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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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7
kernel/process.c
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@@ -38,12 +38,13 @@
#include <xpmem.h>
#include <rusage_private.h>
#include <ihk/monitor.h>
#include <debug.h>
//#define DEBUG_PRINT_PROCESS
#ifdef DEBUG_PRINT_PROCESS
#define dkprintf(...) kprintf(__VA_ARGS__)
#define ekprintf(...) kprintf(__VA_ARGS__)
#undef DDEBUG_DEFAULT
#define DDEBUG_DEFAULT DDEBUG_PRINT
static void dtree(struct rb_node *node, int l) {
struct vm_range *range;
if (!node)
@@ -60,8 +61,6 @@ static void dump_tree(struct process_vm *vm) {
dtree(vm->vm_range_tree.rb_node, 1);
}
#else
#define dkprintf(...) do { if (0) kprintf(__VA_ARGS__); } while (0)
#define ekprintf(...) kprintf(__VA_ARGS__)
static void dump_tree(struct process_vm *vm) {}
#endif