The patch titled
Subject: mm, tracing: unify PFN format strings
has been added to the -mm tree. Its filename is
mm-tracing-unify-pfn-format-strings.patch
This patch should soon appear at
https://ozlabs.org/~akpm/mmots/broken-out/mm-tracing-unify-pfn-format-strings.patch
and later at
https://ozlabs.org/~akpm/mmotm/broken-out/mm-tracing-unify-pfn-format-strings.patch
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*** Remember to use Documentation/process/submit-checklist.rst when testing your code ***
The -mm tree is included into linux-next and is updated
there every 3-4 working days
------------------------------------------------------
From: Vincent Whitchurch <vincent.whitchurch@xxxxxxxx>
Subject: mm, tracing: unify PFN format strings
Some trace event formats print PFNs as hex while others print them as
decimal. This is rather annoying when attempting to grep through traces
to understand what's going on with a particular page.
$ git grep -ho 'pfn=[0x%lu]\+' include/trace/events/ | sort | uniq -c
11 pfn=0x%lx
12 pfn=%lu
2 pfn=%lx
Printing as hex is in the majority in the trace events, and all the normal
printks in mm/ also print PFNs as hex, so change all the PFN formats in
the trace events to use 0x%lx.
Link: https://lkml.kernel.org/r/20210602092608.1493-1-vincent.whitchurch@xxxxxxxx
Signed-off-by: Vincent Whitchurch <vincent.whitchurch@xxxxxxxx>
Cc: Steven Rostedt <rostedt@xxxxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxxxxx>
Cc: Jesper Dangaard Brouer <hawk@xxxxxxxxxx>
Cc: Ilias Apalodimas <ilias.apalodimas@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/trace/events/cma.h | 4 ++--
include/trace/events/filemap.h | 2 +-
include/trace/events/kmem.h | 12 ++++++------
include/trace/events/page_pool.h | 4 ++--
include/trace/events/pagemap.h | 4 ++--
include/trace/events/vmscan.h | 2 +-
6 files changed, 14 insertions(+), 14 deletions(-)
--- a/include/trace/events/cma.h~mm-tracing-unify-pfn-format-strings
+++ a/include/trace/events/cma.h
@@ -31,7 +31,7 @@ DECLARE_EVENT_CLASS(cma_alloc_class,
__entry->align = align;
),
- TP_printk("name=%s pfn=%lx page=%p count=%lu align=%u",
+ TP_printk("name=%s pfn=0x%lx page=%p count=%lu align=%u",
__get_str(name),
__entry->pfn,
__entry->page,
@@ -60,7 +60,7 @@ TRACE_EVENT(cma_release,
__entry->count = count;
),
- TP_printk("name=%s pfn=%lx page=%p count=%lu",
+ TP_printk("name=%s pfn=0x%lx page=%p count=%lu",
__get_str(name),
__entry->pfn,
__entry->page,
--- a/include/trace/events/filemap.h~mm-tracing-unify-pfn-format-strings
+++ a/include/trace/events/filemap.h
@@ -36,7 +36,7 @@ DECLARE_EVENT_CLASS(mm_filemap_op_page_c
__entry->s_dev = page->mapping->host->i_rdev;
),
- TP_printk("dev %d:%d ino %lx page=%p pfn=%lu ofs=%lu",
+ TP_printk("dev %d:%d ino %lx page=%p pfn=0x%lx ofs=%lu",
MAJOR(__entry->s_dev), MINOR(__entry->s_dev),
__entry->i_ino,
pfn_to_page(__entry->pfn),
--- a/include/trace/events/kmem.h~mm-tracing-unify-pfn-format-strings
+++ a/include/trace/events/kmem.h
@@ -173,7 +173,7 @@ TRACE_EVENT(mm_page_free,
__entry->order = order;
),
- TP_printk("page=%p pfn=%lu order=%d",
+ TP_printk("page=%p pfn=0x%lx order=%d",
pfn_to_page(__entry->pfn),
__entry->pfn,
__entry->order)
@@ -193,7 +193,7 @@ TRACE_EVENT(mm_page_free_batched,
__entry->pfn = page_to_pfn(page);
),
- TP_printk("page=%p pfn=%lu order=0",
+ TP_printk("page=%p pfn=0x%lx order=0",
pfn_to_page(__entry->pfn),
__entry->pfn)
);
@@ -219,7 +219,7 @@ TRACE_EVENT(mm_page_alloc,
__entry->migratetype = migratetype;
),
- TP_printk("page=%p pfn=%lu order=%d migratetype=%d gfp_flags=%s",
+ TP_printk("page=%p pfn=0x%lx order=%d migratetype=%d gfp_flags=%s",
__entry->pfn != -1UL ? pfn_to_page(__entry->pfn) : NULL,
__entry->pfn != -1UL ? __entry->pfn : 0,
__entry->order,
@@ -245,7 +245,7 @@ DECLARE_EVENT_CLASS(mm_page,
__entry->migratetype = migratetype;
),
- TP_printk("page=%p pfn=%lu order=%u migratetype=%d percpu_refill=%d",
+ TP_printk("page=%p pfn=0x%lx order=%u migratetype=%d percpu_refill=%d",
__entry->pfn != -1UL ? pfn_to_page(__entry->pfn) : NULL,
__entry->pfn != -1UL ? __entry->pfn : 0,
__entry->order,
@@ -278,7 +278,7 @@ TRACE_EVENT(mm_page_pcpu_drain,
__entry->migratetype = migratetype;
),
- TP_printk("page=%p pfn=%lu order=%d migratetype=%d",
+ TP_printk("page=%p pfn=0x%lx order=%d migratetype=%d",
pfn_to_page(__entry->pfn), __entry->pfn,
__entry->order, __entry->migratetype)
);
@@ -312,7 +312,7 @@ TRACE_EVENT(mm_page_alloc_extfrag,
get_pageblock_migratetype(page));
),
- TP_printk("page=%p pfn=%lu alloc_order=%d fallback_order=%d pageblock_order=%d alloc_migratetype=%d fallback_migratetype=%d fragmenting=%d change_ownership=%d",
+ TP_printk("page=%p pfn=0x%lx alloc_order=%d fallback_order=%d pageblock_order=%d alloc_migratetype=%d fallback_migratetype=%d fragmenting=%d change_ownership=%d",
pfn_to_page(__entry->pfn),
__entry->pfn,
__entry->alloc_order,
--- a/include/trace/events/pagemap.h~mm-tracing-unify-pfn-format-strings
+++ a/include/trace/events/pagemap.h
@@ -46,7 +46,7 @@ TRACE_EVENT(mm_lru_insertion,
),
/* Flag format is based on page-types.c formatting for pagemap */
- TP_printk("page=%p pfn=%lu lru=%d flags=%s%s%s%s%s%s",
+ TP_printk("page=%p pfn=0x%lx lru=%d flags=%s%s%s%s%s%s",
__entry->page,
__entry->pfn,
__entry->lru,
@@ -75,7 +75,7 @@ TRACE_EVENT(mm_lru_activate,
),
/* Flag format is based on page-types.c formatting for pagemap */
- TP_printk("page=%p pfn=%lu", __entry->page, __entry->pfn)
+ TP_printk("page=%p pfn=0x%lx", __entry->page, __entry->pfn)
);
--- a/include/trace/events/page_pool.h~mm-tracing-unify-pfn-format-strings
+++ a/include/trace/events/page_pool.h
@@ -60,7 +60,7 @@ TRACE_EVENT(page_pool_state_release,
__entry->pfn = page_to_pfn(page);
),
- TP_printk("page_pool=%p page=%p pfn=%lu release=%u",
+ TP_printk("page_pool=%p page=%p pfn=0x%lx release=%u",
__entry->pool, __entry->page, __entry->pfn, __entry->release)
);
@@ -85,7 +85,7 @@ TRACE_EVENT(page_pool_state_hold,
__entry->pfn = page_to_pfn(page);
),
- TP_printk("page_pool=%p page=%p pfn=%lu hold=%u",
+ TP_printk("page_pool=%p page=%p pfn=0x%lx hold=%u",
__entry->pool, __entry->page, __entry->pfn, __entry->hold)
);
--- a/include/trace/events/vmscan.h~mm-tracing-unify-pfn-format-strings
+++ a/include/trace/events/vmscan.h
@@ -330,7 +330,7 @@ TRACE_EVENT(mm_vmscan_writepage,
page_is_file_lru(page));
),
- TP_printk("page=%p pfn=%lu flags=%s",
+ TP_printk("page=%p pfn=0x%lx flags=%s",
pfn_to_page(__entry->pfn),
__entry->pfn,
show_reclaim_flags(__entry->reclaim_flags))
_
Patches currently in -mm which might be from vincent.whitchurch@xxxxxxxx are
squashfs-add-option-to-panic-on-errors.patch
mm-tracing-unify-pfn-format-strings.patch
