a11106544f
This implements perf_event support for the Freescale embedded performance monitor, based on the existing perf_event.c that supports server/classic chips. Some limitations: - Performance monitor interrupts are regular EE interrupts, and thus you can't profile places with interrupts disabled. We may want to implement soft IRQ-disabling, with perfmon interrupts exempted and treated as NMIs. - When trying to schedule multiple event groups at once, and using restricted events, situations could arise where scheduling fails even though it would be possible. Consider three groups, each with two events. One group has restricted events, the others don't. The two non-restricted groups are scheduled, then one is removed, which happens to occupy the two counters that can't do restricted events. The remaining non-restricted group will not be moved to the non-restricted-capable counters to make room if the restricted group tries to be scheduled. Signed-off-by: Scott Wood <scottwood@freescale.com> Acked-by: Paul Mackerras <paulus@samba.org> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
72 lines
2.8 KiB
C
72 lines
2.8 KiB
C
/*
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* Contains register definitions for the Freescale Embedded Performance
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* Monitor.
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*/
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#ifdef __KERNEL__
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#ifndef __ASM_POWERPC_REG_FSL_EMB_H__
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#define __ASM_POWERPC_REG_FSL_EMB_H__
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#ifndef __ASSEMBLY__
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/* Performance Monitor Registers */
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#define mfpmr(rn) ({unsigned int rval; \
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asm volatile("mfpmr %0," __stringify(rn) \
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: "=r" (rval)); rval;})
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#define mtpmr(rn, v) asm volatile("mtpmr " __stringify(rn) ",%0" : : "r" (v))
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#endif /* __ASSEMBLY__ */
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/* Freescale Book E Performance Monitor APU Registers */
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#define PMRN_PMC0 0x010 /* Performance Monitor Counter 0 */
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#define PMRN_PMC1 0x011 /* Performance Monitor Counter 1 */
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#define PMRN_PMC2 0x012 /* Performance Monitor Counter 1 */
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#define PMRN_PMC3 0x013 /* Performance Monitor Counter 1 */
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#define PMRN_PMLCA0 0x090 /* PM Local Control A0 */
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#define PMRN_PMLCA1 0x091 /* PM Local Control A1 */
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#define PMRN_PMLCA2 0x092 /* PM Local Control A2 */
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#define PMRN_PMLCA3 0x093 /* PM Local Control A3 */
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#define PMLCA_FC 0x80000000 /* Freeze Counter */
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#define PMLCA_FCS 0x40000000 /* Freeze in Supervisor */
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#define PMLCA_FCU 0x20000000 /* Freeze in User */
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#define PMLCA_FCM1 0x10000000 /* Freeze when PMM==1 */
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#define PMLCA_FCM0 0x08000000 /* Freeze when PMM==0 */
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#define PMLCA_CE 0x04000000 /* Condition Enable */
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#define PMLCA_EVENT_MASK 0x00ff0000 /* Event field */
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#define PMLCA_EVENT_SHIFT 16
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#define PMRN_PMLCB0 0x110 /* PM Local Control B0 */
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#define PMRN_PMLCB1 0x111 /* PM Local Control B1 */
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#define PMRN_PMLCB2 0x112 /* PM Local Control B2 */
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#define PMRN_PMLCB3 0x113 /* PM Local Control B3 */
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#define PMLCB_THRESHMUL_MASK 0x0700 /* Threshold Multiple Field */
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#define PMLCB_THRESHMUL_SHIFT 8
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#define PMLCB_THRESHOLD_MASK 0x003f /* Threshold Field */
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#define PMLCB_THRESHOLD_SHIFT 0
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#define PMRN_PMGC0 0x190 /* PM Global Control 0 */
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#define PMGC0_FAC 0x80000000 /* Freeze all Counters */
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#define PMGC0_PMIE 0x40000000 /* Interrupt Enable */
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#define PMGC0_FCECE 0x20000000 /* Freeze countes on
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Enabled Condition or
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Event */
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#define PMRN_UPMC0 0x000 /* User Performance Monitor Counter 0 */
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#define PMRN_UPMC1 0x001 /* User Performance Monitor Counter 1 */
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#define PMRN_UPMC2 0x002 /* User Performance Monitor Counter 1 */
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#define PMRN_UPMC3 0x003 /* User Performance Monitor Counter 1 */
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#define PMRN_UPMLCA0 0x080 /* User PM Local Control A0 */
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#define PMRN_UPMLCA1 0x081 /* User PM Local Control A1 */
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#define PMRN_UPMLCA2 0x082 /* User PM Local Control A2 */
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#define PMRN_UPMLCA3 0x083 /* User PM Local Control A3 */
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#define PMRN_UPMLCB0 0x100 /* User PM Local Control B0 */
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#define PMRN_UPMLCB1 0x101 /* User PM Local Control B1 */
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#define PMRN_UPMLCB2 0x102 /* User PM Local Control B2 */
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#define PMRN_UPMLCB3 0x103 /* User PM Local Control B3 */
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#define PMRN_UPMGC0 0x180 /* User PM Global Control 0 */
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#endif /* __ASM_POWERPC_REG_FSL_EMB_H__ */
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#endif /* __KERNEL__ */
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