perf/x86/intel/lbr: Mark the {rd,wr}lbr_{to,from} wrappers __always_inline

Browse source

The {rd,wr}lbr_{to,from} wrappers are invoked in hot paths, e.g. context
switch and NMI handler. They should be always inline to achieve better
performance. However, the CONFIG_OPTIMIZE_INLINING allows the compiler
to uninline functions marked 'inline'.

Mark the {rd,wr}lbr_{to,from} wrappers as __always_inline to force
inline the wrappers.

Suggested-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Kan Liang <kan.liang@linux.intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/1593780569-62993-12-git-send-email-kan.liang@linux.intel.com

...

This commit is contained in:

Kan Liang 2020-07-03 05:49:17 -07:00 • committed by Peter Zijlstra

parent 5624986dc6

commit 020d91e5f3

1 changed files with 4 additions and 4 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

8

arch/x86/events/intel/lbr.c

View file