On Sat, Mar 12, 2011 at 10:45:58PM +0000, Ben Hutchings wrote: > On Thu, 2011-03-03 at 20:34 -0800, Josh Triplett wrote: > > Package: linux-2.6 > > Version: 2.6.38~rc6-1~experimental.1 > > Severity: wishlist > > > > ~$ perf list | grep syscalls: > > raw_syscalls:sys_enter [Tracepoint event] > > raw_syscalls:sys_exit [Tracepoint event] > > > > Please consider enabling CONFIG_FTRACE_SYSCALLS, so perf can trace all > > syscalls by name and decode them. > > This adds about 100K to the size of the kernel. I question whether this > is worth the cost. Maybe for 64-bit architectures/flavours only?
I don't see anywhere near that amount of overhead. I just checked, and with current git master at least, CONFIG_FTRACE_SYSCALLS adds 30240 bytes to the size of bzImage. I'd certainly consider that worth the benefit of having more of the functionality of perf work out of the box. - Josh Triplett -- To UNSUBSCRIBE, email to debian-kernel-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/20110313003718.GA20845@feather
