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x86/platform: Remove incorrect error message in x86_default_fixup_cpu_id()

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It's only called from amd.c:srat_detect_node(). The introduced
condition for calling the fixup code is true for all AMD
multi-node processors, e.g. Magny-Cours and Interlagos. There we
have 2 NUMA nodes on one socket. Thus there are cores having
different numa-node-id but with equal phys_proc_id.

There is no point to print error messages in such a situation.

The confusing/misleading error message was introduced with
commit 64be4c1c24 ("x86: Add
x86_init platform override to fix up NUMA core numbering").

Remove the default fixup function (especially the error message)
and replace it by a NULL pointer check, move the
Numascale-specific condition for calling the fixup into the
fixup-function itself and slightly adapt the comment.

Signed-off-by: Andreas Herrmann <andreas.herrmann3@amd.com>
Acked-by: Borislav Petkov <borislav.petkov@amd.com>
Cc: <stable@kernel.org>
Cc: <sp@numascale.com>
Cc: <bp@amd64.org>
Cc: <daniel@numascale-asia.com>
Link: http://lkml.kernel.org/r/20120402160648.GR27684@alberich.amd.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Andreas Herrmann 2012-04-02 18:06:48 +02:00 committed by Ingo Molnar
parent b1994304fc
commit 68894632af
5 changed files with 9 additions and 16 deletions
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1
arch/x86/include/asm/x86_init.h
View File

@ -195,6 +195,5 @@ extern struct x86_msi_ops x86_msi;
extern void x86_init_noop(void);
extern void x86_init_uint_noop(unsigned int unused);
extern void x86_default_fixup_cpu_id(struct cpuinfo_x86 *c, int node);
#endif

7
arch/x86/kernel/apic/apic_numachip.c
View File

@ -207,8 +207,11 @@ static void __init map_csrs(void)
static void fixup_cpu_id(struct cpuinfo_x86 *c, int node)
{
c->phys_proc_id = node;
per_cpu(cpu_llc_id, smp_processor_id()) = node;
if (c->phys_proc_id != node) {
c->phys_proc_id = node;
per_cpu(cpu_llc_id, smp_processor_id()) = node;
}
}
static int __init numachip_system_init(void)

7
arch/x86/kernel/cpu/amd.c
View File

@ -353,10 +353,11 @@ static void __cpuinit srat_detect_node(struct cpuinfo_x86 *c)
node = per_cpu(cpu_llc_id, cpu);
/*
* If core numbers are inconsistent, it's likely a multi-fabric platform,
* so invoke platform-specific handler
* On multi-fabric platform (e.g. Numascale NumaChip) a
* platform-specific handler needs to be called to fixup some
* IDs of the CPU.
*/
if (c->phys_proc_id != node)
if (x86_cpuinit.fixup_cpu_id)
x86_cpuinit.fixup_cpu_id(c, node);
if (!node_online(node)) {

9
arch/x86/kernel/cpu/common.c
View File

@ -1162,15 +1162,6 @@ static void dbg_restore_debug_regs(void)
#define dbg_restore_debug_regs()
#endif /* ! CONFIG_KGDB */
/*
* Prints an error where the NUMA and configured core-number mismatch and the
* platform didn't override this to fix it up
*/
void __cpuinit x86_default_fixup_cpu_id(struct cpuinfo_x86 *c, int node)
{
pr_err("NUMA core number %d differs from configured core number %d\n", node, c->phys_proc_id);
}
/*
* cpu_init() initializes state that is per-CPU. Some data is already
* initialized (naturally) in the bootstrap process, such as the GDT

1
arch/x86/kernel/x86_init.c
View File

@ -93,7 +93,6 @@ struct x86_init_ops x86_init __initdata = {
struct x86_cpuinit_ops x86_cpuinit __cpuinitdata = {
.early_percpu_clock_init = x86_init_noop,
.setup_percpu_clockev = setup_secondary_APIC_clock,
.fixup_cpu_id = x86_default_fixup_cpu_id,
};
static void default_nmi_init(void) { };