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| author | Chen Yu <yu.c.chen@intel.com> | 2020-10-23 13:02:54 +0200 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2020-11-10 19:41:40 +0100 |
| commit | f39ee99f5118a71ea162f8f66d743a8c4c401540 (patch) | |
| tree | d8de873a129ad95d33f7f449703bbc24aee7b5f6 | |
| parent | Linux 5.10-rc3 (diff) | |
| download | linux-f39ee99f5118a71ea162f8f66d743a8c4c401540.tar.xz linux-f39ee99f5118a71ea162f8f66d743a8c4c401540.zip | |
PM: sleep: Print driver flags for all devices during suspend/resume
Currently there are 4 driver flags to control system suspend/resume
behavior: DPM_FLAG_NO_DIRECT_COMPLETE, DPM_FLAG_SMART_PREPARE,
DPM_FLAG_SMART_SUSPEND and DPM_FLAG_MAY_SKIP_RESUME.
Print these flags during suspend/resume so as to get a brief
understanding of the expected behavior of each device, and to
facilitate suspend/resume debugging/tuning.
To enable this tracing:
echo 'file drivers/base/power/main.c +p' >
/sys/kernel/debug/dynamic_debug/control
Signed-off-by: Chen Yu <yu.c.chen@intel.com>
[ rjw: Subject and changelog edits ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
| -rw-r--r-- | drivers/base/power/main.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/base/power/main.c b/drivers/base/power/main.c index c7ac49042cee..2b4255dc101e 100644 --- a/drivers/base/power/main.c +++ b/drivers/base/power/main.c @@ -441,9 +441,9 @@ static pm_callback_t pm_noirq_op(const struct dev_pm_ops *ops, pm_message_t stat static void pm_dev_dbg(struct device *dev, pm_message_t state, const char *info) { - dev_dbg(dev, "%s%s%s\n", info, pm_verb(state.event), + dev_dbg(dev, "%s%s%s driver flags: %x\n", info, pm_verb(state.event), ((state.event & PM_EVENT_SLEEP) && device_may_wakeup(dev)) ? - ", may wakeup" : ""); + ", may wakeup" : "", dev->power.driver_flags); } static void pm_dev_err(struct device *dev, pm_message_t state, const char *info, |