diff options
| author | Anshuman Khandual <[email protected]> | 2013-04-22 19:42:41 +0000 |
|---|---|---|
| committer | Benjamin Herrenschmidt <[email protected]> | 2013-04-26 16:11:11 +1000 |
| commit | 73760931dcbcbe29eab72e06577a77c64f16fd02 (patch) | |
| tree | 37507048630e438266e49b9c3ef332911e21b847 /lib | |
| parent | 95213959aefc94f1cfe6718449a8bcdc8df86060 (diff) | |
powerpc/perf: Add basic assembly code to read BHRB entries on POWER8
This patch adds the basic assembly code to read BHRB buffer. BHRB entries
are valid only after a PMU interrupt has happened (when MMCR0[PMAO]=1)
and BHRB has been freezed. BHRB read should not be attempted when it is
still enabled (MMCR0[PMAE]=1) and getting updated, as this can produce
non-deterministic results.
Signed-off-by: Anshuman Khandual <[email protected]>
Signed-off-by: Benjamin Herrenschmidt <[email protected]>
Diffstat (limited to 'lib')
0 files changed, 0 insertions, 0 deletions