Apple

Dear Janaki,

Hope you are using IOLog for printing.

IOLog() is not synchronous normally, which means it is possible to miss log messages in the case of a kernel panic. However, setting the kIOLogSynchronous bit (0x00200000) in the io boot-time argument makes the console output synchronous. The file iokit/IOKit/IOKitDebug.h enumerates several other bits that can be set in the io argument to enable specific types of I/O Kit log messages.

Rohit

On 8/23/07, JanakiRam < email@hidden> wrote:

Hi ALL,

         I'm newbie to this kernel prorgamming. Please clarify my following query.

         I'm using printf for logging messages from my kext. One observation is all my logs are not getting printed when i start my kext using kextload. Its not consitent , how many logs are going to get printed every time i load the kext.

         Please help me to solve this. Thanks in Advance.

-JanakiRam.

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References:
	>printf logs are not getting printed properly on system.log (From: JanakiRam <email@hidden>)
	>Re: printf logs are not getting printed properly on system.log (From: Rodney <email@hidden>)