> On Oct 13, 2015, at 17:40, Arnd Bergmann <a...@arndb.de> wrote: > > On Tuesday 13 October 2015 15:33:10 yalin wang wrote: >> >>> On Oct 13, 2015, at 04:04, Sam Ravnborg <s...@ravnborg.org> wrote: >>> >>>> --- a/include/asm-generic/vmlinux.lds.h >>>> +++ b/include/asm-generic/vmlinux.lds.h >>>> >>>> -#define BSS_SECTION(sbss_align, bss_align, stop_align) >>>> \ >>>> +#define BSS_SECTION(sbss_align, bss_align, initbss_align, stop_align) >>>> \ >>> >>> A few comments: >>> >>> 1) - please align the backslash at the end of the >>> line with the backslash above it. >>> 2) - you need to fix all the remaining users of BSS_SECTION. >>> 3) - do we really need the flexibility to specify an alignment (stop_align)? >>> If not - drop the extra argument. >>> >>> Sam >> i change lots of __initdata to __initbss to test it on ARM arch, >> > > Ok, I found my mistake in the script I used to calculate the savings, > here is the correct output showing all uninitialized variables in > multi_v7_defconfig: > > 4 done.44688 > 1024 boot_command_line > 1024 tmp_cmdline.44689 > 4 late_time_init > 4 root_mount_data > 4 root_fs_names > 4 rd_doload > 4 root_delay > 64 saved_root_name > 4 root_device_name > 4 message > 4 byte_count > 4 victim > 4 collected > 8 this_header > 4 state > 4 collect > 4 remains > 4 next_state > 8 header_buf > 8 next_header > 4 do_retain_initrd > 4 name_len > 4 body_len > 4 gid > 4 uid > 4 mtime > 4 wfd > 4 vcollected > 4 ino > 4 mode > 4 nlink > 4 major > 4 minor > 4 rdev > 4 symlink_buf > 4 name_buf > 64 msg_buf.29770 > 128 head > 4 machine_desc > 4 usermem.34390 > 4 __atags_pointer > 1024 cmd_line > 1024 default_command_line > 1536 atags_copy > 4 dma_mmu_remap_num > 64 dma_mmu_remap > 4 phys_initrd_start > 4024 phys_initrd_size > 4096 bm_pte > 4 ecc_mask > 4 initial_pmd_value > 4 arm_lowmem_limit > 24 s5p_mfc_mem > 28 tx_pad_name > 4 use_gptimer_clksrc > 4 omap_table_init > 4 mpurate > 4 am35xx_aes_hwmod_ocp_ifs > 4 am35xx_sham_hwmod_ocp_ifs > 4 dra72x_hwmod_ocp_ifs > 4 rx51_vibra_data > 4 num_special_pds > 128 special_pds > 4 main_extable_sort_needed > 4 new_log_buf_len > 24 opts.36513 > 512 smap.22469 > 512 dmap.22470 > 64 group_map.22521 > 64 group_cnt.22522 > 4 pcpu_chosen_fc > 4 vmlist > 4 vm_init_off.26867 > 4 reset_managed_pages_done > 116 boot_kmem_cache_node.32827 > 116 boot_kmem_cache.32826 > 4 dhash_entries > 4 ihash_entries > 4 mhash_entries > 4 mphash_entries > 256 nfs_root_parms > 1028 nfs_export_path > 1028 nfs_root_device > 4 gic_cnt > 4 threshold_index > 4096 ata_force_param_buf > 4 mtd_devs > 2432 mtd_dev_param > 8 m68k_probes > 8 isa_probes > 4 arch_timers_present > 4 dt_root_size_cells > 4 dt_root_addr_cells > 4 imx_keep_uart_clocks > 4 imx_uart_clocks > 4 mt8173_top_clk_data > 4 mt8173_pll_clk_data > 4 cpg_mode > 4 cpg_mode_rates > 4 cpg_mode_divs > 4 cpg_mode > 4 cpg_mode > 4 thash_entries > 4 uhash_entries > 4 ic_got_reply > 4 ic_first_dev > 4 ic_dev > 16 user_dev_name > 4 ic_dhcp_msgtype > 4 ic_host_name_set > 4 ic_dev_mtu > 4 ic_set_manually > 4 ic_enable > 256 vendor_class_identifier > 4 ic_proto_have_if > 4 dma_reserve > 4 nr_kernel_pages > 4 nr_all_pages > 196 __clk_of_table_sentinel > 200 __rmem_of_table_sentinel > 196 __clksrc_of_table_sentinel > 200 __iommu_of_table_sentinel > 8 __cpu_method_of_table_sentinel > 8 __cpuidle_method_of_table_sentinel > 196 irqchip_of_match_end > 32 __earlycon_table_sentinel > 200 __earlycon_of_table_sentinel > 6 __irf_end > > > 26398 total i am curious about your scripts , could you show me ? Thank you !
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