提交 c154e184 编写于 作者: Y Yunying Sun 提交者: Caspar Zhang

ICX: perf/x86/intel: Fix invalid Bit 13 for Icelake MSR_OFFCORE_RSP_x register

commit 3b238a64c3009fed36eaea1af629d9377759d87d upstream.

The Intel SDM states that bit 13 of Icelake's MSR_OFFCORE_RSP_x
register is valid, and used for counting hardware generated prefetches
of L3 cache. Update the bitmask to allow bit 13.

Before:
$ perf stat -e cpu/event=0xb7,umask=0x1,config1=0x1bfff/u sleep 3
 Performance counter stats for 'sleep 3':
   <not supported>      cpu/event=0xb7,umask=0x1,config1=0x1bfff/u

After:
$ perf stat -e cpu/event=0xb7,umask=0x1,config1=0x1bfff/u sleep 3
 Performance counter stats for 'sleep 3':
             9,293      cpu/event=0xb7,umask=0x1,config1=0x1bfff/u
Signed-off-by: NYunying Sun <yunying.sun@intel.com>
Signed-off-by: NPeter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: NKan Liang <kan.liang@linux.intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: acme@kernel.org
Cc: alexander.shishkin@linux.intel.com
Cc: bp@alien8.de
Cc: hpa@zytor.com
Cc: jolsa@redhat.com
Cc: namhyung@kernel.org
Link: https://lkml.kernel.org/r/20190724082932.12833-1-yunying.sun@intel.comSigned-off-by: NIngo Molnar <mingo@kernel.org>
Signed-off-by: NLin Wang <lin.x.wang@intel.com>
Acked-by: NJoseph Qi <joseph.qi@linux.alibaba.com>
上级 e4ed6f52
...@@ -260,8 +260,8 @@ static struct event_constraint intel_icl_event_constraints[] = { ...@@ -260,8 +260,8 @@ static struct event_constraint intel_icl_event_constraints[] = {
}; };
static struct extra_reg intel_icl_extra_regs[] __read_mostly = { static struct extra_reg intel_icl_extra_regs[] __read_mostly = {
INTEL_UEVENT_EXTRA_REG(0x01b7, MSR_OFFCORE_RSP_0, 0x3fffff9fffull, RSP_0), INTEL_UEVENT_EXTRA_REG(0x01b7, MSR_OFFCORE_RSP_0, 0x3fffffbfffull, RSP_0),
INTEL_UEVENT_EXTRA_REG(0x01bb, MSR_OFFCORE_RSP_1, 0x3fffff9fffull, RSP_1), INTEL_UEVENT_EXTRA_REG(0x01bb, MSR_OFFCORE_RSP_1, 0x3fffffbfffull, RSP_1),
INTEL_UEVENT_PEBS_LDLAT_EXTRA_REG(0x01cd), INTEL_UEVENT_PEBS_LDLAT_EXTRA_REG(0x01cd),
INTEL_UEVENT_EXTRA_REG(0x01c6, MSR_PEBS_FRONTEND, 0x7fff17, FE), INTEL_UEVENT_EXTRA_REG(0x01c6, MSR_PEBS_FRONTEND, 0x7fff17, FE),
EVENT_EXTRA_END EVENT_EXTRA_END
......
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