last_kmsg is a dump of the printk statements from the kernel before the operating system itself crashed. Tombstones are miniature core dumps generated by the operating system when a userspace Android application crashes.
I suggest you look into the panic() function in an LXR for the second question. Alex On Jul 13, 2011, at 3:34 AM, claire wrote: > hello i'm writing this letter because i have some questions about > kernel log. > > 1. The difference between last_kmsg and tombstones? > > i heard last_kmsg is created by kernel panic but i also heard > tombstones is created in same case. > but when kernel panic happened, i just only got last_kmsg ... > > so i wanna know how and when can i get that files and what is the > difference of meaning between last_kmsg and tombstones? > > 2. how to create last_kmsg? > > when the phone is terminated(or reboot) because of kernel panic, > maybe a certain flag is changed. > when the flag is 1(or 0), it creates last_kmsg file. (it's just my > guess) > > what i wonder is how can the phone knows whether the kernel panic is > happened or unhappened. > and where (which file) can i see that codes? > - when kernel boots, check something in ram_console.c but i can't > understand > so please explain process of creating last_kmsg > > thank you for your reading ^^ > > -- > unsubscribe: android-kernel+unsubscr...@googlegroups.com > website: http://groups.google.com/group/android-kernel -- unsubscribe: android-kernel+unsubscr...@googlegroups.com website: http://groups.google.com/group/android-kernel
