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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@kernel.org>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jean Pihet <jean.pihet@linaro.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1401892622-30848-6-git-send-email-jolsa@kernel.org
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
hifive-unleashed-5.1
Jiri Olsa 2014-04-30 15:25:10 +02:00
parent eba5102d2f
commit bda6ee4a94
1 changed files with 7 additions and 1 deletions
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8
tools/perf/util/dso.c
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@ -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)