From: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com> To: "Srivatsa S. Bhat" <srivatsa.bhat@linux.vnet.ibm.com> Cc: linux-acpi@vger.kernel.org, linux-kernel@vger.kernel.org, lenb@kernel.org, toshi.kani@hp.com Subject: Re: [PATCH v3 1/3] acpi : cpu hot-remove returns error when cpu_down() fails Date: Fri, 13 Jul 2012 15:29:12 +0900 [thread overview] Message-ID: <4FFFC038.5070106@jp.fujitsu.com> (raw) In-Reply-To: <4FFEC3E7.1030606@linux.vnet.ibm.com> Hi Srivatsa, 2012/07/12 21:32, Srivatsa S. Bhat wrote: > On 07/12/2012 04:52 PM, Yasuaki Ishimatsu wrote: >> Even if cpu_down() fails, acpi_processor_remove() continues to remove the cpu. >> But in this case, it should return error number since some process may run on >> the cpu. If the cpu has a running process and the cpu is turned the power off, >> the system may not work well. >> >> Signed-off-by: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com> >> > > Reviewed-by: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com> Thank you for reviewing. Thanks, Yasuaki Ishimatsu > Regards, > Srivatsa S. Bhat > >> --- >> drivers/acpi/processor_driver.c | 18 ++++++++++++------ >> 1 file changed, 12 insertions(+), 6 deletions(-) >> >> Index: linux-3.5-rc4/drivers/acpi/processor_driver.c >> =================================================================== >> --- linux-3.5-rc4.orig/drivers/acpi/processor_driver.c 2012-06-25 04:53:04.000000000 +0900 >> +++ linux-3.5-rc4/drivers/acpi/processor_driver.c 2012-07-05 21:02:58.711285382 +0900 >> @@ -610,7 +610,7 @@ err_free_pr: >> static int acpi_processor_remove(struct acpi_device *device, int type) >> { >> struct acpi_processor *pr = NULL; >> - >> + int ret; >> >> if (!device || !acpi_driver_data(device)) >> return -EINVAL; >> @@ -621,8 +621,9 @@ static int acpi_processor_remove(struct >> goto free; >> >> if (type == ACPI_BUS_REMOVAL_EJECT) { >> - if (acpi_processor_handle_eject(pr)) >> - return -EINVAL; >> + ret = acpi_processor_handle_eject(pr); >> + if (ret) >> + return ret; >> } >> >> acpi_processor_power_exit(pr, device); >> @@ -841,12 +842,17 @@ static acpi_status acpi_processor_hotadd >> >> static int acpi_processor_handle_eject(struct acpi_processor *pr) >> { >> - if (cpu_online(pr->id)) >> - cpu_down(pr->id); >> + int ret; >> + >> + if (cpu_online(pr->id)) { >> + ret = cpu_down(pr->id); >> + if (ret) >> + return ret; >> + } >> >> arch_unregister_cpu(pr->id); >> acpi_unmap_lsapic(pr->id); >> - return (0); >> + return ret; >> } >> #else >> static acpi_status acpi_processor_hotadd_init(struct acpi_processor *pr) >> > > -- > To unsubscribe from this list: send the line "unsubscribe linux-acpi" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html >
WARNING: multiple messages have this Message-ID (diff)
From: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com> To: "Srivatsa S. Bhat" <srivatsa.bhat@linux.vnet.ibm.com> Cc: <linux-acpi@vger.kernel.org>, <linux-kernel@vger.kernel.org>, <lenb@kernel.org>, <toshi.kani@hp.com> Subject: Re: [PATCH v3 1/3] acpi : cpu hot-remove returns error when cpu_down() fails Date: Fri, 13 Jul 2012 15:29:12 +0900 [thread overview] Message-ID: <4FFFC038.5070106@jp.fujitsu.com> (raw) In-Reply-To: <4FFEC3E7.1030606@linux.vnet.ibm.com> Hi Srivatsa, 2012/07/12 21:32, Srivatsa S. Bhat wrote: > On 07/12/2012 04:52 PM, Yasuaki Ishimatsu wrote: >> Even if cpu_down() fails, acpi_processor_remove() continues to remove the cpu. >> But in this case, it should return error number since some process may run on >> the cpu. If the cpu has a running process and the cpu is turned the power off, >> the system may not work well. >> >> Signed-off-by: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com> >> > > Reviewed-by: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com> Thank you for reviewing. Thanks, Yasuaki Ishimatsu > Regards, > Srivatsa S. Bhat > >> --- >> drivers/acpi/processor_driver.c | 18 ++++++++++++------ >> 1 file changed, 12 insertions(+), 6 deletions(-) >> >> Index: linux-3.5-rc4/drivers/acpi/processor_driver.c >> =================================================================== >> --- linux-3.5-rc4.orig/drivers/acpi/processor_driver.c 2012-06-25 04:53:04.000000000 +0900 >> +++ linux-3.5-rc4/drivers/acpi/processor_driver.c 2012-07-05 21:02:58.711285382 +0900 >> @@ -610,7 +610,7 @@ err_free_pr: >> static int acpi_processor_remove(struct acpi_device *device, int type) >> { >> struct acpi_processor *pr = NULL; >> - >> + int ret; >> >> if (!device || !acpi_driver_data(device)) >> return -EINVAL; >> @@ -621,8 +621,9 @@ static int acpi_processor_remove(struct >> goto free; >> >> if (type == ACPI_BUS_REMOVAL_EJECT) { >> - if (acpi_processor_handle_eject(pr)) >> - return -EINVAL; >> + ret = acpi_processor_handle_eject(pr); >> + if (ret) >> + return ret; >> } >> >> acpi_processor_power_exit(pr, device); >> @@ -841,12 +842,17 @@ static acpi_status acpi_processor_hotadd >> >> static int acpi_processor_handle_eject(struct acpi_processor *pr) >> { >> - if (cpu_online(pr->id)) >> - cpu_down(pr->id); >> + int ret; >> + >> + if (cpu_online(pr->id)) { >> + ret = cpu_down(pr->id); >> + if (ret) >> + return ret; >> + } >> >> arch_unregister_cpu(pr->id); >> acpi_unmap_lsapic(pr->id); >> - return (0); >> + return ret; >> } >> #else >> static acpi_status acpi_processor_hotadd_init(struct acpi_processor *pr) >> > > -- > To unsubscribe from this list: send the line "unsubscribe linux-acpi" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html >
next prev parent reply other threads:[~2012-07-13 6:29 UTC|newest] Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top 2012-07-12 11:22 [PATCH v3 1/3] acpi : cpu hot-remove returns error when cpu_down() fails Yasuaki Ishimatsu 2012-07-12 11:22 ` Yasuaki Ishimatsu 2012-07-12 11:27 ` [PATCH v3 2/3] acpi : prevent cpu from becoming online Yasuaki Ishimatsu 2012-07-12 11:27 ` Yasuaki Ishimatsu 2012-07-12 11:40 ` [PATCH v3 2/3 RESEND] " Yasuaki Ishimatsu 2012-07-12 11:40 ` Yasuaki Ishimatsu 2012-07-12 12:41 ` Srivatsa S. Bhat 2012-07-13 6:24 ` Yasuaki Ishimatsu 2012-07-13 6:24 ` Yasuaki Ishimatsu 2012-07-12 16:49 ` Toshi Kani 2012-07-13 6:27 ` Yasuaki Ishimatsu 2012-07-13 6:27 ` Yasuaki Ishimatsu 2012-07-12 11:28 ` [PATCH v3 3/3] acpi : acpi_bus_trim() stops removing devices when failing to remove the device Yasuaki Ishimatsu 2012-07-12 11:28 ` Yasuaki Ishimatsu 2012-07-12 16:50 ` Toshi Kani 2012-07-13 7:16 ` Yasuaki Ishimatsu 2012-07-13 7:16 ` Yasuaki Ishimatsu 2012-10-09 8:02 ` Wen Congyang 2012-10-09 8:24 ` Yasuaki Ishimatsu 2012-10-09 8:24 ` Yasuaki Ishimatsu 2012-07-12 12:32 ` [PATCH v3 1/3] acpi : cpu hot-remove returns error when cpu_down() fails Srivatsa S. Bhat 2012-07-13 6:29 ` Yasuaki Ishimatsu [this message] 2012-07-13 6:29 ` Yasuaki Ishimatsu 2012-07-12 16:48 ` Toshi Kani 2012-07-13 6:26 ` Yasuaki Ishimatsu 2012-07-13 6:26 ` Yasuaki Ishimatsu
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