| commit | cea96c38af5017f6b13bfdc13c50bdde55d7c380 | [log] [tgz] |
|---|---|---|
| author | Song Liu <[email protected]> | Tue Oct 02 05:36:36 2018 |
| committer | Roy Yang <[email protected]> | Fri Feb 28 15:16:45 2020 |
| tree | f90116128c03550419cb3072ba0a63956994c058 | |
| parent | f1a496728983c085cea93ecf5fa2e7dd8ab14249 [diff] |
trace_uprobe: support reference counter in fd-based uprobe This patch enables uprobes with reference counter in fd-based uprobe. Highest 32 bits of perf_event_attr.config is used to stored offset of the reference count (semaphore). Format information in /sys/bus/event_source/devices/uprobe/format/ is updated to reflect this new feature. Link: http://lkml.kernel.org/r/[email protected] Cc: Oleg Nesterov <[email protected]> Acked-by: Peter Zijlstra (Intel) <[email protected]> Reviewed-and-tested-by: Ravi Bangoria <[email protected]> Signed-off-by: Song Liu <[email protected]> Signed-off-by: Steven Rostedt (VMware) <[email protected]> (cherry picked from commit a6ca88b241d5e929e6e60b12ad8cd288f0ffa256) Signed-off-by: Roy Yang <[email protected]> BUG=b:126232850 TEST=Build, manual SOURCE=UPSTREAM(a6ca88b241d5e929e6e60b12ad8cd288f0ffa256) Change-Id: I8f189d0b28e9c6f32703180bc35b4155630e5c79 Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/lakitu-kernel/+/2045032 Commit-Queue: Roy Yang <[email protected]> Tested-by: Roy Yang <[email protected]> Reviewed-by: Vaibhav Rustagi <[email protected]>