The patch titled
acpi: expose _SUN in /proc/acpi/processor/<...>/info
has been added to the -mm tree. Its filename is
acpi-expose-_sun-in-proc-acpi-processor-info.patch
*** Remember to use Documentation/SubmitChecklist when testing your code ***
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
------------------------------------------------------
Subject: acpi: expose _SUN in /proc/acpi/processor/<...>/info
From: Alex Chiang <achiang@xxxxxx>
On platforms that provide _SUN for the processor object, higher
level software can consume the data to learn physical topology
information, so let's expose it.
Platforms that do not implement _SUN will see <not supported>.
Signed-off-by: Alex Chiang <achiang@xxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
drivers/acpi/processor_core.c | 11 +++++++++++
include/acpi/processor.h | 1 +
2 files changed, 12 insertions(+)
diff -puN drivers/acpi/processor_core.c~acpi-expose-_sun-in-proc-acpi-processor-info drivers/acpi/processor_core.c
--- a/drivers/acpi/processor_core.c~acpi-expose-_sun-in-proc-acpi-processor-info
+++ a/drivers/acpi/processor_core.c
@@ -302,6 +302,11 @@ static int acpi_processor_info_seq_show(
pr->flags.throttling ? "yes" : "no",
pr->flags.limit ? "yes" : "no");
+ if (pr->sun == -1)
+ seq_printf(seq, "slot user number: <not supported>\n");
+ else
+ seq_printf(seq, "slot user number: %d\n", (int)pr->sun);
+
end:
return 0;
}
@@ -590,6 +595,12 @@ static int acpi_processor_get_info(struc
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Processor [%d:%d]\n", pr->id,
pr->acpi_id));
+ status = acpi_evaluate_object(pr->handle, "_SUN", NULL, &buffer);
+ if (ACPI_FAILURE(status))
+ object.integer.value = -1;
+
+ pr->sun = object.integer.value;
+
if (!object.processor.pblk_address)
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "No PBLK (NULL address)\n"));
else if (object.processor.pblk_length != 6)
diff -puN include/acpi/processor.h~acpi-expose-_sun-in-proc-acpi-processor-info include/acpi/processor.h
--- a/include/acpi/processor.h~acpi-expose-_sun-in-proc-acpi-processor-info
+++ a/include/acpi/processor.h
@@ -210,6 +210,7 @@ struct acpi_processor {
u32 acpi_id;
u32 id;
u32 pblk;
+ acpi_native_int sun;
int performance_platform_limit;
int throttling_platform_limit;
/* 0 - states 0..n-th state available */
_
Patches currently in -mm which might be from achiang@xxxxxx are
acpi-expose-_sun-in-proc-acpi-processor-info.patch
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