Merge tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-nextgrafted

Pull networking updates from Jakub Kicinski:
 "Core:

   - Add dedicated kmem_cache for typical/small skb->head, avoid having
     to access struct page at kfree time, and improve memory use.

   - Introduce sysctl to set default RPS configuration for new netdevs.

   - Define Netlink protocol specification format which can be used to
     describe messages used by each family and auto-generate parsers.
     Add tools for generating kernel data structures and uAPI headers.

   - Expose all net/core sysctls inside netns.

   - Remove 4s sleep in netpoll if carrier is instantly detected on
     boot.

   - Add configurable limit of MDB entries per port, and port-vlan.

   - Continue populating drop reasons throughout the stack.

   - Retire a handful of legacy Qdiscs and classifiers.

  Protocols:

   - Support IPv4 big TCP (TSO frames larger than 64kB).

   - Add IP_LOCAL_PORT_RANGE socket option, to control local port range
     on socket by socket basis.

   - Track and report in procfs number of MPTCP sockets used.

   - Support mixing IPv4 and IPv6 flows in the in-kernel MPTCP path
     manager.

   - IPv6: don't check net.ipv6.route.max_size and rely on garbage
     collection to free memory (similarly to IPv4).

   - Support Penultimate Segment Pop (PSP) flavor in SRv6 (RFC8986).

   - ICMP: add per-rate limit counters.

   - Add support for user scanning requests in ieee802154.

   - Remove static WEP support.

   - Support minimal Wi-Fi 7 Extremely High Throughput (EHT) rate
     reporting.

   - WiFi 7 EHT channel puncturing support (client & AP).

  BPF:

   - Add a rbtree data structure following the "next-gen data structure"
     precedent set by recently added linked list, that is, by using
     kfunc + kptr instead of adding a new BPF map type.

   - Expose XDP hints via kfuncs with initial support for RX hash and
     timestamp metadata.

   - Add BPF_F_NO_TUNNEL_KEY extension to bpf_skb_set_tunnel_key to
     better support decap on GRE tunnel devices not operating in collect
     metadata.

   - Improve x86 JIT's codegen for PROBE_MEM runtime error checks.

   - Remove the need for trace_printk_lock for bpf_trace_printk and
     bpf_trace_vprintk helpers.

   - Extend libbpf's bpf_tracing.h support for tracing arguments of
     kprobes/uprobes and syscall as a special case.

   - Significantly reduce the search time for module symbols by
     livepatch and BPF.

   - Enable cpumasks to be used as kptrs, which is useful for tracing
     programs tracking which tasks end up running on which CPUs in
     different time intervals.

   - Add support for BPF trampoline on s390x and riscv64.

   - Add capability to export the XDP features supported by the NIC.

   - Add __bpf_kfunc tag for marking kernel functions as kfuncs.

   - Add cgroup.memory=nobpf kernel parameter option to disable BPF
     memory accounting for container environments.

  Netfilter:

   - Remove the CLUSTERIP target. It has been marked as obsolete for
     years, and we still have WARN splats wrt races of the out-of-band
     /proc interface installed by this target.

   - Add 'destroy' commands to nf_tables. They are identical to the
     existing 'delete' commands, but do not return an error if the
     referenced object (set, chain, rule...) did not exist.

  Driver API:

   - Improve cpumask_local_spread() locality to help NICs set the right
     IRQ affinity on AMD platforms.

   - Separate C22 and C45 MDIO bus transactions more clearly.

   - Introduce new DCB table to control DSCP rewrite on egress.

   - Support configuration of Physical Layer Collision Avoidance (PLCA)
     Reconciliation Sublayer (RS) (802.3cg-2019). Modern version of
     shared medium Ethernet.

   - Support for MAC Merge layer (IEEE 802.3-2018 clause 99). Allowing
     preemption of low priority frames by high priority frames.

   - Add support for controlling MACSec offload using netlink SET.

   - Rework devlink instance refcounts to allow registration and
     de-registration under the instance lock. Split the code into
     multiple files, drop some of the unnecessarily granular locks and
     factor out common parts of netlink operation handling.

   - Add TX frame aggregation parameters (for USB drivers).

   - Add a new attr TCA_EXT_WARN_MSG to report TC (offload) warning
     messages with notifications for debug.

   - Allow offloading of UDP NEW connections via act_ct.

   - Add support for per action HW stats in TC.

   - Support hardware miss to TC action (continue processing in SW from
     a specific point in the action chain).

   - Warn if old Wireless Extension user space interface is used with
     modern cfg80211/mac80211 drivers. Do not support Wireless
     Extensions for Wi-Fi 7 devices at all. Everyone should switch to
     using nl80211 interface instead.

   - Improve the CAN bit timing configuration. Use extack to return
     error messages directly to user space, update the SJW handling,
     including the definition of a new default value that will benefit
     CAN-FD controllers, by increasing their oscillator tolerance.

  New hardware / drivers:

   - Ethernet:
      - nVidia BlueField-3 support (control traffic driver)
      - Ethernet support for imx93 SoCs
      - Motorcomm yt8531 gigabit Ethernet PHY
      - onsemi NCN26000 10BASE-T1S PHY (with support for PLCA)
      - Microchip LAN8841 PHY (incl. cable diagnostics and PTP)
      - Amlogic gxl MDIO mux

   - WiFi:
      - RealTek RTL8188EU (rtl8xxxu)
      - Qualcomm Wi-Fi 7 devices (ath12k)

   - CAN:
      - Renesas R-Car V4H

  Drivers:

   - Bluetooth:
      - Set Per Platform Antenna Gain (PPAG) for Intel controllers.

   - Ethernet NICs:
      - Intel (1G, igc):
         - support TSN / Qbv / packet scheduling features of i226 model
      - Intel (100G, ice):
         - use GNSS subsystem instead of TTY
         - multi-buffer XDP support
         - extend support for GPIO pins to E823 devices
      - nVidia/Mellanox:
         - update the shared buffer configuration on PFC commands
         - implement PTP adjphase function for HW offset control
         - TC support for Geneve and GRE with VF tunnel offload
         - more efficient crypto key management method
         - multi-port eswitch support
      - Netronome/Corigine:
         - add DCB IEEE support
         - support IPsec offloading for NFP3800
      - Freescale/NXP (enetc):
         - support XDP_REDIRECT for XDP non-linear buffers
         - improve reconfig, avoid link flap and waiting for idle
         - support MAC Merge layer
      - Other NICs:
         - sfc/ef100: add basic devlink support for ef100
         - ionic: rx_push mode operation (writing descriptors via MMIO)
         - bnxt: use the auxiliary bus abstraction for RDMA
         - r8169: disable ASPM and reset bus in case of tx timeout
         - cpsw: support QSGMII mode for J721e CPSW9G
         - cpts: support pulse-per-second output
         - ngbe: add an mdio bus driver
         - usbnet: optimize usbnet_bh() by avoiding unnecessary queuing
         - r8152: handle devices with FW with NCM support
         - amd-xgbe: support 10Mbps, 2.5GbE speeds and rx-adaptation
         - virtio-net: support multi buffer XDP
         - virtio/vsock: replace virtio_vsock_pkt with sk_buff
         - tsnep: XDP support

   - Ethernet high-speed switches:
      - nVidia/Mellanox (mlxsw):
         - add support for latency TLV (in FW control messages)
      - Microchip (sparx5):
         - separate explicit and implicit traffic forwarding rules, make
           the implicit rules always active
         - add support for egress DSCP rewrite
         - IS0 VCAP support (Ingress Classification)
         - IS2 VCAP filters (protos, L3 addrs, L4 ports, flags, ToS
           etc.)
         - ES2 VCAP support (Egress Access Control)
         - support for Per-Stream Filtering and Policing (802.1Q,
           8.6.5.1)

   - Ethernet embedded switches:
      - Marvell (mv88e6xxx):
         - add MAB (port auth) offload support
         - enable PTP receive for mv88e6390
      - NXP (ocelot):
         - support MAC Merge layer
         - support for the the vsc7512 internal copper phys
      - Microchip:
         - lan9303: convert to PHYLINK
         - lan966x: support TC flower filter statistics
         - lan937x: PTP support for KSZ9563/KSZ8563 and LAN937x
         - lan937x: support Credit Based Shaper configuration
         - ksz9477: support Energy Efficient Ethernet
      - other:
         - qca8k: convert to regmap read/write API, use bulk operations
         - rswitch: Improve TX timestamp accuracy

   - Intel WiFi (iwlwifi):
      - EHT (Wi-Fi 7) rate reporting
      - STEP equalizer support: transfer some STEP (connection to radio
        on platforms with integrated wifi) related parameters from the
        BIOS to the firmware.

   - Qualcomm 802.11ax WiFi (ath11k):
      - IPQ5018 support
      - Fine Timing Measurement (FTM) responder role support
      - channel 177 support

   - MediaTek WiFi (mt76):
      - per-PHY LED support
      - mt7996: EHT (Wi-Fi 7) support
      - Wireless Ethernet Dispatch (WED) reset support
      - switch to using page pool allocator

   - RealTek WiFi (rtw89):
      - support new version of Bluetooth co-existance

   - Mobile:
      - rmnet: support TX aggregation"

* tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1872 commits)
  page_pool: add a comment explaining the fragment counter usage
  net: ethtool: fix __ethtool_dev_mm_supported() implementation
  ethtool: pse-pd: Fix double word in comments
  xsk: add linux/vmalloc.h to xsk.c
  sefltests: netdevsim: wait for devlink instance after netns removal
  selftest: fib_tests: Always cleanup before exit
  net/mlx5e: Align IPsec ASO result memory to be as required by hardware
  net/mlx5e: TC, Set CT miss to the specific ct action instance
  net/mlx5e: Rename CHAIN_TO_REG to MAPPED_OBJ_TO_REG
  net/mlx5: Refactor tc miss handling to a single function
  net/mlx5: Kconfig: Make tc offload depend on tc skb extension
  net/sched: flower: Support hardware miss to tc action
  net/sched: flower: Move filter handle initialization earlier
  net/sched: cls_api: Support hardware miss to tc action
  net/sched: Rename user cookie and act cookie
  sfc: fix builds without CONFIG_RTC_LIB
  sfc: clean up some inconsistent indentings
  net/mlx4_en: Introduce flexible array to silence overflow warning
  net: lan966x: Fix possible deadlock inside PTP
  net/ulp: Remove redundant ->clone() test in inet_clone_ulp().
  ...

1 files changed, 758 insertions, 0 deletions

diff --git a/Documentation/trace/postprocess/trace-vmscan-postprocess.pl b/Documentation/trace/postprocess/trace-vmscan-postprocess.pl
new file mode 100644
index 000000000..2f4e39875
--- /dev/null
+++ b/Documentation/trace/postprocess/trace-vmscan-postprocess.pl
@@ -0,0 +1,758 @@
+#!/usr/bin/env perl
+# This is a POC for reading the text representation of trace output related to
+# page reclaim. It makes an attempt to extract some high-level information on
+# what is going on. The accuracy of the parser may vary
+#
+# Example usage: trace-vmscan-postprocess.pl < /sys/kernel/debug/tracing/trace_pipe
+# other options
+#   --read-procstat	If the trace lacks process info, get it from /proc
+#   --ignore-pid	Aggregate processes of the same name together
+#
+# Copyright (c) IBM Corporation 2009
+# Author: Mel Gorman <mel@csn.ul.ie>
+use strict;
+use Getopt::Long;
+
+# Tracepoint events
+use constant MM_VMSCAN_DIRECT_RECLAIM_BEGIN	=> 1;
+use constant MM_VMSCAN_DIRECT_RECLAIM_END	=> 2;
+use constant MM_VMSCAN_KSWAPD_WAKE		=> 3;
+use constant MM_VMSCAN_KSWAPD_SLEEP		=> 4;
+use constant MM_VMSCAN_LRU_SHRINK_ACTIVE	=> 5;
+use constant MM_VMSCAN_LRU_SHRINK_INACTIVE	=> 6;
+use constant MM_VMSCAN_LRU_ISOLATE		=> 7;
+use constant MM_VMSCAN_WRITEPAGE_FILE_SYNC	=> 8;
+use constant MM_VMSCAN_WRITEPAGE_ANON_SYNC	=> 9;
+use constant MM_VMSCAN_WRITEPAGE_FILE_ASYNC	=> 10;
+use constant MM_VMSCAN_WRITEPAGE_ANON_ASYNC	=> 11;
+use constant MM_VMSCAN_WRITEPAGE_ASYNC		=> 12;
+use constant EVENT_UNKNOWN			=> 13;
+
+# Per-order events
+use constant MM_VMSCAN_DIRECT_RECLAIM_BEGIN_PERORDER => 11;
+use constant MM_VMSCAN_WAKEUP_KSWAPD_PERORDER 	=> 12;
+use constant MM_VMSCAN_KSWAPD_WAKE_PERORDER	=> 13;
+use constant HIGH_KSWAPD_REWAKEUP_PERORDER	=> 14;
+
+# Constants used to track state
+use constant STATE_DIRECT_BEGIN 		=> 15;
+use constant STATE_DIRECT_ORDER 		=> 16;
+use constant STATE_KSWAPD_BEGIN			=> 17;
+use constant STATE_KSWAPD_ORDER			=> 18;
+
+# High-level events extrapolated from tracepoints
+use constant HIGH_DIRECT_RECLAIM_LATENCY	=> 19;
+use constant HIGH_KSWAPD_LATENCY		=> 20;
+use constant HIGH_KSWAPD_REWAKEUP		=> 21;
+use constant HIGH_NR_SCANNED			=> 22;
+use constant HIGH_NR_TAKEN			=> 23;
+use constant HIGH_NR_RECLAIMED			=> 24;
+use constant HIGH_NR_FILE_SCANNED		=> 25;
+use constant HIGH_NR_ANON_SCANNED		=> 26;
+use constant HIGH_NR_FILE_RECLAIMED		=> 27;
+use constant HIGH_NR_ANON_RECLAIMED		=> 28;
+
+my %perprocesspid;
+my %perprocess;
+my %last_procmap;
+my $opt_ignorepid;
+my $opt_read_procstat;
+
+my $total_wakeup_kswapd;
+my ($total_direct_reclaim, $total_direct_nr_scanned);
+my ($total_direct_nr_file_scanned, $total_direct_nr_anon_scanned);
+my ($total_direct_latency, $total_kswapd_latency);
+my ($total_direct_nr_reclaimed);
+my ($total_direct_nr_file_reclaimed, $total_direct_nr_anon_reclaimed);
+my ($total_direct_writepage_file_sync, $total_direct_writepage_file_async);
+my ($total_direct_writepage_anon_sync, $total_direct_writepage_anon_async);
+my ($total_kswapd_nr_scanned, $total_kswapd_wake);
+my ($total_kswapd_nr_file_scanned, $total_kswapd_nr_anon_scanned);
+my ($total_kswapd_writepage_file_sync, $total_kswapd_writepage_file_async);
+my ($total_kswapd_writepage_anon_sync, $total_kswapd_writepage_anon_async);
+my ($total_kswapd_nr_reclaimed);
+my ($total_kswapd_nr_file_reclaimed, $total_kswapd_nr_anon_reclaimed);
+
+# Catch sigint and exit on request
+my $sigint_report = 0;
+my $sigint_exit = 0;
+my $sigint_pending = 0;
+my $sigint_received = 0;
+sub sigint_handler {
+	my $current_time = time;
+	if ($current_time - 2 > $sigint_received) {
+		print "SIGINT received, report pending. Hit ctrl-c again to exit\n";
+		$sigint_report = 1;
+	} else {
+		if (!$sigint_exit) {
+			print "Second SIGINT received quickly, exiting\n";
+		}
+		$sigint_exit++;
+	}
+
+	if ($sigint_exit > 3) {
+		print "Many SIGINTs received, exiting now without report\n";
+		exit;
+	}
+
+	$sigint_received = $current_time;
+	$sigint_pending = 1;
+}
+$SIG{INT} = "sigint_handler";
+
+# Parse command line options
+GetOptions(
+	'ignore-pid'	 =>	\$opt_ignorepid,
+	'read-procstat'	 =>	\$opt_read_procstat,
+);
+
+# Defaults for dynamically discovered regex's
+my $regex_direct_begin_default = 'order=([0-9]*) may_writepage=([0-9]*) gfp_flags=([A-Z_|]*)';
+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]*) gfp_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_anon=([0-9]*) nr_activate_file=([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_|]*)';
+
+# Dyanically discovered regex
+my $regex_direct_begin;
+my $regex_direct_end;
+my $regex_kswapd_wake;
+my $regex_kswapd_sleep;
+my $regex_wakeup_kswapd;
+my $regex_lru_isolate;
+my $regex_lru_shrink_inactive;
+my $regex_lru_shrink_active;
+my $regex_writepage;
+
+# Static regex used. Specified like this for readability and for use with /o
+#                      (process_pid)     (cpus      )   ( time  )   (tpoint    ) (details)
+my $regex_traceevent = '\s*([a-zA-Z0-9-]*)\s*(\[[0-9]*\])(\s*[dX.][Nnp.][Hhs.][0-9a-fA-F.]*|)\s*([0-9.]*):\s*([a-zA-Z_]*):\s*(.*)';
+my $regex_statname = '[-0-9]*\s\((.*)\).*';
+my $regex_statppid = '[-0-9]*\s\(.*\)\s[A-Za-z]\s([0-9]*).*';
+
+sub generate_traceevent_regex {
+	my $event = shift;
+	my $default = shift;
+	my $regex;
+
+	# Read the event format or use the default
+	if (!open (FORMAT, "/sys/kernel/debug/tracing/events/$event/format")) {
+		print("WARNING: Event $event format string not found\n");
+		return $default;
+	} else {
+		my $line;
+		while (!eof(FORMAT)) {
+			$line = <FORMAT>;
+			$line =~ s/, REC->.*//;
+			if ($line =~ /^print fmt:\s"(.*)".*/) {
+				$regex = $1;
+				$regex =~ s/%s/\([0-9a-zA-Z|_]*\)/g;
+				$regex =~ s/%p/\([0-9a-f]*\)/g;
+				$regex =~ s/%d/\([-0-9]*\)/g;
+				$regex =~ s/%ld/\([-0-9]*\)/g;
+				$regex =~ s/%lu/\([0-9]*\)/g;
+			}
+		}
+	}
+
+	# Can't handle the print_flags stuff but in the context of this
+	# script, it really doesn't matter
+	$regex =~ s/\(REC.*\) \? __print_flags.*//;
+
+	# Verify fields are in the right order
+	my $tuple;
+	foreach $tuple (split /\s/, $regex) {
+		my ($key, $value) = split(/=/, $tuple);
+		my $expected = shift;
+		if ($key ne $expected) {
+			print("WARNING: Format not as expected for event $event '$key' != '$expected'\n");
+			$regex =~ s/$key=\((.*)\)/$key=$1/;
+		}
+	}
+
+	if (defined shift) {
+		die("Fewer fields than expected in format");
+	}
+
+	return $regex;
+}
+
+$regex_direct_begin = generate_traceevent_regex(
+			"vmscan/mm_vmscan_direct_reclaim_begin",
+			$regex_direct_begin_default,
+			"order", "may_writepage",
+			"gfp_flags");
+$regex_direct_end = generate_traceevent_regex(
+			"vmscan/mm_vmscan_direct_reclaim_end",
+			$regex_direct_end_default,
+			"nr_reclaimed");
+$regex_kswapd_wake = generate_traceevent_regex(
+			"vmscan/mm_vmscan_kswapd_wake",
+			$regex_kswapd_wake_default,
+			"nid", "order");
+$regex_kswapd_sleep = generate_traceevent_regex(
+			"vmscan/mm_vmscan_kswapd_sleep",
+			$regex_kswapd_sleep_default,
+			"nid");
+$regex_wakeup_kswapd = generate_traceevent_regex(
+			"vmscan/mm_vmscan_wakeup_kswapd",
+			$regex_wakeup_kswapd_default,
+			"nid", "zid", "order", "gfp_flags");
+$regex_lru_isolate = generate_traceevent_regex(
+			"vmscan/mm_vmscan_lru_isolate",
+			$regex_lru_isolate_default,
+			"isolate_mode", "classzone_idx", "order",
+			"nr_requested", "nr_scanned", "nr_skipped", "nr_taken",
+			"lru");
+$regex_lru_shrink_inactive = generate_traceevent_regex(
+			"vmscan/mm_vmscan_lru_shrink_inactive",
+			$regex_lru_shrink_inactive_default,
+			"nid", "nr_scanned", "nr_reclaimed", "nr_dirty", "nr_writeback",
+			"nr_congested", "nr_immediate", "nr_activate_anon",
+			"nr_activate_file", "nr_ref_keep",
+			"nr_unmap_fail", "priority", "flags");
+$regex_lru_shrink_active = generate_traceevent_regex(
+			"vmscan/mm_vmscan_lru_shrink_active",
+			$regex_lru_shrink_active_default,
+			"nid", "zid",
+			"lru",
+			"nr_scanned", "nr_rotated", "priority");
+$regex_writepage = generate_traceevent_regex(
+			"vmscan/mm_vmscan_writepage",
+			$regex_writepage_default,
+			"page", "pfn", "flags");
+
+sub read_statline($) {
+	my $pid = $_[0];
+	my $statline;
+
+	if (open(STAT, "/proc/$pid/stat")) {
+		$statline = <STAT>;
+		close(STAT);
+	}
+
+	if ($statline eq '') {
+		$statline = "-1 (UNKNOWN_PROCESS_NAME) R 0";
+	}
+
+	return $statline;
+}
+
+sub guess_process_pid($$) {
+	my $pid = $_[0];
+	my $statline = $_[1];
+
+	if ($pid == 0) {
+		return "swapper-0";
+	}
+
+	if ($statline !~ /$regex_statname/o) {
+		die("Failed to math stat line for process name :: $statline");
+	}
+	return "$1-$pid";
+}
+
+# Convert sec.usec timestamp format
+sub timestamp_to_ms($) {
+	my $timestamp = $_[0];
+
+	my ($sec, $usec) = split (/\./, $timestamp);
+	return ($sec * 1000) + ($usec / 1000);
+}
+
+sub process_events {
+	my $traceevent;
+	my $process_pid;
+	my $cpus;
+	my $timestamp;
+	my $tracepoint;
+	my $details;
+	my $statline;
+
+	# Read each line of the event log
+EVENT_PROCESS:
+	while ($traceevent = <STDIN>) {
+		if ($traceevent =~ /$regex_traceevent/o) {
+			$process_pid = $1;
+			$timestamp = $4;
+			$tracepoint = $5;
+
+			$process_pid =~ /(.*)-([0-9]*)$/;
+			my $process = $1;
+			my $pid = $2;
+
+			if ($process eq "") {
+				$process = $last_procmap{$pid};
+				$process_pid = "$process-$pid";
+			}
+			$last_procmap{$pid} = $process;
+
+			if ($opt_read_procstat) {
+				$statline = read_statline($pid);
+				if ($opt_read_procstat && $process eq '') {
+					$process_pid = guess_process_pid($pid, $statline);
+				}
+			}
+		} else {
+			next;
+		}
+
+		# Perl Switch() sucks majorly
+		if ($tracepoint eq "mm_vmscan_direct_reclaim_begin") {
+			$timestamp = timestamp_to_ms($timestamp);
+			$perprocesspid{$process_pid}->{MM_VMSCAN_DIRECT_RECLAIM_BEGIN}++;
+			$perprocesspid{$process_pid}->{STATE_DIRECT_BEGIN} = $timestamp;
+
+			$details = $6;
+			if ($details !~ /$regex_direct_begin/o) {
+				print "WARNING: Failed to parse mm_vmscan_direct_reclaim_begin as expected\n";
+				print "         $details\n";
+				print "         $regex_direct_begin\n";
+				next;
+			}
+			my $order = $1;
+			$perprocesspid{$process_pid}->{MM_VMSCAN_DIRECT_RECLAIM_BEGIN_PERORDER}[$order]++;
+			$perprocesspid{$process_pid}->{STATE_DIRECT_ORDER} = $order;
+		} elsif ($tracepoint eq "mm_vmscan_direct_reclaim_end") {
+			# Count the event itself
+			my $index = $perprocesspid{$process_pid}->{MM_VMSCAN_DIRECT_RECLAIM_END};
+			$perprocesspid{$process_pid}->{MM_VMSCAN_DIRECT_RECLAIM_END}++;
+
+			# Record how long direct reclaim took this time
+			if (defined $perprocesspid{$process_pid}->{STATE_DIRECT_BEGIN}) {
+				$timestamp = timestamp_to_ms($timestamp);
+				my $order = $perprocesspid{$process_pid}->{STATE_DIRECT_ORDER};
+				my $latency = ($timestamp - $perprocesspid{$process_pid}->{STATE_DIRECT_BEGIN});
+				$perprocesspid{$process_pid}->{HIGH_DIRECT_RECLAIM_LATENCY}[$index] = "$order-$latency";
+			}
+		} elsif ($tracepoint eq "mm_vmscan_kswapd_wake") {
+			$details = $6;
+			if ($details !~ /$regex_kswapd_wake/o) {
+				print "WARNING: Failed to parse mm_vmscan_kswapd_wake as expected\n";
+				print "         $details\n";
+				print "         $regex_kswapd_wake\n";
+				next;
+			}
+
+			my $order = $2;
+			$perprocesspid{$process_pid}->{STATE_KSWAPD_ORDER} = $order;
+			if (!$perprocesspid{$process_pid}->{STATE_KSWAPD_BEGIN}) {
+				$timestamp = timestamp_to_ms($timestamp);
+				$perprocesspid{$process_pid}->{MM_VMSCAN_KSWAPD_WAKE}++;
+				$perprocesspid{$process_pid}->{STATE_KSWAPD_BEGIN} = $timestamp;
+				$perprocesspid{$process_pid}->{MM_VMSCAN_KSWAPD_WAKE_PERORDER}[$order]++;
+			} else {
+				$perprocesspid{$process_pid}->{HIGH_KSWAPD_REWAKEUP}++;
+				$perprocesspid{$process_pid}->{HIGH_KSWAPD_REWAKEUP_PERORDER}[$order]++;
+			}
+		} elsif ($tracepoint eq "mm_vmscan_kswapd_sleep") {
+
+			# Count the event itself
+			my $index = $perprocesspid{$process_pid}->{MM_VMSCAN_KSWAPD_SLEEP};
+			$perprocesspid{$process_pid}->{MM_VMSCAN_KSWAPD_SLEEP}++;
+
+			# Record how long kswapd was awake
+			$timestamp = timestamp_to_ms($timestamp);
+			my $order = $perprocesspid{$process_pid}->{STATE_KSWAPD_ORDER};
+			my $latency = ($timestamp - $perprocesspid{$process_pid}->{STATE_KSWAPD_BEGIN});
+			$perprocesspid{$process_pid}->{HIGH_KSWAPD_LATENCY}[$index] = "$order-$latency";
+			$perprocesspid{$process_pid}->{STATE_KSWAPD_BEGIN} = 0;
+		} elsif ($tracepoint eq "mm_vmscan_wakeup_kswapd") {
+			$perprocesspid{$process_pid}->{MM_VMSCAN_WAKEUP_KSWAPD}++;
+
+			$details = $6;
+			if ($details !~ /$regex_wakeup_kswapd/o) {
+				print "WARNING: Failed to parse mm_vmscan_wakeup_kswapd as expected\n";
+				print "         $details\n";
+				print "         $regex_wakeup_kswapd\n";
+				next;
+			}
+			my $order = $3;
+			$perprocesspid{$process_pid}->{MM_VMSCAN_WAKEUP_KSWAPD_PERORDER}[$order]++;
+		} elsif ($tracepoint eq "mm_vmscan_lru_isolate") {
+			$details = $6;
+			if ($details !~ /$regex_lru_isolate/o) {
+				print "WARNING: Failed to parse mm_vmscan_lru_isolate as expected\n";
+				print "         $details\n";
+				print "         $regex_lru_isolate/o\n";
+				next;
+			}
+			my $isolate_mode = $1;
+			my $nr_scanned = $5;
+			my $file = $8;
+
+			# To closer match vmstat scanning statistics, only count isolate_both
+			# and isolate_inactive as scanning. isolate_active is rotation
+			# isolate_inactive == 1
+			# isolate_active   == 2
+			# isolate_both     == 3
+			if ($isolate_mode != 2) {
+				$perprocesspid{$process_pid}->{HIGH_NR_SCANNED} += $nr_scanned;
+				if ($file =~ /_file/) {
+					$perprocesspid{$process_pid}->{HIGH_NR_FILE_SCANNED} += $nr_scanned;
+				} else {
+					$perprocesspid{$process_pid}->{HIGH_NR_ANON_SCANNED} += $nr_scanned;
+				}
+			}
+		} elsif ($tracepoint eq "mm_vmscan_lru_shrink_inactive") {
+			$details = $6;
+			if ($details !~ /$regex_lru_shrink_inactive/o) {
+				print "WARNING: Failed to parse mm_vmscan_lru_shrink_inactive as expected\n";
+				print "         $details\n";
+				print "         $regex_lru_shrink_inactive/o\n";
+				next;
+			}
+
+			my $nr_reclaimed = $3;
+			my $flags = $13;
+			my $file = 0;
+			if ($flags =~ /RECLAIM_WB_FILE/) {
+				$file = 1;
+			}
+			$perprocesspid{$process_pid}->{HIGH_NR_RECLAIMED} += $nr_reclaimed;
+			if ($file) {
+				$perprocesspid{$process_pid}->{HIGH_NR_FILE_RECLAIMED} += $nr_reclaimed;
+			} else {
+				$perprocesspid{$process_pid}->{HIGH_NR_ANON_RECLAIMED} += $nr_reclaimed;
+			}
+		} elsif ($tracepoint eq "mm_vmscan_writepage") {
+			$details = $6;
+			if ($details !~ /$regex_writepage/o) {
+				print "WARNING: Failed to parse mm_vmscan_writepage as expected\n";
+				print "         $details\n";
+				print "         $regex_writepage\n";
+				next;
+			}
+
+			my $flags = $3;
+			my $file = 0;
+			my $sync_io = 0;
+			if ($flags =~ /RECLAIM_WB_FILE/) {
+				$file = 1;
+			}
+			if ($flags =~ /RECLAIM_WB_SYNC/) {
+				$sync_io = 1;
+			}
+			if ($sync_io) {
+				if ($file) {
+					$perprocesspid{$process_pid}->{MM_VMSCAN_WRITEPAGE_FILE_SYNC}++;
+				} else {
+					$perprocesspid{$process_pid}->{MM_VMSCAN_WRITEPAGE_ANON_SYNC}++;
+				}
+			} else {
+				if ($file) {
+					$perprocesspid{$process_pid}->{MM_VMSCAN_WRITEPAGE_FILE_ASYNC}++;
+				} else {
+					$perprocesspid{$process_pid}->{MM_VMSCAN_WRITEPAGE_ANON_ASYNC}++;
+				}
+			}
+		} else {
+			$perprocesspid{$process_pid}->{EVENT_UNKNOWN}++;
+		}
+
+		if ($sigint_pending) {
+			last EVENT_PROCESS;
+		}
+	}
+}
+
+sub dump_stats {
+	my $hashref = shift;
+	my %stats = %$hashref;
+
+	# Dump per-process stats
+	my $process_pid;
+	my $max_strlen = 0;
+
+	# Get the maximum process name
+	foreach $process_pid (keys %perprocesspid) {
+		my $len = length($process_pid);
+		if ($len > $max_strlen) {
+			$max_strlen = $len;
+		}
+	}
+	$max_strlen += 2;
+
+	# Work out latencies
+	printf("\n") if !$opt_ignorepid;
+	printf("Reclaim latencies expressed as order-latency_in_ms\n") if !$opt_ignorepid;
+	foreach $process_pid (keys %stats) {
+
+		if (!$stats{$process_pid}->{HIGH_DIRECT_RECLAIM_LATENCY}[0] &&
+				!$stats{$process_pid}->{HIGH_KSWAPD_LATENCY}[0]) {
+			next;
+		}
+
+		printf "%-" . $max_strlen . "s ", $process_pid if !$opt_ignorepid;
+		my $index = 0;
+		while (defined $stats{$process_pid}->{HIGH_DIRECT_RECLAIM_LATENCY}[$index] ||
+			defined $stats{$process_pid}->{HIGH_KSWAPD_LATENCY}[$index]) {
+
+			if ($stats{$process_pid}->{HIGH_DIRECT_RECLAIM_LATENCY}[$index]) {
+				printf("%s ", $stats{$process_pid}->{HIGH_DIRECT_RECLAIM_LATENCY}[$index]) if !$opt_ignorepid;
+				my ($dummy, $latency) = split(/-/, $stats{$process_pid}->{HIGH_DIRECT_RECLAIM_LATENCY}[$index]);
+				$total_direct_latency += $latency;
+			} else {
+				printf("%s ", $stats{$process_pid}->{HIGH_KSWAPD_LATENCY}[$index]) if !$opt_ignorepid;
+				my ($dummy, $latency) = split(/-/, $stats{$process_pid}->{HIGH_KSWAPD_LATENCY}[$index]);
+				$total_kswapd_latency += $latency;
+			}
+			$index++;
+		}
+		print "\n" if !$opt_ignorepid;
+	}
+
+	# Print out process activity
+	printf("\n");
+	printf("%-" . $max_strlen . "s %8s %10s   %8s %8s  %8s %8s %8s %8s\n", "Process", "Direct",  "Wokeup", "Pages",   "Pages",   "Pages",   "Pages",     "Time");
+	printf("%-" . $max_strlen . "s %8s %10s   %8s %8s  %8s %8s %8s %8s\n", "details", "Rclms",   "Kswapd", "Scanned", "Rclmed",  "Sync-IO", "ASync-IO",  "Stalled");
+	foreach $process_pid (keys %stats) {
+
+		if (!$stats{$process_pid}->{MM_VMSCAN_DIRECT_RECLAIM_BEGIN}) {
+			next;
+		}
+
+		$total_direct_reclaim += $stats{$process_pid}->{MM_VMSCAN_DIRECT_RECLAIM_BEGIN};
+		$total_wakeup_kswapd += $stats{$process_pid}->{MM_VMSCAN_WAKEUP_KSWAPD};
+		$total_direct_nr_scanned += $stats{$process_pid}->{HIGH_NR_SCANNED};
+		$total_direct_nr_file_scanned += $stats{$process_pid}->{HIGH_NR_FILE_SCANNED};
+		$total_direct_nr_anon_scanned += $stats{$process_pid}->{HIGH_NR_ANON_SCANNED};
+		$total_direct_nr_reclaimed += $stats{$process_pid}->{HIGH_NR_RECLAIMED};
+		$total_direct_nr_file_reclaimed += $stats{$process_pid}->{HIGH_NR_FILE_RECLAIMED};
+		$total_direct_nr_anon_reclaimed += $stats{$process_pid}->{HIGH_NR_ANON_RECLAIMED};
+		$total_direct_writepage_file_sync += $stats{$process_pid}->{MM_VMSCAN_WRITEPAGE_FILE_SYNC};
+		$total_direct_writepage_anon_sync += $stats{$process_pid}->{MM_VMSCAN_WRITEPAGE_ANON_SYNC};
+		$total_direct_writepage_file_async += $stats{$process_pid}->{MM_VMSCAN_WRITEPAGE_FILE_ASYNC};
+
+		$total_direct_writepage_anon_async += $stats{$process_pid}->{MM_VMSCAN_WRITEPAGE_ANON_ASYNC};
+
+		my $index = 0;
+		my $this_reclaim_delay = 0;
+		while (defined $stats{$process_pid}->{HIGH_DIRECT_RECLAIM_LATENCY}[$index]) {
+			 my ($dummy, $latency) = split(/-/, $stats{$process_pid}->{HIGH_DIRECT_RECLAIM_LATENCY}[$index]);
+			$this_reclaim_delay += $latency;
+			$index++;
+		}
+
+		printf("%-" . $max_strlen . "s %8d %10d   %8u %8u  %8u %8u %8.3f",
+			$process_pid,
+			$stats{$process_pid}->{MM_VMSCAN_DIRECT_RECLAIM_BEGIN},
+			$stats{$process_pid}->{MM_VMSCAN_WAKEUP_KSWAPD},
+			$stats{$process_pid}->{HIGH_NR_SCANNED},
+			$stats{$process_pid}->{HIGH_NR_FILE_SCANNED},
+			$stats{$process_pid}->{HIGH_NR_ANON_SCANNED},
+			$stats{$process_pid}->{HIGH_NR_RECLAIMED},
+			$stats{$process_pid}->{HIGH_NR_FILE_RECLAIMED},
+			$stats{$process_pid}->{HIGH_NR_ANON_RECLAIMED},
+			$stats{$process_pid}->{MM_VMSCAN_WRITEPAGE_FILE_SYNC} + $stats{$process_pid}->{MM_VMSCAN_WRITEPAGE_ANON_SYNC},
+			$stats{$process_pid}->{MM_VMSCAN_WRITEPAGE_FILE_ASYNC} + $stats{$process_pid}->{MM_VMSCAN_WRITEPAGE_ANON_ASYNC},
+			$this_reclaim_delay / 1000);
+
+		if ($stats{$process_pid}->{MM_VMSCAN_DIRECT_RECLAIM_BEGIN}) {
+			print "      ";
+			for (my $order = 0; $order < 20; $order++) {
+				my $count = $stats{$process_pid}->{MM_VMSCAN_DIRECT_RECLAIM_BEGIN_PERORDER}[$order];
+				if ($count != 0) {
+					print "direct-$order=$count ";
+				}
+			}
+		}
+		if ($stats{$process_pid}->{MM_VMSCAN_WAKEUP_KSWAPD}) {
+			print "      ";
+			for (my $order = 0; $order < 20; $order++) {
+				my $count = $stats{$process_pid}->{MM_VMSCAN_WAKEUP_KSWAPD_PERORDER}[$order];
+				if ($count != 0) {
+					print "wakeup-$order=$count ";
+				}
+			}
+		}
+
+		print "\n";
+	}
+
+	# Print out kswapd activity
+	printf("\n");
+	printf("%-" . $max_strlen . "s %8s %10s   %8s   %8s %8s %8s\n", "Kswapd",   "Kswapd",  "Order",     "Pages",   "Pages",   "Pages",  "Pages");
+	printf("%-" . $max_strlen . "s %8s %10s   %8s   %8s %8s %8s\n", "Instance", "Wakeups", "Re-wakeup", "Scanned", "Rclmed",  "Sync-IO", "ASync-IO");
+	foreach $process_pid (keys %stats) {
+
+		if (!$stats{$process_pid}->{MM_VMSCAN_KSWAPD_WAKE}) {
+			next;
+		}
+
+		$total_kswapd_wake += $stats{$process_pid}->{MM_VMSCAN_KSWAPD_WAKE};
+		$total_kswapd_nr_scanned += $stats{$process_pid}->{HIGH_NR_SCANNED};
+		$total_kswapd_nr_file_scanned += $stats{$process_pid}->{HIGH_NR_FILE_SCANNED};
+		$total_kswapd_nr_anon_scanned += $stats{$process_pid}->{HIGH_NR_ANON_SCANNED};
+		$total_kswapd_nr_reclaimed += $stats{$process_pid}->{HIGH_NR_RECLAIMED};
+		$total_kswapd_nr_file_reclaimed += $stats{$process_pid}->{HIGH_NR_FILE_RECLAIMED};
+		$total_kswapd_nr_anon_reclaimed += $stats{$process_pid}->{HIGH_NR_ANON_RECLAIMED};
+		$total_kswapd_writepage_file_sync += $stats{$process_pid}->{MM_VMSCAN_WRITEPAGE_FILE_SYNC};
+		$total_kswapd_writepage_anon_sync += $stats{$process_pid}->{MM_VMSCAN_WRITEPAGE_ANON_SYNC};
+		$total_kswapd_writepage_file_async += $stats{$process_pid}->{MM_VMSCAN_WRITEPAGE_FILE_ASYNC};
+		$total_kswapd_writepage_anon_async += $stats{$process_pid}->{MM_VMSCAN_WRITEPAGE_ANON_ASYNC};
+
+		printf("%-" . $max_strlen . "s %8d %10d   %8u %8u  %8i %8u",
+			$process_pid,
+			$stats{$process_pid}->{MM_VMSCAN_KSWAPD_WAKE},
+			$stats{$process_pid}->{HIGH_KSWAPD_REWAKEUP},
+			$stats{$process_pid}->{HIGH_NR_SCANNED},
+			$stats{$process_pid}->{HIGH_NR_FILE_SCANNED},
+			$stats{$process_pid}->{HIGH_NR_ANON_SCANNED},
+			$stats{$process_pid}->{HIGH_NR_RECLAIMED},
+			$stats{$process_pid}->{HIGH_NR_FILE_RECLAIMED},
+			$stats{$process_pid}->{HIGH_NR_ANON_RECLAIMED},
+			$stats{$process_pid}->{MM_VMSCAN_WRITEPAGE_FILE_SYNC} + $stats{$process_pid}->{MM_VMSCAN_WRITEPAGE_ANON_SYNC},
+			$stats{$process_pid}->{MM_VMSCAN_WRITEPAGE_FILE_ASYNC} + $stats{$process_pid}->{MM_VMSCAN_WRITEPAGE_ANON_ASYNC});
+
+		if ($stats{$process_pid}->{MM_VMSCAN_KSWAPD_WAKE}) {
+			print "      ";
+			for (my $order = 0; $order < 20; $order++) {
+				my $count = $stats{$process_pid}->{MM_VMSCAN_KSWAPD_WAKE_PERORDER}[$order];
+				if ($count != 0) {
+					print "wake-$order=$count ";
+				}
+			}
+		}
+		if ($stats{$process_pid}->{HIGH_KSWAPD_REWAKEUP}) {
+			print "      ";
+			for (my $order = 0; $order < 20; $order++) {
+				my $count = $stats{$process_pid}->{HIGH_KSWAPD_REWAKEUP_PERORDER}[$order];
+				if ($count != 0) {
+					print "rewake-$order=$count ";
+				}
+			}
+		}
+		printf("\n");
+	}
+
+	# Print out summaries
+	$total_direct_latency /= 1000;
+	$total_kswapd_latency /= 1000;
+	print "\nSummary\n";
+	print "Direct reclaims:     			$total_direct_reclaim\n";
+	print "Direct reclaim pages scanned:		$total_direct_nr_scanned\n";
+	print "Direct reclaim file pages scanned:	$total_direct_nr_file_scanned\n";
+	print "Direct reclaim anon pages scanned:	$total_direct_nr_anon_scanned\n";
+	print "Direct reclaim pages reclaimed:		$total_direct_nr_reclaimed\n";
+	print "Direct reclaim file pages reclaimed:	$total_direct_nr_file_reclaimed\n";
+	print "Direct reclaim anon pages reclaimed:	$total_direct_nr_anon_reclaimed\n";
+	print "Direct reclaim write file sync I/O:	$total_direct_writepage_file_sync\n";
+	print "Direct reclaim write anon sync I/O:	$total_direct_writepage_anon_sync\n";
+	print "Direct reclaim write file async I/O:	$total_direct_writepage_file_async\n";
+	print "Direct reclaim write anon async I/O:	$total_direct_writepage_anon_async\n";
+	print "Wake kswapd requests:			$total_wakeup_kswapd\n";
+	printf "Time stalled direct reclaim: 		%-1.2f seconds\n", $total_direct_latency;
+	print "\n";
+	print "Kswapd wakeups:				$total_kswapd_wake\n";
+	print "Kswapd pages scanned:			$total_kswapd_nr_scanned\n";
+	print "Kswapd file pages scanned:		$total_kswapd_nr_file_scanned\n";
+	print "Kswapd anon pages scanned:		$total_kswapd_nr_anon_scanned\n";
+	print "Kswapd pages reclaimed:			$total_kswapd_nr_reclaimed\n";
+	print "Kswapd file pages reclaimed:		$total_kswapd_nr_file_reclaimed\n";
+	print "Kswapd anon pages reclaimed:		$total_kswapd_nr_anon_reclaimed\n";
+	print "Kswapd reclaim write file sync I/O:	$total_kswapd_writepage_file_sync\n";
+	print "Kswapd reclaim write anon sync I/O:	$total_kswapd_writepage_anon_sync\n";
+	print "Kswapd reclaim write file async I/O:	$total_kswapd_writepage_file_async\n";
+	print "Kswapd reclaim write anon async I/O:	$total_kswapd_writepage_anon_async\n";
+	printf "Time kswapd awake:			%-1.2f seconds\n", $total_kswapd_latency;
+}
+
+sub aggregate_perprocesspid() {
+	my $process_pid;
+	my $process;
+	undef %perprocess;
+
+	foreach $process_pid (keys %perprocesspid) {
+		$process = $process_pid;
+		$process =~ s/-([0-9])*$//;
+		if ($process eq '') {
+			$process = "NO_PROCESS_NAME";
+		}
+
+		$perprocess{$process}->{MM_VMSCAN_DIRECT_RECLAIM_BEGIN} += $perprocesspid{$process_pid}->{MM_VMSCAN_DIRECT_RECLAIM_BEGIN};
+		$perprocess{$process}->{MM_VMSCAN_KSWAPD_WAKE} += $perprocesspid{$process_pid}->{MM_VMSCAN_KSWAPD_WAKE};
+		$perprocess{$process}->{MM_VMSCAN_WAKEUP_KSWAPD} += $perprocesspid{$process_pid}->{MM_VMSCAN_WAKEUP_KSWAPD};
+		$perprocess{$process}->{HIGH_KSWAPD_REWAKEUP} += $perprocesspid{$process_pid}->{HIGH_KSWAPD_REWAKEUP};
+		$perprocess{$process}->{HIGH_NR_SCANNED} += $perprocesspid{$process_pid}->{HIGH_NR_SCANNED};
+		$perprocess{$process}->{HIGH_NR_FILE_SCANNED} += $perprocesspid{$process_pid}->{HIGH_NR_FILE_SCANNED};
+		$perprocess{$process}->{HIGH_NR_ANON_SCANNED} += $perprocesspid{$process_pid}->{HIGH_NR_ANON_SCANNED};
+		$perprocess{$process}->{HIGH_NR_RECLAIMED} += $perprocesspid{$process_pid}->{HIGH_NR_RECLAIMED};
+		$perprocess{$process}->{HIGH_NR_FILE_RECLAIMED} += $perprocesspid{$process_pid}->{HIGH_NR_FILE_RECLAIMED};
+		$perprocess{$process}->{HIGH_NR_ANON_RECLAIMED} += $perprocesspid{$process_pid}->{HIGH_NR_ANON_RECLAIMED};
+		$perprocess{$process}->{MM_VMSCAN_WRITEPAGE_FILE_SYNC} += $perprocesspid{$process_pid}->{MM_VMSCAN_WRITEPAGE_FILE_SYNC};
+		$perprocess{$process}->{MM_VMSCAN_WRITEPAGE_ANON_SYNC} += $perprocesspid{$process_pid}->{MM_VMSCAN_WRITEPAGE_ANON_SYNC};
+		$perprocess{$process}->{MM_VMSCAN_WRITEPAGE_FILE_ASYNC} += $perprocesspid{$process_pid}->{MM_VMSCAN_WRITEPAGE_FILE_ASYNC};
+		$perprocess{$process}->{MM_VMSCAN_WRITEPAGE_ANON_ASYNC} += $perprocesspid{$process_pid}->{MM_VMSCAN_WRITEPAGE_ANON_ASYNC};
+
+		for (my $order = 0; $order < 20; $order++) {
+			$perprocess{$process}->{MM_VMSCAN_DIRECT_RECLAIM_BEGIN_PERORDER}[$order] += $perprocesspid{$process_pid}->{MM_VMSCAN_DIRECT_RECLAIM_BEGIN_PERORDER}[$order];
+			$perprocess{$process}->{MM_VMSCAN_WAKEUP_KSWAPD_PERORDER}[$order] += $perprocesspid{$process_pid}->{MM_VMSCAN_WAKEUP_KSWAPD_PERORDER}[$order];
+			$perprocess{$process}->{MM_VMSCAN_KSWAPD_WAKE_PERORDER}[$order] += $perprocesspid{$process_pid}->{MM_VMSCAN_KSWAPD_WAKE_PERORDER}[$order];
+
+		}
+
+		# Aggregate direct reclaim latencies
+		my $wr_index = $perprocess{$process}->{MM_VMSCAN_DIRECT_RECLAIM_END};
+		my $rd_index = 0;
+		while (defined $perprocesspid{$process_pid}->{HIGH_DIRECT_RECLAIM_LATENCY}[$rd_index]) {
+			$perprocess{$process}->{HIGH_DIRECT_RECLAIM_LATENCY}[$wr_index] = $perprocesspid{$process_pid}->{HIGH_DIRECT_RECLAIM_LATENCY}[$rd_index];
+			$rd_index++;
+			$wr_index++;
+		}
+		$perprocess{$process}->{MM_VMSCAN_DIRECT_RECLAIM_END} = $wr_index;
+
+		# Aggregate kswapd latencies
+		my $wr_index = $perprocess{$process}->{MM_VMSCAN_KSWAPD_SLEEP};
+		my $rd_index = 0;
+		while (defined $perprocesspid{$process_pid}->{HIGH_KSWAPD_LATENCY}[$rd_index]) {
+			$perprocess{$process}->{HIGH_KSWAPD_LATENCY}[$wr_index] = $perprocesspid{$process_pid}->{HIGH_KSWAPD_LATENCY}[$rd_index];
+			$rd_index++;
+			$wr_index++;
+		}
+		$perprocess{$process}->{MM_VMSCAN_DIRECT_RECLAIM_END} = $wr_index;
+	}
+}
+
+sub report() {
+	if (!$opt_ignorepid) {
+		dump_stats(\%perprocesspid);
+	} else {
+		aggregate_perprocesspid();
+		dump_stats(\%perprocess);
+	}
+}
+
+# Process events or signals until neither is available
+sub signal_loop() {
+	my $sigint_processed;
+	do {
+		$sigint_processed = 0;
+		process_events();
+
+		# Handle pending signals if any
+		if ($sigint_pending) {
+			my $current_time = time;
+
+			if ($sigint_exit) {
+				print "Received exit signal\n";
+				$sigint_pending = 0;
+			}
+			if ($sigint_report) {
+				if ($current_time >= $sigint_received + 2) {
+					report();
+					$sigint_report = 0;
+					$sigint_pending = 0;
+					$sigint_processed = 1;
+				}
+			}
+		}
+	} while ($sigint_pending || $sigint_processed);
+}
+
+signal_loop();
+report();