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| author | Jiri Olsa <jolsa@kernel.org> | 2014-05-07 21:35:02 +0200 |
|---|---|---|
| committer | Jiri Olsa <jolsa@kernel.org> | 2014-06-12 16:53:21 +0200 |
| commit | a08cae03f430b971afa508a32662dc476d42d8cb (patch) | |
| tree | 3258591c03af54b3392fc3292baa194e63b45296 | |
| parent | perf tools: Add file size check and factor dso__data_read_offset (diff) | |
| download | linux-a08cae03f430b971afa508a32662dc476d42d8cb.tar.xz linux-a08cae03f430b971afa508a32662dc476d42d8cb.zip | |
perf tools: Allow to close dso fd in case of open failure
Adding do_open function that tries to close opened
dso objects in case we fail to open the dso due to
to crossing the allowed RLIMIT_NOFILE limit.
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/1401892622-30848-9-git-send-email-jolsa@kernel.org
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
| -rw-r--r-- | tools/perf/util/dso.c | 23 |
1 files changed, 22 insertions, 1 deletions
diff --git a/tools/perf/util/dso.c b/tools/perf/util/dso.c index db634383156c..c30752c7eebb 100644 --- a/tools/perf/util/dso.c +++ b/tools/perf/util/dso.c @@ -159,6 +159,27 @@ static void dso__list_del(struct dso *dso) dso__data_open_cnt--; } +static void close_first_dso(void); + +static int do_open(char *name) +{ + int fd; + + do { + fd = open(name, O_RDONLY); + if (fd >= 0) + return fd; + + pr_debug("dso open failed, mmap: %s\n", strerror(errno)); + if (!dso__data_open_cnt || errno != EMFILE) + break; + + close_first_dso(); + } while (1); + + return -1; +} + static int __open_dso(struct dso *dso, struct machine *machine) { int fd; @@ -177,7 +198,7 @@ static int __open_dso(struct dso *dso, struct machine *machine) return -EINVAL; } - fd = open(name, O_RDONLY); + fd = do_open(name); free(name); return fd; } |