perf/x86/intel/pt: Factor out pt_config_start()

PT trace is now enabled at the bottom of the event configuration
function that takes care of all configuration bits related to a given
event, including the address filter update. This is only needed where
the event configuration changes, that is, in ->add()/->start().

In the interrupt path we can use a lighter version that keeps the
configuration intact, since it hasn't changed, and only flips the
enable bit.

Signed-off-by: Alexander Shishkin <[email protected]>
Signed-off-by: Peter Zijlstra (Intel) <[email protected]>
Cc: Arnaldo Carvalho de Melo <[email protected]>
Cc: David Ahern <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Linus Torvalds <[email protected]>
Cc: Mark Rutland <[email protected]>
Cc: Namhyung Kim <[email protected]>
Cc: Stephane Eranian <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Cc: Vince Weaver <[email protected]>
Cc: [email protected]
Cc: [email protected]
Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Ingo Molnar <[email protected]>

0 files changed, 0 insertions, 0 deletions