diff options
| author | Peter Zijlstra <peterz@infradead.org> | 2020-05-29 23:27:40 +0200 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2020-06-11 15:15:24 +0200 |
| commit | bf2b3008440072068580c609d79a079656af0588 (patch) | |
| tree | 32071b8d9445c72a7934bdc0ecb11577da9625b3 /arch/x86/kernel | |
| parent | 59bc300b712998d10254ee20e24f2e7ec09c560a (diff) | |
| download | linux-bf2b3008440072068580c609d79a079656af0588.tar.bz2 | |
x86/entry: Rename trace_hardirqs_off_prepare()
The typical pattern for trace_hardirqs_off_prepare() is:
ENTRY
lockdep_hardirqs_off(); // because hardware
... do entry magic
instrumentation_begin();
trace_hardirqs_off_prepare();
... do actual work
trace_hardirqs_on_prepare();
lockdep_hardirqs_on_prepare();
instrumentation_end();
... do exit magic
lockdep_hardirqs_on();
which shows that it's named wrong, rename it to
trace_hardirqs_off_finish(), as it concludes the hardirq_off transition.
Also, given that the above is the only correct order, make the traditional
all-in-one trace_hardirqs_off() follow suit.
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lkml.kernel.org/r/20200529213321.415774872@infradead.org
Diffstat (limited to 'arch/x86/kernel')
| -rw-r--r-- | arch/x86/kernel/cpu/mce/core.c | 2 | ||||
| -rw-r--r-- | arch/x86/kernel/nmi.c | 2 | ||||
| -rw-r--r-- | arch/x86/kernel/traps.c | 4 |
3 files changed, 4 insertions, 4 deletions
diff --git a/arch/x86/kernel/cpu/mce/core.c b/arch/x86/kernel/cpu/mce/core.c index be499267bbb4..b9cb381b4019 100644 --- a/arch/x86/kernel/cpu/mce/core.c +++ b/arch/x86/kernel/cpu/mce/core.c @@ -1922,7 +1922,7 @@ static __always_inline void exc_machine_check_kernel(struct pt_regs *regs) * that out because it's an indirect call. Annotate it. */ instrumentation_begin(); - trace_hardirqs_off_prepare(); + trace_hardirqs_off_finish(); machine_check_vector(regs); if (regs->flags & X86_EFLAGS_IF) trace_hardirqs_on_prepare(); diff --git a/arch/x86/kernel/nmi.c b/arch/x86/kernel/nmi.c index 873a8c040b86..3a98ff36f411 100644 --- a/arch/x86/kernel/nmi.c +++ b/arch/x86/kernel/nmi.c @@ -330,7 +330,7 @@ static noinstr void default_do_nmi(struct pt_regs *regs) __this_cpu_write(last_nmi_rip, regs->ip); instrumentation_begin(); - trace_hardirqs_off_prepare(); + trace_hardirqs_off_finish(); handled = nmi_handle(NMI_LOCAL, regs); __this_cpu_add(nmi_stats.normal, handled); diff --git a/arch/x86/kernel/traps.c b/arch/x86/kernel/traps.c index 6f887be1ac0c..79af913e78a3 100644 --- a/arch/x86/kernel/traps.c +++ b/arch/x86/kernel/traps.c @@ -634,7 +634,7 @@ DEFINE_IDTENTRY_RAW(exc_int3) } else { nmi_enter(); instrumentation_begin(); - trace_hardirqs_off_prepare(); + trace_hardirqs_off_finish(); if (!do_int3(regs)) die("int3", regs, 0); if (regs->flags & X86_EFLAGS_IF) @@ -833,7 +833,7 @@ static __always_inline void exc_debug_kernel(struct pt_regs *regs, { nmi_enter(); instrumentation_begin(); - trace_hardirqs_off_prepare(); + trace_hardirqs_off_finish(); instrumentation_end(); /* |