Changeset 431c402 in mainline

Timestamp:

2017-09-04T20:08:28Z (7 years ago)

Author:

Jakub Jermar <jakub@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

e5f5ce0

Parents:

fa32c9f

Message:

Create a slab cache for allocating irq_t structures

Location:

kernel/generic

Files:

• include/ddi/irq.h (modified) (2 diffs)
• src/ddi/irq.c (modified) (2 diffs)
• src/ipc/irq.c (modified) (2 diffs)

kernel/generic/include/ddi/irq.h

@@ -43 +43 @@
 #include <proc/task.h>
 #include <ipc/ipc.h>
+#include <mm/slab.h>
 
 typedef enum {
@@ -139 +140 @@
 extern hash_table_t irq_uspace_hash_table;
 
+extern slab_cache_t *irq_slab;
+
 extern inr_t last_inr;
 

kernel/generic/src/ddi/irq.c

@@ -49 +49 @@
 #include <arch.h>
 
+slab_cache_t *irq_slab = NULL;
+
 /** Spinlock protecting the kernel IRQ hash table
  *
@@ -95 +97 @@
         buckets = chains;
         last_inr = inrs - 1;
+
+        irq_slab = slab_cache_create("irq_t", sizeof(irq_t), 0, NULL, NULL,
+            FRAME_ATOMIC);
+        assert(irq_slab);
 
         hash_table_create(&irq_uspace_hash_table, chains, 2, &irq_ht_ops);

kernel/generic/src/ipc/irq.c

@@ -308 +308 @@
                 return handle;
         
-        irq_t *irq = (irq_t *) malloc(sizeof(irq_t), FRAME_ATOMIC);
+        irq_t *irq = (irq_t *) slab_alloc(irq_slab, FRAME_ATOMIC);
         if (!irq) {
                 cap_free(TASK, handle);
@@ -384 +384 @@
         
         /* Free up the IRQ capability and the underlying kernel object. */
-        free(cap->kobject);
+        slab_free(irq_slab, cap->kobject);
         cap_free(TASK, handle);