redonkable/remarkable-linux
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ftrace: add notrace annotations for NMI routines

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This annotates NMI functions with notrace. Some tracers may be able
to live with this, but some cannot. The safest is to turn it off,
it's not particularly interesting anyway.

Signed-off-by: Steven Rostedt <srostedt@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Steven Rostedt 2008-04-19 19:19:55 +02:00 committed by Ingo Molnar
parent 4bd01600b2
commit 5deb45e39b
4 changed files with 18 additions and 14 deletions
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3
arch/x86/kernel/nmi_32.c
View file

@ -321,7 +321,8 @@ EXPORT_SYMBOL(touch_nmi_watchdog);
extern void die_nmi(struct pt_regs *, const char *msg);
__kprobes int nmi_watchdog_tick(struct pt_regs * regs, unsigned reason)
notrace __kprobes int
nmi_watchdog_tick(struct pt_regs *regs, unsigned reason)
{
/*

6
arch/x86/kernel/nmi_64.c
View file

@ -313,7 +313,8 @@ void touch_nmi_watchdog(void)
}
EXPORT_SYMBOL(touch_nmi_watchdog);
int __kprobes nmi_watchdog_tick(struct pt_regs * regs, unsigned reason)
notrace __kprobes int
nmi_watchdog_tick(struct pt_regs *regs, unsigned reason)
{
int sum;
int touched = 0;
@ -384,7 +385,8 @@ int __kprobes nmi_watchdog_tick(struct pt_regs * regs, unsigned reason)
static unsigned ignore_nmis;
asmlinkage __kprobes void do_nmi(struct pt_regs * regs, long error_code)
asmlinkage notrace __kprobes void
do_nmi(struct pt_regs *regs, long error_code)
{
nmi_enter();
add_pda(__nmi_count,1);

12
arch/x86/kernel/traps_32.c
View file

@ -681,7 +681,7 @@ gp_in_kernel:
}
}
static __kprobes void
static notrace __kprobes void
mem_parity_error(unsigned char reason, struct pt_regs *regs)
{
printk(KERN_EMERG
@ -707,7 +707,7 @@ mem_parity_error(unsigned char reason, struct pt_regs *regs)
clear_mem_error(reason);
}
static __kprobes void
static notrace __kprobes void
io_check_error(unsigned char reason, struct pt_regs *regs)
{
unsigned long i;
@ -727,7 +727,7 @@ io_check_error(unsigned char reason, struct pt_regs *regs)
outb(reason, 0x61);
}
static __kprobes void
static notrace __kprobes void
unknown_nmi_error(unsigned char reason, struct pt_regs *regs)
{
if (notify_die(DIE_NMIUNKNOWN, "nmi", regs, reason, 2, SIGINT) == NOTIFY_STOP)
@ -755,7 +755,7 @@ unknown_nmi_error(unsigned char reason, struct pt_regs *regs)
static DEFINE_SPINLOCK(nmi_print_lock);
void __kprobes die_nmi(struct pt_regs *regs, const char *msg)
void notrace __kprobes die_nmi(struct pt_regs *regs, const char *msg)
{
if (notify_die(DIE_NMIWATCHDOG, msg, regs, 0, 2, SIGINT) == NOTIFY_STOP)
return;
@ -786,7 +786,7 @@ void __kprobes die_nmi(struct pt_regs *regs, const char *msg)
do_exit(SIGSEGV);
}
static __kprobes void default_do_nmi(struct pt_regs *regs)
static notrace __kprobes void default_do_nmi(struct pt_regs *regs)
{
unsigned char reason = 0;
@ -828,7 +828,7 @@ static __kprobes void default_do_nmi(struct pt_regs *regs)
static int ignore_nmis;
__kprobes void do_nmi(struct pt_regs *regs, long error_code)
notrace __kprobes void do_nmi(struct pt_regs *regs, long error_code)
{
int cpu;

11
arch/x86/kernel/traps_64.c
View file

@ -600,7 +600,8 @@ void die(const char * str, struct pt_regs * regs, long err)
oops_end(flags, regs, SIGSEGV);
}
void __kprobes die_nmi(char *str, struct pt_regs *regs, int do_panic)
notrace __kprobes void
die_nmi(char *str, struct pt_regs *regs, int do_panic)
{
unsigned long flags;
@ -772,7 +773,7 @@ asmlinkage void __kprobes do_general_protection(struct pt_regs * regs,
die("general protection fault", regs, error_code);
}
static __kprobes void
static notrace __kprobes void
mem_parity_error(unsigned char reason, struct pt_regs * regs)
{
printk(KERN_EMERG "Uhhuh. NMI received for unknown reason %02x.\n",
@ -796,7 +797,7 @@ mem_parity_error(unsigned char reason, struct pt_regs * regs)
outb(reason, 0x61);
}
static __kprobes void
static notrace __kprobes void
io_check_error(unsigned char reason, struct pt_regs * regs)
{
printk("NMI: IOCK error (debug interrupt?)\n");
@ -810,7 +811,7 @@ io_check_error(unsigned char reason, struct pt_regs * regs)
outb(reason, 0x61);
}
static __kprobes void
static notrace __kprobes void
unknown_nmi_error(unsigned char reason, struct pt_regs * regs)
{
if (notify_die(DIE_NMIUNKNOWN, "nmi", regs, reason, 2, SIGINT) == NOTIFY_STOP)
@ -827,7 +828,7 @@ unknown_nmi_error(unsigned char reason, struct pt_regs * regs)
/* Runs on IST stack. This code must keep interrupts off all the time.
Nested NMIs are prevented by the CPU. */
asmlinkage __kprobes void default_do_nmi(struct pt_regs *regs)
asmlinkage notrace __kprobes void default_do_nmi(struct pt_regs *regs)
{
unsigned char reason = 0;
int cpu;