diff options
| author | Marc Zyngier <Marc.Zyngier@arm.com> | 2012-11-22 13:05:55 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2012-11-23 13:01:30 +0000 |
| commit | c7cc504bc351e41e871e317ca7f032f4562f34ad (patch) | |
| tree | 4e3dc63c90467067eb55990c307bb125f3f79f5e | |
| parent | 82b5df7bf27ca6cf642499bc3bcae1c93b9ac4ba (diff) | |
ARM: 7584/1: perf: fix link error when CONFIG_HW_PERF_EVENTS is not selected
Commit e50c541 (ARM: perf: add guest vs host discrimination) broken the
link as perf_instruction_pointer and perf_misc_flags are not defined
when CONFIG_HW_PERF_EVENTS is not selected.
As it make little sense to try and profile a guest without any HW event,
just fallback to the original code when this config option is not selected.
Reported-by: Russell King <linux@arm.linux.org.uk>
Acked-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| -rw-r--r-- | arch/arm/include/asm/perf_event.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/arm/include/asm/perf_event.h b/arch/arm/include/asm/perf_event.h index 00416edecead..755877527cf9 100644 --- a/arch/arm/include/asm/perf_event.h +++ b/arch/arm/include/asm/perf_event.h @@ -21,9 +21,11 @@ #define C(_x) PERF_COUNT_HW_CACHE_##_x #define CACHE_OP_UNSUPPORTED 0xFFFF +#ifdef CONFIG_HW_PERF_EVENTS struct pt_regs; extern unsigned long perf_instruction_pointer(struct pt_regs *regs); extern unsigned long perf_misc_flags(struct pt_regs *regs); #define perf_misc_flags(regs) perf_misc_flags(regs) +#endif #endif /* __ARM_PERF_EVENT_H__ */ |