From: Jason Andryuk <jandryuk@gmail.com>
To: xen-devel@lists.xenproject.org
Cc: Jason Andryuk <jandryuk@gmail.com>,
Ian Jackson <iwj@xenproject.org>, Wei Liu <wl@xen.org>
Subject: [PATCH 08/13] xenpm: Print HWP parameters
Date: Mon, 3 May 2021 15:28:05 -0400 [thread overview]
Message-ID: <20210503192810.36084-9-jandryuk@gmail.com> (raw)
In-Reply-To: <20210503192810.36084-1-jandryuk@gmail.com>
Print HWP-specific parameters. Some are always present, but others
depend on hardware support.
Signed-off-by: Jason Andryuk <jandryuk@gmail.com>
---
tools/misc/xenpm.c | 71 ++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 71 insertions(+)
diff --git a/tools/misc/xenpm.c b/tools/misc/xenpm.c
index 562bf939f9..9588dac991 100644
--- a/tools/misc/xenpm.c
+++ b/tools/misc/xenpm.c
@@ -708,6 +708,43 @@ void start_gather_func(int argc, char *argv[])
pause();
}
+static void calculate_hwp_activity_window(const xc_hwp_para_t *hwp,
+ unsigned int *activity_window,
+ const char **units)
+{
+ unsigned int mantissa = hwp->activity_window & 0x7f;
+ unsigned int exponent = ( hwp->activity_window >> 7 ) & 0x7;
+ unsigned int multiplier = 1;
+
+ if ( hwp->activity_window == 0 )
+ {
+ *units = "hardware selected";
+ *activity_window = 0;
+
+ return;
+ }
+
+ if ( exponent >= 6 )
+ {
+ *units = "s";
+ exponent -= 6;
+ }
+ else if ( exponent >= 3 )
+ {
+ *units = "ms";
+ exponent -= 3;
+ }
+ else
+ {
+ *units = "us";
+ }
+
+ for ( unsigned int i = 0; i < exponent; i++ )
+ multiplier *= 10;
+
+ *activity_window = mantissa * multiplier;
+}
+
/* print out parameters about cpu frequency */
static void print_cpufreq_para(int cpuid, struct xc_get_cpufreq_para *p_cpufreq)
{
@@ -777,6 +814,40 @@ static void print_cpufreq_para(int cpuid, struct xc_get_cpufreq_para *p_cpufreq)
p_cpufreq->scaling_cur_freq);
}
+ if ( strcmp(p_cpufreq->scaling_governor, "hwp-internal") == 0 )
+ {
+ const xc_hwp_para_t *hwp = &p_cpufreq->u.hwp_para;
+
+ printf("hwp variables :\n");
+ printf(" hardware limits : lowest [%u] most_efficient [%u]\n",
+ hwp->hw_lowest, hwp->hw_most_efficient);
+ printf(" hardware limits : guaranteed [%u] highest [%u]\n",
+ hwp->hw_guaranteed, hwp->hw_highest);
+ printf(" configured limits : min [%u] max [%u] energy_perf [%u]\n",
+ hwp->minimum, hwp->maximum, hwp->energy_perf);
+
+ if ( hwp->hw_feature & XEN_SYSCTL_HWP_FEAT_ENERGY_PERF )
+ {
+ printf(" configured limits : energy_perf [%u%s]\n",
+ hwp->energy_perf,
+ hwp->energy_perf ? "" : " hw autonomous");
+ }
+
+ if ( hwp->hw_feature & XEN_SYSCTL_HWP_FEAT_ACT_WINDOW )
+ {
+ unsigned int activity_window;
+ const char *units;
+
+ calculate_hwp_activity_window(hwp, &activity_window, &units);
+ printf(" configured limits : activity_window [%u %s]\n",
+ activity_window, units);
+ }
+
+ printf(" configured limits : desired [%u%s]\n",
+ hwp->desired,
+ hwp->desired ? "" : " hw autonomous");
+ }
+
printf("turbo mode : %s\n",
p_cpufreq->turbo_enabled ? "enabled" : "disabled or n/a");
printf("\n");
--
2.30.2
next prev parent reply other threads:[~2021-05-03 19:29 UTC|newest]
Thread overview: 44+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-05-03 19:27 [PATCH 00/13] Intel Hardware P-States (HWP) support Jason Andryuk
2021-05-03 19:27 ` [PATCH 01/13] cpufreq: Allow restricting to internal governors only Jason Andryuk
2021-05-26 13:18 ` Jan Beulich
2021-05-26 14:12 ` Jason Andryuk
2021-05-26 15:09 ` Jan Beulich
2021-05-26 16:44 ` Jason Andryuk
2021-05-03 19:27 ` [PATCH 02/13] cpufreq: Add perf_freq to cpuinfo Jason Andryuk
2021-05-26 13:24 ` Jan Beulich
2021-05-26 14:19 ` Jason Andryuk
2021-05-03 19:28 ` [PATCH 03/13] cpufreq: Export intel_feature_detect Jason Andryuk
2021-05-26 13:27 ` Jan Beulich
2021-05-26 14:44 ` Jason Andryuk
2021-05-26 15:11 ` Jan Beulich
2021-05-03 19:28 ` [PATCH 04/13] cpufreq: Add Hardware P-State (HWP) driver Jason Andryuk
2021-05-26 14:59 ` Jan Beulich
2021-05-27 7:23 ` Jan Beulich
2021-05-27 18:50 ` Jason Andryuk
2021-05-28 6:35 ` Jan Beulich
2021-06-03 11:55 ` Jason Andryuk
2021-06-04 6:39 ` Jan Beulich
2021-05-27 7:45 ` Jan Beulich
2021-05-03 19:28 ` [PATCH 05/13] xenpm: Change get-cpufreq-para output for internal Jason Andryuk
2021-05-26 15:21 ` Jan Beulich
2021-05-27 5:54 ` Jan Beulich
2021-05-03 19:28 ` [PATCH 06/13] cpufreq: Export HWP parameters to userspace Jason Andryuk
2021-05-27 7:55 ` Jan Beulich
2021-05-28 13:19 ` Jason Andryuk
2021-05-28 13:39 ` Jan Beulich
2021-05-03 19:28 ` [PATCH 07/13] libxc: Include hwp_para in definitions Jason Andryuk
2021-05-03 19:28 ` Jason Andryuk [this message]
2021-05-27 8:02 ` [PATCH 08/13] xenpm: Print HWP parameters Jan Beulich
2021-05-03 19:28 ` [PATCH 09/13] xen: Add SET_CPUFREQ_HWP xen_sysctl_pm_op Jason Andryuk
2021-05-27 8:33 ` Jan Beulich
2021-05-03 19:28 ` [PATCH 10/13] libxc: Add xc_set_cpufreq_hwp Jason Andryuk
2021-05-04 8:03 ` Jan Beulich
2021-05-04 11:31 ` Jason Andryuk
2021-05-27 9:45 ` Jan Beulich
2021-05-03 19:28 ` [PATCH 11/13] xenpm: Factor out a non-fatal cpuid_parse variant Jason Andryuk
2021-05-27 8:41 ` Jan Beulich
2021-05-03 19:28 ` [PATCH 12/13] xenpm: Add set-cpufreq-hwp subcommand Jason Andryuk
2021-05-27 9:46 ` Jan Beulich
2021-05-03 19:28 ` [PATCH 13/13] CHANGELOG: Add Intel HWP entry Jason Andryuk
2021-05-27 9:48 ` Jan Beulich
2021-05-20 14:57 ` [PATCH 00/13] Intel Hardware P-States (HWP) support Jan Beulich
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