Thanks, Len. I need the ACPI_FUNCTION_TRACE output , otherwise I will write printk() for look into the kernel acpi load process and debug my BIOS acpi part. I have tried the 2.6.22 and .2.6.24 kernel. Unfuntunely, after setting the acpi.debug_level and acpi.debug_layer to 0xFFFFFFFF and give the enough log_buf_len. Still there is no ACPI_FUNCTION_TRACE out. I'll try the 2.6.27 kernel and report the result. Thanks, Frank -----Original Message----- From: Len Brown [mailto:lenb@xxxxxxxxxx] Sent: Wednesday, October 22, 2008 12:18 PM To: Huang, FrankR Cc: Lin Ming; devel@xxxxxxxxxxxxxxxx Subject: RE: [Devel] RE: Welcome to the "Devel" mailing list wrong list for this (linux specific) discussion, it should be on linux-acpi@xxxxxxxxxxxxxxx function tracing is not a new feature, it should work in 2.6.22 as well. the new part was splitting it out into its own config option -- it used to be enabled under CONFIG_ACPI_DEBUG=y. maybe we screwed it up when we split it out and didn't notice b/c it isn't used often. If 2.6.27 doesn't work, please report it to the list above. thanks, -Len On Tue, 21 Oct 2008, Huang, FrankR wrote: > I use 2.6.24 kernel and have this option to Y. But still there is no ACPI_FUNCTION_TRACE output. > > -----Original Message----- > From: Lin Ming [mailto:lin@xxxxxxxxx] > Sent: Tuesday, October 21, 2008 4:11 PM > To: Huang, FrankR > Cc: devel@xxxxxxxxxxxxxxxx > Subject: Re: [Devel] RE: Welcome to the "Devel" mailing list > > You also have to config CONFIG_ACPI_DEBUG_FUNC_TRACE=y. > > Lin Ming > -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
