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path: root/scripts/mod/modpost.c
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2007-07-31kbuild: whitelist references from __dbe_table to .initRalf Baechle
This is needed on MIPS where the same mechanism as get_user() is used to intercept bus error exceptions for some hardware probes. Without this patch modpost will throw spurious warnings: LD vmlinux SYSMAP System.map SYSMAP .tmp_System.map MODPOST vmlinux WARNING: arch/mips/sgi-ip22/built-in.o(__dbe_table+0x0): Section mismatch: reference to .init.text: Signed-off-by: Ralf Baechle <ralf@linux-mips.org> Cc: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-25kbuild: fix modpost warnings for xtensaSam Ravnborg
The Xtensa architecture places literal pools in sections separate from the instructions. The corresponsing text sections, therefore, reference the .literal section, and we have to suppress those warnings. The naming convention defines the name for a literal section as .SECTION.literal, unless .SECTION is .text. In that case the name is only .literal. Using strncmp() instead of strcmp() to compare the from-section with .SECTION.init.refok in pattern 0 should not cause any regressions for other architectures. We also need to suppress warnings for two informational sections (.xt.lit and .xt.prop) used by the Xtensa architecture. Signed-off-by: Chris Zankel <chris@zankel.net> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2007-07-25kbuild: be more foregiving on init section namingSam Ravnborg
In the whitelist function of modpost now use the same check to identify init_section as in other places of modpost. This has the effect that we now recognize sections named .init.text.19 as init sections and we no longer warn when we see these. At the same time make surrounding code readable by dropping use of temporary flags. Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2007-07-25kbuild: rearrange a few function in modpostSam Ravnborg
This is a preparational patch that just move two functions and add one (for now unused) function. Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2007-07-25kbuild: do not do section mismatch checks on vmlinux in 2nd passSam Ravnborg
We already check and warn about section mismatches from vmlinux (build as vmlinux.o) during first pass so skip the checks during the 2nd pass where we process modules. Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2007-07-20m68k: teach modpost about .m68_fixupAl Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-17Whitelist references from __dbe_table to .initRalf Baechle
This is needed on MIPS where the same mechanism as get_user() is used to intercept bus error exceptions for some hardware probes. Without this patch modpost will throw spurious warnings: LD vmlinux SYSMAP System.map SYSMAP .tmp_System.map MODPOST vmlinux WARNING: arch/mips/sgi-ip22/built-in.o(__dbe_table+0x0): Section mismatch: reference to .init.text: Signed-off-by: Ralf Baechle <ralf@linux-mips.org> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2007-07-17modpost white list pattern adjustmentJan Beulich
gcc puts data into .data.rel or .data.rel.* on some architectures (e.g. ia64) or under certain conditions, so whatever is legal relative to .data should also be legal for those other sections. Fixes a few modpost warnings on ia64. Signed-off-by: Jan Beulich <jbeulich@novell.com> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2007-07-17kbuild: do section mismatch check on full vmlinuxSam Ravnborg
Previously we did do the check on the .o files used to link vmlinux but that failed to find questionable references across the .o files. Create a dedicated vmlinux.o file used only for section mismatch checks that uses the defualt linker script so section does not get renamed. The vmlinux.o may later be used as part of the the final link of vmlinux but for now it is used fo section mismatch only. For a defconfig build this is instant but for an allyesconfig this add two minutes to a full build (that anyways takes ~2 hours). Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2007-07-16kbuild: whitelist references from variables named _timer to .init.textSam Ravnborg
arm uses a lot of ops structures named *_timer that has legitimite references to .init.text. So let's add this variable to the list of variables that may reference .init.text without causing any warning. Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2007-07-16kbuild: remove hardcoded _logo names from modpostSam Ravnborg
Replaced this with a __init_refok marker in front of fb_find_logo(). I think that the __initdata marker for the logo's are wrong but I have not justified this so I did not remove it. Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2007-07-16kbuild: remove hardcoded apic_es7000 from modpostSam Ravnborg
Replace the hardcoded variable name apic_es7000 in modpost with a __initdata_refok marker. Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2007-07-16kbuild: warn about references from .init.text to .exit.textSam Ravnborg
The .exit.text section may be discarded either at build or at runtime. So let modpost warn if this situation is detected. Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2007-07-16kbuild: consolidate section checksSam Ravnborg
Move more checks from whitelist to the section check functions. Remove the redundent pci_fixup check. Renumber the patterns. No functional changes. Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2007-07-16kbuild: refactor code in modpost to improve maintainabilitySam Ravnborg
There were a great deal of overlap between the two functions that check which sections may reference .init.text and .exit.text. Factor out common check to a separate function and sort entries in the original functions. Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2007-07-16kbuild: ignore section mismatch warnings originating from .note sectionSam Ravnborg
.note* sections are ELF notes, which are typically used by external tools to examine the kernel image. Since this is removed from any runtime consideration, it's OK to reference any section from a .note* section. Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2007-07-16kbuild: .paravirtprobe section is obsolete, so modpost doesn't need to handle itJeremy Fitzhardinge
The .paravirtprobe section is obsolete, so modpost doesn't need to handle it. Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com> Cc: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2007-07-16kbuild: suppress modpost warnings for references from the .toc section as ↵Stephen Rothwell
used by powerpc We should do better here by effetively "dereferencing" references to the .toc (or the .got2) section, but that is much harder. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2007-07-16kbuild: make better section mismatch reports on armSam Ravnborg
With this change we can find more symbols hereby improving the readability of the warnings. Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2007-07-16kbuild: make better section mismatch reports on i386 and mipsAtsushi Nemoto
On i386 and MIPS, warn_sec_mismatch() sometimes fails to show usefull symbol name. This is because empty 'refsym' due to 0 r_addend value. This patch is to adjust r_addend value, consulting with apply_relocate() routine in kernel code. Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2007-06-11kbuild: fix sh64 section mismatch problemsSam Ravnborg
There's a special .cranges section that is almost always generated, with data being moved to the appropriate section by the linker at a later stage. To give a bit of background, sh64 has both a native SHmedia instruction set (32-bit instructions) and SHcompact (which is compatability with normal SH -- 16-bit, a massively reduced register set, etc.). code ranges are emitted when we're using the 32-bit ABI, but not the 64-bit one. It is a special staging section used solely by binutils where code with different flags get placed (more specifically differing flags for input and output sections), before being lazily merged by the linker. The closest I've been able to find to documentation is: http://sources.redhat.com/cgi-bin/cvsweb.cgi/src/ld/emultempl/sh64elf.em?rev=1.10&content-type=text/x-cvsweb-markup&cvsroot=src It's an array of 8-byte Elf32_CRange structure given in http://sources.redhat.com/cgi-bin/cvsweb.cgi/src/bfd/elf32-sh64.h?rev=1.4&content-type=text/x-cvsweb-markup&cvsroot=src that describes for which ISA a range is used. Silence the warnings by allowing references from .init.text to .cranges. The following warnings are fixed: WARNING: init/built-in.o(.cranges+0x0): Section mismatch: reference to .init.text: WARNING: init/built-in.o(.cranges+0xa): Section mismatch: reference to .init.text: WARNING: init/built-in.o(.cranges+0x14): Section mismatch: reference to .init.text: WARNING: init/built-in.o(.cranges+0x1e): Section mismatch: reference to .init.text: WARNING: init/built-in.o(.cranges+0x28): Section mismatch: reference to .init.text: WARNING: init/built-in.o(.cranges+0x32): Section mismatch: reference to .init.text: WARNING: kernel/built-in.o(.cranges+0x50): Section mismatch: reference to .init.text: WARNING: kernel/built-in.o(.cranges+0x5a): Section mismatch: reference to .init.text: WARNING: kernel/built-in.o(.cranges+0x64): Section mismatch: reference to .init.text: WARNING: kernel/built-in.o(.cranges+0xfa): Section mismatch: reference to .init.text: WARNING: kernel/built-in.o(.cranges+0x104): Section mismatch: reference to .init.text: WARNING: kernel/built-in.o(.cranges+0x10e): Section mismatch: reference to .init.text: WARNING: kernel/built-in.o(.cranges+0x14a): Section mismatch: reference to .init.text: WARNING: kernel/built-in.o(.cranges+0x154): Section mismatch: reference to .init.text: WARNING: kernel/built-in.o(.cranges+0x15e): Section mismatch: reference to .init.text: WARNING: mm/built-in.o(.cranges+0x6e): Section mismatch: reference to .init.text: WARNING: mm/built-in.o(.cranges+0x78): Section mismatch: reference to .init.text: WARNING: mm/built-in.o(.cranges+0x82): Section mismatch: reference to .init.text: WARNING: mm/built-in.o(.cranges+0xaa): Section mismatch: reference to .init.text: WARNING: fs/built-in.o(.cranges+0x136): Section mismatch: reference to .init.text: WARNING: fs/built-in.o(.cranges+0x140): Section mismatch: reference to .init.text: WARNING: fs/built-in.o(.cranges+0x14a): Section mismatch: reference to .init.text: WARNING: fs/built-in.o(.cranges+0x168): Section mismatch: reference to .init.text: WARNING: fs/built-in.o(.cranges+0x1f4): Section mismatch: reference to .init.text: WARNING: fs/built-in.o(.cranges+0x1fe): Section mismatch: reference to .init.text: WARNING: net/built-in.o(.cranges+0x302): Section mismatch: reference to .init.text: WARNING: net/built-in.o(.cranges+0x30c): Section mismatch: reference to .init.text: WARNING: net/built-in.o(.cranges+0x316): Section mismatch: reference to .init.text: WARNING: net/built-in.o(.cranges+0x3a2): Section mismatch: reference to .init.text: WARNING: net/built-in.o(.cranges+0x3ac): Section mismatch: reference to .init.text: WARNING: net/built-in.o(.cranges+0x4ce): Section mismatch: reference to .init.text: WARNING: net/built-in.o(.cranges+0x4d8): Section mismatch: reference to .init.text: Signed-off-by: Paul Mundt <lethal@linux-sh.org> Cc: Kaz Kojima <kkojima@rr.iij4u.or.jp> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2007-05-21Revert "kbuild: make better section mismatch reports on i386, arm and mips"Linus Torvalds
This reverts commit f892b7d480eec809a5dfbd6e65742b3f3155e50e, which totally broke the build on x86 with CONFIG_RELOCATABLE (which, as far as I can tell, is the only case where it should even matter!) due to a SIGSEGV in modpost. Cc: Sam Ravnborg <sam@ravnborg.org> Cc: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-19mm: fix section mismatch warningsSam Ravnborg
modpost had two cases hardcoded for mm/ Shift over to __init_refok and kill the hardcoded function names in modpost. This has the drawback that the functions will always be kept no matter configuration. With previous code the function were placed in init section if configuration allowed it. Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2007-05-19init/main: use __init_refok to fix section mismatchSam Ravnborg
Kill a special case in modpost by introducing the __init_refok marker. Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2007-05-19kbuild: introduce __init_refok/__initdata_refok to supress section mismatch ↵Sam Ravnborg
warnings Throughout the kernel there are a few legitimite references to init or exit sections. Most of these are covered by the patterns included in modpost but a few nees special attention. To avoid hardcoding a lot of function names in modpost introduce a marker so relevant function/data can be marked. When modpost see a reference to a init/exit function from a function/data marked no warning will be issued. Idea from: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Cc: Andrew Morton <akpm@linux-foundation.org>
2007-05-19kbuild: add "Section mismatch" warning whitelist for powerpcLi Yang
This patch fixes the following class of "Section mismatch" warnings when building powerpc platforms. WARNING: arch/powerpc/kernel/built-in.o - Section mismatch: reference to .init.data:.got2 from prom_entry (offset 0x0) WARNING: arch/powerpc/platforms/built-in.o - Section mismatch: reference to .init.text:mpc8313_rdb_probe from .machine.desc after 'mach_mpc8313_rdb' (at offset 0x4) .... Signed-off-by: Li Yang <leoli@freescale.com> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2007-05-19kbuild: make better section mismatch reports on i386, arm and mipsAtsushi Nemoto
On i386, ARM and MIPS, warn_sec_mismatch() sometimes fails to show usefull symbol name. This is because empty 'refsym' due to 0 r_addend value. This patch is to adjust r_addend value, consulting with apply_relocate() routine in kernel code. Without this patch: MODPOST vmlinux WARNING: init/built-in.o - Section mismatch: reference to .init.text: from .text between 'rest_init' (at offset 0xf4) and 'try_name' WARNING: mm/built-in.o - Section mismatch: reference to .init.text: from .text between 'kmem_cache_create' (at offset 0x18a39) and 'cache_reap' WARNING: mm/built-in.o - Section mismatch: reference to .init.text: from .text between 'kmem_cache_create' (at offset 0x18a6b) and 'cache_reap' With this patch: MODPOST vmlinux WARNING: mm/built-in.o - Section mismatch: reference to .init.text:set_up_list3s from .text between 'kmem_cache_create' (at offset 0x18a39) and 'cache_reap' WARNING: mm/built-in.o - Section mismatch: reference to .init.text:set_up_list3s from .text between 'kmem_cache_create' (at offset 0x18a6b) and 'cache_reap' Now modpost can detect "kernel_init" name (and whitelist it) and show "set_up_list3s" name. Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2007-05-19kbuild: make modpost section warnings clearerRussell King
Change modpost section mismatch warnings to be less confusing; model them on the binutils linker warnings which we all know how to interpret. Also, fix the wrong ordering of arguments for the final case - fromsec and refsymname were reversed. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Acked-by: Acked-by: David S. Miller <davem@davemloft.net> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2007-05-09Allow arch to initialize arch field of the module structureRoman Zippel
This will later allow an arch to add module specific information via linker generated tables instead of poking directly in the module object structure. Signed-off-by: Roman Zippel <zippel@linux-m68k.org> Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-08Add white list into modpost.c for memory hotplug code and ia64's machvec sectionYasunori Goto
This patch is add white list into modpost.c for some functions and ia64's section to fix section mismatchs. sparse_index_alloc() and zone_wait_table_init() calls bootmem allocator at boot time, and kmalloc/vmalloc at hotplug time. If config memory hotplug is on, there are references of bootmem allocater(init text) from them (normal text). This is cause of section mismatch. Bootmem is called by many functions and it must be used only at boot time. I think __init of them should keep for section mismatch check. So, I would like to register sparse_index_alloc() and zone_wait_table_init() into white list. In addition, ia64's .machvec section is function table of some platform dependent code. It is mixture of .init.text and normal text. These reference of __init functions are valid too. Signed-off-by: Yasunori Goto <y-goto@jp.fujitsu.com> Cc: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-06Merge git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuildLinus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild: (38 commits) kconfig: fix mconf segmentation fault kbuild: enable use of code from a different dir kconfig: error out if recursive dependencies are found kbuild: scripts/basic/fixdep segfault on pathological string-o-death kconfig: correct minor typo in Kconfig warning message. kconfig: fix path to modules.txt in Kconfig help usr/Kconfig: fix typo kernel-doc: alphabetically-sorted entries in index.html of 'htmldocs' kbuild: be more explicit on missing .config file kbuild: clarify the creation of the LOCALVERSION_AUTO string. kbuild: propagate errors from find in scripts/gen_initramfs_list.sh kconfig: refer to qt3 if we cannot find qt libraries kbuild: handle compressed cpio initramfs-es kbuild: ignore section mismatch warning for references from .paravirtprobe to .init.text kbuild: remove stale comment in modpost.c kbuild/mkuboot.sh: allow spaces in CROSS_COMPILE kbuild: fix make mrproper for Documentation/DocBook/man kbuild: remove kconfig binaries during make mrproper kconfig/menuconfig: do not hardcode '.config' kbuild: override build timestamp & version ...
2007-05-02kbuild: ignore section mismatch warning for references from .paravirtprobe ↵Sam Ravnborg
to .init.text Added on request from: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Cc: Rusty Russell <rusty@rustcorp.com.au>
2007-05-02kbuild: remove stale comment in modpost.cSam Ravnborg
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2007-05-02kbuild: distinguish between errors and warnings in modpostMatthew Wilcox
Some of modpost's warnings are fatal, and some are not. Adopt the compiler distinction between errors and warnings by calling merror() for fatal diagnostics and warn() for non-fatal ones. merror() was used as replacemtn for error() to avoid clash with glibc Signed-off-by: Matthew Wilcox <matthew@wil.cx> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2007-05-02kbuild: whitelist logo references from .text to .init.dataSam Ravnborg
drivers/video/logo has references from .text to .init.data but function is only used during early init. So reference is OK and we do not want to warn about them => whitelist the reference. Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2007-05-02kbuild: fix segmentation fault in modpostSam Ravnborg
If modpost was called manually with filenames without '/' then modpost would segfault. Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2007-05-02kbuild: fix warnings from .pci_fixup sectionSam Ravnborg
Now where we do not pass vmlinux to modpost we started to see section mismatch warnings from .pci_fixup. Refactored code a little to include these in the whitelist again. Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2007-05-02kbuild: whitelist section mismatch in init/main.cSam Ravnborg
In init/main.c we have a reference from rest_init() to .init.text which is intentional. Rename the function 'init' to 'kernel_init' to make it a kernel wide unique symbol and whitelist the reference. Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2007-05-02kbuild: fix section mismatch check for vmlinuxSam Ravnborg
vmlinux does not contain relocation entries which is used by the section mismatch checks. Reported by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Use the individual objects as inputs to overcome this limitation. In modpost check the .o files and skip non-ELF files. Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2007-05-02[PATCH] i386: modpost apic related warning fixesVivek Goyal
o Modpost generates warnings for i386 if compiled with CONFIG_RELOCATABLE=y WARNING: vmlinux - Section mismatch: reference to .init.text:find_unisys_acpi_oem_table from .text between 'acpi_madt_oem_check' (at offset 0xc0101eda) and 'enable_apic_mode' WARNING: vmlinux - Section mismatch: reference to .init.text:acpi_get_table_header_early from .text between 'acpi_madt_oem_check' (at offset 0xc0101ef0) and 'enable_apic_mode' WARNING: vmlinux - Section mismatch: reference to .init.text:parse_unisys_oem from .text between 'acpi_madt_oem_check' (at offset 0xc0101f2e) and 'enable_apic_mode' WARNING: vmlinux - Section mismatch: reference to .init.text:setup_unisys from .text between 'acpi_madt_oem_check' (at offset 0xc0101f37) and 'enable_apic_mode'WARNING: vmlinux - Section mismatch: reference to .init.text:parse_unisys_oem from .text between 'mps_oem_check' (at offset 0xc0101ec7) and 'acpi_madt_oem_check' WARNING: vmlinux - Section mismatch: reference to .init.text:es7000_sw_apic from .text between 'enable_apic_mode' (at offset 0xc0101f48) and 'check_apicid_present' o Some functions which are inline (acpi_madt_oem_check) are not inlined by compiler as these functions are accessed using function pointer. These functions are put in .text section and they in-turn access __init type functions hence modpost generates warnings. o Do not iniline acpi_madt_oem_check, instead make it __init. Signed-off-by: Vivek Goyal <vgoyal@in.ibm.com> Signed-off-by: Andi Kleen <ak@suse.de> Cc: Andi Kleen <ak@suse.de> Cc: Len Brown <lenb@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2007-02-26Merge master.kernel.org:/pub/scm/linux/kernel/git/kyle/parisc-2.6Linus Torvalds
* master.kernel.org:/pub/scm/linux/kernel/git/kyle/parisc-2.6: (78 commits) [PARISC] Use symbolic last syscall in __NR_Linux_syscalls [PARISC] Add missing statfs64 and fstatfs64 syscalls Revert "[PARISC] Optimize TLB flush on SMP systems" [PARISC] Compat signal fixes for 64-bit parisc [PARISC] Reorder syscalls to match unistd.h Revert "[PATCH] make kernel/signal.c:kill_proc_info() static" [PARISC] fix sys_rt_sigqueueinfo [PARISC] fix section mismatch warnings in harmony sound driver [PARISC] do not export get_register/set_register [PARISC] add ENTRY()/ENDPROC() and simplify assembly of HP/UX emulation code [PARISC] convert to use CONFIG_64BIT instead of __LP64__ [PARISC] use CONFIG_64BIT instead of __LP64__ [PARISC] add ASM_EXCEPTIONTABLE_ENTRY() macro [PARISC] more ENTRY(), ENDPROC(), END() conversions [PARISC] fix ENTRY() and ENDPROC() for 64bit-parisc [PARISC] Fixes /proc/cpuinfo cache output on B160L [PARISC] implement standard ENTRY(), END() and ENDPROC() [PARISC] kill ENTRY_SYS_CPUS [PARISC] clean up debugging printks in smp.c [PARISC] factor syscall_restart code out of do_signal ... Fix conflict in include/linux/sched.h due to kill_proc_info() being made publicly available to PARISC again.
2007-02-20[PATCH] remove modpost false warnings on ARMDavid Brownell
This patch stops "modpost" from issuing erroneous modpost warnings on ARM builds, which it's been doing since since maybe last summer. A canonical example would be driver method table entries: WARNING: <path> - Section mismatch: reference to .exit.text:<name>_remove from .data after '$d' (at offset 0x4) That "$d" symbol is generated by tools conformant with ARM ABI specs; in this case it's a symbol **in the middle of** a "<name>_driver" struct. The erroneous warnings appear to be issued because "modpost" whitelists references from "<name>_driver" data into init and exit sections ... but doesn't know should also include those "$d" mapping symbols, which are not otherwise associated with "<name>_driver" symbols. This patch prevents the modpost symbol lookup code from ever returning those mapping symbols, so it will return a whitelisted symbol instead. Then things work as expected. Now to revert various code-bloating "fixes" that got merged because of this modpost bug.... Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Acked-by: Rusty Russell <rusty@rustcorp.com.au> Cc: Roman Zippel <zippel@linux-m68k.org> Acked-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-17Merge branch 'parisc' from /home/kyle/repos/parisc-2.6.gitKyle McMartin
Conflicts: arch/parisc/hpux/sys_hpux.c arch/parisc/mm/ioremap.c
2007-02-13[PATCH] i386: move startup_32() in text.head sectionVivek Goyal
o Entry startup_32 was in .text section but it was accessing some init data too and it prompts MODPOST to generate compilation warnings. WARNING: vmlinux - Section mismatch: reference to .init.data:boot_params from .text between '_text' (at offset 0xc0100029) and 'startup_32_smp' WARNING: vmlinux - Section mismatch: reference to .init.data:boot_params from .text between '_text' (at offset 0xc0100037) and 'startup_32_smp' WARNING: vmlinux - Section mismatch: reference to .init.data:init_pg_tables_end from .text between '_text' (at offset 0xc0100099) and 'startup_32_smp' o Can't move startup_32 to .init.text as this entry point has to be at the start of bzImage. Hence moved startup_32 to a new section .text.head and instructed MODPOST to not to generate warnings if init data is being accessed from .text.head section. This code has been audited. o SMP boot up code (startup_32_smp) can go into .init.text if CPU hotplug is not supported. Otherwise it generates more warnings WARNING: vmlinux - Section mismatch: reference to .init.data:new_cpu_data from .text between 'checkCPUtype' (at offset 0xc0100126) and 'is486' WARNING: vmlinux - Section mismatch: reference to .init.data:new_cpu_data from .text between 'checkCPUtype' (at offset 0xc0100130) and 'is486' Signed-off-by: Vivek Goyal <vgoyal@in.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Andi Kleen <ak@suse.de>
2007-02-08[PATCH] PA-RISC: Fix bogus warnings from modpostMatthew Wilcox
parisc and parisc64 seem to name sections a little differently from other targets. parisc64 gives spurious warnings like: WARNING: drivers/net/dummy.o - Section mismatch: reference to .init.text:dummy_setup from .data.rel.ro between '.LC1' (at offset 0x0) and '.LC6' and parisc gives spurious warnings like: WARNING: drivers/net/dummy.o - Section mismatch: reference to .init.text:dummy_setup from .rodata.cst4 between '.LC1' (at offset 0x0) and '.LC6' Given the other comments in modpost.c, it seems that the best solution is to move rodata down to the 'match at start of name' section and add .data.rel.ro to the 'match entire name' section. Cc: Sam Ravnborg <sam@ravnborg.org> Cc: Kyle McMartin <kyle@mcmartin.ca> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2007-01-11[PATCH] x86-64: Modpost whitelist reference to more symbols (pattern 3)Vivek Goyal
o MODPOST generates warning on i386 if kernel is compiled with CONFIG_RELOCATABLE=y. WARNING: vmlinux - Section mismatch: reference to .init.text:__init_begin from .text between 'free_initmem' (at offset 0xc0114fd3) and 'do_test_wp_bit' WARNING: vmlinux - Section mismatch: reference to .init.text:_sinittext from .text between 'core_kernel_text' (at offset 0xc012aeae) and 'kernel_text_address' WARNING: vmlinux - Section mismatch: reference to .init.text:_einittext from .text between 'core_kernel_text' (at offset 0xc012aeb7) and 'kernel_text_address' WARNING: vmlinux - Section mismatch: reference to .init.text:_sinittext from .text between 'get_symbol_pos' (at offset 0xc0135776) and 'reset_iter' WARNING: vmlinux - Section mismatch: reference to .init.text:_einittext from .text between 'get_symbol_pos' (at offset 0xc013577d) and 'reset_iter' o These symbols (__init_begin, _sinittext, _einittext) belong to init section and generally represent a section boundary. These are special symbols in the sense that their size is zero and no memory is allocated for them in init section. Their addr and value are same. So even if we free the init section, it is ok to reference them. o Whitelist access to such select symbols in MODPOST. Signed-off-by: Vivek Goyal <vgoyal@in.ibm.com> Signed-off-by: Andi Kleen <ak@suse.de> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Cc: Andi Kleen <ak@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org>
2007-01-11[PATCH] x86-64: modpost add more symbols to whitelist pattern2Vivek Goyal
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: Vivek Goyal <vgoyal@in.ibm.com> Signed-off-by: Andi Kleen <ak@suse.de> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Cc: Andi Kleen <ak@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org>
2006-12-13[PATCH] Fix section mismatch in parainstructionsRandy Dunlap
Section .parainstructions should not warn about section mismatches. WARNING: drivers/net/hamradio/scc.o - Section mismatch: reference to .exit.text: from .parainstructions after '' (at offset 0x0) WARNING: drivers/net/hamradio/scc.o - Section mismatch: reference to .exit.text: from .parainstructions after '' (at offset 0x8) Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Cc: Andi Kleen <ak@suse.de> Acked-by: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-07[PATCH] paravirt: Patch inline replacements for paravirt interceptsRusty Russell
It turns out that the most called ops, by several orders of magnitude, are the interrupt manipulation ops. These are obvious candidates for patching, so mark them up and create infrastructure for it. The method used is that the ops structure has a patch function, which is called for each place which needs to be patched: this returns a number of instructions (the rest are NOP-padded). Usually we can spare a register (%eax) for the binary patched code to use, but in a couple of critical places in entry.S we can't: we make the clobbers explicit at the call site, and manually clobber the allowed registers in debug mode as an extra check. And: Don't abuse CONFIG_DEBUG_KERNEL, add CONFIG_DEBUG_PARAVIRT. And: AK: Fix warnings in x86-64 alternative.c build And: AK: Fix compilation with defconfig And: ^From: Andrew Morton <akpm@osdl.org> Some binutlises still like to emit references to __stop_parainstructions and __start_parainstructions. And: AK: Fix warnings about unused variables when PARAVIRT is disabled. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com> Signed-off-by: Chris Wright <chrisw@sous-sol.org> Signed-off-by: Zachary Amsden <zach@vmware.com> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org>
2006-10-25[POWERPC] Support feature fixups in modulesBenjamin Herrenschmidt
This patch adds support for feature fixups in modules. This involves adding support for R_PPC64_REL64 relocs to the 64 bits module loader. It also modifies modpost.c to ignore the powerpc fixup sections (or it would warn when used in .init.text). Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Acked-by: Olof Johansson <olof@lixom.net> Signed-off-by: Paul Mackerras <paulus@samba.org>