Commit Graph

3 Commits

Author SHA1 Message Date
Saravana Kannan
0ef21e1c1a ANDROID: vendor_hooks: Reduce pointless modversions CRC churn
When vendor hooks are added to a file that previously didn't have any
vendor hooks, we end up indirectly including linux/tracepoint.h.  This
causes some data types that used to be opaque (forward declared) to the
code to become visible to the code.

Modversions correctly catches this change in visibility, but we don't
really care about the data types made visible when linux/tracepoint.h is
included. So, hide this from modversions in the central vendor_hooks.h file
instead of having to fix this on a case by case basis.

This change itself will cause a one time CRC breakage/churn because it's
fixing the existing vendor hook headers, but should reduce unnecessary CRC
churns in the future.

To avoid future pointless CRC churn, vendor hook header files that include
vendor_hooks.h should not include linux/tracepoint.h directly.

Bug: 227513263
Bug: 226140073
Signed-off-by: Saravana Kannan <saravanak@google.com>
Change-Id: Ia88e6af11dd94fe475c464eb30a6e5e1e24c938b
2022-04-06 08:31:36 -07:00
Todd Kjos
9e0cf0e90d ANDROID: simplify vendor hook definitions
Remove macro versions of hooks that are no longer needed. The
macro versions are still needed when the _rcuidle version
of the hook is used (as in include/trace/hooks/debug.h).

Bug: 177416721
Signed-off-by: Todd Kjos <tkjos@google.com>
Change-Id: I4b50447e9a922ed038663d1459d7622dab30ffbb
2021-01-27 09:44:33 +00:00
Pavankumar Kondeti
2e14f01dc4 ANDROID: tracing: Add restricted vendor hooks for preemptirq events
We have debug infrastructure built on top of preempt/irq disable/enable
events. This requires modifications to the kernel tracing code. Since
this is not feasible with GKI, we started with registering to the
existing preemptirq trace events. However the performance of wide
variety of use cases are regressed as the rate of preemptirq events
is super high and generic trace events are slow.

Since GKI allows optimized trace events via restricted trace hooks,
add the same for preemptirq event.

Bug: 174541725
Change-Id: Ic8d3cdd1c1aa6a9267d0b755694fedffa2ea8e36
Signed-off-by: Pavankumar Kondeti <pkondeti@codeaurora.org>
2020-12-03 17:44:38 +00:00