diff options
| author | Cyrill Gorcunov <gorcunov@gmail.com> | 2009-11-10 01:06:59 +0300 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-11-10 05:52:07 +0100 |
| commit | 7abc07531383ac7f727cc9d44e1360a829f2082e (patch) | |
| tree | f93b92f86c527cf5d0e12a3b64a7dbcd368fbd95 /arch/x86/kernel/apic/summit_32.c | |
| parent | f4a70c55376683213229af7266dc57ad81aee354 (diff) | |
x86: apic: Do not use stacked physid_mask_t
We should not use physid_mask_t as a stack based
variable in apic code. This type depends on MAX_APICS
parameter which may be huge enough.
Especially it became a problem with apic NOOP driver which
is portable between 32 bit and 64 bit environment
(where we have really huge MAX_APICS).
So apic driver should operate with pointers and a caller
in turn should aware of allocation physid_mask_t variable.
As a side (but positive) effect -- we may use already
implemented physid_set_mask_of_physid function eliminating
default_apicid_to_cpu_present completely.
Note that physids_coerce and physids_promote turned into static
inline from macro (since macro hides the fact that parameter is
being interpreted as unsigned long, make it explicit).
Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Cc: Yinghai Lu <yinghai@kernel.org>
Cc: Maciej W. Rozycki <macro@linux-mips.org>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
LKML-Reference: <20091109220659.GA5568@lenovo>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86/kernel/apic/summit_32.c')
| -rw-r--r-- | arch/x86/kernel/apic/summit_32.c | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/arch/x86/kernel/apic/summit_32.c b/arch/x86/kernel/apic/summit_32.c index 645ecc4ff0be..9b419263d90d 100644 --- a/arch/x86/kernel/apic/summit_32.c +++ b/arch/x86/kernel/apic/summit_32.c @@ -183,7 +183,7 @@ static const struct cpumask *summit_target_cpus(void) return cpumask_of(0); } -static unsigned long summit_check_apicid_used(physid_mask_t bitmap, int apicid) +static unsigned long summit_check_apicid_used(physid_mask_t *map, int apicid) { return 0; } @@ -261,15 +261,15 @@ static int summit_cpu_present_to_apicid(int mps_cpu) return BAD_APICID; } -static physid_mask_t summit_ioapic_phys_id_map(physid_mask_t phys_id_map) +static void summit_ioapic_phys_id_map(physid_mask_t *phys_id_map, physid_mask_t *retmap) { /* For clustered we don't have a good way to do this yet - hack */ - return physids_promote(0x0F); + physids_promote(0x0FL, retmap); } -static physid_mask_t summit_apicid_to_cpu_present(int apicid) +static void summit_apicid_to_cpu_present(int apicid, physid_mask_t *retmap) { - return physid_mask_of_physid(0); + physid_set_mask_of_physid(0, retmap); } static int summit_check_phys_apicid_present(int physical_apicid) |