linux-kernel - Re: [PATCH] ARC: Enable PERF_EVENTS in nSIM driven platforms

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Date:   Fri, 28 Oct 2016 13:16:17 -0700
From:   Vineet Gupta <Vineet.Gupta1@...opsys.com>
To:     Alexey Brodkin <Alexey.Brodkin@...opsys.com>,
        <linux-snps-arc@...ts.infradead.org>
CC:     <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] ARC: Enable PERF_EVENTS in nSIM driven platforms

On 10/28/2016 01:41 AM, Alexey Brodkin wrote:
> Now when we have properly working performance counters in nSIM
> even with interrupt support (fix should be a part of upcoming
> nSIM engineering build 2016.12-005) we may enable perf support
> by default for all platforms that use nSIM for ARC cores simulation.
> 
> Note all defconfigs were regenerated with "make savedefconfig"
> which led to some clean-ups in nsimosci_hs_smp_defconfig:
> CONFIG_FRAMEBUFFER_CONSOLE=y was removed because it is automatically
> selected now by DRM.
> 
> Signed-off-by: Alexey Brodkin <abrodkin@...opsys.com>
> ---
>  arch/arc/configs/nsim_700_defconfig        | 1 +
>  arch/arc/configs/nsim_hs_defconfig         | 1 +
>  arch/arc/configs/nsim_hs_smp_defconfig     | 1 +
>  arch/arc/configs/nsimosci_defconfig        | 1 +

The DTB corresponding to nsimosci_defconfig needs to include snps,arc700-pct ?

>  arch/arc/configs/nsimosci_hs_defconfig     | 1 +
>  arch/arc/configs/nsimosci_hs_smp_defconfig | 3 +--
>  6 files changed, 6 insertions(+), 2 deletions(-)
> 
> diff --git a/arch/arc/configs/nsim_700_defconfig b/arch/arc/configs/nsim_700_defconfig
> index 7314f538847b..b0066a749d4c 100644
> --- a/arch/arc/configs/nsim_700_defconfig
> +++ b/arch/arc/configs/nsim_700_defconfig
> @@ -14,6 +14,7 @@ CONFIG_BLK_DEV_INITRD=y
>  CONFIG_INITRAMFS_SOURCE="../arc_initramfs/"
>  CONFIG_KALLSYMS_ALL=y
>  CONFIG_EMBEDDED=y
> +CONFIG_PERF_EVENTS=y
>  # CONFIG_SLUB_DEBUG is not set
>  # CONFIG_COMPAT_BRK is not set
>  CONFIG_KPROBES=y
> diff --git a/arch/arc/configs/nsim_hs_defconfig b/arch/arc/configs/nsim_hs_defconfig
> index 65ab9fbf83f2..ebe9ebb92933 100644
> --- a/arch/arc/configs/nsim_hs_defconfig
> +++ b/arch/arc/configs/nsim_hs_defconfig
> @@ -14,6 +14,7 @@ CONFIG_BLK_DEV_INITRD=y
>  CONFIG_INITRAMFS_SOURCE="../../arc_initramfs_hs/"
>  CONFIG_KALLSYMS_ALL=y
>  CONFIG_EMBEDDED=y
> +CONFIG_PERF_EVENTS=y
>  # CONFIG_SLUB_DEBUG is not set
>  # CONFIG_COMPAT_BRK is not set
>  CONFIG_KPROBES=y
> diff --git a/arch/arc/configs/nsim_hs_smp_defconfig b/arch/arc/configs/nsim_hs_smp_defconfig
> index 3b3990cddbe1..4bde43278be6 100644
> --- a/arch/arc/configs/nsim_hs_smp_defconfig
> +++ b/arch/arc/configs/nsim_hs_smp_defconfig
> @@ -12,6 +12,7 @@ CONFIG_BLK_DEV_INITRD=y
>  CONFIG_INITRAMFS_SOURCE="../arc_initramfs_hs/"
>  CONFIG_KALLSYMS_ALL=y
>  CONFIG_EMBEDDED=y
> +CONFIG_PERF_EVENTS=y
>  # CONFIG_SLUB_DEBUG is not set
>  # CONFIG_COMPAT_BRK is not set
>  CONFIG_KPROBES=y
> diff --git a/arch/arc/configs/nsimosci_defconfig b/arch/arc/configs/nsimosci_defconfig
> index 98cf20933bbb..f6fb3d26557e 100644
> --- a/arch/arc/configs/nsimosci_defconfig
> +++ b/arch/arc/configs/nsimosci_defconfig
> @@ -14,6 +14,7 @@ CONFIG_BLK_DEV_INITRD=y
>  CONFIG_INITRAMFS_SOURCE="../arc_initramfs/"
>  CONFIG_KALLSYMS_ALL=y
>  CONFIG_EMBEDDED=y
> +CONFIG_PERF_EVENTS=y
>  # CONFIG_SLUB_DEBUG is not set
>  # CONFIG_COMPAT_BRK is not set
>  CONFIG_KPROBES=y
> diff --git a/arch/arc/configs/nsimosci_hs_defconfig b/arch/arc/configs/nsimosci_hs_defconfig
> index ddf8b96d494e..b9f0fe00044b 100644
> --- a/arch/arc/configs/nsimosci_hs_defconfig
> +++ b/arch/arc/configs/nsimosci_hs_defconfig
> @@ -14,6 +14,7 @@ CONFIG_BLK_DEV_INITRD=y
>  CONFIG_INITRAMFS_SOURCE="../arc_initramfs_hs/"
>  CONFIG_KALLSYMS_ALL=y
>  CONFIG_EMBEDDED=y
> +CONFIG_PERF_EVENTS=y
>  # CONFIG_SLUB_DEBUG is not set
>  # CONFIG_COMPAT_BRK is not set
>  CONFIG_KPROBES=y
> diff --git a/arch/arc/configs/nsimosci_hs_smp_defconfig b/arch/arc/configs/nsimosci_hs_smp_defconfig
> index ceb90745326e..6da71ba253a9 100644
> --- a/arch/arc/configs/nsimosci_hs_smp_defconfig
> +++ b/arch/arc/configs/nsimosci_hs_smp_defconfig
> @@ -10,6 +10,7 @@ CONFIG_IKCONFIG_PROC=y
>  # CONFIG_PID_NS is not set
>  CONFIG_BLK_DEV_INITRD=y
>  CONFIG_INITRAMFS_SOURCE="../arc_initramfs_hs/"
> +CONFIG_PERF_EVENTS=y
>  # CONFIG_COMPAT_BRK is not set
>  CONFIG_KPROBES=y
>  CONFIG_MODULES=y
> @@ -34,7 +35,6 @@ CONFIG_INET=y
>  # CONFIG_INET_XFRM_MODE_TRANSPORT is not set
>  # CONFIG_INET_XFRM_MODE_TUNNEL is not set
>  # CONFIG_INET_XFRM_MODE_BEET is not set
> -# CONFIG_INET_LRO is not set
>  # CONFIG_IPV6 is not set
>  # CONFIG_WIRELESS is not set
>  CONFIG_DEVTMPFS=y
> @@ -72,7 +72,6 @@ CONFIG_SERIAL_OF_PLATFORM=y
>  # CONFIG_HWMON is not set
>  CONFIG_DRM=y
>  CONFIG_DRM_ARCPGU=y
> -CONFIG_FRAMEBUFFER_CONSOLE=y
>  CONFIG_LOGO=y
>  # CONFIG_HID is not set
>  # CONFIG_USB_SUPPORT is not set
>