From: Lina Iyer <lina.iyer@linaro.org> To: ulf.hansson@linaro.org, khilman@linaro.org, linux-pm@vger.kernel.org, linux-arm-kernel@lists.infradead.org Cc: geert@linux-m68k.org, k.kozlowski@samsung.com, msivasub@codeaurora.org, agross@codeaurora.org, sboyd@codeaurora.org, linux-arm-msm@vger.kernel.org, lorenzo.pieralisi@arm.com, ahaslam@baylibre.com, mtitinger@baylibre.com Subject: [PATCH RFC 06/27] PM / Domains: add debugfs 'states' and 'timings' seq files Date: Tue, 17 Nov 2015 15:37:30 -0700 [thread overview] Message-ID: <1447799871-56374-7-git-send-email-lina.iyer@linaro.org> (raw) In-Reply-To: <1447799871-56374-1-git-send-email-lina.iyer@linaro.org> From: Marc Titinger <mtitinger@baylibre.com> This purpose of these debug seq-files is to help investigate generic power domain state transitions, based on device constraints. requires the "multiple states" patches from Axel Haslam. also rename 'summary' from 'pm_genpd_summary' sample output for 'states' ========================== Domain State name Eval = 2200nter + Exit = Min_off_on (ns) ----------------------------------------------------------------------- a53_pd cluster-sleep-0 1500000+800000=2300000 a57_pd d1-retention 1000000+800000=1800000 a57_pd cluster-sleep-0 1500000+800000=2300000 sample output for 'timings' =========================== Domain Devices, Timings in ns Stop/Start Save/Restore, Effective ---------------------------------------------------- --- a53_pd /cpus/cpu@100 1060 /660 1580 /1940 ,0 (cached stop) /cpus/cpu@101 1060 /740 1520 /1600 ,0 (cached stop) /cpus/cpu@102 880 /620 1380 /1780 ,0 (cached stop) /cpus/cpu@103 1080 /640 1340 /1600 ,0 (cached stop) a57_pd /cpus/cpu@0 1160 /740 3280 /1800 ,0 (cached stop) /cpus/cpu@1 780 /1400 1440 /2080 ,0 (cached stop) /D1 600 /540 7140 /6420 ,2199460 (cached stop) Signed-off-by: Marc Titinger <mtitinger@baylibre.com> --- drivers/base/power/domain.c | 115 +++++++++++++++++++++++++++++++++++++++++--- 1 file changed, 107 insertions(+), 8 deletions(-) diff --git a/drivers/base/power/domain.c b/drivers/base/power/domain.c index c300293..9a0df09 100644 --- a/drivers/base/power/domain.c +++ b/drivers/base/power/domain.c @@ -2169,21 +2169,120 @@ static const struct file_operations pm_genpd_summary_fops = { .release = single_release, }; +static int pm_genpd_states_show(struct seq_file *s, void *data) +{ + struct generic_pm_domain *genpd; + + seq_puts(s, + "\n Domain State name Enter + Exit = Min_off_on (ns)\n"); + seq_puts(s, + "-----------------------------------------------------------------------\n"); + + list_for_each_entry(genpd, &gpd_list, gpd_list_node) { + + int i; + + for (i = 0; i < genpd->state_count; i++) { + seq_printf(s, "%-20s %-20s %lld+%lld=%lld\n", + genpd->name, + genpd->states[i].name, + genpd->states[i].power_on_latency_ns, + genpd->states[i].power_off_latency_ns, + genpd->states[i].power_off_latency_ns + + genpd->states[i].power_on_latency_ns); + } + + } + + seq_puts(s, "\n"); + + return 0; +} + +static int pm_genpd_states_open(struct inode *inode, struct file *file) +{ + return single_open(file, pm_genpd_states_show, NULL); +} + +static const struct file_operations pm_genpd_states_fops = { + .open = pm_genpd_states_open, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, +}; + +static int pm_genpd_timing_show(struct seq_file *s, void *data) +{ + struct generic_pm_domain *genpd; + + seq_puts(s, "\n Domain Devices, Timings in ns\n"); + seq_puts(s, + " Stop/Start Save/Restore, Effective\n"); + seq_puts(s, + "---------------------------------------------------- ---\n"); + + list_for_each_entry(genpd, &gpd_list, gpd_list_node) { + struct pm_domain_data *pm_data; + + seq_printf(s, "%-30s", genpd->name); + + list_for_each_entry(pm_data, &genpd->dev_list, list_node) { + struct gpd_timing_data *td = &to_gpd_data(pm_data)->td; + + if (!pm_data->dev->of_node) + continue; + + seq_printf(s, + "\n %-20s %-6lld/%-6lld %-6lld/%-6lld,%lld %s%s", + pm_data->dev->of_node->full_name, + td->stop_latency_ns, td->start_latency_ns, + td->save_state_latency_ns, + td->restore_state_latency_ns, + td->effective_constraint_ns, + td->cached_stop_ok ? "(cached stop) " : "", + td->constraint_changed ? "(changed)" : ""); + } + seq_puts(s, "\n"); + } + return 0; +} + +static int pm_genpd_timing_open(struct inode *inode, struct file *file) +{ + return single_open(file, pm_genpd_timing_show, NULL); +} + +static const struct file_operations pm_genpd_timing_fops = { + .open = pm_genpd_timing_open, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, +}; + static int __init pm_genpd_debug_init(void) { - struct dentry *d; + struct dentry *d = NULL; pm_genpd_debugfs_dir = debugfs_create_dir("pm_genpd", NULL); - if (!pm_genpd_debugfs_dir) - return -ENOMEM; + if (pm_genpd_debugfs_dir) + d = debugfs_create_file("summary", S_IRUGO, + pm_genpd_debugfs_dir, NULL, + &pm_genpd_summary_fops); + if (d) + d = debugfs_create_file("states", S_IRUGO, + pm_genpd_debugfs_dir, NULL, + &pm_genpd_states_fops); + if (d) + d = debugfs_create_file("timings", S_IRUGO, + pm_genpd_debugfs_dir, NULL, + &pm_genpd_timing_fops); + if (d) + return 0; - d = debugfs_create_file("pm_genpd_summary", S_IRUGO, - pm_genpd_debugfs_dir, NULL, &pm_genpd_summary_fops); - if (!d) - return -ENOMEM; + debugfs_remove_recursive(pm_genpd_debugfs_dir /*can be null*/); - return 0; + return -ENOMEM; } late_initcall(pm_genpd_debug_init); -- 2.1.4
WARNING: multiple messages have this Message-ID (diff)
From: lina.iyer@linaro.org (Lina Iyer) To: linux-arm-kernel@lists.infradead.org Subject: [PATCH RFC 06/27] PM / Domains: add debugfs 'states' and 'timings' seq files Date: Tue, 17 Nov 2015 15:37:30 -0700 [thread overview] Message-ID: <1447799871-56374-7-git-send-email-lina.iyer@linaro.org> (raw) In-Reply-To: <1447799871-56374-1-git-send-email-lina.iyer@linaro.org> From: Marc Titinger <mtitinger@baylibre.com> This purpose of these debug seq-files is to help investigate generic power domain state transitions, based on device constraints. requires the "multiple states" patches from Axel Haslam. also rename 'summary' from 'pm_genpd_summary' sample output for 'states' ========================== Domain State name Eval = 2200nter + Exit = Min_off_on (ns) ----------------------------------------------------------------------- a53_pd cluster-sleep-0 1500000+800000=2300000 a57_pd d1-retention 1000000+800000=1800000 a57_pd cluster-sleep-0 1500000+800000=2300000 sample output for 'timings' =========================== Domain Devices, Timings in ns Stop/Start Save/Restore, Effective ---------------------------------------------------- --- a53_pd /cpus/cpu at 100 1060 /660 1580 /1940 ,0 (cached stop) /cpus/cpu at 101 1060 /740 1520 /1600 ,0 (cached stop) /cpus/cpu at 102 880 /620 1380 /1780 ,0 (cached stop) /cpus/cpu at 103 1080 /640 1340 /1600 ,0 (cached stop) a57_pd /cpus/cpu at 0 1160 /740 3280 /1800 ,0 (cached stop) /cpus/cpu at 1 780 /1400 1440 /2080 ,0 (cached stop) /D1 600 /540 7140 /6420 ,2199460 (cached stop) Signed-off-by: Marc Titinger <mtitinger@baylibre.com> --- drivers/base/power/domain.c | 115 +++++++++++++++++++++++++++++++++++++++++--- 1 file changed, 107 insertions(+), 8 deletions(-) diff --git a/drivers/base/power/domain.c b/drivers/base/power/domain.c index c300293..9a0df09 100644 --- a/drivers/base/power/domain.c +++ b/drivers/base/power/domain.c @@ -2169,21 +2169,120 @@ static const struct file_operations pm_genpd_summary_fops = { .release = single_release, }; +static int pm_genpd_states_show(struct seq_file *s, void *data) +{ + struct generic_pm_domain *genpd; + + seq_puts(s, + "\n Domain State name Enter + Exit = Min_off_on (ns)\n"); + seq_puts(s, + "-----------------------------------------------------------------------\n"); + + list_for_each_entry(genpd, &gpd_list, gpd_list_node) { + + int i; + + for (i = 0; i < genpd->state_count; i++) { + seq_printf(s, "%-20s %-20s %lld+%lld=%lld\n", + genpd->name, + genpd->states[i].name, + genpd->states[i].power_on_latency_ns, + genpd->states[i].power_off_latency_ns, + genpd->states[i].power_off_latency_ns + + genpd->states[i].power_on_latency_ns); + } + + } + + seq_puts(s, "\n"); + + return 0; +} + +static int pm_genpd_states_open(struct inode *inode, struct file *file) +{ + return single_open(file, pm_genpd_states_show, NULL); +} + +static const struct file_operations pm_genpd_states_fops = { + .open = pm_genpd_states_open, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, +}; + +static int pm_genpd_timing_show(struct seq_file *s, void *data) +{ + struct generic_pm_domain *genpd; + + seq_puts(s, "\n Domain Devices, Timings in ns\n"); + seq_puts(s, + " Stop/Start Save/Restore, Effective\n"); + seq_puts(s, + "---------------------------------------------------- ---\n"); + + list_for_each_entry(genpd, &gpd_list, gpd_list_node) { + struct pm_domain_data *pm_data; + + seq_printf(s, "%-30s", genpd->name); + + list_for_each_entry(pm_data, &genpd->dev_list, list_node) { + struct gpd_timing_data *td = &to_gpd_data(pm_data)->td; + + if (!pm_data->dev->of_node) + continue; + + seq_printf(s, + "\n %-20s %-6lld/%-6lld %-6lld/%-6lld,%lld %s%s", + pm_data->dev->of_node->full_name, + td->stop_latency_ns, td->start_latency_ns, + td->save_state_latency_ns, + td->restore_state_latency_ns, + td->effective_constraint_ns, + td->cached_stop_ok ? "(cached stop) " : "", + td->constraint_changed ? "(changed)" : ""); + } + seq_puts(s, "\n"); + } + return 0; +} + +static int pm_genpd_timing_open(struct inode *inode, struct file *file) +{ + return single_open(file, pm_genpd_timing_show, NULL); +} + +static const struct file_operations pm_genpd_timing_fops = { + .open = pm_genpd_timing_open, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, +}; + static int __init pm_genpd_debug_init(void) { - struct dentry *d; + struct dentry *d = NULL; pm_genpd_debugfs_dir = debugfs_create_dir("pm_genpd", NULL); - if (!pm_genpd_debugfs_dir) - return -ENOMEM; + if (pm_genpd_debugfs_dir) + d = debugfs_create_file("summary", S_IRUGO, + pm_genpd_debugfs_dir, NULL, + &pm_genpd_summary_fops); + if (d) + d = debugfs_create_file("states", S_IRUGO, + pm_genpd_debugfs_dir, NULL, + &pm_genpd_states_fops); + if (d) + d = debugfs_create_file("timings", S_IRUGO, + pm_genpd_debugfs_dir, NULL, + &pm_genpd_timing_fops); + if (d) + return 0; - d = debugfs_create_file("pm_genpd_summary", S_IRUGO, - pm_genpd_debugfs_dir, NULL, &pm_genpd_summary_fops); - if (!d) - return -ENOMEM; + debugfs_remove_recursive(pm_genpd_debugfs_dir /*can be null*/); - return 0; + return -ENOMEM; } late_initcall(pm_genpd_debug_init); -- 2.1.4
next prev parent reply other threads:[~2015-11-17 22:37 UTC|newest] Thread overview: 166+ messages / expand[flat|nested] mbox.gz Atom feed top 2015-11-17 22:37 [PATCH RFC 00/27] PM/Domains: Cluster idle support for ARM SoCs Lina Iyer 2015-11-17 22:37 ` Lina Iyer 2015-11-17 22:37 ` [PATCH RFC 01/27] PM / Domains: core changes for multiple states Lina Iyer 2015-11-17 22:37 ` Lina Iyer 2015-12-09 13:58 ` Ulf Hansson 2015-12-09 13:58 ` Ulf Hansson 2015-12-17 17:58 ` Axel Haslam 2015-12-17 17:58 ` Axel Haslam 2015-12-17 21:19 ` Ulf Hansson 2015-12-17 21:19 ` Ulf Hansson 2015-11-17 22:37 ` [PATCH RFC 02/27] PM / Domains: Allow domain power states to be read from DT Lina Iyer 2015-11-17 22:37 ` Lina Iyer 2015-12-10 16:53 ` Ulf Hansson 2015-12-10 16:53 ` Ulf Hansson 2015-12-15 10:07 ` Marc Titinger 2015-12-15 10:07 ` Marc Titinger 2015-12-15 22:14 ` Lina Iyer 2015-12-15 22:14 ` Lina Iyer 2015-12-16 21:36 ` Lina Iyer 2015-12-16 21:36 ` Lina Iyer 2015-11-17 22:37 ` [PATCH RFC 03/27] PM / Domain: Add additional state specific param Lina Iyer 2015-11-17 22:37 ` Lina Iyer 2015-11-19 21:33 ` Kevin Hilman 2015-11-19 21:33 ` Kevin Hilman 2015-11-17 22:37 ` [PATCH RFC 04/27] PM / Domains: make governor select deepest state Lina Iyer 2015-11-17 22:37 ` Lina Iyer 2015-12-11 9:13 ` Ulf Hansson 2015-12-11 9:13 ` Ulf Hansson 2015-11-17 22:37 ` [PATCH RFC 05/27] PM / Domains: remove old power on/off latencies Lina Iyer 2015-11-17 22:37 ` Lina Iyer 2015-11-18 14:57 ` [PATCH] ARM: imx6: pm: declare pm domain latency on power_state struct Lina Iyer 2015-11-18 14:57 ` Lina Iyer 2015-11-23 13:31 ` Lucas Stach 2015-11-23 13:31 ` Lucas Stach 2015-11-23 13:42 ` Lucas Stach 2015-11-23 13:42 ` Lucas Stach 2015-12-04 23:19 ` Lina Iyer 2015-12-04 23:19 ` Lina Iyer 2015-12-11 9:16 ` [PATCH RFC 05/27] PM / Domains: remove old power on/off latencies Ulf Hansson 2015-12-11 9:16 ` Ulf Hansson 2015-11-17 22:37 ` Lina Iyer [this message] 2015-11-17 22:37 ` [PATCH RFC 06/27] PM / Domains: add debugfs 'states' and 'timings' seq files Lina Iyer 2015-12-11 11:46 ` Ulf Hansson 2015-12-11 11:46 ` Ulf Hansson 2015-12-16 11:07 ` Marc Titinger 2015-12-16 11:07 ` Marc Titinger 2015-12-16 12:48 ` Ulf Hansson 2015-12-16 12:48 ` Ulf Hansson 2015-12-16 14:12 ` Marc Titinger 2015-12-16 14:12 ` Marc Titinger 2015-11-17 22:37 ` [PATCH RFC 07/27] PM / Domains: Read domain residency from DT Lina Iyer 2015-11-17 22:37 ` Lina Iyer 2015-11-24 20:41 ` Stephen Boyd 2015-11-24 20:41 ` Stephen Boyd 2015-12-11 11:54 ` Ulf Hansson 2015-12-11 11:54 ` Ulf Hansson 2015-11-17 22:37 ` [PATCH RFC 08/27] PM / Domains: Support IRQ safe PM domains Lina Iyer 2015-11-17 22:37 ` Lina Iyer 2016-01-14 14:42 ` Ulf Hansson 2016-01-14 14:42 ` Ulf Hansson 2016-01-14 18:33 ` Lina Iyer 2016-01-14 18:33 ` Lina Iyer 2016-01-15 8:55 ` Ulf Hansson 2016-01-15 8:55 ` Ulf Hansson 2016-01-15 16:57 ` Lina Iyer 2016-01-15 16:57 ` Lina Iyer 2016-01-15 22:08 ` Ulf Hansson 2016-01-15 22:08 ` Ulf Hansson 2016-01-18 16:58 ` Lina Iyer 2016-01-18 16:58 ` Lina Iyer 2016-01-18 17:00 ` Lina Iyer 2016-01-18 17:00 ` Lina Iyer 2016-01-19 10:01 ` Ulf Hansson 2016-01-19 10:01 ` Ulf Hansson 2015-11-17 22:37 ` [PATCH RFC 09/27] PM / Domains: Attempt runtime suspend of IRQ safe parent domain Lina Iyer 2015-11-17 22:37 ` Lina Iyer 2015-11-17 22:37 ` [PATCH RFC 10/27] drivers: power: Introduce PM domains for CPUs/clusters Lina Iyer 2015-11-17 22:37 ` Lina Iyer 2015-11-24 20:52 ` Stephen Boyd 2015-11-24 20:52 ` Stephen Boyd 2015-11-17 22:37 ` [PATCH RFC 11/27] drivers: cpu: Define CPU devices as IRQ safe Lina Iyer 2015-11-17 22:37 ` Lina Iyer 2015-11-17 22:37 ` [PATCH RFC 12/27] ARM: cpuidle: remove cpu parameter from the cpuidle_ops suspend hook Lina Iyer 2015-11-17 22:37 ` Lina Iyer 2015-11-17 22:37 ` [PATCH RFC 13/27] ARM: cpuidle: Add runtime PM support for CPU idle Lina Iyer 2015-11-17 22:37 ` Lina Iyer 2015-11-18 8:50 ` Zhaoyang Huang 2015-11-18 8:50 ` Zhaoyang Huang 2015-11-18 14:17 ` Lina Iyer 2015-11-18 14:17 ` Lina Iyer 2015-11-19 22:10 ` Kevin Hilman 2015-11-19 22:10 ` Kevin Hilman 2015-11-17 22:37 ` [PATCH RFC 14/27] tick: get next wakeup event for the CPU Lina Iyer 2015-11-17 22:37 ` Lina Iyer 2015-11-17 22:37 ` [PATCH RFC 15/27] PM / Domains: Add next_wakeup to device's timing data Lina Iyer 2015-11-17 22:37 ` Lina Iyer 2015-11-19 22:19 ` Kevin Hilman 2015-11-19 22:19 ` Kevin Hilman 2015-11-20 15:58 ` Lina Iyer 2015-11-20 15:58 ` Lina Iyer 2015-11-17 22:37 ` [PATCH RFC 16/27] ARM: cpuidle: Record the next wakeup event of the CPU Lina Iyer 2015-11-17 22:37 ` Lina Iyer 2015-11-19 23:35 ` Kevin Hilman 2015-11-19 23:35 ` Kevin Hilman 2015-11-20 16:28 ` Lina Iyer 2015-11-20 16:28 ` Lina Iyer 2015-11-24 18:29 ` Kevin Hilman 2015-11-24 18:29 ` Kevin Hilman 2015-11-17 22:37 ` [PATCH RFC 17/27] drivers: cpu-pd: Record CPUs that are part of the domain Lina Iyer 2015-11-17 22:37 ` Lina Iyer 2015-11-24 21:00 ` Stephen Boyd 2015-11-24 21:00 ` Stephen Boyd 2015-11-25 14:13 ` Lina Iyer 2015-11-25 14:13 ` Lina Iyer 2015-11-25 19:12 ` Stephen Boyd 2015-11-25 19:12 ` Stephen Boyd 2015-11-25 20:20 ` Lina Iyer 2015-11-25 20:20 ` Lina Iyer 2015-11-17 22:37 ` [PATCH RFC 18/27] drivers: cpu-pd: Add PM Domain governor for CPUs Lina Iyer 2015-11-17 22:37 ` Lina Iyer 2015-11-18 18:42 ` Lorenzo Pieralisi 2015-11-18 18:42 ` Lorenzo Pieralisi 2015-11-19 8:50 ` Marc Titinger 2015-11-19 8:50 ` Marc Titinger 2015-11-20 17:39 ` Lina Iyer 2015-11-20 17:39 ` Lina Iyer 2015-11-19 23:52 ` Kevin Hilman 2015-11-19 23:52 ` Kevin Hilman 2015-11-20 16:21 ` Lorenzo Pieralisi 2015-11-20 16:21 ` Lorenzo Pieralisi 2015-11-20 16:42 ` Lina Iyer 2015-11-20 16:42 ` Lina Iyer 2015-11-20 0:03 ` Kevin Hilman 2015-11-20 0:03 ` Kevin Hilman 2015-11-17 22:37 ` [PATCH RFC 19/27] drivers: cpu-pd: Invoke CPU PM runtime on hotplug Lina Iyer 2015-11-17 22:37 ` Lina Iyer 2015-11-17 22:37 ` [PATCH RFC 20/27] Documentation: ARM: topology: 'cluster' property for cluster nodes Lina Iyer 2015-11-17 22:37 ` Lina Iyer 2015-11-17 22:37 ` [PATCH RFC 21/27] drivers: cpu-pd: Parse topology to setup CPU PM domains Lina Iyer 2015-11-17 22:37 ` Lina Iyer 2015-12-07 14:54 ` Lorenzo Pieralisi 2015-12-07 14:54 ` Lorenzo Pieralisi 2015-12-08 18:05 ` Lina Iyer 2015-12-08 18:05 ` Lina Iyer 2015-12-10 18:11 ` Lorenzo Pieralisi 2015-12-10 18:11 ` Lorenzo Pieralisi 2015-12-11 9:04 ` Geert Uytterhoeven 2015-12-11 9:04 ` Geert Uytterhoeven 2015-12-11 20:51 ` Lina Iyer 2015-12-11 20:51 ` Lina Iyer 2015-11-17 22:37 ` [PATCH RFC 22/27] drivers: firmware: PSCI: Export psci_has_ext_power_state() Lina Iyer 2015-11-17 22:37 ` Lina Iyer 2015-11-17 22:37 ` [PATCH RFC 23/27] ARM64: psci: Support cluster idle states for OS-Initated Lina Iyer 2015-11-17 22:37 ` Lina Iyer 2015-11-17 22:37 ` [PATCH RFC 24/27] arm64: dts: Add Qualcomm MSM8916, MTP8916, APQ8016, SBC8016 ids Lina Iyer 2015-11-17 22:37 ` Lina Iyer 2015-11-17 22:37 ` [PATCH RFC 25/27] devicetree: bindings: Document qcom,msm-id and qcom,board-id Lina Iyer 2015-11-17 22:37 ` [PATCH RFC 25/27] devicetree: bindings: Document qcom, msm-id and qcom, board-id Lina Iyer 2015-11-19 14:36 ` [PATCH RFC 25/27] devicetree: bindings: Document qcom,msm-id and qcom,board-id Rob Herring 2015-11-19 14:36 ` [PATCH RFC 25/27] devicetree: bindings: Document qcom, msm-id and qcom, board-id Rob Herring 2015-11-19 15:36 ` [PATCH RFC 25/27] devicetree: bindings: Document qcom,msm-id and qcom,board-id Lina Iyer 2015-11-19 15:36 ` [PATCH RFC 25/27] devicetree: bindings: Document qcom, msm-id " Lina Iyer 2015-11-17 22:37 ` [PATCH RFC 26/27] ARM64: dts: Add PSCI cpuidle support for MSM8916 Lina Iyer 2015-11-17 22:37 ` Lina Iyer 2015-11-17 22:37 ` [PATCH RFC 27/27] ARM64: dts: Define CPU power domain " Lina Iyer 2015-11-17 22:37 ` Lina Iyer
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