forked from Minki/linux
5fd73f8624
Impact: clean up The trace and latency_trace function pointers are identical for every tracer but the function tracer. The differences in the function tracer are trivial (latency output puts paranthesis around parent). This patch removes the latency_trace pointer and all prints will now just use the trace output function pointer. Signed-off-by: Steven Rostedt <srostedt@redhat.com>
62 lines
1.9 KiB
C
62 lines
1.9 KiB
C
#ifndef __TRACE_EVENTS_H
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#define __TRACE_EVENTS_H
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#include "trace.h"
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typedef enum print_line_t (*trace_print_func)(struct trace_iterator *iter,
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int flags);
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struct trace_event {
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struct hlist_node node;
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int type;
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trace_print_func trace;
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trace_print_func raw;
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trace_print_func hex;
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trace_print_func binary;
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};
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extern int trace_seq_printf(struct trace_seq *s, const char *fmt, ...)
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__attribute__ ((format (printf, 2, 3)));
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extern int
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seq_print_ip_sym(struct trace_seq *s, unsigned long ip,
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unsigned long sym_flags);
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extern ssize_t trace_seq_to_user(struct trace_seq *s, char __user *ubuf,
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size_t cnt);
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int trace_seq_puts(struct trace_seq *s, const char *str);
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int trace_seq_putc(struct trace_seq *s, unsigned char c);
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int trace_seq_putmem(struct trace_seq *s, void *mem, size_t len);
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int trace_seq_putmem_hex(struct trace_seq *s, void *mem, size_t len);
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int trace_seq_path(struct trace_seq *s, struct path *path);
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int seq_print_userip_objs(const struct userstack_entry *entry,
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struct trace_seq *s, unsigned long sym_flags);
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int seq_print_user_ip(struct trace_seq *s, struct mm_struct *mm,
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unsigned long ip, unsigned long sym_flags);
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int trace_print_context(struct trace_iterator *iter);
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int trace_print_lat_context(struct trace_iterator *iter);
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struct trace_event *ftrace_find_event(int type);
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int register_ftrace_event(struct trace_event *event);
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int unregister_ftrace_event(struct trace_event *event);
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enum print_line_t trace_nop_print(struct trace_iterator *iter, int flags);
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#define MAX_MEMHEX_BYTES 8
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#define HEX_CHARS (MAX_MEMHEX_BYTES*2 + 1)
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#define SEQ_PUT_FIELD_RET(s, x) \
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do { \
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if (!trace_seq_putmem(s, &(x), sizeof(x))) \
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return TRACE_TYPE_PARTIAL_LINE; \
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} while (0)
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#define SEQ_PUT_HEX_FIELD_RET(s, x) \
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do { \
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BUILD_BUG_ON(sizeof(x) > MAX_MEMHEX_BYTES); \
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if (!trace_seq_putmem_hex(s, &(x), sizeof(x))) \
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return TRACE_TYPE_PARTIAL_LINE; \
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} while (0)
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#endif
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