From: Jerin Jacob <jer...@marvell.com>
Implement rte_trace_save(), which will save the metadata
file and trace memory snapshot to the trace directory.
Signed-off-by: Jerin Jacob <jer...@marvell.com>
---
.../common/eal_common_trace_utils.c | 80 +++++++++++++++++++
lib/librte_eal/rte_eal_version.map | 1 +
2 files changed, 81 insertions(+)
diff --git a/lib/librte_eal/common/eal_common_trace_utils.c
b/lib/librte_eal/common/eal_common_trace_utils.c
index b288a72f0..64e7a7cfa 100644
--- a/lib/librte_eal/common/eal_common_trace_utils.c
+++ b/lib/librte_eal/common/eal_common_trace_utils.c
@@ -213,3 +213,83 @@ trace_mkdir(void)
return 0;
}
+static int
+trace_meta_save(struct trace *trace)
+{
+ char file_name[PATH_MAX];
+ FILE *f;
+ int rc;
+
+ rc = snprintf(file_name, PATH_MAX, "%s/metadata", trace->dir);
+ if (rc < 0)
+ return rc;
+
+ f = fopen(file_name, "w");
+ if (f == NULL)
+ return -errno;
+
+ rc = rte_trace_metadata_dump(f);
+
+ if (fclose(f))
+ rc = -errno;
+
+ return rc;
+}
+
+
+static inline int
+trace_file_sz(struct __rte_trace_header *hdr)
+{
+ return sizeof(struct __rte_trace_stream_header) + hdr->offset;
+}
+
+static int
+trace_mem_save(struct trace *trace, struct __rte_trace_header *hdr,
+ uint32_t cnt)
+{
+ char file_name[PATH_MAX];
+ FILE *f;
+ int rc;
+
+ rc = snprintf(file_name, PATH_MAX, "%s/channel0_%d", trace->dir, cnt);
+ if (rc < 0)
+ return rc;
+
+ f = fopen(file_name, "w");
+ if (f == NULL)
+ return -errno;
+
+ rc = fwrite(&hdr->stream_header, trace_file_sz(hdr), 1, f);
+ rc = (rc == 1) ? 0 : -EACCES;
+
+ if (fclose(f))
+ rc = -errno;
+
+ return rc;
+}
+
+int
+rte_trace_save(void)
+{
+ struct trace *trace = trace_obj_get();
+ struct __rte_trace_header *header;
+ uint32_t count;
+ int rc = 0;
+
+ if (trace->nb_trace_mem_list == 0)
+ return rc;
+
+ rc = trace_meta_save(trace);
+ if (rc)
+ return rc;
+
+ rte_spinlock_lock(&trace->lock);
+ for (count = 0; count < trace->nb_trace_mem_list; count++) {
+ header = trace->lcore_meta[count].mem;
+ rc = trace_mem_save(trace, header, count);
+ if (rc)
+ break;
+ }
+ rte_spinlock_unlock(&trace->lock);
+ return rc;
+}
diff --git a/lib/librte_eal/rte_eal_version.map
b/lib/librte_eal/rte_eal_version.map
index 82f4461e2..f841cc7d6 100644
--- a/lib/librte_eal/rte_eal_version.map
+++ b/lib/librte_eal/rte_eal_version.map
@@ -360,6 +360,7 @@ EXPERIMENTAL {
rte_trace_pattern;
rte_trace_regexp;
rte_trace_by_name;
+ rte_trace_save;
rte_trace_metadata_dump;
rte_trace_dump;
};
--
2.25.1
