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| author | Tom Huynh <tom.huynh@freescale.com> | 2015-01-22 22:29:36 (GMT) |
|---|---|---|
| committer | Honghua Yin <Hong-Hua.Yin@freescale.com> | 2015-03-16 08:28:49 (GMT) |
| commit | a82bc85b91aabe41b47eb7ef4b15c466f671ecbc (patch) | |
| tree | f59b8596d188480dfba921dc598a4cbebd06fd94 /drivers/staging/fsl_dpa_offload/dpa_ipsec.c | |
| parent | 64ded519fc23ff43dc257dce37dfd1b7801f1e99 (diff) | |
| download | linux-fsl-qoriq-a82bc85b91aabe41b47eb7ef4b15c466f671ecbc.tar.xz | |
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.
Change-Id: I5ba1acaec8436973970d00fdbd4b100107559a32
Reviewed-on: http://git.am.freescale.net:8181/29119
Tested-by: Review Code-CDREVIEW <CDREVIEW@freescale.com>
Reviewed-by: Honghua Yin <Hong-Hua.Yin@freescale.com>
Diffstat (limited to 'drivers/staging/fsl_dpa_offload/dpa_ipsec.c')
0 files changed, 0 insertions, 0 deletions