- 18 8月, 2010 1 次提交
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由 David Howells 提交于
Make do_execve() take a const filename pointer so that kernel_execve() compiles correctly on ARM: arch/arm/kernel/sys_arm.c:88: warning: passing argument 1 of 'do_execve' discards qualifiers from pointer target type This also requires the argv and envp arguments to be consted twice, once for the pointer array and once for the strings the array points to. This is because do_execve() passes a pointer to the filename (now const) to copy_strings_kernel(). A simpler alternative would be to cast the filename pointer in do_execve() when it's passed to copy_strings_kernel(). do_execve() may not change any of the strings it is passed as part of the argv or envp lists as they are some of them in .rodata, so marking these strings as const should be fine. Further kernel_execve() and sys_execve() need to be changed to match. This has been test built on x86_64, frv, arm and mips. Signed-off-by: NDavid Howells <dhowells@redhat.com> Tested-by: NRalf Baechle <ralf@linux-mips.org> Acked-by: NRussell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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- 30 3月, 2010 1 次提交
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由 Tejun Heo 提交于
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h percpu.h is included by sched.h and module.h and thus ends up being included when building most .c files. percpu.h includes slab.h which in turn includes gfp.h making everything defined by the two files universally available and complicating inclusion dependencies. percpu.h -> slab.h dependency is about to be removed. Prepare for this change by updating users of gfp and slab facilities include those headers directly instead of assuming availability. As this conversion needs to touch large number of source files, the following script is used as the basis of conversion. http://userweb.kernel.org/~tj/misc/slabh-sweep.py The script does the followings. * Scan files for gfp and slab usages and update includes such that only the necessary includes are there. ie. if only gfp is used, gfp.h, if slab is used, slab.h. * When the script inserts a new include, it looks at the include blocks and try to put the new include such that its order conforms to its surrounding. It's put in the include block which contains core kernel includes, in the same order that the rest are ordered - alphabetical, Christmas tree, rev-Xmas-tree or at the end if there doesn't seem to be any matching order. * If the script can't find a place to put a new include (mostly because the file doesn't have fitting include block), it prints out an error message indicating which .h file needs to be added to the file. The conversion was done in the following steps. 1. The initial automatic conversion of all .c files updated slightly over 4000 files, deleting around 700 includes and adding ~480 gfp.h and ~3000 slab.h inclusions. The script emitted errors for ~400 files. 2. Each error was manually checked. Some didn't need the inclusion, some needed manual addition while adding it to implementation .h or embedding .c file was more appropriate for others. This step added inclusions to around 150 files. 3. The script was run again and the output was compared to the edits from #2 to make sure no file was left behind. 4. Several build tests were done and a couple of problems were fixed. e.g. lib/decompress_*.c used malloc/free() wrappers around slab APIs requiring slab.h to be added manually. 5. The script was run on all .h files but without automatically editing them as sprinkling gfp.h and slab.h inclusions around .h files could easily lead to inclusion dependency hell. Most gfp.h inclusion directives were ignored as stuff from gfp.h was usually wildly available and often used in preprocessor macros. Each slab.h inclusion directive was examined and added manually as necessary. 6. percpu.h was updated not to include slab.h. 7. Build test were done on the following configurations and failures were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my distributed build env didn't work with gcov compiles) and a few more options had to be turned off depending on archs to make things build (like ipr on powerpc/64 which failed due to missing writeq). * x86 and x86_64 UP and SMP allmodconfig and a custom test config. * powerpc and powerpc64 SMP allmodconfig * sparc and sparc64 SMP allmodconfig * ia64 SMP allmodconfig * s390 SMP allmodconfig * alpha SMP allmodconfig * um on x86_64 SMP allmodconfig 8. percpu.h modifications were reverted so that it could be applied as a separate patch and serve as bisection point. Given the fact that I had only a couple of failures from tests on step 6, I'm fairly confident about the coverage of this conversion patch. If there is a breakage, it's likely to be something in one of the arch headers which should be easily discoverable easily on most builds of the specific arch. Signed-off-by: NTejun Heo <tj@kernel.org> Guess-its-ok-by: NChristoph Lameter <cl@linux-foundation.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
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- 12 2月, 2010 1 次提交
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由 David S. Miller 提交于
Should mask stack with 0xf not "0x15". Noticed by Blue Swirl <blauwirbel@gmail.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 10 2月, 2010 1 次提交
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由 David S. Miller 提交于
This is mandatory for 64-bit processes, and doing it also for 32-bit processes saves a conditional in the compat case. This fixes the glibc/nptl/tst-stdio1 test case, as well as many others, on 64-bit. Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 03 4月, 2009 1 次提交
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由 Alexey Dobriyan 提交于
First argument unused since 2.3.11. [akpm@linux-foundation.org: coding-style fixes] Signed-off-by: NAlexey Dobriyan <adobriyan@gmail.com> Cc: <linux-arch@vger.kernel.org> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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- 09 1月, 2009 1 次提交
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由 Sam Ravnborg 提交于
Move all applicable EXPORT_SYMBOL()s to the file where the respective symbol is defined. Removed all the includes that are no longer needed in sparc_ksyms_32.c Comment all remaining EXPORT_SYMBOL()s in sparc_ksyms_32.c Two symbols are shared with sparc64 thus the exports were removed from the sparc_ksyms_64.c too, along with the include their ommission made redundant. Signed-off-by: NSam Ravnborg <sam@ravnborg.org> Additions by Julian Calaby: * Moved EXPORT_SYMBOL()s for prom functions to their rightful places. * Made some minor cleanups to the includes and comments of sparc_ksyms_32.c * Made another subtraction from sparc_ksyms_64.c * Updated and tidied commit message. * Rebased patch over sparc-2.6.git HEAD. * Ensured that all modified files have the correct includes. Signed-off-by: NJulian Calaby <julian.calaby@gmail.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 03 1月, 2009 1 次提交
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由 Sam Ravnborg 提交于
Renaming a few types to contain a 32 suffix makes the type names compatible with sparc64 and thus makes sharing between the two a lot easier. Note: None of these definitions are expected part of the stable ABI towards userspace. Signed-off-by: NSam Ravnborg <sam@ravnborg.org> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 05 12月, 2008 2 次提交
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由 Sam Ravnborg 提交于
It is always equals y so no need to test for it Signed-off-by: NSam Ravnborg <sam@ravnborg.org> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Sam Ravnborg 提交于
o sparc32 files with identical names to sparc64 renamed to <name>_32.S o introduced a few Kconfig helpers to simplify Makefile logic o refactored Makefile to prepare for unification - use obj-$(CONFIG_SPARC32) for sparc32 specific files - use <name>_$(BITS) for files where sparc64 has a _64 variant - sparc64 directly include a few files where sparc32 builds them, refer to these files directly (no BITS) - sneaked in -Werror as used by sparc64 o modified sparc/Makefile to use the new names for head/init_task Signed-off-by: NSam Ravnborg <sam@ravnborg.org> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 01 9月, 2008 1 次提交
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由 Adrian Bunk 提交于
While doing some easy cleanups on the sparc code I noticed that the CONFIG_SUN4 code seems to be worse than the rest - there were some "I don't know how it should work, but the current code definitely cannot work." places. And while I have seen people running Linux on machines like a SPARCstation 5 a few years ago I don't recall having seen sun4 machines, even less ones running Linux. Signed-off-by: NAdrian Bunk <bunk@kernel.org> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 18 7月, 2008 2 次提交
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由 David S. Miller 提交于
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Adrian Bunk 提交于
This patch contains the following possible cleanups: - make the following needlessly global code static: - apc.c: apc_swift_idle() - ebus.c: ebus_blacklist_irq() - ebus.c: fill_ebus_child() - ebus.c: fill_ebus_device() - entry.S: syscall_is_too_hard - etra: tsetup_sun4c_stackchk - head.S: cputyp - head.S: prom_vector_p - idprom.c: Sun_Machines[] - ioport.c: _sparc_find_resource() - ioport.c: create_proc_read_entry() - irq.c: struct sparc_irq[] - rtrap.S: sun4c_rett_stackchk - setup.c: prom_sync_me() - setup.c: boot_flags - sun4c_irq.c: sun4c_sbint_to_irq() - sun4d_irq.c: sbus_tid[] - sun4d_irq.c: struct sbus_actions - sun4d_irq.c: sun4d_sbint_to_irq() - sun4m_irq.c: sun4m_sbint_to_irq() - sun4m_irq.c: sun4m_get_irqmask() - sun4m_irq.c: sun4m_timers - sun4m_smp.c: smp4m_cross_call() - sun4m_smp.c: smp4m_blackbox_id() - sun4m_smp.c: smp4m_blackbox_current() - time.c: sp_clock_typ - time.c: sbus_time_init() - traps.c: instruction_dump() - wof.S: spwin_sun4c_stackchk - wuf.S: sun4c_fwin_stackchk - #if 0 the following unused code: - process.c: sparc_backtrace_lock - process.c: __show_backtrace() - process.c: show_backtrace() - process.c: smp_show_backtrace_all_cpus() - remove the following unused code: - entry.S: __handle_exception - smp.c: smp_num_cpus - smp.c: smp_activated - smp.c: __cpu_number_map[] - smp.c: __cpu_logical_map[] - smp.c: bitops_spinlock - traps.c: trap_curbuf - traps.c: trapbuf[] - traps.c: linux_smp_still_initting - traps.c: thiscpus_tbr - traps.c: thiscpus_mid Signed-off-by: NAdrian Bunk <bunk@kernel.org> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 10 5月, 2008 1 次提交
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由 David S. Miller 提交于
That bit isn't used on this platform. Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 08 5月, 2008 1 次提交
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由 David S. Miller 提交于
We clobber %i1 as well as %i0 for these system calls, because they give two return values. Therefore, on error, we have to restore %i1 properly or else the restart explodes since it uses the wrong arguments. This fixes glibc's nptl/tst-eintr1.c testcase. Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 27 4月, 2008 1 次提交
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由 David S. Miller 提交于
Back around the same time we were bootstrapping the first 32-bit sparc Linux kernel with a SunOS userland, we made the signal frame match that of SunOS. By the time we even started putting together a native Linux userland for 32-bit Sparc we realized this layout wasn't sufficient for Linux's needs. Therefore we changed the layout, yet kept support for the old style signal frame layout in there. The detection mechanism is that we had sys_sigaction() start passing in a negative signal number to indicate "new style signal frames please". Anyways, no binaries exist in the world that use the old stuff. In fact, I bet Jakub Jelinek and myself are the only two people who ever had such binaries to be honest. So let's get rid of this stuff. I added an assertion using WARN_ON_ONCE() that makes sure 32-bit applications are passing in that negative signal number still. Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 29 2月, 2008 1 次提交
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由 David S. Miller 提交于
Kill off some sparse warnings. Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 19 2月, 2008 1 次提交
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由 David S. Miller 提交于
The idea of this thing is we could save/restore the firmware's palette when breaking in and out of the firmware prompt. Only one driver implemented this (atyfb) and it's value is questionable. If you're just debugging you don't really care that the characters end up being purple or whatever. And we can provide better debugging and firmware command facilities with minimal in-kernel console I/O drivers. Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 09 2月, 2008 2 次提交
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由 David Howells 提交于
Remove now unnecessary inclusions of {asm,linux}/a.out.h. [akpm@linux-foundation.org: fix alpha build] Signed-off-by: NDavid Howells <dhowells@redhat.com> Cc: <linux-arch@vger.kernel.org> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 David Howells 提交于
Suppress A.OUT library support if CONFIG_ARCH_SUPPORTS_AOUT is not set. Not all architectures support the A.OUT binfmt, so the ELF binfmt should not be permitted to go looking for A.OUT libraries to load in such a case. Not only that, but under such conditions A.OUT core dumps are not produced either. To make this work, this patch also does the following: (1) Makes the existence of the contents of linux/a.out.h contingent on CONFIG_ARCH_SUPPORTS_AOUT. (2) Renames dump_thread() to aout_dump_thread() as it's only called by A.OUT core dumping code. (3) Moves aout_dump_thread() into asm/a.out-core.h and makes it inline. This is then included only where needed. This means that this bit of arch code will be stored in the appropriate A.OUT binfmt module rather than the core kernel. (4) Drops A.OUT support for Blackfin (according to Mike Frysinger it's not needed) and FRV. This patch depends on the previous patch to move STACK_TOP[_MAX] out of asm/a.out.h and into asm/processor.h as they're required whether or not A.OUT format is available. [jdike@addtoit.com: uml: re-remove accidentally restored code] Signed-off-by: NDavid Howells <dhowells@redhat.com> Cc: <linux-arch@vger.kernel.org> Signed-off-by: NJeff Dike <jdike@linux.intel.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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- 27 10月, 2007 1 次提交
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由 David S. Miller 提交于
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 21 7月, 2007 1 次提交
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由 David S. Miller 提交于
The current scheme works on static interpretation of text names, which is wrong. The output-device setting, for example, must be resolved via an alias or similar to a full path name to the console device. Paths also contain an optional set of 'options', which starts with a colon at the end of the path. The option area is used to specify which of two serial ports ('a' or 'b') the path refers to when a device node drives multiple ports. 'a' is assumed if the option specification is missing. This was caught by the UltraSPARC-T1 simulator. The 'output-device' property was set to 'ttya' and we didn't pick upon the fact that this is an OBP alias set to '/virtual-devices/console'. Instead we saw it as the first serial console device, instead of the hypervisor console. The infrastructure is now there to take advantage of this to resolve the console correctly even in multi-head situations in fbcon too. Thanks to Greg Onufer for the bug report. Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 12 5月, 2007 1 次提交
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由 Simon Arlott 提交于
Spelling fixes in arch/sparc/. Signed-off-by: NSimon Arlott <simon@fire.lp0.eu> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 09 5月, 2007 1 次提交
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由 Randy Dunlap 提交于
Remove includes of <linux/smp_lock.h> where it is not used/needed. Suggested by Al Viro. Builds cleanly on x86_64, i386, alpha, ia64, powerpc, sparc, sparc64, and arm (all 59 defconfigs). Signed-off-by: NRandy Dunlap <randy.dunlap@oracle.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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- 13 3月, 2007 1 次提交
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由 William Lee Irwin III 提交于
From: William Lee Irwin III <wli@holomorphy.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 31 1月, 2007 1 次提交
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由 Al Viro 提交于
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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- 01 7月, 2006 1 次提交
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由 Jörn Engel 提交于
Signed-off-by: NJörn Engel <joern@wohnheim.fh-wedel.de> Signed-off-by: NAdrian Bunk <bunk@stusta.de>
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- 08 2月, 2006 1 次提交
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由 Al Viro 提交于
Damn you, Eric Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
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- 13 1月, 2006 2 次提交
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由 Al Viro 提交于
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Al Viro 提交于
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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- 09 11月, 2005 2 次提交
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由 Nick Piggin 提交于
Make some changes to the NEED_RESCHED and POLLING_NRFLAG to reduce confusion, and make their semantics rigid. Improves efficiency of resched_task and some cpu_idle routines. * In resched_task: - TIF_NEED_RESCHED is only cleared with the task's runqueue lock held, and as we hold it during resched_task, then there is no need for an atomic test and set there. The only other time this should be set is when the task's quantum expires, in the timer interrupt - this is protected against because the rq lock is irq-safe. - If TIF_NEED_RESCHED is set, then we don't need to do anything. It won't get unset until the task get's schedule()d off. - If we are running on the same CPU as the task we resched, then set TIF_NEED_RESCHED and no further action is required. - If we are running on another CPU, and TIF_POLLING_NRFLAG is *not* set after TIF_NEED_RESCHED has been set, then we need to send an IPI. Using these rules, we are able to remove the test and set operation in resched_task, and make clear the previously vague semantics of POLLING_NRFLAG. * In idle routines: - Enter cpu_idle with preempt disabled. When the need_resched() condition becomes true, explicitly call schedule(). This makes things a bit clearer (IMO), but haven't updated all architectures yet. - Many do a test and clear of TIF_NEED_RESCHED for some reason. According to the resched_task rules, this isn't needed (and actually breaks the assumption that TIF_NEED_RESCHED is only cleared with the runqueue lock held). So remove that. Generally one less locked memory op when switching to the idle thread. - Many idle routines clear TIF_POLLING_NRFLAG, and only set it in the inner most polling idle loops. The above resched_task semantics allow it to be set until before the last time need_resched() is checked before going into a halt requiring interrupt wakeup. Many idle routines simply never enter such a halt, and so POLLING_NRFLAG can be always left set, completely eliminating resched IPIs when rescheduling the idle task. POLLING_NRFLAG width can be increased, to reduce the chance of resched IPIs. Signed-off-by: NNick Piggin <npiggin@suse.de> Cc: Ingo Molnar <mingo@elte.hu> Cc: Con Kolivas <kernel@kolivas.org> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Nick Piggin 提交于
Run idle threads with preempt disabled. Also corrected a bugs in arm26's cpu_idle (make it actually call schedule()). How did it ever work before? Might fix the CPU hotplugging hang which Nigel Cunningham noted. We think the bug hits if the idle thread is preempted after checking need_resched() and before going to sleep, then the CPU offlined. After calling stop_machine_run, the CPU eventually returns from preemption and into the idle thread and goes to sleep. The CPU will continue executing previous idle and have no chance to call play_dead. By disabling preemption until we are ready to explicitly schedule, this bug is fixed and the idle threads generally become more robust. From: alexs <ashepard@u.washington.edu> PPC build fix From: Yoichi Yuasa <yuasa@hh.iij4u.or.jp> MIPS build fix Signed-off-by: NNick Piggin <npiggin@suse.de> Signed-off-by: NYoichi Yuasa <yuasa@hh.iij4u.or.jp> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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- 27 7月, 2005 1 次提交
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由 Eric W. Biederman 提交于
machine_restart, machine_halt and machine_power_off are machine specific hooks deep into the reboot logic, that modules have no business messing with. Usually code should be calling kernel_restart, kernel_halt, kernel_power_off, or emergency_restart. So don't export machine_restart, machine_halt, and machine_power_off so we can catch buggy users. Signed-off-by: NEric W. Biederman <ebiederm@xmission.com> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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- 06 5月, 2005 1 次提交
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由 Coywolf Qi Hunt 提交于
Currently sparc and sparc64's UP cpu_idle() checks current pid. This is old time legacy. Now it's paranoia. Signed-off-by: NCoywolf Qi Hunt <coywolf@lovecn.org> Acked-by: NWilliam Irwin <wli@holomorphy.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 25 4月, 2005 1 次提交
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由 Tom 'spot' Callaway 提交于
Bob Breuer wrote a patch to add dump_stack for sparc. Supposedly, this was applied, but it doesn't exist in 2.6.11. This is the same patch, rediffed against 2.6.11. Signed-off-by: NTom 'spot' Callaway <tcallawa@redhat.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 17 4月, 2005 1 次提交
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由 Linus Torvalds 提交于
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
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