summaryrefslogtreecommitdiff
path: root/include/linux/threads.h
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-17 02:20:36 +0400
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-17 02:20:36 +0400
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /include/linux/threads.h
downloadlinux-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.xz
Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'include/linux/threads.h')
-rw-r--r--include/linux/threads.h36
1 files changed, 36 insertions, 0 deletions
diff --git a/include/linux/threads.h b/include/linux/threads.h
new file mode 100644
index 000000000000..b59738ac6197
--- /dev/null
+++ b/include/linux/threads.h
@@ -0,0 +1,36 @@
+#ifndef _LINUX_THREADS_H
+#define _LINUX_THREADS_H
+
+#include <linux/config.h>
+
+/*
+ * The default limit for the nr of threads is now in
+ * /proc/sys/kernel/threads-max.
+ */
+
+/*
+ * Maximum supported processors that can run under SMP. This value is
+ * set via configure setting. The maximum is equal to the size of the
+ * bitmasks used on that platform, i.e. 32 or 64. Setting this smaller
+ * saves quite a bit of memory.
+ */
+#ifdef CONFIG_SMP
+#define NR_CPUS CONFIG_NR_CPUS
+#else
+#define NR_CPUS 1
+#endif
+
+#define MIN_THREADS_LEFT_FOR_ROOT 4
+
+/*
+ * This controls the default maximum pid allocated to a process
+ */
+#define PID_MAX_DEFAULT (CONFIG_BASE_SMALL ? 0x1000 : 0x8000)
+
+/*
+ * A maximum of 4 million PIDs should be enough for a while:
+ */
+#define PID_MAX_LIMIT (CONFIG_BASE_SMALL ? PAGE_SIZE * 8 : \
+ (sizeof(long) > 4 ? 4 * 1024 * 1024 : PID_MAX_DEFAULT))
+
+#endif