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authorLinus Torvalds <torvalds@linux-foundation.org>2009-12-14 09:58:24 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2009-12-14 09:58:24 -0800
commitd0316554d3586cbea60592a41391b5def2553d6f (patch)
tree5e7418f0bacbc68cec5dfd1541e03eb56870aa02 /arch/mn10300
parentfb0bbb92d42d5bd0ab224605444efdfed06d6934 (diff)
parent51e99be00ce2713cbb841cedc997cafa6e26c7f4 (diff)
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu: (34 commits) m68k: rename global variable vmalloc_end to m68k_vmalloc_end percpu: add missing per_cpu_ptr_to_phys() definition for UP percpu: Fix kdump failure if booted with percpu_alloc=page percpu: make misc percpu symbols unique percpu: make percpu symbols in ia64 unique percpu: make percpu symbols in powerpc unique percpu: make percpu symbols in x86 unique percpu: make percpu symbols in xen unique percpu: make percpu symbols in cpufreq unique percpu: make percpu symbols in oprofile unique percpu: make percpu symbols in tracer unique percpu: make percpu symbols under kernel/ and mm/ unique percpu: remove some sparse warnings percpu: make alloc_percpu() handle array types vmalloc: fix use of non-existent percpu variable in put_cpu_var() this_cpu: Use this_cpu_xx in trace_functions_graph.c this_cpu: Use this_cpu_xx for ftrace this_cpu: Use this_cpu_xx in nmi handling this_cpu: Use this_cpu operations in RCU this_cpu: Use this_cpu ops for VM statistics ... Fix up trivial (famous last words) global per-cpu naming conflicts in arch/x86/kvm/svm.c mm/slab.c
Diffstat (limited to 'arch/mn10300')
-rw-r--r--arch/mn10300/kernel/kprobes.c61
1 files changed, 30 insertions, 31 deletions
diff --git a/arch/mn10300/kernel/kprobes.c b/arch/mn10300/kernel/kprobes.c
index dacafab00eb2..67e6389d625a 100644
--- a/arch/mn10300/kernel/kprobes.c
+++ b/arch/mn10300/kernel/kprobes.c
@@ -31,13 +31,13 @@ const int kretprobe_blacklist_size = ARRAY_SIZE(kretprobe_blacklist);
#define KPROBE_HIT_ACTIVE 0x00000001
#define KPROBE_HIT_SS 0x00000002
-static struct kprobe *current_kprobe;
-static unsigned long current_kprobe_orig_pc;
-static unsigned long current_kprobe_next_pc;
-static int current_kprobe_ss_flags;
+static struct kprobe *cur_kprobe;
+static unsigned long cur_kprobe_orig_pc;
+static unsigned long cur_kprobe_next_pc;
+static int cur_kprobe_ss_flags;
static unsigned long kprobe_status;
-static kprobe_opcode_t current_kprobe_ss_buf[MAX_INSN_SIZE + 2];
-static unsigned long current_kprobe_bp_addr;
+static kprobe_opcode_t cur_kprobe_ss_buf[MAX_INSN_SIZE + 2];
+static unsigned long cur_kprobe_bp_addr;
DEFINE_PER_CPU(struct kprobe *, current_kprobe) = NULL;
@@ -399,26 +399,25 @@ void __kprobes prepare_singlestep(struct kprobe *p, struct pt_regs *regs)
{
unsigned long nextpc;
- current_kprobe_orig_pc = regs->pc;
- memcpy(current_kprobe_ss_buf, &p->ainsn.insn[0], MAX_INSN_SIZE);
- regs->pc = (unsigned long) current_kprobe_ss_buf;
+ cur_kprobe_orig_pc = regs->pc;
+ memcpy(cur_kprobe_ss_buf, &p->ainsn.insn[0], MAX_INSN_SIZE);
+ regs->pc = (unsigned long) cur_kprobe_ss_buf;
- nextpc = find_nextpc(regs, &current_kprobe_ss_flags);
- if (current_kprobe_ss_flags & SINGLESTEP_PCREL)
- current_kprobe_next_pc =
- current_kprobe_orig_pc + (nextpc - regs->pc);
+ nextpc = find_nextpc(regs, &cur_kprobe_ss_flags);
+ if (cur_kprobe_ss_flags & SINGLESTEP_PCREL)
+ cur_kprobe_next_pc = cur_kprobe_orig_pc + (nextpc - regs->pc);
else
- current_kprobe_next_pc = nextpc;
+ cur_kprobe_next_pc = nextpc;
/* branching instructions need special handling */
- if (current_kprobe_ss_flags & SINGLESTEP_BRANCH)
+ if (cur_kprobe_ss_flags & SINGLESTEP_BRANCH)
nextpc = singlestep_branch_setup(regs);
- current_kprobe_bp_addr = nextpc;
+ cur_kprobe_bp_addr = nextpc;
*(u8 *) nextpc = BREAKPOINT_INSTRUCTION;
- mn10300_dcache_flush_range2((unsigned) current_kprobe_ss_buf,
- sizeof(current_kprobe_ss_buf));
+ mn10300_dcache_flush_range2((unsigned) cur_kprobe_ss_buf,
+ sizeof(cur_kprobe_ss_buf));
mn10300_icache_inv();
}
@@ -440,7 +439,7 @@ static inline int __kprobes kprobe_handler(struct pt_regs *regs)
disarm_kprobe(p, regs);
ret = 1;
} else {
- p = current_kprobe;
+ p = cur_kprobe;
if (p->break_handler && p->break_handler(p, regs))
goto ss_probe;
}
@@ -464,7 +463,7 @@ static inline int __kprobes kprobe_handler(struct pt_regs *regs)
}
kprobe_status = KPROBE_HIT_ACTIVE;
- current_kprobe = p;
+ cur_kprobe = p;
if (p->pre_handler(p, regs)) {
/* handler has already set things up, so skip ss setup */
return 1;
@@ -491,8 +490,8 @@ no_kprobe:
static void __kprobes resume_execution(struct kprobe *p, struct pt_regs *regs)
{
/* we may need to fixup regs/stack after singlestepping a call insn */
- if (current_kprobe_ss_flags & SINGLESTEP_BRANCH) {
- regs->pc = current_kprobe_orig_pc;
+ if (cur_kprobe_ss_flags & SINGLESTEP_BRANCH) {
+ regs->pc = cur_kprobe_orig_pc;
switch (p->ainsn.insn[0]) {
case 0xcd: /* CALL (d16,PC) */
*(unsigned *) regs->sp = regs->mdr = regs->pc + 5;
@@ -523,8 +522,8 @@ static void __kprobes resume_execution(struct kprobe *p, struct pt_regs *regs)
}
}
- regs->pc = current_kprobe_next_pc;
- current_kprobe_bp_addr = 0;
+ regs->pc = cur_kprobe_next_pc;
+ cur_kprobe_bp_addr = 0;
}
static inline int __kprobes post_kprobe_handler(struct pt_regs *regs)
@@ -532,10 +531,10 @@ static inline int __kprobes post_kprobe_handler(struct pt_regs *regs)
if (!kprobe_running())
return 0;
- if (current_kprobe->post_handler)
- current_kprobe->post_handler(current_kprobe, regs, 0);
+ if (cur_kprobe->post_handler)
+ cur_kprobe->post_handler(cur_kprobe, regs, 0);
- resume_execution(current_kprobe, regs);
+ resume_execution(cur_kprobe, regs);
reset_current_kprobe();
preempt_enable_no_resched();
return 1;
@@ -545,12 +544,12 @@ static inline int __kprobes post_kprobe_handler(struct pt_regs *regs)
static inline
int __kprobes kprobe_fault_handler(struct pt_regs *regs, int trapnr)
{
- if (current_kprobe->fault_handler &&
- current_kprobe->fault_handler(current_kprobe, regs, trapnr))
+ if (cur_kprobe->fault_handler &&
+ cur_kprobe->fault_handler(cur_kprobe, regs, trapnr))
return 1;
if (kprobe_status & KPROBE_HIT_SS) {
- resume_execution(current_kprobe, regs);
+ resume_execution(cur_kprobe, regs);
reset_current_kprobe();
preempt_enable_no_resched();
}
@@ -567,7 +566,7 @@ int __kprobes kprobe_exceptions_notify(struct notifier_block *self,
switch (val) {
case DIE_BREAKPOINT:
- if (current_kprobe_bp_addr != args->regs->pc) {
+ if (cur_kprobe_bp_addr != args->regs->pc) {
if (kprobe_handler(args->regs))
return NOTIFY_STOP;
} else {