Commit-ID: bda6ee4a94d1e1be0c1428d37bc0d3da2e5793ad
Gitweb: http://git.kernel.org/tip/bda6ee4a94d1e1be0c1428d37bc0d3da2e5793ad
Author: Jiri Olsa <jolsa@xxxxxxxxxx>
AuthorDate: Wed, 30 Apr 2014 15:25:10 +0200
Committer: Jiri Olsa <jolsa@xxxxxxxxxx>
CommitDate: Thu, 12 Jun 2014 16:53:20 +0200
perf tools: Add global count of opened dso objects
Adding global count of opened dso objects so we could
properly limit the number of opened dso data file
descriptors.
Acked-by: Namhyung Kim <namhyung@xxxxxxxxxx>
Cc: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
Cc: Corey Ashford <cjashfor@xxxxxxxxxxxxxxxxxx>
Cc: David Ahern <dsahern@xxxxxxxxx>
Cc: Frederic Weisbecker <fweisbec@xxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxxxxx>
Cc: Jean Pihet <jean.pihet@xxxxxxxxxx>
Cc: Namhyung Kim <namhyung@xxxxxxxxxx>
Cc: Paul Mackerras <paulus@xxxxxxxxx>
Cc: Peter Zijlstra <a.p.zijlstra@xxxxxxxxx>
Link: http://lkml.kernel.org/r/1401892622-30848-6-git-send-email-jolsa@xxxxxxxxxx
Signed-off-by: Jiri Olsa <jolsa@xxxxxxxxxx>
---
tools/perf/util/dso.c | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/tools/perf/util/dso.c b/tools/perf/util/dso.c
index 5d7c7bc..76e5c13 100644
--- a/tools/perf/util/dso.c
+++ b/tools/perf/util/dso.c
@@ -1,3 +1,4 @@
+#include <asm/bug.h>
#include "symbol.h"
#include "dso.h"
#include "machine.h"
@@ -137,18 +138,23 @@ int dso__read_binary_type_filename(const struct dso *dso,
}
/*
- * Global list of open DSOs.
+ * Global list of open DSOs and the counter.
*/
static LIST_HEAD(dso__data_open);
+static long dso__data_open_cnt;
static void dso__list_add(struct dso *dso)
{
list_add_tail(&dso->data.open_entry, &dso__data_open);
+ dso__data_open_cnt++;
}
static void dso__list_del(struct dso *dso)
{
list_del(&dso->data.open_entry);
+ WARN_ONCE(dso__data_open_cnt <= 0,
+ "DSO data fd counter out of bounds.");
+ dso__data_open_cnt--;
}
static int __open_dso(struct dso *dso, struct machine *machine)
--
To unsubscribe from this list: send the line "unsubscribe linux-tip-commits" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
|