tools/power turbostat: Fix /dev/cpu_dma_latency warnings

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[ Upstream commit 40aafc7d58 ]

When running as non-root the following error is seen in turbostat:

turbostat: fopen /dev/cpu_dma_latency
: Permission denied

turbostat and the man page have information on how to avoid other
permission errors, so these can be fixed the same way.

Provide better /dev/cpu_dma_latency warnings that provide instructions on
how to avoid the error, and update the man page.

Signed-off-by: Prarit Bhargava <prarit@redhat.com>
Cc: linux-pm@vger.kernel.org
Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

...

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Prarit Bhargava 2022-12-15 10:18:16 -05:00 • committed by Greg Kroah-Hartman

parent 4df748486c

commit 1b0878fe48

2 changed files with 3 additions and 1 deletions

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tools/power/x86/turbostat/turbostat.8

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tools/power/x86/turbostat/turbostat.c

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