[PATCH 2/3] intel_pstate: allow driver to be built as a module

From: Ethan Zhao
Date: Tue Nov 18 2014 - 03:38:22 EST


From: Brian Maly <brian.maly@xxxxxxxxxx>

To provide the flexibility of module, allow this driver to
be configured and built as a module.

Signed-off-by: Brian Maly <brian.maly@xxxxxxxxxx>
Signed-off-by: Ethan Zhao <ethan.zhao@xxxxxxxxxx>
---
drivers/cpufreq/Kconfig.x86 | 2 +-
drivers/cpufreq/intel_pstate.c | 6 ++++++
2 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/drivers/cpufreq/Kconfig.x86 b/drivers/cpufreq/Kconfig.x86
index 89ae88f..94c9e6b 100644
--- a/drivers/cpufreq/Kconfig.x86
+++ b/drivers/cpufreq/Kconfig.x86
@@ -3,7 +3,7 @@
#

config X86_INTEL_PSTATE
- bool "Intel P state control"
+ tristate "Intel P state control"
depends on X86
help
This driver provides a P state for Intel core processors.
diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c
index 5498eb0..7c5faea 100644
--- a/drivers/cpufreq/intel_pstate.c
+++ b/drivers/cpufreq/intel_pstate.c
@@ -590,7 +590,9 @@ static void intel_pstate_set_pstate(struct cpudata *cpu, int pstate)
if (pstate == cpu->pstate.current_pstate)
return;

+#ifndef MODULE
trace_cpu_frequency(pstate * cpu->pstate.scaling, cpu->cpu);
+#endif

cpu->pstate.current_pstate = pstate;

@@ -705,12 +707,14 @@ static void intel_pstate_timer_func(unsigned long __data)

intel_pstate_adjust_busy_pstate(cpu);

+#ifndef MODULE
trace_pstate_sample(fp_toint(sample->core_pct_busy),
fp_toint(intel_pstate_get_scaled_busy(cpu)),
cpu->pstate.current_pstate,
sample->mperf,
sample->aperf,
sample->freq);
+#endif

intel_pstate_set_sample_time(cpu);
}
@@ -1054,6 +1058,7 @@ out:
}
device_initcall(intel_pstate_init);

+#ifndef MODULE
static int __init intel_pstate_setup(char *str)
{
if (!str)
@@ -1064,6 +1069,7 @@ static int __init intel_pstate_setup(char *str)
return 0;
}
early_param("intel_pstate", intel_pstate_setup);
+#endif

MODULE_AUTHOR("Dirk Brandewie <dirk.j.brandewie@xxxxxxxxx>");
MODULE_DESCRIPTION("'intel_pstate' - P state driver Intel Core processors");
--
1.8.3.1

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