| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-ID: <20170105101613.GG21618@dhcp22.suse.cz>
Date: Thu, 5 Jan 2017 11:16:13 +0100
From: Michal Hocko <mhocko@...nel.org>
To: Minchan Kim <minchan@...nel.org>, Mel Gorman <mgorman@...e.de>
Cc: Andrew Morton <akpm@...ux-foundation.org>,
Johannes Weiner <hannes@...xchg.org>,
Vlastimil Babka <vbabka@...e.cz>,
Hillf Danton <hillf.zj@...baba-inc.com>, linux-mm@...ck.org,
LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 4/7] mm, vmscan: show LRU name in mm_vmscan_lru_isolate
tracepoint
On Thu 05-01-17 15:04:58, Minchan Kim wrote:
> On Wed, Jan 04, 2017 at 11:19:39AM +0100, Michal Hocko wrote:
> > From: Michal Hocko <mhocko@...e.com>
> >
> > mm_vmscan_lru_isolate currently prints only whether the LRU we isolate
> > from is file or anonymous but we do not know which LRU this is.
> >
> > It is useful to know whether the list is active or inactive, since we
> > are using the same function to isolate pages from both of them and it's
> > hard to distinguish otherwise.
> >
> > Chaneges since v1
> > - drop LRU_ prefix from names and use lowercase as per Vlastimil
> > - move and convert show_lru_name to mmflags.h EM magic as per Vlastimil
> >
> > Acked-by: Hillf Danton <hillf.zj@...baba-inc.com>
> > Acked-by: Mel Gorman <mgorman@...e.de>
> > Signed-off-by: Michal Hocko <mhocko@...e.com>
>
> > ---
> > include/trace/events/mmflags.h | 8 ++++++++
> > include/trace/events/vmscan.h | 12 ++++++------
> > mm/vmscan.c | 2 +-
> > 3 files changed, 15 insertions(+), 7 deletions(-)
> >
> > diff --git a/include/trace/events/mmflags.h b/include/trace/events/mmflags.h
> > index aa4caa6914a9..6172afa2fd82 100644
> > --- a/include/trace/events/mmflags.h
> > +++ b/include/trace/events/mmflags.h
> > @@ -240,6 +240,13 @@ IF_HAVE_VM_SOFTDIRTY(VM_SOFTDIRTY, "softdirty" ) \
> > IFDEF_ZONE_HIGHMEM( EM (ZONE_HIGHMEM,"HighMem")) \
> > EMe(ZONE_MOVABLE,"Movable")
> >
> > +#define LRU_NAMES \
> > + EM (LRU_INACTIVE_ANON, "inactive_anon") \
> > + EM (LRU_ACTIVE_ANON, "active_anon") \
> > + EM (LRU_INACTIVE_FILE, "inactive_file") \
> > + EM (LRU_ACTIVE_FILE, "active_file") \
> > + EMe(LRU_UNEVICTABLE, "unevictable")
> > +
> > /*
> > * First define the enums in the above macros to be exported to userspace
> > * via TRACE_DEFINE_ENUM().
> > @@ -253,6 +260,7 @@ COMPACTION_STATUS
> > COMPACTION_PRIORITY
> > COMPACTION_FEEDBACK
> > ZONE_TYPE
> > +LRU_NAMES
> >
> > /*
> > * Now redefine the EM() and EMe() macros to map the enums to the strings
> > diff --git a/include/trace/events/vmscan.h b/include/trace/events/vmscan.h
> > index 36c999f806bf..7ec59e0432c4 100644
> > --- a/include/trace/events/vmscan.h
> > +++ b/include/trace/events/vmscan.h
> > @@ -277,9 +277,9 @@ TRACE_EVENT(mm_vmscan_lru_isolate,
> > unsigned long nr_skipped,
> > unsigned long nr_taken,
> > isolate_mode_t isolate_mode,
> > - int file),
> > + int lru),
>
> It may break trace-vmscan-postprocess.pl. Other than that,
I wasn't aware of the script. And you are right it will break it. The
following should fix it. Btw. shrink_inactive_list tracepoint changes
will to be synced as well. I do not speak perl much but the following
should just work (untested yet).
---
diff --git a/Documentation/trace/postprocess/trace-vmscan-postprocess.pl b/Documentation/trace/postprocess/trace-vmscan-postprocess.pl
index 8f961ef2b457..ba976805853a 100644
--- a/Documentation/trace/postprocess/trace-vmscan-postprocess.pl
+++ b/Documentation/trace/postprocess/trace-vmscan-postprocess.pl
@@ -112,8 +112,8 @@ my $regex_direct_end_default = 'nr_reclaimed=([0-9]*)';
my $regex_kswapd_wake_default = 'nid=([0-9]*) order=([0-9]*)';
my $regex_kswapd_sleep_default = 'nid=([0-9]*)';
my $regex_wakeup_kswapd_default = 'nid=([0-9]*) zid=([0-9]*) order=([0-9]*)';
-my $regex_lru_isolate_default = 'isolate_mode=([0-9]*) order=([0-9]*) nr_requested=([0-9]*) nr_scanned=([0-9]*) nr_taken=([0-9]*) file=([0-9]*)';
-my $regex_lru_shrink_inactive_default = 'nid=([0-9]*) zid=([0-9]*) nr_scanned=([0-9]*) nr_reclaimed=([0-9]*) priority=([0-9]*) flags=([A-Z_|]*)';
+my $regex_lru_isolate_default = 'isolate_mode=([0-9]*) classzone_idx=([0-9]*) order=([0-9]*) nr_requested=([0-9]*) nr_scanned=([0-9]*) nr_skipped=([0-9]*) nr_taken=([0-9]*) lru=([a-z_]*)';
+my $regex_lru_shrink_inactive_default = 'nid=([0-9]*) nr_scanned=([0-9]*) nr_reclaimed=([0-9]*) nr_dirty=([0-9]*) nr_writeback=([0-9]*) nr_congested=([0-9]*) nr_immediate=([0-9]*) nr_activate=([0-9]*) nr_ref_keep=([0-9]*) nr_unmap_fail=([0-9]*) priority=([0-9]*) flags=([A-Z_|]*)';
my $regex_lru_shrink_active_default = 'lru=([A-Z_]*) nr_scanned=([0-9]*) nr_rotated=([0-9]*) priority=([0-9]*)';
my $regex_writepage_default = 'page=([0-9a-f]*) pfn=([0-9]*) flags=([A-Z_|]*)';
@@ -205,15 +205,15 @@ $regex_wakeup_kswapd = generate_traceevent_regex(
$regex_lru_isolate = generate_traceevent_regex(
"vmscan/mm_vmscan_lru_isolate",
$regex_lru_isolate_default,
- "isolate_mode", "order",
- "nr_requested", "nr_scanned", "nr_taken",
- "file");
+ "isolate_mode", "classzone_idx", "order",
+ "nr_requested", "nr_scanned", "nr_skipped", "nr_taken",
+ "lru");
$regex_lru_shrink_inactive = generate_traceevent_regex(
"vmscan/mm_vmscan_lru_shrink_inactive",
$regex_lru_shrink_inactive_default,
- "nid", "zid",
- "nr_scanned", "nr_reclaimed", "priority",
- "flags");
+ "nid", "nr_scanned", "nr_reclaimed", "nr_dirty", "nr_writeback",
+ "nr_congested", "nr_immediate", "nr_activate", "nr_ref_keep",
+ "nr_unmap_fail", "priority", "flags");
$regex_lru_shrink_active = generate_traceevent_regex(
"vmscan/mm_vmscan_lru_shrink_active",
$regex_lru_shrink_active_default,
@@ -381,8 +381,8 @@ sub process_events {
next;
}
my $isolate_mode = $1;
- my $nr_scanned = $4;
- my $file = $6;
+ my $nr_scanned = $5;
+ my $file = $8;
# To closer match vmstat scanning statistics, only count isolate_both
# and isolate_inactive as scanning. isolate_active is rotation
@@ -391,7 +391,7 @@ sub process_events {
# isolate_both == 3
if ($isolate_mode != 2) {
$perprocesspid{$process_pid}->{HIGH_NR_SCANNED} += $nr_scanned;
- if ($file == 1) {
+ if ($file =~ /_file/) {
$perprocesspid{$process_pid}->{HIGH_NR_FILE_SCANNED} += $nr_scanned;
} else {
$perprocesspid{$process_pid}->{HIGH_NR_ANON_SCANNED} += $nr_scanned;
@@ -406,8 +406,8 @@ sub process_events {
next;
}
- my $nr_reclaimed = $4;
- my $flags = $6;
+ my $nr_reclaimed = $3;
+ my $flags = $12;
my $file = 0;
if ($flags =~ /RECLAIM_WB_FILE/) {
$file = 1;
> Acked-by: Minchan Kim <minchan@...nel.org>
Thanks
--
Michal Hocko
SUSE Labs
Powered by blists - more mailing lists