TRACE_SPECIAL,
TRACE_MMIO_RW,
TRACE_MMIO_MAP,
- TRACE_UNLIKELY,
+ TRACE_BRANCH,
TRACE_BOOT_CALL,
TRACE_BOOT_RET,
- TRACE_FN_RET,
+ TRACE_GRAPH_RET,
+ TRACE_GRAPH_ENT,
+ TRACE_USER_STACK,
+ TRACE_HW_BRANCHES,
+ TRACE_POWER,
__TRACE_LAST_TYPE
};
unsigned char flags;
unsigned char preempt_count;
int pid;
+ int tgid;
};
/*
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_ret_entry {
- struct trace_entry ent;
- unsigned long ip;
- unsigned long parent_ip;
- unsigned long long calltime;
- unsigned long long rettime;
+struct ftrace_graph_ret_entry {
+ struct trace_entry ent;
+ struct ftrace_graph_ret ret;
};
extern struct tracer boot_tracer;
unsigned long caller[FTRACE_STACK_ENTRIES];
};
+struct userstack_entry {
+ struct trace_entry ent;
+ unsigned long caller[FTRACE_STACK_ENTRIES];
+};
+
/*
* ftrace_printk entry:
*/
struct print_entry {
struct trace_entry ent;
unsigned long ip;
+ int depth;
char buf[];
};
#define TRACE_FUNC_SIZE 30
#define TRACE_FILE_SIZE 20
-struct trace_unlikely {
+struct trace_branch {
struct trace_entry ent;
unsigned line;
char func[TRACE_FUNC_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;
+};
+
/*
* trace_flag_type is an enumeration that holds different
* states when a trace occurs. These are:
IF_ASSIGN(var, ent, struct ctx_switch_entry, 0); \
IF_ASSIGN(var, ent, struct trace_field_cont, TRACE_CONT); \
IF_ASSIGN(var, ent, struct stack_entry, TRACE_STACK); \
+ IF_ASSIGN(var, ent, struct userstack_entry, TRACE_USER_STACK);\
IF_ASSIGN(var, ent, struct print_entry, TRACE_PRINT); \
IF_ASSIGN(var, ent, struct special_entry, 0); \
IF_ASSIGN(var, ent, struct trace_mmiotrace_rw, \
TRACE_MMIO_MAP); \
IF_ASSIGN(var, ent, struct trace_boot_call, TRACE_BOOT_CALL);\
IF_ASSIGN(var, ent, struct trace_boot_ret, TRACE_BOOT_RET);\
- IF_ASSIGN(var, ent, struct trace_unlikely, TRACE_UNLIKELY); \
- IF_ASSIGN(var, ent, struct ftrace_ret_entry, TRACE_FN_RET);\
+ IF_ASSIGN(var, ent, struct trace_branch, TRACE_BRANCH); \
+ IF_ASSIGN(var, ent, struct ftrace_graph_ent_entry, \
+ TRACE_GRAPH_ENT); \
+ 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); \
__ftrace_bad_type(); \
} while (0)
TRACE_TYPE_UNHANDLED = 2 /* Relay to other output functions */
};
+
+/*
+ * An option specific to a tracer. This is a boolean value.
+ * The bit is the bit index that sets its value on the
+ * flags value in struct tracer_flags.
+ */
+struct tracer_opt {
+ const char *name; /* Will appear on the trace_options file */
+ u32 bit; /* Mask assigned in val field in tracer_flags */
+};
+
+/*
+ * The set of specific options for a tracer. Your tracer
+ * have to set the initial value of the flags val.
+ */
+struct tracer_flags {
+ u32 val;
+ struct tracer_opt *opts;
+};
+
+/* Makes more easy to define a tracer opt */
+#define TRACER_OPT(s, b) .name = #s, .bit = b
+
/*
* A specific tracer, represented by methods that operate on a trace array:
*/
struct tracer {
const char *name;
- void (*init)(struct trace_array *tr);
+ /* Your tracer should raise a warning if init fails */
+ int (*init)(struct trace_array *tr);
void (*reset)(struct trace_array *tr);
void (*start)(struct trace_array *tr);
void (*stop)(struct trace_array *tr);
int (*selftest)(struct tracer *trace,
struct trace_array *tr);
#endif
+ void (*print_header)(struct seq_file *m);
enum print_line_t (*print_line)(struct trace_iterator *iter);
+ /* If you handled the flag setting, return 0 */
+ int (*set_flag)(u32 old_flags, u32 bit, int set);
struct tracer *next;
int print_max;
+ struct tracer_flags *flags;
};
struct trace_seq {
loff_t pos;
long idx;
- cpumask_t started;
+ cpumask_var_t started;
};
int tracing_is_enabled(void);
void trace_wake_up(void);
void tracing_reset(struct trace_array *tr, int cpu);
+void tracing_reset_online_cpus(struct trace_array *tr);
int tracing_open_generic(struct inode *inode, struct file *filp);
struct dentry *tracing_init_dentry(void);
void init_tracer_sysprof_debugfs(struct dentry *d_tracer);
unsigned long ip,
unsigned long parent_ip,
unsigned long flags, int pc);
-void
-trace_function_return(struct ftrace_retfunc *trace);
+
+void trace_graph_return(struct ftrace_graph_ret *trace);
+int trace_graph_entry(struct ftrace_graph_ent *trace);
+void trace_hw_branch(struct trace_array *tr, u64 from, u64 to);
void tracing_start_cmdline_record(void);
void tracing_stop_cmdline_record(void);
struct tracer_switch_ops *next;
};
+char *trace_find_cmdline(int pid);
#endif /* CONFIG_CONTEXT_SWITCH_TRACER */
#ifdef CONFIG_DYNAMIC_FTRACE
struct trace_array *tr);
extern int trace_selftest_startup_sysprof(struct tracer *trace,
struct trace_array *tr);
+extern int trace_selftest_startup_branch(struct tracer *trace,
+ struct trace_array *tr);
#endif /* CONFIG_FTRACE_STARTUP_TEST */
extern void *head_page(struct trace_array_cpu *data);
extern ssize_t trace_seq_to_user(struct trace_seq *s, char __user *ubuf,
size_t cnt);
extern long ns2usecs(cycle_t nsec);
-extern int trace_vprintk(unsigned long ip, const char *fmt, va_list args);
+extern int
+trace_vprintk(unsigned long ip, int depth, const char *fmt, va_list args);
extern unsigned long trace_flags;
/* Standard output formatting function used for function return traces */
-#ifdef CONFIG_FUNCTION_RET_TRACER
-extern enum print_line_t print_return_function(struct trace_iterator *iter);
+#ifdef CONFIG_FUNCTION_GRAPH_TRACER
+extern enum print_line_t print_graph_function(struct trace_iterator *iter);
+
+#ifdef CONFIG_DYNAMIC_FTRACE
+/* TODO: make this variable */
+#define FTRACE_GRAPH_MAX_FUNCS 32
+extern int ftrace_graph_count;
+extern unsigned long ftrace_graph_funcs[FTRACE_GRAPH_MAX_FUNCS];
+
+static inline int ftrace_graph_addr(unsigned long addr)
+{
+ int i;
+
+ if (!ftrace_graph_count || test_tsk_trace_graph(current))
+ return 1;
+
+ for (i = 0; i < ftrace_graph_count; i++) {
+ if (addr == ftrace_graph_funcs[i])
+ return 1;
+ }
+
+ 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;
+}
+#endif /* CONFIG_DYNAMIC_FTRACE */
+
+#else /* CONFIG_FUNCTION_GRAPH_TRACER */
static inline enum print_line_t
-print_return_function(struct trace_iterator *iter)
+print_graph_function(struct trace_iterator *iter)
{
return TRACE_TYPE_UNHANDLED;
}
-#endif
+#endif /* CONFIG_FUNCTION_GRAPH_TRACER */
+
+extern struct pid *ftrace_pid_trace;
+
+static inline int ftrace_trace_task(struct task_struct *task)
+{
+ if (!ftrace_pid_trace)
+ return 1;
+
+ return test_tsk_trace_trace(task);
+}
/*
* trace_iterator_flags is an enumeration that defines bit
TRACE_ITER_SCHED_TREE = 0x200,
TRACE_ITER_PRINTK = 0x400,
TRACE_ITER_PREEMPTONLY = 0x800,
-#ifdef CONFIG_BRANCH_TRACER
- TRACE_ITER_UNLIKELY = 0x1000,
-#endif
+ TRACE_ITER_BRANCH = 0x1000,
+ TRACE_ITER_ANNOTATE = 0x2000,
+ TRACE_ITER_USERSTACKTRACE = 0x4000,
+ TRACE_ITER_SYM_USEROBJ = 0x8000,
+ TRACE_ITER_PRINTK_MSGONLY = 0x10000
};
/*
}
#ifdef CONFIG_BRANCH_TRACER
-extern int enable_unlikely_tracing(struct trace_array *tr);
-extern void disable_unlikely_tracing(void);
-static inline int trace_unlikely_enable(struct trace_array *tr)
+extern int enable_branch_tracing(struct trace_array *tr);
+extern void disable_branch_tracing(void);
+static inline int trace_branch_enable(struct trace_array *tr)
{
- if (trace_flags & TRACE_ITER_UNLIKELY)
- return enable_unlikely_tracing(tr);
+ if (trace_flags & TRACE_ITER_BRANCH)
+ return enable_branch_tracing(tr);
return 0;
}
-static inline void trace_unlikely_disable(void)
+static inline void trace_branch_disable(void)
{
/* due to races, always disable */
- disable_unlikely_tracing();
+ disable_branch_tracing();
}
#else
-static inline int trace_unlikely_enable(struct trace_array *tr)
+static inline int trace_branch_enable(struct trace_array *tr)
{
return 0;
}
-static inline void trace_unlikely_disable(void)
+static inline void trace_branch_disable(void)
{
}
#endif /* CONFIG_BRANCH_TRACER */
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff