[v3,7/7] parisc/perf: open access for CAP_SYS_PERFMON privileged process
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Message ID 5d87f946-3588-7531-933b-fd1104ca0842@linux.intel.com
State Superseded
Headers show
  • Introduce CAP_SYS_PERFMON to secure system performance monitoring and observability
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Commit Message

Alexey Budankov Dec. 16, 2019, 8:05 p.m. UTC
Open access to monitoring for CAP_SYS_PERFMON privileged processes.
For backward compatibility reasons access to the monitoring remains open
for CAP_SYS_ADMIN privileged processes but CAP_SYS_ADMIN usage for secure
monitoring is discouraged with respect to CAP_SYS_PERFMON capability.

Signed-off-by: Alexey Budankov <alexey.budankov@linux.intel.com>
 arch/parisc/kernel/perf.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

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diff --git a/arch/parisc/kernel/perf.c b/arch/parisc/kernel/perf.c
index 676683641d00..c4208d027794 100644
--- a/arch/parisc/kernel/perf.c
+++ b/arch/parisc/kernel/perf.c
@@ -300,7 +300,7 @@  static ssize_t perf_write(struct file *file, const char __user *buf,
 		return -EFAULT;
-	if (!capable(CAP_SYS_ADMIN))
+	if (!perfmon_capable())
 		return -EACCES;
 	if (count != sizeof(uint32_t))