perf/x86-64: Use frame pointer to walk on irq and process stacks
authorFrederic Weisbecker <fweisbec@gmail.com>
Wed, 3 Mar 2010 06:38:37 +0000 (07:38 +0100)
committerFrederic Weisbecker <fweisbec@gmail.com>
Wed, 10 Mar 2010 13:26:40 +0000 (14:26 +0100)
commit61e67fb9d3ed13e6a7f58652ae4979b9c872fa57
treebccc09f36185b7aac11f11c64cff5d6f8b38cdae
parentdb2c4c7791cd04512093d05afc693c3511a65fd7
perf/x86-64: Use frame pointer to walk on irq and process stacks

We were using the frame pointer based stack walker on every
contexts in x86-32, but not in x86-64 where we only use the
seven-league boots on the exception stacks.

Use it also on irq and process stacks. This utterly accelerate
the captures.

Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
arch/x86/kernel/dumpstack_64.c