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  1. 22 11月, 2006 6 次提交
    • D
      WorkStruct: Pass the work_struct pointer instead of context data · 65f27f38
      由 David Howells 提交于 
      Pass the work_struct pointer to the work function rather than context data.
The work function can use container_of() to work out the data.

For the cases where the container of the work_struct may go away the moment the
pending bit is cleared, it is made possible to defer the release of the
structure by deferring the clearing of the pending bit.

To make this work, an extra flag is introduced into the management side of the
work_struct.  This governs auto-release of the structure upon execution.

Ordinarily, the work queue executor would release the work_struct for further
scheduling or deallocation by clearing the pending bit prior to jumping to the
work function.  This means that, unless the driver makes some guarantee itself
that the work_struct won't go away, the work function may not access anything
else in the work_struct or its container lest they be deallocated..  This is a
problem if the auxiliary data is taken away (as done by the last patch).

However, if the pending bit is *not* cleared before jumping to the work
function, then the work function *may* access the work_struct and its container
with no problems.  But then the work function must itself release the
work_struct by calling work_release().

In most cases, automatic release is fine, so this is the default.  Special
initiators exist for the non-auto-release case (ending in _NAR).
Signed-Off-By: NDavid Howells <dhowells@redhat.com>
      65f27f38
    • D
      WorkStruct: Merge the pending bit into the wq_data pointer · 365970a1
      由 David Howells 提交于 
      Reclaim a word from the size of the work_struct by folding the pending bit and
the wq_data pointer together.  This shouldn't cause misalignment problems as
all pointers should be at least 4-byte aligned.
Signed-Off-By: NDavid Howells <dhowells@redhat.com>
      365970a1
    • D
      WorkStruct: Typedef the work function prototype · 6bb49e59
      由 David Howells 提交于 
      Define a type for the work function prototype.  It's not only kept in the
work_struct struct, it's also passed as an argument to several functions.

This makes it easier to change it.
Signed-Off-By: NDavid Howells <dhowells@redhat.com>
      6bb49e59
    • D
      WorkStruct: Separate delayable and non-delayable events. · 52bad64d
      由 David Howells 提交于 
      Separate delayable work items from non-delayable work items be splitting them
into a separate structure (delayed_work), which incorporates a work_struct and
the timer_list removed from work_struct.

The work_struct struct is huge, and this limits it's usefulness.  On a 64-bit
architecture it's nearly 100 bytes in size.  This reduces that by half for the
non-delayable type of event.
Signed-Off-By: NDavid Howells <dhowells@redhat.com>
      52bad64d
    • I
      [TG3]: Add missing unlock in tg3_open() error path. · 12862086
      由 Ira W. Snyder 提交于 
      Sparse noticed a locking imbalance in tg3_open(). This patch adds an
unlock to one of the error paths, so that tg3_open() always exits
without the lock held.
Signed-off-by: NIra W. Snyder <kernel@irasnyder.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      12862086
    • D
      [PATCH] Fix CPU_FREQ_GOV_ONDEMAND=y compile error · 6af6e1ef
      由 Dave Jones 提交于 
      The ONDEMAND governor needs FREQ_TABLE
Signed-off-by: NMattia Dongili <malattia@linux.it>
Signed-off-by: NDave Jones <davej@redhat.com>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
      6af6e1ef
  3. 21 11月, 2006 7 次提交
  5. 18 11月, 2006 1 次提交
    • L
      Revert "ACPI: created a dedicated workqueue for notify() execution" · b976fe19
      由 Linus Torvalds 提交于 
      This reverts commit 37605a69.

Again.

This same bug has now been introduced twice: it was done earlier by
commit b8d35192, only to be reverted
last time in commit 72945b2b.

We must NOT try to queue up notify handlers to another thread than the
normal ACPI execution thread, because the notifications on some systems
seem to just keep on accumulating until we run out of memory and/or
threads.

Keeping events within the one deferred execution thread automatically
throttles the events properly.

At least the Compaq N620c will lock up completely on the first thermal
event without this patch reverted.

Cc: David Brownell <david-b@pacbell.net>
Cc: Len Brown <len.brown@intel.com>
Cc: Alexey Starikovskiy <alexey.y.starikovskiy@linux.intel.com>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
      b976fe19
  7. 17 11月, 2006 26 次提交