Messages in this thread | | | From | Prarit Bhargava <> | Subject | [PATCH 0/3 v2 RESEND] x86/smpboot: Cleanup logical package ID | Date | Tue, 26 Sep 2017 08:53:23 -0400 |
| |
Sending to wider audience. I originally sent this to only the people Andi had cc'd.
Andi posted two patches to clean up the logical package ID, and I posted a bug fix for systems which boot with less than than the maximum core count. If I take his changes into account the code base ends up with a significant cleanup. I am reposting his patches here.
I boot tested this using max_cpus and nr_cpus, as well as booting on systems which panic without the fix in 3/3.
---8<---
Cleanup the logical package ID code by storing the logical package ID in the cpuinfo_x86 struct and calculating the maximum logical package ID after all the CPUs have been enumerated.
Signed-off-by: Prarit Bhargava <prarit@redhat.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@redhat.com> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: x86@kernel.org Cc: Peter Zijlstra <peterz@infradead.org> Cc: Andi Kleen <ak@linux.intel.com> Cc: Dave Hansen <dave.hansen@intel.com> Cc: Piotr Luc <piotr.luc@intel.com> Cc: Kan Liang <kan.liang@intel.com> Cc: Borislav Petkov <bp@suse.de> Cc: Stephane Eranian <eranian@google.com> Cc: Prarit Bhargava <prarit@redhat.com> Cc: Arvind Yadav <arvind.yadav.cs@gmail.com> Cc: Andy Lutomirski <luto@kernel.org> Cc: Christian Borntraeger <borntraeger@de.ibm.com> Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com> Cc: Tom Lendacky <thomas.lendacky@amd.com> Cc: He Chen <he.chen@linux.intel.com> Cc: Mathias Krause <minipli@googlemail.com> Cc: Tim Chen <tim.c.chen@linux.intel.com> Cc: Vitaly Kuznetsov <vkuznets@redhat.com>
Andi Kleen (2): perf/x86/intel/uncore: Cache logical pkg id in uncore driver x86/topology: Avoid wasting 128k for package id array
Prarit Bhargava (1): x86/smpboot: Fix __max_logical_packages estimate
arch/x86/events/intel/uncore.c | 1 + arch/x86/events/intel/uncore.h | 1 + arch/x86/events/intel/uncore_snbep.c | 2 +- arch/x86/include/asm/processor.h | 6 +- arch/x86/kernel/smpboot.c | 113 +++++++++++------------------------ 5 files changed, 42 insertions(+), 81 deletions(-)
-- 1.8.5.5
| |