[PATCH v2 16/20] x86, ACPI, numa, ia64: split SLIT handling out

Yinghai Lu
2013-03-10T06:47:51Z

We need to handle slit later, as it need to allocate buffer for distance
matrix. Also we do not need SLIT info before init_mem_mapping.

So move SLIT parsing later.

x86_acpi_numa_init become x86_acpi_numa_init_srat/x86_acpi_numa_init_slit.

It should not break ia64 by replacing acpi_numa_init with
acpi_numa_init_srat/acpi_numa_init_slit/acpi_num_arch_fixup.

-v2: Change name to acpi_numa_init_srat/acpi_numa_init_slit according tj.
remove the reset_numa_distance() in numa_init(), as get we only set
distance in slit handling.

Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Cc: Rafael J. Wysocki <rjw@sisk.pl>
Cc: linux-acpi@vger.kernel.org
Cc: Tony Luck <tony.luck@intel.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: linux-ia64@vger.kernel.org
---
arch/ia64/kernel/setup.c | 4 +++-
arch/x86/include/asm/acpi.h | 3 ++-
arch/x86/mm/numa.c | 14 ++++++++++++--
arch/x86/mm/srat.c | 11 +++++++----
drivers/acpi/numa.c | 13 +++++++------
include/linux/acpi.h | 3 ++-
6 files changed, 33 insertions(+), 15 deletions(-)

diff --git a/arch/ia64/kernel/setup.c b/arch/ia64/kernel/setup.c
index 2029cc0..6a2efb5 100644
--- a/arch/ia64/kernel/setup.c
+++ b/arch/ia64/kernel/setup.c
@@ -558,7 +558,9 @@ setup_arch (char **cmdline_p)
acpi_table_init();
early_acpi_boot_init();
# ifdef CONFIG_ACPI_NUMA
- acpi_numa_init();
+ acpi_numa_init_srat();
+ acpi_numa_init_slit();
+ acpi_numa_arch_fixup();
# ifdef CONFIG_ACPI_HOTPLUG_CPU
prefill_possible_map();
# endif
diff --git a/arch/x86/include/asm/acpi.h b/arch/x86/include/asm/acpi.h
index b31bf97..651db0b 100644
--- a/arch/x86/include/asm/acpi.h
+++ b/arch/x86/include/asm/acpi.h
@@ -178,7 +178,8 @@ static inline void disable_acpi(void) { }

#ifdef CONFIG_ACPI_NUMA
extern int acpi_numa;
-extern int x86_acpi_numa_init(void);
+int x86_acpi_numa_init_srat(void);
+void x86_acpi_numa_init_slit(void);
#endif /* CONFIG_ACPI_NUMA */

#define acpi_unlazy_tlb(x) leave_mm(x)
diff --git a/arch/x86/mm/numa.c b/arch/x86/mm/numa.c
index 90fd123..182e085 100644
--- a/arch/x86/mm/numa.c
+++ b/arch/x86/mm/numa.c
@@ -598,7 +598,6 @@ static int __init numa_init(int (*init_func)(void))

nodes_clear(numa_nodes_parsed);
memset(&numa_meminfo, 0, sizeof(numa_meminfo));
- numa_reset_distance();

ret = init_func();
if (ret < 0)
@@ -636,6 +635,10 @@ static int __init dummy_numa_init(void)
return 0;
}

+#ifdef CONFIG_ACPI_NUMA
+static bool srat_used __initdata;
+#endif
+
/**
* x86_numa_init - Initialize NUMA
*
@@ -651,8 +654,10 @@ static void __init early_x86_numa_init(void)
return;
#endif
#ifdef CONFIG_ACPI_NUMA
- if (!numa_init(x86_acpi_numa_init))
+ if (!numa_init(x86_acpi_numa_init_srat)) {
+ srat_used = true;
return;
+ }
#endif
#ifdef CONFIG_AMD_NUMA
if (!numa_init(amd_numa_init))
@@ -670,6 +675,11 @@ void __init x86_numa_init(void)

early_x86_numa_init();

+#ifdef CONFIG_ACPI_NUMA
+ if (srat_used)
+ x86_acpi_numa_init_slit();
+#endif
+
numa_emulation(&numa_meminfo, numa_distance_cnt);

node_possible_map = numa_nodes_parsed;
diff --git a/arch/x86/mm/srat.c b/arch/x86/mm/srat.c
index cdd0da9..443f9ef 100644
--- a/arch/x86/mm/srat.c
+++ b/arch/x86/mm/srat.c
@@ -185,14 +185,17 @@ out_err:
return -1;
}

-void __init acpi_numa_arch_fixup(void) {}
-
-int __init x86_acpi_numa_init(void)
+int __init x86_acpi_numa_init_srat(void)
{
int ret;

- ret = acpi_numa_init();
+ ret = acpi_numa_init_srat();
if (ret < 0)
return ret;
return srat_disabled() ? -EINVAL : 0;
}
+
+void __init x86_acpi_numa_init_slit(void)
+{
+ acpi_numa_init_slit();
+}
diff --git a/drivers/acpi/numa.c b/drivers/acpi/numa.c
index 33e609f..6460db4 100644
--- a/drivers/acpi/numa.c
+++ b/drivers/acpi/numa.c
@@ -282,7 +282,7 @@ acpi_table_parse_srat(enum acpi_srat_type id,
handler, max_entries);
}

-int __init acpi_numa_init(void)
+int __init acpi_numa_init_srat(void)
{
int cnt = 0;

@@ -303,11 +303,6 @@ int __init acpi_numa_init(void)
NR_NODE_MEMBLKS);
}

- /* SLIT: System Locality Information Table */
- acpi_table_parse(ACPI_SIG_SLIT, acpi_parse_slit);
-
- acpi_numa_arch_fixup();
-
if (cnt < 0)
return cnt;
else if (!parsed_numa_memblks)
@@ -315,6 +310,12 @@ int __init acpi_numa_init(void)
return 0;
}

+void __init acpi_numa_init_slit(void)
+{
+ /* SLIT: System Locality Information Table */
+ acpi_table_parse(ACPI_SIG_SLIT, acpi_parse_slit);
+}
+
int acpi_get_pxm(acpi_handle h)
{
unsigned long long pxm;
diff --git a/include/linux/acpi.h b/include/linux/acpi.h
index 4b943e6..4a78235 100644
--- a/include/linux/acpi.h
+++ b/include/linux/acpi.h
@@ -85,7 +85,8 @@ int early_acpi_boot_init(void);
int acpi_boot_init (void);
void acpi_boot_table_init (void);
int acpi_mps_check (void);
-int acpi_numa_init (void);
+int acpi_numa_init_srat(void);
+void acpi_numa_init_slit(void);

int acpi_table_init (void);
int acpi_table_parse(char *id, acpi_tbl_table_handler handler);
--
1.7.10.4