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authorAndy Shevchenko <andriy.shevchenko@linux.intel.com>2018-12-05 00:23:11 +0300
committerAlexandre Belloni <alexandre.belloni@bootlin.com>2018-12-11 00:39:34 +0300
commit4d42c44727a062e233e446c6c86da1c84d762d79 (patch)
treeb4992b55032b1f92172d8a09b9d515531e0933fb /lib/test_printf.c
parent8c4cf161a8b42749e986a3503f6cd4f3b5682fe3 (diff)
downloadlinux-4d42c44727a062e233e446c6c86da1c84d762d79.tar.xz
lib/vsprintf: Print time and date in human readable format via %pt
There are users which print time and date represented by content of struct rtc_time in human readable format. Instead of open coding that each time introduce %ptR[dt][r] specifier. Cc: Arnd Bergmann <arnd@arndb.de> Cc: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Guan Xuetao <gxt@mprc.pku.edu.cn> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jason Wessel <jason.wessel@windriver.com> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Jonathan Hunter <jonathanh@nvidia.com> Cc: Krzysztof Kozlowski <krzk@kernel.org> Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net> Cc: Thierry Reding <thierry.reding@gmail.com> Cc: Petr Mladek <pmladek@suse.com> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Petr Mladek <pmladek@suse.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Diffstat (limited to 'lib/test_printf.c')
-rw-r--r--lib/test_printf.c61
1 files changed, 58 insertions, 3 deletions
diff --git a/lib/test_printf.c b/lib/test_printf.c
index 53527ea822b5..659b6cc0d483 100644
--- a/lib/test_printf.c
+++ b/lib/test_printf.c
@@ -9,6 +9,7 @@
#include <linux/module.h>
#include <linux/printk.h>
#include <linux/random.h>
+#include <linux/rtc.h>
#include <linux/slab.h>
#include <linux/string.h>
@@ -249,12 +250,11 @@ plain_format(void)
#endif /* BITS_PER_LONG == 64 */
static int __init
-plain_hash(void)
+plain_hash_to_buffer(const void *p, char *buf, size_t len)
{
- char buf[PLAIN_BUF_SIZE];
int nchars;
- nchars = snprintf(buf, PLAIN_BUF_SIZE, "%p", PTR);
+ nchars = snprintf(buf, len, "%p", p);
if (nchars != PTR_WIDTH)
return -1;
@@ -265,6 +265,20 @@ plain_hash(void)
return 0;
}
+ return 0;
+}
+
+
+static int __init
+plain_hash(void)
+{
+ char buf[PLAIN_BUF_SIZE];
+ int ret;
+
+ ret = plain_hash_to_buffer(PTR, buf, PLAIN_BUF_SIZE);
+ if (ret)
+ return ret;
+
if (strncmp(buf, PTR_STR, PTR_WIDTH) == 0)
return -1;
@@ -295,6 +309,23 @@ plain(void)
}
static void __init
+test_hashed(const char *fmt, const void *p)
+{
+ char buf[PLAIN_BUF_SIZE];
+ int ret;
+
+ /*
+ * No need to increase failed test counter since this is assumed
+ * to be called after plain().
+ */
+ ret = plain_hash_to_buffer(p, buf, PLAIN_BUF_SIZE);
+ if (ret)
+ return;
+
+ test(buf, fmt, p);
+}
+
+static void __init
symbol_ptr(void)
{
}
@@ -419,6 +450,29 @@ struct_va_format(void)
}
static void __init
+struct_rtc_time(void)
+{
+ /* 1543210543 */
+ const struct rtc_time tm = {
+ .tm_sec = 43,
+ .tm_min = 35,
+ .tm_hour = 5,
+ .tm_mday = 26,
+ .tm_mon = 10,
+ .tm_year = 118,
+ };
+
+ test_hashed("%pt", &tm);
+
+ test("2018-11-26T05:35:43", "%ptR", &tm);
+ test("0118-10-26T05:35:43", "%ptRr", &tm);
+ test("05:35:43|2018-11-26", "%ptRt|%ptRd", &tm, &tm);
+ test("05:35:43|0118-10-26", "%ptRtr|%ptRdr", &tm, &tm);
+ test("05:35:43|2018-11-26", "%ptRttr|%ptRdtr", &tm, &tm);
+ test("05:35:43 tr|2018-11-26 tr", "%ptRt tr|%ptRd tr", &tm, &tm);
+}
+
+static void __init
struct_clk(void)
{
}
@@ -529,6 +583,7 @@ test_pointer(void)
uuid();
dentry();
struct_va_format();
+ struct_rtc_time();
struct_clk();
bitmap();
netdev_features();