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turnip: Cargo cult the Intel heap size functionality.

This commit is contained in:
Bas Nieuwenhuizen 2018-08-17 14:35:59 +02:00 committed by Chia-I Wu
parent 462b693d94
commit 7be2e1fc37
1 changed files with 18 additions and 5 deletions
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23
src/freedreno/vulkan/tu_device.c
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@ -34,6 +34,7 @@
#include <fcntl.h>
#include <stdbool.h>
#include <string.h>
#include <sys/sysinfo.h>
#include <unistd.h>
#include <xf86drm.h>
@ -875,11 +876,23 @@ tu_GetPhysicalDeviceQueueFamilyProperties2(
}
static uint64_t
tu_get_system_memory_size()
tu_get_system_heap_size()
{
uint64_t pages = sysconf(_SC_PHYS_PAGES);
uint64_t page_size = sysconf(_SC_PAGE_SIZE);
return pages * page_size;
struct sysinfo info;
sysinfo(&info);
uint64_t total_ram = (uint64_t)info.totalram * (uint64_t)info.mem_unit;
/* We don't want to burn too much ram with the GPU. If the user has 4GiB
* or less, we use at most half. If they have more than 4GiB, we use 3/4.
*/
uint64_t available_ram;
if (total_ram <= 4ull * 1024ull * 1024ull * 1024ull)
available_ram = total_ram / 2;
else
available_ram = total_ram * 3 / 4;
return available_ram;
}
void
@ -888,7 +901,7 @@ tu_GetPhysicalDeviceMemoryProperties(
VkPhysicalDeviceMemoryProperties *pMemoryProperties)
{
pMemoryProperties->memoryHeapCount = 1;
pMemoryProperties->memoryHeaps[0].size = tu_get_system_memory_size();
pMemoryProperties->memoryHeaps[0].size = tu_get_system_heap_size();
pMemoryProperties->memoryHeaps[0].flags = VK_MEMORY_HEAP_DEVICE_LOCAL_BIT;
pMemoryProperties->memoryTypeCount = 1;