oprofile: port to the new ring buffer
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- v1 Latest9 patches 10 repliesIn review
Patches in v1 No applies recorded yet
| # | Subject and files | Size | Replies | Applied |
|---|---|---|---|---|
| 1/9 | oprofile: adding cpu buffer r/w access functionsdrivers/ drivers/ drivers/ | +22 | 0 replies | |
| 2/9 | oprofile: adding cpu_buffer_write_commit()drivers/ drivers/ | +18 | 0 replies | |
| 3/9 | oprofile: adding cpu_buffer_entries()drivers/ drivers/ | +29 | 0 replies | |
| 4/9 | oprofile: moving cpu_buffer_reset() to cpu_buffer.hdrivers/ drivers/ drivers/ | +14 | 0 replies | |
| 5/9 | ring_buffer: add remaining cpu functions to ring_buffer.hinclude/ | +2 | 1 reply | |
| 6/9 | oprofile: port to the new ring_bufferdrivers/ drivers/ drivers/ | +114 | 4 replies | |
| 7/9 | oprofile: remove nr_available_slots()drivers/ | +0 | 0 replies | |
| 8/9 | oprofile: fix lost sample counterdrivers/ | +53 | 0 replies | |
| 9/9 | ring_buffer: adding EXPORT_SYMBOLskernel/ | +34 | 0 replies |
Reviews trailers per patch
1 of 9 patches has a Reviewed-by or Acked-by.
| Patch | Steven Rostedt |
|---|---|
| 1/9 | |
| 2/9 | |
| 3/9 | |
| 4/9 | |
| 5/9 | A-b |
| 6/9 | |
| 7/9 | |
| 8/9 | |
| 9/9 |
Trailers given in replies are filled; those carried in the patches from earlier versions are outlined with dashes.
Cover letter [PATCH 0/9] oprofile: port to the new ring buffer
This patch set ports cpu buffers in oprofile to the new ring buffer provided by the tracing framework. The motivation here is to leave the pain of implementing ring buffers to others. Oh, no, there are more advantages. Main reason is the support of different sample sizes that could be stored in the buffer. Use cases for this are IBS and Cell spu profiling. Using the new ring buffer ensures valid and complete samples and allows copying the cpu buffer stateless without knowing its content. Second it will use generic kernel API and also reduce code size. And hopefully, there are less bugs.
The patch set is also available here:
git://git.kernel.org/pub/scm/linux/kernel/git/rric/oprofile.git ring_buffer
-Robert