Revision a09935b878dc8efd4b030ed1ffa0553fc9011fb8 authored by Namhyung Kim on 31 May 2017, 12:01:05 UTC, committed by Arnaldo Carvalho de Melo on 05 June 2017, 17:17:59 UTC
The decompress_kmodule() decompresses kernel modules in order to load symbols from it. In the DSO_BINARY_TYPE__BUILD_ID_CACHE case, it needs the full file path to extract the file extension to determine the decompression method. But overwriting 'name' will fail the decompression since it might point to a non-existing old file. Instead, use dso->long_name for having the correct extension and use the real filename to decompress. In the DSO_BINARY_TYPE__SYSTEM_PATH_KMODULE_COMP case, both names should be the same. This allows resolving symbols in the old modules. Before: $ perf report -i perf.data.old | grep scsi_mod 0.00% cc1 [scsi_mod] [k] 0x0000000000004aa6 0.00% as [scsi_mod] [k] 0x00000000000099e1 0.00% cc1 [scsi_mod] [k] 0x0000000000009830 0.00% cc1 [scsi_mod] [k] 0x0000000000001b8f After: 0.00% cc1 [scsi_mod] [k] scsi_handle_queue_ramp_up 0.00% as [scsi_mod] [k] scsi_sg_alloc 0.00% cc1 [scsi_mod] [k] scsi_setup_cmnd 0.00% cc1 [scsi_mod] [k] scsi_get_command Signed-off-by: Namhyung Kim <namhyung@kernel.org> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Andi Kleen <andi@firstfloor.org> Cc: David Ahern <dsahern@gmail.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: kernel-team@lge.com Link: http://lkml.kernel.org/r/20170531120105.21731-3-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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File | Mode | Size |
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Kconfig | -rw-r--r-- | 13.7 KB |
Makefile | -rw-r--r-- | 2.1 KB |
core.c | -rw-r--r-- | 24.0 KB |
pwm-ab8500.c | -rw-r--r-- | 3.3 KB |
pwm-atmel-hlcdc.c | -rw-r--r-- | 8.0 KB |
pwm-atmel-tcb.c | -rw-r--r-- | 11.7 KB |
pwm-atmel.c | -rw-r--r-- | 10.4 KB |
pwm-bcm-iproc.c | -rw-r--r-- | 7.5 KB |
pwm-bcm-kona.c | -rw-r--r-- | 9.5 KB |
pwm-bcm2835.c | -rw-r--r-- | 5.0 KB |
pwm-berlin.c | -rw-r--r-- | 7.3 KB |
pwm-bfin.c | -rw-r--r-- | 3.1 KB |
pwm-brcmstb.c | -rw-r--r-- | 8.3 KB |
pwm-clps711x.c | -rw-r--r-- | 4.3 KB |
pwm-crc.c | -rw-r--r-- | 3.6 KB |
pwm-cros-ec.c | -rw-r--r-- | 6.0 KB |
pwm-ep93xx.c | -rw-r--r-- | 5.8 KB |
pwm-fsl-ftm.c | -rw-r--r-- | 12.2 KB |
pwm-hibvt.c | -rw-r--r-- | 7.2 KB |
pwm-img.c | -rw-r--r-- | 8.0 KB |
pwm-imx.c | -rw-r--r-- | 8.2 KB |
pwm-jz4740.c | -rw-r--r-- | 4.8 KB |
pwm-lp3943.c | -rw-r--r-- | 7.5 KB |
pwm-lpc18xx-sct.c | -rw-r--r-- | 13.6 KB |
pwm-lpc32xx.c | -rw-r--r-- | 4.4 KB |
pwm-lpss-pci.c | -rw-r--r-- | 3.2 KB |
pwm-lpss-platform.c | -rw-r--r-- | 2.3 KB |
pwm-lpss.c | -rw-r--r-- | 5.8 KB |
pwm-lpss.h | -rw-r--r-- | 776 bytes |
pwm-mediatek.c | -rw-r--r-- | 4.9 KB |
pwm-meson.c | -rw-r--r-- | 13.4 KB |
pwm-mtk-disp.c | -rw-r--r-- | 7.2 KB |
pwm-mxs.c | -rw-r--r-- | 4.7 KB |
pwm-omap-dmtimer.c | -rw-r--r-- | 10.3 KB |
pwm-pca9685.c | -rw-r--r-- | 14.4 KB |
pwm-puv3.c | -rw-r--r-- | 3.5 KB |
pwm-pxa.c | -rw-r--r-- | 5.5 KB |
pwm-rcar.c | -rw-r--r-- | 6.6 KB |
pwm-renesas-tpu.c | -rw-r--r-- | 11.9 KB |
pwm-rockchip.c | -rw-r--r-- | 10.1 KB |
pwm-samsung.c | -rw-r--r-- | 16.9 KB |
pwm-spear.c | -rw-r--r-- | 6.5 KB |
pwm-sti.c | -rw-r--r-- | 16.6 KB |
pwm-stm32.c | -rw-r--r-- | 8.9 KB |
pwm-stmpe.c | -rw-r--r-- | 7.2 KB |
pwm-sun4i.c | -rw-r--r-- | 9.2 KB |
pwm-tegra.c | -rw-r--r-- | 7.2 KB |
pwm-tiecap.c | -rw-r--r-- | 8.1 KB |
pwm-tiehrpwm.c | -rw-r--r-- | 15.7 KB |
pwm-tipwmss.c | -rw-r--r-- | 1.6 KB |
pwm-twl-led.c | -rw-r--r-- | 8.6 KB |
pwm-twl.c | -rw-r--r-- | 9.3 KB |
pwm-vt8500.c | -rw-r--r-- | 6.8 KB |
sysfs.c | -rw-r--r-- | 9.4 KB |
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