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| author | Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> | 2016-11-22 01:33:20 +0100 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2016-11-22 02:31:49 +0100 |
| commit | d5dd33d9de0d50db7f3ba221f9c4e4f74e61a69d (patch) | |
| tree | e7c131c80841832c05f352d66a6321b521ba425c /crypto/aead.c | |
| parent | cpufreq: intel_pstate: round up min_perf limits (diff) | |
| download | linux-d5dd33d9de0d50db7f3ba221f9c4e4f74e61a69d.tar.xz linux-d5dd33d9de0d50db7f3ba221f9c4e4f74e61a69d.zip | |
cpufreq: intel_pstate: increase precision of performance limits
Even with round up of limits->min_perf and limits->max_perf, in some
cases resultant performance is 100 MHz less than the desired.
For example when the maximum frequency is 3.50 GHz, setting
scaling_min_frequency to 2.3 GHz always results in 2.2 GHz minimum.
Currently the fixed floating point operation uses 8 bit precision for
calculating limits->min_perf and limits->max_perf. For some operations
in this driver the 14 bit precision is used. Using the 14 bit precision
also for calculating limits->min_perf and limits->max_perf, addresses
this issue.
Introduced fp_ext_toint() equivalent to fp_toint() and int_ext_tofp()
equivalent to int_tofp() with 14 bit precision.
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'crypto/aead.c')
0 files changed, 0 insertions, 0 deletions