Add 'data.status' to record whether a dso has data (i.e. an object file). This is used to avoid repeatedly creating the file name and attempting to open a file that is not present.
Signed-off-by: Adrian Hunter <[email protected]> --- tools/perf/util/dso.c | 23 +++++++++++++++-------- tools/perf/util/dso.h | 7 +++++++ 2 files changed, 22 insertions(+), 8 deletions(-) diff --git a/tools/perf/util/dso.c b/tools/perf/util/dso.c index 28cf747..8827db3 100644 --- a/tools/perf/util/dso.c +++ b/tools/perf/util/dso.c @@ -331,26 +331,32 @@ int dso__data_fd(struct dso *dso, struct machine *machine) }; int i = 0; + if (dso->data.status == DSO_DATA_STATUS_ERROR) + return -1; + if (dso->data.fd >= 0) - return dso->data.fd; + goto out; if (dso->binary_type != DSO_BINARY_TYPE__NOT_FOUND) { dso->data.fd = open_dso(dso, machine); - return dso->data.fd; + goto out; } do { - int fd; - dso->binary_type = binary_type_data[i++]; - fd = open_dso(dso, machine); - if (fd >= 0) - return dso->data.fd = fd; + dso->data.fd = open_dso(dso, machine); + if (dso->data.fd >= 0) + goto out; } while (dso->binary_type != DSO_BINARY_TYPE__NOT_FOUND); +out: + if (dso->data.fd >= 0) + dso->data.status = DSO_DATA_STATUS_OK; + else + dso->data.status = DSO_DATA_STATUS_ERROR; - return -EINVAL; + return dso->data.fd; } static void @@ -701,6 +707,7 @@ struct dso *dso__new(const char *name) dso->symbols[i] = dso->symbol_names[i] = RB_ROOT; dso->data.cache = RB_ROOT; dso->data.fd = -1; + dso->data.status = DSO_DATA_STATUS_UNKNOWN; dso->symtab_type = DSO_BINARY_TYPE__NOT_FOUND; dso->binary_type = DSO_BINARY_TYPE__NOT_FOUND; dso->is_64_bit = (sizeof(void *) == 8); diff --git a/tools/perf/util/dso.h b/tools/perf/util/dso.h index c239e86..aeb7bcb 100644 --- a/tools/perf/util/dso.h +++ b/tools/perf/util/dso.h @@ -40,6 +40,12 @@ enum dso_swap_type { DSO_SWAP__YES, }; +enum dso_data_status { + DSO_DATA_STATUS_ERROR = -1, + DSO_DATA_STATUS_UNKNOWN = 0, + DSO_DATA_STATUS_OK = 1, +}; + #define DSO__SWAP(dso, type, val) \ ({ \ type ____r = val; \ @@ -104,6 +110,7 @@ struct dso { struct { struct rb_root cache; int fd; + int status; size_t file_size; struct list_head open_entry; } data; -- 1.8.3.2 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
