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| author | Mole Shang <[email protected]> | 2024-01-18 17:35:27 +0800 |
|---|---|---|
| committer | Mole Shang <[email protected]> | 2024-02-05 18:10:56 +0800 |
| commit | 283d5ab4c964ab525e45fcade06d6fd7e977c43e (patch) | |
| tree | bc44a1e2c447fb965cf5d5c2cfdcfa71658dbbbf /kernel/kalloc.c | |
| parent | 0d6a64fa06ce6aae729fa05a539eadd88fa59007 (diff) | |
| download | xv6-labs-283d5ab4c964ab525e45fcade06d6fd7e977c43e.tar.gz xv6-labs-283d5ab4c964ab525e45fcade06d6fd7e977c43e.tar.bz2 xv6-labs-283d5ab4c964ab525e45fcade06d6fd7e977c43e.zip | |
lab syscall: finish
Conflicts:
kernel/syscall.c
kernel/syscall.h
user/user.h
user/usys.pl
Diffstat (limited to 'kernel/kalloc.c')
| -rw-r--r-- | kernel/kalloc.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/kernel/kalloc.c b/kernel/kalloc.c index 0699e7e..c2fdb86 100644 --- a/kernel/kalloc.c +++ b/kernel/kalloc.c @@ -80,3 +80,17 @@ kalloc(void) memset((char*)r, 5, PGSIZE); // fill with junk return (void*)r; } + +int +get_freemem(void) +{ + int n; + struct run *r; + + acquire(&kmem.lock); + for (n = 0, r = kmem.freelist; r; r = r->next) + n++; + release(&kmem.lock); + + return n * PGSIZE; +} |