Yinghai Lu wrote:
On 10/6/07, Jeff Garzik <[email protected]> wrote:
commit a606d2a111cdf948da5d69eb1de5526c5c2dafef
Author: Jeff Garzik <[email protected]>
Date: Fri Oct 5 22:56:05 2007 -0400
[netdrvr] forcedeth: interrupt handling cleanup
* nv_nic_irq_optimized() and nv_nic_irq_other() were complete duplicates
of nv_nic_irq(), with the exception of one function call. Consolidate
all three into a single interrupt handler, deleting a lot of redundant
code.
* greatly simplify irq handler locking.
Prior to this change, the irq handler(s) would acquire and release
np->lock for each action (RX, TX, other events).
For the common case -- RX or TX work -- the lock is always acquired,
making all successive acquire/release combinations largely redundant.
Acquire the lock at the beginning of the irq handler, and release it at
the end of the irq handler. This is simple, easy, and obvious.
* remove irq handler work loop.
All interesting events emanating from the irq handler either have
their own work loops, or they poke a timer into action.
Therefore, delete the pointless master interrupt handler work loop.
Signed-off-by: Jeff Garzik <[email protected]>
drivers/net/forcedeth.c | 325 +++++++++++-------------------------------------
1 file changed, 77 insertions(+), 248 deletions(-)
any chance to create three verion irq handlers for ioapic, msi, msi-x...?
MACRO or inline function?
MSI-X already has its own separate interrupt handlers. MSI and INTx
call the same interrupt handling code, like the unmodified driver goes.
Creating an MSI-specific irq handler would not save very much AFAICS,
but I might be missing something.
Do you have ideas/suggestions for a different method?
Jeff
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
[Index of Archives]
[Kernel Newbies]
[Netfilter]
[Bugtraq]
[Photo]
[Stuff]
[Gimp]
[Yosemite News]
[MIPS Linux]
[ARM Linux]
[Linux Security]
[Linux RAID]
[Video 4 Linux]
[Linux for the blind]
[Linux Resources]
