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| author | Madhavan Srinivasan <maddy@linux.vnet.ibm.com> | 2019-04-16 15:18:29 +0530 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2019-05-03 02:54:59 +1000 |
| commit | 216c3087a346db8d7c8a064d2b8f0f49e4694934 (patch) | |
| tree | 8577264a377637135b8c91ea82ab66159cd422de /arch/powerpc | |
| parent | dd50cf7cbc7bdd86483b797ac3d27b37d5aeeaa4 (diff) | |
| download | linux-216c3087a346db8d7c8a064d2b8f0f49e4694934.tar.gz linux-216c3087a346db8d7c8a064d2b8f0f49e4694934.tar.bz2 linux-216c3087a346db8d7c8a064d2b8f0f49e4694934.zip | |
powerpc/perf: Add privileged access check for thread_imc
Add code to restrict user access to thread_imc pmu since
some event report privilege level information.
Fixes: f74c89bd80fb3 ("powerpc/perf: Add thread IMC PMU support")
Signed-off-by: Madhavan Srinivasan <maddy@linux.vnet.ibm.com>
Signed-off-by: Anju T Sudhakar <anju@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc')
| -rw-r--r-- | arch/powerpc/perf/imc-pmu.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/powerpc/perf/imc-pmu.c b/arch/powerpc/perf/imc-pmu.c index 23092a359ce0..975837d85a80 100644 --- a/arch/powerpc/perf/imc-pmu.c +++ b/arch/powerpc/perf/imc-pmu.c @@ -864,6 +864,9 @@ static int thread_imc_event_init(struct perf_event *event) if (event->attr.type != event->pmu->type) return -ENOENT; + if (!capable(CAP_SYS_ADMIN)) + return -EACCES; + /* Sampling not supported */ if (event->hw.sample_period) return -EINVAL; |