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| author | Andy Shevchenko <andriy.shevchenko@linux.intel.com> | 2020-04-15 19:00:44 +0200 |
|---|---|---|
| committer | Petr Mladek <pmladek@suse.com> | 2020-05-20 14:54:18 +0200 |
| commit | 7daac5b2fdf88e3c3e84cf0d577f524beb0244ab (patch) | |
| tree | a7e917835198b50771bbdc8a31418696316c4798 /Documentation/core-api | |
| parent | Linux 5.7-rc1 (diff) | |
| download | linux-7daac5b2fdf88e3c3e84cf0d577f524beb0244ab.tar.xz linux-7daac5b2fdf88e3c3e84cf0d577f524beb0244ab.zip | |
lib/vsprintf: Print time64_t in human readable format
There are users which print time and date represented by content of
time64_t type in human readable format.
Instead of open coding that each time introduce %ptT[dt][r] specifier.
Few test cases for %ptT specifier has been added as well.
Link: https://lore.kernel.org/r/20200415170046.33374-2-andriy.shevchenko@linux.intel.com
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Acked-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Rewieved-by: Petr Mladek <pmladek@suse.com>
Signed-off-by: Petr Mladek <pmladek@suse.com>
Diffstat (limited to 'Documentation/core-api')
| -rw-r--r-- | Documentation/core-api/printk-formats.rst | 22 |
1 files changed, 12 insertions, 10 deletions
diff --git a/Documentation/core-api/printk-formats.rst b/Documentation/core-api/printk-formats.rst index 8ebe46b1af39..a407cdd09083 100644 --- a/Documentation/core-api/printk-formats.rst +++ b/Documentation/core-api/printk-formats.rst @@ -468,21 +468,23 @@ Examples (OF):: %pfwf /ocp@68000000/i2c@48072000/camera@10/port/endpoint - Full name %pfwP endpoint - Node name -Time and date (struct rtc_time) -------------------------------- +Time and date +------------- :: - %ptR YYYY-mm-ddTHH:MM:SS - %ptRd YYYY-mm-dd - %ptRt HH:MM:SS - %ptR[dt][r] + %pt[RT] YYYY-mm-ddTHH:MM:SS + %pt[RT]d YYYY-mm-dd + %pt[RT]t HH:MM:SS + %pt[RT][dt][r] -For printing date and time as represented by struct rtc_time structure in -human readable format. +For printing date and time as represented by + R struct rtc_time structure + T time64_t type +in human readable format. -By default year will be incremented by 1900 and month by 1. Use %ptRr (raw) -to suppress this behaviour. +By default year will be incremented by 1900 and month by 1. +Use %pt[RT]r (raw) to suppress this behaviour. Passed by reference. |