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Kernel+ProcessManager: Expose the number of kmalloc/kfree calls.
This will be very helpful in tracking down unwanted kmalloc traffic. :^)
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parent
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commit
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5 changed files with 25 additions and 8 deletions
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@ -8,6 +8,7 @@
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#include "Console.h"
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#include "Scheduler.h"
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#include <Kernel/PCI.h>
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#include <Kernel/kmalloc.h>
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#include <AK/StringBuilder.h>
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#include <LibC/errno_numbers.h>
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@ -558,14 +559,16 @@ ByteBuffer procfs$memstat(InodeIdentifier)
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{
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InterruptDisabler disabler;
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StringBuilder builder;
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builder.appendf("%u,%u,%u,%u,%u,%u,%u\n",
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builder.appendf("%u,%u,%u,%u,%u,%u,%u,%u,%u\n",
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kmalloc_sum_eternal,
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sum_alloc,
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sum_free,
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MM.user_physical_pages_in_existence() - MM.m_free_physical_pages.size(),
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MM.m_free_physical_pages.size(),
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MM.super_physical_pages_in_existence() - MM.m_free_supervisor_physical_pages.size(),
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MM.m_free_supervisor_physical_pages.size()
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MM.m_free_supervisor_physical_pages.size(),
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g_kmalloc_call_count,
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g_kfree_call_count
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);
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return builder.to_byte_buffer();
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}
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@ -33,6 +33,9 @@ volatile size_t sum_alloc = 0;
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volatile size_t sum_free = POOL_SIZE;
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volatile size_t kmalloc_sum_eternal = 0;
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dword g_kmalloc_call_count;
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dword g_kfree_call_count;
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static byte* s_next_eternal_ptr;
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static byte* s_end_of_eternal_range;
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@ -90,6 +93,7 @@ void* kmalloc_page_aligned(size_t size)
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void* kmalloc_impl(size_t size)
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{
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InterruptDisabler disabler;
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++g_kmalloc_call_count;
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// We need space for the allocation_t structure at the head of the block.
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size_t real_size = size + sizeof(allocation_t);
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@ -153,6 +157,7 @@ void* kmalloc_impl(size_t size)
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void kfree(void *ptr)
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{
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++g_kfree_call_count;
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if (!ptr)
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return;
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@ -18,6 +18,8 @@ extern volatile size_t sum_alloc;
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extern volatile size_t sum_free;
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extern volatile size_t kmalloc_sum_eternal;
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extern volatile size_t kmalloc_sum_page_aligned;
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extern dword g_kmalloc_call_count;
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extern dword g_kfree_call_count;
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inline void* operator new(size_t, void* p) { return p; }
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inline void* operator new[](size_t, void* p) { return p; }
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