mirror of https://gitee.com/openkylin/linux.git
a669efc4a3
The hardware perf event driver and oprofile interpret the global cp0_perfcount_irq differently: in the hardware perf event driver it is an offset from MIPS_CPU_IRQ_BASE and in oprofile it is the actual IRQ number. This still works most of the time since MIPS_CPU_IRQ_BASE is usually 0, but is clearly wrong. Since the performance counter interrupt may vary from platform to platform like the C0 timer interrupt, add the optional get_c0_perfcount_int hook which returns the IRQ number of the performance counter. The hook should return < 0 if the performance counter interrupt is shared with the timer. If the hook is not present, the CPU vector reported in C0_IntCtl (cp0_perfcount_irq) is used. Signed-off-by: Andrew Bresticker <abrestic@chromium.org> Reviewed-by: Qais Yousef <qais.yousef@imgtec.com> Tested-by: Qais Yousef <qais.yousef@imgtec.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Jason Cooper <jason@lakedaemon.net> Cc: Andrew Bresticker <abrestic@chromium.org> Cc: Jeffrey Deans <jeffrey.deans@imgtec.com> Cc: Markos Chandras <markos.chandras@imgtec.com> Cc: Paul Burton <paul.burton@imgtec.com> Cc: Qais Yousef <qais.yousef@imgtec.com> Cc: Jonas Gorski <jogo@openwrt.org> Cc: John Crispin <blogic@openwrt.org> Cc: David Daney <ddaney.cavm@gmail.com> Cc: linux-mips@linux-mips.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/7805/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org> |
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| .. | ||
| Kconfig | ||
| Makefile | ||
| Platform | ||
| clock.c | ||
| common.c | ||
| common.h | ||
| dev-common.c | ||
| dev-common.h | ||
| dev-gpio-buttons.c | ||
| dev-gpio-buttons.h | ||
| dev-leds-gpio.c | ||
| dev-leds-gpio.h | ||
| dev-spi.c | ||
| dev-spi.h | ||
| dev-usb.c | ||
| dev-usb.h | ||
| dev-wmac.c | ||
| dev-wmac.h | ||
| early_printk.c | ||
| gpio.c | ||
| irq.c | ||
| mach-ap81.c | ||
| mach-ap121.c | ||
| mach-ap136.c | ||
| mach-db120.c | ||
| mach-pb44.c | ||
| mach-ubnt-xm.c | ||
| machtypes.h | ||
| pci.c | ||
| pci.h | ||
| prom.c | ||
| setup.c | ||