Re: [PATCH] more helpful WARN_ON and BUG_ON messages

From: Eric Sandeen
Date: Sun Oct 22 2006 - 23:19:12 EST


Jeremy Fitzhardinge wrote:

This seems like a generally useful idea - certainly more valuable than storing+printing the function name.

You might want to look at the BUG patches I wrote, which are currently in -mm. I added general machinery to allow architectures to easily implement BUG() efficiently (ie, with a minimal amount of BUG-related icache pollution). If you were to store the BUG_ON expression, it would be best to extend struct bug_entry and store it there - doing it in asm-generic BUG_ON() means you still end up with code to set up the printk in the mainline code path, and it also won't honour CONFIG_DEBUG_BUGVERBOSE being disabled.

Thanks, I missed that change... I'll look into it.

-Eric
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