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Diffstat (limited to 'arch/powerpc/perf/core-book3s.c')
-rw-r--r--arch/powerpc/perf/core-book3s.c108
1 files changed, 75 insertions, 33 deletions
diff --git a/arch/powerpc/perf/core-book3s.c b/arch/powerpc/perf/core-book3s.c
index 01d70280d287..78fe34986594 100644
--- a/arch/powerpc/perf/core-book3s.c
+++ b/arch/powerpc/perf/core-book3s.c
@@ -37,12 +37,7 @@ struct cpu_hw_events {
struct perf_event *event[MAX_HWEVENTS];
u64 events[MAX_HWEVENTS];
unsigned int flags[MAX_HWEVENTS];
- /*
- * The order of the MMCR array is:
- * - 64-bit, MMCR0, MMCR1, MMCRA, MMCR2
- * - 32-bit, MMCR0, MMCR1, MMCR2
- */
- unsigned long mmcr[4];
+ struct mmcr_regs mmcr;
struct perf_event *limited_counter[MAX_LIMITED_HWCOUNTERS];
u8 limited_hwidx[MAX_LIMITED_HWCOUNTERS];
u64 alternatives[MAX_HWEVENTS][MAX_EVENT_ALTERNATIVES];
@@ -77,6 +72,11 @@ static unsigned int freeze_events_kernel = MMCR0_FCS;
/*
* 32-bit doesn't have MMCRA but does have an MMCR2,
* and a few other names are different.
+ * Also 32-bit doesn't have MMCR3, SIER2 and SIER3.
+ * Define them as zero knowing that any code path accessing
+ * these registers (via mtspr/mfspr) are done under ppmu flag
+ * check for PPMU_ARCH_31 and we will not enter that code path
+ * for 32-bit.
*/
#ifdef CONFIG_PPC32
@@ -90,7 +90,11 @@ static unsigned int freeze_events_kernel = MMCR0_FCS;
#define MMCR0_PMCC_U6 0
#define SPRN_MMCRA SPRN_MMCR2
+#define SPRN_MMCR3 0
+#define SPRN_SIER2 0
+#define SPRN_SIER3 0
#define MMCRA_SAMPLE_ENABLE 0
+#define MMCRA_BHRB_DISABLE 0
static inline unsigned long perf_ip_adjust(struct pt_regs *regs)
{
@@ -121,7 +125,7 @@ static void ebb_event_add(struct perf_event *event) { }
static void ebb_switch_out(unsigned long mmcr0) { }
static unsigned long ebb_switch_in(bool ebb, struct cpu_hw_events *cpuhw)
{
- return cpuhw->mmcr[0];
+ return cpuhw->mmcr.mmcr0;
}
static inline void power_pmu_bhrb_enable(struct perf_event *event) {}
@@ -466,8 +470,11 @@ static void power_pmu_bhrb_read(struct perf_event *event, struct cpu_hw_events *
* addresses at this point. Check the privileges before
* exporting it to userspace (avoid exposure of regions
* where we could have speculative execution)
+ * Incase of ISA v3.1, BHRB will capture only user-space
+ * addresses, hence include a check before filtering code
*/
- if (is_kernel_addr(addr) && perf_allow_kernel(&event->attr) != 0)
+ if (!(ppmu->flags & PPMU_ARCH_31) &&
+ is_kernel_addr(addr) && perf_allow_kernel(&event->attr) != 0)
continue;
/* Branches are read most recent first (ie. mfbhrb 0 is
@@ -586,11 +593,16 @@ static void ebb_switch_out(unsigned long mmcr0)
current->thread.sdar = mfspr(SPRN_SDAR);
current->thread.mmcr0 = mmcr0 & MMCR0_USER_MASK;
current->thread.mmcr2 = mfspr(SPRN_MMCR2) & MMCR2_USER_MASK;
+ if (ppmu->flags & PPMU_ARCH_31) {
+ current->thread.mmcr3 = mfspr(SPRN_MMCR3);
+ current->thread.sier2 = mfspr(SPRN_SIER2);
+ current->thread.sier3 = mfspr(SPRN_SIER3);
+ }
}
static unsigned long ebb_switch_in(bool ebb, struct cpu_hw_events *cpuhw)
{
- unsigned long mmcr0 = cpuhw->mmcr[0];
+ unsigned long mmcr0 = cpuhw->mmcr.mmcr0;
if (!ebb)
goto out;
@@ -624,7 +636,13 @@ static unsigned long ebb_switch_in(bool ebb, struct cpu_hw_events *cpuhw)
* unfreeze counters, it should not set exclude_xxx in its events and
* instead manage the MMCR2 entirely by itself.
*/
- mtspr(SPRN_MMCR2, cpuhw->mmcr[3] | current->thread.mmcr2);
+ mtspr(SPRN_MMCR2, cpuhw->mmcr.mmcr2 | current->thread.mmcr2);
+
+ if (ppmu->flags & PPMU_ARCH_31) {
+ mtspr(SPRN_MMCR3, current->thread.mmcr3);
+ mtspr(SPRN_SIER2, current->thread.sier2);
+ mtspr(SPRN_SIER3, current->thread.sier3);
+ }
out:
return mmcr0;
}
@@ -845,6 +863,11 @@ void perf_event_print_debug(void)
pr_info("EBBRR: %016lx BESCR: %016lx\n",
mfspr(SPRN_EBBRR), mfspr(SPRN_BESCR));
}
+
+ if (ppmu->flags & PPMU_ARCH_31) {
+ pr_info("MMCR3: %016lx SIER2: %016lx SIER3: %016lx\n",
+ mfspr(SPRN_MMCR3), mfspr(SPRN_SIER2), mfspr(SPRN_SIER3));
+ }
#endif
pr_info("SIAR: %016lx SDAR: %016lx SIER: %016lx\n",
mfspr(SPRN_SIAR), sdar, sier);
@@ -1196,7 +1219,7 @@ static void write_mmcr0(struct cpu_hw_events *cpuhw, unsigned long mmcr0)
static void power_pmu_disable(struct pmu *pmu)
{
struct cpu_hw_events *cpuhw;
- unsigned long flags, mmcr0, val;
+ unsigned long flags, mmcr0, val, mmcra;
if (!ppmu)
return;
@@ -1229,12 +1252,24 @@ static void power_pmu_disable(struct pmu *pmu)
mb();
isync();
+ val = mmcra = cpuhw->mmcr.mmcra;
+
/*
* Disable instruction sampling if it was enabled
*/
- if (cpuhw->mmcr[2] & MMCRA_SAMPLE_ENABLE) {
- mtspr(SPRN_MMCRA,
- cpuhw->mmcr[2] & ~MMCRA_SAMPLE_ENABLE);
+ if (cpuhw->mmcr.mmcra & MMCRA_SAMPLE_ENABLE)
+ val &= ~MMCRA_SAMPLE_ENABLE;
+
+ /* Disable BHRB via mmcra (BHRBRD) for p10 */
+ if (ppmu->flags & PPMU_ARCH_31)
+ val |= MMCRA_BHRB_DISABLE;
+
+ /*
+ * Write SPRN_MMCRA if mmcra has either disabled
+ * instruction sampling or BHRB.
+ */
+ if (val != mmcra) {
+ mtspr(SPRN_MMCRA, mmcra);
mb();
isync();
}
@@ -1308,18 +1343,20 @@ static void power_pmu_enable(struct pmu *pmu)
* (possibly updated for removal of events).
*/
if (!cpuhw->n_added) {
- mtspr(SPRN_MMCRA, cpuhw->mmcr[2] & ~MMCRA_SAMPLE_ENABLE);
- mtspr(SPRN_MMCR1, cpuhw->mmcr[1]);
+ mtspr(SPRN_MMCRA, cpuhw->mmcr.mmcra & ~MMCRA_SAMPLE_ENABLE);
+ mtspr(SPRN_MMCR1, cpuhw->mmcr.mmcr1);
+ if (ppmu->flags & PPMU_ARCH_31)
+ mtspr(SPRN_MMCR3, cpuhw->mmcr.mmcr3);
goto out_enable;
}
/*
* Clear all MMCR settings and recompute them for the new set of events.
*/
- memset(cpuhw->mmcr, 0, sizeof(cpuhw->mmcr));
+ memset(&cpuhw->mmcr, 0, sizeof(cpuhw->mmcr));
if (ppmu->compute_mmcr(cpuhw->events, cpuhw->n_events, hwc_index,
- cpuhw->mmcr, cpuhw->event)) {
+ &cpuhw->mmcr, cpuhw->event)) {
/* shouldn't ever get here */
printk(KERN_ERR "oops compute_mmcr failed\n");
goto out;
@@ -1333,11 +1370,11 @@ static void power_pmu_enable(struct pmu *pmu)
*/
event = cpuhw->event[0];
if (event->attr.exclude_user)
- cpuhw->mmcr[0] |= MMCR0_FCP;
+ cpuhw->mmcr.mmcr0 |= MMCR0_FCP;
if (event->attr.exclude_kernel)
- cpuhw->mmcr[0] |= freeze_events_kernel;
+ cpuhw->mmcr.mmcr0 |= freeze_events_kernel;
if (event->attr.exclude_hv)
- cpuhw->mmcr[0] |= MMCR0_FCHV;
+ cpuhw->mmcr.mmcr0 |= MMCR0_FCHV;
}
/*
@@ -1346,12 +1383,15 @@ static void power_pmu_enable(struct pmu *pmu)
* Then unfreeze the events.
*/
ppc_set_pmu_inuse(1);
- mtspr(SPRN_MMCRA, cpuhw->mmcr[2] & ~MMCRA_SAMPLE_ENABLE);
- mtspr(SPRN_MMCR1, cpuhw->mmcr[1]);
- mtspr(SPRN_MMCR0, (cpuhw->mmcr[0] & ~(MMCR0_PMC1CE | MMCR0_PMCjCE))
+ mtspr(SPRN_MMCRA, cpuhw->mmcr.mmcra & ~MMCRA_SAMPLE_ENABLE);
+ mtspr(SPRN_MMCR1, cpuhw->mmcr.mmcr1);
+ mtspr(SPRN_MMCR0, (cpuhw->mmcr.mmcr0 & ~(MMCR0_PMC1CE | MMCR0_PMCjCE))
| MMCR0_FC);
if (ppmu->flags & PPMU_ARCH_207S)
- mtspr(SPRN_MMCR2, cpuhw->mmcr[3]);
+ mtspr(SPRN_MMCR2, cpuhw->mmcr.mmcr2);
+
+ if (ppmu->flags & PPMU_ARCH_31)
+ mtspr(SPRN_MMCR3, cpuhw->mmcr.mmcr3);
/*
* Read off any pre-existing events that need to move
@@ -1402,7 +1442,7 @@ static void power_pmu_enable(struct pmu *pmu)
perf_event_update_userpage(event);
}
cpuhw->n_limited = n_lim;
- cpuhw->mmcr[0] |= MMCR0_PMXE | MMCR0_FCECE;
+ cpuhw->mmcr.mmcr0 |= MMCR0_PMXE | MMCR0_FCECE;
out_enable:
pmao_restore_workaround(ebb);
@@ -1418,9 +1458,9 @@ static void power_pmu_enable(struct pmu *pmu)
/*
* Enable instruction sampling if necessary
*/
- if (cpuhw->mmcr[2] & MMCRA_SAMPLE_ENABLE) {
+ if (cpuhw->mmcr.mmcra & MMCRA_SAMPLE_ENABLE) {
mb();
- mtspr(SPRN_MMCRA, cpuhw->mmcr[2]);
+ mtspr(SPRN_MMCRA, cpuhw->mmcr.mmcra);
}
out:
@@ -1550,7 +1590,7 @@ static void power_pmu_del(struct perf_event *event, int ef_flags)
cpuhw->flags[i-1] = cpuhw->flags[i];
}
--cpuhw->n_events;
- ppmu->disable_pmc(event->hw.idx - 1, cpuhw->mmcr);
+ ppmu->disable_pmc(event->hw.idx - 1, &cpuhw->mmcr);
if (event->hw.idx) {
write_pmc(event->hw.idx, 0);
event->hw.idx = 0;
@@ -1571,7 +1611,7 @@ static void power_pmu_del(struct perf_event *event, int ef_flags)
}
if (cpuhw->n_events == 0) {
/* disable exceptions if no events are running */
- cpuhw->mmcr[0] &= ~(MMCR0_PMXE | MMCR0_FCECE);
+ cpuhw->mmcr.mmcr0 &= ~(MMCR0_PMXE | MMCR0_FCECE);
}
if (has_branch_stack(event))
@@ -1795,7 +1835,7 @@ static void hw_perf_event_destroy(struct perf_event *event)
static int hw_perf_cache_event(u64 config, u64 *eventp)
{
unsigned long type, op, result;
- int ev;
+ u64 ev;
if (!ppmu->cache_events)
return -EINVAL;
@@ -2246,7 +2286,7 @@ static void __perf_event_interrupt(struct pt_regs *regs)
* XXX might want to use MSR.PM to keep the events frozen until
* we get back out of this interrupt.
*/
- write_mmcr0(cpuhw, cpuhw->mmcr[0]);
+ write_mmcr0(cpuhw, cpuhw->mmcr.mmcr0);
if (nmi)
nmi_exit();
@@ -2268,7 +2308,7 @@ static int power_pmu_prepare_cpu(unsigned int cpu)
if (ppmu) {
memset(cpuhw, 0, sizeof(*cpuhw));
- cpuhw->mmcr[0] = MMCR0_FC;
+ cpuhw->mmcr.mmcr0 = MMCR0_FC;
}
return 0;
}
@@ -2314,6 +2354,8 @@ static int __init init_ppc64_pmu(void)
return 0;
else if (!init_power9_pmu())
return 0;
+ else if (!init_power10_pmu())
+ return 0;
else if (!init_ppc970_pmu())
return 0;
else
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-27 01:13:39 +0100