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perf symbols: Add dso__last_symbol() 

Add a function to find the last symbol in a DSO. This will be used when
parsing address filters to calculate a region that includes the entire
DSO.

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/1474641528-18776-7-git-send-email-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Adrian Hunter 2016-09-23 17:38:38 +03:00 committed by Arnaldo Carvalho de Melo
parent 5c01ad60b8
commit cd67f99fe9
2 changed files with 16 additions and 0 deletions
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15
tools/perf/util/symbol.c
View File

@ -345,6 +345,16 @@ static struct symbol *symbols__first(struct rb_root *symbols)
return NULL;
}
static struct symbol *symbols__last(struct rb_root *symbols)
{
struct rb_node *n = rb_last(symbols);
if (n)
return rb_entry(n, struct symbol, rb_node);
return NULL;
}
static struct symbol *symbols__next(struct symbol *sym)
{
struct rb_node *n = rb_next(&sym->rb_node);
@ -466,6 +476,11 @@ struct symbol *dso__first_symbol(struct dso *dso, enum map_type type)
return symbols__first(&dso->symbols[type]);
}
struct symbol *dso__last_symbol(struct dso *dso, enum map_type type)
{
return symbols__last(&dso->symbols[type]);
}
struct symbol *dso__next_symbol(struct symbol *sym)
{
return symbols__next(sym);

1
tools/perf/util/symbol.h
View File

@ -259,6 +259,7 @@ struct symbol *dso__find_symbol_by_name(struct dso *dso, enum map_type type,
struct symbol *symbol__next_by_name(struct symbol *sym);
struct symbol *dso__first_symbol(struct dso *dso, enum map_type type);
struct symbol *dso__last_symbol(struct dso *dso, enum map_type type);
struct symbol *dso__next_symbol(struct symbol *sym);
enum dso_type dso__type_fd(int fd);