Searched hist:d2caa3ce (Results 1 – 1 of 1) sorted by relevance
| /openbmc/linux/arch/powerpc/perf/ |
| H A D | core-fsl-emb.c | d2caa3ce Tue Jan 20 16:19:50 CST 2015 Tom Huynh <tom.huynh@freescale.com> 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>
d2caa3ce Tue Jan 20 16:19:50 CST 2015 Tom Huynh <tom.huynh@freescale.com> 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>
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