perf c2c: Replace bitmap_weight() with bitmap_empty() where appropriate

Some code in builtin-c2c.c calls bitmap_weight() to check if any bit of
a given bitmap is set.

It's better to use bitmap_empty() in that case because bitmap_empty()
stops traversing the bitmap as soon as it finds first set bit, while
bitmap_weight() counts all bits unconditionally.

Signed-off-by: Yury Norov <[email protected]>
Cc: Alexander Shishkin <[email protected]>
Cc: Alexey Klimov <[email protected]>
Cc: Andrew Morton <[email protected]>
Cc: Andy Shevchenko <[email protected]>
Cc: David Laight <[email protected]>
Cc: Dennis Zhou <[email protected]>
Cc: Emil Renner Berthing <[email protected]>
Cc: Greg Kroah-Hartman <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Joe Perches <[email protected]>
Cc: Mark Rutland <[email protected]>
Cc: Matti Vaittinen <[email protected]>
Cc: Michał Mirosław <[email protected]>
Cc: Namhyung Kim <[email protected]>
Cc: Nicholas Piggin <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Rasmus Villemoes <[email protected]>
Link: http://lore.kernel.org/lkml/[email protected]
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>

0 files changed, 0 insertions, 0 deletions