diff options
| author | Thomas Gleixner <tglx@linutronix.de> | 2024-02-13 22:05:53 +0100 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2024-02-15 22:07:43 +0100 |
| commit | 7c0edad3643f4493c4dafa6f5dfcfb1a86432156 (patch) | |
| tree | b6e88ee7e910a8933a16cd10e850c04e973e7743 /arch/x86/include/asm/topology.h | |
| parent | 0e53e7b656cf5aa67c08eca381cec858478195a7 (diff) | |
x86/cpu/topology: Rework possible CPU management
Managing possible CPUs is an unreadable and uncomprehensible maze. Aside of
that it's backwards because it applies command line limits after
registering all APICs.
Rewrite it so that it:
- Applies the command line limits upfront so that only the allowed amount
of APIC IDs can be registered.
- Applies eventual late restrictions in an understandable way
- Uses simple min_t() calculations which are trivial to follow.
- Provides a separate function for resetting to UP mode late in the
bringup process.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Michael Kelley <mhklinux@outlook.com>
Tested-by: Sohil Mehta <sohil.mehta@intel.com>
Link: https://lore.kernel.org/r/20240213210252.290098853@linutronix.de
Diffstat (limited to 'arch/x86/include/asm/topology.h')
| -rw-r--r-- | arch/x86/include/asm/topology.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/x86/include/asm/topology.h b/arch/x86/include/asm/topology.h index cb6bafd329f1..3e11a5a3b830 100644 --- a/arch/x86/include/asm/topology.h +++ b/arch/x86/include/asm/topology.h @@ -191,6 +191,7 @@ static inline bool topology_is_primary_thread(unsigned int cpu) { return cpumask_test_cpu(cpu, cpu_primary_thread_mask); } + #else /* CONFIG_SMP */ #define topology_max_packages() (1) static inline int |