Getting the age of the (last) lines your commits are touching

LinesAgeBeforeCommit

What is the age of the lines my patches are touching?

Apply all your patches in a local branch of linux-next, but be aware that some commands
are executed on remotes/linux-next/master while other on the branch with the changes.

1 - Get git diff. -U0 is very important here
#### On the branch with the changes ####
$ git diff -U0 remotes/linux-next/master > /tmp/1.patch

2 - Get rid of useless lines
$ cat 1.patch |grep "\(diff\|@@\)" > /tmp/2.txt

3 - Parse 2.txt with:
-- // --
#!/usr/bin/perl
use strict;
use File::Slurp;

my $theInput = read_file("/tmp/2.txt");

my $file;
my $lineNumber;
my $buf;
foreach my $line (split("\n", $theInput)){
	if ($line =~ "^diff"){
		print "git blame $file -L $lineNumber,$lineNumber\n";
#		print "$file:$lineNumber\n";
		($file) = $line =~ /diff\s--git\sa\/(.*)\s/;
	} else {
		($lineNumber) = $line =~ /@@.*\-([0-9]*).*/;
	}
}
-- // --
$ parser1.pl > /tmp/runme.sh
$ chmod +x /tmp/runme.sh

4 - Run the runme.sh script
#### On the master branch ####
$ cd /path/to/linux-next
$ git checkout remotes/linux-next/master
$ /tmp/runme.sh > /tmp/3.txt

4 - Parse 3.txt with:
-- // --
#!/usr/bin/perl
use strict;
use File::Slurp;
use DateTime;
use DateTime::Format::Duration;

my $d2 = DateTime->new(year => 2014, month => 5, day => 18);

my $theInput = read_file("/tmp/3.txt");

foreach my $line (split("\n", $theInput)){
	my ($year) = $line =~ /([0-9]*)\-[0-9]*\-[0-9]*/;
	my ($month) = $line =~ /[0-9]*\-([0-9]*)\-[0-9]*/;
	my ($day) = $line =~ /[0-9]*\-[0-9]*\-([0-9]*)/;
	my $d1 = DateTime->new(year => $year, month => $month, day => $day);

	my $dur = ($d1 > $d2 ? ($d1->subtract_datetime_absolute($d2)) : 
	                       ($d2->subtract_datetime_absolute($d1)));
	my $f = DateTime::Format::Duration->new(pattern => 
	  '%Y years, %m months, %e days, %H hours, %M minutes, %S seconds');

	my $dayCount = $d1->delta_days($d2)->delta_days;
	print "$year-$month-$day,$dayCount\n";
}
-- // --
### Delete empty lines on /tmp/3.txt ###
$ /tmp/parser2.pl > /tmp/out1.csv

5 - Open out1.csv in spreadsheet app to calculate average, min and max
   Hint: There is a commented line on parser.pl which can be uncommented to
   print file:line which can make the spreadsheet look good.

output_example

arch/arc/kernel/kprobes.c:386,2013-01-22,481
arch/arm/mach-imx/iomux-imx31.c:65,2008-07-05,2143
arch/arm/mach-omap2/omap_hwmod.c:871,2009-09-03,1718
arch/arm/mach-orion5x/ts78xx-setup.c:457,2009-02-06,1927
arch/arm/mach-s3c24xx/mach-osiris-dvs.c:90,2009-11-13,1647
arch/ia64/kernel/perfmon_default_smpl.c:60,2005-04-16,3319
arch/mips/sibyte/bcm1480/setup.c:79,2007-10-11,2411
arch/powerpc/oprofile/op_model_cell.c:1126,2007-07-20,2494
arch/powerpc/platforms/83xx/usb.c:252,2008-01-08,2322
arch/powerpc/platforms/cell/ras.c:237,2007-04-23,2582
drivers/clk/samsung/clk-s3c2410-dclk.c:81,2014-05-09,9
drivers/crypto/caam/caamalg.c:801,2011-07-15,1038
drivers/crypto/caam/ctrl.c:301,2012-06-22,695
drivers/crypto/nx/nx-842.c:748,2012-07-19,668
drivers/crypto/ux500/hash/hash_core.c:1363,2012-04-30,748
drivers/firmware/efi/efi-pstore.c:262,2013-02-08,464
drivers/gpu/drm/drm_crtc.c:2659,2011-11-14,916
drivers/gpu/drm/i810/i810_dma.c:881,2005-09-25,3157
drivers/gpu/drm/i915/i915_debugfs.c:2654,2013-11-01,198
drivers/gpu/drm/i915/intel_sprite.c:756,2012-01-03,866
drivers/gpu/drm/msm/msm_drv.c:738,2013-07-19,303
drivers/gpu/drm/nouveau/nouveau_bios.c:2048,2009-12-11,1619
drivers/gpu/drm/omapdrm/omap_drv.c:439,2011-11-12,918
drivers/gpu/drm/tegra/dpaux.c:262,2013-11-15,184
drivers/i2c/busses/i2c-s3c2410.c:565,2005-04-16,3319
drivers/infiniband/core/cache.c:248,2006-06-17,2892
drivers/infiniband/hw/amso1100/c2.c:867,2006-09-22,2795
drivers/infiniband/hw/ehca/ehca_mrmw.c:2112,2007-07-12,2502
drivers/infiniband/hw/ipath/ipath_file_ops.c:2157,2006-03-29,2972
drivers/infiniband/hw/ipath/ipath_iba6110.c:1455,2006-03-29,2972
drivers/infiniband/hw/nes/nes_cm.c:3014,2008-02-04,2295
drivers/infiniband/hw/nes/nes_nic.c:1029,2008-02-04,2295
drivers/infiniband/hw/nes/nes_utils.c:79,2011-09-25,966
drivers/infiniband/hw/qib/qib_file_ops.c:1892,2010-05-23,1456
drivers/infiniband/hw/qib/qib_iba7322.c:6954,2010-05-23,1456
drivers/infiniband/hw/qib/qib_qp.c:1347,2013-06-15,337
drivers/mailbox/omap-mailbox.c:88,2006-12-07,2719
drivers/md/bcache/debug.c:251,2013-03-23,421
drivers/media/i2c/s5k5baf.c:1341,2013-12-05,164
drivers/media/media-devnode.c:204,2009-12-09,1621
drivers/media/pci/saa7164/saa7164-api.c:736,2010-07-31,1387
drivers/media/platform/davinci/vpbe.c:541,2011-06-17,1066
drivers/media/platform/davinci/vpfe_capture.c:951,2009-07-06,1777
drivers/media/platform/exynos4-is/fimc-isp-video.c:338,2013-12-20,149
drivers/media/platform/exynos4-is/fimc-lite.c:1228,2012-04-27,751
drivers/media/rc/fintek-cir.c:664,2011-05-25,1089
drivers/media/rc/ite-cir.c:1684,2011-03-16,1159
drivers/media/rc/nuvoton-cir.c:1198,2010-10-07,1319
drivers/media/tuners/mt2060.c:243,2006-04-17,2953
drivers/media/tuners/mt2266.c:243,2007-07-25,2489
drivers/media/usb/cpia2/cpia2_usb.c:478,2006-02-27,3002
drivers/mfd/arizona-core.c:93,2012-06-19,698
drivers/mfd/htc-i2cpld.c:361,2010-01-19,1580
drivers/mfd/pcf50633-irq.c:75,2010-05-12,1467
drivers/mmc/core/sdio_bus.c:195,2010-10-02,1324
drivers/mmc/host/sdhci.c:2745,2011-10-03,958
drivers/mtd/mtdpart.c:588,2010-09-17,1339
drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c:1395,2011-06-14,1069
drivers/net/ethernet/freescale/ucc_geth_ethtool.c:264,2007-07-19,2495
drivers/net/ethernet/intel/i40e/i40e_dcb.c:369,2014-01-17,121
drivers/net/ethernet/neterion/vxge/vxge-config.c:142,2010-12-10,1255
drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_hw.c:3088,2013-01-01,502
drivers/net/ethernet/ti/davinci_cpdma.c:466,2010-09-15,1341
drivers/net/irda/mcs7780.c:690,2006-05-25,2915
drivers/net/irda/via-ircc.c:986,2005-04-16,3319
drivers/net/wireless/ath/ath5k/eeprom.c:1733,2009-04-30,1844
drivers/net/wireless/ath/wcn36xx/main.c:964,2013-10-08,222
drivers/net/wireless/cw1200/cw1200_spi.c:282,2013-09-23,237
drivers/net/wireless/cw1200/sta.c:2309,2013-05-24,359
drivers/net/wireless/ipw2x00/ipw2200.c:10807,2005-03-25,3341
drivers/net/wireless/iwlegacy/3945-mac.c:247,2011-02-21,1182
drivers/net/wireless/iwlegacy/4965-mac.c:3388,2011-08-30,992
drivers/net/wireless/iwlegacy/4965.c:450,2011-02-21,1182
drivers/net/wireless/mwifiex/scan.c:1368,2011-03-21,1154
drivers/net/wireless/rt2x00/rt2800lib.c:7966,2010-06-29,1419
drivers/pcmcia/pcmcia_resource.c:420,2010-01-17,1582
drivers/pinctrl/pinctrl-adi2.c:440,2013-09-03,257
drivers/pinctrl/pinctrl-nomadik.c:1494,2012-12-17,517
drivers/power/pm2301_charger.c:479,2012-05-14,734
drivers/powercap/intel_rapl.c:1123,2013-10-17,213
drivers/powercap/powercap_sys.c:338,2013-10-11,219
drivers/rtc/interface.c:958,2010-09-23,1333
drivers/s390/cio/eadm_sch.c:359,2012-08-28,628
drivers/scsi/bnx2i/bnx2i_iscsi.c:2107,2010-07-01,1417
drivers/scsi/isci/request.c:3527,2011-05-10,1104
drivers/scsi/lpfc/lpfc_scsi.c:1956,2012-01-18,851
drivers/scsi/megaraid/megaraid_sas_fusion.c:875,2010-12-21,1244
drivers/scsi/sun3_scsi_vme.c:565,2005-04-16,3319
drivers/staging/gdm72xx/gdm_wimax.c:191,2012-05-15,733
drivers/staging/lustre/lustre/ptlrpc/gss/gss_generic_token.c:295,2013-05-02,381
drivers/staging/media/as102/as102_usb_drv.c:470,2011-10-31,930
drivers/staging/rtl8188eu/core/rtw_ap.c:1833,2013-08-21,270
drivers/staging/rtl8188eu/core/rtw_ieee80211.c:654,2013-08-21,270
drivers/staging/rtl8188eu/core/rtw_mlme_ext.c:1733,2013-08-21,270
drivers/staging/rtl8188eu/core/rtw_recv.c:1743,2013-08-21,270
drivers/staging/rtl8188eu/os_dep/ioctl_linux.c:5503,2013-08-21,270
drivers/staging/rtl8188eu/os_dep/os_intfs.c:818,2013-08-21,270
drivers/staging/rtl8192e/rtl8192e/r8192E_phy.c:790,2011-08-25,997
drivers/staging/rtl8192e/rtl8192e/rtl_core.c:712,2011-08-25,997
drivers/staging/rtl8192e/rtl8192e/rtl_wx.c:1122,2011-08-25,997
drivers/staging/rtl8192e/rtllib_softmac.c:3262,2011-08-23,999
drivers/staging/rtl8192e/rtllib_softmac_wx.c:660,2009-08-04,1748
drivers/staging/rtl8192u/ieee80211/ieee80211_softmac.c:2869,2009-11-03,1657
drivers/staging/rtl8192u/ieee80211/ieee80211_softmac_wx.c:593,2009-11-03,1657
drivers/staging/rtl8192u/ieee80211/rtl819x_HTProc.c:418,2009-11-03,1657
drivers/staging/rtl8192u/r8192U_core.c:2178,2009-11-03,1657
drivers/staging/rtl8192u/r819xU_phy.c:1061,2010-11-14,1281
drivers/staging/rtl8712/ieee80211.c:367,2010-08-20,1367
drivers/staging/rtl8712/os_intfs.c:309,2010-08-20,1367
drivers/staging/rtl8712/rtl8712_recv.c:438,2010-08-20,1367
drivers/staging/rtl8712/rtl871x_ioctl_linux.c:1688,2010-08-20,1367
drivers/staging/rtl8712/rtl871x_mlme.c:1235,2010-08-20,1367
drivers/staging/rtl8712/rtl871x_recv.c:656,2010-08-20,1367
drivers/staging/rtl8723au/core/rtw_ap.c:1842,2014-03-28,51
drivers/staging/rtl8723au/core/rtw_ieee80211.c:646,2014-03-28,51
drivers/staging/rtl8723au/core/rtw_recv.c:1619,2014-03-28,51
drivers/staging/rtl8723au/os_dep/ioctl_cfg80211.c:3284,2014-03-28,51
drivers/staging/rtl8723au/os_dep/os_intfs.c:428,2014-03-28,51
drivers/staging/tidspbridge/rmgr/proc.c:671,2010-06-23,1425
drivers/staging/vt6655/hostap.c:666,2009-04-25,1849
drivers/staging/vt6655/wpactl.c:791,2013-03-18,426
drivers/staging/vt6656/hostap.c:662,2009-06-13,1800
drivers/staging/wlags49_h2/wl_priv.c:1698,2012-11-30,534
drivers/tty/mxser.c:810,2008-02-07,2292
drivers/tty/serial/mrst_max3110.c:437,2010-06-16,1432
drivers/tty/tty_ldisc.c:77,2008-07-22,2126
drivers/uio/uio_dmem_genirq.c:74,2012-09-25,600
drivers/usb/dwc2/gadget.c:2554,2010-03-29,1511
drivers/usb/gadget/fotg210-udc.c:523,2013-05-30,353
drivers/usb/misc/sisusbvga/sisusb.c:1925,2005-04-16,3319
drivers/uwb/rsv.c:632,2008-12-12,1983
drivers/video/fbdev/pxa168fb.c:600,2009-02-11,1922
drivers/virt/fsl_hypervisor.c:700,2011-06-09,1074
fs/btrfs/dir-item.c:113,2007-11-16,2375
fs/btrfs/disk-io.c:3908,2011-01-06,1228
fs/btrfs/extent_map.c:439,2007-08-27,2456
fs/btrfs/tree-log.c:232,2009-03-24,1881
fs/jfs/jfs_metapage.c:572,2006-05-24,2916
fs/proc/kcore.c:157,2009-09-22,1699
fs/reiserfs/journal.c:1662,2005-07-12,3232
kernel/debug/debug_core.c:267,2009-12-11,1619
kernel/sched/core.c:7492,2013-11-07,192
mm/rmap.c:1399,2008-10-18,2038
net/9p/mod.c:180,2007-07-10,2504
net/rds/ib_recv.c:1046,2009-02-24,1909
net/rds/iw_rdma.c:545,2009-02-24,1909
net/sunrpc/xprtrdma/svc_rdma_transport.c:621,2007-12-12,2349
sound/ppc/snd_ps3.c:686,2009-06-10,1803
sound/soc/codecs/wm8971.c:675,2008-09-10,2076
sound/soc/intel/sst-haswell-ipc.c:828,2014-03-12,67
sound/soc/omap/mcbsp.c:425,2010-02-22,1546
sound/soc/pxa/pxa-ssp.c:115,2008-07-30,2118
sound/soc/samsung/dma.c:241,2007-02-14,2650
sound/soc/soc-dapm.c:2540,2012-07-05,682
tools/perf/util/header.c:2225,2011-09-30,961
tools/perf/util/symbol.c:443,2010-08-25,1362
tools/perf/util/trace-event-read.c:260,2013-03-21,423
,,
MIN,,9
AVERAGE,,1384.025477707
MAX,,3341