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| author | Shaun Ruffell <sruffell@digium.com> | 2011-02-10 16:22:55 +0000 |
|---|---|---|
| committer | Shaun Ruffell <sruffell@digium.com> | 2011-02-10 16:22:55 +0000 |
| commit | 56fd3bd04747080f5998dbd3e6b60ef9c0ab08b9 (patch) | |
| tree | da1a2dfaae68be280186ce82f6ebe5125320a26b /drivers/dahdi/wct4xxp | |
| parent | 297c3d20046a3e52526934c8916a0d4e9289c906 (diff) | |
wct4xxp: Reduce stack usage in oct612x API.
Reduce the stack usage by replacing the mOCT6100_RETRIEVE_NLP_CONF_DWORD
and mOCT6100_SAVE_NLP_CONF_DWORD macros with functions. Some compilers
do a better job of optimizing the local variables declared in those
macros than others.
For example, with gcc 4.3.0, running
]# make stackcheck | grep Oct6100 | head -n 20 | sed -e 's/^0\S* //g' | uniq
Before:
Oct6100ApiWriteVqeNlpMemory [wct4xxp]: 1112
Oct6100ApiInvalidateChanPlayoutStructs [wct4xxp]:520
Oct6100ApiSetChannelLevelControl [wct4xxp]: 392
Oct6100ApiBridgeEventRemove [wct4xxp]: 344
Oct6100ApiDebugChannelOpen [wct4xxp]: 312
Oct6100ApiWriteVqeAfMemory [wct4xxp]: 296
Oct6100ApiSetChannelTailConfiguration [wct4xxp]:264
Oct6100ApiRandomMemoryWrite [wct4xxp]: 248
Oct6100ApiTransferToneEvents [wct4xxp]: 248
Oct6100ApiModifyChannelStructs [wct4xxp]: 232
After:
Oct6100ApiBridgeEventRemove [wct4xxp]: 344
Oct6100ApiDebugChannelOpen [wct4xxp]: 312
Oct6100ApiRandomMemoryWrite [wct4xxp]: 248
Oct6100ApiTransferToneEvents [wct4xxp]: 248
Oct6100ApiInvalidateChanPlayoutStructs [wct4xxp]:248
Oct6100ApiModifyChannelStructs [wct4xxp]: 232
Oct6100ApiBridgeRemoveParticipantFromChannel [wct4xxp]:216
Oct6100ApiWriteVqeNlpMemory [wct4xxp]: 200
Oct6100ApiInitChannels [wct4xxp]: 168
Oct6100ApiProgramNLP [wct4xxp]: 168
Signed-off-by: Shaun Ruffell <sruffell@digium.com>
git-svn-id: http://svn.asterisk.org/svn/dahdi/linux/trunk@9751 a0bf4364-ded3-4de4-8d8a-66a801d63aff
Diffstat (limited to 'drivers/dahdi/wct4xxp')
0 files changed, 0 insertions, 0 deletions