perf top: Support lookup of symbols in other mount namespaces.
authorKrister Johansen <kjlx@templeofstupid.com>
Thu, 6 Jul 2017 01:48:12 +0000 (18:48 -0700)
committerArnaldo Carvalho de Melo <acme@redhat.com>
Wed, 26 Jul 2017 01:43:16 +0000 (22:43 -0300)
commit868a832918f621b7576655c00067f20326ef3931
tree22b346df9980f3de063735e3a5087b2f9a86539a
parent2b04e0f88291c0dc7e12459bd3c3661d42209b4e
perf top: Support lookup of symbols in other mount namespaces.

The perf top command needs to unshare its fs from the helper threads in
order to successfully setns(2) during its symbol lookup.  It also needs
to impelement a force flag to ignore ownership of perf-<pid>.map files.

Signed-off-by: Krister Johansen <kjlx@templeofstupid.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Brendan Gregg <brendan.d.gregg@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas-Mich Richter <tmricht@linux.vnet.ibm.com>
Link: http://lkml.kernel.org/r/1499305693-1599-6-git-send-email-kjlx@templeofstupid.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
tools/perf/Documentation/perf-top.txt
tools/perf/builtin-top.c