- 11 Jan, 2005 40 commits
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Anton Blanchard authored
I've noticed a problem where xtime and gettimeofday could get out of sync if interrupts are disabled for too long (eg long kernel code paths or dropping into the debugger for a while). We correctly replay lost jiffies but in that loop time_sync_xtime syncs the intermediate values of xtime up with the current value of gettimeofday. So xtime jumps by a bunch and from then on it is ahead of gettimeofday and we never resync the two. I guess this is to avoid xtime going backwards. The patch below creates a __do_gettimeofday where you can pass in a tb value and sync the intermediate values of xtime properly. Note that the time_sync_xtime check only stops the seconds from going backwards, the ns component still could couldnt it? Considering this is hard to get right, should we switch to the time interpolator stuff? The only problem there is it might be trouble for systemcfg (which exports stuff to do userspace gettimeofday). Signed-off-by:
Anton Blanchard <anton@samba.org> Signed-off-by:
Andrew Morton <akpm@osdl.org> Signed-off-by:
Linus Torvalds <torvalds@osdl.org>
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Anton Blanchard authored
I've had to explain to a number of people that a 0x700 exception is often a BUG(). Make this crystal clear by printing the BUG information in the xmon exception printout. Signed-off-by:
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Anton Blanchard authored
It turns out gcc decides to allocate a stack frame in the current xmon setjmp function. This means the stack linkage we save away is destroyed when returning from it and its just a matter of time before another function stomps on it. This should fix the problem Linas reported this week. Signed-off-by:
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Anton Blanchard authored
Here are some changes to the oops printout, stuff that would have been useful when I was chasing various bugs. - print out instructions around the fail (3/4 before 1/4 after). - print out CTR and CR registers, make some space by cutting down XER (its only 32bit) - always print the DAR and DSISR, its sometimes useful - print_modules() like x86 Signed-off-by:
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Anton Blanchard authored
We were missing an include of the new nodemask.h and NUMA enabled builds broke. Signed-off-by:
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Anton Blanchard authored
I was running some tests and noticed BUG() handling wasnt working as expected. The kprobes code has some code to check for breakpoint removal races and only checks for one opcode. It turns out there are many forms of the breakpoint instruction, comparing against one is not good enough. For the momemt remove the code in question so BUG()s work again and we can discuss a better solution (I thought kprobes was emulating instructions or running them out of line). Signed-off-by:
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Zwane Mwaikambo authored
This should allow for easier adding of hotplug cpu support for other PPC64 subarchs. The patch is untested but does compile with and without hotplug cpu on pSeries and G5 configs. What can get slightly confusing is the fact that both ppc_md and smp_ops have cpu_die members. Signed-off-by:
Zwane Mwaikambo <zwane@arm.linux.org.uk> Signed-off-by:
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Thomas Gleixner authored
Include missing header to avoid implicit function declaration warnings Signed-off-by:
Thomas Gleixner <tglx@linutronix.de> Signed-off-by:
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Thomas Gleixner authored
The MMCR0_PMXE is already defined in reg.h, so no need to redefine it here. Signed-off-by:
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Thomas Gleixner authored
The idle-thread-preemption-fix.patch in mm1/2 leads to a stalled box on PPC machines which do not provide a powersave function and therefor poll the idle loop with interrupts disabled. The patch reenables interrupts. Signed-off-by:
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Hugh Dickins authored
The 4level mods have caused 2level swapoff to miss entries and hang. There's probably a one-line fix for that, but the error is really caused by previous awkwardness - each mask applied on two levels, an "address" that's an offset plus an "offset" that's an address. Simplify the four levels to behave in the same address/next/end way and the bug vanishes. Signed-off-by:
Hugh Dickins <hugh@veritas.com> Signed-off-by:
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Martin Schwidefsky authored
This patch adds the architecture magic to replace the jiffies based cputime with microsecond based cputime and it adds code to calculate involuntary wait time. With this patch the numbers reported by top and ps when running on LPAR or z/VM are finally not junk anymore. Signed-off-by:
Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by:
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Martin Schwidefsky authored
This patch introduces the concept of (virtual) cputime. Each architecture can define its method to measure cputime. The main idea is to define a cputime_t type and a set of operations on it (see asm-generic/cputime.h). Then use the type for utime, stime, cutime, cstime, it_virt_value, it_virt_incr, it_prof_value and it_prof_incr and use the cputime operations for each access to these variables. The default implementation is jiffies based and the effect of this patch for architectures which use the default implementation should be neglectible. There is a second type cputime64_t which is necessary for the kernel_stat cpu statistics. The default cputime_t is 32 bit and based on HZ, this will overflow after 49.7 days. This is not enough for kernel_stat (ihmo not enough for a processes too), so it is necessary to have a 64 bit type. The third thing that gets introduced by this patch is an additional field for the /proc/stat interface: cpu steal time. An architecture can account cpu steal time by calls to the account_stealtime function. The cpu which backs a virtual processor doesn't spent all of its time for the virtual cpu. To get meaningful cpu usage numbers this involuntary wait time needs to be accounted and exported to user space. From: Hugh Dickins <hugh@veritas.com> The p->signal check in account_system_time is insufficient. If the timer interrupt hits near the end of exit_notify, after EXIT_ZOMBIE has been set, another cpu may release_task (NULLifying p->signal) in between account_system_time's check and check_rlimit's dereference. Nor should account_it_prof risk send_sig. But surely account_user_time is safe? Signed-off-by:
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Andrew Morton authored
Suppress an "using smp_processor_id in preemptible code" warning. The idle thread isn't preemptible, so we can simply use _smp_processor_id(). Signed-off-by:
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Hirokazu Takata authored
Signed-off-by:
Hirokazu Takata <takata@linux-m32r.org> Signed-off-by:
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Martin Schwidefsky authored
pgd_index(end + PGDIR_SIZE - 1) returns 0 if end + PGDIR_SIZE - 1 is beyond the end of the address space. Signed-off-by:
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Jay Lan authored
This patch is to provide extra check in acct_update_integrals() function. The routine would return if 'delta' is 0 to take quick exit if nothing to be done. Signed-off-by:
Jay Lan <jlan@sgi.com> Signed-off-by:
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Andrew Morton authored
erk, this monster has three callsites. Signed-off-by:
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Geert Uytterhoeven authored
Signed-off-by:
Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by:
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Adrian Bunk authored
The patch below removes an outdated samba ChangeLog file. Signed-off-by:
Adrian Bunk <bunk@stusta.de> Signed-off-by:
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Jan Harkes authored
Remove '_psdev' from the Coda sysfs device class name. Signed-off-by:
Jan Harkes <jaharkes@cs.cmu.edu> Signed-off-by:
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Jan Harkes authored
Remove coda_mknod as the code was never used, coda_hasmknod was always 0. (reported by Adrian Bunk) Signed-off-by:
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Jan Harkes authored
The patch below makes some needlessly global code static. Signed-off-by:
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Jan Harkes authored
Use list_for_each_entry_safe to make code more readable. Compile tested. Signed-off-by:
Domen Puncer <domen@coderock.org> Signed-off-by:
Maximilian Attems <janitor@sternwelten.at> Signed-off-by:
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Jan Harkes authored
This patch adds bounds checks for tainted scalars (reported by Brian Fulton and Ted Unangst, Coverity Inc.). Signed-off-by:
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Bjorn Helgaas authored
Use pci_name() rather than "(B%d,I%d,P%d)" when printing PCI IRQ information. Compiled but untested. Signed-off-by:
Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by:
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Randy Dunlap authored
Fix 3 instances of bad calls to i2o_pci_free(), from init to exit code sections: Error: ./drivers/message/i2o/pci.o .init.text refers to 000000f7 R_386_PC32 .exit.text Error: ./drivers/message/i2o/pci.o .init.text refers to 000003bc R_386_PC32 .exit.text Error: ./drivers/message/i2o/pci.o .init.text refers to 00000572 R_386_PC32 .exit.text Signed-off-by:
Randy Dunlap <rddunlap@osdl.org> Signed-off-by:
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Andries E. Brouwer authored
Last month I removed the "or too many mounted filesystems" part from an error message in mount(8) - NR_SUPER has not been used in a very long time. Also NR_RESERVED_FILES is unused today. Signed-off-by:
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Adrian Bunk authored
The patch below makes four needlessly global functions static. Signed-off-by:
William Irwin <wli@holomorphy.com> Signed-off-by:
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Adrian Bunk authored
The patch below makes the needlessly global function ext2_xattr_list static. Signed-off-by:
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Adrian Bunk authored
- make some needlessly global code static - super.c: remove the unused global function ext3_panic Signed-off-by:
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Adrian Bunk authored
The patch below makes a needessly global struct in the efs code static. Signed-off-by:
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Yoichi Yuasa authored
This patch had fixed build error about NEC VR4100 series. * add #include <linux/kernel.h> for printk() This patch had already applied to Ralf's cvs tree. Signed-off-by:
Yoichi Yuasa <yuasa@hh.iij4u.or.jp> Signed-off-by:
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Adrian Bunk authored
The patch below makes some needlessly global functions static. Signed-off-by:
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Vincent Hanquez authored
Signed-off-by:
Vincent Hanquez <tab@snarc.org> Signed-off-by:
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Peter Osterlund authored
This patch removes an unused variable in the synaptics_data struct and deletes a no longer helpful comment. I don't think this has been used since the very first synaptics kernel patch I submitted that did all processing in kernel space instead of delegating most of it to the X server. Signed-off-by:
Peter Osterlund <petero2@telia.com> Signed-off-by:
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Peter Osterlund authored
When I was editing cdrom.h, I noticed that fs/isofs/compress.c was recompiled. This patch removes the useless #include that caused the unnecessary recompilation. Signed-off-by:
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Peter Osterlund authored
Mention that a new DVD+RW disc has to be formatted before first use. Signed-off-by:
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Peter Osterlund authored
Put function prototypes on a single source line to make them more grep-friendly. Signed-off-by:
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Peter Osterlund authored
Make two needlessly global functions static. Signed-off-by:
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