diff options
| author | Borislav Petkov <bp@suse.de> | 2017-04-10 14:20:45 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2017-04-11 08:44:59 +0200 |
| commit | c2628f90c9964881a62dd8e9f7372ca05cb6fe32 (patch) | |
| tree | 8c6a875810abbf2d604385f092dd7e026a83104b /arch/x86/events/amd | |
| parent | 84b1e36a6aee080ea01256659e2957114a0a52b5 (diff) | |
perf/amd/uncore: Do feature check first, before assignments
... and save some unnecessary work. Remove now unused label while at it.
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Suravee Suthikulpanit <Suravee.Suthikulpanit@amd.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vince Weaver <vincent.weaver@maine.edu>
Link: http://lkml.kernel.org/r/20170410122047.3026-2-bp@alien8.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/x86/events/amd')
| -rw-r--r-- | arch/x86/events/amd/uncore.c | 9 |
1 files changed, 4 insertions, 5 deletions
diff --git a/arch/x86/events/amd/uncore.c b/arch/x86/events/amd/uncore.c index 4d1f7f2d9aff..abd4b9064fba 100644 --- a/arch/x86/events/amd/uncore.c +++ b/arch/x86/events/amd/uncore.c @@ -509,7 +509,10 @@ static int __init amd_uncore_init(void) int ret = -ENODEV; if (boot_cpu_data.x86_vendor != X86_VENDOR_AMD) - goto fail_nodev; + return -ENODEV; + + if (!boot_cpu_has(X86_FEATURE_TOPOEXT)) + return -ENODEV; switch(boot_cpu_data.x86) { case 23: @@ -552,9 +555,6 @@ static int __init amd_uncore_init(void) amd_nb_pmu.attr_groups = amd_uncore_attr_groups_df; amd_llc_pmu.attr_groups = amd_uncore_attr_groups_l3; - if (!boot_cpu_has(X86_FEATURE_TOPOEXT)) - goto fail_nodev; - if (boot_cpu_has(X86_FEATURE_PERFCTR_NB)) { amd_uncore_nb = alloc_percpu(struct amd_uncore *); if (!amd_uncore_nb) { @@ -615,7 +615,6 @@ fail_nb: if (amd_uncore_nb) free_percpu(amd_uncore_nb); -fail_nodev: return ret; } device_initcall(amd_uncore_init); |