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| author |   Tom Huynh <tom.huynh@freescale.com> | 2015-01-20 16:19:50 -0600 |
|---|---|---|
| committer |   Scott Wood <scottwood@freescale.com> | 2015-01-29 20:05:56 -0600 |
| commit | d2caa3cebda8b626336e100b80a0ed6f909dccab (patch) | |
| tree | 1f72536b25f7bcaa9e891a85891f9a060bcdaeb1 /tools/perf/scripts/python/call-graph-from-postgresql.py | |
| parent | powerpc: Remove duplicate tlbcam_index declarations (diff) | |
| download | wireguard-linux-d2caa3cebda8b626336e100b80a0ed6f909dccab.tar.xz wireguard-linux-d2caa3cebda8b626336e100b80a0ed6f909dccab.zip | |
powerpc/perf: fix fsl_emb_pmu_start to write correct pmc value
PMCs on PowerPC increases towards 0x80000000 and triggers an overflow
interrupt when the msb is set to collect a sample. Therefore, to setup
for the next sample collection, pmu_start should set the pmc value to
0x80000000 - left instead of left which incorrectly delays the next
overflow interrupt. Same as commit 9a45a9407c69 ("powerpc/perf:
power_pmu_start restores incorrect values, breaking frequency events")
for book3s.
Signed-off-by: Tom Huynh <tom.huynh@freescale.com>
Signed-off-by: Scott Wood <scottwood@freescale.com>
Diffstat (limited to 'tools/perf/scripts/python/call-graph-from-postgresql.py')
0 files changed, 0 insertions, 0 deletions