Commits · 09c2e123359cbaeb6b1ea6393fb4ec30e1d46aef · nexedi / linux

11 Jan, 2005 40 commits

[PATCH] 4level swapoff hang fix · 09c2e123

Hugh Dickins authored Jan 11, 2005

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: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

09c2e123

[PATCH] cputime: microsecond based cputime for s390 · a6ab0c16

Martin Schwidefsky authored Jan 11, 2005

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: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

a6ab0c16

[PATCH] cputime: introduce cputime · 0a71336b

Martin Schwidefsky authored Jan 11, 2005

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: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

0a71336b

[PATCH] acpi_smp_processor_id() warning fix · 0fada656

Andrew Morton authored Jan 11, 2005

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: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

0fada656

[PATCH] m32r: include nodemask.h for build fix · d6837efc

Hirokazu Takata authored Jan 11, 2005

Signed-off-by: Hirokazu Takata <takata@linux-m32r.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

d6837efc

[PATCH] Fix index calculations in clear_page_range. · 62d02c40

Martin Schwidefsky authored Jan 11, 2005

pgd_index(end + PGDIR_SIZE - 1) returns 0 if end + PGDIR_SIZE - 1 is beyond
the end of the address space.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

62d02c40

[PATCH] acct_update_integrals speedup · 947282e6

Jay Lan authored Jan 11, 2005

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: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

947282e6

[PATCH] uninline __do_page_cache_readahead() · b82a839d

Andrew Morton authored Jan 11, 2005

erk, this monster has three callsites.
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

b82a839d

[PATCH] Update Geert's address in CREDITS · 307bc76b

Geert Uytterhoeven authored Jan 10, 2005

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

307bc76b

[PATCH] remove outdated smbfs ChangeLog · 4f1797a5

Adrian Bunk authored Jan 10, 2005

The patch below removes an outdated samba ChangeLog file.
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>