diff options
| author | Thomas Gleixner <tglx@linutronix.de> | 2016-07-13 20:16:10 +0300 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2016-07-14 10:34:32 +0300 |
| commit | 95ca792c7582fde2c435f84cbe872616e3c951f6 (patch) | |
| tree | 6854c753c1567fb9957af9c4f85b0d4b01045fbb /arch/x86/events/amd | |
| parent | 00e16c3d68fce504e880f59c9bdf23b2a4759d6d (diff) | |
| download | linux-95ca792c7582fde2c435f84cbe872616e3c951f6.tar.xz | |
perf/x86: Convert the core to the hotplug state machine
Replace the perf_notifier() install mechanism, which invokes magically
the callback on the current CPU. Convert the hardware specific
callbacks which are invoked from the x86 perf core to return proper
error codes instead of totally pointless NOTIFY_BAD return values.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Anna-Maria Gleixner <anna-maria@linutronix.de>
Reviewed-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc: Adam Borowski <kilobyte@angband.pl>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Borislav Petkov <bp@suse.de>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Kan Liang <kan.liang@intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Vince Weaver <vincent.weaver@maine.edu>
Cc: rt@linutronix.de
Link: http://lkml.kernel.org/r/20160713153333.670720553@linutronix.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/x86/events/amd')
| -rw-r--r-- | arch/x86/events/amd/core.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/arch/x86/events/amd/core.c b/arch/x86/events/amd/core.c index bd3e8421b57c..e07a22bb9308 100644 --- a/arch/x86/events/amd/core.c +++ b/arch/x86/events/amd/core.c @@ -370,13 +370,13 @@ static int amd_pmu_cpu_prepare(int cpu) WARN_ON_ONCE(cpuc->amd_nb); if (!x86_pmu.amd_nb_constraints) - return NOTIFY_OK; + return 0; cpuc->amd_nb = amd_alloc_nb(cpu); if (!cpuc->amd_nb) - return NOTIFY_BAD; + return -ENOMEM; - return NOTIFY_OK; + return 0; } static void amd_pmu_cpu_starting(int cpu) |