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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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8
arch/x86_64/kernel/cpu.c
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@@ -31,6 +31,7 @@
#include <prctl.h>
#include <page.h>
#include <kmalloc.h>
#include <debug.h>
#define LAPIC_ID 0x020
#define LAPIC_TIMER 0x320
@@ -69,11 +70,8 @@
//#define DEBUG_PRINT_CPU
#ifdef DEBUG_PRINT_CPU
#define dkprintf kprintf
#define ekprintf kprintf
#else
#define dkprintf(...) do { if (0) kprintf(__VA_ARGS__); } while (0)
#define ekprintf kprintf
#undef DDEBUG_DEFAULT
#define DDEBUG_DEFAULT DDEBUG_PRINT
#endif
static void *lapic_vp;

8
arch/x86_64/kernel/gencore.c
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@@ -6,6 +6,7 @@
#include <process.h>
#include <string.h>
#include <elfcore.h>
#include <debug.h>
#define align32(x) ((((x) + 3) / 4) * 4)
#define alignpage(x) ((((x) + (PAGE_SIZE) - 1) / (PAGE_SIZE)) * (PAGE_SIZE))
@@ -13,11 +14,8 @@
//#define DEBUG_PRINT_GENCORE
#ifdef DEBUG_PRINT_GENCORE
#define dkprintf(...) kprintf(__VA_ARGS__)
#define ekprintf(...) kprintf(__VA_ARGS__)
#else
#define dkprintf(...) do { if (0) kprintf(__VA_ARGS__); } while (0)
#define ekprintf(...) kprintf(__VA_ARGS__)
#undef DDEBUG_DEFAULT
#define DDEBUG_DEFAULT DDEBUG_PRINT
#endif
/*

8
arch/x86_64/kernel/memory.c
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@@ -25,15 +25,13 @@
#include <cls.h>
#include <kmalloc.h>
#include <rusage_private.h>
#include <debug.h>
//#define DEBUG
#ifdef DEBUG
#define dkprintf(...) do { kprintf(__VA_ARGS__); } while (0)
#define ekprintf(...) do { kprintf(__VA_ARGS__); } while (0)
#else
#define dkprintf(...) do { } while (0)
#define ekprintf(...) do { kprintf(__VA_ARGS__); } while (0)
#undef DDEBUG_DEFAULT
#define DDEBUG_DEFAULT DDEBUG_PRINT
#endif
static char *last_page;

8
arch/x86_64/kernel/perfctr.c
View File

@@ -16,6 +16,7 @@
#include <registers.h>
#include <mc_perf_event.h>
#include <config.h>
#include <debug.h>
extern unsigned int *x86_march_perfmap;
extern int running_on_kvm(void);
@@ -25,11 +26,8 @@ int ihk_mc_perfctr_fixed_init(int counter, int mode);
//#define PERFCTR_DEBUG
#ifdef PERFCTR_DEBUG
#define dkprintf(...) do { kprintf(__VA_ARGS__); } while (0)
#define ekprintf(...) do { kprintf(__VA_ARGS__); } while (0)
#else
#define dkprintf(...) do { } while (0)
#define ekprintf(...) do { kprintf(__VA_ARGS__); } while (0)
#undef DDEBUG_DEFAULT
#define DDEBUG_DEFAULT DDEBUG_PRINT
#endif
#define X86_CR4_PCE 0x00000100

8
arch/x86_64/kernel/syscall.c
View File

@@ -31,6 +31,7 @@
#include <page.h>
#include <limits.h>
#include <syscall.h>
#include <debug.h>
void terminate_mcexec(int, int);
extern long do_sigaction(int sig, struct k_sigaction *act, struct k_sigaction *oact);
@@ -45,11 +46,8 @@ extern uint64_t get_xsave_mask();
//#define DEBUG_PRINT_SC
#ifdef DEBUG_PRINT_SC
#define dkprintf kprintf
#define ekprintf(...) kprintf(__VA_ARGS__)
#else
#define dkprintf(...) do { if (0) kprintf(__VA_ARGS__); } while (0)
#define ekprintf(...) kprintf(__VA_ARGS__)
#undef DDEBUG_DEFAULT
#define DDEBUG_DEFAULT DDEBUG_PRINT
#endif
uintptr_t debug_constants[] = {