From: Ulf Hansson <ulf.hansson@linaro.org> To: "Rafael J . Wysocki" <rafael@kernel.org>, linux-pm@vger.kernel.org Cc: "Rafael J . Wysocki" <rjw@rjwysocki.net>, Geert Uytterhoeven <geert+renesas@glider.be>, Maulik Shah <quic_mkshah@quicinc.com>, Gabriel Fernandez <gabriel.fernandez@foss.st.com>, Alexandre Torgue <alexandre.torgue@foss.st.com>, Dmitry Osipenko <digetx@gmail.com>, Kevin Hilman <khilman@kernel.org>, Ulf Hansson <ulf.hansson@linaro.org>, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH 13/14] PM: domains: Measure power-on/off latencies in genpd based on a governor Date: Wed, 11 May 2022 16:57:03 +0200 [thread overview] Message-ID: <20220511145704.698189-14-ulf.hansson@linaro.org> (raw) In-Reply-To: <20220511145704.698189-1-ulf.hansson@linaro.org> The measurements of the power-on|off latencies in genpd for a PM domain are superfluous, unless the corresponding genpd has a governor assigned to it, which would make use of the data. Therefore, let's improve the behaviour in genpd by making the measurements conditional, based upon if there's a governor assigned. Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> --- drivers/base/power/domain.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/base/power/domain.c b/drivers/base/power/domain.c index a7de5fb8f073..83b073cdd0ed 100644 --- a/drivers/base/power/domain.c +++ b/drivers/base/power/domain.c @@ -509,6 +509,7 @@ static int _genpd_power_on(struct generic_pm_domain *genpd, bool timed) if (!genpd->power_on) goto out; + timed = timed && genpd->gd; if (!timed) { ret = genpd->power_on(genpd); if (ret) @@ -527,8 +528,7 @@ static int _genpd_power_on(struct generic_pm_domain *genpd, bool timed) goto out; genpd->states[state_idx].power_on_latency_ns = elapsed_ns; - if (genpd->gd) - genpd->gd->max_off_time_changed = true; + genpd->gd->max_off_time_changed = true; pr_debug("%s: Power-%s latency exceeded, new value %lld ns\n", genpd->name, "on", elapsed_ns); @@ -559,6 +559,7 @@ static int _genpd_power_off(struct generic_pm_domain *genpd, bool timed) if (!genpd->power_off) goto out; + timed = timed && genpd->gd; if (!timed) { ret = genpd->power_off(genpd); if (ret) @@ -577,8 +578,7 @@ static int _genpd_power_off(struct generic_pm_domain *genpd, bool timed) goto out; genpd->states[state_idx].power_off_latency_ns = elapsed_ns; - if (genpd->gd) - genpd->gd->max_off_time_changed = true; + genpd->gd->max_off_time_changed = true; pr_debug("%s: Power-%s latency exceeded, new value %lld ns\n", genpd->name, "off", elapsed_ns); -- 2.25.1
WARNING: multiple messages have this Message-ID (diff)
From: Ulf Hansson <ulf.hansson@linaro.org> To: "Rafael J . Wysocki" <rafael@kernel.org>, linux-pm@vger.kernel.org Cc: "Rafael J . Wysocki" <rjw@rjwysocki.net>, Geert Uytterhoeven <geert+renesas@glider.be>, Maulik Shah <quic_mkshah@quicinc.com>, Gabriel Fernandez <gabriel.fernandez@foss.st.com>, Alexandre Torgue <alexandre.torgue@foss.st.com>, Dmitry Osipenko <digetx@gmail.com>, Kevin Hilman <khilman@kernel.org>, Ulf Hansson <ulf.hansson@linaro.org>, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH 13/14] PM: domains: Measure power-on/off latencies in genpd based on a governor Date: Wed, 11 May 2022 16:57:03 +0200 [thread overview] Message-ID: <20220511145704.698189-14-ulf.hansson@linaro.org> (raw) In-Reply-To: <20220511145704.698189-1-ulf.hansson@linaro.org> The measurements of the power-on|off latencies in genpd for a PM domain are superfluous, unless the corresponding genpd has a governor assigned to it, which would make use of the data. Therefore, let's improve the behaviour in genpd by making the measurements conditional, based upon if there's a governor assigned. Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> --- drivers/base/power/domain.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/base/power/domain.c b/drivers/base/power/domain.c index a7de5fb8f073..83b073cdd0ed 100644 --- a/drivers/base/power/domain.c +++ b/drivers/base/power/domain.c @@ -509,6 +509,7 @@ static int _genpd_power_on(struct generic_pm_domain *genpd, bool timed) if (!genpd->power_on) goto out; + timed = timed && genpd->gd; if (!timed) { ret = genpd->power_on(genpd); if (ret) @@ -527,8 +528,7 @@ static int _genpd_power_on(struct generic_pm_domain *genpd, bool timed) goto out; genpd->states[state_idx].power_on_latency_ns = elapsed_ns; - if (genpd->gd) - genpd->gd->max_off_time_changed = true; + genpd->gd->max_off_time_changed = true; pr_debug("%s: Power-%s latency exceeded, new value %lld ns\n", genpd->name, "on", elapsed_ns); @@ -559,6 +559,7 @@ static int _genpd_power_off(struct generic_pm_domain *genpd, bool timed) if (!genpd->power_off) goto out; + timed = timed && genpd->gd; if (!timed) { ret = genpd->power_off(genpd); if (ret) @@ -577,8 +578,7 @@ static int _genpd_power_off(struct generic_pm_domain *genpd, bool timed) goto out; genpd->states[state_idx].power_off_latency_ns = elapsed_ns; - if (genpd->gd) - genpd->gd->max_off_time_changed = true; + genpd->gd->max_off_time_changed = true; pr_debug("%s: Power-%s latency exceeded, new value %lld ns\n", genpd->name, "off", elapsed_ns); -- 2.25.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2022-05-11 14:59 UTC|newest] Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top 2022-05-11 14:56 [PATCH 00/14] PM: domains: Various improvements for genpd Ulf Hansson 2022-05-11 14:56 ` Ulf Hansson 2022-05-11 14:56 ` [PATCH 01/14] PM: domains: Add GENPD_FLAG_RPM_ALWAYS_ON for the always-on governor Ulf Hansson 2022-05-11 14:56 ` Ulf Hansson 2022-05-11 14:56 ` [PATCH 02/14] PM: domains: Drop redundant code for genpd " Ulf Hansson 2022-05-11 14:56 ` Ulf Hansson 2022-05-11 14:56 ` [PATCH 03/14] PM: domains: Don't check PM_QOS_FLAG_NO_POWER_OFF in genpd Ulf Hansson 2022-05-11 14:56 ` Ulf Hansson 2022-05-11 14:56 ` [PATCH 04/14] PM: domains: Rename irq_safe_dev_in_no_sleep_domain() " Ulf Hansson 2022-05-11 14:56 ` Ulf Hansson 2022-05-11 14:56 ` [PATCH 05/14] PM: domains: Skip another warning in irq_safe_dev_in_sleep_domain() Ulf Hansson 2022-05-11 14:56 ` Ulf Hansson 2022-05-11 14:56 ` [PATCH 06/14] PM: domains: Allocate gpd_timing_data dynamically based on governor Ulf Hansson 2022-05-11 14:56 ` Ulf Hansson 2022-05-11 14:56 ` [PATCH 07/14] PM: domains: Move the next_wakeup variable into the struct gpd_timing_data Ulf Hansson 2022-05-11 14:56 ` Ulf Hansson 2022-05-11 14:56 ` [PATCH 08/14] PM: domains: Measure suspend/resume latencies in genpd based on governor Ulf Hansson 2022-05-11 14:56 ` Ulf Hansson 2022-05-11 14:56 ` [PATCH 09/14] PM: domains: Fixup QoS latency measurements for IRQ safe devices in genpd Ulf Hansson 2022-05-11 14:56 ` Ulf Hansson 2022-05-11 14:57 ` [PATCH 10/14] PM: domains: Fix initialization of genpd's next_wakeup Ulf Hansson 2022-05-11 14:57 ` Ulf Hansson 2022-05-11 14:57 ` [PATCH 11/14] PM: domains: Clean up some code in pm_genpd_init() and genpd_remove() Ulf Hansson 2022-05-11 14:57 ` Ulf Hansson 2022-05-11 14:57 ` [PATCH 12/14] PM: domains: Allocate governor data dynamically based on a genpd governor Ulf Hansson 2022-05-11 14:57 ` Ulf Hansson 2022-05-11 14:57 ` Ulf Hansson [this message] 2022-05-11 14:57 ` [PATCH 13/14] PM: domains: Measure power-on/off latencies in genpd based on a governor Ulf Hansson 2022-05-11 14:57 ` [PATCH 14/14] PM: domains: Trust domain-idle-states from DT to be correct by genpd Ulf Hansson 2022-05-11 14:57 ` Ulf Hansson 2022-05-19 18:37 ` [PATCH 00/14] PM: domains: Various improvements for genpd Rafael J. Wysocki 2022-05-19 18:37 ` Rafael J. Wysocki
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