[v2,8/9] trace: remove limitation on trace point name
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Commit Message
The name of a trace point is provided as a constant string via the
RTE_TRACE_POINT_REGISTER macro.
We can rely on the constant string in the binary and simply point at it.
There is then no need for a (fixed size) copy.
Signed-off-by: David Marchand <david.marchand@redhat.com>
---
lib/eal/common/eal_common_trace.c | 10 +++-------
lib/eal/common/eal_common_trace_utils.c | 2 +-
lib/eal/common/eal_trace.h | 3 +--
3 files changed, 5 insertions(+), 10 deletions(-)
@@ -235,7 +235,7 @@ rte_trace_point_lookup(const char *name)
return NULL;
STAILQ_FOREACH(tp, &tp_list, next)
- if (strncmp(tp->name, name, TRACE_POINT_NAME_SIZE) == 0)
+ if (strcmp(tp->name, name) == 0)
return tp->handle;
return NULL;
@@ -492,10 +492,7 @@ __rte_trace_point_register(rte_trace_point_t *handle, const char *name,
}
/* Initialize the trace point */
- if (rte_strscpy(tp->name, name, TRACE_POINT_NAME_SIZE) < 0) {
- trace_err("name is too long");
- goto free;
- }
+ tp->name = name;
/* Copy the accumulated fields description and clear it for the next
* trace point.
@@ -517,8 +514,7 @@ __rte_trace_point_register(rte_trace_point_t *handle, const char *name,
/* All Good !!! */
return 0;
-free:
- free(tp);
+
fail:
if (trace.register_errno == 0)
trace.register_errno = rte_errno;
@@ -42,7 +42,7 @@ trace_entry_compare(const char *name)
int count = 0;
STAILQ_FOREACH(tp, tp_list, next) {
- if (strncmp(tp->name, name, TRACE_POINT_NAME_SIZE) == 0)
+ if (strcmp(tp->name, name) == 0)
count++;
if (count > 1) {
trace_err("found duplicate entry %s", name);
@@ -24,14 +24,13 @@
#define TRACE_PREFIX_LEN 12
#define TRACE_DIR_STR_LEN (sizeof("YYYY-mm-dd-AM-HH-MM-SS") + TRACE_PREFIX_LEN)
-#define TRACE_POINT_NAME_SIZE 64
#define TRACE_CTF_MAGIC 0xC1FC1FC1
#define TRACE_MAX_ARGS 32
struct trace_point {
STAILQ_ENTRY(trace_point) next;
rte_trace_point_t *handle;
- char name[TRACE_POINT_NAME_SIZE];
+ const char *name;
char *ctf_field;
};