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  1. 11 Jan, 2007 7 commits
    • Vivek Goyal's avatar
      [PATCH] x86-64: modpost add more symbols to whitelist pattern2 · 118c0ace
      Vivek Goyal authored 
      o MODPOST generates warning for i386 if compiled with CONFIG_RELOCATABLE=y
  and serial console support is enabled.

o Serial console setup function, serial8250_console_setup(), is a non __init
  function and it calls functions which are of type __init().
  (uart_parse_options() and uart_set_options()). Assuming, setup will
  be called during init time, changing serial8250_console_setup() to __init.

o Adding one more pattern to modpost whitelist. Console drivers might
  have *_console structures containing references to setup functions which
  can be of __init type. Don't generate warnings for those.

WARNING: vmlinux - Section mismatch: reference to .init.text: from .data between 'serial8250_console' (at offset 0xc05a33d8) and 'serial8250_reg'
Signed-off-by: default avatarVivek Goyal <vgoyal@in.ibm.com>
Signed-off-by: default avatarAndi Kleen <ak@suse.de>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Andi Kleen <ak@suse.de>
Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
      118c0ace
    • Vivek Goyal's avatar
      [PATCH] i386: make apic probe function non-init · e96763d6
      Vivek Goyal authored 
      o struct genapic contains pointer to probe() function which is of type
  __init. Hence MODPOST generates warning if kernel is compiled with
  CONFIG_RELOCATABLE=y for i386.

WARNING: vmlinux - Section mismatch: reference to .init.text: from .data between 'apic_summit' (at offset 0xc058b504) and 'apic_bigsmp'
WARNING: vmlinux - Section mismatch: reference to .init.text: from .data between 'apic_bigsmp' (at offset 0xc058b5a4) and 'cpu.4471'
WARNING: vmlinux - Section mismatch: reference to .init.text: from .data between 'apic_es7000' (at offset 0xc058b644) and 'apic_default'
WARNING: vmlinux - Section mismatch: reference to .init.text: from .data between 'apic_default' (at offset 0xc058b6e4) and 'interrupt'

o One of the possible options is to put special case check in MODPOST to
  not emit warnings for this case but I think it is not a very good option
  in terms of maintenance.

o Another option is to make probe() function non __init. Anyway this function
  is really small so not freeing this memory after init is not a big deal.
  Secondly, from a programming perspective, probably genapic should not
  provide pointers to functions which have been freed as genapic is non
  __init and is used even after initialization is complete.
Signed-off-by: default avatarVivek Goyal <vgoyal@in.ibm.com>
Signed-off-by: default avatarAndi Kleen <ak@suse.de>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Andi Kleen <ak@suse.de>
Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
      e96763d6
    • Vivek Goyal's avatar
      [PATCH] i386: cpu hotplug/smpboot misc MODPOST warning fixes · 4a5d107a
      Vivek Goyal authored 
      o Misc smpboot/cpu hotplug path cleanups. I did those to supress the
  warnings generated by MODPOST. These warnings are visible only
  if CONFIG_RELOCATABLE=y.

o CONFIG_RELOCATABLE compiles the kernel with --emit-relocs option. This
  option retains relocation information in vmlinux file and MODPOST
  is quick to spit out "Section mismatch" warnings.

o This patch fixes some of those warnings. Many of the functions in
  smpboot case are __devinit type and they in turn accesses text/data which
  if of type __cpuinit. Now if CONFIG_HOTPLUG=y and CONFIG_HOTPLUG_CPU=n
  then we end up in cases where a function in .text segment is calling
  another function in .init.text segment and MODPOST emits warning.

WARNING: vmlinux - Section mismatch: reference to .init.text:identify_cpu from .text between 'smp_store_cpu_info' (at offset 0xc011020d) and 'do_boot_cpu'
WARNING: vmlinux - Section mismatch: reference to .init.text:init_gdt from .text between 'do_boot_cpu' (at offset 0xc01102ca) and '__cpu_up'
WARNING: vmlinux - Section mismatch: reference to .init.text:print_cpu_info from .text between 'do_boot_cpu' (at offset 0xc01105d0) and '__cpu_up'

o It also fixes the issues where CONFIG_HOTPLUG_CPU=y and start_secondary()
  is calling smp_callin() which in-turn calls synchronize_tsc_ap() which is
  of type __init. This should have meant broken CPU hotplug.

WARNING: vmlinux - Section mismatch: reference to .init.data: from .text between 'start_secondary' (at offset 0xc011603f) and 'initialize_secondary'
WARNING: vmlinux - Section mismatch: reference to .init.data: from .text between 'MP_processor_info' (at offset 0xc0116a4f) and 'mp_register_lapic'
WARNING: vmlinux - Section mismatch: reference to .init.data: from .text between 'MP_processor_info' (at offset 0xc0116a4f) and 'mp_register_lapic'
Signed-off-by: default avatarVivek Goyal <vgoyal@in.ibm.com>
Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarAndi Kleen <ak@suse.de>
      4a5d107a
    • Andi Kleen's avatar
      [PATCH] x86-64: Use different constraint for gcc < 4.1 in bitops.h · 24420760
      Andi Kleen authored 
      +m is really correct for a RMW instruction, but some older gccs
error out. I finally gave in and ifdefed it.

This fixes compilation errors with some compiler version.
Signed-off-by: default avatarAndi Kleen <ak@suse.de>
      24420760
    • Vivek Goyal's avatar
      [PATCH] x86-64: Make noirqdebug_setup function non init to fix modpost warning · 343cde51
      Vivek Goyal authored 
      o noirqdebug_setup() is __init but it is being called by
  quirk_intel_irqbalance() which if of type __devinit. If CONFIG_HOTPLUG=y,
  quirk_intel_irqbalance() is put into text section and it is wrong to
  call a function in __init section.

o MODPOST flags this on i386 if CONFIG_RELOCATABLE=y

WARNING: vmlinux - Section mismatch: reference to .init.text:noirqdebug_setup from .text between 'quirk_intel_irqbalance' (at offset 0xc010969e) and 'i8237A_suspend'

o Make noirqdebug_setup() non-init.
Signed-off-by: default avatarVivek Goyal <vgoyal@in.ibm.com>
Signed-off-by: default avatarAndi Kleen <ak@suse.de>
      343cde51
    • Andi Kleen's avatar
      [PATCH] i386: Update defconfig · 7c8809ae
      Andi Kleen authored 
      Signed-off-by: default avatarAndi Kleen <ak@suse.de>
      7c8809ae
    • Andi Kleen's avatar
      [PATCH] x86-64: Update defconfig · 03c3cc61
      Andi Kleen authored 
      Signed-off-by: default avatarAndi Kleen <ak@suse.de>
      03c3cc61
  3. 10 Jan, 2007 4 commits
  5. 09 Jan, 2007 29 commits