perf record: Add support for using symbols in address filters

Symbols come from either the DSO or /proc/kallsyms for the kernel.
Details of the functionality can be found in Documentation/perf-record.txt.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Mathieu Poirier <mathieu.poirier@linaro.org>
Link: http://lkml.kernel.org/r/1474641528-18776-8-git-send-email-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

1 files changed, 54 insertions, 0 deletions

diff --git a/tools/perf/util/auxtrace.h b/tools/perf/util/auxtrace.h
index 09286f193532..26fb1ee5746a 100644
--- a/tools/perf/util/auxtrace.h
+++ b/tools/perf/util/auxtrace.h
@@ -318,6 +318,48 @@ struct auxtrace_record {
 	unsigned int alignment;
 };
 
+/**
+ * struct addr_filter - address filter.
+ * @list: list node
+ * @range: true if it is a range filter
+ * @start: true if action is 'filter' or 'start'
+ * @action: 'filter', 'start' or 'stop' ('tracestop' is accepted but converted
+ *          to 'stop')
+ * @sym_from: symbol name for the filter address
+ * @sym_to: symbol name that determines the filter size
+ * @sym_from_idx: selects n'th from symbols with the same name (0 means global
+ *                and less than 0 means symbol must be unique)
+ * @sym_to_idx: same as @sym_from_idx but for @sym_to
+ * @addr: filter address
+ * @size: filter region size (for range filters)
+ * @filename: DSO file name or NULL for the kernel
+ * @str: allocated string that contains the other string members
+ */
+struct addr_filter {
+	struct list_head	list;
+	bool			range;
+	bool			start;
+	const char		*action;
+	const char		*sym_from;
+	const char		*sym_to;
+	int			sym_from_idx;
+	int			sym_to_idx;
+	u64			addr;
+	u64			size;
+	const char		*filename;
+	char			*str;
+};
+
+/**
+ * struct addr_filters - list of address filters.
+ * @head: list of address filters
+ * @cnt: number of address filters
+ */
+struct addr_filters {
+	struct list_head	head;
+	int			cnt;
+};
+
 #ifdef HAVE_AUXTRACE_SUPPORT
 
 /*
@@ -482,6 +524,12 @@ void perf_session__auxtrace_error_inc(struct perf_session *session,
 				      union perf_event *event);
 void events_stats__auxtrace_error_warn(const struct events_stats *stats);
 
+void addr_filters__init(struct addr_filters *filts);
+void addr_filters__exit(struct addr_filters *filts);
+int addr_filters__parse_bare_filter(struct addr_filters *filts,
+				    const char *filter);
+int auxtrace_parse_filters(struct perf_evlist *evlist);
+
 static inline int auxtrace__process_event(struct perf_session *session,
 					  union perf_event *event,
 					  struct perf_sample *sample,
@@ -640,6 +688,12 @@ void auxtrace_index__free(struct list_head *head __maybe_unused)
 {
 }
 
+static inline
+int auxtrace_parse_filters(struct perf_evlist *evlist __maybe_unused)
+{
+	return 0;
+}
+
 int auxtrace_mmap__mmap(struct auxtrace_mmap *mm,
 			struct auxtrace_mmap_params *mp,
 			void *userpg, int fd);