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(I'm so sorry!) Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel os linux
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#include <errno.h>#include <linux/compiler.h>#include <linux/rbtree.h>#include <linux/types.h>#include "dwarf-regs.h"#include "annotate.h"
#ifdef HAVE_LIBDW_SUPPORT#include "debuginfo.h"#endif
struct annotated_op_loc;struct debuginfo;struct evsel;struct hist_browser_timer;struct hist_entry;struct map_symbol;struct thread;
#define pr_debug_dtp(fmt, ...) \do { \ if (debug_type_profile) \ pr_info(fmt, ##__VA_ARGS__); \ else \ pr_debug3(fmt, ##__VA_ARGS__); \} while (0)
enum type_state_kind { TSR_KIND_INVALID = 0, TSR_KIND_TYPE, TSR_KIND_PERCPU_BASE, TSR_KIND_CONST, TSR_KIND_PERCPU_POINTER, TSR_KIND_POINTER, TSR_KIND_CANARY,};
/** * struct annotated_member - Type of member field * @node: List entry in the parent list * @children: List head for child nodes * @type_name: Name of the member type * @var_name: Name of the member variable * @offset: Offset from the outer data type * @size: Size of the member field * * This represents a member type in a data type. */struct annotated_member { struct list_head node; struct list_head children; char *type_name; char *var_name; int offset; int size;};
/** * struct type_hist_entry - Histogram entry per offset * @nr_samples: Number of samples * @period: Count of event */struct type_hist_entry { int nr_samples; u64 period;};
/** * struct type_hist - Type histogram for each event * @nr_samples: Total number of samples in this data type * @period: Total count of the event in this data type * @offset: Array of histogram entry */struct type_hist { u64 nr_samples; u64 period; struct type_hist_entry addr[];};
/** * struct annotated_data_type - Data type to profile * @node: RB-tree node for dso->type_tree * @self: Actual type information * @nr_histogram: Number of histogram entries * @histograms: An array of pointers to histograms * * This represents a data type accessed by samples in the profile data. */struct annotated_data_type { struct rb_node node; struct annotated_member self; int nr_histograms; struct type_hist **histograms;};
extern struct annotated_data_type unknown_type;extern struct annotated_data_type stackop_type;extern struct annotated_data_type canary_type;
/** * struct data_loc_info - Data location information * @arch: CPU architecture info * @thread: Thread info * @ms: Map and Symbol info * @ip: Instruction address * @var_addr: Data address (for global variables) * @cpumode: CPU execution mode * @op: Instruction operand location (regs and offset) * @di: Debug info * @fbreg: Frame base register * @fb_cfa: Whether the frame needs to check CFA * @type_offset: Final offset in the type */struct data_loc_info { /* These are input field, should be filled by caller */ const struct arch *arch; struct thread *thread; struct map_symbol *ms; u64 ip; u64 var_addr; u8 cpumode; struct annotated_op_loc *op; struct debuginfo *di;
/* These are used internally */ int fbreg; bool fb_cfa;
/* This is for the result */ int type_offset;};
/** * struct annotated_data_stat - Debug statistics * @total: Total number of entry * @no_sym: No symbol or map found * @no_insn: Failed to get disasm line * @no_insn_ops: The instruction has no operands * @no_mem_ops: The instruction has no memory operands * @no_reg: Failed to extract a register from the operand * @no_dbginfo: The binary has no debug information * @no_cuinfo: Failed to find a compile_unit * @no_var: Failed to find a matching variable * @no_typeinfo: Failed to get a type info for the variable * @invalid_size: Failed to get a size info of the type * @bad_offset: The access offset is out of the type */struct annotated_data_stat { int total; int no_sym; int no_insn; int no_insn_ops; int no_mem_ops; int no_reg; int no_dbginfo; int no_cuinfo; int no_var; int no_typeinfo; int invalid_size; int bad_offset; int insn_track;};extern struct annotated_data_stat ann_data_stat;
#ifdef HAVE_LIBDW_SUPPORT/* * Type information in a register, valid when @ok is true. * The @caller_saved registers are invalidated after a function call. */struct type_state_reg { Dwarf_Die type; u32 imm_value; /* * The offset within the struct that the register points to. * A value of 0 means the register points to the beginning. * type_offset = op->offset + reg->offset */ s32 offset; bool ok; bool caller_saved; /* DWARF location range tracking for register lifetime */ bool lifetime_active; u64 lifetime_end; u8 kind; u8 copied_from;};
/* Type information in a stack location, dynamically allocated */struct type_state_stack { struct list_head list; Dwarf_Die type; int offset; /* pointer offset, saves tsr->offset on the stack state */ int ptr_offset; int size; bool compound; u8 kind;};
/* * Maximum number of registers tracked in type_state. * * This limit must cover all supported architectures, since perf * may analyze perf.data files generated on systems with a different * register set. Use 32 as a safe upper bound instead of relying on * build-arch specific values. */#define TYPE_STATE_MAX_REGS 32
/* * State table to maintain type info in each register and stack location. * It'll be updated when new variable is allocated or type info is moved * to a new location (register or stack). As it'd be used with the * shortest path of basic blocks, it only maintains a single table. */struct type_state { /* state of general purpose registers */ struct type_state_reg regs[TYPE_STATE_MAX_REGS]; /* state of stack location */ struct list_head stack_vars; /* return value register */ int ret_reg; /* stack pointer register */ int stack_reg;};
/* Returns data type at the location (ip, reg, offset) */struct annotated_data_type *find_data_type(struct data_loc_info *dloc);
/* Update type access histogram at the given offset */int annotated_data_type__update_samples(struct annotated_data_type *adt, struct evsel *evsel, int offset, int nr_samples, u64 period);
/* Release all data type information in the tree */void annotated_data_type__tree_delete(struct rb_root *root);
/* Release all global variable information in the tree */void global_var_type__tree_delete(struct rb_root *root);
/* Print data type annotation (including members) on stdout */int hist_entry__annotate_data_tty(struct hist_entry *he, struct evsel *evsel);
/* Get name of member field at the given offset in the data type */int annotated_data_type__get_member_name(struct annotated_data_type *adt, char *buf, size_t sz, int member_offset);
bool has_reg_type(struct type_state *state, int reg);struct type_state_stack *findnew_stack_state(struct type_state *state, int offset, u8 kind, Dwarf_Die *type_die, int ptr_offset);void set_stack_state(struct type_state_stack *stack, int offset, u8 kind, Dwarf_Die *type_die, int ptr_offset);struct type_state_stack *find_stack_state(struct type_state *state, int offset);bool get_global_var_type(Dwarf_Die *cu_die, struct data_loc_info *dloc, u64 ip, u64 var_addr, int *var_offset, Dwarf_Die *type_die);bool get_global_var_info(struct data_loc_info *dloc, u64 addr, const char **var_name, int *var_offset);void pr_debug_type_name(Dwarf_Die *die, enum type_state_kind kind);
#else /* HAVE_LIBDW_SUPPORT */
static inline struct annotated_data_type *find_data_type(struct data_loc_info *dloc __maybe_unused){ return NULL;}
static inline intannotated_data_type__update_samples(struct annotated_data_type *adt __maybe_unused, struct evsel *evsel __maybe_unused, int offset __maybe_unused, int nr_samples __maybe_unused, u64 period __maybe_unused){ return -1;}
static inline void annotated_data_type__tree_delete(struct rb_root *root __maybe_unused){}
static inline void global_var_type__tree_delete(struct rb_root *root __maybe_unused){}
static inline int hist_entry__annotate_data_tty(struct hist_entry *he __maybe_unused, struct evsel *evsel __maybe_unused){ return -1;}
static inline int annotated_data_type__get_member_name(struct annotated_data_type *adt __maybe_unused, char *buf __maybe_unused, size_t sz __maybe_unused, int member_offset __maybe_unused){ return -1;}
#endif /* HAVE_LIBDW_SUPPORT */
#ifdef HAVE_SLANG_SUPPORTint hist_entry__annotate_data_tui(struct hist_entry *he, struct evsel *evsel, struct hist_browser_timer *hbt);#elsestatic inline int hist_entry__annotate_data_tui(struct hist_entry *he __maybe_unused, struct evsel *evsel __maybe_unused, struct hist_browser_timer *hbt __maybe_unused){ return -1;}#endif /* HAVE_SLANG_SUPPORT */
#endif /* _PERF_ANNOTATE_DATA_H */