From 4e613c118e301a1a6a70336cd7b65bf18b4bc7b0 Mon Sep 17 00:00:00 2001
From: Fabien Wernli <cpan@faxm0dem.org>
Date: Tue, 25 Oct 2011 15:15:16 +0200
Subject: [PATCH] This improves solaris memory plugin granularity.

Locked memory is now only tracking non-kernel locked memory.
We add kernel and unusable memory.
Source: http://www.brendangregg.com/K9Toolkit/swapinfo

Change-Id: I4f4d281e991068dc845d8c3615d285fc2a3296c8
---
 src/memory.c | 30 ++++++++++++++++++++++++++++++
 1 file changed, 30 insertions(+)

diff --git a/src/memory.c b/src/memory.c
index b79a74b7..d1cd3261 100644
--- a/src/memory.c
+++ b/src/memory.c
@@ -321,9 +321,16 @@ static int memory_read (void)
 /* #endif KERNEL_LINUX */
 
 #elif HAVE_LIBKSTAT
+        /* Most of the additions here were taken as-is from the k9toolkit from
+         * Brendan Gregg and are subject to change I guess */
 	long long mem_used;
 	long long mem_free;
 	long long mem_lock;
+	long long mem_kern;
+	long long mem_unus;
+
+	long long pp_kernel;
+	long long physmem;
 
 	if (ksp == NULL)
 		return (-1);
@@ -331,20 +338,43 @@ static int memory_read (void)
 	mem_used = get_kstat_value (ksp, "pagestotal");
 	mem_free = get_kstat_value (ksp, "pagesfree");
 	mem_lock = get_kstat_value (ksp, "pageslocked");
+	mem_kern = 0;
+	mem_unus = 0;
+
+	pp_kernel = get_kstat_value (ksp, "pp_kernel");
+	physmem = get_kstat_value (ksp, "physmem");
 
 	if ((mem_used < 0LL) || (mem_free < 0LL) || (mem_lock < 0LL))
 		return (-1);
 	if (mem_used < (mem_free + mem_lock))
 		return (-1);
 
+	mem_unus = physmem - mem_used;
 	mem_used -= mem_free + mem_lock;
+
+	/* mem_kern is accounted for in mem_lock */
+	if ( pp_kernel < mem_lock )
+	{
+		mem_kern = pp_kernel;
+		mem_lock -= pp_kernel;
+	}
+	else
+	{
+		mem_kern = mem_lock;
+		mem_lock = 0;
+	}
+
 	mem_used *= pagesize; /* If this overflows you have some serious */
 	mem_free *= pagesize; /* memory.. Why not call me up and give me */
 	mem_lock *= pagesize; /* some? ;) */
+	mem_kern *= pagesize; /* it's 2011 RAM is cheap */
+	mem_unus *= pagesize;
 
 	memory_submit ("used",   mem_used);
 	memory_submit ("free",   mem_free);
 	memory_submit ("locked", mem_lock);
+	memory_submit ("kernel", mem_kern);
+	memory_submit ("unusable", mem_unus);
 /* #endif HAVE_LIBKSTAT */
 
 #elif HAVE_SYSCTL
-- 
2.11.0