Linus,
Comment above getpid() is wrong.
This patch fixes it, and expands the comment to explain why on earth we
have getpid() returning ->tgid and not ->pid.
Patch is against 2.5.41, por favor, mi mejor ping?ino, se aplica.
Robert Love
diff -urN linux-2.5.41/kernel/timer.c linux/kernel/timer.c
--- linux-2.5.41/kernel/timer.c 2002-10-07 14:24:00.000000000 -0400
+++ linux/kernel/timer.c 2002-10-07 21:37:28.000000000 -0400
@@ -798,10 +798,18 @@
* The Alpha uses getxpid, getxuid, and getxgid instead. Maybe this
* should be moved into arch/i386 instead?
*/
-
+
+/**
+ * sys_getpid - return the thread group id of the current process
+ *
+ * Note, despite the name, this returns the tgid not the pid. The tgid and
+ * the pid are identical unless CLONE_THREAD was specified on clone() in
+ * which case the tgid is the same in all threads of the same group.
+ *
+ * This is SMP safe as current->tgid does not change.
+ */
asmlinkage long sys_getpid(void)
{
- /* This is SMP safe - current->pid doesn't change */
return current->tgid;
}