[PATCH v2 00/21] treewide: Introduce %ptS for struct timespec64 and convert users

[PATCH v2 00/21] treewide: Introduce %ptS for struct timespec64 and convert users

[Andy Shevchenko]

Here is the third part of the unification time printing in the kernel.
This time for struct timespec64. The first patch brings a support
into printf() implementation (test cases and documentation update
included) followed by the treewide conversion of the current users.

The idea is to have one or a few biggest users included, the rest
can be taken next release cycle on the subsystem basis, but I won't
object if the respective maintainers already give their tags. Depending
on the tags received it may go via dedicated subsystem or via PRINTK
tree. Petr, what do you think?

Note, not everything was compile-tested. Kunit test has been passed, though.

Changelog v2:
- dropped wrong patches (Hans, Takashi)
- fixed most of the checkpatch warnings (fdo CI, media CI)
- collected tags

v1: <20251110184727.666591-1-andriy.shevchenko@linux.intel.com>

Andy Shevchenko (21):
  lib/vsprintf: Add specifier for printing struct timespec64
  ceph: Switch to use %ptSp
  libceph: Switch to use %ptSp
  dma-buf: Switch to use %ptSp
  drm/amdgpu: Switch to use %ptSp
  drm/msm: Switch to use %ptSp
  drm/vblank: Switch to use %ptSp
  drm/xe: Switch to use %ptSp
  e1000e: Switch to use %ptSp
  igb: Switch to use %ptSp
  ipmi: Switch to use %ptSp
  media: av7110: Switch to use %ptSp
  mmc: mmc_test: Switch to use %ptSp
  net: dsa: sja1105: Switch to use %ptSp
  PCI: epf-test: Switch to use %ptSp
  pps: Switch to use %ptSp
  ptp: ocp: Switch to use %ptSp
  s390/dasd: Switch to use %ptSp
  scsi: fnic: Switch to use %ptS
  scsi: snic: Switch to use %ptSp
  tracing: Switch to use %ptSp

 Documentation/core-api/printk-formats.rst     | 11 ++++-
 drivers/char/ipmi/ipmi_si_intf.c              |  3 +-
 drivers/char/ipmi/ipmi_ssif.c                 |  6 +--
 drivers/dma-buf/sync_debug.c                  |  2 +-
 .../gpu/drm/amd/amdgpu/amdgpu_dev_coredump.c  |  3 +-
 drivers/gpu/drm/drm_vblank.c                  |  6 +--
 .../gpu/drm/msm/disp/msm_disp_snapshot_util.c |  3 +-
 drivers/gpu/drm/msm/msm_gpu.c                 |  3 +-
 drivers/gpu/drm/xe/xe_devcoredump.c           |  4 +-
 drivers/mmc/core/mmc_test.c                   | 20 +++-----
 drivers/net/dsa/sja1105/sja1105_tas.c         |  8 ++-
 drivers/net/ethernet/intel/e1000e/ptp.c       |  7 +--
 drivers/net/ethernet/intel/igb/igb_ptp.c      |  7 +--
 drivers/pci/endpoint/functions/pci-epf-test.c |  5 +-
 drivers/pps/generators/pps_gen_parport.c      |  3 +-
 drivers/pps/kapi.c                            |  3 +-
 drivers/ptp/ptp_ocp.c                         | 13 ++---
 drivers/s390/block/dasd.c                     |  3 +-
 drivers/scsi/fnic/fnic_trace.c                | 46 ++++++++---------
 drivers/scsi/snic/snic_debugfs.c              | 10 ++--
 drivers/scsi/snic/snic_trc.c                  |  5 +-
 drivers/staging/media/av7110/av7110.c         |  2 +-
 fs/ceph/dir.c                                 |  5 +-
 fs/ceph/inode.c                               | 49 ++++++-------------
 fs/ceph/xattr.c                               |  6 +--
 kernel/trace/trace_output.c                   |  6 +--
 lib/tests/printf_kunit.c                      |  4 ++
 lib/vsprintf.c                                | 25 ++++++++++
 net/ceph/messenger_v2.c                       |  6 +--
 29 files changed, 126 insertions(+), 148 deletions(-)

-- 
2.50.1

[PATCH v2 01/21] lib/vsprintf: Add specifier for printing struct timespec64

[Andy Shevchenko]

A handful drivers want to print a content of the struct timespec64
in a format of %lld:%09ld. In order to make their lives easier, add
the respecting specifier directly to the printf() implementation.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
 Documentation/core-api/printk-formats.rst | 11 ++++++++--
 lib/tests/printf_kunit.c                  |  4 ++++
 lib/vsprintf.c                            | 25 +++++++++++++++++++++++
 3 files changed, 38 insertions(+), 2 deletions(-)

diff --git a/Documentation/core-api/printk-formats.rst b/Documentation/core-api/printk-formats.rst
index 7f2f11b48286..c0b1b6089307 100644
--- a/Documentation/core-api/printk-formats.rst
+++ b/Documentation/core-api/printk-formats.rst
@@ -547,11 +547,13 @@ Time and date
 	%pt[RT]s		YYYY-mm-dd HH:MM:SS
 	%pt[RT]d		YYYY-mm-dd
 	%pt[RT]t		HH:MM:SS
-	%pt[RT][dt][r][s]
+	%ptSp			<seconds>.<nanoseconds>
+	%pt[RST][dt][r][s]
 
 For printing date and time as represented by::
 
-	R  struct rtc_time structure
+	R  content of struct rtc_time
+	S  content of struct timespec64
 	T  time64_t type
 
 in human readable format.
@@ -563,6 +565,11 @@ The %pt[RT]s (space) will override ISO 8601 separator by using ' ' (space)
 instead of 'T' (Capital T) between date and time. It won't have any effect
 when date or time is omitted.
 
+The %ptSp is equivalent to %lld.%09ld for the content of the struct timespec64.
+When the other specifiers are given, it becomes the respective equivalent of
+%ptT[dt][r][s].%09ld. In other words, the seconds are being printed in
+the human readable format followed by a dot and nanoseconds.
+
 Passed by reference.
 
 struct clk
diff --git a/lib/tests/printf_kunit.c b/lib/tests/printf_kunit.c
index bc54cca2d7a6..7617e5b8b02c 100644
--- a/lib/tests/printf_kunit.c
+++ b/lib/tests/printf_kunit.c
@@ -504,6 +504,7 @@ time_and_date(struct kunit *kunittest)
 	};
 	/* 2019-01-04T15:32:23 */
 	time64_t t = 1546615943;
+	struct timespec64 ts = { .tv_sec = t, .tv_nsec = 11235813 };
 
 	test("(%pt?)", "%pt", &tm);
 	test("2018-11-26T05:35:43", "%ptR", &tm);
@@ -522,6 +523,9 @@ time_and_date(struct kunit *kunittest)
 	test("0119-00-04 15:32:23", "%ptTsr", &t);
 	test("15:32:23|2019-01-04", "%ptTts|%ptTds", &t, &t);
 	test("15:32:23|0119-00-04", "%ptTtrs|%ptTdrs", &t, &t);
+
+	test("2019-01-04T15:32:23.011235813", "%ptS", &ts);
+	test("1546615943.011235813", "%ptSp", &ts);
 }
 
 static void
diff --git a/lib/vsprintf.c b/lib/vsprintf.c
index 3f99834fd788..fdd06e8957a3 100644
--- a/lib/vsprintf.c
+++ b/lib/vsprintf.c
@@ -1989,6 +1989,28 @@ char *time64_str(char *buf, char *end, const time64_t time,
 	return rtc_str(buf, end, &rtc_time, spec, fmt);
 }
 
+static noinline_for_stack
+char *timespec64_str(char *buf, char *end, const struct timespec64 *ts,
+		     struct printf_spec spec, const char *fmt)
+{
+	static const struct printf_spec default_dec09_spec = {
+		.base = 10,
+		.field_width = 9,
+		.precision = -1,
+		.flags = ZEROPAD,
+	};
+
+	if (fmt[2] == 'p')
+		buf = number(buf, end, ts->tv_sec, default_dec_spec);
+	else
+		buf = time64_str(buf, end, ts->tv_sec, spec, fmt);
+	if (buf < end)
+		*buf = '.';
+	buf++;
+
+	return number(buf, end, ts->tv_nsec, default_dec09_spec);
+}
+
 static noinline_for_stack
 char *time_and_date(char *buf, char *end, void *ptr, struct printf_spec spec,
 		    const char *fmt)
@@ -1999,6 +2021,8 @@ char *time_and_date(char *buf, char *end, void *ptr, struct printf_spec spec,
 	switch (fmt[1]) {
 	case 'R':
 		return rtc_str(buf, end, (const struct rtc_time *)ptr, spec, fmt);
+	case 'S':
+		return timespec64_str(buf, end, (const struct timespec64 *)ptr, spec, fmt);
 	case 'T':
 		return time64_str(buf, end, *(const time64_t *)ptr, spec, fmt);
 	default:
@@ -2464,6 +2488,7 @@ early_param("no_hash_pointers", no_hash_pointers_enable);
  * - 'g' For block_device name (gendisk + partition number)
  * - 't[RT][dt][r][s]' For time and date as represented by:
  *      R    struct rtc_time
+ *      S    struct timespec64
  *      T    time64_t
  * - 'C' For a clock, it prints the name (Common Clock Framework) or address
  *       (legacy clock framework) of the clock
-- 
2.50.1

[PATCH v2 02/21] ceph: Switch to use %ptSp

[Andy Shevchenko]

Use %ptSp instead of open coded variants to print content of
struct timespec64 in human readable format.

Reviewed-by: Viacheslav Dubeyko <Slava.Dubeyko@ibm.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
 fs/ceph/dir.c   |  5 ++---
 fs/ceph/inode.c | 49 ++++++++++++++++---------------------------------
 fs/ceph/xattr.c |  6 ++----
 3 files changed, 20 insertions(+), 40 deletions(-)

diff --git a/fs/ceph/dir.c b/fs/ceph/dir.c
index d18c0eaef9b7..bf50c6e7a029 100644
--- a/fs/ceph/dir.c
+++ b/fs/ceph/dir.c
@@ -2155,7 +2155,7 @@ static ssize_t ceph_read_dir(struct file *file, char __user *buf, size_t size,
 				" rfiles:   %20lld\n"
 				" rsubdirs: %20lld\n"
 				"rbytes:    %20lld\n"
-				"rctime:    %10lld.%09ld\n",
+				"rctime:    %ptSp\n",
 				ci->i_files + ci->i_subdirs,
 				ci->i_files,
 				ci->i_subdirs,
@@ -2163,8 +2163,7 @@ static ssize_t ceph_read_dir(struct file *file, char __user *buf, size_t size,
 				ci->i_rfiles,
 				ci->i_rsubdirs,
 				ci->i_rbytes,
-				ci->i_rctime.tv_sec,
-				ci->i_rctime.tv_nsec);
+				&ci->i_rctime);
 	}
 
 	if (*ppos >= dfi->dir_info_len)
diff --git a/fs/ceph/inode.c b/fs/ceph/inode.c
index 37d3a2477c17..a596cb53f1ac 100644
--- a/fs/ceph/inode.c
+++ b/fs/ceph/inode.c
@@ -879,7 +879,9 @@ void ceph_fill_file_time(struct inode *inode, int issued,
 {
 	struct ceph_client *cl = ceph_inode_to_client(inode);
 	struct ceph_inode_info *ci = ceph_inode(inode);
+	struct timespec64 iatime = inode_get_atime(inode);
 	struct timespec64 ictime = inode_get_ctime(inode);
+	struct timespec64 imtime = inode_get_mtime(inode);
 	int warn = 0;
 
 	if (issued & (CEPH_CAP_FILE_EXCL|
@@ -889,39 +891,26 @@ void ceph_fill_file_time(struct inode *inode, int issued,
 		      CEPH_CAP_XATTR_EXCL)) {
 		if (ci->i_version == 0 ||
 		    timespec64_compare(ctime, &ictime) > 0) {
-			doutc(cl, "ctime %lld.%09ld -> %lld.%09ld inc w/ cap\n",
-			     ictime.tv_sec, ictime.tv_nsec,
-			     ctime->tv_sec, ctime->tv_nsec);
+			doutc(cl, "ctime %ptSp -> %ptSp inc w/ cap\n", &ictime, ctime);
 			inode_set_ctime_to_ts(inode, *ctime);
 		}
 		if (ci->i_version == 0 ||
 		    ceph_seq_cmp(time_warp_seq, ci->i_time_warp_seq) > 0) {
 			/* the MDS did a utimes() */
-			doutc(cl, "mtime %lld.%09ld -> %lld.%09ld tw %d -> %d\n",
-			     inode_get_mtime_sec(inode),
-			     inode_get_mtime_nsec(inode),
-			     mtime->tv_sec, mtime->tv_nsec,
-			     ci->i_time_warp_seq, (int)time_warp_seq);
+			doutc(cl, "mtime %ptSp -> %ptSp tw %d -> %d\n", &imtime, mtime,
+			      ci->i_time_warp_seq, (int)time_warp_seq);
 
 			inode_set_mtime_to_ts(inode, *mtime);
 			inode_set_atime_to_ts(inode, *atime);
 			ci->i_time_warp_seq = time_warp_seq;
 		} else if (time_warp_seq == ci->i_time_warp_seq) {
-			struct timespec64	ts;
-
 			/* nobody did utimes(); take the max */
-			ts = inode_get_mtime(inode);
-			if (timespec64_compare(mtime, &ts) > 0) {
-				doutc(cl, "mtime %lld.%09ld -> %lld.%09ld inc\n",
-				     ts.tv_sec, ts.tv_nsec,
-				     mtime->tv_sec, mtime->tv_nsec);
+			if (timespec64_compare(mtime, &imtime) > 0) {
+				doutc(cl, "mtime %ptSp -> %ptSp inc\n", &imtime, mtime);
 				inode_set_mtime_to_ts(inode, *mtime);
 			}
-			ts = inode_get_atime(inode);
-			if (timespec64_compare(atime, &ts) > 0) {
-				doutc(cl, "atime %lld.%09ld -> %lld.%09ld inc\n",
-				     ts.tv_sec, ts.tv_nsec,
-				     atime->tv_sec, atime->tv_nsec);
+			if (timespec64_compare(atime, &iatime) > 0) {
+				doutc(cl, "atime %ptSp -> %ptSp inc\n", &iatime, atime);
 				inode_set_atime_to_ts(inode, *atime);
 			}
 		} else if (issued & CEPH_CAP_FILE_EXCL) {
@@ -2703,10 +2692,8 @@ int __ceph_setattr(struct mnt_idmap *idmap, struct inode *inode,
 	if (ia_valid & ATTR_ATIME) {
 		struct timespec64 atime = inode_get_atime(inode);
 
-		doutc(cl, "%p %llx.%llx atime %lld.%09ld -> %lld.%09ld\n",
-		      inode, ceph_vinop(inode),
-		      atime.tv_sec, atime.tv_nsec,
-		      attr->ia_atime.tv_sec, attr->ia_atime.tv_nsec);
+		doutc(cl, "%p %llx.%llx atime %ptSp -> %ptSp\n",
+		      inode, ceph_vinop(inode), &atime, &attr->ia_atime);
 		if (!do_sync && (issued & CEPH_CAP_FILE_EXCL)) {
 			ci->i_time_warp_seq++;
 			inode_set_atime_to_ts(inode, attr->ia_atime);
@@ -2780,10 +2767,8 @@ int __ceph_setattr(struct mnt_idmap *idmap, struct inode *inode,
 	if (ia_valid & ATTR_MTIME) {
 		struct timespec64 mtime = inode_get_mtime(inode);
 
-		doutc(cl, "%p %llx.%llx mtime %lld.%09ld -> %lld.%09ld\n",
-		      inode, ceph_vinop(inode),
-		      mtime.tv_sec, mtime.tv_nsec,
-		      attr->ia_mtime.tv_sec, attr->ia_mtime.tv_nsec);
+		doutc(cl, "%p %llx.%llx mtime %ptSp -> %ptSp\n",
+		      inode, ceph_vinop(inode), &mtime, &attr->ia_mtime);
 		if (!do_sync && (issued & CEPH_CAP_FILE_EXCL)) {
 			ci->i_time_warp_seq++;
 			inode_set_mtime_to_ts(inode, attr->ia_mtime);
@@ -2804,13 +2789,11 @@ int __ceph_setattr(struct mnt_idmap *idmap, struct inode *inode,
 
 	/* these do nothing */
 	if (ia_valid & ATTR_CTIME) {
+		struct timespec64 ictime = inode_get_ctime(inode);
 		bool only = (ia_valid & (ATTR_SIZE|ATTR_MTIME|ATTR_ATIME|
 					 ATTR_MODE|ATTR_UID|ATTR_GID)) == 0;
-		doutc(cl, "%p %llx.%llx ctime %lld.%09ld -> %lld.%09ld (%s)\n",
-		      inode, ceph_vinop(inode),
-		      inode_get_ctime_sec(inode),
-		      inode_get_ctime_nsec(inode),
-		      attr->ia_ctime.tv_sec, attr->ia_ctime.tv_nsec,
+		doutc(cl, "%p %llx.%llx ctime %ptSp -> %ptSp (%s)\n",
+		      inode, ceph_vinop(inode), &ictime, &attr->ia_ctime,
 		      only ? "ctime only" : "ignored");
 		if (only) {
 			/*
diff --git a/fs/ceph/xattr.c b/fs/ceph/xattr.c
index 537165db4519..ad1f30bea175 100644
--- a/fs/ceph/xattr.c
+++ b/fs/ceph/xattr.c
@@ -249,8 +249,7 @@ static ssize_t ceph_vxattrcb_dir_rbytes(struct ceph_inode_info *ci, char *val,
 static ssize_t ceph_vxattrcb_dir_rctime(struct ceph_inode_info *ci, char *val,
 					size_t size)
 {
-	return ceph_fmt_xattr(val, size, "%lld.%09ld", ci->i_rctime.tv_sec,
-				ci->i_rctime.tv_nsec);
+	return ceph_fmt_xattr(val, size, "%ptSp", &ci->i_rctime);
 }
 
 /* dir pin */
@@ -307,8 +306,7 @@ static bool ceph_vxattrcb_snap_btime_exists(struct ceph_inode_info *ci)
 static ssize_t ceph_vxattrcb_snap_btime(struct ceph_inode_info *ci, char *val,
 					size_t size)
 {
-	return ceph_fmt_xattr(val, size, "%lld.%09ld", ci->i_snap_btime.tv_sec,
-				ci->i_snap_btime.tv_nsec);
+	return ceph_fmt_xattr(val, size, "%ptSp", &ci->i_snap_btime);
 }
 
 static ssize_t ceph_vxattrcb_cluster_fsid(struct ceph_inode_info *ci,
-- 
2.50.1

[PATCH v2 03/21] libceph: Switch to use %ptSp

[Andy Shevchenko]

Use %ptSp instead of open coded variants to print content of
struct timespec64 in human readable format.

Reviewed-by: Viacheslav Dubeyko <Slava.Dubeyko@ibm.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
 net/ceph/messenger_v2.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/net/ceph/messenger_v2.c b/net/ceph/messenger_v2.c
index 9e39378eda00..6e676e2d4ba0 100644
--- a/net/ceph/messenger_v2.c
+++ b/net/ceph/messenger_v2.c
@@ -1535,8 +1535,7 @@ static int prepare_keepalive2(struct ceph_connection *con)
 	struct timespec64 now;
 
 	ktime_get_real_ts64(&now);
-	dout("%s con %p timestamp %lld.%09ld\n", __func__, con, now.tv_sec,
-	     now.tv_nsec);
+	dout("%s con %p timestamp %ptSp\n", __func__, con, &now);
 
 	ceph_encode_timespec64(ts, &now);
 
@@ -2729,8 +2728,7 @@ static int process_keepalive2_ack(struct ceph_connection *con,
 	ceph_decode_need(&p, end, sizeof(struct ceph_timespec), bad);
 	ceph_decode_timespec64(&con->last_keepalive_ack, p);
 
-	dout("%s con %p timestamp %lld.%09ld\n", __func__, con,
-	     con->last_keepalive_ack.tv_sec, con->last_keepalive_ack.tv_nsec);
+	dout("%s con %p timestamp %ptSp\n", __func__, con, &con->last_keepalive_ack);
 
 	return 0;
 
-- 
2.50.1

[PATCH v2 04/21] dma-buf: Switch to use %ptSp

[Andy Shevchenko]

Use %ptSp instead of open coded variants to print content of
struct timespec64 in human readable format.

Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
 drivers/dma-buf/sync_debug.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/dma-buf/sync_debug.c b/drivers/dma-buf/sync_debug.c
index 67cd69551e42..9e5d662cd4e8 100644
--- a/drivers/dma-buf/sync_debug.c
+++ b/drivers/dma-buf/sync_debug.c
@@ -59,7 +59,7 @@ static void sync_print_fence(struct seq_file *s,
 		struct timespec64 ts64 =
 			ktime_to_timespec64(fence->timestamp);
 
-		seq_printf(s, "@%lld.%09ld", (s64)ts64.tv_sec, ts64.tv_nsec);
+		seq_printf(s, "@%ptSp", &ts64);
 	}
 
 	seq_printf(s, ": %lld", fence->seqno);
-- 
2.50.1

[PATCH v2 05/21] drm/amdgpu: Switch to use %ptSp

[Andy Shevchenko]

Use %ptSp instead of open coded variants to print content of
struct timespec64 in human readable format.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_dev_coredump.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_dev_coredump.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_dev_coredump.c
index 8a026bc9ea44..4e2fe6674db8 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_dev_coredump.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_dev_coredump.c
@@ -217,8 +217,7 @@ amdgpu_devcoredump_read(char *buffer, loff_t offset, size_t count,
 	drm_printf(&p, "version: " AMDGPU_COREDUMP_VERSION "\n");
 	drm_printf(&p, "kernel: " UTS_RELEASE "\n");
 	drm_printf(&p, "module: " KBUILD_MODNAME "\n");
-	drm_printf(&p, "time: %lld.%09ld\n", coredump->reset_time.tv_sec,
-		   coredump->reset_time.tv_nsec);
+	drm_printf(&p, "time: %ptSp\n", &coredump->reset_time);
 
 	if (coredump->reset_task_info.task.pid)
 		drm_printf(&p, "process_name: %s PID: %d\n",
-- 
2.50.1

[PATCH v2 06/21] drm/msm: Switch to use %ptSp

[Andy Shevchenko]

Use %ptSp instead of open coded variants to print content of
struct timespec64 in human readable format.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
 drivers/gpu/drm/msm/disp/msm_disp_snapshot_util.c | 3 +--
 drivers/gpu/drm/msm/msm_gpu.c                     | 3 +--
 2 files changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/msm/disp/msm_disp_snapshot_util.c b/drivers/gpu/drm/msm/disp/msm_disp_snapshot_util.c
index 071bcdea80f7..19b470968f4d 100644
--- a/drivers/gpu/drm/msm/disp/msm_disp_snapshot_util.c
+++ b/drivers/gpu/drm/msm/disp/msm_disp_snapshot_util.c
@@ -82,8 +82,7 @@ void msm_disp_state_print(struct msm_disp_state *state, struct drm_printer *p)
 	drm_printf(p, "kernel: " UTS_RELEASE "\n");
 	drm_printf(p, "module: " KBUILD_MODNAME "\n");
 	drm_printf(p, "dpu devcoredump\n");
-	drm_printf(p, "time: %lld.%09ld\n",
-		state->time.tv_sec, state->time.tv_nsec);
+	drm_printf(p, "time: %ptSp\n", &state->time);
 
 	list_for_each_entry_safe(block, tmp, &state->blocks, node) {
 		drm_printf(p, "====================%s================\n", block->name);
diff --git a/drivers/gpu/drm/msm/msm_gpu.c b/drivers/gpu/drm/msm/msm_gpu.c
index 17759abc46d7..a4251afe4541 100644
--- a/drivers/gpu/drm/msm/msm_gpu.c
+++ b/drivers/gpu/drm/msm/msm_gpu.c
@@ -197,8 +197,7 @@ static ssize_t msm_gpu_devcoredump_read(char *buffer, loff_t offset,
 	drm_printf(&p, "---\n");
 	drm_printf(&p, "kernel: " UTS_RELEASE "\n");
 	drm_printf(&p, "module: " KBUILD_MODNAME "\n");
-	drm_printf(&p, "time: %lld.%09ld\n",
-		state->time.tv_sec, state->time.tv_nsec);
+	drm_printf(&p, "time: %ptSp\n", &state->time);
 	if (state->comm)
 		drm_printf(&p, "comm: %s\n", state->comm);
 	if (state->cmd)
-- 
2.50.1

[PATCH v2 07/21] drm/vblank: Switch to use %ptSp

[Andy Shevchenko]

Use %ptSp instead of open coded variants to print content of
struct timespec64 in human readable format.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
 drivers/gpu/drm/drm_vblank.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/drm_vblank.c b/drivers/gpu/drm/drm_vblank.c
index 32d013c5c8fc..5c14140cd0c2 100644
--- a/drivers/gpu/drm/drm_vblank.c
+++ b/drivers/gpu/drm/drm_vblank.c
@@ -806,10 +806,8 @@ drm_crtc_vblank_helper_get_vblank_timestamp_internal(
 	ts_vblank_time = ktime_to_timespec64(*vblank_time);
 
 	drm_dbg_vbl(dev,
-		    "crtc %u : v p(%d,%d)@ %lld.%06ld -> %lld.%06ld [e %d us, %d rep]\n",
-		    pipe, hpos, vpos,
-		    (u64)ts_etime.tv_sec, ts_etime.tv_nsec / 1000,
-		    (u64)ts_vblank_time.tv_sec, ts_vblank_time.tv_nsec / 1000,
+		    "crtc %u : v p(%d,%d)@ %ptSp -> %ptSp [e %d us, %d rep]\n",
+		    pipe, hpos, vpos, &ts_etime, &ts_vblank_time,
 		    duration_ns / 1000, i);
 
 	return true;
-- 
2.50.1

[PATCH v2 08/21] drm/xe: Switch to use %ptSp

[Andy Shevchenko]

Use %ptSp instead of open coded variants to print content of
struct timespec64 in human readable format.

Acked-by: Lucas De Marchi <lucas.demarchi@intel.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
 drivers/gpu/drm/xe/xe_devcoredump.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/xe/xe_devcoredump.c b/drivers/gpu/drm/xe/xe_devcoredump.c
index 203e3038cc81..d444eda65ca6 100644
--- a/drivers/gpu/drm/xe/xe_devcoredump.c
+++ b/drivers/gpu/drm/xe/xe_devcoredump.c
@@ -106,9 +106,9 @@ static ssize_t __xe_devcoredump_read(char *buffer, ssize_t count,
 	drm_puts(&p, "module: " KBUILD_MODNAME "\n");
 
 	ts = ktime_to_timespec64(ss->snapshot_time);
-	drm_printf(&p, "Snapshot time: %lld.%09ld\n", ts.tv_sec, ts.tv_nsec);
+	drm_printf(&p, "Snapshot time: %ptSp\n", &ts);
 	ts = ktime_to_timespec64(ss->boot_time);
-	drm_printf(&p, "Uptime: %lld.%09ld\n", ts.tv_sec, ts.tv_nsec);
+	drm_printf(&p, "Uptime: %ptSp\n", &ts);
 	drm_printf(&p, "Process: %s [%d]\n", ss->process_name, ss->pid);
 	xe_device_snapshot_print(xe, &p);
 
-- 
2.50.1

[PATCH v2 09/21] e1000e: Switch to use %ptSp

[Andy Shevchenko]

Use %ptSp instead of open coded variants to print content of
struct timespec64 in human readable format.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
 drivers/net/ethernet/intel/e1000e/ptp.c | 7 ++-----
 1 file changed, 2 insertions(+), 5 deletions(-)

diff --git a/drivers/net/ethernet/intel/e1000e/ptp.c b/drivers/net/ethernet/intel/e1000e/ptp.c
index ea3c3eb2ef20..ec39e35f3857 100644
--- a/drivers/net/ethernet/intel/e1000e/ptp.c
+++ b/drivers/net/ethernet/intel/e1000e/ptp.c
@@ -229,14 +229,11 @@ static void e1000e_systim_overflow_work(struct work_struct *work)
 						     systim_overflow_work.work);
 	struct e1000_hw *hw = &adapter->hw;
 	struct timespec64 ts;
-	u64 ns;
 
 	/* Update the timecounter */
-	ns = timecounter_read(&adapter->tc);
+	ts = ns_to_timespec64(timecounter_read(&adapter->tc));
 
-	ts = ns_to_timespec64(ns);
-	e_dbg("SYSTIM overflow check at %lld.%09lu\n",
-	      (long long) ts.tv_sec, ts.tv_nsec);
+	e_dbg("SYSTIM overflow check at %ptSp\n", &ts);
 
 	schedule_delayed_work(&adapter->systim_overflow_work,
 			      E1000_SYSTIM_OVERFLOW_PERIOD);
-- 
2.50.1

[PATCH v2 10/21] igb: Switch to use %ptSp

[Andy Shevchenko]

Use %ptSp instead of open coded variants to print content of
struct timespec64 in human readable format.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
 drivers/net/ethernet/intel/igb/igb_ptp.c | 7 ++-----
 1 file changed, 2 insertions(+), 5 deletions(-)

diff --git a/drivers/net/ethernet/intel/igb/igb_ptp.c b/drivers/net/ethernet/intel/igb/igb_ptp.c
index a7876882aeaf..bd85d02ecadd 100644
--- a/drivers/net/ethernet/intel/igb/igb_ptp.c
+++ b/drivers/net/ethernet/intel/igb/igb_ptp.c
@@ -840,14 +840,11 @@ static void igb_ptp_overflow_check(struct work_struct *work)
 	struct igb_adapter *igb =
 		container_of(work, struct igb_adapter, ptp_overflow_work.work);
 	struct timespec64 ts;
-	u64 ns;
 
 	/* Update the timecounter */
-	ns = timecounter_read(&igb->tc);
+	ts = ns_to_timespec64(timecounter_read(&igb->tc));
 
-	ts = ns_to_timespec64(ns);
-	pr_debug("igb overflow check at %lld.%09lu\n",
-		 (long long) ts.tv_sec, ts.tv_nsec);
+	pr_debug("igb overflow check at %ptSp\n", &ts);
 
 	schedule_delayed_work(&igb->ptp_overflow_work,
 			      IGB_SYSTIM_OVERFLOW_PERIOD);
-- 
2.50.1

[PATCH v2 11/21] ipmi: Switch to use %ptSp

[Andy Shevchenko]

Use %ptSp instead of open coded variants to print content of
struct timespec64 in human readable format.

Acked-by: Corey Minyard <cminyard@mvista.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
 drivers/char/ipmi/ipmi_si_intf.c | 3 +--
 drivers/char/ipmi/ipmi_ssif.c    | 6 ++----
 2 files changed, 3 insertions(+), 6 deletions(-)

diff --git a/drivers/char/ipmi/ipmi_si_intf.c b/drivers/char/ipmi/ipmi_si_intf.c
index 70e55f5ff85e..5459ffdde8dc 100644
--- a/drivers/char/ipmi/ipmi_si_intf.c
+++ b/drivers/char/ipmi/ipmi_si_intf.c
@@ -275,8 +275,7 @@ void debug_timestamp(struct smi_info *smi_info, char *msg)
 	struct timespec64 t;
 
 	ktime_get_ts64(&t);
-	dev_dbg(smi_info->io.dev, "**%s: %lld.%9.9ld\n",
-		msg, t.tv_sec, t.tv_nsec);
+	dev_dbg(smi_info->io.dev, "**%s: %ptSp\n", msg, &t);
 }
 #else
 #define debug_timestamp(smi_info, x)
diff --git a/drivers/char/ipmi/ipmi_ssif.c b/drivers/char/ipmi/ipmi_ssif.c
index 1b63f7d2fcda..ef1582a029f4 100644
--- a/drivers/char/ipmi/ipmi_ssif.c
+++ b/drivers/char/ipmi/ipmi_ssif.c
@@ -1083,10 +1083,8 @@ static int sender(void *send_info, struct ipmi_smi_msg *msg)
 		struct timespec64 t;
 
 		ktime_get_real_ts64(&t);
-		dev_dbg(&ssif_info->client->dev,
-			"**Enqueue %02x %02x: %lld.%6.6ld\n",
-			msg->data[0], msg->data[1],
-			(long long)t.tv_sec, (long)t.tv_nsec / NSEC_PER_USEC);
+		dev_dbg(&ssif_info->client->dev, "**Enqueue %02x %02x: %ptSp\n",
+			msg->data[0], msg->data[1], &t);
 	}
 	return IPMI_CC_NO_ERROR;
 }
-- 
2.50.1

[PATCH v2 12/21] media: av7110: Switch to use %ptSp

[Andy Shevchenko]

Use %ptSp instead of open coded variants to print content of
struct timespec64 in human readable format.

Acked-by: Hans Verkuil <hverkuil+cisco@kernel.org>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
 drivers/staging/media/av7110/av7110.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/staging/media/av7110/av7110.c b/drivers/staging/media/av7110/av7110.c
index bc9a2a40afcb..602342d1174f 100644
--- a/drivers/staging/media/av7110/av7110.c
+++ b/drivers/staging/media/av7110/av7110.c
@@ -321,7 +321,7 @@ static inline void print_time(char *s)
 	struct timespec64 ts;
 
 	ktime_get_real_ts64(&ts);
-	pr_info("%s(): %lld.%09ld\n", s, (s64)ts.tv_sec, ts.tv_nsec);
+	pr_info("%s(): %ptSp\n", s, &ts);
 #endif
 }
 
-- 
2.50.1

[PATCH v2 13/21] mmc: mmc_test: Switch to use %ptSp

[Andy Shevchenko]

Use %ptSp instead of open coded variants to print content of
struct timespec64 in human readable format.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
 drivers/mmc/core/mmc_test.c | 20 ++++++++------------
 1 file changed, 8 insertions(+), 12 deletions(-)

diff --git a/drivers/mmc/core/mmc_test.c b/drivers/mmc/core/mmc_test.c
index a74089df4547..01d1e62c2ce7 100644
--- a/drivers/mmc/core/mmc_test.c
+++ b/drivers/mmc/core/mmc_test.c
@@ -586,14 +586,11 @@ static void mmc_test_print_avg_rate(struct mmc_test_card *test, uint64_t bytes,
 	rate = mmc_test_rate(tot, &ts);
 	iops = mmc_test_rate(count * 100, &ts); /* I/O ops per sec x 100 */
 
-	pr_info("%s: Transfer of %u x %u sectors (%u x %u%s KiB) took "
-			 "%llu.%09u seconds (%u kB/s, %u KiB/s, "
-			 "%u.%02u IOPS, sg_len %d)\n",
-			 mmc_hostname(test->card->host), count, sectors, count,
-			 sectors >> 1, (sectors & 1 ? ".5" : ""),
-			 (u64)ts.tv_sec, (u32)ts.tv_nsec,
-			 rate / 1000, rate / 1024, iops / 100, iops % 100,
-			 test->area.sg_len);
+	pr_info("%s: Transfer of %u x %u sectors (%u x %u%s KiB) took %ptSp seconds (%u kB/s, %u KiB/s, %u.%02u IOPS, sg_len %d)\n",
+		mmc_hostname(test->card->host), count, sectors, count,
+		sectors >> 1, (sectors & 1 ? ".5" : ""), &ts,
+		rate / 1000, rate / 1024, iops / 100, iops % 100,
+		test->area.sg_len);
 
 	mmc_test_save_transfer_result(test, count, sectors, ts, rate, iops);
 }
@@ -3074,10 +3071,9 @@ static int mtf_test_show(struct seq_file *sf, void *data)
 		seq_printf(sf, "Test %d: %d\n", gr->testcase + 1, gr->result);
 
 		list_for_each_entry(tr, &gr->tr_lst, link) {
-			seq_printf(sf, "%u %d %llu.%09u %u %u.%02u\n",
-				tr->count, tr->sectors,
-				(u64)tr->ts.tv_sec, (u32)tr->ts.tv_nsec,
-				tr->rate, tr->iops / 100, tr->iops % 100);
+			seq_printf(sf, "%u %d %ptSp %u %u.%02u\n",
+				   tr->count, tr->sectors, &tr->ts, tr->rate,
+				   tr->iops / 100, tr->iops % 100);
 		}
 	}
 
-- 
2.50.1

[PATCH v2 14/21] net: dsa: sja1105: Switch to use %ptSp

[Andy Shevchenko]

Use %ptSp instead of open coded variants to print content of
struct timespec64 in human readable format.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
 drivers/net/dsa/sja1105/sja1105_tas.c | 8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)

diff --git a/drivers/net/dsa/sja1105/sja1105_tas.c b/drivers/net/dsa/sja1105/sja1105_tas.c
index d7818710bc02..d5949d2c3e71 100644
--- a/drivers/net/dsa/sja1105/sja1105_tas.c
+++ b/drivers/net/dsa/sja1105/sja1105_tas.c
@@ -775,9 +775,8 @@ static void sja1105_tas_state_machine(struct work_struct *work)
 		base_time_ts = ns_to_timespec64(base_time);
 		now_ts = ns_to_timespec64(now);
 
-		dev_dbg(ds->dev, "OPER base time %lld.%09ld (now %lld.%09ld)\n",
-			base_time_ts.tv_sec, base_time_ts.tv_nsec,
-			now_ts.tv_sec, now_ts.tv_nsec);
+		dev_dbg(ds->dev, "OPER base time %ptSp (now %ptSp)\n",
+			&base_time_ts, &now_ts);
 
 		break;
 
@@ -798,8 +797,7 @@ static void sja1105_tas_state_machine(struct work_struct *work)
 		if (now < tas_data->oper_base_time) {
 			/* TAS has not started yet */
 			diff = ns_to_timespec64(tas_data->oper_base_time - now);
-			dev_dbg(ds->dev, "time to start: [%lld.%09ld]",
-				diff.tv_sec, diff.tv_nsec);
+			dev_dbg(ds->dev, "time to start: [%ptSp]", &diff);
 			break;
 		}
 
-- 
2.50.1

[PATCH v2 15/21] PCI: epf-test: Switch to use %ptSp

[Andy Shevchenko]

Use %ptSp instead of open coded variants to print content of
struct timespec64 in human readable format.

Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
 drivers/pci/endpoint/functions/pci-epf-test.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/drivers/pci/endpoint/functions/pci-epf-test.c b/drivers/pci/endpoint/functions/pci-epf-test.c
index b05e8db575c3..debd235253c5 100644
--- a/drivers/pci/endpoint/functions/pci-epf-test.c
+++ b/drivers/pci/endpoint/functions/pci-epf-test.c
@@ -331,9 +331,8 @@ static void pci_epf_test_print_rate(struct pci_epf_test *epf_test,
 		rate = div64_u64(size * NSEC_PER_SEC, ns * 1000);
 
 	dev_info(&epf_test->epf->dev,
-		 "%s => Size: %llu B, DMA: %s, Time: %llu.%09u s, Rate: %llu KB/s\n",
-		 op, size, dma ? "YES" : "NO",
-		 (u64)ts.tv_sec, (u32)ts.tv_nsec, rate);
+		 "%s => Size: %llu B, DMA: %s, Time: %ptSp s, Rate: %llu KB/s\n",
+		 op, size, dma ? "YES" : "NO", &ts, rate);
 }
 
 static void pci_epf_test_copy(struct pci_epf_test *epf_test,
-- 
2.50.1

[PATCH v2 16/21] pps: Switch to use %ptSp

[Andy Shevchenko]

Use %ptSp instead of open coded variants to print content of
struct timespec64 in human readable format.

Acked-by: Rodolfo Giometti <giometti@enneenne.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
 drivers/pps/generators/pps_gen_parport.c | 3 +--
 drivers/pps/kapi.c                       | 3 +--
 2 files changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/pps/generators/pps_gen_parport.c b/drivers/pps/generators/pps_gen_parport.c
index f5eeb4dd01ad..05bbf8d30ef1 100644
--- a/drivers/pps/generators/pps_gen_parport.c
+++ b/drivers/pps/generators/pps_gen_parport.c
@@ -80,8 +80,7 @@ static enum hrtimer_restart hrtimer_event(struct hrtimer *timer)
 	/* check if we are late */
 	if (expire_time.tv_sec != ts1.tv_sec || ts1.tv_nsec > lim) {
 		local_irq_restore(flags);
-		pr_err("we are late this time %lld.%09ld\n",
-				(s64)ts1.tv_sec, ts1.tv_nsec);
+		pr_err("we are late this time %ptSp\n", &ts1);
 		goto done;
 	}
 
diff --git a/drivers/pps/kapi.c b/drivers/pps/kapi.c
index e9389876229e..6985c34de2ce 100644
--- a/drivers/pps/kapi.c
+++ b/drivers/pps/kapi.c
@@ -163,8 +163,7 @@ void pps_event(struct pps_device *pps, struct pps_event_time *ts, int event,
 	/* check event type */
 	BUG_ON((event & (PPS_CAPTUREASSERT | PPS_CAPTURECLEAR)) == 0);
 
-	dev_dbg(&pps->dev, "PPS event at %lld.%09ld\n",
-			(s64)ts->ts_real.tv_sec, ts->ts_real.tv_nsec);
+	dev_dbg(&pps->dev, "PPS event at %ptSp\n", &ts->ts_real);
 
 	timespec_to_pps_ktime(&ts_real, ts->ts_real);
 
-- 
2.50.1

[PATCH v2 17/21] ptp: ocp: Switch to use %ptSp

[Andy Shevchenko]

Use %ptSp instead of open coded variants to print content of
struct timespec64 in human readable format.

While at it, fix wrong use of %ptT against struct timespec64.
It's kinda lucky that it worked just because the first member
there 64-bit and it's of time64_t type. Now with %ptS it may
be used correctly.

Acked-by: Vadim Fedorenko <vadim.fedorenko@linux.dev>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
 drivers/ptp/ptp_ocp.c | 13 +++++--------
 1 file changed, 5 insertions(+), 8 deletions(-)

diff --git a/drivers/ptp/ptp_ocp.c b/drivers/ptp/ptp_ocp.c
index eeebe4d149f7..21a8109fae34 100644
--- a/drivers/ptp/ptp_ocp.c
+++ b/drivers/ptp/ptp_ocp.c
@@ -4293,11 +4293,9 @@ ptp_ocp_summary_show(struct seq_file *s, void *data)
 		ns += (s64)bp->utc_tai_offset * NSEC_PER_SEC;
 		sys_ts = ns_to_timespec64(ns);
 
-		seq_printf(s, "%7s: %lld.%ld == %ptT TAI\n", "PHC",
-			   ts.tv_sec, ts.tv_nsec, &ts);
-		seq_printf(s, "%7s: %lld.%ld == %ptT UTC offset %d\n", "SYS",
-			   sys_ts.tv_sec, sys_ts.tv_nsec, &sys_ts,
-			   bp->utc_tai_offset);
+		seq_printf(s, "%7s: %ptSp == %ptS TAI\n", "PHC", &ts, &ts);
+		seq_printf(s, "%7s: %ptSp == %ptS UTC offset %d\n", "SYS",
+			   &sys_ts, &sys_ts, bp->utc_tai_offset);
 		seq_printf(s, "%7s: PHC:SYS offset: %lld  window: %lld\n", "",
 			   timespec64_to_ns(&ts) - ns,
 			   post_ns - pre_ns);
@@ -4505,9 +4503,8 @@ ptp_ocp_phc_info(struct ptp_ocp *bp)
 		 ptp_clock_index(bp->ptp));
 
 	if (!ptp_ocp_gettimex(&bp->ptp_info, &ts, NULL))
-		dev_info(&bp->pdev->dev, "Time: %lld.%ld, %s\n",
-			 ts.tv_sec, ts.tv_nsec,
-			 bp->sync ? "in-sync" : "UNSYNCED");
+		dev_info(&bp->pdev->dev, "Time: %ptSp, %s\n",
+			 &ts, bp->sync ? "in-sync" : "UNSYNCED");
 }
 
 static void
-- 
2.50.1

[PATCH v2 18/21] s390/dasd: Switch to use %ptSp

[Andy Shevchenko]

Use %ptSp instead of open coded variants to print content of
struct timespec64 in human readable format.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
 drivers/s390/block/dasd.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/s390/block/dasd.c b/drivers/s390/block/dasd.c
index 7765e40f7cea..97dcc70f669e 100644
--- a/drivers/s390/block/dasd.c
+++ b/drivers/s390/block/dasd.c
@@ -974,8 +974,7 @@ static void dasd_stats_array(struct seq_file *m, unsigned int *array)
 static void dasd_stats_seq_print(struct seq_file *m,
 				 struct dasd_profile_info *data)
 {
-	seq_printf(m, "start_time %lld.%09ld\n",
-		   (s64)data->starttod.tv_sec, data->starttod.tv_nsec);
+	seq_printf(m, "start_time %ptSp\n", &data->starttod);
 	seq_printf(m, "total_requests %u\n", data->dasd_io_reqs);
 	seq_printf(m, "total_sectors %u\n", data->dasd_io_sects);
 	seq_printf(m, "total_pav %u\n", data->dasd_io_alias);
-- 
2.50.1

[PATCH v2 19/21] scsi: fnic: Switch to use %ptS

[Andy Shevchenko]

Use %ptS instead of open coded variants to print content of
struct timespec64 in human readable format.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
 drivers/scsi/fnic/fnic_trace.c | 46 +++++++++++++++-------------------
 1 file changed, 20 insertions(+), 26 deletions(-)

diff --git a/drivers/scsi/fnic/fnic_trace.c b/drivers/scsi/fnic/fnic_trace.c
index cdc6b12b1ec2..f5543bb92ee4 100644
--- a/drivers/scsi/fnic/fnic_trace.c
+++ b/drivers/scsi/fnic/fnic_trace.c
@@ -138,9 +138,8 @@ int fnic_get_trace_data(fnic_dbgfs_t *fnic_dbgfs_prt)
 			 */
 			len += scnprintf(fnic_dbgfs_prt->buffer + len,
 				  (trace_max_pages * PAGE_SIZE * 3) - len,
-				  "%16llu.%09lu %-50s %8x %8x %16llx %16llx "
-				  "%16llx %16llx %16llx\n", (u64)val.tv_sec,
-				  val.tv_nsec, str, tbp->host_no, tbp->tag,
+				  "%ptSp %-50s %8x %8x %16llx %16llx %16llx %16llx %16llx\n",
+				  &val, str, tbp->host_no, tbp->tag,
 				  tbp->data[0], tbp->data[1], tbp->data[2],
 				  tbp->data[3], tbp->data[4]);
 			rd_idx++;
@@ -180,9 +179,8 @@ int fnic_get_trace_data(fnic_dbgfs_t *fnic_dbgfs_prt)
 			 */
 			len += scnprintf(fnic_dbgfs_prt->buffer + len,
 				  (trace_max_pages * PAGE_SIZE * 3) - len,
-				  "%16llu.%09lu %-50s %8x %8x %16llx %16llx "
-				  "%16llx %16llx %16llx\n", (u64)val.tv_sec,
-				  val.tv_nsec, str, tbp->host_no, tbp->tag,
+				  "%ptSp %-50s %8x %8x %16llx %16llx %16llx %16llx %16llx\n",
+				  &val, str, tbp->host_no, tbp->tag,
 				  tbp->data[0], tbp->data[1], tbp->data[2],
 				  tbp->data[3], tbp->data[4]);
 			rd_idx++;
@@ -225,20 +223,16 @@ int fnic_get_stats_data(struct stats_debug_info *debug,
 		"------------------------------------------\n");
 
 	len += scnprintf(debug->debug_buffer + len, buf_size - len,
-		"Current time :          [%lld:%ld]\n"
-		"Last stats reset time:  [%lld:%09ld]\n"
-		"Last stats read time:   [%lld:%ld]\n"
-		"delta since last reset: [%lld:%ld]\n"
-		"delta since last read:  [%lld:%ld]\n",
-	(s64)val1.tv_sec, val1.tv_nsec,
-	(s64)stats->stats_timestamps.last_reset_time.tv_sec,
-	stats->stats_timestamps.last_reset_time.tv_nsec,
-	(s64)stats->stats_timestamps.last_read_time.tv_sec,
-	stats->stats_timestamps.last_read_time.tv_nsec,
-	(s64)timespec64_sub(val1, stats->stats_timestamps.last_reset_time).tv_sec,
-	timespec64_sub(val1, stats->stats_timestamps.last_reset_time).tv_nsec,
-	(s64)timespec64_sub(val1, stats->stats_timestamps.last_read_time).tv_sec,
-	timespec64_sub(val1, stats->stats_timestamps.last_read_time).tv_nsec);
+		"Current time :          [%ptSp]\n"
+		"Last stats reset time:  [%ptSp]\n"
+		"Last stats read time:   [%ptSp]\n"
+		"delta since last reset: [%ptSp]\n"
+		"delta since last read:  [%ptSp]\n",
+	&val1,
+	&stats->stats_timestamps.last_reset_time,
+	&stats->stats_timestamps.last_read_time,
+	&timespec64_sub(val1, stats->stats_timestamps.last_reset_time),
+	&timespec64_sub(val1, stats->stats_timestamps.last_read_time));
 
 	stats->stats_timestamps.last_read_time = val1;
 
@@ -416,8 +410,8 @@ int fnic_get_stats_data(struct stats_debug_info *debug,
 	jiffies_to_timespec64(stats->misc_stats.last_ack_time, &val2);
 
 	len += scnprintf(debug->debug_buffer + len, buf_size - len,
-		  "Last ISR time: %llu (%8llu.%09lu)\n"
-		  "Last ACK time: %llu (%8llu.%09lu)\n"
+		  "Last ISR time: %llu (%ptSp)\n"
+		  "Last ACK time: %llu (%ptSp)\n"
 		  "Max ISR jiffies: %llu\n"
 		  "Max ISR time (ms) (0 denotes < 1 ms): %llu\n"
 		  "Corr. work done: %llu\n"
@@ -438,9 +432,9 @@ int fnic_get_stats_data(struct stats_debug_info *debug,
 		 "Number of receive frame errors: %lld\n"
 		 "Port speed (in Mbps): %lld\n",
 		  (u64)stats->misc_stats.last_isr_time,
-		  (s64)val1.tv_sec, val1.tv_nsec,
+		  &val1,
 		  (u64)stats->misc_stats.last_ack_time,
-		  (s64)val2.tv_sec, val2.tv_nsec,
+		  &val2,
 		  (u64)atomic64_read(&stats->misc_stats.max_isr_jiffies),
 		  (u64)atomic64_read(&stats->misc_stats.max_isr_time_ms),
 		  (u64)atomic64_read(&stats->misc_stats.corr_work_done),
@@ -857,8 +851,8 @@ void copy_and_format_trace_data(struct fc_trace_hdr *tdata,
 	len = *orig_len;
 
 	len += scnprintf(fnic_dbgfs_prt->buffer + len, max_size - len,
-			 "%ptTs.%09lu ns%8x       %c%8x\t",
-			 &tdata->time_stamp.tv_sec, tdata->time_stamp.tv_nsec,
+			 "%ptSs ns%8x       %c%8x\t",
+			 &tdata->time_stamp,
 			 tdata->host_no, tdata->frame_type, tdata->frame_len);
 
 	fc_trace = (char *)FC_TRACE_ADDRESS(tdata);
-- 
2.50.1

[PATCH v2 20/21] scsi: snic: Switch to use %ptSp

[Andy Shevchenko]

Use %ptSp instead of open coded variants to print content of
struct timespec64 in human readable format.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
 drivers/scsi/snic/snic_debugfs.c | 10 ++++------
 drivers/scsi/snic/snic_trc.c     |  5 ++---
 2 files changed, 6 insertions(+), 9 deletions(-)

diff --git a/drivers/scsi/snic/snic_debugfs.c b/drivers/scsi/snic/snic_debugfs.c
index 9dd975b36b5b..edf3e5ef28a6 100644
--- a/drivers/scsi/snic/snic_debugfs.c
+++ b/drivers/scsi/snic/snic_debugfs.c
@@ -282,8 +282,8 @@ snic_stats_show(struct seq_file *sfp, void *data)
 	jiffies_to_timespec64(stats->misc.last_ack_time, &last_ack_tms);
 
 	seq_printf(sfp,
-		   "Last ISR Time               : %llu (%8llu.%09lu)\n"
-		   "Last Ack Time               : %llu (%8llu.%09lu)\n"
+		   "Last ISR Time               : %llu (%ptSp)\n"
+		   "Last Ack Time               : %llu (%ptSp)\n"
 		   "Ack ISRs                    : %llu\n"
 		   "IO Cmpl ISRs                : %llu\n"
 		   "Err Notify ISRs             : %llu\n"
@@ -298,10 +298,8 @@ snic_stats_show(struct seq_file *sfp, void *data)
 		   "Queue Ramp Down             : %lld\n"
 		   "Queue Last Queue Depth      : %lld\n"
 		   "Target Not Ready            : %lld\n",
-		   (u64) stats->misc.last_isr_time,
-		   last_isr_tms.tv_sec, last_isr_tms.tv_nsec,
-		   (u64)stats->misc.last_ack_time,
-		   last_ack_tms.tv_sec, last_ack_tms.tv_nsec,
+		   (u64) stats->misc.last_isr_time, &last_isr_tms,
+		   (u64) stats->misc.last_ack_time, &last_ack_tms,
 		   (u64) atomic64_read(&stats->misc.ack_isr_cnt),
 		   (u64) atomic64_read(&stats->misc.cmpl_isr_cnt),
 		   (u64) atomic64_read(&stats->misc.errnotify_isr_cnt),
diff --git a/drivers/scsi/snic/snic_trc.c b/drivers/scsi/snic/snic_trc.c
index c2e5ab7e976c..6bad1ea9a6a7 100644
--- a/drivers/scsi/snic/snic_trc.c
+++ b/drivers/scsi/snic/snic_trc.c
@@ -56,9 +56,8 @@ snic_fmt_trc_data(struct snic_trc_data *td, char *buf, int buf_sz)
 	jiffies_to_timespec64(td->ts, &tmspec);
 
 	len += snprintf(buf, buf_sz,
-			"%llu.%09lu %-25s %3d %4x %16llx %16llx %16llx %16llx %16llx\n",
-			tmspec.tv_sec,
-			tmspec.tv_nsec,
+			"%ptSp %-25s %3d %4x %16llx %16llx %16llx %16llx %16llx\n",
+			&tmspec,
 			td->fn,
 			td->hno,
 			td->tag,
-- 
2.50.1

[PATCH v2 21/21] tracing: Switch to use %ptSp

[Andy Shevchenko]

Use %ptSp instead of open coded variants to print content of
struct timespec64 in human readable format.

Acked-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
 kernel/trace/trace_output.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/kernel/trace/trace_output.c b/kernel/trace/trace_output.c
index ebbab3e9622b..cc2d3306bb60 100644
--- a/kernel/trace/trace_output.c
+++ b/kernel/trace/trace_output.c
@@ -1490,12 +1490,12 @@ trace_hwlat_print(struct trace_iterator *iter, int flags,
 
 	trace_assign_type(field, entry);
 
-	trace_seq_printf(s, "#%-5u inner/outer(us): %4llu/%-5llu ts:%lld.%09ld count:%d",
+	trace_seq_printf(s, "#%-5u inner/outer(us): %4llu/%-5llu ts:%ptSp count:%d",
 			 field->seqnum,
 			 field->duration,
 			 field->outer_duration,
-			 (long long)field->timestamp.tv_sec,
-			 field->timestamp.tv_nsec, field->count);
+			 &field->timestamp,
+			 field->count);
 
 	if (field->nmi_count) {
 		/*
-- 
2.50.1

Re: [PATCH v2 04/21] dma-buf: Switch to use %ptSp

[Sumit Semwal]

Hello Andy,


On Tue, 11 Nov 2025 at 17:57, Andy Shevchenko
<andriy.shevchenko@linux.intel.com> wrote:
>
> Use %ptSp instead of open coded variants to print content of
> struct timespec64 in human readable format.
>
> Reviewed-by: Christian König <christian.koenig@amd.com>
> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Thanks for the patch.

FWIW, please feel free to add
Acked-by: Sumit Semwal <sumit.semwal@linaro.org>

Best,
Sumit.
> ---
>  drivers/dma-buf/sync_debug.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/dma-buf/sync_debug.c b/drivers/dma-buf/sync_debug.c
> index 67cd69551e42..9e5d662cd4e8 100644
> --- a/drivers/dma-buf/sync_debug.c
> +++ b/drivers/dma-buf/sync_debug.c
> @@ -59,7 +59,7 @@ static void sync_print_fence(struct seq_file *s,
>                 struct timespec64 ts64 =
>                         ktime_to_timespec64(fence->timestamp);
>
> -               seq_printf(s, "@%lld.%09ld", (s64)ts64.tv_sec, ts64.tv_nsec);
> +               seq_printf(s, "@%ptSp", &ts64);
>         }
>
>         seq_printf(s, ": %lld", fence->seqno);
> --
> 2.50.1
>

RE: [PATCH v2 05/21] drm/amdgpu: Switch to use %ptSp

[Deucher, Alexander]

[Public]

> -----Original Message-----
> From: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
> Sent: Tuesday, November 11, 2025 7:20 AM
> To: Corey Minyard <corey@minyard.net>; Koenig, Christian
> <Christian.Koenig@amd.com>; Dr. David Alan Gilbert <linux@treblig.org>;
> Deucher, Alexander <Alexander.Deucher@amd.com>; Thomas Zimmermann
> <tzimmermann@suse.de>; Dmitry Baryshkov
> <dmitry.baryshkov@oss.qualcomm.com>; Rob Clark
> <robin.clark@oss.qualcomm.com>; Matthew Brost
> <matthew.brost@intel.com>; Ulf Hansson <ulf.hansson@linaro.org>; Andy
> Shevchenko <andriy.shevchenko@linux.intel.com>; Vitaly Lifshits
> <vitaly.lifshits@intel.com>; Manivannan Sadhasivam <mani@kernel.org>;
> Niklas Cassel <cassel@kernel.org>; Calvin Owens <calvin@wbinvd.org>; Vadim
> Fedorenko <vadim.fedorenko@linux.dev>; Sagi Maimon
> <maimon.sagi@gmail.com>; Martin K. Petersen
> <martin.petersen@oracle.com>; Karan Tilak Kumar <kartilak@cisco.com>;
> Hans Verkuil <hverkuil+cisco@kernel.org>; Casey Schaufler <casey@schaufler-
> ca.com>; Steven Rostedt <rostedt@goodmis.org>; Petr Mladek
> <pmladek@suse.com>; Viacheslav Dubeyko <Slava.Dubeyko@ibm.com>; Max
> Kellermann <max.kellermann@ionos.com>; linux-doc@vger.kernel.org; linux-
> kernel@vger.kernel.org; openipmi-developer@lists.sourceforge.net; linux-
> media@vger.kernel.org; dri-devel@lists.freedesktop.org; linaro-mm-
> sig@lists.linaro.org; amd-gfx@lists.freedesktop.org; linux-arm-
> msm@vger.kernel.org; freedreno@lists.freedesktop.org; intel-
> xe@lists.freedesktop.org; linux-mmc@vger.kernel.org;
> netdev@vger.kernel.org; intel-wired-lan@lists.osuosl.org; linux-
> pci@vger.kernel.org; linux-s390@vger.kernel.org; linux-scsi@vger.kernel.org;
> linux-staging@lists.linux.dev; ceph-devel@vger.kernel.org; linux-trace-
> kernel@vger.kernel.org
> Cc: Rasmus Villemoes <linux@rasmusvillemoes.dk>; Sergey Senozhatsky
> <senozhatsky@chromium.org>; Jonathan Corbet <corbet@lwn.net>; Sumit
> Semwal <sumit.semwal@linaro.org>; Gustavo Padovan
> <gustavo@padovan.org>; David Airlie <airlied@gmail.com>; Simona Vetter
> <simona@ffwll.ch>; Maarten Lankhorst
> <maarten.lankhorst@linux.intel.com>; Maxime Ripard <mripard@kernel.org>;
> Dmitry Baryshkov <lumag@kernel.org>; Abhinav Kumar
> <abhinav.kumar@linux.dev>; Jessica Zhang <jesszhan0024@gmail.com>; Sean
> Paul <sean@poorly.run>; Marijn Suijten <marijn.suijten@somainline.org>;
> Konrad Dybcio <konradybcio@kernel.org>; Lucas De Marchi
> <lucas.demarchi@intel.com>; Thomas Hellström
> <thomas.hellstrom@linux.intel.com>; Rodrigo Vivi <rodrigo.vivi@intel.com>;
> Vladimir Oltean <olteanv@gmail.com>; Andrew Lunn <andrew@lunn.ch>;
> David S. Miller <davem@davemloft.net>; Eric Dumazet
> <edumazet@google.com>; Jakub Kicinski <kuba@kernel.org>; Paolo Abeni
> <pabeni@redhat.com>; Tony Nguyen <anthony.l.nguyen@intel.com>;
> Przemek Kitszel <przemyslaw.kitszel@intel.com>; Krzysztof Wilczyński
> <kwilczynski@kernel.org>; Kishon Vijay Abraham I <kishon@kernel.org>;
> Bjorn Helgaas <bhelgaas@google.com>; Rodolfo Giometti
> <giometti@enneenne.com>; Richard Cochran <richardcochran@gmail.com>;
> Jonathan Lemon <jonathan.lemon@gmail.com>; Stefan Haberland
> <sth@linux.ibm.com>; Jan Hoeppner <hoeppner@linux.ibm.com>; Heiko
> Carstens <hca@linux.ibm.com>; Vasily Gorbik <gor@linux.ibm.com>;
> Alexander Gordeev <agordeev@linux.ibm.com>; Christian Borntraeger
> <borntraeger@linux.ibm.com>; Sven Schnelle <svens@linux.ibm.com>; Satish
> Kharat <satishkh@cisco.com>; Sesidhar Baddela <sebaddel@cisco.com>;
> James E.J. Bottomley <James.Bottomley@HansenPartnership.com>; Mauro
> Carvalho Chehab <mchehab@kernel.org>; Greg Kroah-Hartman
> <gregkh@linuxfoundation.org>; Xiubo Li <xiubli@redhat.com>; Ilya Dryomov
> <idryomov@gmail.com>; Masami Hiramatsu <mhiramat@kernel.org>;
> Mathieu Desnoyers <mathieu.desnoyers@efficios.com>; Andrew Morton
> <akpm@linux-foundation.org>
> Subject: [PATCH v2 05/21] drm/amdgpu: Switch to use %ptSp
>
> Use %ptSp instead of open coded variants to print content of struct
> timespec64 in human readable format.
>
> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>

Acked-by: Alex Deucher <alexander.deucher@amd.com>

> ---
>  drivers/gpu/drm/amd/amdgpu/amdgpu_dev_coredump.c | 3 +--
>  1 file changed, 1 insertion(+), 2 deletions(-)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_dev_coredump.c
> b/drivers/gpu/drm/amd/amdgpu/amdgpu_dev_coredump.c
> index 8a026bc9ea44..4e2fe6674db8 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_dev_coredump.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_dev_coredump.c
> @@ -217,8 +217,7 @@ amdgpu_devcoredump_read(char *buffer, loff_t
> offset, size_t count,
>       drm_printf(&p, "version: " AMDGPU_COREDUMP_VERSION "\n");
>       drm_printf(&p, "kernel: " UTS_RELEASE "\n");
>       drm_printf(&p, "module: " KBUILD_MODNAME "\n");
> -     drm_printf(&p, "time: %lld.%09ld\n", coredump->reset_time.tv_sec,
> -                coredump->reset_time.tv_nsec);
> +     drm_printf(&p, "time: %ptSp\n", &coredump->reset_time);
>
>       if (coredump->reset_task_info.task.pid)
>               drm_printf(&p, "process_name: %s PID: %d\n",
> --
> 2.50.1

Re: [PATCH v2 01/21] lib/vsprintf: Add specifier for printing struct timespec64

[Petr Mladek]

On Tue 2025-11-11 13:20:01, Andy Shevchenko wrote:
> A handful drivers want to print a content of the struct timespec64
> in a format of %lld:%09ld. In order to make their lives easier, add
> the respecting specifier directly to the printf() implementation.
> 
> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
> ---
>  Documentation/core-api/printk-formats.rst | 11 ++++++++--
>  lib/tests/printf_kunit.c                  |  4 ++++
>  lib/vsprintf.c                            | 25 +++++++++++++++++++++++
>  3 files changed, 38 insertions(+), 2 deletions(-)
> 
> diff --git a/Documentation/core-api/printk-formats.rst b/Documentation/core-api/printk-formats.rst
> index 7f2f11b48286..c0b1b6089307 100644
> --- a/Documentation/core-api/printk-formats.rst
> +++ b/Documentation/core-api/printk-formats.rst
> @@ -547,11 +547,13 @@ Time and date
>  	%pt[RT]s		YYYY-mm-dd HH:MM:SS
>  	%pt[RT]d		YYYY-mm-dd
>  	%pt[RT]t		HH:MM:SS
> -	%pt[RT][dt][r][s]
> +	%ptSp			<seconds>.<nanoseconds>

I know that that there was no good choice. But I am curious.
Does the 'p' stands for some particular word, for example, "plain" ?

I do not want to start bike shedding but I think about
using 'n' as "number".

> +	%pt[RST][dt][r][s]
>  
>  For printing date and time as represented by::
>  
> -	R  struct rtc_time structure
> +	R  content of struct rtc_time
> +	S  content of struct timespec64
>  	T  time64_t type
>  
>  in human readable format.
> @@ -563,6 +565,11 @@ The %pt[RT]s (space) will override ISO 8601 separator by using ' ' (space)
>  instead of 'T' (Capital T) between date and time. It won't have any effect
>  when date or time is omitted.
>  
> +The %ptSp is equivalent to %lld.%09ld for the content of the struct timespec64.
> +When the other specifiers are given, it becomes the respective equivalent of
> +%ptT[dt][r][s].%09ld. In other words, the seconds are being printed in
> +the human readable format followed by a dot and nanoseconds.
> +
>  Passed by reference.
>  
>  struct clk
> diff --git a/lib/vsprintf.c b/lib/vsprintf.c
> index 3f99834fd788..fdd06e8957a3 100644
> --- a/lib/vsprintf.c
> +++ b/lib/vsprintf.c
> @@ -2464,6 +2488,7 @@ early_param("no_hash_pointers", no_hash_pointers_enable);
>   * - 'g' For block_device name (gendisk + partition number)
>   * - 't[RT][dt][r][s]' For time and date as represented by:

We should add 'S' here as well:

   * - 't[RST][dt][r][s]' For time and date as represented by:

That said, I am not sure about the optional '[p]'. We could
either do:

   * - 't[RST][p][dt][r][s]' For time and date as represented by:

or

   * - 'tSp'	For time represented by struct timespec64 printed
		as seconds.nanoseconds
   * - 't[RST][dt][r][s]' For time and date as represented by:

>   *      R    struct rtc_time
> + *      S    struct timespec64
>   *      T    time64_t
>   * - 'C' For a clock, it prints the name (Common Clock Framework) or address
>   *       (legacy clock framework) of the clock

Otherwise, it looks good.

Best Regards,
Petr