Merge tag 'v2.6.37' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6

[mv-sheeva.git] / arch / x86 / platform / uv / tlb_uv.c

diff --git a/arch/x86/kernel/tlb_uv.c b/arch/x86/platform/uv/tlb_uv.c
similarity index 98%
rename from arch/x86/kernel/tlb_uv.c
rename to arch/x86/platform/uv/tlb_uv.c
index 312ef0292815f1a3a757c10d3f994d67702b3531..ba9caa808a9c1b42c6a616968c57e96769039314 100644 (file)
--- a/arch/x86/kernel/tlb_uv.c
+++ b/arch/x86/platform/uv/tlb_uv.c
@@ -1001,10 +1001,10 @@ static int uv_ptc_seq_show(struct seq_file *file, void *data)
 static ssize_t tunables_read(struct file *file, char __user *userbuf,
                                                size_t count, loff_t *ppos)
 {
-       char buf[300];
+       char *buf;
        int ret;
 
-       ret = snprintf(buf, 300, "%s %s %s\n%d %d %d %d %d %d %d %d %d\n",
+       buf = kasprintf(GFP_KERNEL, "%s %s %s\n%d %d %d %d %d %d %d %d %d\n",
                "max_bau_concurrent plugged_delay plugsb4reset",
                "timeoutsb4reset ipi_reset_limit complete_threshold",
                "congested_response_us congested_reps congested_period",
@@ -1012,7 +1012,12 @@ static ssize_t tunables_read(struct file *file, char __user *userbuf,
                timeoutsb4reset, ipi_reset_limit, complete_threshold,
                congested_response_us, congested_reps, congested_period);
 
-       return simple_read_from_buffer(userbuf, count, ppos, buf, ret);
+       if (!buf)
+               return -ENOMEM;
+
+       ret = simple_read_from_buffer(userbuf, count, ppos, buf, strlen(buf));
+       kfree(buf);
+       return ret;
 }
 
 /*
@@ -1285,6 +1290,7 @@ static const struct file_operations tunables_fops = {
        .open           = tunables_open,
        .read           = tunables_read,
        .write          = tunables_write,
+       .llseek         = default_llseek,
 };
 
 static int __init uv_ptc_init(void)
@@ -1337,8 +1343,8 @@ uv_activation_descriptor_init(int node, int pnode)
         * each bau_desc is 64 bytes; there are 8 (UV_ITEMS_PER_DESCRIPTOR)
         * per cpu; and up to 32 (UV_ADP_SIZE) cpu's per uvhub
         */
-       bau_desc = (struct bau_desc *)kmalloc_node(sizeof(struct bau_desc)*
-               UV_ADP_SIZE*UV_ITEMS_PER_DESCRIPTOR, GFP_KERNEL, node);
+       bau_desc = kmalloc_node(sizeof(struct bau_desc) * UV_ADP_SIZE
+                               * UV_ITEMS_PER_DESCRIPTOR, GFP_KERNEL, node);
        BUG_ON(!bau_desc);
 
        pa = uv_gpa(bau_desc); /* need the real nasid*/
@@ -1396,9 +1402,9 @@ uv_payload_queue_init(int node, int pnode)
        struct bau_payload_queue_entry *pqp_malloc;
        struct bau_control *bcp;
 
-       pqp = (struct bau_payload_queue_entry *) kmalloc_node(
-               (DEST_Q_SIZE + 1) * sizeof(struct bau_payload_queue_entry),
-               GFP_KERNEL, node);
+       pqp = kmalloc_node((DEST_Q_SIZE + 1)
+                          * sizeof(struct bau_payload_queue_entry),
+                          GFP_KERNEL, node);
        BUG_ON(!pqp);
        pqp_malloc = pqp;
 
@@ -1449,7 +1455,7 @@ static void __init uv_init_uvhub(int uvhub, int vector)
         * the below initialization can't be in firmware because the
         * messaging IRQ will be determined by the OS
         */
-       apicid = uvhub_to_first_apicid(uvhub);
+       apicid = uvhub_to_first_apicid(uvhub) | uv_apicid_hibits;
        uv_write_global_mmr64(pnode, UVH_BAU_DATA_CONFIG,
                                      ((apicid << 32) | vector));
 }
@@ -1514,8 +1520,7 @@ static void __init uv_init_per_cpu(int nuvhubs)
 
        timeout_us = calculate_destination_timeout();
 
-       uvhub_descs = (struct uvhub_desc *)
-               kmalloc(nuvhubs * sizeof(struct uvhub_desc), GFP_KERNEL);
+       uvhub_descs = kmalloc(nuvhubs * sizeof(struct uvhub_desc), GFP_KERNEL);
        memset(uvhub_descs, 0, nuvhubs * sizeof(struct uvhub_desc));
        uvhub_mask = kzalloc((nuvhubs+7)/8, GFP_KERNEL);
        for_each_present_cpu(cpu) {