lkml.org 
[lkml]   [2002]   [May]   [2]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
Date
From
Subject[patch] NUMA API for 2.5.12 (4/4)
Ok all,
I'm going to go ahead and assume (hope) that the no response on the last
posting was because the patch was really large. We'll try this again with 4
smaller patches and see what happens.

This patch implements the NUMA API specified at:
http://lse.sourceforge.net/numa/numa_api.html for the 2.5.12 version of the
kernel. The API implements such features as binding processes to CPUs
(similar to Robert Love's recent patch), binding to memory blocks, setting
launch policies for processes, and rudimentary topology features. The patch
is currently used via a prctl() interface with a possible /proc interface in
the future. I also have a syscall version if that is preferred.

Again, this is a slightly cleaned-up, and (more) bite-sized version of the
previous patch sent out...

Enjoy, and please send me any comments on the patch, or the API it implements!

-Matt
colpatch@us.ibm.comdiff -Nur linux-2.5.8-vanilla/include/linux/prctl.h linux-2.5.8-api/include/linux/prctl.h
--- linux-2.5.8-vanilla/include/linux/prctl.h Sun Apr 14 12:18:54 2002
+++ linux-2.5.8-api/include/linux/prctl.h Wed Apr 24 17:31:33 2002
@@ -26,4 +26,31 @@
# define PR_FPEMU_NOPRINT 1 /* silently emulate fp operations accesses */
# define PR_FPEMU_SIGFPE 2 /* don't emulate fp operations, send SIGFPE instead */

+/* Get/Set Restricted CPUs and MemBlks */
+#define PR_SET_RESTRICTED_CPUS 11
+#define PR_SET_RESTRICTED_MEMBLKS 12
+#define PR_GET_RESTRICTED_CPUS 13
+#define PR_GET_RESTRICTED_MEMBLKS 14
+
+/* Get CPU/Node */
+#define PR_GET_CPU 15
+#define PR_GET_NODE 16
+
+/* X to Node conversion functions */
+#define PR_CPU_TO_NODE 17
+#define PR_MEMBLK_TO_NODE 18
+#define PR_NODE_TO_NODE 19
+
+/* Node to X conversion functions */
+#define PR_NODE_TO_CPU 20
+#define PR_NODE_TO_MEMBLK 21
+
+/* Set CPU/MemBlk/Memory Bindings */
+#define PR_BIND_TO_CPUS 22
+#define PR_BIND_TO_MEMBLKS 23
+#define PR_BIND_MEMORY 24
+
+/* Set Launch Policy */
+#define PR_SET_LAUNCH_POLICY 25
+
#endif /* _LINUX_PRCTL_H */
diff -Nur linux-2.5.8-vanilla/kernel/sys.c linux-2.5.8-api/kernel/sys.c
--- linux-2.5.8-vanilla/kernel/sys.c Sun Apr 14 12:18:45 2002
+++ linux-2.5.8-api/kernel/sys.c Wed Apr 24 17:32:17 2002
@@ -16,6 +16,7 @@
#include <linux/highuid.h>
#include <linux/fs.h>
#include <linux/device.h>
+#include <linux/numa.h>

#include <asm/uaccess.h>
#include <asm/io.h>
@@ -1277,6 +1278,51 @@
break;
}
current->keep_capabilities = arg2;
+ break;
+ case PR_SET_RESTRICTED_CPUS:
+ error = (long) set_restricted_cpus((numa_bitmap_t)arg2, (numa_set_t *)arg3);
+ break;
+ case PR_SET_RESTRICTED_MEMBLKS:
+ error = (long) set_restricted_memblks((numa_bitmap_t)arg2, (numa_set_t *)arg3);
+ break;
+ case PR_GET_RESTRICTED_CPUS:
+ error = (long) get_restricted_cpus();
+ break;
+ case PR_GET_RESTRICTED_MEMBLKS:
+ error = (long) get_restricted_memblks();
+ break;
+ case PR_GET_CPU:
+ error = (long) get_cpu();
+ break;
+ case PR_GET_NODE:
+ error = (long) get_node();
+ break;
+ case PR_CPU_TO_NODE:
+ error = (long) cpu_to_node((int)arg2);
+ break;
+ case PR_MEMBLK_TO_NODE:
+ error = (long) memblk_to_node((int)arg2);
+ break;
+ case PR_NODE_TO_NODE:
+ error = (long) node_to_node((int)arg2);
+ break;
+ case PR_NODE_TO_CPU:
+ error = (long) node_to_cpu((int)arg2);
+ break;
+ case PR_NODE_TO_MEMBLK:
+ error = (long) node_to_memblk((int)arg2);
+ break;
+ case PR_BIND_TO_CPUS:
+ error = (long) bind_to_cpu((numa_bitmap_t)arg2, (int)arg3);
+ break;
+ case PR_BIND_TO_MEMBLKS:
+ error = (long) bind_to_memblk((numa_bitmap_t)arg2, (int)arg3);
+ break;
+ case PR_BIND_MEMORY:
+ error = (long) bind_memory((unsigned long)arg2, (size_t)arg3, (numa_bitmap_t)arg4, (int)arg5);
+ break;
+ case PR_SET_LAUNCH_POLICY:
+ error = (long) set_launch_policy((numa_bitmap_t)arg2, (int)arg3, (numa_bitmap_t)arg4, (int)arg5);
break;
default:
error = -EINVAL;
\
 
 \ /
  Last update: 2005-03-22 13:25    [W:0.025 / U:20.632 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site