From: Mark Huang <mlhuang@cs.princeton.edu>
Date: Thu, 27 Jul 2006 21:05:47 +0000 (+0000)
Subject: Initial revision
X-Git-Tag: before-fedora-2_6_18-1_2239_FC5-vs2_0_2_2-rc6-merge~36
X-Git-Url: http://git.onelab.eu/?a=commitdiff_plain;h=293d13e57cfcfbdf505086df2808c0015b271fbd;p=linux-2.6.git

Initial revision
---

diff --git a/include/linux/vserver/limit_int.h b/include/linux/vserver/limit_int.h
new file mode 100644
index 000000000..a48d242b3
--- /dev/null
+++ b/include/linux/vserver/limit_int.h
@@ -0,0 +1,76 @@
+#ifndef _VX_LIMIT_INT_H
+#define _VX_LIMIT_INT_H
+
+
+#ifdef	__KERNEL__
+
+#define VXD_RCRES(r)	VXD_CBIT(cres, (r))
+#define VXD_RLIMIT(r)	VXD_CBIT(limit, (r))
+
+extern const char *vlimit_name[NUM_LIMITS];
+
+static inline void __vx_acc_cres(struct vx_info *vxi,
+	int res, int dir, void *_data, char *_file, int _line)
+{
+	if (VXD_RCRES(res))
+		vxlprintk(1, "vx_acc_cres[%5d,%s,%2d]: %5d%s (%p)",
+			(vxi ? vxi->vx_id : -1), vlimit_name[res], res,
+			(vxi ? atomic_read(&vxi->limit.rcur[res]) : 0),
+			(dir > 0) ? "++" : "--", _data, _file, _line);
+	if (!vxi)
+		return;
+
+	if (dir > 0)
+		atomic_inc(&vxi->limit.rcur[res]);
+	else
+		atomic_dec(&vxi->limit.rcur[res]);
+}
+
+static inline void __vx_add_cres(struct vx_info *vxi,
+	int res, int amount, void *_data, char *_file, int _line)
+{
+	if (VXD_RCRES(res))
+		vxlprintk(1, "vx_add_cres[%5d,%s,%2d]: %5d += %5d (%p)",
+			(vxi ? vxi->vx_id : -1), vlimit_name[res], res,
+			(vxi ? atomic_read(&vxi->limit.rcur[res]) : 0),
+			amount, _data, _file, _line);
+	if (amount == 0)
+		return;
+	if (!vxi)
+		return;
+	atomic_add(amount, &vxi->limit.rcur[res]);
+}
+
+static inline int __vx_cres_avail(struct vx_info *vxi,
+		int res, int num, char *_file, int _line)
+{
+	unsigned long value;
+
+	if (VXD_RLIMIT(res))
+		vxlprintk(1, "vx_cres_avail[%5d,%s,%2d]: %5ld > %5d + %5d",
+			(vxi ? vxi->vx_id : -1), vlimit_name[res], res,
+			(vxi ? vxi->limit.rlim[res] : 1),
+			(vxi ? atomic_read(&vxi->limit.rcur[res]) : 0),
+			num, _file, _line);
+	if (num == 0)
+		return 1;
+	if (!vxi)
+		return 1;
+
+	value = atomic_read(&vxi->limit.rcur[res]);
+
+	if (value > vxi->limit.rmax[res])
+		vxi->limit.rmax[res] = value;
+
+	if (vxi->limit.rlim[res] == RLIM_INFINITY)
+		return 1;
+
+	if (value + num <= vxi->limit.rlim[res])
+		return 1;
+
+	atomic_inc(&vxi->limit.lhit[res]);
+	return 0;
+}
+
+#endif	/* __KERNEL__ */
+#endif	/* _VX_LIMIT_H */