- 13 May, 2008 17 commits
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Jeff Dike authored
Alarm delivery could be noticably late in the !CONFIG_NOHZ case because lost ticks weren't being taken into account. This is now treated more carefully, with the time between ticks being calculated and the appropriate number of ticks delivered to the timekeeping system. Cc: Nix <nix@esperi.org.uk> Signed-off-by:
Jeff Dike <jdike@linux.intel.com> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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Jeff Dike authored
Give random.c a style workover while I'm changing it. Signed-off-by:
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Jeff Dike authored
The random driver would essentially hang if the host's /dev/random returned -EAGAIN. There was a test of need_resched followed by a schedule inside the loop, but that didn't help and it's the wrong way to work anyway. The right way is to ask for an interrupt when there is input available from the host and handle it then rather than polling. Now, when the host's /dev/random returns -EAGAIN, the driver asks for a wakeup when there's randomness available again and sleeps. The interrupt routine just wakes up whatever processes are sleeping on host_read_wait. There is an atomic_t, host_sleep_count, which counts the number of processes waiting for randomness. When this reaches zero, the interrupt is disabled. An added complication is that async I/O notification was only recently added to /dev/random (by me), so essentially all hosts will lack it. So, we use the sigio workaround here, which is to have a separate thread poll on the descriptor and send an interrupt when there is input on it. This mechanism is activated when a process gets -EAGAIN (activating this multiple times is harmless, if a bit wasteful) and deactivated by the last process still waiting. The module name was changed from "random" to "hw_random" in order for udev to recognize it. The sigio workaround needed some changes. sigio_broken was added for cases when we know that async notification doesn't work. This is now called from maybe_sigio_broken, which deals with pts devices. Signed-off-by:
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Jeff Dike authored
The top of physical memory should be below the initial process stack, not the top of the address space, at least for as long as the stack isn't known to the kernel VM system and appropriately reserved. Cc: "Christopher S. Aker" <caker@theshore.net> Signed-off-by:
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Cyrill Gorcunov authored
This patch includes page.h header into linker scripts that allow us to use PAGE_SIZE macro instead of numeric constant. To be able to include page.h into linker scripts page.h is needed for some modification - i.e. we need to use __ASSEMBLY__ and _AC macro [jdike@linux.intel.com - fixed conflict with as-layout.h] Signed-off-by:
Cyrill Gorcunov <gorcunov@gmail.com> Signed-off-by:
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Jiri Olsa authored
I just saw similar patches in the janitor kernel's list, and spotted place it fits. Signed-off-by:
Jiri Olsa <olsajiri@gmail.com> Signed-off-by:
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Robert P. J. Day authored
Add the BLOCK dependency for RAW_DRIVER, to match what's in drivers/char/Kconfig. Also, while we're there, update the alleged obsolesence of RAW_DRIVER since it doesn't seem to be going away any time soon. Signed-off-by:
Robert P. J. Day <rpjday@crashcourse.ca> Signed-off-by:
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Jeff Dike authored
From: Robert P. J. Day <rpjday@crashcourse.ca> Use newer, non-deprecated __SPIN_LOCK_UNLOCKED macro. Signed-off-by:
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Jeff Dike authored
UML's supposed nanosecond clock interacts badly with NTP when NTP decides that the clock has drifted ahead and needs to be slowed down. Slowing down the clock is done by decrementing the cycle-to-nanosecond multiplier, which is 1. Decrementing that gives you 0 and time is stopped. This is fixed by switching to a microsecond clock, with a multiplier of 1000. Signed-off-by:
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Jeff Dike authored
From: Adrian Bunk <bunk@kernel.org> This patch removes the unused and broken (the normal asm/keyboard.h files no longer exists) include/asm-um/keyboard.h Signed-off-by:
Adrian Bunk <bunk@kernel.org> Signed-off-by:
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Jeff Dike authored
Reintroduce uml_kmalloc for the benefit of UML libc code. The previous tactic of declaring __kmalloc so it could be called directly from the libc side of the house turned out to be getting too intimate with slab, and it doesn't work with slob. So, the uml_kmalloc wrapper is back. It calls kmalloc or whatever that translates into, and libc code calls it. kfree is left alone since that still works, leaving a somewhat inconsistent API. Signed-off-by:
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Johann Felix Soden authored
Error returns are negative. Signed-off-by:
Johann Felix Soden <johfel@users.sourceforge.net> Signed-off-by:
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Jeff Dike authored
Tidy the ptrace interface code. Removed a bunch of unused macros. Started converting register sets from arrays of longs to structures. Signed-off-by:
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Jeff Dike authored
There's no reason for the _kern in hppfs_kern.c, so move it to hppfs.c. Signed-off-by:
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Jeff Dike authored
hppfs tidying and fixes noticed during hch's get_inode work - style fixes a copy_to_user got its return value checked hppfs_write no longer fiddles file->f_pos because it gets and returns pos in its arguments hppfs_delete_inode dputs the underlyng procfs dentry stored in its private data and mntputs the vfsmnt stashed in s_fs_info hppfs_put_super no longer needs to mntput the s_fs_info, so it no longer needs to exist hppfs_readlink and hppfs_follow_link were doing a bunch of stuff with a struct file which they didn't use there is now a ->permission which calls generic_permission get_inode was always returning 0 for some reason - it now returns an inode if nothing bad happened Signed-off-by: -
Jeff Dike authored
A few random style fixes. Signed-off-by:
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Jeff Dike authored
Redo how host capabilities are recorded at startup and disabled on the command line. There are now explicit variables saying what's been disabled by the command line rather than the implicitness of the have_* variable being zero. The capability variables now start at zero and are set to one as their capabilities are found to be present on the host. Signed-off-by:
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- 12 May, 2008 23 commits
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Linus Torvalds authored
Because it's not correct with a non-preemptable BKL and just causes PREEMPT kernels to have longer latencies than non-PREEMPT ones (which is obviously not the point of it at all). Of course, that config option actually got removed as an option earlier, so for now this basically disables it entirely, but if BKL preemption is ever resurrected it will be a meaningful optimization. And in the meantime, it at least documents the intent of the code, while not doing the wrong thing. Signed-off-by: -
git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6Linus Torvalds authored
* git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6: [CIFS] don't allow demultiplex thread to exit until kthread_stop is called [CIFS] when not using unix extensions, check for and set ATTR_READONLY on create and mkdir [CIFS] add local struct inode pointer to cifs_setattr [CIFS] cifs_find_tcp_session cleanup
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Linus Torvalds authored
We should not go through the task pointer to get at the thread info, since it's usually cheaper to just access the thread info directly. So don't make the code look up 'current', when we can just use the thread info accessor functions directly. This generally avoids one level of indirection and tends to work better together with code that also looks at other thread flags (eg preempt_count). Signed-off-by: -
git://git.kernel.org/pub/scm/linux/kernel/git/hpa/linux-2.6-inttypesLinus Torvalds authored
* git://git.kernel.org/pub/scm/linux/kernel/git/hpa/linux-2.6-inttypes: types: s390: fix #ifdef reversal in <asm-s390/types.h>
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git://ftp.linux-mips.org/pub/scm/upstream-linusLinus Torvalds authored
* 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus: (28 commits) [MIPS] Pb1000: bury the remnants of the PCI code [MIPS] Fix build failure in mips oprofile code [MIPS] fix warning message on SMP kernels [MIPS] markeins: build fix [MIPS] ELF handling - use SELFMAG instead of numeric constant [MIPS] Get rid of __ilog2 [MIPS] Fix __fls for non-MIPS32/MIPS64 cpus [MIPS] XXS1500 code style cleanup [MIPS] MTX-1 code style cleanup [MIPS] Pb1200/DBAu1200 code style cleanup [MIPS] Pb1550 code style cleanup [MIPS] Pb1500 code style cleanup [MIPS] Pb1100 code style cleanup [MIPS] Pb1000 code style cleanup [MIPS] DBAu1xx0 code style cleanup [MIPS] Alchemy PCI code style cleanup [MIPS] Alchemy common code style cleanup [MIPS] Alchemy common headers style cleanup [MIPS] Add empty argument parenthesis to GCC_IMM_ASM [MIPS] msp_hwbutton.c: minor irq handler cleanups ...
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H. Peter Anvin authored
The #ifdef for the integer types was reversed; the standard pattern in these files are: #ifndef __s390x__ /* 32-bit code */ #else /* 64-bit code */ #endif Stick with the original pattern, but make sure the 32-bit code actually comes first! Reported by Al Viro. Signed-off-by:H. Peter Anvin <hpa@zytor.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Al Viro <viro@zeniv.linux.org.uk>
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Sergei Shtylyov authored
Signed-off-by:
Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by:
Ralf Baechle <ralf@linux-mips.org>
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Thiemo Seufer authored
This patch fixes a warning-as-error induced build failure of 64bit MIPS kernels. Signed-off-by:
Thiemo Seufer <ths@networkno.de> Signed-off-by:
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Thiemo Seufer authored
This patch fixes a (harmless) warning message. Signed-off-by:
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Adrian Bunk authored
This patch fixes the following build errror caused by commit 7dffa3c6 (ntp: handle leap second via timer): <-- snip --> ... CC arch/mips/emma2rh/markeins/setup.o /home/bunk/linux/kernel-2.6/git/linux-2.6/arch/mips/emma2rh/markeins/setup.c:79: error: conflicting types for 'clock' /home/bunk/linux/kernel-2.6/git/linux-2.6/include/linux/clocksource.h:96: error: previous declaration of 'clock' was here make[2]: *** [arch/mips/emma2rh/markeins/setup.o] Error 1 <-- snip --> [Ralf: reformated to 80 colums after the fix and marked emma2rh_clock as __initdata] Signed-off-by:
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Cyrill Gorcunov authored
Signed-off-by:
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Ralf Baechle authored
56a6b1eb was a bit too conservative and left __ilog2 around which is only used as an internal function for other bitops. Signed-off-by:
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Thomas Bogendoerfer authored
Only MIPS32 and MIPS64 CPUs implement clz/dclz. Therefore don't export __ilog2() for non MIPS32/MIPS64 cpus and use generic __fls bitop code for these cpus. Signed-off-by:
Thomas Bogendoerfer <tsbogend@alpha.franken.de> Signed-off-by:
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Sergei Shtylyov authored
Fix several errors and warnings given by checkpatch.pl: - use of C99 // comments; - using simple_strtol() where strict_strtol() could be used. In addition to these changes, also do the following: - remove needless parentheses; - remove unneeded numeric literal type cast; - insert spaces between operator and its operands; - remove excess new lines; - remove space after the type cast's closing parenthesis; - insert missing space before closing brace in the structure initializer; - fix typos, capitalize acronyms, etc. in the comments; - update MontaVista copyright; - remove Pete Popov's old email address... Signed-off-by:
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Sergei Shtylyov authored
Fix many errors and warnings given by checkpatch.pl: - space after opening and before closing parentheses; - use of C99 // comments; - leading spaces instead of tabs; - brace not on the same line with 'else' in the 'if' statement; statement; - printk() without KERN_* facility level; - using simple_strtol() where strict_strtol() could be used. - including <asm/gpio.h> instead of <linux/gpio.h>. In addition to these changes, also do the following: - insert spaces between operator and its operands; - replace tab between the function type and name with space in mtx1_pci_idsel() declaration; - remove space after the type cast's closing parenthesis; - insert missing space before closing brace in the array/structure initializers; - update MontaVista copyright; - remove Pete Popov's old email address... Signed-off-by:
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Sergei Shtylyov authored
Fix several errors and warnings given by checkpatch.pl: - use of C99 // comments; - initialization of a 'static' variable to 0; - space after opening and before closing parentheses; - missing space between 'for' and opening parenthesis; - macros with complex values not enclosed in parentheses; - printk() without KERN_* facility level; - unnecessary braces for single-statement block; - using simple_strtol() where strict_strtol() could be used; - line over 80 characters. In addition to these changes, also do the following: - mention DBAu1200 board in the Makefile; - replace the group of #include/#ifdef directives by a single #include <au1xxx.h> since this header contains the needed stuff; - properly indent the blocks; - insert spaces between operator and its operands, remove excess spaces there; - remove needless parentheses and add some for clarity; - replace numeric literals/expressions with the matching macros; - remove space after the type cast's closing parenthesis; - reduce pb1200_setup_cascade() to the single 'return' statement; - reduce the number of printed empty lines in the so-called CPLD workaround; - remove #undef AU1X00_EXTERNAL_INT since that macro is not defined anywhere; - replace spaces after the macro name with tabs in the #define directives; - remove excess tabs after the macro name in the #define directives; - fix typo in the BCSR_RESETS_PWMR1mUX macro's name; - group all Pb1200 PCMCIA definitions together; - put the function's result type and name/parameters on the same line; - insert missing and remove excess new lines; - make the multi-line comment style consistent with the kernel style elsewhere by adding empty first line and/or adding space/asterisk on their left side; - fix typos/errors, capitalize acronyms, etc. in the comments; - combine some comments; - update MontaVista copyright; - remove Pete Popov's old email address... Signed-off-by:
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Sergei Shtylyov authored
Fix a few errors and warnings given by checkpatch.pl: - macros with complex values not enclosed in parentheses; - printk() without KERN_* facility level; - unnecessary braces for single-statement block; - using simple_strtol() where strict_strtol() could be used. In addition to these changes, also do the following: - replace numeric literals with the matching macros; - properly indent the code and the array initializers; - insert spaces between operator and its operands, also remove excess spaces there; - remove space after the type cast's closing parenthesis; - insert missing space before closing brace in the array initializers; - replace spaces after the macro name with tabs in the #define directives, also sometimes insert space there for better looks; - remove excess tabs after the macro name in the #define directives; - fix typos/errors, capitalize acronyms, etc. in the comments; - make the multi-line comment style consistent with the kernel style elsewhere by adding empty first line; - update MontaVista copyright; - remove Pete Popov's old email address... Signed-off-by:
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Sergei Shtylyov authored
Fix several errors and warnings given by checkpatch.pl: - use of C99 // comments; - printk() without KERN_* facility level; - unnecessary braces for single-statement block; - using simple_strtol() where strict_strtol() could be used. In addition to these changes, also do the following: - replace numeric literals/expressions with the matching macros; - insert spaces between operator and its operands; - properly indent the code and the array initializers; - remove useless #if dirctive from board_setup(); - remove needless parentheses; - remove unneeded type casts; - remove excess new lines; - make hexadecimal literals all lower case; - remove space after the type cast's closing parenthesis; - insert missing space before closing brace in the array initializers; - replace spaces after the macro name with tabs in the #define directives, also sometimes insert space there for better looks; - fix typos/errors, capitalize acronyms, etc. in the comments; - update MontaVista copyright; - remove Pete Popov's old email address... Signed-off-by:
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Sergei Shtylyov authored
Fix several errors and warnings given by checkpatch.pl: - space between asterisk and variable name; - use of C99 // comments; - using simple_strtol() where strict_strtol() could be used. In addition to these changes, also do the following: - properly indent the code; - remove space after the type cast's closing parenthesis; - replace numeric literals/expressions with the matching macros; - replace spaces after the macro name with tabs in the #define directives, and sometimes insert spaces there; - fix typos/errors, capitalize acronyms, etc. in the comments; - make the multi-line comment style consistent with the kernel style elsewhere by adding empty first line; - update MontaVista copyright; - remove Pete Popov's old email address... Signed-off-by:
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Sergei Shtylyov authored
Fix several errors and warnings given by checkpatch.pl: - use of C99 // comments; - brace not on the same line with condition in the 'switch' statement; - printk() without KERN_* facility level; - unnecessary braces for single-statement block; - using simple_strtol() where strict_strtol() could be used. In addition to these changes, also do the following: - properly indent the 'switch' statement; - remove needless parentheses; - insert spaces between operator and its operands; - replace numeric literals/expressions with the matching macros; - remove useless #if dirctive from board_setup(); - remove unneeded numeric literal type casts; - remove space after the type cast's closing parenthesis; - replace spaces after the macro name with tabs in the #define directives, and sometimes insert spaces there; - remove excess new lines; - fix typos/errors, capitalize acronyms, etc. in the comments; - make the multi-line comment style consistent with the kernel style elsewhere by adding empty first/last line; - combine some comments; - update MontaVista copyright; - remove Pete Popov's old email address... Signed-off-by:
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Sergei Shtylyov authored
Fix several errors and warnings given by checkpatch.pl: - macros with complex values not enclosed in parentheses; - leading spaces instead of tabs; - printk() without KERN_* facility level; - using simple_strtol() where strict_strtol() could be used; - line over 80 characters. In addition to these changes, also do the following: - initialize variable instead of assigning value later where it makes sense; - insert spaces between operator and its operands, also remove excess spaces there; - remove unneeded numeric literal type casts; - remove needless parentheses; - remove space after the type cast's closing parenthesis; - insert missing space before closing brace in the array initializers; - replace spaces after the macro name with tabs in the #define directives; - remove excess tabs after the macro name in the #define directives; - fix typos/errors, capitalize acronyms, etc. in the comments; - make the multi-line comment style consistent with the kernel style elsewhere by adding empty first/last line; - update MontaVista copyright; - remove Pete Popov's old email address... Signed-off-by:
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Sergei Shtylyov authored
Fix 15 errors and 4 warnings given by checkpatch.pl: - space between the asterisk and variable name; - space after opening and before closing parentheses; - leading spaces instead of tabs; - printk() without KERN_* facility level; - unnecessary braces for single-statement block; - line over 80 characters. In addition to these changes, also do the following: - combine the nested 'if' statements into one when possible; - remove needless parentheses; - add missing and remove excess spaces between operator and its operands; - fix printk() format specifiers mismatching the argument types; - put the function's result type and name/parameters on the same line; - insert missing and remove excess new lines; - properly indent multi-line expressions; - make the multi-line comment style consistent with the kernel style elsewhere by adding empty first line; - fix typos, capitalize acronyms, etc. in the comments; - update MontaVista copyright; - remove Pete Popov's old email address... Signed-off-by:
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Sergei Shtylyov authored
Fix many errors and warnings given by checkpatch.pl: - use of C99 // comments; - missing space between the type and asterisk in a variable declaration; - space between the asterisk and function/variable name; - leading spaces instead of tabs; - space after opening and before closing parentheses; - initialization of a 'static' variable to 0; - missing spaces around assignement/comparison operator; - brace not on the same line with condition (or 'else') in the 'if'/'switch' statement; - missing space between 'if'/'for'/'while' and opening parenthesis; - use of assignement in 'if' statement's condition; - printk() without KERN_* facility level; - EXPORT_SYMBOL() not following its function immediately; - unnecessary braces for single-statement block; - adding new 'typedef' (where including <linux/types.h> will do); - use of 'extern' in the .c file (where it can be avoided by including header); - line over 80 characters. In addition to these changes, also do the following: - insert missing space after opening brace and/or before closing brace in the structure initializers; - insert spaces between operator and its operands; - put the function's result type and name/parameters on the same line; - properly indent multi-line expressions; - remove commented out code; - remove useless initializers and code; - remove needless parentheses; - fix broken/excess indentation; - add missing spaces between operator and its operands; - insert missing and remove excess new lines; - group 'else' and 'if' together where possible; - make au1xxx_platform_init() 'static'; - regroup variable declarations in pm_do_freq() for prettier look; - replace numeric literals with the matching macros; - fix printk() format specifiers mismatching the argument types; - make the multi-line comment style consistent with the kernel style elsewhere by adding empty first line and/or adding space on their left side; - make two-line comments that only have one line of text one-line; - fix typos/errors, capitalize acronyms, etc. in the comments; - fix/remove obsolete references in the comments; - reformat some comments; - add comment about the CPU:counter clock ratio to calc_clock(); - update MontaVista copyright; - remove Pete Popov's and Steve Longerbeam's old email addresses... Signed-off-by:
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