perf: Use eprintf() for debug messages in perf-probe

Replace debug() macro with eprintf() and add -v option for
showing those messages in perf-probe.
Signed-off-by: Masami Hiramatsu <mhiramat@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <20091017000810.16556.38013.stgit@dhcp-100-2-132.bos.redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

tools/perf/builtin-probe.c

@@ -35,6 +35,8 @@
 #include "perf.h"
 #include "builtin.h"
 #include "util/util.h"
+#include "util/event.h"
+#include "util/debug.h"
 #include "util/parse-options.h"
 #include "util/parse-events.h"	/* For debugfs_path */
 #include "util/probe-finder.h"
@@ -76,7 +78,7 @@ static int parse_probepoint(const struct option *opt __used,
 	if (!str)	/* The end of probe points */
 		return 0;
 
-	debug("Probe-define(%d): %s\n", session.nr_probe, str);
+	eprintf("probe-definition(%d): %s\n", session.nr_probe, str);
 	if (++session.nr_probe == MAX_PROBES)
 		semantic_error("Too many probes");
 
@@ -101,7 +103,7 @@ static int parse_probepoint(const struct option *opt __used,
 				die("strndup");
 			if (++argc == MAX_PROBE_ARGS)
 				semantic_error("Too many arguments");
-			debug("argv[%d]=%s\n", argc, argv[argc - 1]);
+			eprintf("argv[%d]=%s\n", argc, argv[argc - 1]);
 		}
 	} while (*str != '\0');
 	if (argc < 2)
@@ -131,7 +133,7 @@ static int parse_probepoint(const struct option *opt __used,
 		pp->line = atoi(ptr);
 		if (!pp->file || !pp->line)
 			semantic_error("Failed to parse line.");
-		debug("file:%s line:%d\n", pp->file, pp->line);
+		eprintf("file:%s line:%d\n", pp->file, pp->line);
 	} else {
 		/* Function name */
 		ptr = strchr(arg, '+');
@@ -148,7 +150,7 @@ static int parse_probepoint(const struct option *opt __used,
 			pp->file = strdup(ptr);
 		}
 		pp->function = strdup(arg);
-		debug("symbol:%s file:%s offset:%d\n",
+		eprintf("symbol:%s file:%s offset:%d\n",
 		      pp->function, pp->file, pp->offset);
 	}
 	free(argv[1]);
@@ -173,7 +175,7 @@ static int parse_probepoint(const struct option *opt __used,
 			session.need_dwarf = 1;
 		}
 
-	debug("%d arguments\n", pp->nr_args);
+	eprintf("%d arguments\n", pp->nr_args);
 	return 0;
 }
 
@@ -186,7 +188,7 @@ static int open_default_vmlinux(void)
 
 	ret = uname(&uts);
 	if (ret) {
-		debug("uname() failed.\n");
+		eprintf("uname() failed.\n");
 		return -errno;
 	}
 	session.release = uts.release;
@@ -194,11 +196,12 @@ static int open_default_vmlinux(void)
 		ret = snprintf(fname, MAX_PATH_LEN,
 			       default_search_path[i], session.release);
 		if (ret >= MAX_PATH_LEN || ret < 0) {
-			debug("Filename(%d,%s) is too long.\n", i, uts.release);
+			eprintf("Filename(%d,%s) is too long.\n", i,
+				uts.release);
 			errno = E2BIG;
 			return -E2BIG;
 		}
-		debug("try to open %s\n", fname);
+		eprintf("try to open %s\n", fname);
 		fd = open(fname, O_RDONLY);
 		if (fd >= 0)
 			break;
@@ -213,6 +216,8 @@ static const char * const probe_usage[] = {
 };
 
 static const struct option options[] = {
+	OPT_BOOLEAN('v', "verbose", &verbose,
+		    "be more verbose (show parsed arguments, etc)"),
 #ifndef NO_LIBDWARF
 	OPT_STRING('k', "vmlinux", &session.vmlinux, "file",
 		"vmlinux/module pathname"),
@@ -336,7 +341,7 @@ int cmd_probe(int argc, const char **argv, const char *prefix __used)
 		ret = find_probepoint(fd, pp);
 		if (ret <= 0)
 			die("No probe point found.\n");
-		debug("probe event %s found\n", session.events[j]);
+		eprintf("probe event %s found\n", session.events[j]);
 	}
 	close(fd);
 

tools/perf/util/probe-finder.c

@@ -32,6 +32,8 @@
 #include <stdarg.h>
 #include <ctype.h>
 
+#include "event.h"
+#include "debug.h"
 #include "util.h"
 #include "probe-finder.h"
 
@@ -134,7 +136,7 @@ static Dwarf_Unsigned die_get_fileno(Dwarf_Die cu_die, const char *fname)
 		dwarf_dealloc(__dw_debug, srcs, DW_DLA_LIST);
 	}
 	if (found)
-		debug("found fno: %d\n", (int)found);
+		eprintf("found fno: %d\n", (int)found);
 	return found;
 }
 
@@ -440,7 +442,7 @@ static void find_variable(Dwarf_Die sp_die, struct probe_finder *pf)
 		return ;
 	}
 
-	debug("Searching '%s' variable in context.\n", pf->var);
+	eprintf("Searching '%s' variable in context.\n", pf->var);
 	/* Search child die for local variables and parameters. */
 	ret = search_die_from_children(sp_die, variable_callback, pf);
 	if (!ret)
@@ -550,7 +552,7 @@ static void find_by_line(Dwarf_Die cu_die, struct probe_finder *pf)
 
 		ret = dwarf_lineaddr(lines[i], &addr, &__dw_error);
 		ERR_IF(ret != DW_DLV_OK);
-		debug("Probe point found: 0x%llx\n", addr);
+		eprintf("Probe point found: 0x%llx\n", addr);
 		pf->addr = addr;
 		/* Search a real subprogram including this line, */
 		ret = search_die_from_children(cu_die, probeaddr_callback, pf);
@@ -581,7 +583,7 @@ static int probefunc_callback(struct die_link *dlink, void *data)
 							  &pf->inl_offs,
 							  &__dw_error);
 				ERR_IF(ret != DW_DLV_OK);
-				debug("inline definition offset %lld\n",
+				eprintf("inline definition offset %lld\n",
 					pf->inl_offs);
 				return 0;
 			}
@@ -597,7 +599,7 @@ static int probefunc_callback(struct die_link *dlink, void *data)
 			/* Get probe address */
 			pf->addr = die_get_entrypc(dlink->die);
 			pf->addr += pp->offset;
-			debug("found inline addr: 0x%llx\n", pf->addr);
+			eprintf("found inline addr: 0x%llx\n", pf->addr);
 			/* Inlined function. Get a real subprogram */
 			for (lk = dlink->parent; lk != NULL; lk = lk->parent) {
 				tag = 0;

tools/perf/util/probe-finder.h

@@ -4,13 +4,6 @@
 #define _stringify(n)	#n
 #define stringify(n)	_stringify(n)
 
-#ifdef DEBUG
-#define debug(fmt ...)	\
-	fprintf(stderr, "DBG(" __FILE__ ":" stringify(__LINE__) "): " fmt)
-#else
-#define debug(fmt ...)	do {} while (0)
-#endif
-
 #define ERR_IF(cnd)	\
 	do { if (cnd) {	\
 		fprintf(stderr, "Error (" __FILE__ ":" stringify(__LINE__) \