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 <namhy...@kernel.org> Cc: Arnaldo Carvalho de Melo <a...@kernel.org> Cc: Corey Ashford <cjash...@linux.vnet.ibm.com> Cc: David Ahern <dsah...@gmail.com> Cc: Frederic Weisbecker <fweis...@gmail.com> Cc: Ingo Molnar <mi...@kernel.org> Cc: Jean Pihet <jean.pi...@linaro.org> Cc: Namhyung Kim <namhy...@kernel.org> Cc: Paul Mackerras <pau...@samba.org> Cc: Peter Zijlstra <a.p.zijls...@chello.nl> Link: http://lkml.kernel.org/r/1401892622-30848-9-git-send-email-jo...@kernel.org Signed-off-by: Jiri Olsa <jo...@kernel.org> --- tools/perf/util/dso.c | 23 ++++++++++++++++++++++- 1 file changed, 22 insertions(+), 1 deletion(-) diff --git a/tools/perf/util/dso.c b/tools/perf/util/dso.c index db63438..c30752c 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; } -- 1.8.3.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
