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Date: Thu, 11 Mar 2010 19:54:39 +0300
From: Cyrill Gorcunov <gorcunov@...nvz.org>
To: Lin Ming <ming.m.lin@...el.com>
Cc: Ingo Molnar <mingo@...e.hu>, "H. Peter Anvin" <hpa@...or.com>,
Thomas Gleixner <tglx@...utronix.de>,
Peter Zijlstra <peterz@...radead.org>,
Arnaldo Carvalho de Melo <acme@...hat.com>,
Stephane Eranian <eranian@...gle.com>,
Robert Richter <robert.richter@....com>,
Frederic Weisbecker <fweisbec@...il.com>,
LKML <linux-kernel@...r.kernel.org>
Subject: Re: [RFC] x86,perf: Implement minimal P4 PMU driver v14
On Thu, Mar 11, 2010 at 10:32:55AM +0800, Lin Ming wrote:
> commit ca03770(perf, x86: Add PEBS infrastructure) introduces a new
> function validate_event that calls x86_pmu.get_event_constraints.
>
> static int validate_event(struct perf_event *event)
> {
> ...
> c = x86_pmu.get_event_constraints(fake_cpuc, event);
> ...
> }
>
> So we need to add .get_event_constraints to p4_pmu.
>
> diff --git a/arch/x86/kernel/cpu/perf_event_p4.c b/arch/x86/kernel/cpu/perf_event_p4.c
> index 4eb79b1..99a2a7c 100644
> --- a/arch/x86/kernel/cpu/perf_event_p4.c
> +++ b/arch/x86/kernel/cpu/perf_event_p4.c
> @@ -586,6 +586,7 @@ static __initconst struct x86_pmu p4_pmu = {
> .max_period = (1ULL << 39) - 1,
> .hw_config = p4_hw_config,
> .schedule_events = p4_pmu_schedule_events,
> + .get_event_constraints = x86_get_event_constraints,
> };
>
> static __init int p4_pmu_init(void)
>
> ---
> Lin Ming
>
>
Patch is updated (and latest -tip/master is taken into account
as well).
Robert, introducing additional logic instead of function pointers
would lead to a valuable code duplication.
But I'll think about it anyway. Perhaps there is a way (still)
to implement it with a minimal former code intersection.
Also note that the patch squash really a small change into
former code, which make pretty easy to step back if we will need
it (for some reason).
And naming issue of header file is addressed too.
-- Cyrill
---
x86,perf: Implement minimal P4 PMU driver v15
Netburst PMU is a way differ from "architectural perfomance
monitoring" specfication. P4 uses a tuple of ESCR+CCCR+COUNTER
MSR registers to handle perfomance monitoring events.
A few implementation details:
1) We need a separate x86_pmu::hw_config helper in struct x86_pmu
since register bit-fields are quite different from P6, Core
and later cpu series.
2) For the same reason x86_pmu::schedule_events helper introduced.
3) hw_perf_event::config consists of packed ESCR+CCCR value.
It's allowed since in real both registers use only a half
of their size. Of course before make a real write into a
particular MSR we need to unpack value and extend it to
a proper size.
4) The tuple of packed ESCR+CCCR in hw_perf_event::config
doesn't describe the memory address of ESCR MSR register
so that we need to keep a mapping between this tuples
used and available ESCR (various P4 events may use same
ESCRs but not simultaneously), for this sake every active
event has a per-cpu map of hw_perf_event::idx <--> ESCR address.
5) Since hw_perf_event::idx is an offset to counter/control register
we need to lift X86_PMC_MAX_GENERIC up, otherwise kernel strip it down
to 8 registers and event armed may never be turned off (ie the bit
in active_mask is set but cycle never reach this index to check),
thanks to Peter Zijlstra
Restrictions:
- No cascaded counters support (do we ever need them?)
- No dependant events support (so PERF_COUNT_HW_INSTRUCTIONS
doesn't work for now)
- There are events with same counters which can't work simultaneously
(need to use intersected ones due to broken counter 1)
- No PERF_COUNT_HW_CACHE_ events yet
Todo:
- Implement dependant events
- Need proper hashing for event opcodes (no linear search, good for
debugging stage but not in real loads)
- Some events counted during a clock cycle -- need to set threshold
for them and count every clock cycle just to get summary statistics
(ie to behave the same way as other PMUs do)
- Need to swicth to use event_constraints
- To support RAW events we need to encode a global list of P4 events
into p4_templates
- Chache events need to be added
[Event status matrix]
Event status
-----------------------------
cycles works
cache-references works
cache-misses works
branch-misses works
bus-cycles partially (not work on 64bit cpu with HT enabled)
instruction doesnt work (needs dependant event [mop tagging])
branches doesnt work
Signed-off-by: Cyrill Gorcunov <gorcunov@...nvz.org>
Signed-off-by: Lin Ming <ming.m.lin@...el.com>
---
|
| Updated on top of -tip/master
| commit 2a1ca9948b3ec63c31974725cf364fec029760f5
| Merge: bbf7ae6 41acab8
| Author: Ingo Molnar <mingo@...e.hu>
| Date: Thu Mar 11 15:23:42 2010 +0100
|
| Merge branch 'sched/core'
|
arch/x86/include/asm/perf_event.h | 2
arch/x86/include/asm/perf_event_p4.h | 707 +++++++++++++++++++++++++++++++++
arch/x86/kernel/cpu/perf_event.c | 46 +-
arch/x86/kernel/cpu/perf_event_amd.c | 2
arch/x86/kernel/cpu/perf_event_intel.c | 15
arch/x86/kernel/cpu/perf_event_p4.c | 607 ++++++++++++++++++++++++++++
arch/x86/kernel/cpu/perf_event_p6.c | 2
7 files changed, 1358 insertions(+), 23 deletions(-)
Index: linux-2.6.git/arch/x86/include/asm/perf_event.h
=====================================================================
--- linux-2.6.git.orig/arch/x86/include/asm/perf_event.h
+++ linux-2.6.git/arch/x86/include/asm/perf_event.h
@@ -5,7 +5,7 @@
* Performance event hw details:
*/
-#define X86_PMC_MAX_GENERIC 8
+#define X86_PMC_MAX_GENERIC 32
#define X86_PMC_MAX_FIXED 3
#define X86_PMC_IDX_GENERIC 0
Index: linux-2.6.git/arch/x86/include/asm/perf_event_p4.h
=====================================================================
--- /dev/null
+++ linux-2.6.git/arch/x86/include/asm/perf_event_p4.h
@@ -0,0 +1,707 @@
+/*
+ * Netburst Perfomance Events (P4, old Xeon)
+ */
+
+#ifndef PERF_EVENT_P4_H
+#define PERF_EVENT_P4_H
+
+#include <linux/cpu.h>
+#include <linux/bitops.h>
+
+/*
+ * NetBurst has perfomance MSRs shared between
+ * threads if HT is turned on, ie for both logical
+ * processors (mem: in turn in Atom with HT support
+ * perf-MSRs are not shared and every thread has its
+ * own perf-MSRs set)
+ */
+#define ARCH_P4_TOTAL_ESCR (46)
+#define ARCH_P4_RESERVED_ESCR (2) /* IQ_ESCR(0,1) not always present */
+#define ARCH_P4_MAX_ESCR (ARCH_P4_TOTAL_ESCR - ARCH_P4_RESERVED_ESCR)
+#define ARCH_P4_MAX_CCCR (18)
+#define ARCH_P4_MAX_COUNTER (ARCH_P4_MAX_CCCR / 2)
+
+#define P4_EVNTSEL_EVENT_MASK 0x7e000000U
+#define P4_EVNTSEL_EVENT_SHIFT 25
+#define P4_EVNTSEL_EVENTMASK_MASK 0x01fffe00U
+#define P4_EVNTSEL_EVENTMASK_SHIFT 9
+#define P4_EVNTSEL_TAG_MASK 0x000001e0U
+#define P4_EVNTSEL_TAG_SHIFT 5
+#define P4_EVNTSEL_TAG_ENABLE 0x00000010U
+#define P4_EVNTSEL_T0_OS 0x00000008U
+#define P4_EVNTSEL_T0_USR 0x00000004U
+#define P4_EVNTSEL_T1_OS 0x00000002U
+#define P4_EVNTSEL_T1_USR 0x00000001U
+
+/* Non HT mask */
+#define P4_EVNTSEL_MASK \
+ (P4_EVNTSEL_EVENT_MASK | \
+ P4_EVNTSEL_EVENTMASK_MASK | \
+ P4_EVNTSEL_TAG_MASK | \
+ P4_EVNTSEL_TAG_ENABLE | \
+ P4_EVNTSEL_T0_OS | \
+ P4_EVNTSEL_T0_USR)
+
+/* HT mask */
+#define P4_EVNTSEL_MASK_HT \
+ (P4_EVNTSEL_MASK | \
+ P4_EVNTSEL_T1_OS | \
+ P4_EVNTSEL_T1_USR)
+
+#define P4_CCCR_OVF 0x80000000U
+#define P4_CCCR_CASCADE 0x40000000U
+#define P4_CCCR_OVF_PMI_T0 0x04000000U
+#define P4_CCCR_OVF_PMI_T1 0x08000000U
+#define P4_CCCR_FORCE_OVF 0x02000000U
+#define P4_CCCR_EDGE 0x01000000U
+#define P4_CCCR_THRESHOLD_MASK 0x00f00000U
+#define P4_CCCR_THRESHOLD_SHIFT 20
+#define P4_CCCR_THRESHOLD(v) ((v) << P4_CCCR_THRESHOLD_SHIFT)
+#define P4_CCCR_COMPLEMENT 0x00080000U
+#define P4_CCCR_COMPARE 0x00040000U
+#define P4_CCCR_ESCR_SELECT_MASK 0x0000e000U
+#define P4_CCCR_ESCR_SELECT_SHIFT 13
+#define P4_CCCR_ENABLE 0x00001000U
+#define P4_CCCR_THREAD_SINGLE 0x00010000U
+#define P4_CCCR_THREAD_BOTH 0x00020000U
+#define P4_CCCR_THREAD_ANY 0x00030000U
+
+/* Non HT mask */
+#define P4_CCCR_MASK \
+ (P4_CCCR_OVF | \
+ P4_CCCR_CASCADE | \
+ P4_CCCR_OVF_PMI_T0 | \
+ P4_CCCR_FORCE_OVF | \
+ P4_CCCR_EDGE | \
+ P4_CCCR_THRESHOLD_MASK | \
+ P4_CCCR_COMPLEMENT | \
+ P4_CCCR_COMPARE | \
+ P4_CCCR_ESCR_SELECT_MASK | \
+ P4_CCCR_ENABLE)
+
+/* HT mask */
+#define P4_CCCR_MASK_HT \
+ (P4_CCCR_MASK | \
+ P4_CCCR_THREAD_ANY)
+
+/*
+ * format is 32 bit: ee ss aa aa
+ * where
+ * ee - 8 bit event
+ * ss - 8 bit selector
+ * aa aa - 16 bits reserved for tags/attributes
+ */
+#define P4_EVENT_PACK(event, selector) (((event) << 24) | ((selector) << 16))
+#define P4_EVENT_UNPACK_EVENT(packed) (((packed) >> 24) & 0xff)
+#define P4_EVENT_UNPACK_SELECTOR(packed) (((packed) >> 16) & 0xff)
+#define P4_EVENT_PACK_ATTR(attr) ((attr))
+#define P4_EVENT_UNPACK_ATTR(packed) ((packed) & 0xffff)
+#define P4_MAKE_EVENT_ATTR(class, name, bit) class##_##name = (1 << bit)
+#define P4_EVENT_ATTR(class, name) class##_##name
+#define P4_EVENT_ATTR_STR(class, name) __stringify(class##_##name)
+
+/*
+ * config field is 64bit width and consists of
+ * HT << 63 | ESCR << 32 | CCCR
+ * where HT is HyperThreading bit (since ESCR
+ * has it reserved we may use it for own purpose)
+ *
+ * note that this is NOT the addresses of respective
+ * ESCR and CCCR but rather an only packed value should
+ * be unpacked and written to a proper addresses
+ *
+ * the base idea is to pack as much info as
+ * possible
+ */
+#define p4_config_pack_escr(v) (((u64)(v)) << 32)
+#define p4_config_pack_cccr(v) (((u64)(v)) & 0xffffffffULL)
+#define p4_config_unpack_escr(v) (((u64)(v)) >> 32)
+#define p4_config_unpack_cccr(v) (((u64)(v)) & 0xffffffffULL)
+
+#define p4_config_unpack_emask(v) \
+ ({ \
+ u32 t = p4_config_unpack_escr((v)); \
+ t &= P4_EVNTSEL_EVENTMASK_MASK; \
+ t >>= P4_EVNTSEL_EVENTMASK_SHIFT; \
+ t; \
+ })
+
+#define P4_CONFIG_HT_SHIFT 63
+#define P4_CONFIG_HT (1ULL << P4_CONFIG_HT_SHIFT)
+
+static inline u32 p4_config_unpack_opcode(u64 config)
+{
+ u32 e, s;
+
+ /*
+ * we don't care about HT presence here since
+ * event opcode doesn't depend on it
+ */
+ e = (p4_config_unpack_escr(config) & P4_EVNTSEL_EVENT_MASK) >> P4_EVNTSEL_EVENT_SHIFT;
+ s = (p4_config_unpack_cccr(config) & P4_CCCR_ESCR_SELECT_MASK) >> P4_CCCR_ESCR_SELECT_SHIFT;
+
+ return P4_EVENT_PACK(e, s);
+}
+
+static inline bool p4_is_event_cascaded(u64 config)
+{
+ u32 cccr = p4_config_unpack_cccr(config);
+ return !!(cccr & P4_CCCR_CASCADE);
+}
+
+static inline int p4_ht_config_thread(u64 config)
+{
+ return !!(config & P4_CONFIG_HT);
+}
+
+static inline u64 p4_set_ht_bit(u64 config)
+{
+ return config | P4_CONFIG_HT;
+}
+
+static inline u64 p4_clear_ht_bit(u64 config)
+{
+ return config & ~P4_CONFIG_HT;
+}
+
+static inline int p4_ht_active(void)
+{
+#ifdef CONFIG_SMP
+ return smp_num_siblings > 1;
+#endif
+ return 0;
+}
+
+static inline int p4_ht_thread(int cpu)
+{
+#ifdef CONFIG_SMP
+ if (smp_num_siblings == 2)
+ return cpu != cpumask_first(__get_cpu_var(cpu_sibling_map));
+#endif
+ return 0;
+}
+
+static inline int p4_should_swap_ts(u64 config, int cpu)
+{
+ return p4_ht_config_thread(config) ^ p4_ht_thread(cpu);
+}
+
+static inline u32 p4_default_cccr_conf(int cpu)
+{
+ /*
+ * Note that P4_CCCR_THREAD_ANY is "required" on
+ * non-HT machines (on HT machines we count TS events
+ * regardless the state of second logical processor
+ */
+ u32 cccr = P4_CCCR_THREAD_ANY;
+
+ if (!p4_ht_thread(cpu))
+ cccr |= P4_CCCR_OVF_PMI_T0;
+ else
+ cccr |= P4_CCCR_OVF_PMI_T1;
+
+ return cccr;
+}
+
+static inline u32 p4_default_escr_conf(int cpu, int exclude_os, int exclude_usr)
+{
+ u32 escr = 0;
+
+ if (!p4_ht_thread(cpu)) {
+ if (!exclude_os)
+ escr |= P4_EVNTSEL_T0_OS;
+ if (!exclude_usr)
+ escr |= P4_EVNTSEL_T0_USR;
+ } else {
+ if (!exclude_os)
+ escr |= P4_EVNTSEL_T1_OS;
+ if (!exclude_usr)
+ escr |= P4_EVNTSEL_T1_USR;
+ }
+
+ return escr;
+}
+
+/*
+ * Comments below the event represent ESCR restriction
+ * for this event and counter index per ESCR
+ *
+ * MSR_P4_IQ_ESCR0 and MSR_P4_IQ_ESCR1 are available only on early
+ * processor builds (family 0FH, models 01H-02H). These MSRs
+ * are not available on later versions, so that we don't use
+ * them completely
+ *
+ * Also note that CCCR1 do not have P4_CCCR_ENABLE bit properly
+ * working so that we should not use this CCCR and respective
+ * counter as result
+ */
+#define P4_TC_DELIVER_MODE P4_EVENT_PACK(0x01, 0x01)
+ /*
+ * MSR_P4_TC_ESCR0: 4, 5
+ * MSR_P4_TC_ESCR1: 6, 7
+ */
+
+#define P4_BPU_FETCH_REQUEST P4_EVENT_PACK(0x03, 0x00)
+ /*
+ * MSR_P4_BPU_ESCR0: 0, 1
+ * MSR_P4_BPU_ESCR1: 2, 3
+ */
+
+#define P4_ITLB_REFERENCE P4_EVENT_PACK(0x18, 0x03)
+ /*
+ * MSR_P4_ITLB_ESCR0: 0, 1
+ * MSR_P4_ITLB_ESCR1: 2, 3
+ */
+
+#define P4_MEMORY_CANCEL P4_EVENT_PACK(0x02, 0x05)
+ /*
+ * MSR_P4_DAC_ESCR0: 8, 9
+ * MSR_P4_DAC_ESCR1: 10, 11
+ */
+
+#define P4_MEMORY_COMPLETE P4_EVENT_PACK(0x08, 0x02)
+ /*
+ * MSR_P4_SAAT_ESCR0: 8, 9
+ * MSR_P4_SAAT_ESCR1: 10, 11
+ */
+
+#define P4_LOAD_PORT_REPLAY P4_EVENT_PACK(0x04, 0x02)
+ /*
+ * MSR_P4_SAAT_ESCR0: 8, 9
+ * MSR_P4_SAAT_ESCR1: 10, 11
+ */
+
+#define P4_STORE_PORT_REPLAY P4_EVENT_PACK(0x05, 0x02)
+ /*
+ * MSR_P4_SAAT_ESCR0: 8, 9
+ * MSR_P4_SAAT_ESCR1: 10, 11
+ */
+
+#define P4_MOB_LOAD_REPLAY P4_EVENT_PACK(0x03, 0x02)
+ /*
+ * MSR_P4_MOB_ESCR0: 0, 1
+ * MSR_P4_MOB_ESCR1: 2, 3
+ */
+
+#define P4_PAGE_WALK_TYPE P4_EVENT_PACK(0x01, 0x04)
+ /*
+ * MSR_P4_PMH_ESCR0: 0, 1
+ * MSR_P4_PMH_ESCR1: 2, 3
+ */
+
+#define P4_BSQ_CACHE_REFERENCE P4_EVENT_PACK(0x0c, 0x07)
+ /*
+ * MSR_P4_BSU_ESCR0: 0, 1
+ * MSR_P4_BSU_ESCR1: 2, 3
+ */
+
+#define P4_IOQ_ALLOCATION P4_EVENT_PACK(0x03, 0x06)
+ /*
+ * MSR_P4_FSB_ESCR0: 0, 1
+ * MSR_P4_FSB_ESCR1: 2, 3
+ */
+
+#define P4_IOQ_ACTIVE_ENTRIES P4_EVENT_PACK(0x1a, 0x06)
+ /*
+ * MSR_P4_FSB_ESCR1: 2, 3
+ */
+
+#define P4_FSB_DATA_ACTIVITY P4_EVENT_PACK(0x17, 0x06)
+ /*
+ * MSR_P4_FSB_ESCR0: 0, 1
+ * MSR_P4_FSB_ESCR1: 2, 3
+ */
+
+#define P4_BSQ_ALLOCATION P4_EVENT_PACK(0x05, 0x07)
+ /*
+ * MSR_P4_BSU_ESCR0: 0, 1
+ */
+
+#define P4_BSQ_ACTIVE_ENTRIES P4_EVENT_PACK(0x06, 0x07)
+ /*
+ * MSR_P4_BSU_ESCR1: 2, 3
+ */
+
+#define P4_SSE_INPUT_ASSIST P4_EVENT_PACK(0x34, 0x01)
+ /*
+ * MSR_P4_FIRM_ESCR: 8, 9
+ * MSR_P4_FIRM_ESCR: 10, 11
+ */
+
+#define P4_PACKED_SP_UOP P4_EVENT_PACK(0x08, 0x01)
+ /*
+ * MSR_P4_FIRM_ESCR0: 8, 9
+ * MSR_P4_FIRM_ESCR1: 10, 11
+ */
+
+#define P4_PACKED_DP_UOP P4_EVENT_PACK(0x0c, 0x01)
+ /*
+ * MSR_P4_FIRM_ESCR0: 8, 9
+ * MSR_P4_FIRM_ESCR1: 10, 11
+ */
+
+#define P4_SCALAR_SP_UOP P4_EVENT_PACK(0x0a, 0x01)
+ /*
+ * MSR_P4_FIRM_ESCR0: 8, 9
+ * MSR_P4_FIRM_ESCR1: 10, 11
+ */
+
+#define P4_SCALAR_DP_UOP P4_EVENT_PACK(0x0e, 0x01)
+ /*
+ * MSR_P4_FIRM_ESCR0: 8, 9
+ * MSR_P4_FIRM_ESCR1: 10, 11
+ */
+
+#define P4_64BIT_MMX_UOP P4_EVENT_PACK(0x02, 0x01)
+ /*
+ * MSR_P4_FIRM_ESCR0: 8, 9
+ * MSR_P4_FIRM_ESCR1: 10, 11
+ */
+
+#define P4_128BIT_MMX_UOP P4_EVENT_PACK(0x1a, 0x01)
+ /*
+ * MSR_P4_FIRM_ESCR0: 8, 9
+ * MSR_P4_FIRM_ESCR1: 10, 11
+ */
+
+#define P4_X87_FP_UOP P4_EVENT_PACK(0x04, 0x01)
+ /*
+ * MSR_P4_FIRM_ESCR0: 8, 9
+ * MSR_P4_FIRM_ESCR1: 10, 11
+ */
+
+#define P4_TC_MISC P4_EVENT_PACK(0x06, 0x01)
+ /*
+ * MSR_P4_TC_ESCR0: 4, 5
+ * MSR_P4_TC_ESCR1: 6, 7
+ */
+
+#define P4_GLOBAL_POWER_EVENTS P4_EVENT_PACK(0x13, 0x06)
+ /*
+ * MSR_P4_FSB_ESCR0: 0, 1
+ * MSR_P4_FSB_ESCR1: 2, 3
+ */
+
+#define P4_TC_MS_XFER P4_EVENT_PACK(0x05, 0x00)
+ /*
+ * MSR_P4_MS_ESCR0: 4, 5
+ * MSR_P4_MS_ESCR1: 6, 7
+ */
+
+#define P4_UOP_QUEUE_WRITES P4_EVENT_PACK(0x09, 0x00)
+ /*
+ * MSR_P4_MS_ESCR0: 4, 5
+ * MSR_P4_MS_ESCR1: 6, 7
+ */
+
+#define P4_RETIRED_MISPRED_BRANCH_TYPE P4_EVENT_PACK(0x05, 0x02)
+ /*
+ * MSR_P4_TBPU_ESCR0: 4, 5
+ * MSR_P4_TBPU_ESCR0: 6, 7
+ */
+
+#define P4_RETIRED_BRANCH_TYPE P4_EVENT_PACK(0x04, 0x02)
+ /*
+ * MSR_P4_TBPU_ESCR0: 4, 5
+ * MSR_P4_TBPU_ESCR0: 6, 7
+ */
+
+#define P4_RESOURCE_STALL P4_EVENT_PACK(0x01, 0x01)
+ /*
+ * MSR_P4_ALF_ESCR0: 12, 13, 16
+ * MSR_P4_ALF_ESCR1: 14, 15, 17
+ */
+
+#define P4_WC_BUFFER P4_EVENT_PACK(0x05, 0x05)
+ /*
+ * MSR_P4_DAC_ESCR0: 8, 9
+ * MSR_P4_DAC_ESCR1: 10, 11
+ */
+
+#define P4_B2B_CYCLES P4_EVENT_PACK(0x16, 0x03)
+ /*
+ * MSR_P4_FSB_ESCR0: 0, 1
+ * MSR_P4_FSB_ESCR1: 2, 3
+ */
+
+#define P4_BNR P4_EVENT_PACK(0x08, 0x03)
+ /*
+ * MSR_P4_FSB_ESCR0: 0, 1
+ * MSR_P4_FSB_ESCR1: 2, 3
+ */
+
+#define P4_SNOOP P4_EVENT_PACK(0x06, 0x03)
+ /*
+ * MSR_P4_FSB_ESCR0: 0, 1
+ * MSR_P4_FSB_ESCR1: 2, 3
+ */
+
+#define P4_RESPONSE P4_EVENT_PACK(0x04, 0x03)
+ /*
+ * MSR_P4_FSB_ESCR0: 0, 1
+ * MSR_P4_FSB_ESCR1: 2, 3
+ */
+
+#define P4_FRONT_END_EVENT P4_EVENT_PACK(0x08, 0x05)
+ /*
+ * MSR_P4_CRU_ESCR2: 12, 13, 16
+ * MSR_P4_CRU_ESCR3: 14, 15, 17
+ */
+
+#define P4_EXECUTION_EVENT P4_EVENT_PACK(0x0c, 0x05)
+ /*
+ * MSR_P4_CRU_ESCR2: 12, 13, 16
+ * MSR_P4_CRU_ESCR3: 14, 15, 17
+ */
+
+#define P4_REPLAY_EVENT P4_EVENT_PACK(0x09, 0x05)
+ /*
+ * MSR_P4_CRU_ESCR2: 12, 13, 16
+ * MSR_P4_CRU_ESCR3: 14, 15, 17
+ */
+
+#define P4_INSTR_RETIRED P4_EVENT_PACK(0x02, 0x04)
+ /*
+ * MSR_P4_CRU_ESCR2: 12, 13, 16
+ * MSR_P4_CRU_ESCR3: 14, 15, 17
+ */
+
+#define P4_UOPS_RETIRED P4_EVENT_PACK(0x01, 0x04)
+ /*
+ * MSR_P4_CRU_ESCR2: 12, 13, 16
+ * MSR_P4_CRU_ESCR3: 14, 15, 17
+ */
+
+#define P4_UOP_TYPE P4_EVENT_PACK(0x02, 0x02)
+ /*
+ * MSR_P4_RAT_ESCR0: 12, 13, 16
+ * MSR_P4_RAT_ESCR1: 14, 15, 17
+ */
+
+#define P4_BRANCH_RETIRED P4_EVENT_PACK(0x06, 0x05)
+ /*
+ * MSR_P4_CRU_ESCR2: 12, 13, 16
+ * MSR_P4_CRU_ESCR3: 14, 15, 17
+ */
+
+#define P4_MISPRED_BRANCH_RETIRED P4_EVENT_PACK(0x03, 0x04)
+ /*
+ * MSR_P4_CRU_ESCR0: 12, 13, 16
+ * MSR_P4_CRU_ESCR1: 14, 15, 17
+ */
+
+#define P4_X87_ASSIST P4_EVENT_PACK(0x03, 0x05)
+ /*
+ * MSR_P4_CRU_ESCR2: 12, 13, 16
+ * MSR_P4_CRU_ESCR3: 14, 15, 17
+ */
+
+#define P4_MACHINE_CLEAR P4_EVENT_PACK(0x02, 0x05)
+ /*
+ * MSR_P4_CRU_ESCR2: 12, 13, 16
+ * MSR_P4_CRU_ESCR3: 14, 15, 17
+ */
+
+#define P4_INSTR_COMPLETED P4_EVENT_PACK(0x07, 0x04)
+ /*
+ * MSR_P4_CRU_ESCR0: 12, 13, 16
+ * MSR_P4_CRU_ESCR1: 14, 15, 17
+ */
+
+/*
+ * a caller should use P4_EVENT_ATTR helper to
+ * pick the attribute needed, for example
+ *
+ * P4_EVENT_ATTR(P4_TC_DELIVER_MODE, DD)
+ */
+enum P4_EVENTS_ATTR {
+ P4_MAKE_EVENT_ATTR(P4_TC_DELIVER_MODE, DD, 0),
+ P4_MAKE_EVENT_ATTR(P4_TC_DELIVER_MODE, DB, 1),
+ P4_MAKE_EVENT_ATTR(P4_TC_DELIVER_MODE, DI, 2),
+ P4_MAKE_EVENT_ATTR(P4_TC_DELIVER_MODE, BD, 3),
+ P4_MAKE_EVENT_ATTR(P4_TC_DELIVER_MODE, BB, 4),
+ P4_MAKE_EVENT_ATTR(P4_TC_DELIVER_MODE, BI, 5),
+ P4_MAKE_EVENT_ATTR(P4_TC_DELIVER_MODE, ID, 6),
+
+ P4_MAKE_EVENT_ATTR(P4_BPU_FETCH_REQUEST, TCMISS, 0),
+
+ P4_MAKE_EVENT_ATTR(P4_ITLB_REFERENCE, HIT, 0),
+ P4_MAKE_EVENT_ATTR(P4_ITLB_REFERENCE, MISS, 1),
+ P4_MAKE_EVENT_ATTR(P4_ITLB_REFERENCE, HIT_UK, 2),
+
+ P4_MAKE_EVENT_ATTR(P4_MEMORY_CANCEL, ST_RB_FULL, 2),
+ P4_MAKE_EVENT_ATTR(P4_MEMORY_CANCEL, 64K_CONF, 3),
+
+ P4_MAKE_EVENT_ATTR(P4_MEMORY_COMPLETE, LSC, 0),
+ P4_MAKE_EVENT_ATTR(P4_MEMORY_COMPLETE, SSC, 1),
+
+ P4_MAKE_EVENT_ATTR(P4_LOAD_PORT_REPLAY, SPLIT_LD, 1),
+
+ P4_MAKE_EVENT_ATTR(P4_STORE_PORT_REPLAY, SPLIT_ST, 1),
+
+ P4_MAKE_EVENT_ATTR(P4_MOB_LOAD_REPLAY, NO_STA, 1),
+ P4_MAKE_EVENT_ATTR(P4_MOB_LOAD_REPLAY, NO_STD, 3),
+ P4_MAKE_EVENT_ATTR(P4_MOB_LOAD_REPLAY, PARTIAL_DATA, 4),
+ P4_MAKE_EVENT_ATTR(P4_MOB_LOAD_REPLAY, UNALGN_ADDR, 5),
+
+ P4_MAKE_EVENT_ATTR(P4_PAGE_WALK_TYPE, DTMISS, 0),
+ P4_MAKE_EVENT_ATTR(P4_PAGE_WALK_TYPE, ITMISS, 1),
+
+ P4_MAKE_EVENT_ATTR(P4_BSQ_CACHE_REFERENCE, RD_2ndL_HITS, 0),
+ P4_MAKE_EVENT_ATTR(P4_BSQ_CACHE_REFERENCE, RD_2ndL_HITE, 1),
+ P4_MAKE_EVENT_ATTR(P4_BSQ_CACHE_REFERENCE, RD_2ndL_HITM, 2),
+ P4_MAKE_EVENT_ATTR(P4_BSQ_CACHE_REFERENCE, RD_3rdL_HITS, 3),
+ P4_MAKE_EVENT_ATTR(P4_BSQ_CACHE_REFERENCE, RD_3rdL_HITE, 4),
+ P4_MAKE_EVENT_ATTR(P4_BSQ_CACHE_REFERENCE, RD_3rdL_HITM, 5),
+ P4_MAKE_EVENT_ATTR(P4_BSQ_CACHE_REFERENCE, RD_2ndL_MISS, 8),
+ P4_MAKE_EVENT_ATTR(P4_BSQ_CACHE_REFERENCE, RD_3rdL_MISS, 9),
+ P4_MAKE_EVENT_ATTR(P4_BSQ_CACHE_REFERENCE, WR_2ndL_MISS, 10),
+
+ P4_MAKE_EVENT_ATTR(P4_IOQ_ALLOCATION, DEFAULT, 0),
+ P4_MAKE_EVENT_ATTR(P4_IOQ_ALLOCATION, ALL_READ, 5),
+ P4_MAKE_EVENT_ATTR(P4_IOQ_ALLOCATION, ALL_WRITE, 6),
+ P4_MAKE_EVENT_ATTR(P4_IOQ_ALLOCATION, MEM_UC, 7),
+ P4_MAKE_EVENT_ATTR(P4_IOQ_ALLOCATION, MEM_WC, 8),
+ P4_MAKE_EVENT_ATTR(P4_IOQ_ALLOCATION, MEM_WT, 9),
+ P4_MAKE_EVENT_ATTR(P4_IOQ_ALLOCATION, MEM_WP, 10),
+ P4_MAKE_EVENT_ATTR(P4_IOQ_ALLOCATION, MEM_WB, 11),
+ P4_MAKE_EVENT_ATTR(P4_IOQ_ALLOCATION, OWN, 13),
+ P4_MAKE_EVENT_ATTR(P4_IOQ_ALLOCATION, OTHER, 14),
+ P4_MAKE_EVENT_ATTR(P4_IOQ_ALLOCATION, PREFETCH, 15),
+
+ P4_MAKE_EVENT_ATTR(P4_IOQ_ACTIVE_ENTRIES, DEFAULT, 0),
+ P4_MAKE_EVENT_ATTR(P4_IOQ_ACTIVE_ENTRIES, ALL_READ, 5),
+ P4_MAKE_EVENT_ATTR(P4_IOQ_ACTIVE_ENTRIES, ALL_WRITE, 6),
+ P4_MAKE_EVENT_ATTR(P4_IOQ_ACTIVE_ENTRIES, MEM_UC, 7),
+ P4_MAKE_EVENT_ATTR(P4_IOQ_ACTIVE_ENTRIES, MEM_WC, 8),
+ P4_MAKE_EVENT_ATTR(P4_IOQ_ACTIVE_ENTRIES, MEM_WT, 9),
+ P4_MAKE_EVENT_ATTR(P4_IOQ_ACTIVE_ENTRIES, MEM_WP, 10),
+ P4_MAKE_EVENT_ATTR(P4_IOQ_ACTIVE_ENTRIES, MEM_WB, 11),
+ P4_MAKE_EVENT_ATTR(P4_IOQ_ACTIVE_ENTRIES, OWN, 13),
+ P4_MAKE_EVENT_ATTR(P4_IOQ_ACTIVE_ENTRIES, OTHER, 14),
+ P4_MAKE_EVENT_ATTR(P4_IOQ_ACTIVE_ENTRIES, PREFETCH, 15),
+
+ P4_MAKE_EVENT_ATTR(P4_FSB_DATA_ACTIVITY, DRDY_DRV, 0),
+ P4_MAKE_EVENT_ATTR(P4_FSB_DATA_ACTIVITY, DRDY_OWN, 1),
+ P4_MAKE_EVENT_ATTR(P4_FSB_DATA_ACTIVITY, DRDY_OTHER, 2),
+ P4_MAKE_EVENT_ATTR(P4_FSB_DATA_ACTIVITY, DBSY_DRV, 3),
+ P4_MAKE_EVENT_ATTR(P4_FSB_DATA_ACTIVITY, DBSY_OWN, 4),
+ P4_MAKE_EVENT_ATTR(P4_FSB_DATA_ACTIVITY, DBSY_OTHER, 5),
+
+ P4_MAKE_EVENT_ATTR(P4_BSQ_ALLOCATION, REQ_TYPE0, 0),
+ P4_MAKE_EVENT_ATTR(P4_BSQ_ALLOCATION, REQ_TYPE1, 1),
+ P4_MAKE_EVENT_ATTR(P4_BSQ_ALLOCATION, REQ_LEN0, 2),
+ P4_MAKE_EVENT_ATTR(P4_BSQ_ALLOCATION, REQ_LEN1, 3),
+ P4_MAKE_EVENT_ATTR(P4_BSQ_ALLOCATION, REQ_IO_TYPE, 5),
+ P4_MAKE_EVENT_ATTR(P4_BSQ_ALLOCATION, REQ_LOCK_TYPE, 6),
+ P4_MAKE_EVENT_ATTR(P4_BSQ_ALLOCATION, REQ_CACHE_TYPE, 7),
+ P4_MAKE_EVENT_ATTR(P4_BSQ_ALLOCATION, REQ_SPLIT_TYPE, 8),
+ P4_MAKE_EVENT_ATTR(P4_BSQ_ALLOCATION, REQ_DEM_TYPE, 9),
+ P4_MAKE_EVENT_ATTR(P4_BSQ_ALLOCATION, REQ_ORD_TYPE, 10),
+ P4_MAKE_EVENT_ATTR(P4_BSQ_ALLOCATION, MEM_TYPE0, 11),
+ P4_MAKE_EVENT_ATTR(P4_BSQ_ALLOCATION, MEM_TYPE1, 12),
+ P4_MAKE_EVENT_ATTR(P4_BSQ_ALLOCATION, MEM_TYPE2, 13),
+
+ P4_MAKE_EVENT_ATTR(P4_BSQ_ACTIVE_ENTRIES, REQ_TYPE0, 0),
+ P4_MAKE_EVENT_ATTR(P4_BSQ_ACTIVE_ENTRIES, REQ_TYPE1, 1),
+ P4_MAKE_EVENT_ATTR(P4_BSQ_ACTIVE_ENTRIES, REQ_LEN0, 2),
+ P4_MAKE_EVENT_ATTR(P4_BSQ_ACTIVE_ENTRIES, REQ_LEN1, 3),
+ P4_MAKE_EVENT_ATTR(P4_BSQ_ACTIVE_ENTRIES, REQ_IO_TYPE, 5),
+ P4_MAKE_EVENT_ATTR(P4_BSQ_ACTIVE_ENTRIES, REQ_LOCK_TYPE, 6),
+ P4_MAKE_EVENT_ATTR(P4_BSQ_ACTIVE_ENTRIES, REQ_CACHE_TYPE, 7),
+ P4_MAKE_EVENT_ATTR(P4_BSQ_ACTIVE_ENTRIES, REQ_SPLIT_TYPE, 8),
+ P4_MAKE_EVENT_ATTR(P4_BSQ_ACTIVE_ENTRIES, REQ_DEM_TYPE, 9),
+ P4_MAKE_EVENT_ATTR(P4_BSQ_ACTIVE_ENTRIES, REQ_ORD_TYPE, 10),
+ P4_MAKE_EVENT_ATTR(P4_BSQ_ACTIVE_ENTRIES, MEM_TYPE0, 11),
+ P4_MAKE_EVENT_ATTR(P4_BSQ_ACTIVE_ENTRIES, MEM_TYPE1, 12),
+ P4_MAKE_EVENT_ATTR(P4_BSQ_ACTIVE_ENTRIES, MEM_TYPE2, 13),
+
+ P4_MAKE_EVENT_ATTR(P4_SSE_INPUT_ASSIST, ALL, 15),
+
+ P4_MAKE_EVENT_ATTR(P4_PACKED_SP_UOP, ALL, 15),
+
+ P4_MAKE_EVENT_ATTR(P4_PACKED_DP_UOP, ALL, 15),
+
+ P4_MAKE_EVENT_ATTR(P4_SCALAR_SP_UOP, ALL, 15),
+
+ P4_MAKE_EVENT_ATTR(P4_SCALAR_DP_UOP, ALL, 15),
+
+ P4_MAKE_EVENT_ATTR(P4_64BIT_MMX_UOP, ALL, 15),
+
+ P4_MAKE_EVENT_ATTR(P4_128BIT_MMX_UOP, ALL, 15),
+
+ P4_MAKE_EVENT_ATTR(P4_X87_FP_UOP, ALL, 15),
+
+ P4_MAKE_EVENT_ATTR(P4_TC_MISC, FLUSH, 4),
+
+ P4_MAKE_EVENT_ATTR(P4_GLOBAL_POWER_EVENTS, RUNNING, 0),
+
+ P4_MAKE_EVENT_ATTR(P4_TC_MS_XFER, CISC, 0),
+
+ P4_MAKE_EVENT_ATTR(P4_UOP_QUEUE_WRITES, FROM_TC_BUILD, 0),
+ P4_MAKE_EVENT_ATTR(P4_UOP_QUEUE_WRITES, FROM_TC_DELIVER, 1),
+ P4_MAKE_EVENT_ATTR(P4_UOP_QUEUE_WRITES, FROM_ROM, 2),
+
+ P4_MAKE_EVENT_ATTR(P4_RETIRED_MISPRED_BRANCH_TYPE, CONDITIONAL, 1),
+ P4_MAKE_EVENT_ATTR(P4_RETIRED_MISPRED_BRANCH_TYPE, CALL, 2),
+ P4_MAKE_EVENT_ATTR(P4_RETIRED_MISPRED_BRANCH_TYPE, RETURN, 3),
+ P4_MAKE_EVENT_ATTR(P4_RETIRED_MISPRED_BRANCH_TYPE, INDIRECT, 4),
+
+ P4_MAKE_EVENT_ATTR(P4_RETIRED_BRANCH_TYPE, CONDITIONAL, 1),
+ P4_MAKE_EVENT_ATTR(P4_RETIRED_BRANCH_TYPE, CALL, 2),
+ P4_MAKE_EVENT_ATTR(P4_RETIRED_BRANCH_TYPE, RETURN, 3),
+ P4_MAKE_EVENT_ATTR(P4_RETIRED_BRANCH_TYPE, INDIRECT, 4),
+
+ P4_MAKE_EVENT_ATTR(P4_RESOURCE_STALL, SBFULL, 5),
+
+ P4_MAKE_EVENT_ATTR(P4_WC_BUFFER, WCB_EVICTS, 0),
+ P4_MAKE_EVENT_ATTR(P4_WC_BUFFER, WCB_FULL_EVICTS, 1),
+
+ P4_MAKE_EVENT_ATTR(P4_FRONT_END_EVENT, NBOGUS, 0),
+ P4_MAKE_EVENT_ATTR(P4_FRONT_END_EVENT, BOGUS, 1),
+
+ P4_MAKE_EVENT_ATTR(P4_EXECUTION_EVENT, NBOGUS0, 0),
+ P4_MAKE_EVENT_ATTR(P4_EXECUTION_EVENT, NBOGUS1, 1),
+ P4_MAKE_EVENT_ATTR(P4_EXECUTION_EVENT, NBOGUS2, 2),
+ P4_MAKE_EVENT_ATTR(P4_EXECUTION_EVENT, NBOGUS3, 3),
+ P4_MAKE_EVENT_ATTR(P4_EXECUTION_EVENT, BOGUS0, 4),
+ P4_MAKE_EVENT_ATTR(P4_EXECUTION_EVENT, BOGUS1, 5),
+ P4_MAKE_EVENT_ATTR(P4_EXECUTION_EVENT, BOGUS2, 6),
+ P4_MAKE_EVENT_ATTR(P4_EXECUTION_EVENT, BOGUS3, 7),
+
+ P4_MAKE_EVENT_ATTR(P4_REPLAY_EVENT, NBOGUS, 0),
+ P4_MAKE_EVENT_ATTR(P4_REPLAY_EVENT, BOGUS, 1),
+
+ P4_MAKE_EVENT_ATTR(P4_INSTR_RETIRED, NBOGUSNTAG, 0),
+ P4_MAKE_EVENT_ATTR(P4_INSTR_RETIRED, NBOGUSTAG, 1),
+ P4_MAKE_EVENT_ATTR(P4_INSTR_RETIRED, BOGUSNTAG, 2),
+ P4_MAKE_EVENT_ATTR(P4_INSTR_RETIRED, BOGUSTAG, 3),
+
+ P4_MAKE_EVENT_ATTR(P4_UOPS_RETIRED, NBOGUS, 0),
+ P4_MAKE_EVENT_ATTR(P4_UOPS_RETIRED, BOGUS, 1),
+
+ P4_MAKE_EVENT_ATTR(P4_UOP_TYPE, TAGLOADS, 1),
+ P4_MAKE_EVENT_ATTR(P4_UOP_TYPE, TAGSTORES, 2),
+
+ P4_MAKE_EVENT_ATTR(P4_BRANCH_RETIRED, MMNP, 0),
+ P4_MAKE_EVENT_ATTR(P4_BRANCH_RETIRED, MMNM, 1),
+ P4_MAKE_EVENT_ATTR(P4_BRANCH_RETIRED, MMTP, 2),
+ P4_MAKE_EVENT_ATTR(P4_BRANCH_RETIRED, MMTM, 3),
+
+ P4_MAKE_EVENT_ATTR(P4_MISPRED_BRANCH_RETIRED, NBOGUS, 0),
+
+ P4_MAKE_EVENT_ATTR(P4_X87_ASSIST, FPSU, 0),
+ P4_MAKE_EVENT_ATTR(P4_X87_ASSIST, FPSO, 1),
+ P4_MAKE_EVENT_ATTR(P4_X87_ASSIST, POAO, 2),
+ P4_MAKE_EVENT_ATTR(P4_X87_ASSIST, POAU, 3),
+ P4_MAKE_EVENT_ATTR(P4_X87_ASSIST, PREA, 4),
+
+ P4_MAKE_EVENT_ATTR(P4_MACHINE_CLEAR, CLEAR, 0),
+ P4_MAKE_EVENT_ATTR(P4_MACHINE_CLEAR, MOCLEAR, 1),
+ P4_MAKE_EVENT_ATTR(P4_MACHINE_CLEAR, SMCLEAR, 2),
+
+ P4_MAKE_EVENT_ATTR(P4_INSTR_COMPLETED, NBOGUS, 0),
+ P4_MAKE_EVENT_ATTR(P4_INSTR_COMPLETED, BOGUS, 1),
+};
+
+#endif /* PERF_EVENT_P4_H */
Index: linux-2.6.git/arch/x86/kernel/cpu/perf_event.c
=====================================================================
--- linux-2.6.git.orig/arch/x86/kernel/cpu/perf_event.c
+++ linux-2.6.git/arch/x86/kernel/cpu/perf_event.c
@@ -190,6 +190,8 @@ struct x86_pmu {
void (*enable_all)(void);
void (*enable)(struct perf_event *);
void (*disable)(struct perf_event *);
+ int (*hw_config)(struct perf_event_attr *attr, struct hw_perf_event *hwc);
+ int (*schedule_events)(struct cpu_hw_events *cpuc, int n, int *assign);
unsigned eventsel;
unsigned perfctr;
u64 (*event_map)(int);
@@ -415,6 +417,25 @@ set_ext_hw_attr(struct hw_perf_event *hw
return 0;
}
+static int x86_hw_config(struct perf_event_attr *attr, struct hw_perf_event *hwc)
+{
+ /*
+ * Generate PMC IRQs:
+ * (keep 'enabled' bit clear for now)
+ */
+ hwc->config = ARCH_PERFMON_EVENTSEL_INT;
+
+ /*
+ * Count user and OS events unless requested not to
+ */
+ if (!attr->exclude_user)
+ hwc->config |= ARCH_PERFMON_EVENTSEL_USR;
+ if (!attr->exclude_kernel)
+ hwc->config |= ARCH_PERFMON_EVENTSEL_OS;
+
+ return 0;
+}
+
/*
* Setup the hardware configuration for a given attr_type
*/
@@ -446,23 +467,13 @@ static int __hw_perf_event_init(struct p
event->destroy = hw_perf_event_destroy;
- /*
- * Generate PMC IRQs:
- * (keep 'enabled' bit clear for now)
- */
- hwc->config = ARCH_PERFMON_EVENTSEL_INT;
-
hwc->idx = -1;
hwc->last_cpu = -1;
hwc->last_tag = ~0ULL;
- /*
- * Count user and OS events unless requested not to.
- */
- if (!attr->exclude_user)
- hwc->config |= ARCH_PERFMON_EVENTSEL_USR;
- if (!attr->exclude_kernel)
- hwc->config |= ARCH_PERFMON_EVENTSEL_OS;
+ /* Processor specifics */
+ if (x86_pmu.hw_config(attr, hwc))
+ return -EOPNOTSUPP;
if (!hwc->sample_period) {
hwc->sample_period = x86_pmu.max_period;
@@ -517,7 +528,7 @@ static int __hw_perf_event_init(struct p
return -EOPNOTSUPP;
/* BTS is currently only allowed for user-mode. */
- if (hwc->config & ARCH_PERFMON_EVENTSEL_OS)
+ if (!attr->exclude_kernel)
return -EOPNOTSUPP;
}
@@ -925,7 +936,7 @@ static int x86_pmu_enable(struct perf_ev
if (n < 0)
return n;
- ret = x86_schedule_events(cpuc, n, assign);
+ ret = x86_pmu.schedule_events(cpuc, n, assign);
if (ret)
return ret;
/*
@@ -1257,7 +1268,7 @@ int hw_perf_group_sched_in(struct perf_e
if (n0 < 0)
return n0;
- ret = x86_schedule_events(cpuc, n0, assign);
+ ret = x86_pmu.schedule_events(cpuc, n0, assign);
if (ret)
return ret;
@@ -1307,6 +1318,7 @@ undo:
#include "perf_event_amd.c"
#include "perf_event_p6.c"
+#include "perf_event_p4.c"
#include "perf_event_intel_lbr.c"
#include "perf_event_intel_ds.c"
#include "perf_event_intel.c"
@@ -1509,7 +1521,7 @@ static int validate_group(struct perf_ev
fake_cpuc->n_events = n;
- ret = x86_schedule_events(fake_cpuc, n, NULL);
+ ret = x86_pmu.schedule_events(fake_cpuc, n, NULL);
out_free:
kfree(fake_cpuc);
Index: linux-2.6.git/arch/x86/kernel/cpu/perf_event_amd.c
=====================================================================
--- linux-2.6.git.orig/arch/x86/kernel/cpu/perf_event_amd.c
+++ linux-2.6.git/arch/x86/kernel/cpu/perf_event_amd.c
@@ -363,6 +363,8 @@ static __initconst struct x86_pmu amd_pm
.enable_all = x86_pmu_enable_all,
.enable = x86_pmu_enable_event,
.disable = x86_pmu_disable_event,
+ .hw_config = x86_hw_config,
+ .schedule_events = x86_schedule_events,
.eventsel = MSR_K7_EVNTSEL0,
.perfctr = MSR_K7_PERFCTR0,
.event_map = amd_pmu_event_map,
Index: linux-2.6.git/arch/x86/kernel/cpu/perf_event_intel.c
=====================================================================
--- linux-2.6.git.orig/arch/x86/kernel/cpu/perf_event_intel.c
+++ linux-2.6.git/arch/x86/kernel/cpu/perf_event_intel.c
@@ -749,6 +749,8 @@ static __initconst struct x86_pmu core_p
.enable_all = x86_pmu_enable_all,
.enable = x86_pmu_enable_event,
.disable = x86_pmu_disable_event,
+ .hw_config = x86_hw_config,
+ .schedule_events = x86_schedule_events,
.eventsel = MSR_ARCH_PERFMON_EVENTSEL0,
.perfctr = MSR_ARCH_PERFMON_PERFCTR0,
.event_map = intel_pmu_event_map,
@@ -786,6 +788,8 @@ static __initconst struct x86_pmu intel_
.enable_all = intel_pmu_enable_all,
.enable = intel_pmu_enable_event,
.disable = intel_pmu_disable_event,
+ .hw_config = x86_hw_config,
+ .schedule_events = x86_schedule_events,
.eventsel = MSR_ARCH_PERFMON_EVENTSEL0,
.perfctr = MSR_ARCH_PERFMON_PERFCTR0,
.event_map = intel_pmu_event_map,
@@ -839,12 +843,13 @@ static __init int intel_pmu_init(void)
int version;
if (!cpu_has(&boot_cpu_data, X86_FEATURE_ARCH_PERFMON)) {
- /* check for P6 processor family */
- if (boot_cpu_data.x86 == 6) {
- return p6_pmu_init();
- } else {
+ switch (boot_cpu_data.x86) {
+ case 0x6:
+ return p6_pmu_init();
+ case 0xf:
+ return p4_pmu_init();
+ }
return -ENODEV;
- }
}
/*
Index: linux-2.6.git/arch/x86/kernel/cpu/perf_event_p4.c
=====================================================================
--- /dev/null
+++ linux-2.6.git/arch/x86/kernel/cpu/perf_event_p4.c
@@ -0,0 +1,607 @@
+/*
+ * Netburst Perfomance Events (P4, old Xeon)
+ *
+ * Copyright (C) 2010 Parallels, Inc., Cyrill Gorcunov <gorcunov@...nvz.org>
+ * Copyright (C) 2010 Intel Corporation, Lin Ming <ming.m.lin@...el.com>
+ *
+ * For licencing details see kernel-base/COPYING
+ */
+
+#ifdef CONFIG_CPU_SUP_INTEL
+
+#include <asm/perf_event_p4.h>
+
+/*
+ * array indices: 0,1 - HT threads, used with HT enabled cpu
+ */
+struct p4_event_template {
+ u32 opcode; /* ESCR event + CCCR selector */
+ u64 config; /* packed predefined bits */
+ int dep; /* upstream dependency event index */
+ unsigned int emask; /* ESCR EventMask */
+ unsigned int escr_msr[2]; /* ESCR MSR for this event */
+ unsigned int cntr[2]; /* counter index (offset) */
+};
+
+struct p4_pmu_res {
+ /* maps hw_conf::idx into template for ESCR sake */
+ struct p4_event_template *tpl[ARCH_P4_MAX_CCCR];
+};
+
+static DEFINE_PER_CPU(struct p4_pmu_res, p4_pmu_config);
+
+/*
+ * WARN: CCCR1 doesn't have a working enable bit so try to not
+ * use it if possible
+ *
+ * Also as only we start to support raw events we will need to
+ * append _all_ P4_EVENT_PACK'ed events here
+ */
+struct p4_event_template p4_templates[] = {
+ [0] = {
+ .opcode = P4_UOP_TYPE,
+ .config = 0,
+ .dep = -1,
+ .emask =
+ P4_EVENT_ATTR(P4_UOP_TYPE, TAGLOADS) |
+ P4_EVENT_ATTR(P4_UOP_TYPE, TAGSTORES),
+ .escr_msr = { MSR_P4_RAT_ESCR0, MSR_P4_RAT_ESCR1 },
+ .cntr = { 16, 17 },
+ },
+ [1] = {
+ .opcode = P4_GLOBAL_POWER_EVENTS,
+ .config = 0,
+ .dep = -1,
+ .emask =
+ P4_EVENT_ATTR(P4_GLOBAL_POWER_EVENTS, RUNNING),
+ .escr_msr = { MSR_P4_FSB_ESCR0, MSR_P4_FSB_ESCR1 },
+ .cntr = { 0, 2 },
+ },
+ [2] = {
+ .opcode = P4_INSTR_RETIRED,
+ .config = 0,
+ .dep = 0, /* needs front-end tagging */
+ .emask =
+ P4_EVENT_ATTR(P4_INSTR_RETIRED, NBOGUSNTAG) |
+ P4_EVENT_ATTR(P4_INSTR_RETIRED, NBOGUSTAG) |
+ P4_EVENT_ATTR(P4_INSTR_RETIRED, BOGUSNTAG) |
+ P4_EVENT_ATTR(P4_INSTR_RETIRED, BOGUSTAG),
+ .escr_msr = { MSR_P4_CRU_ESCR2, MSR_P4_CRU_ESCR3 },
+ .cntr = { 12, 14 },
+ },
+ [3] = {
+ .opcode = P4_BSQ_CACHE_REFERENCE,
+ .config = 0,
+ .dep = -1,
+ .emask =
+ P4_EVENT_ATTR(P4_BSQ_CACHE_REFERENCE, RD_2ndL_HITS) |
+ P4_EVENT_ATTR(P4_BSQ_CACHE_REFERENCE, RD_2ndL_HITE) |
+ P4_EVENT_ATTR(P4_BSQ_CACHE_REFERENCE, RD_2ndL_HITM) |
+ P4_EVENT_ATTR(P4_BSQ_CACHE_REFERENCE, RD_3rdL_HITS) |
+ P4_EVENT_ATTR(P4_BSQ_CACHE_REFERENCE, RD_3rdL_HITE) |
+ P4_EVENT_ATTR(P4_BSQ_CACHE_REFERENCE, RD_3rdL_HITM),
+ .escr_msr = { MSR_P4_BSU_ESCR0, MSR_P4_BSU_ESCR1 },
+ .cntr = { 0, 2 },
+ },
+ [4] = {
+ .opcode = P4_BSQ_CACHE_REFERENCE,
+ .config = 0,
+ .dep = -1,
+ .emask =
+ P4_EVENT_ATTR(P4_BSQ_CACHE_REFERENCE, RD_2ndL_MISS) |
+ P4_EVENT_ATTR(P4_BSQ_CACHE_REFERENCE, RD_3rdL_MISS) |
+ P4_EVENT_ATTR(P4_BSQ_CACHE_REFERENCE, WR_2ndL_MISS),
+ .escr_msr = { MSR_P4_BSU_ESCR0, MSR_P4_BSU_ESCR1 },
+ .cntr = { 0, 3 },
+ },
+ [5] = {
+ .opcode = P4_RETIRED_BRANCH_TYPE,
+ .config = 0,
+ .dep = -1,
+ .emask =
+ P4_EVENT_ATTR(P4_RETIRED_BRANCH_TYPE, CONDITIONAL) |
+ P4_EVENT_ATTR(P4_RETIRED_BRANCH_TYPE, CALL) |
+ P4_EVENT_ATTR(P4_RETIRED_BRANCH_TYPE, RETURN) |
+ P4_EVENT_ATTR(P4_RETIRED_BRANCH_TYPE, INDIRECT),
+ .escr_msr = { MSR_P4_TBPU_ESCR0, MSR_P4_TBPU_ESCR1 },
+ .cntr = { 4, 6 },
+ },
+ [6] = {
+ .opcode = P4_MISPRED_BRANCH_RETIRED,
+ .config = 0,
+ .dep = -1,
+ .emask =
+ P4_EVENT_ATTR(P4_MISPRED_BRANCH_RETIRED, NBOGUS),
+ .escr_msr = { MSR_P4_CRU_ESCR0, MSR_P4_CRU_ESCR1 },
+ .cntr = { 12, 14 },
+ },
+ [7] = {
+ .opcode = P4_FSB_DATA_ACTIVITY,
+ .config = p4_config_pack_cccr(P4_CCCR_EDGE | P4_CCCR_COMPARE),
+ .dep = -1,
+ .emask =
+ P4_EVENT_ATTR(P4_FSB_DATA_ACTIVITY, DRDY_DRV) |
+ P4_EVENT_ATTR(P4_FSB_DATA_ACTIVITY, DRDY_OWN),
+ .escr_msr = { MSR_P4_FSB_ESCR0, MSR_P4_FSB_ESCR1 },
+ .cntr = { 0, 2 },
+ },
+};
+
+static struct p4_event_template *p4_event_map[PERF_COUNT_HW_MAX] = {
+ /* non-halted CPU clocks */
+ [PERF_COUNT_HW_CPU_CYCLES] = &p4_templates[1],
+
+ /* retired instructions: dep on tagging the FSB */
+ [PERF_COUNT_HW_INSTRUCTIONS] = &p4_templates[2],
+
+ /* cache hits */
+ [PERF_COUNT_HW_CACHE_REFERENCES] = &p4_templates[3],
+
+ /* cache misses */
+ [PERF_COUNT_HW_CACHE_MISSES] = &p4_templates[4],
+
+ /* branch instructions retired */
+ [PERF_COUNT_HW_BRANCH_INSTRUCTIONS] = &p4_templates[5],
+
+ /* mispredicted branches retired */
+ [PERF_COUNT_HW_BRANCH_MISSES] = &p4_templates[6],
+
+ /* bus ready clocks (cpu is driving #DRDY_DRV\#DRDY_OWN): */
+ [PERF_COUNT_HW_BUS_CYCLES] = &p4_templates[7],
+};
+
+static u64 p4_pmu_event_map(int hw_event)
+{
+ struct p4_event_template *tpl;
+ u64 config;
+
+ if (hw_event > ARRAY_SIZE(p4_event_map)) {
+ printk_once(KERN_ERR "PMU: Incorrect event index\n");
+ return 0;
+ }
+ tpl = p4_event_map[hw_event];
+
+ /*
+ * fill config up according to
+ * a predefined event template
+ */
+ config = tpl->config;
+ config |= p4_config_pack_escr(P4_EVENT_UNPACK_EVENT(tpl->opcode) << P4_EVNTSEL_EVENT_SHIFT);
+ config |= p4_config_pack_escr(tpl->emask << P4_EVNTSEL_EVENTMASK_SHIFT);
+ config |= p4_config_pack_cccr(P4_EVENT_UNPACK_SELECTOR(tpl->opcode) << P4_CCCR_ESCR_SELECT_SHIFT);
+
+ /* 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;
+}
+
+/*
+ * Note that we still have 5 events (from global events SDM list)
+ * intersected in opcode+emask bits so we will need another
+ * scheme there do distinguish templates.
+ */
+static inline int p4_pmu_emask_match(unsigned int dst, unsigned int src)
+{
+ return dst & src;
+}
+
+static struct p4_event_template *p4_pmu_template_lookup(u64 config)
+{
+ u32 opcode = p4_config_unpack_opcode(config);
+ unsigned int emask = p4_config_unpack_emask(config);
+ unsigned int i;
+
+ for (i = 0; i < ARRAY_SIZE(p4_templates); i++) {
+ if (opcode == p4_templates[i].opcode &&
+ p4_pmu_emask_match(emask, p4_templates[i].emask))
+ return &p4_templates[i];
+ }
+
+ return NULL;
+}
+
+/*
+ * We don't control raw events so it's up to the caller
+ * to pass sane values (and we don't count the thread number
+ * on HT machine but allow HT-compatible specifics to be
+ * passed on)
+ */
+static u64 p4_pmu_raw_event(u64 hw_event)
+{
+ return hw_event &
+ (p4_config_pack_escr(P4_EVNTSEL_MASK_HT) |
+ p4_config_pack_cccr(P4_CCCR_MASK_HT));
+}
+
+static int p4_hw_config(struct perf_event_attr *attr, struct hw_perf_event *hwc)
+{
+ int cpu = raw_smp_processor_id();
+
+ /*
+ * the reason we use cpu that early is that: if we get scheduled
+ * first time on the same cpu -- we will not need swap thread
+ * specific flags in config (and will save some cpu cycles)
+ */
+
+ /* CCCR by default */
+ hwc->config = p4_config_pack_cccr(p4_default_cccr_conf(cpu));
+
+ /* 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));
+ return 0;
+}
+
+static inline void p4_pmu_clear_cccr_ovf(struct hw_perf_event *hwc)
+{
+ unsigned long dummy;
+
+ rdmsrl(hwc->config_base + hwc->idx, dummy);
+ if (dummy & P4_CCCR_OVF) {
+ (void)checking_wrmsrl(hwc->config_base + hwc->idx,
+ ((u64)dummy) & ~P4_CCCR_OVF);
+ }
+}
+
+static inline void p4_pmu_disable_event(struct perf_event *event)
+{
+ struct hw_perf_event *hwc = &event->hw;
+
+ /*
+ * If event gets disabled while counter is in overflowed
+ * state we need to clear P4_CCCR_OVF, otherwise interrupt get
+ * asserted again and again
+ */
+ (void)checking_wrmsrl(hwc->config_base + hwc->idx,
+ (u64)(p4_config_unpack_cccr(hwc->config)) &
+ ~P4_CCCR_ENABLE & ~P4_CCCR_OVF);
+}
+
+static void p4_pmu_disable_all(void)
+{
+ struct cpu_hw_events *cpuc = &__get_cpu_var(cpu_hw_events);
+ int idx;
+
+ for (idx = 0; idx < x86_pmu.num_events; idx++) {
+ struct perf_event *event = cpuc->events[idx];
+ if (!test_bit(idx, cpuc->active_mask))
+ continue;
+ p4_pmu_disable_event(event);
+ }
+}
+
+static void p4_pmu_enable_event(struct perf_event *event)
+{
+ struct hw_perf_event *hwc = &event->hw;
+ int thread = p4_ht_config_thread(hwc->config);
+ u64 escr_conf = p4_config_unpack_escr(p4_clear_ht_bit(hwc->config));
+ u64 escr_base;
+ struct p4_event_template *tpl;
+ struct p4_pmu_res *c;
+
+ /*
+ * some preparation work from per-cpu private fields
+ * since we need to find out which ESCR to use
+ */
+ c = &__get_cpu_var(p4_pmu_config);
+ tpl = c->tpl[hwc->idx];
+ if (!tpl) {
+ pr_crit("%s: Wrong index: %d\n", __func__, hwc->idx);
+ return;
+ }
+ escr_base = (u64)tpl->escr_msr[thread];
+
+ /*
+ * - we dont support cascaded counters yet
+ * - and counter 1 is broken (erratum)
+ */
+ WARN_ON_ONCE(p4_is_event_cascaded(hwc->config));
+ WARN_ON_ONCE(hwc->idx == 1);
+
+ (void)checking_wrmsrl(escr_base, escr_conf);
+ (void)checking_wrmsrl(hwc->config_base + hwc->idx,
+ (u64)(p4_config_unpack_cccr(hwc->config)) | P4_CCCR_ENABLE);
+}
+
+static void p4_pmu_enable_all(void)
+{
+ struct cpu_hw_events *cpuc = &__get_cpu_var(cpu_hw_events);
+ int idx;
+
+ for (idx = 0; idx < x86_pmu.num_events; idx++) {
+ struct perf_event *event = cpuc->events[idx];
+ if (!test_bit(idx, cpuc->active_mask))
+ continue;
+ p4_pmu_enable_event(event);
+ }
+}
+
+static int p4_pmu_handle_irq(struct pt_regs *regs)
+{
+ struct perf_sample_data data;
+ struct cpu_hw_events *cpuc;
+ struct perf_event *event;
+ struct hw_perf_event *hwc;
+ int idx, handled = 0;
+ u64 val;
+
+ data.addr = 0;
+ data.raw = NULL;
+
+ cpuc = &__get_cpu_var(cpu_hw_events);
+
+ for (idx = 0; idx < x86_pmu.num_events; idx++) {
+
+ if (!test_bit(idx, cpuc->active_mask))
+ continue;
+
+ event = cpuc->events[idx];
+ hwc = &event->hw;
+
+ WARN_ON_ONCE(hwc->idx != idx);
+
+ /*
+ * FIXME: Redundant call, actually not needed
+ * but just to check if we're screwed
+ */
+ p4_pmu_clear_cccr_ovf(hwc);
+
+ val = x86_perf_event_update(event);
+ if (val & (1ULL << (x86_pmu.event_bits - 1)))
+ continue;
+
+ /*
+ * event overflow
+ */
+ handled = 1;
+ data.period = event->hw.last_period;
+
+ if (!x86_perf_event_set_period(event))
+ continue;
+ if (perf_event_overflow(event, 1, &data, regs))
+ p4_pmu_disable_event(event);
+ }
+
+ if (handled) {
+ /* p4 quirk: unmask it again */
+ apic_write(APIC_LVTPC, apic_read(APIC_LVTPC) & ~APIC_LVT_MASKED);
+ inc_irq_stat(apic_perf_irqs);
+ }
+
+ return handled;
+}
+
+/*
+ * swap thread specific fields according to a thread
+ * we are going to run on
+ */
+static void p4_pmu_swap_config_ts(struct hw_perf_event *hwc, int cpu)
+{
+ u32 escr, cccr;
+
+ /*
+ * we either lucky and continue on same cpu or no HT support
+ */
+ if (!p4_should_swap_ts(hwc->config, cpu))
+ return;
+
+ /*
+ * the event is migrated from an another logical
+ * cpu, so we need to swap thread specific flags
+ */
+
+ escr = p4_config_unpack_escr(hwc->config);
+ cccr = p4_config_unpack_cccr(hwc->config);
+
+ if (p4_ht_thread(cpu)) {
+ cccr &= ~P4_CCCR_OVF_PMI_T0;
+ cccr |= P4_CCCR_OVF_PMI_T1;
+ if (escr & P4_EVNTSEL_T0_OS) {
+ escr &= ~P4_EVNTSEL_T0_OS;
+ escr |= P4_EVNTSEL_T1_OS;
+ }
+ if (escr & P4_EVNTSEL_T0_USR) {
+ escr &= ~P4_EVNTSEL_T0_USR;
+ escr |= P4_EVNTSEL_T1_USR;
+ }
+ hwc->config = p4_config_pack_escr(escr);
+ hwc->config |= p4_config_pack_cccr(cccr);
+ hwc->config |= P4_CONFIG_HT;
+ } else {
+ cccr &= ~P4_CCCR_OVF_PMI_T1;
+ cccr |= P4_CCCR_OVF_PMI_T0;
+ if (escr & P4_EVNTSEL_T1_OS) {
+ escr &= ~P4_EVNTSEL_T1_OS;
+ escr |= P4_EVNTSEL_T0_OS;
+ }
+ if (escr & P4_EVNTSEL_T1_USR) {
+ escr &= ~P4_EVNTSEL_T1_USR;
+ escr |= P4_EVNTSEL_T0_USR;
+ }
+ hwc->config = p4_config_pack_escr(escr);
+ hwc->config |= p4_config_pack_cccr(cccr);
+ hwc->config &= ~P4_CONFIG_HT;
+ }
+}
+
+/* ESCRs are not sequential in memory so we need a map */
+static unsigned int p4_escr_map[ARCH_P4_TOTAL_ESCR] = {
+ MSR_P4_ALF_ESCR0, /* 0 */
+ MSR_P4_ALF_ESCR1, /* 1 */
+ MSR_P4_BPU_ESCR0, /* 2 */
+ MSR_P4_BPU_ESCR1, /* 3 */
+ MSR_P4_BSU_ESCR0, /* 4 */
+ MSR_P4_BSU_ESCR1, /* 5 */
+ MSR_P4_CRU_ESCR0, /* 6 */
+ MSR_P4_CRU_ESCR1, /* 7 */
+ MSR_P4_CRU_ESCR2, /* 8 */
+ MSR_P4_CRU_ESCR3, /* 9 */
+ MSR_P4_CRU_ESCR4, /* 10 */
+ MSR_P4_CRU_ESCR5, /* 11 */
+ MSR_P4_DAC_ESCR0, /* 12 */
+ MSR_P4_DAC_ESCR1, /* 13 */
+ MSR_P4_FIRM_ESCR0, /* 14 */
+ MSR_P4_FIRM_ESCR1, /* 15 */
+ MSR_P4_FLAME_ESCR0, /* 16 */
+ MSR_P4_FLAME_ESCR1, /* 17 */
+ MSR_P4_FSB_ESCR0, /* 18 */
+ MSR_P4_FSB_ESCR1, /* 19 */
+ MSR_P4_IQ_ESCR0, /* 20 */
+ MSR_P4_IQ_ESCR1, /* 21 */
+ MSR_P4_IS_ESCR0, /* 22 */
+ MSR_P4_IS_ESCR1, /* 23 */
+ MSR_P4_ITLB_ESCR0, /* 24 */
+ MSR_P4_ITLB_ESCR1, /* 25 */
+ MSR_P4_IX_ESCR0, /* 26 */
+ MSR_P4_IX_ESCR1, /* 27 */
+ MSR_P4_MOB_ESCR0, /* 28 */
+ MSR_P4_MOB_ESCR1, /* 29 */
+ MSR_P4_MS_ESCR0, /* 30 */
+ MSR_P4_MS_ESCR1, /* 31 */
+ MSR_P4_PMH_ESCR0, /* 32 */
+ MSR_P4_PMH_ESCR1, /* 33 */
+ MSR_P4_RAT_ESCR0, /* 34 */
+ MSR_P4_RAT_ESCR1, /* 35 */
+ MSR_P4_SAAT_ESCR0, /* 36 */
+ MSR_P4_SAAT_ESCR1, /* 37 */
+ MSR_P4_SSU_ESCR0, /* 38 */
+ MSR_P4_SSU_ESCR1, /* 39 */
+ MSR_P4_TBPU_ESCR0, /* 40 */
+ MSR_P4_TBPU_ESCR1, /* 41 */
+ MSR_P4_TC_ESCR0, /* 42 */
+ MSR_P4_TC_ESCR1, /* 43 */
+ MSR_P4_U2L_ESCR0, /* 44 */
+ MSR_P4_U2L_ESCR1, /* 45 */
+};
+
+static int p4_get_escr_idx(unsigned int addr)
+{
+ unsigned int i;
+
+ for (i = 0; i < ARRAY_SIZE(p4_escr_map); i++) {
+ if (addr == p4_escr_map[i])
+ return i;
+ }
+
+ return -1;
+}
+
+static int p4_pmu_schedule_events(struct cpu_hw_events *cpuc, int n, int *assign)
+{
+ unsigned long used_mask[BITS_TO_LONGS(X86_PMC_IDX_MAX)];
+ unsigned long escr_mask[BITS_TO_LONGS(ARCH_P4_TOTAL_ESCR)];
+
+ struct hw_perf_event *hwc;
+ struct p4_event_template *tpl;
+ struct p4_pmu_res *c;
+ int cpu = raw_smp_processor_id();
+ int escr_idx, thread, i, num;
+
+ bitmap_zero(used_mask, X86_PMC_IDX_MAX);
+ bitmap_zero(escr_mask, ARCH_P4_TOTAL_ESCR);
+
+ c = &__get_cpu_var(p4_pmu_config);
+ /*
+ * Firstly find out which resource events are going
+ * to use, if ESCR+CCCR tuple is already borrowed
+ * then get out of here
+ */
+ for (i = 0, num = n; i < n; i++, num--) {
+ hwc = &cpuc->event_list[i]->hw;
+ tpl = p4_pmu_template_lookup(hwc->config);
+ if (!tpl)
+ goto done;
+ thread = p4_ht_thread(cpu);
+ escr_idx = p4_get_escr_idx(tpl->escr_msr[thread]);
+ if (escr_idx == -1)
+ goto done;
+
+ /* already allocated and remains on the same cpu */
+ if (hwc->idx != -1 && !p4_should_swap_ts(hwc->config, cpu)) {
+ if (assign)
+ assign[i] = hwc->idx;
+ /* upstream dependant event */
+ if (unlikely(tpl->dep != -1))
+ printk_once(KERN_WARNING "PMU: Dep events are "
+ "not implemented yet\n");
+ goto reserve;
+ }
+
+ /* it may be already borrowed */
+ if (test_bit(tpl->cntr[thread], used_mask) ||
+ test_bit(escr_idx, escr_mask))
+ goto done;
+
+ /*
+ * ESCR+CCCR+COUNTERs are available to use lets swap
+ * thread specific bits, push assigned bits
+ * back and save template into per-cpu
+ * area (which will allow us to find out the ESCR
+ * to be used at moment of "enable event via real MSR")
+ */
+ p4_pmu_swap_config_ts(hwc, cpu);
+ if (assign) {
+ assign[i] = tpl->cntr[thread];
+ c->tpl[assign[i]] = tpl;
+ }
+reserve:
+ set_bit(tpl->cntr[thread], used_mask);
+ set_bit(escr_idx, escr_mask);
+ }
+
+done:
+ return num ? -ENOSPC : 0;
+}
+
+static __initconst struct x86_pmu p4_pmu = {
+ .name = "Netburst P4/Xeon",
+ .handle_irq = p4_pmu_handle_irq,
+ .disable_all = p4_pmu_disable_all,
+ .enable_all = p4_pmu_enable_all,
+ .enable = p4_pmu_enable_event,
+ .disable = p4_pmu_disable_event,
+ .eventsel = MSR_P4_BPU_CCCR0,
+ .perfctr = MSR_P4_BPU_PERFCTR0,
+ .event_map = p4_pmu_event_map,
+ .raw_event = p4_pmu_raw_event,
+ .max_events = ARRAY_SIZE(p4_event_map),
+ .get_event_constraints = x86_get_event_constraints,
+ /*
+ * IF HT disabled we may need to use all
+ * ARCH_P4_MAX_CCCR counters simulaneously
+ * though leave it restricted at moment assuming
+ * HT is on
+ */
+ .num_events = ARCH_P4_MAX_CCCR,
+ .apic = 1,
+ .event_bits = 40,
+ .event_mask = (1ULL << 40) - 1,
+ .max_period = (1ULL << 39) - 1,
+ .hw_config = p4_hw_config,
+ .schedule_events = p4_pmu_schedule_events,
+};
+
+static __init int p4_pmu_init(void)
+{
+ unsigned int low, high;
+
+ /* If we get stripped -- indexig fails */
+ BUILD_BUG_ON(ARCH_P4_MAX_CCCR > X86_PMC_MAX_GENERIC);
+
+ rdmsr(MSR_IA32_MISC_ENABLE, low, high);
+ if (!(low & (1 << 7))) {
+ pr_cont("unsupported Netburst CPU model %d ",
+ boot_cpu_data.x86_model);
+ return -ENODEV;
+ }
+
+ pr_cont("Netburst events, ");
+
+ x86_pmu = p4_pmu;
+
+ return 0;
+}
+
+#endif /* CONFIG_CPU_SUP_INTEL */
Index: linux-2.6.git/arch/x86/kernel/cpu/perf_event_p6.c
=====================================================================
--- linux-2.6.git.orig/arch/x86/kernel/cpu/perf_event_p6.c
+++ linux-2.6.git/arch/x86/kernel/cpu/perf_event_p6.c
@@ -109,6 +109,8 @@ static __initconst struct x86_pmu p6_pmu
.enable_all = p6_pmu_enable_all,
.enable = p6_pmu_enable_event,
.disable = p6_pmu_disable_event,
+ .hw_config = x86_hw_config,
+ .schedule_events = x86_schedule_events,
.eventsel = MSR_P6_EVNTSEL0,
.perfctr = MSR_P6_PERFCTR0,
.event_map = p6_pmu_event_map,
--
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