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| author | Ingo Molnar <mingo@elte.hu> | 2010-10-15 03:12:45 (GMT) |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2010-10-15 03:12:45 (GMT) |
| commit | d9d572a9c0195486e3baf0d8d6a710196a707335 (patch) | |
| tree | af6ccb502b280adf5a4cd4c7be9243593432da26 | |
| parent | 3cba11d32bb4b24c3ba257043595772df4b9c7b5 (diff) | |
| parent | ebc8827f75954fe315492883eee5cb3f355d547d (diff) | |
| download | linux-d9d572a9c0195486e3baf0d8d6a710196a707335.tar.xz | |
Merge branch 'perf/core' of git://git.kernel.org/pub/scm/linux/kernel/git/frederic/random-tracing into perf/core
| -rw-r--r-- | arch/x86/mm/fault.c | 4 | ||||
| -rw-r--r-- | arch/x86/mm/kmemcheck/kmemcheck.c | 2 | ||||
| -rw-r--r-- | kernel/trace/trace_functions_graph.c | 5 |
3 files changed, 9 insertions, 2 deletions
diff --git a/arch/x86/mm/fault.c b/arch/x86/mm/fault.c index 4c4508e..a24c6cf 100644 --- a/arch/x86/mm/fault.c +++ b/arch/x86/mm/fault.c @@ -251,6 +251,8 @@ static noinline __kprobes int vmalloc_fault(unsigned long address) if (!(address >= VMALLOC_START && address < VMALLOC_END)) return -1; + WARN_ON_ONCE(in_nmi()); + /* * Synchronize this task's top level page-table * with the 'reference' page table. @@ -369,6 +371,8 @@ static noinline __kprobes int vmalloc_fault(unsigned long address) if (!(address >= VMALLOC_START && address < VMALLOC_END)) return -1; + WARN_ON_ONCE(in_nmi()); + /* * Copy kernel mappings over when needed. This can also * happen within a race in page table update. In the later diff --git a/arch/x86/mm/kmemcheck/kmemcheck.c b/arch/x86/mm/kmemcheck/kmemcheck.c index b3b531a..d87dd6d 100644 --- a/arch/x86/mm/kmemcheck/kmemcheck.c +++ b/arch/x86/mm/kmemcheck/kmemcheck.c @@ -631,6 +631,8 @@ bool kmemcheck_fault(struct pt_regs *regs, unsigned long address, if (!pte) return false; + WARN_ON_ONCE(in_nmi()); + if (error_code & 2) kmemcheck_access(regs, address, KMEMCHECK_WRITE); else diff --git a/kernel/trace/trace_functions_graph.c b/kernel/trace/trace_functions_graph.c index 02c708a..ef49e93 100644 --- a/kernel/trace/trace_functions_graph.c +++ b/kernel/trace/trace_functions_graph.c @@ -665,8 +665,9 @@ trace_print_graph_duration(unsigned long long duration, struct trace_seq *s) /* Print nsecs (we don't want to exceed 7 numbers) */ if (len < 7) { - snprintf(nsecs_str, min(sizeof(nsecs_str), 8UL - len), "%03lu", - nsecs_rem); + size_t slen = min_t(size_t, sizeof(nsecs_str), 8UL - len); + + snprintf(nsecs_str, slen, "%03lu", nsecs_rem); ret = trace_seq_printf(s, ".%s", nsecs_str); if (!ret) return TRACE_TYPE_PARTIAL_LINE; |