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161a26b0c2
Check (inlined) function address range strictly for improving output of probe-able lines of inline functions. Without this change, perf probe --line <function> sometimes showed other inline function bodies too, because it didn't filter out inlined functions. Signed-off-by: Masami Hiramatsu <mhiramat@redhat.com> Cc: systemtap <systemtap@sources.redhat.com> Cc: DLE <dle-develop@lists.sourceforge.net> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Mike Galbraith <efault@gmx.de> Cc: K.Prasad <prasad@linux.vnet.ibm.com> Cc: Ulrich Drepper <drepper@redhat.com> Cc: Roland McGrath <roland@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com> LKML-Reference: <20100225133557.6725.20697.stgit@localhost6.localdomain6> Signed-off-by: Ingo Molnar <mingo@elte.hu>
91 lines
2.2 KiB
C
91 lines
2.2 KiB
C
#ifndef _PROBE_FINDER_H
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#define _PROBE_FINDER_H
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#include <stdbool.h>
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#include "util.h"
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#define MAX_PATH_LEN 256
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#define MAX_PROBE_BUFFER 1024
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#define MAX_PROBES 128
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static inline int is_c_varname(const char *name)
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{
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/* TODO */
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return isalpha(name[0]) || name[0] == '_';
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}
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struct probe_point {
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char *event; /* Event name */
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char *group; /* Event group */
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/* Inputs */
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char *file; /* File name */
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int line; /* Line number */
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char *function; /* Function name */
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int offset; /* Offset bytes */
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int nr_args; /* Number of arguments */
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char **args; /* Arguments */
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int retprobe; /* Return probe */
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/* Output */
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int found; /* Number of found probe points */
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char *probes[MAX_PROBES]; /* Output buffers (will be allocated)*/
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};
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/* Line number container */
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struct line_node {
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struct list_head list;
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unsigned int line;
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};
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/* Line range */
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struct line_range {
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char *file; /* File name */
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char *function; /* Function name */
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unsigned int start; /* Start line number */
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unsigned int end; /* End line number */
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int offset; /* Start line offset */
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char *path; /* Real path name */
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struct list_head line_list; /* Visible lines */
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};
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#ifndef NO_DWARF_SUPPORT
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extern int find_probe_point(int fd, struct probe_point *pp);
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extern int find_line_range(int fd, struct line_range *lr);
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#include <dwarf.h>
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#include <libdw.h>
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struct probe_finder {
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struct probe_point *pp; /* Target probe point */
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/* For function searching */
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Dwarf_Addr addr; /* Address */
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const char *fname; /* File name */
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int lno; /* Line number */
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Dwarf_Die cu_die; /* Current CU */
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/* For variable searching */
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Dwarf_Op *fb_ops; /* Frame base attribute */
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Dwarf_Addr cu_base; /* Current CU base address */
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const char *var; /* Current variable name */
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char *buf; /* Current output buffer */
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int len; /* Length of output buffer */
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};
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struct line_finder {
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struct line_range *lr; /* Target line range */
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const char *fname; /* File name */
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int lno_s; /* Start line number */
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int lno_e; /* End line number */
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Dwarf_Die cu_die; /* Current CU */
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int found;
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};
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#endif /* NO_DWARF_SUPPORT */
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#endif /*_PROBE_FINDER_H */
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