From: Pingfan Liu <[email protected]>
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/[email protected]/ --- 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 <[email protected]> Cc: Nicholas Piggin <[email protected]> Cc: Christophe Leroy <[email protected]> Cc: Mahesh Salgaonkar <[email protected]> Cc: Wen Xiong <[email protected]> Cc: Baoquan He <[email protected]> Cc: Ming Lei <[email protected]> Cc: Sourabh Jain <[email protected]> Cc: Hari Bathini <[email protected]> Cc: [email protected] To: [email protected] 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 _______________________________________________ kexec mailing list [email protected] http://lists.infradead.org/mailman/listinfo/kexec
