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Date: Wed, 6 Jan 2021 10:33:43 +0900 From: Namhyung Kim <namhyung@...nel.org> To: Arnaldo Carvalho de Melo <acme@...nel.org> Cc: Jiri Olsa <jolsa@...hat.com>, Ingo Molnar <mingo@...nel.org>, Peter Zijlstra <peterz@...radead.org>, Mark Rutland <mark.rutland@....com>, Alexander Shishkin <alexander.shishkin@...ux.intel.com>, LKML <linux-kernel@...r.kernel.org>, Stephane Eranian <eranian@...gle.com>, Ian Rogers <irogers@...gle.com>, Andi Kleen <ak@...ux.intel.com> Subject: Re: [PATCH 3/3] tools/lib/fs: Cache cgroupfs mount point Hi Arnaldo, On Tue, Dec 29, 2020 at 8:51 PM Arnaldo Carvalho de Melo <acme@...nel.org> wrote: > > Em Wed, Dec 16, 2020 at 06:05:56PM +0900, Namhyung Kim escreveu: > > Currently it parses the /proc file everytime it opens a file in the > > cgroupfs. Save the last result to avoid it (assuming it won't be > > changed between the accesses). > > Which is the most likely case, but can't we use something like inotify > to detect that and bail out or warn the user? Hmm.. looks doable. Will check. Thanks, Namhyung
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