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Date: Thu, 18 Mar 2010 17:38:35 GMT
From: tip-bot for Lin Ming <ming.m.lin@...el.com>
To: linux-tip-commits@...r.kernel.org
Cc: linux-kernel@...r.kernel.org, hpa@...or.com, mingo@...hat.com,
gorcunov@...nvz.org, peterz@...radead.org, ming.m.lin@...el.com,
tglx@...utronix.de, mingo@...e.hu
Subject: [tip:perf/core] perf, x86: Add cache events for the Pentium-4 PMU
Commit-ID: cb7d6b5053e86598735d9af19930f5929f007b7f
Gitweb: http://git.kernel.org/tip/cb7d6b5053e86598735d9af19930f5929f007b7f
Author: Lin Ming <ming.m.lin@...el.com>
AuthorDate: Thu, 18 Mar 2010 18:33:12 +0800
Committer: Ingo Molnar <mingo@...e.hu>
CommitDate: Thu, 18 Mar 2010 17:04:02 +0100
perf, x86: Add cache events for the Pentium-4 PMU
Move the HT bit setting code from p4_pmu_event_map to
p4_hw_config. So the cache events can get HT bit set correctly.
Tested on my P4 desktop, below 6 cache events work:
L1-dcache-load-misses
LLC-load-misses
dTLB-load-misses
dTLB-store-misses
iTLB-loads
iTLB-load-misses
Signed-off-by: Lin Ming <ming.m.lin@...el.com>
Reviewed-by: Cyrill Gorcunov <gorcunov@...nvz.org>
Cc: Peter Zijlstra <peterz@...radead.org>
LKML-Reference: <1268908392.13901.128.camel@...ggr.sh.intel.com>
Signed-off-by: Ingo Molnar <mingo@...e.hu>
---
arch/x86/include/asm/msr-index.h | 2 +
arch/x86/include/asm/perf_event_p4.h | 10 ++
arch/x86/kernel/cpu/perf_event_p4.c | 153 ++++++++++++++++++++++++++++++++--
3 files changed, 159 insertions(+), 6 deletions(-)
diff --git a/arch/x86/include/asm/msr-index.h b/arch/x86/include/asm/msr-index.h
index 1cd58cd..aef562c 100644
--- a/arch/x86/include/asm/msr-index.h
+++ b/arch/x86/include/asm/msr-index.h
@@ -357,6 +357,8 @@
#define MSR_P4_U2L_ESCR0 0x000003b0
#define MSR_P4_U2L_ESCR1 0x000003b1
+#define MSR_P4_PEBS_MATRIX_VERT 0x000003f2
+
/* Intel Core-based CPU performance counters */
#define MSR_CORE_PERF_FIXED_CTR0 0x00000309
#define MSR_CORE_PERF_FIXED_CTR1 0x0000030a
diff --git a/arch/x86/include/asm/perf_event_p4.h b/arch/x86/include/asm/perf_event_p4.h
index 7d3406a..871249c 100644
--- a/arch/x86/include/asm/perf_event_p4.h
+++ b/arch/x86/include/asm/perf_event_p4.h
@@ -708,4 +708,14 @@ enum P4_EVENTS_ATTR {
P4_MAKE_EVENT_ATTR(P4_INSTR_COMPLETED, BOGUS, 1),
};
+enum {
+ KEY_P4_L1D_OP_READ_RESULT_MISS,
+ KEY_P4_LL_OP_READ_RESULT_MISS,
+ KEY_P4_DTLB_OP_READ_RESULT_MISS,
+ KEY_P4_DTLB_OP_WRITE_RESULT_MISS,
+ KEY_P4_ITLB_OP_READ_RESULT_ACCESS,
+ KEY_P4_ITLB_OP_READ_RESULT_MISS,
+ KEY_P4_UOP_TYPE,
+};
+
#endif /* PERF_EVENT_P4_H */
diff --git a/arch/x86/kernel/cpu/perf_event_p4.c b/arch/x86/kernel/cpu/perf_event_p4.c
index 3e97ed3..b7bf991 100644
--- a/arch/x86/kernel/cpu/perf_event_p4.c
+++ b/arch/x86/kernel/cpu/perf_event_p4.c
@@ -19,6 +19,11 @@ struct p4_event_template {
u64 config; /* packed predefined bits */
int dep; /* upstream dependency event index */
int key; /* index into p4_templates */
+ u64 msr; /*
+ * the high 32 bits set into MSR_IA32_PEBS_ENABLE and
+ * the low 32 bits set into MSR_P4_PEBS_MATRIX_VERT
+ * for cache events
+ */
unsigned int emask; /* ESCR EventMask */
unsigned int escr_msr[2]; /* ESCR MSR for this event */
unsigned int cntr[2]; /* counter index (offset) */
@@ -31,6 +36,67 @@ struct p4_pmu_res {
static DEFINE_PER_CPU(struct p4_pmu_res, p4_pmu_config);
+#define P4_CACHE_EVENT_CONFIG(event, bit) \
+ p4_config_pack_escr(P4_EVENT_UNPACK_EVENT(event) << P4_EVNTSEL_EVENT_SHIFT) | \
+ p4_config_pack_escr((event##_##bit) << P4_EVNTSEL_EVENTMASK_SHIFT) | \
+ p4_config_pack_cccr(P4_EVENT_UNPACK_SELECTOR(event) << P4_CCCR_ESCR_SELECT_SHIFT)
+
+static __initconst u64 p4_hw_cache_event_ids
+ [PERF_COUNT_HW_CACHE_MAX]
+ [PERF_COUNT_HW_CACHE_OP_MAX]
+ [PERF_COUNT_HW_CACHE_RESULT_MAX] =
+{
+ [ C(L1D ) ] = {
+ [ C(OP_READ) ] = {
+ [ C(RESULT_ACCESS) ] = 0x0,
+ /* 1stL_cache_load_miss_retired */
+ [ C(RESULT_MISS) ] = P4_CACHE_EVENT_CONFIG(P4_REPLAY_EVENT, NBOGUS)
+ | KEY_P4_L1D_OP_READ_RESULT_MISS,
+ },
+ },
+ [ C(LL ) ] = {
+ [ C(OP_READ) ] = {
+ [ C(RESULT_ACCESS) ] = 0x0,
+ /* 2ndL_cache_load_miss_retired */
+ [ C(RESULT_MISS) ] = P4_CACHE_EVENT_CONFIG(P4_REPLAY_EVENT, NBOGUS)
+ | KEY_P4_LL_OP_READ_RESULT_MISS,
+ },
+ },
+ [ C(DTLB) ] = {
+ [ C(OP_READ) ] = {
+ [ C(RESULT_ACCESS) ] = 0x0,
+ /* DTLB_load_miss_retired */
+ [ C(RESULT_MISS) ] = P4_CACHE_EVENT_CONFIG(P4_REPLAY_EVENT, NBOGUS)
+ | KEY_P4_DTLB_OP_READ_RESULT_MISS,
+ },
+ [ C(OP_WRITE) ] = {
+ [ C(RESULT_ACCESS) ] = 0x0,
+ /* DTLB_store_miss_retired */
+ [ C(RESULT_MISS) ] = P4_CACHE_EVENT_CONFIG(P4_REPLAY_EVENT, NBOGUS)
+ | KEY_P4_DTLB_OP_WRITE_RESULT_MISS,
+ },
+ },
+ [ C(ITLB) ] = {
+ [ C(OP_READ) ] = {
+ /* ITLB_reference.HIT */
+ [ C(RESULT_ACCESS) ] = P4_CACHE_EVENT_CONFIG(P4_ITLB_REFERENCE, HIT)
+ | KEY_P4_ITLB_OP_READ_RESULT_ACCESS,
+
+ /* ITLB_reference.MISS */
+ [ C(RESULT_MISS) ] = P4_CACHE_EVENT_CONFIG(P4_ITLB_REFERENCE, MISS)
+ | KEY_P4_ITLB_OP_READ_RESULT_MISS,
+ },
+ [ C(OP_WRITE) ] = {
+ [ C(RESULT_ACCESS) ] = -1,
+ [ C(RESULT_MISS) ] = -1,
+ },
+ [ C(OP_PREFETCH) ] = {
+ [ C(RESULT_ACCESS) ] = -1,
+ [ C(RESULT_MISS) ] = -1,
+ },
+ },
+};
+
/*
* WARN: CCCR1 doesn't have a working enable bit so try to not
* use it if possible
@@ -121,11 +187,77 @@ struct p4_event_template p4_templates[] = {
.escr_msr = { MSR_P4_FSB_ESCR0, MSR_P4_FSB_ESCR1 },
.cntr = { 0, 2 },
},
- [7] = {
+ [KEY_P4_L1D_OP_READ_RESULT_MISS] = {
+ .opcode = P4_REPLAY_EVENT,
+ .config = 0,
+ .dep = -1,
+ .msr = (u64)(1 << 0 | 1 << 24) << 32 | (1 << 0),
+ .key = KEY_P4_L1D_OP_READ_RESULT_MISS,
+ .emask =
+ P4_EVENT_ATTR(P4_REPLAY_EVENT, NBOGUS),
+ .escr_msr = { MSR_P4_CRU_ESCR2, MSR_P4_CRU_ESCR2 },
+ .cntr = { 16, 17 },
+ },
+ [KEY_P4_LL_OP_READ_RESULT_MISS] = {
+ .opcode = P4_REPLAY_EVENT,
+ .config = 0,
+ .dep = -1,
+ .msr = (u64)(1 << 1 | 1 << 24) << 32 | (1 << 0),
+ .key = KEY_P4_LL_OP_READ_RESULT_MISS,
+ .emask =
+ P4_EVENT_ATTR(P4_REPLAY_EVENT, NBOGUS),
+ .escr_msr = { MSR_P4_CRU_ESCR2, MSR_P4_CRU_ESCR2 },
+ .cntr = { 16, 17 },
+ },
+ [KEY_P4_DTLB_OP_READ_RESULT_MISS] = {
+ .opcode = P4_REPLAY_EVENT,
+ .config = 0,
+ .dep = -1,
+ .msr = (u64)(1 << 2 | 1 << 24) << 32 | (1 << 0),
+ .key = KEY_P4_DTLB_OP_READ_RESULT_MISS,
+ .emask =
+ P4_EVENT_ATTR(P4_REPLAY_EVENT, NBOGUS),
+ .escr_msr = { MSR_P4_CRU_ESCR2, MSR_P4_CRU_ESCR2 },
+ .cntr = { 16, 17 },
+ },
+ [KEY_P4_DTLB_OP_WRITE_RESULT_MISS] = {
+ .opcode = P4_REPLAY_EVENT,
+ .config = 0,
+ .dep = -1,
+ .msr = (u64)(1 << 2 | 1 << 24) << 32 | (1 << 1),
+ .key = KEY_P4_DTLB_OP_WRITE_RESULT_MISS,
+ .emask =
+ P4_EVENT_ATTR(P4_REPLAY_EVENT, NBOGUS),
+ .escr_msr = { MSR_P4_CRU_ESCR2, MSR_P4_CRU_ESCR2 },
+ .cntr = { 16, 17 },
+ },
+ [KEY_P4_ITLB_OP_READ_RESULT_ACCESS] = {
+ .opcode = P4_ITLB_REFERENCE,
+ .config = 0,
+ .dep = -1,
+ .msr = 0,
+ .key = KEY_P4_ITLB_OP_READ_RESULT_ACCESS,
+ .emask =
+ P4_EVENT_ATTR(P4_ITLB_REFERENCE, HIT),
+ .escr_msr = { MSR_P4_ITLB_ESCR0, MSR_P4_ITLB_ESCR1 },
+ .cntr = { 0, 2 },
+ },
+ [KEY_P4_ITLB_OP_READ_RESULT_MISS] = {
+ .opcode = P4_ITLB_REFERENCE,
+ .config = 0,
+ .dep = -1,
+ .msr = 0,
+ .key = KEY_P4_ITLB_OP_READ_RESULT_MISS,
+ .emask =
+ P4_EVENT_ATTR(P4_ITLB_REFERENCE, MISS),
+ .escr_msr = { MSR_P4_ITLB_ESCR0, MSR_P4_ITLB_ESCR1 },
+ .cntr = { 0, 2 },
+ },
+ [KEY_P4_UOP_TYPE] = {
.opcode = P4_UOP_TYPE,
.config = 0,
.dep = -1,
- .key = 7,
+ .key = KEY_P4_UOP_TYPE,
.emask =
P4_EVENT_ATTR(P4_UOP_TYPE, TAGLOADS) |
P4_EVENT_ATTR(P4_UOP_TYPE, TAGSTORES),
@@ -155,10 +287,6 @@ static u64 p4_pmu_event_map(int hw_event)
config |= p4_config_pack_cccr(P4_EVENT_UNPACK_SELECTOR(tpl->opcode) << P4_CCCR_ESCR_SELECT_SHIFT);
config |= p4_config_pack_cccr(hw_event & P4_CCCR_RESERVED);
- /* on HT machine we need a special bit */
- if (p4_ht_active() && p4_ht_thread(raw_smp_processor_id()))
- config = p4_set_ht_bit(config);
-
return config;
}
@@ -211,6 +339,10 @@ static int p4_hw_config(struct perf_event_attr *attr, struct hw_perf_event *hwc)
/* Count user and OS events unless not requested to */
hwc->config |= p4_config_pack_escr(p4_default_escr_conf(cpu, attr->exclude_kernel,
attr->exclude_user));
+ /* on HT machine we need a special bit */
+ if (p4_ht_active() && p4_ht_thread(cpu))
+ hwc->config = p4_set_ht_bit(hwc->config);
+
return 0;
}
@@ -271,6 +403,12 @@ static void p4_pmu_enable_event(struct perf_event *event)
pr_crit("%s: Wrong index: %d\n", __func__, hwc->idx);
return;
}
+
+ if (tpl->msr) {
+ (void)checking_wrmsrl(MSR_IA32_PEBS_ENABLE, tpl->msr >> 32);
+ (void)checking_wrmsrl(MSR_P4_PEBS_MATRIX_VERT, tpl->msr & 0xffffffff);
+ }
+
escr_base = (u64)tpl->escr_msr[thread];
/*
@@ -577,6 +715,9 @@ static __init int p4_pmu_init(void)
return -ENODEV;
}
+ memcpy(hw_cache_event_ids, p4_hw_cache_event_ids,
+ sizeof(hw_cache_event_ids));
+
pr_cont("Netburst events, ");
x86_pmu = p4_pmu;
--
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