- 22 8月, 2009 1 次提交
-
-
由 Jan Beulich 提交于
Some of the NOPs tables aren't used on 64-bits, quite some code and data is needed post-init for module loading only, and a couple of functions aren't used outside that file (i.e. can be static, and don't need to be exported). The change to __INITDATA/__INITRODATA is needed to avoid an assembler warning. Signed-off-by: NJan Beulich <jbeulich@novell.com> LKML-Reference: <4A8BC8A00200007800010823@vpn.id2.novell.com> Acked-by: NSam Ravnborg <sam@ravnborg.org> Signed-off-by: NH. Peter Anvin <hpa@zytor.com>
-
- 19 6月, 2009 1 次提交
-
-
由 Peter Oberparleiter 提交于
Call constructors (gcc-generated initcall-like functions) during kernel start and module load. Constructors are e.g. used for gcov data initialization. Disable constructor support for usermode Linux to prevent conflicts with host glibc. Signed-off-by: NPeter Oberparleiter <oberpar@linux.vnet.ibm.com> Acked-by: NRusty Russell <rusty@rustcorp.com.au> Acked-by: NWANG Cong <xiyou.wangcong@gmail.com> Cc: Sam Ravnborg <sam@ravnborg.org> Cc: Jeff Dike <jdike@addtoit.com> Cc: Andi Kleen <andi@firstfloor.org> Cc: Huang Ying <ying.huang@intel.com> Cc: Li Wei <W.Li@Sun.COM> Cc: Michael Ellerman <michaele@au1.ibm.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Heiko Carstens <heicars2@linux.vnet.ibm.com> Cc: Martin Schwidefsky <mschwid2@linux.vnet.ibm.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
-
- 17 6月, 2009 1 次提交
-
-
由 Geert Uytterhoeven 提交于
Now we have __initconst, we can finally move the external declarations for the various Linux logo structures to <linux/linux_logo.h>. James' ack dates back to the previous submission (way to long ago), when the logos were still __initdata, which caused failures on some platforms with some toolchain versions. Signed-off-by: NGeert Uytterhoeven <Geert.Uytterhoeven@sonycom.com> Acked-by: NJames Simmons <jsimmons@infradead.org> Cc: Krzysztof Helt <krzysztof.h1@poczta.fm> Cc: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
-
- 15 6月, 2009 1 次提交
-
-
由 Sam Ravnborg 提交于
Updated after review by Tim Abbott. - Use HEAD_TEXT_SECTION - Drop use of section-names.h and delete file - Introduce EXIT_CALL Deleting section-names.h required a few simple updates of init.h Signed-off-by: NSam Ravnborg <sam@ravnborg.org> Cc: Tim Abbott <tabbott@ksplice.com>
-
- 10 6月, 2009 1 次提交
-
-
由 Jan Beulich 提交于
- add .init.rodata to INIT_DATA, and group all initconst flavors together - move strings generated from __setup_param() into .init.rodata - add .*init.rodata to modpost's sets of init sections - make modpost warn about references between meminit and cpuinit as well as memexit and cpuexit sections (as CPU and memory hotplug are independently selectable features) Signed-off-by: NJan Beulich <jbeulich@novell.com> Signed-off-by: NSam Ravnborg <sam@ravnborg.org>
-
- 28 4月, 2009 1 次提交
-
-
由 Tim Abbott 提交于
The old refok sections .text.init.refok .data.init.refok .exit.text.refok have been deprecated since commit 312b1485. After the other patches in this patch series nothing is put in these sections, so clean things up by eliminating all the remaining references to them. Signed-off-by: NTim Abbott <tabbott@mit.edu> Acked-by: NSam Ravnborg <sam@ravnborg.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
-
- 27 4月, 2009 1 次提交
-
-
由 Tim Abbott 提交于
This patch is preparation for replacing all uses of ".head.text" or ".text.head" in the kernel with macros, so that the section name can later be changed without having to touch a lot of the kernel. Since some linker scripts do more complex things than referencing HEAD_TEXT, we add a HEAD_TEXT_SECTION macro that just contains the actual name. I've defined HEAD_TEXT_SECTION in a new header, include/linux/section-names.h, so that this section name only needs to appear in one place. I anticipate creating similar macro structures for a number of other section names. The long-term goal here is to be able to change the kernel's magic section names to those that are compatible with -ffunction-sections -fdata-sections. This requires renaming all magic sections with names of the form ".text.foo". Signed-off-by: NTim Abbott <tabbott@mit.edu> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
-
- 17 4月, 2009 1 次提交
-
-
由 Magnus Damm 提交于
V3 of the early platform driver implementation. Platform drivers are great for embedded platforms because we can separate driver configuration from the actual driver. So base addresses, interrupts and other configuration can be kept with the processor or board code, and the platform driver can be reused by many different platforms. For early devices we have nothing today. For instance, to configure early timers and early serial ports we cannot use platform devices. This because the setup order during boot. Timers are needed before the platform driver core code is available. The same goes for early printk support. Early in this case means before initcalls. These early drivers today have their configuration either hard coded or they receive it using some special configuration method. This is working quite well, but if we want to support both regular kernel modules and early devices then we need to have two ways of configuring the same driver. A single way would be better. The early platform driver patch is basically a set of functions that allow drivers to register themselves and architecture code to locate them and probe. Registration happens through early_param(). The time for the probe is decided by the architecture code. See Documentation/driver-model/platform.txt for more details. [akpm@linux-foundation.org: coding-style fixes] Signed-off-by: NMagnus Damm <damm@igel.co.jp> Cc: Paul Mundt <lethal@linux-sh.org> Cc: Kay Sievers <kay.sievers@vrfy.org> Cc: David Brownell <david-b@pacbell.net> Cc: Tejun Heo <htejun@gmail.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
-
- 30 10月, 2008 1 次提交
-
-
由 Jan Beulich 提交于
Add rodata equivalents for assembly use, and fix the section attributes used by __REFCONST. Signed-off-by: NJan Beulich <jbeulich@novell.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NSam Ravnborg <sam@ravnborg.org>
-
- 17 10月, 2008 1 次提交
-
-
由 Robert P. J. Day 提交于
This macro appears to have been unused for ages, and there are no invocations of it anywhere in the source tree. Signed-off-by: NRobert P. J. Day <rpjday@crashcourse.ca> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
-
- 16 10月, 2008 5 次提交
-
-
由 Ingo Molnar 提交于
Signed-off-by: NIngo Molnar <mingo@elte.hu>
-
由 Thomas Gleixner 提交于
Revert the dynarray changes. They need more thought and polishing. Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
-
由 Yinghai Lu 提交于
so could spare some memory with small alignment in bootmem also tighten the alignment checking, and make print out less debug info. Signed-off-by: NYinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: NIngo Molnar <mingo@elte.hu>
-
由 Yinghai Lu 提交于
allow dyn-array in per_cpu area, allocated dynamically. usage: | /* in .h */ | struct kernel_stat { | struct cpu_usage_stat cpustat; | unsigned int *irqs; | }; | | /* in .c */ | DEFINE_PER_CPU(struct kernel_stat, kstat); | | DEFINE_PER_CPU_DYN_ARRAY_ADDR(per_cpu__kstat_irqs, per_cpu__kstat.irqs, sizeof(unsigned int), nr_irqs, sizeof(unsigned long), NULL); after setup_percpu()/per_cpu_alloc_dyn_array(), the dyn_array in per_cpu area is ready to use. Signed-off-by: NYinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: NIngo Molnar <mingo@elte.hu>
-
由 Yinghai Lu 提交于
Allow crazy big arrays via bootmem at init stage. Architectures use CONFIG_HAVE_DYN_ARRAY to enable it. usage: | static struct irq_desc irq_desc_init __initdata = { | .status = IRQ_DISABLED, | .chip = &no_irq_chip, | .handle_irq = handle_bad_irq, | .depth = 1, | .lock = __SPIN_LOCK_UNLOCKED(irq_desc->lock), | #ifdef CONFIG_SMP | .affinity = CPU_MASK_ALL | #endif | }; | | static void __init init_work(void *data) | { | struct dyn_array *da = data; | struct irq_desc *desc; | int i; | | desc = *da->name; | | for (i = 0; i < *da->nr; i++) | memcpy(&desc[i], &irq_desc_init, sizeof(struct irq_desc)); | } | | struct irq_desc *irq_desc; | DEFINE_DYN_ARRAY(irq_desc, sizeof(struct irq_desc), nr_irqs, PAGE_SIZE, init_work); after pre_alloc_dyn_array() after setup_arch(), the array is ready to be used. Via this facility we can replace irq_desc[NR_IRQS] array with dyn_array irq_desc[nr_irqs]. v2: remove _nopanic in pre_alloc_dyn_array() Signed-off-by: NYinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: NIngo Molnar <mingo@elte.hu>
-
- 14 10月, 2008 1 次提交
-
-
由 Steven Rostedt 提交于
When a mcount pointer is recorded into a table, it is used to add or remove calls to mcount (replacing them with nops). If the code is removed via removing a module, the pointers still exist. At modifying the code a check is always made to make sure the code being replaced is the code expected. In-other-words, the code being replaced is compared to what it is expected to be before being replaced. There is a very small chance that the code being replaced just happens to look like code that calls mcount (very small since the call to mcount is relative). To remove this chance, this patch adds ftrace_release to allow module unloading to remove the pointers to mcount within the module. Another change for init calls is made to not trace calls marked with __init. The tracing can not be started until after init is done anyway. Signed-off-by: NSteven Rostedt <srostedt@redhat.com> Signed-off-by: NIngo Molnar <mingo@elte.hu>
-
- 12 8月, 2008 1 次提交
-
-
由 Arjan van de Ven 提交于
The kernel has this really nice facility where if you put "initcall_debug" on the kernel commandline, it'll print which function it's going to execute just before calling an initcall, and then after the call completes it will 1) print if it had an error code 2) checks for a few simple bugs (like leaving irqs off) and 3) print how long the init call took in milliseconds. While trying to optimize the boot speed of my laptop, I have been loving number 3 to figure out what to optimize... ... and then I wished that the same thing was done for module loading. This patch makes the module loader use this exact same functionality; it's a logical extension in my view (since modules are just sort of late binding initcalls anyway) and so far I've found it quite useful in finding where things are too slow in my boot. Signed-off-by: NArjan van de Ven <arjan@linux.intel.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NRusty Russell <rusty@rustcorp.com.au>
-
- 27 7月, 2008 1 次提交
-
-
Added early initcall (pre-SMP) support, using an identical interface to that of regular initcalls. Functions called from do_pre_smp_initcalls() could be converted to use this cleaner interface. This is required by CPU hotplug, because early users have to register notifiers before going SMP. One such CPU hotplug user is the relay interface with buffer-only channels, which needs to register such a notifier, to be usable in early code. This in turn is used by kmemtrace. Signed-off-by: NEduard - Gabriel Munteanu <eduard.munteanu@linux360.ro> Cc: Tom Zanussi <tzanussi@gmail.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
-
- 26 7月, 2008 1 次提交
-
-
由 Robert P. J. Day 提交于
Remove apparently obsolete content from init.h referring to gcc 2.9x and to "no_module_init". Signed-off-by: NRobert P. J. Day <rpjday@crashcourse.ca> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
-
- 29 4月, 2008 1 次提交
-
-
由 Adrian Bunk 提交于
Add a proper extern for late_time_init in include/linux/init.h Signed-off-by: NAdrian Bunk <bunk@kernel.org> Acked-by: NIngo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: john stultz <johnstul@us.ibm.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
-
- 20 2月, 2008 1 次提交
-
-
由 Sam Ravnborg 提交于
When adding __devinitconst etc. the __initconst variant were missed. Add this one and proper definitions for .head.text for use in .S files. The naming .head.text is preferred over .text.head as the latter will conflict for a function named head when introducing -ffunctions-sections. Signed-off-by: NSam Ravnborg <sam@ravnborg.org>
-
- 07 2月, 2008 1 次提交
-
-
由 Ingo Molnar 提交于
Signed-off-by: NIngo Molnar <mingo@elte.hu>
-
- 03 2月, 2008 1 次提交
-
-
由 Ralf Baechle 提交于
Commit 312b1485 made __INIT_REFOK expand into .section .section ".ref.text", "ax". Since the assembler doesn't tolerate stuttering in the source that broke all MIPS builds. Since with this change Sam downgraded __INIT_REFOK to just a backward compat thing and there being only a single use in the MIPS arch code the best solution is to delete both of __INIT_REFOK and __INITDATA_REFOK (which was equally broken) being unused anyway these can be deleted. Signed-off-by: NRalf Baechle <ralf@linux-mips.org> Signed-off-by: NSam Ravnborg <sam@ravnborg.org>
-
- 29 1月, 2008 4 次提交
-
-
由 Sam Ravnborg 提交于
Today we have the following annotations for functions/data referencing __init/__exit functions / data: __init_refok => for init functions __initdata_refok => for init data __exit_refok => for exit functions There is really no difference between the __init and __exit versions and simplify it and to introduce a shorter annotation the following new annotations are introduced: __ref => for functions (code) that references __*init / __*exit __refdata => for variables __refconst => for const variables Whit this annotation is it more obvious what the annotation is for and there is no longer the arbitary division between __init and __exit code. The mechanishm is the same as before - a special section is created which is made part of the usual sections in the linker script. We will start to see annotations like this: -static struct pci_serial_quirk pci_serial_quirks[] = { +static const struct pci_serial_quirk pci_serial_quirks[] __refconst = { ----------------- -static struct notifier_block __cpuinitdata cpuid_class_cpu_notifier = +static struct notifier_block cpuid_class_cpu_notifier __refdata = ---------------- -static int threshold_cpu_callback(struct notifier_block *nfb, +static int __ref threshold_cpu_callback(struct notifier_block *nfb, [The above is just random samples]. Note: No modifications were needed in modpost to support the new sections due to the newly introduced blacklisting. Signed-off-by: NSam Ravnborg <sam@ravnborg.org>
-
由 Adrian Bunk 提交于
Remove the deprecated __attribute_used__. [Introduce __section in a few places to silence checkpatch /sam] Signed-off-by: NAdrian Bunk <bunk@kernel.org> Signed-off-by: NSam Ravnborg <sam@ravnborg.org>
-
由 Sam Ravnborg 提交于
Introducing separate sections for __dev* (HOTPLUG), __cpu* (HOTPLUG_CPU) and __mem* (MEMORY_HOTPLUG) allows us to do a much more reliable Section mismatch check in modpost. We are no longer dependent on the actual configuration of for example HOTPLUG. This has the effect that all users see much more Section mismatch warnings than before because they were almost all hidden when HOTPLUG was enabled. The advantage of this is that when building a piece of code then it is much more likely that the Section mismatch errors are spotted and the warnings will be felt less random of nature. Signed-off-by: NSam Ravnborg <sam@ravnborg.org> Cc: Greg KH <greg@kroah.com> Cc: Randy Dunlap <randy.dunlap@oracle.com> Cc: Adrian Bunk <bunk@kernel.org>
-
由 Sam Ravnborg 提交于
Add a new helper: __section() that makes a section definition much shorter and more readable. Signed-off-by: NSam Ravnborg <sam@ravnborg.org>
-
- 17 10月, 2007 2 次提交
-
-
由 Jan Beulich 提交于
__setup_str_* are referenced only during boot, hence there's no need to waste image space for aligning these strings (with the aim of improving performance). Signed-off-by: NJan Beulich <jbeulich@novell.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
-
由 Ralf Baechle 提交于
I need __INIT_REFOK to fix a MODPOST warning for a few MIPS configs which have to call init code from .text very early in the game due to bootloader issues. __INITDATA_REFOK is just for consistency. Signed-off-by: NRalf Baechle <ralf@linux-mips.org> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
-
- 11 10月, 2007 1 次提交
-
-
由 Pavel Emelyanov 提交于
With the net namespaces many code leaved the __init section, thus making the kernel occupy more memory than it did before. Since we have a config option that prohibits the namespace creation, the functions that initialize/finalize some netns stuff are simply not needed and can be freed after the boot. Currently, this is almost not noticeable, since few calls are no longer in __init, but when the namespaces will be merged it will be possible to free more code. I propose to use the __net_init, __net_exit and __net_initdata "attributes" for functions/variables that are not used if the CONFIG_NET_NS is not set to save more space in memory. The exiting functions cannot just reside in the __exit section, as noticed by David, since the init section will have references on it and the compilation will fail due to modpost checks. These references can exist, since the init namespace never dies and the exit callbacks are never called. So I introduce the __exit_refok attribute just like it is already done with the __init_refok. Signed-off-by: NPavel Emelyanov <xemul@openvz.org> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
-
- 12 8月, 2007 1 次提交
-
-
由 Andi Kleen 提交于
gcc currently doesn't support attributes on types, so we can't use it function pointers. This avoids some warnings on a gcc 4.3 build. Signed-off-by: NAndi Kleen <ak@suse.de> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
-
- 01 8月, 2007 1 次提交
-
-
由 Michael Buesch 提交于
pure_initcall uses the same ID as core_initcall. I guess that's a typo and it should use its own ID. Signed-off-by: NMichael Buesch <mb@bu3sch.de> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
-
- 22 7月, 2007 1 次提交
-
-
由 Andi Kleen 提交于
gcc 4.3 supports a new __attribute__((__cold__)) to mark functions cold. Any path directly leading to a call of this function will be unlikely. And gcc will try to generate smaller code for the function itself. Please use with care. The code generation advantage isn't large and in most cases it is not worth uglifying code with this. This patch marks some common error functions like panic(), printk() as cold. This will longer term make many unlikely()s unnecessary, although we can keep them for now for older compilers. BUG is not marked cold because there is currently no way to tell gcc to mark a inline function told. Also all __init and __exit functions are marked cold. With a non -Os build this will tell the compiler to generate slightly smaller code for them. I think it currently only uses less alignments for labels, but that might change in the future. One disadvantage over *likely() is that they cannot be easily instrumented to verify them. Another drawback is that only the latest gcc 4.3 snapshots support this. Unfortunately we cannot detect this using the preprocessor. This means older snapshots will fail now. I don't think that's a problem because they are unreleased compilers that nobody should be using. gcc also has a __hot__ attribute, but I don't see any sense in using this in the kernel right now. But someday I hope gcc will be able to use more aggressive optimizing for hot functions even in -Os, if that happens it should be added. Includes compile fix from Thomas Gleixner. Cc: Jan Hubicka <jh@suse.cz> Signed-off-by: NAndi Kleen <ak@suse.de> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
-
- 17 7月, 2007 1 次提交
-
-
由 Robert P. J. Day 提交于
Signed-off-by: NRobert P. J. Day <rpjday@mindspring.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
-
- 19 5月, 2007 1 次提交
-
-
由 Sam Ravnborg 提交于
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: NSam Ravnborg <sam@ravnborg.org> Cc: Andrew Morton <akpm@linux-foundation.org>
-
- 15 5月, 2007 1 次提交
-
-
由 Prarit Bhargava 提交于
After examining what was checked in and the code base I discovered that most of 86c0baf1 wasn't necessary anymore.... So here's a patch that reverts the last part of that changeset: Revert part of 86c0baf1. The kernel has moved forward to a state where the original change is not necessary. After porting forward, this final version of the patch was applied and broke non-x86 architectures. Signed-off-by: NPrarit Bhargava <prarit@redhat.com> Cc: Russell King <rmk@arm.linux.org.uk> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
-
- 09 5月, 2007 1 次提交
-
-
由 Adrian Bunk 提交于
Add a proper protype for prepare_namespace() in include/linux/init.h. Signed-off-by: NAdrian Bunk <bunk@stusta.de> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
-
- 08 5月, 2007 1 次提交
-
-
由 Johannes Berg 提交于
Remove software_suspend() and all its users since pm_suspend(PM_SUSPEND_DISK) should be equivalent and there's no point in having two interfaces for the same thing. The patch also changes the valid_state function to return 0 (false) for PM_SUSPEND_DISK when SOFTWARE_SUSPEND is not configured instead of accepting it and having the whole thing fail later. Signed-off-by: NJohannes Berg <johannes@sipsolutions.net> Acked-by: N"Rafael J. Wysocki" <rjw@sisk.pl> Cc: Pavel Machek <pavel@ucw.cz> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
-
- 03 5月, 2007 1 次提交
-
-
由 Prarit Bhargava 提交于
Change sysenter_setup to __cpuinit. Change __INIT & __INITDATA to be cpu hotplug aware. Resolve MODPOST warnings similar to: WARNING: vmlinux - Section mismatch: reference to .init.text:sysenter_setup from .text between 'identify_cpu' (at offset 0xc040a380) and 'detect_ht' and WARNING: vmlinux - Section mismatch: reference to .init.data:vsyscall_int80_end from .text between 'sysenter_setup' (at offset 0xc041a269) and 'enable_sep_cpu' WARNING: vmlinux - Section mismatch: reference to .init.data:vsyscall_int80_start from .text between 'sysenter_setup' (at offset 0xc041a26e) and 'enable_sep_cpu' WARNING: vmlinux - Section mismatch: reference to .init.data:vsyscall_sysenter_end from .text between 'sysenter_setup' (at offset 0xc041a275) and 'enable_sep_cpu' WARNING: vmlinux - Section mismatch: reference to .init.data:vsyscall_sysenter_start from .text between 'sysenter_setup' (at offset 0xc041a27a) and 'enable_sep_cpu' Signed-off-by: NPrarit Bhargava <prarit@redhat.com> Signed-off-by: NAndi Kleen <ak@suse.de>
-
- 13 2月, 2007 1 次提交
-
-
由 Alon Bar-Lev 提交于
Current implementation stores a static command-line buffer allocated to COMMAND_LINE_SIZE size. Most architectures stores two copies of this buffer, one for future reference and one for parameter parsing. Current kernel command-line size for most architecture is much too small for module parameters, video settings, initramfs paramters and much more. The problem is that setting COMMAND_LINE_SIZE to a grater value, allocates static buffers. In order to allow a greater command-line size, these buffers should be dynamically allocated or marked as init disposable buffers, so unused memory can be released. This patch renames the static saved_command_line variable into boot_command_line adding __initdata attribute, so that it can be disposed after initialization. This rename is required so applications that use saved_command_line will not be affected by this change. It reintroduces saved_command_line as dynamically allocated buffer to match the data in boot_command_line. It also mark secondary command-line buffer as __initdata, and copies it to dynamically allocated static_command_line buffer components may hold reference to it after initialization. This patch is for linux-2.6.20-rc4-mm1 and is divided to target each architecture. I could not check this in any architecture so please forgive me if I got it wrong. The per-architecture modification is very simple, use boot_command_line in place of saved_command_line. The common code is the change into dynamic command-line. This patch: 1. Rename saved_command_line into boot_command_line, mark as init disposable. 2. Add dynamic allocated saved_command_line. 3. Add dynamic allocated static_command_line. 4. During startup copy: boot_command_line into saved_command_line. arch command_line into static_command_line. 5. Parse static_command_line and not arch command_line, so arch command_line may be freed. Signed-off-by: NAlon Bar-Lev <alon.barlev@gmail.com> Cc: Andi Kleen <ak@muc.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Richard Henderson <rth@twiddle.net> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: Russell King <rmk@arm.linux.org.uk> Cc: Ian Molton <spyro@f2s.com> Cc: Mikael Starvik <starvik@axis.com> Cc: David Howells <dhowells@redhat.com> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Kyle McMartin <kyle@mcmartin.ca> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Hirokazu Takata <takata@linux-m32r.org> Cc: Paul Mundt <lethal@linux-sh.org> Cc: Kazumoto Kojima <kkojima@rr.iij4u.or.jp> Cc: Richard Curnow <rc@rc0.org.uk> Cc: William Lee Irwin III <wli@holomorphy.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: Jeff Dike <jdike@addtoit.com> Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Cc: Miles Bader <uclinux-v850@lsi.nec.co.jp> Cc: Chris Zankel <chris@zankel.net> Cc: "Luck, Tony" <tony.luck@intel.com> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Roman Zippel <zippel@linux-m68k.org> Cc: Greg Ungerer <gerg@uclinux.org> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
-