| Message ID | 20201218174011.340514-27-s.miroshnichenko@yadro.com (mailing list archive) |
|---|---|
| State | New, archived |
| Delegated to: | Bjorn Helgaas |
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From: Sergei Miroshnichenko <s.miroshnichenko@yadro.com>
To: <linux-pci@vger.kernel.org>
CC: Bjorn Helgaas <helgaas@kernel.org>, Lukas Wunner <lukas@wunner.de>,
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<linux@yadro.com>, Sergei Miroshnichenko <s.miroshnichenko@yadro.com>
Subject: [PATCH v9 26/26] resource: increase max nesting level for /proc/iomem
Date: Fri, 18 Dec 2020 20:40:11 +0300
Message-ID: <20201218174011.340514-27-s.miroshnichenko@yadro.com>
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|
| Series |
PCI: Allow BAR movement during boot and hotplug
|
expand
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diff --git a/kernel/resource.c b/kernel/resource.c index 833394f9c608..4b3b378fed19 100644 --- a/kernel/resource.c +++ b/kernel/resource.c @@ -83,7 +83,7 @@ static void *r_next(struct seq_file *m, void *v, loff_t *pos) #ifdef CONFIG_PROC_FS -enum { MAX_IORES_LEVEL = 5 }; +enum { MAX_IORES_LEVEL = 15 }; static void *r_start(struct seq_file *m, loff_t *pos) __acquires(resource_lock)
Current value of maximum indentation for /proc/iomem and /proc/ioports is not enough for comfortable PCI resources debugging when several bridges are nested, so increase it from 5 to 15: % lspci -tv +-[0000:80]-+-00.0-[81]-- | +-01.0-[82]-- | +-03.0-[83-99]----00.0-[84-99]----04.0-[85-99]----00.0-[86-99]--+-00.0-[87]-- | | +-04.0-[88]-- | | +-08.0-[89]-- | | +-09.0-[8a]-- | | +-0c.0-[8b-95]----00.0-[8c-95]--+-00.0-[8d]-- | | | +-04.0-[8e]-- | | | +-08.0-[8f]-- | | | +-09.0-[90]-- | | | +-0c.0-[91]-- | | | +-10.0-[92]--+-00.0 | | | | \-00.1 % sudo cat /proc/iomem ... f9000000000-f907fffffff : PCI Bus 0000:80 f9000100000-f90010fffff : PCI Bus 0000:83 f9000100000-f90010fffff : PCI Bus 0000:84 f9000100000-f90010fffff : PCI Bus 0000:85 f9000100000-f90010fffff : PCI Bus 0000:86 f9000100000-f90009fffff : PCI Bus 0000:8b f9000100000-f90009fffff : PCI Bus 0000:8c f9000100000-f90003fffff : PCI Bus 0000:92 f9000100000-f90001fffff : 0000:92:00.0 f9000100000-f90001fffff : qla2xx f9000200000-f9002ffffff : 0000:92:00.1 f9000200000-f90002fffff : qla2xxx f9000300000-f9000301fff : 0000:92:00.0 f9000300000-f9000301fff : qla2xxx f9000302000-f9000303fff : 0000:92:00.1 f9000302000-f9000303fff : qla2xxx f9000304000-f9000304fff : 0000:92:00.0 f9000304000-f9000304fff : qla2xxx f9000305000-f9000305fff : 0000:92:00.1 f9000305000-f9000305fff : qla2xxx Signed-off-by: Sergei Miroshnichenko <s.miroshnichenko@yadro.com> --- kernel/resource.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)