| commit | 61e67fb9d3ed13e6a7f58652ae4979b9c872fa57 | |
| author | Frederic Weisbecker <fweisbec@gmail.com> | |
| Wed, 3 Mar 2010 06:38:37 +0000 (3 07:38 +0100) | ||
| committer | Frederic Weisbecker <fweisbec@gmail.com> | |
| Wed, 10 Mar 2010 13:26:40 +0000 (10 14:26 +0100) | ||
| tree | bccc09f36185b7aac11f11c64cff5d6f8b38cdae | treesnapshot (tar.gz zip) |
| parent | db2c4c7791cd04512093d05afc693c3511a65fd7 | commitdiff |
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>
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 | diffblobblamehistory |