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authorHidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>2006-09-26 18:27:56 -0400
committerTony Luck <tony.luck@intel.com>2006-09-26 18:27:56 -0400
commitddb4f0df0424d174567a011a176782ffa4202071 (patch)
tree81eeb2f18b3a4a295c87673493c2b113c6cf9393 /crypto/cipher.c
parentb29e7132b5a9f2496beed37beef7ba4d010afb2c (diff)
[IA64] CMC/CPE: Reverse the order of fetching log and checking poll threshold
This patch reverses the order of fetching log from SAL and checking poll threshold. This will fix following trivial issues: - If SAL_GET_SATE_INFO is unbelievably slow (due to huge system or just its silly implementation) and if it takes more than 1/5 sec, CMCI/CPEI will never switch to CMCP/CPEP. - Assuming terrible flood of interrupt (continuous corrected errors let all CPUs enter to handler at once and bind them in it), CPUs will be serialized by IA64_LOG_LOCK(*). Now we check the poll threshold after the lock and log fetch, so we need to call SAL_GET_STATE_INFO (num_online_cpus() + 4) times in the worst case. if we can check the threshold before the lock, we can shut up interrupts quickly without waiting preceding log fetches, and the number of times will be reduced to (num_online_cpus()) in the same situation. Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
Diffstat (limited to 'crypto/cipher.c')
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