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debug messages: implement dynamic debug

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Heavily inspired off linux kernel's dynamic debug:
 * add a /sys/kernel/debug/dynamic_debug/control file
 (accessible from linux side in /sys/class/mcos/mcos0/sys/kernel/debug/dynamic_debug/control)
 * read from file to list debug statements (currently limited to 4k in size)
 * write to file with '[file foo ][func bar ][line [x][-[y]]] [+-]p' to change values

Side effects:
 * reindented all linker scripts, there is a new __verbose section
 * added string function strpbrk

Change-Id: I36d7707274dcc3ecaf200075a31a2f0f76021059
This commit is contained in:
Dominique Martinet
2018-05-24 18:17:45 +09:00
parent bc887aab44
commit 3185334c1c
48 changed files with 407 additions and 232 deletions
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kernel/include/init.h
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@@ -33,6 +33,7 @@ extern void cpu_sysfs_setup(void);
extern void numa_sysfs_setup(void);
extern void rusage_sysfs_setup(void);
extern void status_sysfs_setup(void);
extern void dynamic_debug_sysfs_setup(void);
extern char *find_command_line(char *name);