#include "eal_trace.h"
RTE_DEFINE_PER_LCORE(volatile int, trace_point_sz);
+RTE_DEFINE_PER_LCORE(void *, trace_mem);
static RTE_DEFINE_PER_LCORE(char, ctf_field[TRACE_CTF_FIELD_SIZE]);
static RTE_DEFINE_PER_LCORE(int, ctf_count);
int
eal_trace_init(void)
{
+ uint8_t i;
+
+ /* Trace memory should start with 8B aligned for natural alignment */
+ RTE_BUILD_BUG_ON((offsetof(struct __rte_trace_header, mem) % 8) != 0);
+
/* One of the trace point registration failed */
if (trace.register_errno) {
rte_errno = trace.register_errno;
goto fail;
}
+ if (trace.args.nb_args)
+ trace.status = true;
+
if (!rte_trace_is_enabled())
return 0;
*/
trace_uuid_generate();
+ /* Apply buffer size configuration for trace output */
+ trace_bufsz_args_apply();
+
+ /* Generate CTF TDSL metadata */
+ if (trace_metadata_create() < 0)
+ goto fail;
+
/* Create trace directory */
if (trace_mkdir())
- goto fail;
+ goto free_meta;
/* Save current epoch timestamp for future use */
if (trace_epoch_time_save() < 0)
goto fail;
+ /* Apply global configurations */
+ for (i = 0; i < trace.args.nb_args; i++)
+ trace_args_apply(trace.args.args[i]);
+
rte_trace_mode_set(trace.mode);
return 0;
+free_meta:
+ trace_metadata_destroy();
fail:
trace_err("failed to initialize trace [%s]", rte_strerror(rte_errno));
return -rte_errno;
{
if (!rte_trace_is_enabled())
return;
+ trace_mem_per_thread_free();
+ trace_metadata_destroy();
+ eal_trace_args_free();
}
bool
return NULL;
}
+static void
+trace_point_dump(FILE *f, struct trace_point *tp)
+{
+ rte_trace_point_t *handle = tp->handle;
+
+ fprintf(f, "\tid %d, %s, size is %d, %s\n",
+ trace_id_get(handle), tp->name,
+ (uint16_t)(*handle & __RTE_TRACE_FIELD_SIZE_MASK),
+ rte_trace_point_is_enabled(handle) ? "enabled" : "disabled");
+}
+
+static void
+trace_lcore_mem_dump(FILE *f)
+{
+ struct trace *trace = trace_obj_get();
+ struct __rte_trace_header *header;
+ uint32_t count;
+
+ if (trace->nb_trace_mem_list == 0)
+ return;
+
+ rte_spinlock_lock(&trace->lock);
+ fprintf(f, "nb_trace_mem_list = %d\n", trace->nb_trace_mem_list);
+ fprintf(f, "\nTrace mem info\n--------------\n");
+ for (count = 0; count < trace->nb_trace_mem_list; count++) {
+ header = trace->lcore_meta[count].mem;
+ fprintf(f, "\tid %d, mem=%p, area=%s, lcore_id=%d, name=%s\n",
+ count, header,
+ trace_area_to_string(trace->lcore_meta[count].area),
+ header->stream_header.lcore_id,
+ header->stream_header.thread_name);
+ }
+ rte_spinlock_unlock(&trace->lock);
+}
+
+void
+rte_trace_dump(FILE *f)
+{
+ struct trace_point_head *tp_list = trace_list_head_get();
+ struct trace *trace = trace_obj_get();
+ struct trace_point *tp;
+
+ fprintf(f, "\nGlobal info\n-----------\n");
+ fprintf(f, "status = %s\n",
+ rte_trace_is_enabled() ? "enabled" : "disabled");
+ fprintf(f, "mode = %s\n",
+ trace_mode_to_string(rte_trace_mode_get()));
+ fprintf(f, "dir = %s\n", trace->dir);
+ fprintf(f, "buffer len = %d\n", trace->buff_len);
+ fprintf(f, "number of trace points = %d\n", trace->nb_trace_points);
+
+ trace_lcore_mem_dump(f);
+ fprintf(f, "\nTrace point info\n----------------\n");
+ STAILQ_FOREACH(tp, tp_list, next)
+ trace_point_dump(f, tp);
+}
+
+void
+__rte_trace_mem_per_thread_alloc(void)
+{
+ struct trace *trace = trace_obj_get();
+ struct __rte_trace_header *header;
+ uint32_t count;
+
+ if (!rte_trace_is_enabled())
+ return;
+
+ if (RTE_PER_LCORE(trace_mem))
+ return;
+
+ rte_spinlock_lock(&trace->lock);
+
+ count = trace->nb_trace_mem_list;
+
+ /* Allocate room for storing the thread trace mem meta */
+ trace->lcore_meta = realloc(trace->lcore_meta,
+ sizeof(trace->lcore_meta[0]) * (count + 1));
+
+ /* Provide dummy space for fast path to consume */
+ if (trace->lcore_meta == NULL) {
+ trace_crit("trace mem meta memory realloc failed");
+ header = NULL;
+ goto fail;
+ }
+
+ /* First attempt from huge page */
+ header = eal_malloc_no_trace(NULL, trace_mem_sz(trace->buff_len), 8);
+ if (header) {
+ trace->lcore_meta[count].area = TRACE_AREA_HUGEPAGE;
+ goto found;
+ }
+
+ /* Second attempt from heap */
+ header = malloc(trace_mem_sz(trace->buff_len));
+ if (header == NULL) {
+ trace_crit("trace mem malloc attempt failed");
+ header = NULL;
+ goto fail;
+
+ }
+
+ /* Second attempt from heap is success */
+ trace->lcore_meta[count].area = TRACE_AREA_HEAP;
+
+ /* Initialize the trace header */
+found:
+ header->offset = 0;
+ header->len = trace->buff_len;
+ header->stream_header.magic = TRACE_CTF_MAGIC;
+ rte_uuid_copy(header->stream_header.uuid, trace->uuid);
+ header->stream_header.lcore_id = rte_lcore_id();
+
+ /* Store the thread name */
+ char *name = header->stream_header.thread_name;
+ memset(name, 0, __RTE_TRACE_EMIT_STRING_LEN_MAX);
+ rte_thread_getname(pthread_self(), name,
+ __RTE_TRACE_EMIT_STRING_LEN_MAX);
+
+ trace->lcore_meta[count].mem = header;
+ trace->nb_trace_mem_list++;
+fail:
+ RTE_PER_LCORE(trace_mem) = header;
+ rte_spinlock_unlock(&trace->lock);
+}
+
+void
+trace_mem_per_thread_free(void)
+{
+ struct trace *trace = trace_obj_get();
+ uint32_t count;
+ void *mem;
+
+ if (!rte_trace_is_enabled())
+ return;
+
+ rte_spinlock_lock(&trace->lock);
+ for (count = 0; count < trace->nb_trace_mem_list; count++) {
+ mem = trace->lcore_meta[count].mem;
+ if (trace->lcore_meta[count].area == TRACE_AREA_HUGEPAGE)
+ eal_free_no_trace(mem);
+ else if (trace->lcore_meta[count].area == TRACE_AREA_HEAP)
+ free(mem);
+ }
+ rte_spinlock_unlock(&trace->lock);
+}
+
+void
+__rte_trace_point_emit_field(size_t sz, const char *in, const char *datatype)
+{
+ char *field = RTE_PER_LCORE(ctf_field);
+ int count = RTE_PER_LCORE(ctf_count);
+ size_t size;
+ int rc;
+
+ size = RTE_MAX(0, TRACE_CTF_FIELD_SIZE - 1 - count);
+ RTE_PER_LCORE(trace_point_sz) += sz;
+ rc = snprintf(RTE_PTR_ADD(field, count), size, "%s %s;", datatype, in);
+ if (rc <= 0 || (size_t)rc >= size) {
+ RTE_PER_LCORE(trace_point_sz) = 0;
+ trace_crit("CTF field is too long");
+ return;
+ }
+ RTE_PER_LCORE(ctf_count) += rc;
+}
+
int
__rte_trace_point_register(rte_trace_point_t *handle, const char *name,
void (*register_fn)(void))
git.droids-corp.org / dpdk.git / blobdiff