ICX: perf/x86: Remove pmu->pebs_no_xmm_regs

commit cd6b984f6d8cd615755b5404a51b7efe45215f28 upstream.

We don't need pmu->pebs_no_xmm_regs anymore, the capabilities
PERF_PMU_CAP_EXTENDED_REGS can be used to check if XMM registers
collection is supported.
Signed-off-by: NKan Liang <kan.liang@linux.intel.com>
Signed-off-by: NPeter Zijlstra (Intel) <peterz@infradead.org>
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: Thomas Gleixner <tglx@linutronix.de>
Cc: Vince Weaver <vincent.weaver@maine.edu>
Link: https://lkml.kernel.org/r/1559081314-9714-4-git-send-email-kan.liang@linux.intel.comSigned-off-by: NIngo Molnar <mingo@kernel.org>
Signed-off-by: NShen, Xiaochen <xiaochen.shen@intel.com>
Signed-off-by: NJeffle Xu <jefflexu@linux.alibaba.com>
Acked-by: NJoseph Qi <joseph.qi@linux.alibaba.com>
Acked-by: NCaspar Zhang <caspar@linux.alibaba.com>

arch/x86/events/core.c

@@ -568,7 +568,7 @@ int x86_pmu_hw_config(struct perf_event *event)
 	 * be collected in PEBS on some platforms, e.g. Icelake
 	 */
 	if (unlikely(event->attr.sample_regs_intr & PERF_REG_EXTENDED_MASK)) {
-		if (x86_pmu.pebs_no_xmm_regs)
+		if (!(event->pmu->capabilities & PERF_PMU_CAP_EXTENDED_REGS))
 			return -EINVAL;
 
 		if (!event->attr.precise_ip)

arch/x86/events/intel/ds.c

@@ -1964,8 +1964,6 @@ void __init intel_ds_init(void)
 	x86_pmu.bts  = boot_cpu_has(X86_FEATURE_BTS);
 	x86_pmu.pebs = boot_cpu_has(X86_FEATURE_PEBS);
 	x86_pmu.pebs_buffer_size = PEBS_BUFFER_SIZE;
-	if (x86_pmu.version <= 4)
-		x86_pmu.pebs_no_xmm_regs = 1;
 	if (x86_pmu.pebs) {
 		char pebs_type = x86_pmu.intel_cap.pebs_trap ?  '+' : '-';
 		char *pebs_qual = "";
@@ -2021,7 +2019,6 @@ void __init intel_ds_init(void)
 				x86_get_pmu()->capabilities |= PERF_PMU_CAP_EXTENDED_REGS;
 			} else {
 				/* Only basic record supported */
-				x86_pmu.pebs_no_xmm_regs = 1;
 				x86_pmu.large_pebs_flags &=
 					~(PERF_SAMPLE_ADDR |
 					  PERF_SAMPLE_TIME |

arch/x86/events/perf_event.h

@@ -649,8 +649,7 @@ struct x86_pmu {
 			pebs_active		:1,
 			pebs_broken		:1,
 			pebs_prec_dist		:1,
-			pebs_no_tlb		:1,
-			pebs_no_xmm_regs	:1;
+			pebs_no_tlb		:1;
 	int		pebs_record_size;
 	int		pebs_buffer_size;
 	int		max_pebs_events;