Use of information interface to enhance output of /proc/v3vee-/v3-guests in Linux

[palacios.releases.git] / linux_module / palacios-stubs.c

diff --git a/linux_module/palacios-stubs.c b/linux_module/palacios-stubs.c
index 5ced6d2..5bf69a1 100644 (file)
--- a/linux_module/palacios-stubs.c
+++ b/linux_module/palacios-stubs.c
@@ -268,10 +268,13 @@ palacios_xcall(
     return;
 }
 
+
+#define MAX_THREAD_NAME 32
+
 struct lnx_thread_arg {
     int (*fn)(void * arg);
     void * arg;
-    char * name;
+    char name[MAX_THREAD_NAME];
 };
 
 static int lnx_thread_target(void * arg) {
@@ -316,9 +319,10 @@ palacios_start_kernel_thread(
 
     thread_info->fn = fn;
     thread_info->arg = arg;
-    thread_info->name = thread_name;
+    strncpy(thread_info->name,thread_name,MAX_THREAD_NAME);
+    thread_info->name[MAX_THREAD_NAME-1] =0;
 
-    return kthread_run( lnx_thread_target, thread_info, thread_name );
+    return kthread_run( lnx_thread_target, thread_info, thread_info->name );
 }
 
 
@@ -340,13 +344,13 @@ palacios_start_thread_on_cpu(int cpu_id,
 
     thread_info->fn = fn;
     thread_info->arg = arg;
-    thread_info->name = thread_name;
+    strncpy(thread_info->name,thread_name,MAX_THREAD_NAME);
+    thread_info->name[MAX_THREAD_NAME-1] =0;
 
-
-    thread = kthread_create( lnx_thread_target, thread_info, thread_name );
+    thread = kthread_create( lnx_thread_target, thread_info, thread_info->name );
 
     if (IS_ERR(thread)) {
-       WARNING("Palacios error creating thread: %s\n", thread_name);
+       WARNING("Palacios error creating thread: %s\n", thread_info->name);
        palacios_free(thread_info);
        return NULL;
     }
@@ -563,19 +567,25 @@ palacios_yield_cpu(void)
  * Given now immediately if there is no other thread that is runnable
  * And there is no real bound on how long it will yield
  */
-void palacios_yield_cpu_timed(unsigned int us)
+void palacios_sleep_cpu(unsigned int us)
 {
 
-    unsigned int uspj = 1000000U/HZ;
-   
-    unsigned int jiffies = us/uspj + ((us%uspj) !=0);  // ceiling 
-
     set_current_state(TASK_INTERRUPTIBLE);
-    
-    schedule_timeout(jiffies);
-
+    if (us) {
+        unsigned int uspj = 1000000U/HZ;
+        unsigned int jiffies = us/uspj + ((us%uspj) !=0);  // ceiling 
+        schedule_timeout(jiffies);
+    } else {
+        schedule();
+    }
+    return;
 }
 
+void palacios_wakeup_cpu(void *thread)
+{
+    wake_up_process(thread);
+    return;
+}
 
 /**
  * Allocates a mutex.
@@ -665,7 +675,8 @@ static struct v3_os_hooks palacios_os_hooks = {
        .get_cpu_khz            = palacios_get_cpu_khz,
        .start_kernel_thread    = palacios_start_kernel_thread,
        .yield_cpu              = palacios_yield_cpu,
-       .yield_cpu_timed        = palacios_yield_cpu_timed,
+       .sleep_cpu              = palacios_sleep_cpu,
+       .wakeup_cpu             = palacios_wakeup_cpu,
        .mutex_alloc            = palacios_mutex_alloc,
        .mutex_free             = palacios_mutex_free,
        .mutex_lock             = palacios_mutex_lock,