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!
diff --git a/arch/s390/appldata/appldata_mem.c b/arch/s390/appldata/appldata_mem.c
new file mode 100644
index 0000000..462ee9a
--- /dev/null
+++ b/arch/s390/appldata/appldata_mem.c
@@ -0,0 +1,195 @@
+/*
+ * arch/s390/appldata/appldata_mem.c
+ *
+ * Data gathering module for Linux-VM Monitor Stream, Stage 1.
+ * Collects data related to memory management.
+ *
+ * Copyright (C) 2003 IBM Corporation, IBM Deutschland Entwicklung GmbH.
+ *
+ * Author: Gerald Schaefer <geraldsc@de.ibm.com>
+ */
+
+#include <linux/config.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/errno.h>
+#include <linux/kernel_stat.h>
+#include <asm/io.h>
+#include <linux/pagemap.h>
+#include <linux/swap.h>
+
+#include "appldata.h"
+
+
+#define MY_PRINT_NAME "appldata_mem" /* for debug messages, etc. */
+#define P2K(x) ((x) << (PAGE_SHIFT - 10)) /* Converts #Pages to KB */
+
+/*
+ * Memory data
+ *
+ * This is accessed as binary data by z/VM. If changes to it can't be avoided,
+ * the structure version (product ID, see appldata_base.c) needs to be changed
+ * as well and all documentation and z/VM applications using it must be
+ * updated.
+ *
+ * The record layout is documented in the Linux for zSeries Device Drivers
+ * book:
+ * http://oss.software.ibm.com/developerworks/opensource/linux390/index.shtml
+ */
+struct appldata_mem_data {
+ u64 timestamp;
+ u32 sync_count_1; /* after VM collected the record data, */
+ u32 sync_count_2; /* sync_count_1 and sync_count_2 should be the
+ same. If not, the record has been updated on
+ the Linux side while VM was collecting the
+ (possibly corrupt) data */
+
+ u64 pgpgin; /* data read from disk */
+ u64 pgpgout; /* data written to disk */
+ u64 pswpin; /* pages swapped in */
+ u64 pswpout; /* pages swapped out */
+
+ u64 sharedram; /* sharedram is currently set to 0 */
+
+ u64 totalram; /* total main memory size */
+ u64 freeram; /* free main memory size */
+ u64 totalhigh; /* total high memory size */
+ u64 freehigh; /* free high memory size */
+
+ u64 bufferram; /* memory reserved for buffers, free cache */
+ u64 cached; /* size of (used) cache, w/o buffers */
+ u64 totalswap; /* total swap space size */
+ u64 freeswap; /* free swap space */
+
+// New in 2.6 -->
+ u64 pgalloc; /* page allocations */
+ u64 pgfault; /* page faults (major+minor) */
+ u64 pgmajfault; /* page faults (major only) */
+// <-- New in 2.6
+
+} appldata_mem_data;
+
+
+static inline void appldata_debug_print(struct appldata_mem_data *mem_data)
+{
+ P_DEBUG("--- MEM - RECORD ---\n");
+ P_DEBUG("pgpgin = %8lu KB\n", mem_data->pgpgin);
+ P_DEBUG("pgpgout = %8lu KB\n", mem_data->pgpgout);
+ P_DEBUG("pswpin = %8lu Pages\n", mem_data->pswpin);
+ P_DEBUG("pswpout = %8lu Pages\n", mem_data->pswpout);
+ P_DEBUG("pgalloc = %8lu \n", mem_data->pgalloc);
+ P_DEBUG("pgfault = %8lu \n", mem_data->pgfault);
+ P_DEBUG("pgmajfault = %8lu \n", mem_data->pgmajfault);
+ P_DEBUG("sharedram = %8lu KB\n", mem_data->sharedram);
+ P_DEBUG("totalram = %8lu KB\n", mem_data->totalram);
+ P_DEBUG("freeram = %8lu KB\n", mem_data->freeram);
+ P_DEBUG("totalhigh = %8lu KB\n", mem_data->totalhigh);
+ P_DEBUG("freehigh = %8lu KB\n", mem_data->freehigh);
+ P_DEBUG("bufferram = %8lu KB\n", mem_data->bufferram);
+ P_DEBUG("cached = %8lu KB\n", mem_data->cached);
+ P_DEBUG("totalswap = %8lu KB\n", mem_data->totalswap);
+ P_DEBUG("freeswap = %8lu KB\n", mem_data->freeswap);
+ P_DEBUG("sync_count_1 = %u\n", mem_data->sync_count_1);
+ P_DEBUG("sync_count_2 = %u\n", mem_data->sync_count_2);
+ P_DEBUG("timestamp = %lX\n", mem_data->timestamp);
+}
+
+/*
+ * appldata_get_mem_data()
+ *
+ * gather memory data
+ */
+static void appldata_get_mem_data(void *data)
+{
+ /*
+ * don't put large structures on the stack, we are
+ * serialized through the appldata_ops_lock and can use static
+ */
+ static struct sysinfo val;
+ static struct page_state ps;
+ struct appldata_mem_data *mem_data;
+
+ mem_data = data;
+ mem_data->sync_count_1++;
+
+ get_full_page_state(&ps);
+ mem_data->pgpgin = ps.pgpgin >> 1;
+ mem_data->pgpgout = ps.pgpgout >> 1;
+ mem_data->pswpin = ps.pswpin;
+ mem_data->pswpout = ps.pswpout;
+ mem_data->pgalloc = ps.pgalloc_high + ps.pgalloc_normal +
+ ps.pgalloc_dma;
+ mem_data->pgfault = ps.pgfault;
+ mem_data->pgmajfault = ps.pgmajfault;
+
+ si_meminfo(&val);
+ mem_data->sharedram = val.sharedram;
+ mem_data->totalram = P2K(val.totalram);
+ mem_data->freeram = P2K(val.freeram);
+ mem_data->totalhigh = P2K(val.totalhigh);
+ mem_data->freehigh = P2K(val.freehigh);
+ mem_data->bufferram = P2K(val.bufferram);
+ mem_data->cached = P2K(atomic_read(&nr_pagecache) - val.bufferram);
+
+ si_swapinfo(&val);
+ mem_data->totalswap = P2K(val.totalswap);
+ mem_data->freeswap = P2K(val.freeswap);
+
+ mem_data->timestamp = get_clock();
+ mem_data->sync_count_2++;
+#ifdef APPLDATA_DEBUG
+ appldata_debug_print(mem_data);
+#endif
+}
+
+
+static struct appldata_ops ops = {
+ .ctl_nr = CTL_APPLDATA_MEM,
+ .name = "mem",
+ .record_nr = APPLDATA_RECORD_MEM_ID,
+ .size = sizeof(struct appldata_mem_data),
+ .callback = &appldata_get_mem_data,
+ .data = &appldata_mem_data,
+ .owner = THIS_MODULE,
+};
+
+
+/*
+ * appldata_mem_init()
+ *
+ * init_data, register ops
+ */
+static int __init appldata_mem_init(void)
+{
+ int rc;
+
+ P_DEBUG("sizeof(mem) = %lu\n", sizeof(struct appldata_mem_data));
+
+ rc = appldata_register_ops(&ops);
+ if (rc != 0) {
+ P_ERROR("Error registering ops, rc = %i\n", rc);
+ } else {
+ P_DEBUG("%s-ops registered!\n", ops.name);
+ }
+ return rc;
+}
+
+/*
+ * appldata_mem_exit()
+ *
+ * unregister ops
+ */
+static void __exit appldata_mem_exit(void)
+{
+ appldata_unregister_ops(&ops);
+ P_DEBUG("%s-ops unregistered!\n", ops.name);
+}
+
+
+module_init(appldata_mem_init);
+module_exit(appldata_mem_exit);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Gerald Schaefer");
+MODULE_DESCRIPTION("Linux-VM Monitor Stream, MEMORY statistics");