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From c5a3dd0fb1e256772d83f19bc458e79b2cf5baf7 Mon Sep 17 00:00:00 2001
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From: Jake Hunsaker <jhunsake@redhat.com>
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Date: Fri, 3 Jul 2020 12:24:10 -0400
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Subject: [PATCH] [pci] Update gating for lspci commands
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It was reported that certain arches may create subdir structures under
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/proc/bus/pci differently than others - most notably that the first
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device subdir could be '0000:00' instead of just '00'.
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Rather than chase these different layouts, update the gating check for
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running `lspci` commands to being that /proc/bus/pci exists and it has
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more than just the `devices` file present, as this file may be present
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but empty when nothing else exists under `/proc/bus/pci`.
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This is the legacy-3.9 backport from #2138
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Signed-off-by: Jake Hunsaker <jhunsake@redhat.com>
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---
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sos/plugins/pci.py | 12 +++++++++++-
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1 file changed, 11 insertions(+), 1 deletion(-)
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diff --git a/sos/plugins/pci.py b/sos/plugins/pci.py
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index ac90f09d..053307cd 100644
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--- a/sos/plugins/pci.py
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+++ b/sos/plugins/pci.py
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@@ -17,6 +17,16 @@ class Pci(Plugin, RedHatPlugin, UbuntuPlugin, DebianPlugin):
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plugin_name = "pci"
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profiles = ('hardware', 'system')
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+ def check_for_bus_devices(self):
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+ if not os.path.isdir('/proc/bus/pci'):
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+ return False
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+ # ensure that more than just the 'devices' file, which can be empty,
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+ # exists in the pci directory. This implies actual devices are present
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+ content = os.listdir('/proc/bus/pci')
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+ if 'devices' in content:
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+ content.remove('devices')
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+ return len(content) > 0
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+
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def setup(self):
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self.add_copy_spec([
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"/proc/ioports",
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@@ -24,7 +34,7 @@ class Pci(Plugin, RedHatPlugin, UbuntuPlugin, DebianPlugin):
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"/proc/bus/pci"
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])
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- if os.path.isdir("/proc/bus/pci/00"):
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+ if self.check_for_bus_devices():
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self.add_cmd_output("lspci -nnvv", root_symlink="lspci")
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self.add_cmd_output("lspci -tv")
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--
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2.26.2
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