From mboxrd@z Thu Jan 1 00:00:00 1970 From: will.deacon@arm.com (Will Deacon) Date: Tue, 1 Jul 2014 19:06:48 +0100 Subject: [PATCH 7/8] arm: perf: add more specific platform device IDs In-Reply-To: <1404227478-9645-8-git-send-email-mark.rutland@arm.com> References: <1404227478-9645-1-git-send-email-mark.rutland@arm.com> <1404227478-9645-8-git-send-email-mark.rutland@arm.com> Message-ID: <20140701180648.GY28164@arm.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Tue, Jul 01, 2014 at 04:11:17PM +0100, Mark Rutland wrote: > When described in DT, PMUs are given very specific compatible strings > (e.g. "arm,cortex-a15-pmu") which makes it very easy to reorganise the > way individual PMUs are handled (i.e. we can easily split them into > separate drivers). The same is not true of PMUs described in board > files, which are all use the platform_device_id "arm-pmu" and must all > be handled by the same driver. > > To enable splitting the ARMv6, ARMv7, and XScale PMU drivers we need > board files to identify which variant they provide. As a first step, > this patch adds new platform_device_id values: "armv6-pmu", "armv7-pmu, > and "xscale-pmu". > > Once board files are moved over and all existing uses of "arm-pmu" are > gone, we can split the existing driver apart. > > Signed-off-by: Mark Rutland > Cc: Will Deacon > --- > arch/arm/kernel/perf_event_cpu.c | 3 +++ > 1 file changed, 3 insertions(+) > > diff --git a/arch/arm/kernel/perf_event_cpu.c b/arch/arm/kernel/perf_event_cpu.c > index 191aff0..c63dc42 100644 > --- a/arch/arm/kernel/perf_event_cpu.c > +++ b/arch/arm/kernel/perf_event_cpu.c > @@ -241,6 +241,9 @@ static struct of_device_id cpu_pmu_of_device_ids[] = { > > static struct platform_device_id cpu_pmu_plat_device_ids[] = { > {.name = "arm-pmu"}, > + {.name = "armv6-pmu"}, > + {.name = "armv7-pmu"}, > + {.name = "xscale-pmu"}, Acked-by: Will Deacon Will