[patch v1] manual: add sched_getcpu()
DJ Delorie
dj@redhat.com
Thu May 15 20:41:00 GMT 2025
diff --git a/manual/resource.texi b/manual/resource.texi
index a9b4b68e2f..39df1c4cb6 100644
--- a/manual/resource.texi
+++ b/manual/resource.texi
@@ -1653,6 +1653,22 @@ The operating system does not support this function.
This function is Linux-specific and is declared in @file{sched.h}.
@end deftypefun
+@deftypefun int sched_getcpu (void)
+@standards{Linux, <sched.h>}
+
+Similar to @code{getcpu} but with a simpler interface. On success,
+returns a nonnegative number identifying the CPU on which the current
+thread is running. Returns @code{-1} on failure. The following
+@code{errno} error condition is defined for this function:
+
+@table @code
+@item ENOSYS
+The operating system does not support this function.
+@end table
+
+This function is Linux-specific and is declared in @file{sched.h}.
+@end deftypefun
+
Here's an example of how to use most of the above to limit the number
of CPUs a process runs on, not including error handling or good logic
on CPU choices:
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