Hello Yicong,
On 11/14/24 15:11, Yicong Yang wrote:
From: Yicong Yang
Currently if architectures want to support HOTPLUG_SMT they need to
provide a topology_is_primary_thread() telling the framework which
thread in the SMT cannot offline. However arm64 doesn't have a
restriction on which thre
On 10/30/24 13:54, Yicong Yang wrote:
From: Yicong Yang
For ACPI we'll build the topology from PPTT and we cannot directly
get the SMT number of each core. Instead using a temporary xarray
to record the heterogeneous information (from ACPI_PPTT_ACPI_IDENTICAL)
and SMT information of the firs
On 10/31/24 13:17, Yicong Yang wrote:
On 2024/10/30 22:55, Thomas Gleixner wrote:
On Wed, Oct 30 2024 at 20:54, Yicong Yang wrote:
+#ifndef topology_is_primary_thread
+#define topology_is_primary_thread topology_is_primary_thread
Please do not glue defines and functions together w/o a n
Hello Yicong,
On 10/15/24 04:18, Yicong Yang wrote:
From: Yicong Yang
For ACPI we'll build the topology from PPTT and we cannot directly
get the SMT number of each core. Instead using a temporary xarray
to record the heterogeneous information (from ACPI_PPTT_ACPI_IDENTICAL)
and SMT information
Hello Yicong,
On 10/15/24 04:18, Yicong Yang wrote:
From: Yicong Yang
On building the topology from the devicetree, we've already
gotten the SMT thread number of each core. Update the largest
SMT thread number and enable the SMT control by the end of
topology parsing.
The core's SMT control p
Hello Yicong,
Wondering if we can avoid this 2nd loop. Greg express the worries of looping
twice on large scale
system in v1. Maybe we could use the hetero_id and get the necessary
information in one loop, I need
further think.
I found this comments (not sure this is what you are refering to
Hello Yicong
On 8/30/24 11:35, Yicong Yang wrote:
On 2024/8/29 20:46, Pierre Gondois wrote:
Hello Yicong,
On 8/29/24 09:40, Yicong Yang wrote:
Hi Pierre,
On 2024/8/27 23:40, Pierre Gondois wrote:
Hello Yicong,
IIUC we are looking for the maximum number of threads a CPU can have
in the
Hello Yicong,
On 8/29/24 09:40, Yicong Yang wrote:
Hi Pierre,
On 2024/8/27 23:40, Pierre Gondois wrote:
Hello Yicong,
IIUC we are looking for the maximum number of threads a CPU can have
in the platform. But is is actually possible to have a platform with
CPUs not having the same number of
Hello Yicong,
IIUC we are looking for the maximum number of threads a CPU can have
in the platform. But is is actually possible to have a platform with
CPUs not having the same number of threads ?
For instance kernel/cpu.c::cpu_smt_num_threads_valid() will check
that the number of threads is eith
Hello Yicong,
Is it necessary to have an explicit dependency over SMP for arm64 ? Cf.
commit 4b3dc9679cf7 ("arm64: force CONFIG_SMP=y and remove redundant #ifdefs")
Regards,
Pierre
On 8/6/24 10:53, Yicong Yang wrote:
From: Yicong Yang
Enable HOTPLUG_SMT for SMT control.
Signed-off-by: Yic
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