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Reduce kmalloc() traffic in directory iteration.

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Pass the file name in a stack-allocated buffer instead of using an AK::String
when iterating directories. This dramatically reduces the amount of cycles
spent traversing the filesystem.
This commit is contained in:
Andreas Kling 2018-11-13 00:17:30 +01:00
parent 5e8e554f94
commit 19b9401487
10 changed files with 60 additions and 40 deletions
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3
Kernel/i386.h
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@ -239,8 +239,7 @@ public:
dword end_msw;
read_tsc(end_lsw, end_msw);
if (m_start_msw != end_msw) {
dbgprintf("differing msw's\n");
asm volatile("cli;hlt");
dbgprintf("stopwatch: differing msw, no result for %s\n", m_name);
}
dword diff = end_lsw - m_start_lsw;
dbgprintf("Stopwatch(%s): %u ticks\n", m_name, diff);