mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-26 20:55:22 +07:00
8d00be815c
Commit 1902efe7f for the new comm infra added the wrong check for return
code on thread__set_comm. err == 0 is normal, so don't return at that
point unless err != 0.
Signed-off-by: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Link: http://lkml.kernel.org/r/1386736538-23525-1-git-send-email-dsahern@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
142 lines
2.9 KiB
C
142 lines
2.9 KiB
C
#include "../perf.h"
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include "session.h"
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#include "thread.h"
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#include "util.h"
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#include "debug.h"
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#include "comm.h"
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struct thread *thread__new(pid_t pid, pid_t tid)
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{
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char *comm_str;
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struct comm *comm;
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struct thread *thread = zalloc(sizeof(*thread));
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if (thread != NULL) {
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map_groups__init(&thread->mg);
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thread->pid_ = pid;
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thread->tid = tid;
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thread->ppid = -1;
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INIT_LIST_HEAD(&thread->comm_list);
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comm_str = malloc(32);
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if (!comm_str)
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goto err_thread;
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snprintf(comm_str, 32, ":%d", tid);
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comm = comm__new(comm_str, 0);
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free(comm_str);
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if (!comm)
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goto err_thread;
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list_add(&comm->list, &thread->comm_list);
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}
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return thread;
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err_thread:
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free(thread);
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return NULL;
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}
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void thread__delete(struct thread *thread)
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{
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struct comm *comm, *tmp;
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map_groups__exit(&thread->mg);
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list_for_each_entry_safe(comm, tmp, &thread->comm_list, list) {
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list_del(&comm->list);
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comm__free(comm);
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}
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free(thread);
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}
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struct comm *thread__comm(const struct thread *thread)
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{
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if (list_empty(&thread->comm_list))
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return NULL;
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return list_first_entry(&thread->comm_list, struct comm, list);
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}
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/* CHECKME: time should always be 0 if event aren't ordered */
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int thread__set_comm(struct thread *thread, const char *str, u64 timestamp)
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{
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struct comm *new, *curr = thread__comm(thread);
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/* Override latest entry if it had no specific time coverage */
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if (!curr->start) {
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comm__override(curr, str, timestamp);
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} else {
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new = comm__new(str, timestamp);
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if (!new)
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return -ENOMEM;
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list_add(&new->list, &thread->comm_list);
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}
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thread->comm_set = true;
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return 0;
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}
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const char *thread__comm_str(const struct thread *thread)
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{
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const struct comm *comm = thread__comm(thread);
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if (!comm)
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return NULL;
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return comm__str(comm);
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}
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/* CHECKME: it should probably better return the max comm len from its comm list */
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int thread__comm_len(struct thread *thread)
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{
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if (!thread->comm_len) {
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const char *comm = thread__comm_str(thread);
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if (!comm)
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return 0;
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thread->comm_len = strlen(comm);
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}
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return thread->comm_len;
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}
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size_t thread__fprintf(struct thread *thread, FILE *fp)
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{
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return fprintf(fp, "Thread %d %s\n", thread->tid, thread__comm_str(thread)) +
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map_groups__fprintf(&thread->mg, verbose, fp);
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}
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void thread__insert_map(struct thread *thread, struct map *map)
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{
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map_groups__fixup_overlappings(&thread->mg, map, verbose, stderr);
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map_groups__insert(&thread->mg, map);
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}
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int thread__fork(struct thread *thread, struct thread *parent, u64 timestamp)
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{
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int i, err;
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if (parent->comm_set) {
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const char *comm = thread__comm_str(parent);
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if (!comm)
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return -ENOMEM;
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err = thread__set_comm(thread, comm, timestamp);
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if (err)
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return err;
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thread->comm_set = true;
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}
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for (i = 0; i < MAP__NR_TYPES; ++i)
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if (map_groups__clone(&thread->mg, &parent->mg, i) < 0)
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return -ENOMEM;
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thread->ppid = parent->tid;
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return 0;
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}
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