int not;
- int op;
- int pop_n;
+typedef int (*regex_match_func)(char *str, struct regex *r, int len);
+
+enum regex_type {
+ MATCH_FULL = 0,
+ MATCH_FRONT_ONLY,
+ MATCH_MIDDLE_ONLY,
+ MATCH_END_ONLY,
};
+struct regex {
+ char pattern[MAX_FILTER_STR_VAL];
+ int len;
+ int field_len;
+ regex_match_func match;
+};
+
+struct filter_pred {
+ filter_pred_fn_t fn;
+ u64 val;
+ struct regex regex;
+ char *field_name;
+ int offset;
+ int not;
+ int op;
+ int pop_n;
+};
+
+extern enum regex_type
+filter_parse_regex(char *buff, int len, char **search, int *not);
extern void print_event_filter(struct ftrace_event_call *call,
struct trace_seq *s);
extern int apply_event_filter(struct ftrace_event_call *call,
@@ -833,7 +754,8 @@
struct ring_buffer *buffer,
struct ring_buffer_event *event)
{
- if (unlikely(call->filter_active) && !filter_match_preds(call, rec)) {
+ if (unlikely(call->filter_active) &&
+ !filter_match_preds(call->filter, rec)) {
ring_buffer_discard_commit(buffer, event);
return 1;
}
@@ -841,58 +763,18 @@
return 0;
}
-#define DEFINE_COMPARISON_PRED(type) \
-static int filter_pred_##type(struct filter_pred *pred, void *event, \
- int val1, int val2) \
-{ \
- type *addr = (type *)(event + pred->offset); \
- type val = (type)pred->val; \
- int match = 0; \
- \
- switch (pred->op) { \
- case OP_LT: \
- match = (*addr < val); \
- break; \
- case OP_LE: \
- match = (*addr <= val); \
- break; \
- case OP_GT: \
- match = (*addr > val); \
- break; \
- case OP_GE: \
- match = (*addr >= val); \
- break; \
- default: \
- break; \
- } \
- \
- return match; \
-}
-
-#define DEFINE_EQUALITY_PRED(size) \
-static int filter_pred_##size(struct filter_pred *pred, void *event, \
- int val1, int val2) \
-{ \
- u##size *addr = (u##size *)(event + pred->offset); \
- u##size val = (u##size)pred->val; \
- int match; \
- \
- match = (val == *addr) ^ pred->not; \
- \
- return match; \
-}
-
extern struct mutex event_mutex;
extern struct list_head ftrace_events;
extern const char *__start___trace_bprintk_fmt[];
extern const char *__stop___trace_bprintk_fmt[];
-#undef TRACE_EVENT_FORMAT
-#define TRACE_EVENT_FORMAT(call, proto, args, fmt, tstruct, tpfmt) \
+#undef FTRACE_ENTRY
+#define FTRACE_ENTRY(call, struct_name, id, tstruct, print) \
extern struct ftrace_event_call event_##call;
-#undef TRACE_EVENT_FORMAT_NOFILTER
-#define TRACE_EVENT_FORMAT_NOFILTER(call, proto, args, fmt, tstruct, tpfmt)
-#include "trace_event_types.h"
+#undef FTRACE_ENTRY_DUP
+#define FTRACE_ENTRY_DUP(call, struct_name, id, tstruct, print) \
+ FTRACE_ENTRY(call, struct_name, id, PARAMS(tstruct), PARAMS(print))
+#include "trace_entries.h"
#endif /* _LINUX_KERNEL_TRACE_H */