From: Michael Ellerman <mpe@ellerman.id.au>
To: Anju T <anju@linux.vnet.ibm.com>
Cc: khandual@linux.vnet.ibm.com, maddy@linux.vnet.ibm.com,
jolsa@redhat.com, dsahern@gmail.com, acme@redhat.com,
sukadev@linux.vnet.ibm.com, hemant@linux.vnet.ibm.com,
naveen.n.rao@linux.vnet.ibm.com, linux-kernel@vger.kernel.org,
linuxppc-dev@lists.ozlabs.org
Subject: Re: [PATCH V10 2/4] perf/powerpc: add support for sampling intr machine state
Date: Wed, 20 Jan 2016 21:40:26 +1100 [thread overview]
Message-ID: <1453286426.14751.19.camel@ellerman.id.au> (raw)
In-Reply-To: <1452508104-16507-3-git-send-email-anju@linux.vnet.ibm.com>
On Mon, 2016-01-11 at 15:58 +0530, Anju T wrote:
> diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
> index 9a7057e..c4ce60d 100644
> --- a/arch/powerpc/Kconfig
> +++ b/arch/powerpc/Kconfig
> @@ -119,6 +119,7 @@ config PPC
> select GENERIC_ATOMIC64 if PPC32
> select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
> select HAVE_PERF_EVENTS
> + select HAVE_PERF_REGS
> select HAVE_REGS_AND_STACK_ACCESS_API
> select HAVE_HW_BREAKPOINT if PERF_EVENTS && PPC_BOOK3S_64
> select ARCH_WANT_IPC_PARSE_VERSION
> diff --git a/arch/powerpc/perf/perf_regs.c b/arch/powerpc/perf/perf_regs.c
> new file mode 100644
> index 0000000..d32581763
> --- /dev/null
> +++ b/arch/powerpc/perf/perf_regs.c
...
> +
> +u64 perf_reg_abi(struct task_struct *task)
> +{
> + return PERF_SAMPLE_REGS_ABI_64;
What is this value used for exactly?
It seems like on 32-bit kernels we should be returning PERF_SAMPLE_REGS_ABI_32.
> +}
> +
> +void perf_get_regs_user(struct perf_regs *regs_user,
> + struct pt_regs *regs,
> + struct pt_regs *regs_user_copy)
> +{
> + regs_user->regs = task_pt_regs(current);
> + regs_user->abi = perf_reg_abi(current);
> +}
cheers
next prev parent reply other threads:[~2016-01-20 10:40 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-01-11 10:28 [PATCH V10 0/4] perf/powerpc: Add ability to sample intr machine state in powerpc Anju T
2016-01-11 10:28 ` [PATCH V10 1/4] perf/powerpc: assign an id to each powerpc register Anju T
2016-01-20 10:38 ` Michael Ellerman
2016-01-21 8:46 ` Anju T
2016-01-11 10:28 ` [PATCH V10 2/4] perf/powerpc: add support for sampling intr machine state Anju T
2016-01-20 10:40 ` Michael Ellerman [this message]
2016-01-25 3:28 ` Madhavan Srinivasan
2016-01-11 10:28 ` [PATCH v10 3/4] tools/perf: Map the ID values with register names Anju T
2016-01-20 10:46 ` Michael Ellerman
2016-01-21 10:02 ` Anju T
2016-01-11 10:28 ` [PATCH V1 4/4] tool/perf: Add sample_reg_mask to include all perf_regs regs Anju T
-- strict thread matches above, loose matches on Subject: below --
2016-01-11 5:59 [PATCH V10 0/4] perf/powerpc: Add ability to sample intr machine state in powerpc Anju T
2016-01-11 5:59 ` [PATCH V10 2/4] perf/powerpc: add support for sampling intr machine state Anju T
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