user/sven/linux.git/scripts/gdb/linux, branch v5.2

scripts/gdb: fix invocation when CONFIG_COMMON_CLK is not set

2019-06-01T22:51:31Z

CLK_GET_RATE_NOCACHE depends on CONFIG_COMMON_CLK. Importing constants.py when CONFIG_COMMON_CLK is not defined causes: (gdb) lx-symbols (...) File "scripts/gdb/linux/proc.py", line 15, in from linux import constants File "scripts/gdb/linux/constants.py", line 2, in LX_CLK_GET_RATE_NOCACHE = gdb.parse_and_eval("CLK_GET_RATE_NOCACHE") gdb.error: No symbol "CLK_GET_RATE_NOCACHE" in current context. Link: http://lkml.kernel.org/r/20190523195313.24701-1-farosas@linux.ibm.com Fixes: e7e6f462c1be ("scripts/gdb: print cached rate in lx-clk-summary") Signed-off-by: Fabiano Rosas Reviewed-by: Stephen Boyd Cc: Jan Kiszka Cc: Kieran Bingham Cc: Leonard Crestez Cc: Jackie Liu Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

scripts/gdb: print cached rate in lx-clk-summary

2019-05-15T02:52:52Z

The clk rate is always stored in clk_core but might be out of date and require calls to update from hardware. Deal with that case by printing a (c) suffix. Link: http://lkml.kernel.org/r/1a474318982a5f0125f2360c4161029b17f56bd1.1556881728.git.leonard.crestez@nxp.com Signed-off-by: Leonard Crestez Cc: Jan Kiszka Cc: Jason Wessel Cc: Kieran Bingham Cc: Stephen Boyd Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

scripts/gdb: clean up error handling in list helpers

2019-05-15T02:52:52Z

An incorrect argument to list_for_each is an internal error in gdb scripts so a TypeError should be raised. The gdb.GdbError exception type is intended for user errors such as incorrect invocation. Drop the type assertion in list_for_each_entry because list_for_each isn't going to suddenly yield something else. Applies to both list and hlist Link: http://lkml.kernel.org/r/c1d3fd4db13d999a3ba57f5bbc1924862d824f61.1556881728.git.leonard.crestez@nxp.com Signed-off-by: Leonard Crestez Reviewed-by: Stephen Boyd Cc: Jan Kiszka Cc: Jason Wessel Cc: Kieran Bingham Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

scripts/gdb: add $lx_clk_core_lookup function

2019-05-15T02:52:52Z

Finding an individual clk_core requires walking the tree which can be quite complicated so add a helper for easy access. (gdb) print *(struct clk_scu*)$lx_clk_core_lookup("uart0_clk")->hw Link: http://lkml.kernel.org/r/Message-ID: Signed-off-by: Leonard Crestez Cc: Jan Kiszka Cc: Jason Wessel Cc: Kieran Bingham Cc: Stephen Boyd Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

scripts/gdb: initial clk support: lx-clk-summary

2019-05-15T02:52:52Z

Add an lx-clk-summary command which prints a subset of /sys/kernel/debug/clk/clk_summary. This can be used to examine hangs caused by clk not being enabled. Link: http://lkml.kernel.org/r/Message-ID: Signed-off-by: Leonard Crestez Cc: Jan Kiszka Cc: Jason Wessel Cc: Kieran Bingham Cc: Stephen Boyd Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

scripts/gdb: add hlist utilities

2019-05-15T02:52:52Z

This allows easily examining kernel hlists in python. Link: http://lkml.kernel.org/r/Message-ID: Signed-off-by: Leonard Crestez Reviewed-by: Stephen Boyd Cc: Jason Wessel Cc: Jan Kiszka Cc: Kieran Bingham Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

scripts/gdb: silence pep8 checks

2019-05-15T02:52:52Z

These scripts have some pep8 style warnings. Fix them up so that this directory is all pep8 clean. Link: http://lkml.kernel.org/r/20190329220844.38234-6-swboyd@chromium.org Signed-off-by: Stephen Boyd Cc: Douglas Anderson Cc: Nikolay Borisov Cc: Kieran Bingham Cc: Jan Kiszka Cc: Jackie Liu Cc: Jason Wessel Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

scripts/gdb: add a timer list command

2019-05-15T02:52:52Z

Implement a command to print the timer list, much like how /proc/timer_list is implemented. This can be used to look at the pending timers on a crashed system. [swboyd@chromium.org: v2] Link: http://lkml.kernel.org/r/20190329220844.38234-5-swboyd@chromium.org Link: http://lkml.kernel.org/r/20190325184522.260535-5-swboyd@chromium.org Signed-off-by: Stephen Boyd Cc: Douglas Anderson Cc: Nikolay Borisov Cc: Kieran Bingham Cc: Jan Kiszka Cc: Jackie Liu Cc: Jason Wessel Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

scripts/gdb: add rb tree iterating utilities

2019-05-15T02:52:51Z

Implement gdb functions for rb_first(), rb_last(), rb_next(), and rb_prev(). These can be useful to iterate through the kernel's red-black trees. [swboyd@chromium.org: v2] Link: http://lkml.kernel.org/r/20190329220844.38234-4-swboyd@chromium.org Link: http://lkml.kernel.org/r/20190325184522.260535-4-swboyd@chromium.org Signed-off-by: Stephen Boyd Cc: Douglas Anderson Cc: Nikolay Borisov Cc: Kieran Bingham Cc: Jan Kiszka Cc: Jackie Liu Cc: Jason Wessel Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

scripts/gdb: add kernel config dumping command

2019-05-15T02:52:51Z

lx-configdump dumps the contents of the gzipped .config to a text file when the config is included in the kernel with CONFIG_IKCONFIG. By default, the file written is called config.txt, but it can be any user supplied filename as well. If the kernel config is in a module (configs.ko), then it can be loaded along with symbols for the module loaded with 'lx-symbols' and then this command will still work. Obviously if you have the whole vmlinux then this can also be achieved with scripts/extract-ikconfig, but this gdb script can be useful to confirm that the memory contents of the config in memory and the vmlinux contents on disk match what is expected. [swboyd@chromium.org: v2] Link: http://lkml.kernel.org/r/20190329220844.38234-3-swboyd@chromium.org Link: http://lkml.kernel.org/r/20190325184522.260535-3-swboyd@chromium.org Signed-off-by: Stephen Boyd Cc: Douglas Anderson Cc: Nikolay Borisov Cc: Kieran Bingham Cc: Jan Kiszka Cc: Jackie Liu Cc: Jason Wessel Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds