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| author | Andreas Herrmann <andreas.herrmann3@amd.com> | 2008-06-20 22:05:37 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-06-24 13:05:55 +0200 |
| commit | f6887264deba4cd991f0ca006918dcff4c939021 (patch) | |
| tree | 5becb05dfc2b328b0e8f90594f7a86cf0da69d52 /arch/x86/mm/pat.c | |
| parent | 3e9c83b309fd7cbf1d9b801d0d5877c040e30420 (diff) | |
| download | kernel-crypto-f6887264deba4cd991f0ca006918dcff4c939021.tar.gz kernel-crypto-f6887264deba4cd991f0ca006918dcff4c939021.tar.xz kernel-crypto-f6887264deba4cd991f0ca006918dcff4c939021.zip | |
x86: pat.c consolidate list_add handling in reserve_memtype
Signed-off-by: Andreas Herrmann <andreas.herrmann3@amd.com>
Cc: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Cc: Suresh B Siddha <suresh.b.siddha@intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86/mm/pat.c')
| -rw-r--r-- | arch/x86/mm/pat.c | 21 |
1 files changed, 8 insertions, 13 deletions
diff --git a/arch/x86/mm/pat.c b/arch/x86/mm/pat.c index 1118288f8fe..49dcd9652ec 100644 --- a/arch/x86/mm/pat.c +++ b/arch/x86/mm/pat.c @@ -198,6 +198,7 @@ int reserve_memtype(u64 start, u64 end, unsigned long req_type, { struct memtype *new, *entry; unsigned long actual_type; + struct list_head *where; int err = 0; BUG_ON(start >= end); /* end is exclusive */ @@ -251,13 +252,12 @@ int reserve_memtype(u64 start, u64 end, unsigned long req_type, spin_lock(&memtype_lock); /* Search for existing mapping that overlaps the current range */ + where = NULL; list_for_each_entry(entry, &memtype_list, nd) { struct memtype *saved_ptr; if (entry->start >= end) { - dprintk("New Entry\n"); - list_add(&new->nd, entry->nd.prev); - new = NULL; + where = entry->nd.prev; break; } @@ -295,9 +295,7 @@ int reserve_memtype(u64 start, u64 end, unsigned long req_type, dprintk("Overlap at 0x%Lx-0x%Lx\n", saved_ptr->start, saved_ptr->end); - /* No conflict. Go ahead and add this new entry */ - list_add(&new->nd, saved_ptr->nd.prev); - new = NULL; + where = saved_ptr->nd.prev; break; } @@ -335,9 +333,7 @@ int reserve_memtype(u64 start, u64 end, unsigned long req_type, dprintk("Overlap at 0x%Lx-0x%Lx\n", saved_ptr->start, saved_ptr->end); - /* No conflict. Go ahead and add this new entry */ - list_add(&new->nd, &saved_ptr->nd); - new = NULL; + where = &saved_ptr->nd; break; } } @@ -354,11 +350,10 @@ int reserve_memtype(u64 start, u64 end, unsigned long req_type, return err; } - if (new) { - /* No conflict. Not yet added to the list. Add to the tail */ + if (where) + list_add(&new->nd, where); + else list_add_tail(&new->nd, &memtype_list); - dprintk("New Entry\n"); - } spin_unlock(&memtype_lock); |