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| author | Alexander Duyck <alexander.h.duyck@intel.com> | 2013-01-26 02:08:14 +0000 |
|---|---|---|
| committer | Jeff Kirsher <jeffrey.t.kirsher@intel.com> | 2013-02-15 23:59:32 -0800 |
| commit | 990a3158002ff19b2d665334bc7a21a8887a123d (patch) | |
| tree | 46f0b8155e6032cd410b0dda690f0490c4c08279 /tools/perf/scripts/python/event_analyzing_sample.py | |
| parent | 67da097e1295071da700862e7faa8a294b182b42 (diff) | |
ixgbe: Update DESC_NEEDED define to adjust for changes to MAX_SKB_FRAGS
Recent changes have made it so that MAX_SKB_FRAGS is now never less than 16.
As a result we were seeing issues on systems with 64K pages as it would
cause DESC_NEEDED to increase to 68, and we would need over 136 descriptors
free before clean_tx_irq would wake the queue.
This patch makes it so that DESC_NEEDED is always MAX_SKB_FRAGS + 4. This
should prevent any possible deadlocks on the systems with 64K pages as we will
now only require 42 descriptors to wake.
Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Tested-by: Phil Schmitt <phillip.j.schmitt@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Diffstat (limited to 'tools/perf/scripts/python/event_analyzing_sample.py')
0 files changed, 0 insertions, 0 deletions