From: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
To: andriy.shevchenko@intel.com
Cc: prarit@redhat.com, platform-driver-x86@vger.kernel.org,
linux-kernel@vger.kernel.org,
Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Subject: [RESEND][PATCH 04/10] tools/power/x86/intel-speed-select: Refuse to disable core-power when getting used
Date: Thu, 10 Oct 2019 13:29:39 -0700 [thread overview]
Message-ID: <20191010202945.73616-5-srinivas.pandruvada@linux.intel.com> (raw)
In-Reply-To: <20191010202945.73616-1-srinivas.pandruvada@linux.intel.com>
The turbo-freq feature is dependent on the core-power feature. If the
core-power feature is disabled while the turbo-freq feature is enabled,
this will break the turbo-freq feature. This is a firmware limitation,
where they can't return error under this scenario.
So when trying to disable core-power, make sure that the turbo-freq
feature is not enabled. If it enabled, return error if user is trying to
disable the core-power feature.
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
---
.../power/x86/intel-speed-select/isst-core.c | 21 +++++++++++++++++++
1 file changed, 21 insertions(+)
diff --git a/tools/power/x86/intel-speed-select/isst-core.c b/tools/power/x86/intel-speed-select/isst-core.c
index 6dee5332c9d3..67d32f2b9bea 100644
--- a/tools/power/x86/intel-speed-select/isst-core.c
+++ b/tools/power/x86/intel-speed-select/isst-core.c
@@ -649,6 +649,27 @@ int isst_pm_qos_config(int cpu, int enable_clos, int priority_type)
unsigned int req, resp;
int ret;
+ if (!enable_clos) {
+ struct isst_pkg_ctdp pkg_dev;
+ struct isst_pkg_ctdp_level_info ctdp_level;
+
+ ret = isst_get_ctdp_levels(cpu, &pkg_dev);
+ if (ret) {
+ debug_printf("isst_get_ctdp_levels\n");
+ return ret;
+ }
+
+ ret = isst_get_ctdp_control(cpu, pkg_dev.current_level,
+ &ctdp_level);
+ if (ret)
+ return ret;
+
+ if (ctdp_level.fact_enabled) {
+ debug_printf("Turbo-freq feature must be disabled first\n");
+ return -EINVAL;
+ }
+ }
+
ret = isst_send_mbox_command(cpu, CONFIG_CLOS, CLOS_PM_QOS_CONFIG, 0, 0,
&resp);
if (ret)
--
2.17.2
next prev parent reply other threads:[~2019-10-10 20:30 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-10-10 20:29 [RESEND][PATCH 00/10] intel-speed-select tool updates targetted for 5.5 Srinivas Pandruvada
2019-10-10 20:29 ` [RESEND][PATCH 01/10] tools/power/x86/intel-speed-select: Remove warning for unused result Srinivas Pandruvada
2019-10-10 20:29 ` [RESEND][PATCH 02/10] tools/power/x86/intel-speed-select: Base-freq feature auto mode Srinivas Pandruvada
2019-10-10 20:29 ` [RESEND][PATCH 03/10] tools/power/x86/intel-speed-select: Turbo-freq " Srinivas Pandruvada
2019-10-10 20:29 ` Srinivas Pandruvada [this message]
2019-10-10 20:29 ` [RESEND][PATCH 05/10] tools/power/x86/intel-speed-select: Add int argument to command functions Srinivas Pandruvada
2019-10-10 20:29 ` [RESEND][PATCH 06/10] tools/power/x86/intel-speed-select: Make process_command generic Srinivas Pandruvada
2019-10-10 20:29 ` [RESEND][PATCH 07/10] tools/power/x86/intel-speed-select: Add check for CascadeLake-N models Srinivas Pandruvada
2019-10-10 20:29 ` [RESEND][PATCH 08/10] tools/power/x86/intel-speed-select: Implement CascadeLake-N help and command functions structures Srinivas Pandruvada
2019-10-10 20:29 ` [RESEND][PATCH 09/10] tools/power/x86/intel-speed-select: Implement 'perf-profile info' on CascadeLake-N Srinivas Pandruvada
2019-10-10 20:29 ` [RESEND][PATCH 10/10] tools/power/x86/intel-speed-select: Implement base-freq commands " Srinivas Pandruvada
2019-11-05 18:21 ` [RESEND][PATCH 00/10] intel-speed-select tool updates targetted for 5.5 Prarit Bhargava
2019-11-05 19:21 ` Srinivas Pandruvada
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