#include <linux/tick.h>
#include <linux/init.h>
#include <linux/cpu.h>
+#include <linux/perf_event.h>
#include <linux/elfcore.h>
#include <linux/sysrq.h>
#include <linux/nmi.h>
#include <asm/syscalls.h>
#include <asm/irq_regs.h>
#include <asm/smp.h>
+#include <asm/pcr.h>
#include "kstack.h"
show_stack(current, (unsigned long *) regs->u_regs[UREG_FP]);
}
-struct global_reg_snapshot global_reg_snapshot[NR_CPUS];
-static DEFINE_SPINLOCK(global_reg_snapshot_lock);
+union global_cpu_snapshot global_cpu_snapshot[NR_CPUS];
+static DEFINE_SPINLOCK(global_cpu_snapshot_lock);
static void __global_reg_self(struct thread_info *tp, struct pt_regs *regs,
int this_cpu)
{
+ struct global_reg_snapshot *rp;
+
flushw_all();
- global_reg_snapshot[this_cpu].tstate = regs->tstate;
- global_reg_snapshot[this_cpu].tpc = regs->tpc;
- global_reg_snapshot[this_cpu].tnpc = regs->tnpc;
- global_reg_snapshot[this_cpu].o7 = regs->u_regs[UREG_I7];
+ rp = &global_cpu_snapshot[this_cpu].reg;
+
+ rp->tstate = regs->tstate;
+ rp->tpc = regs->tpc;
+ rp->tnpc = regs->tnpc;
+ rp->o7 = regs->u_regs[UREG_I7];
if (regs->tstate & TSTATE_PRIV) {
struct reg_window *rw;
rw = (struct reg_window *)
(regs->u_regs[UREG_FP] + STACK_BIAS);
if (kstack_valid(tp, (unsigned long) rw)) {
- global_reg_snapshot[this_cpu].i7 = rw->ins[7];
+ rp->i7 = rw->ins[7];
rw = (struct reg_window *)
(rw->ins[6] + STACK_BIAS);
if (kstack_valid(tp, (unsigned long) rw))
- global_reg_snapshot[this_cpu].rpc = rw->ins[7];
+ rp->rpc = rw->ins[7];
}
} else {
- global_reg_snapshot[this_cpu].i7 = 0;
- global_reg_snapshot[this_cpu].rpc = 0;
+ rp->i7 = 0;
+ rp->rpc = 0;
}
- global_reg_snapshot[this_cpu].thread = tp;
+ rp->thread = tp;
}
/* In order to avoid hangs we do not try to synchronize with the
if (!regs)
regs = tp->kregs;
- spin_lock_irqsave(&global_reg_snapshot_lock, flags);
+ spin_lock_irqsave(&global_cpu_snapshot_lock, flags);
- memset(global_reg_snapshot, 0, sizeof(global_reg_snapshot));
+ memset(global_cpu_snapshot, 0, sizeof(global_cpu_snapshot));
this_cpu = raw_smp_processor_id();
smp_fetch_global_regs();
for_each_online_cpu(cpu) {
- struct global_reg_snapshot *gp = &global_reg_snapshot[cpu];
+ struct global_reg_snapshot *gp = &global_cpu_snapshot[cpu].reg;
__global_reg_poll(gp);
}
}
- memset(global_reg_snapshot, 0, sizeof(global_reg_snapshot));
+ memset(global_cpu_snapshot, 0, sizeof(global_cpu_snapshot));
- spin_unlock_irqrestore(&global_reg_snapshot_lock, flags);
+ spin_unlock_irqrestore(&global_cpu_snapshot_lock, flags);
}
#ifdef CONFIG_MAGIC_SYSRQ
static struct sysrq_key_op sparc_globalreg_op = {
.handler = sysrq_handle_globreg,
- .help_msg = "Globalregs",
+ .help_msg = "global-regs(Y)",
.action_msg = "Show Global CPU Regs",
};
-static int __init sparc_globreg_init(void)
+static void __global_pmu_self(int this_cpu)
+{
+ struct global_pmu_snapshot *pp;
+ int i, num;
+
+ pp = &global_cpu_snapshot[this_cpu].pmu;
+
+ num = 1;
+ if (tlb_type == hypervisor &&
+ sun4v_chip_type >= SUN4V_CHIP_NIAGARA4)
+ num = 4;
+
+ for (i = 0; i < num; i++) {
+ pp->pcr[i] = pcr_ops->read_pcr(i);
+ pp->pic[i] = pcr_ops->read_pic(i);
+ }
+}
+
+static void __global_pmu_poll(struct global_pmu_snapshot *pp)
+{
+ int limit = 0;
+
+ while (!pp->pcr[0] && ++limit < 100) {
+ barrier();
+ udelay(1);
+ }
+}
+
+static void pmu_snapshot_all_cpus(void)
{
- return register_sysrq_key('y', &sparc_globalreg_op);
+ unsigned long flags;
+ int this_cpu, cpu;
+
+ spin_lock_irqsave(&global_cpu_snapshot_lock, flags);
+
+ memset(global_cpu_snapshot, 0, sizeof(global_cpu_snapshot));
+
+ this_cpu = raw_smp_processor_id();
+
+ __global_pmu_self(this_cpu);
+
+ smp_fetch_global_pmu();
+
+ for_each_online_cpu(cpu) {
+ struct global_pmu_snapshot *pp = &global_cpu_snapshot[cpu].pmu;
+
+ __global_pmu_poll(pp);
+
+ printk("%c CPU[%3d]: PCR[%08lx:%08lx:%08lx:%08lx] PIC[%08lx:%08lx:%08lx:%08lx]\n",
+ (cpu == this_cpu ? '*' : ' '), cpu,
+ pp->pcr[0], pp->pcr[1], pp->pcr[2], pp->pcr[3],
+ pp->pic[0], pp->pic[1], pp->pic[2], pp->pic[3]);
+ }
+
+ memset(global_cpu_snapshot, 0, sizeof(global_cpu_snapshot));
+
+ spin_unlock_irqrestore(&global_cpu_snapshot_lock, flags);
+}
+
+static void sysrq_handle_globpmu(int key)
+{
+ pmu_snapshot_all_cpus();
+}
+
+static struct sysrq_key_op sparc_globalpmu_op = {
+ .handler = sysrq_handle_globpmu,
+ .help_msg = "global-pmu(X)",
+ .action_msg = "Show Global PMU Regs",
+};
+
+static int __init sparc_sysrq_init(void)
+{
+ int ret = register_sysrq_key('y', &sparc_globalreg_op);
+
+ if (!ret)
+ ret = register_sysrq_key('x', &sparc_globalpmu_op);
+ return ret;
}
-core_initcall(sparc_globreg_init);
+core_initcall(sparc_sysrq_init);
#endif
extern unsigned long xcall_flush_tlb_pending;
extern unsigned long xcall_flush_tlb_kernel_range;
extern unsigned long xcall_fetch_glob_regs;
+extern unsigned long xcall_fetch_glob_pmu;
+extern unsigned long xcall_fetch_glob_pmu_n4;
extern unsigned long xcall_receive_signal;
extern unsigned long xcall_new_mmu_context_version;
#ifdef CONFIG_KGDB
smp_cross_call(&xcall_fetch_glob_regs, 0, 0, 0);
}
+void smp_fetch_global_pmu(void)
+{
+ if (tlb_type == hypervisor &&
+ sun4v_chip_type >= SUN4V_CHIP_NIAGARA4)
+ smp_cross_call(&xcall_fetch_glob_pmu_n4, 0, 0, 0);
+ else
+ smp_cross_call(&xcall_fetch_glob_pmu, 0, 0, 0);
+}
+
/* We know that the window frames of the user have been flushed
* to the stack before we get here because all callers of us
* are flush_tlb_*() routines, and these run after flush_cache_*()
.globl xcall_fetch_glob_regs
xcall_fetch_glob_regs:
- sethi %hi(global_reg_snapshot), %g1
- or %g1, %lo(global_reg_snapshot), %g1
+ sethi %hi(global_cpu_snapshot), %g1
+ or %g1, %lo(global_cpu_snapshot), %g1
__GET_CPUID(%g2)
sllx %g2, 6, %g3
add %g1, %g3, %g1
stx %g3, [%g1 + GR_SNAP_THREAD]
retry
+ .globl xcall_fetch_glob_pmu
+xcall_fetch_glob_pmu:
+ sethi %hi(global_cpu_snapshot), %g1
+ or %g1, %lo(global_cpu_snapshot), %g1
+ __GET_CPUID(%g2)
+ sllx %g2, 6, %g3
+ add %g1, %g3, %g1
+ rd %pic, %g7
+ stx %g7, [%g1 + (4 * 8)]
+ rd %pcr, %g7
+ stx %g7, [%g1 + (0 * 8)]
+ retry
+
+ .globl xcall_fetch_glob_pmu_n4
+xcall_fetch_glob_pmu_n4:
+ sethi %hi(global_cpu_snapshot), %g1
+ or %g1, %lo(global_cpu_snapshot), %g1
+ __GET_CPUID(%g2)
+ sllx %g2, 6, %g3
+ add %g1, %g3, %g1
+
+ ldxa [%g0] ASI_PIC, %g7
+ stx %g7, [%g1 + (4 * 8)]
+ mov 0x08, %g3
+ ldxa [%g3] ASI_PIC, %g7
+ stx %g7, [%g1 + (5 * 8)]
+ mov 0x10, %g3
+ ldxa [%g3] ASI_PIC, %g7
+ stx %g7, [%g1 + (6 * 8)]
+ mov 0x18, %g3
+ ldxa [%g3] ASI_PIC, %g7
+ stx %g7, [%g1 + (7 * 8)]
+
+ mov %o0, %g2
+ mov %o1, %g3
+ mov %o5, %g7
+
+ mov HV_FAST_VT_GET_PERFREG, %o5
+ mov 3, %o0
+ ta HV_FAST_TRAP
+ stx %o1, [%g1 + (3 * 8)]
+ mov HV_FAST_VT_GET_PERFREG, %o5
+ mov 2, %o0
+ ta HV_FAST_TRAP
+ stx %o1, [%g1 + (2 * 8)]
+ mov HV_FAST_VT_GET_PERFREG, %o5
+ mov 1, %o0
+ ta HV_FAST_TRAP
+ stx %o1, [%g1 + (1 * 8)]
+ mov HV_FAST_VT_GET_PERFREG, %o5
+ mov 0, %o0
+ ta HV_FAST_TRAP
+ stx %o1, [%g1 + (0 * 8)]
+
+ mov %g2, %o0
+ mov %g3, %o1
+ mov %g7, %o5
+
+ retry
+
#ifdef DCACHE_ALIASING_POSSIBLE
.align 32
.globl xcall_flush_dcache_page_cheetah
projects / can-eth-gw-linux.git / commitdiff