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| author | Jiri Olsa <jolsa@kernel.org> | 2014-04-30 17:25:10 +0400 |
|---|---|---|
| committer | Jiri Olsa <jolsa@kernel.org> | 2014-06-12 18:53:20 +0400 |
| commit | bda6ee4a94d1e1be0c1428d37bc0d3da2e5793ad (patch) | |
| tree | 3c63fda210643e1d8605ddfbdea472ec9a109c60 /tools/perf/util/dso.c | |
| parent | eba5102d2f0b4117edd089f2d882d9386025c829 (diff) | |
| download | linux-bda6ee4a94d1e1be0c1428d37bc0d3da2e5793ad.tar.xz | |
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>
Diffstat (limited to 'tools/perf/util/dso.c')
| -rw-r--r-- | tools/perf/util/dso.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/tools/perf/util/dso.c b/tools/perf/util/dso.c index 5d7c7bcc6276..76e5c13afc8f 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) |