perf annotate: Print a sorted summary of annotated overhead lines
It's can be very annoying to scroll down perf annotated output until we find relevant overhead. Using the -l option, you can now have a small summary sorted per overhead in the beginning of the output. Example: ./perf annotate -l -k ../../vmlinux -s __lock_acquire Sorted summary for file ../../vmlinux ---------------------------------------------- 12.04 /home/fweisbec/linux/linux-2.6-tip/kernel/lockdep.c:1653 4.61 /home/fweisbec/linux/linux-2.6-tip/kernel/lockdep.c:1740 3.77 /home/fweisbec/linux/linux-2.6-tip/kernel/lockdep.c:1775 3.56 /home/fweisbec/linux/linux-2.6-tip/kernel/lockdep.c:1653 2.93 /home/fweisbec/linux/linux-2.6-tip/arch/x86/include/asm/irqflags.h:15 2.83 /home/fweisbec/linux/linux-2.6-tip/kernel/lockdep.c:2545 2.30 /home/fweisbec/linux/linux-2.6-tip/kernel/lockdep.c:2594 2.20 /home/fweisbec/linux/linux-2.6-tip/kernel/lockdep.c:2388 2.20 /home/fweisbec/linux/linux-2.6-tip/kernel/lockdep.c:730 2.09 /home/fweisbec/linux/linux-2.6-tip/kernel/lockdep.c:730 2.09 /home/fweisbec/linux/linux-2.6-tip/kernel/lockdep.c:138 1.88 /home/fweisbec/linux/linux-2.6-tip/kernel/lockdep.c:2548 1.47 /home/fweisbec/linux/linux-2.6-tip/arch/x86/include/asm/irqflags.h:15 1.36 /home/fweisbec/linux/linux-2.6-tip/kernel/lockdep.c:2594 1.36 /home/fweisbec/linux/linux-2.6-tip/kernel/lockdep.c:730 1.26 /home/fweisbec/linux/linux-2.6-tip/kernel/lockdep.c:1654 1.26 /home/fweisbec/linux/linux-2.6-tip/kernel/lockdep.c:1653 1.15 /home/fweisbec/linux/linux-2.6-tip/kernel/lockdep.c:2592 1.15 /home/fweisbec/linux/linux-2.6-tip/kernel/lockdep.c:1740 1.15 /home/fweisbec/linux/linux-2.6-tip/kernel/lockdep.c:1740 [...] Only overhead over 0.5% are summarized. Signed-off-by: NFrederic Weisbecker <fweisbec@gmail.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> LKML-Reference: <1244844682-12928-2-git-send-email-fweisbec@gmail.com> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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