From: "Rafael J. Wysocki" <rjw@rjwysocki.net>
To: Linux PM <linux-pm@vger.kernel.org>
Cc: LKML <linux-kernel@vger.kernel.org>,
Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Subject: [PATCH] cpufreq: intel_pstate: Do not expose PID parameters in passive mode
Date: Sat, 24 Dec 2016 00:29:56 +0100 [thread overview]
Message-ID: <5932094.TdNu43FsQu@aspire.rjw.lan> (raw)
From: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
If intel_pstate works in the passive mode in which it acts as
a regular cpufreq driver and collaborates with generic cpufreq
governors, the PID parameters are not used, so do not expose
them via debugfs in that case.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
---
drivers/cpufreq/intel_pstate.c | 9 ++++-----
1 file changed, 4 insertions(+), 5 deletions(-)
Index: linux-pm/drivers/cpufreq/intel_pstate.c
===================================================================
--- linux-pm.orig/drivers/cpufreq/intel_pstate.c
+++ linux-pm/drivers/cpufreq/intel_pstate.c
@@ -1018,10 +1018,6 @@ static void __init intel_pstate_debug_ex
struct dentry *debugfs_parent;
int i = 0;
- if (hwp_active ||
- pstate_funcs.get_target_pstate == get_target_pstate_use_cpu_load)
- return;
-
debugfs_parent = debugfs_create_dir("pstate_snb", NULL);
if (IS_ERR_OR_NULL(debugfs_parent))
return;
@@ -2487,7 +2483,10 @@ hwp_cpu_matched:
if (rc)
goto out;
- intel_pstate_debug_expose_params();
+ if (intel_pstate_driver == &intel_pstate && !hwp_active &&
+ pstate_funcs.get_target_pstate != get_target_pstate_use_cpu_load)
+ intel_pstate_debug_expose_params();
+
intel_pstate_sysfs_expose_params();
if (hwp_active)
reply other threads:[~2016-12-23 23:33 UTC|newest]
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