From: Pingfan Liu <kernelf...@gmail.com>
Since my last v4 [1], the code has undergone great changes. The paca[] array has been reorganized and indexed by paca_ptrs[], which dramatically decreases the memory consumption even if there are many unpresent cpus in the middle. However, reordering the logical cpu numbers can further decrease the size of paca_ptrs[] in the kdump case. These two patches rotate-shifts the cpu's sequence number in the device tree to obtain the logical cpu id. [1]: https://lore.kernel.org/linuxppc-dev/1520829790-14029-1-git-send-email-kernelf...@gmail.com/ --- v8 -> v9 put aside [3-5/5] in v8 for the time being, which complicates the code. optimize out some unnecessary initialization according to Hari's suggestion Cc: Michael Ellerman <m...@ellerman.id.au> Cc: Nicholas Piggin <npig...@gmail.com> Cc: Christophe Leroy <christophe.le...@csgroup.eu> Cc: Mahesh Salgaonkar <mah...@linux.ibm.com> Cc: Wen Xiong <wenxi...@us.ibm.com> Cc: Baoquan He <b...@redhat.com> Cc: Ming Lei <ming....@redhat.com> Cc: Sourabh Jain <sourabhj...@linux.ibm.com> Cc: Hari Bathini <hbath...@linux.ibm.com> Cc: ke...@lists.infradead.org To: linuxppc-dev@lists.ozlabs.org Pingfan Liu (2): powerpc/setup : Enable boot_cpu_hwid for PPC32 powerpc/setup: Loosen the mapping between cpu logical id and its seq in dt arch/powerpc/include/asm/smp.h | 2 +- arch/powerpc/kernel/prom.c | 26 +++++---- arch/powerpc/kernel/setup-common.c | 86 +++++++++++++++++++++++------- 3 files changed, 83 insertions(+), 31 deletions(-) -- 2.31.1
