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Add preference option to set CPU DMA Latency

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Robin Gareus 2021-06-10 04:29:43 +02:00
parent 8c0ef7bd62
commit 88e85fcd17
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1 changed files with 38 additions and 0 deletions
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38
gtk2_ardour/rc_option_editor.cc
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@ -4366,6 +4366,44 @@ These settings will only take effect after %1 is restarted.\n\
add_option (_("Performance"), procs); add_option (_("Performance"), procs);
} }
#if !(defined PLATFORM_WINDOWS || defined __APPLE__)
if (Glib::file_test ("/dev/cpu_dma_latency", Glib::FILE_TEST_EXISTS)) {
ComboOption<int32_t>* cpudma = new ComboOption<int32_t> (
"cpu-dma-latency",
_("Power Management, CPU DMA latency:"),
sigc::mem_fun (*_rc_config, &RCConfiguration::get_cpu_dma_latency),
sigc::mem_fun (*_rc_config, &RCConfiguration::set_cpu_dma_latency)
);
cpudma->add (-1, _("Unset"));
cpudma->add (0, _("Lowest (prevent CPU sleep states)"));
cpudma->add (5, _("5 usec"));
cpudma->add (55, _("55 usec"));
cpudma->add (100, _("100 usec"));
int32_t cpudma_val = _rc_config->get_cpu_dma_latency ();
switch (cpudma_val) {
case -1:
case 0:
case 5:
case 55:
case 100:
break;
default:
if (cpudma_val > 0) {
cpudma->add (cpudma_val, string_compose (_("%1 usec"), cpudma_val));
}
}
cpudma->set_note (string_compose (_("This setting requires write access to `/dev/cpu_dma_latency' to set the maximum tolerable CPU DMA, and will only take effect when %1 is restarted.\n"), PROGRAM_NAME));
add_option (_("Performance"), cpudma);
}
#endif
add_option (_("Performance"), new OptionEditorHeading (_("CPU/FPU Denormals"))); add_option (_("Performance"), new OptionEditorHeading (_("CPU/FPU Denormals")));
add_option (_("Performance"), add_option (_("Performance"),