- Jan 13, 2006
-
-
Al Viro authored
Signed-off-by:
Al Viro <viro@zeniv.linux.org.uk> Signed-off-by:
Andrew Morton <akpm@osdl.org> Signed-off-by:
Linus Torvalds <torvalds@osdl.org>
-
Al Viro authored
Signed-off-by:
-
Al Viro authored
Signed-off-by:
-
Al Viro authored
Signed-off-by:
-
Al Viro authored
Signed-off-by:
-
Al Viro authored
Signed-off-by:
-
Al Viro authored
Signed-off-by:
-
Al Viro authored
Signed-off-by:
-
Al Viro authored
Signed-off-by:
-
Al Viro authored
Signed-off-by:
-
Al Viro authored
Signed-off-by:
-
Al Viro authored
Signed-off-by:
-
Al Viro authored
Signed-off-by:
-
Al Viro authored
Signed-off-by:
-
Al Viro authored
Signed-off-by:
-
Al Viro authored
Signed-off-by:
-
Al Viro authored
Signed-off-by:
-
Al Viro authored
Signed-off-by:
-
Al Viro authored
Signed-off-by:
-
Al Viro authored
Signed-off-by:
-
Al Viro authored
Signed-off-by:
-
Al Viro authored
Signed-off-by:
-
Al Viro authored
Signed-off-by:
-
Al Viro authored
Signed-off-by:
-
Al Viro authored
Signed-off-by:
-
Al Viro authored
Signed-off-by:
-
Al Viro authored
Signed-off-by:
-
Al Viro authored
Signed-off-by:
-
akpm@osdl.org authored
) From: Al Viro <viro@ftp.linux.org.uk> task_pt_regs() needs the same offset-by-8 to match copy_thread() Signed-off-by:
-
Al Viro authored
Signed-off-by:
-
Al Viro authored
Signed-off-by:
-
Al Viro authored
Signed-off-by:
-
Al Viro authored
Signed-off-by:
-
akpm@osdl.org authored
) From: Al Viro <viro@ftp.linux.org.uk> rename alpha_task_regs() to task_pt_regs(), switch open-coded instances to use of the helper. Signed-off-by:
-
Al Viro authored
use task_stack_page() for accesses to stack page of task in alpha-specific parts of tree Signed-off-by:
-
Al Viro authored
use task_thread_info() for accesses to thread_info of task in arch/alpha and include/asm-alpha Signed-off-by:
-
Al Viro authored
Patchset annotates arch/* uses of ->thread_info. Ones that really are about access of thread_info of given process are simply switched to task_thread_info(task); ones that deal with access to objects on stack are switched to new helper - task_stack_page(). A _lot_ of the latter are actually open-coded instances of "find where pt_regs are"; those are consolidated into task_pt_regs(task) (many architectures actually have such helper already). Note that these annotations are not mandatory - any code not converted to these helpers still works. However, they clean up a lot of places and have actually caught a number of bugs, so converting out of tree ports would be a good idea... As an example of breakage caught by that stuff, see i386 pt_regs mess - we used to have it open-coded in a bunch of places and when back in April Stas had fixed a bug in copy_thread(), the rest had been left out of sync. That required two followup patches (the latest - just before 2.6.15) _and_ still had left /proc/*/stat eip field broken. Try ps -eo eip on i386 and watch the junk... This patch: new helper - task_stack_page(task). Returns pointer to the memory object containing task stack; usually thread_info of task sits in the beginning of that object. Signed-off-by:
-
akpm@osdl.org authored
) From: Nick Piggin <nickpiggin@yahoo.com.au> Track the last waker CPU, and only consider wakeup-balancing if there's a match between current waker CPU and the previous waker CPU. This ensures that there is some correlation between two subsequent wakeup events before we move the task. Should help random-wakeup workloads on large SMP systems, by reducing the migration attempts by a factor of nr_cpus. Signed-off-by:
Ingo Molnar <mingo@elte.hu> Signed-off-by:
Nick Piggin <npiggin@suse.de> Signed-off-by:
-
akpm@osdl.org authored
) From: Ingo Molnar <mingo@elte.hu> This is the latest version of the scheduler cache-hot-auto-tune patch. The first problem was that detection time scaled with O(N^2), which is unacceptable on larger SMP and NUMA systems. To solve this: - I've added a 'domain distance' function, which is used to cache measurement results. Each distance is only measured once. This means that e.g. on NUMA distances of 0, 1 and 2 might be measured, on HT distances 0 and 1, and on SMP distance 0 is measured. The code walks the domain tree to determine the distance, so it automatically follows whatever hierarchy an architecture sets up. This cuts down on the boot time significantly and removes the O(N^2) limit. The only assumption is that migration costs can be expressed as a function of domain distance - this covers the overwhelming majority of existing systems, and is a good guess even for more assymetric systems. [ People hacking systems that have assymetries...
-
Ingo Molnar authored
Add per-arch sched_cacheflush() which is a write-back cacheflush used by the migration-cost calibration code at bootup time. Signed-off-by:
-
