anv: use os_get_available_system_memory()

Replace local get_available_system_memory() function with
os_get_available_system_memory().

Fixes: b80930a6fea ("anv: add support for VK_EXT_memory_budget")
Signed-off-by: Jonathan Gray <jsg@jsg.id.au>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6517>

diff --git a/src/intel/vulkan/anv_device.c b/src/intel/vulkan/anv_device.c
index f670be5cc5ccafe24e88b5de5c6ca4e659859c67..7470d0cf17f64ba52117d8dcc8e91a37f862c4fa 100644 (file)
--- a/src/intel/vulkan/anv_device.c
+++ b/src/intel/vulkan/anv_device.c
@@ -308,29 +308,6 @@ anv_physical_device_free_disk_cache(struct anv_physical_device *device)
 #endif
 }
 
-static uint64_t
-get_available_system_memory()
-{
-   char *meminfo = os_read_file("/proc/meminfo", NULL);
-   if (!meminfo)
-      return 0;
-
-   char *str = strstr(meminfo, "MemAvailable:");
-   if (!str) {
-      free(meminfo);
-      return 0;
-   }
-
-   uint64_t kb_mem_available;
-   if (sscanf(str, "MemAvailable: %" PRIx64, &kb_mem_available) == 1) {
-      free(meminfo);
-      return kb_mem_available << 10;
-   }
-
-   free(meminfo);
-   return 0;
-}
-
 static VkResult
 anv_physical_device_try_create(struct anv_instance *instance,
                                drmDevicePtr drm_device,
@@ -495,7 +472,8 @@ anv_physical_device_try_create(struct anv_instance *instance,
    device->has_reg_timestamp = anv_gem_reg_read(fd, TIMESTAMP | I915_REG_READ_8B_WA,
                                                 &u64_ignore) == 0;
 
-   device->has_mem_available = get_available_system_memory() != 0;
+   uint64_t avail_mem;
+   device->has_mem_available = os_get_available_system_memory(&avail_mem);
 
    device->always_flush_cache =
       driQueryOptionb(&instance->dri_options, "always_flush_cache");
@@ -2240,8 +2218,10 @@ anv_get_memory_budget(VkPhysicalDevice physicalDevice,
                       VkPhysicalDeviceMemoryBudgetPropertiesEXT *memoryBudget)
 {
    ANV_FROM_HANDLE(anv_physical_device, device, physicalDevice);
-   uint64_t sys_available = get_available_system_memory();
-   assert(sys_available > 0);
+   uint64_t sys_available;
+   ASSERTED bool has_available_memory =
+      os_get_available_system_memory(&sys_available);
+   assert(has_available_memory);
 
    VkDeviceSize total_heaps_size = 0;
    for (size_t i = 0; i < device->memory.heap_count; i++)