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[192.184.162.253]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-313c19cd3cbsm4132857a91.11.2025.06.13.19.20.37 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 13 Jun 2025 19:20:37 -0700 (PDT) From: Calvin Owens To: linux-kernel@vger.kernel.org Cc: linux-pm@vger.kernel.org, Len Brown Subject: [PATCH] tools/power turbostat: Fix MSRs with CONFIG_MULTIUSER=n Date: Fri, 13 Jun 2025 19:20:28 -0700 Message-ID: <81f4c402d1fda7c2419aac1148061a0789112e76.1749849645.git.calvin@wbinvd.org> X-Mailer: git-send-email 2.47.2 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Handle ENOSYS from cap_get_proc() in check_for_cap_sys_rawio(), so turbostat can display temperatures when running on kernels compiled without multiuser support. Signed-off-by: Calvin Owens --- tools/power/x86/turbostat/turbostat.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/tools/power/x86/turbostat/turbostat.c b/tools/power/x86/turbos= tat/turbostat.c index 925556b90770..f7d665913a52 100644 --- a/tools/power/x86/turbostat/turbostat.c +++ b/tools/power/x86/turbostat/turbostat.c @@ -6496,8 +6496,13 @@ int check_for_cap_sys_rawio(void) int ret =3D 0; =20 caps =3D cap_get_proc(); - if (caps =3D=3D NULL) + if (caps =3D=3D NULL) { + /* Support CONFIG_MULTIUSER=3Dn */ + if (errno =3D=3D ENOSYS) + return 0; + return 1; + } =20 if (cap_get_flag(caps, CAP_SYS_RAWIO, CAP_EFFECTIVE, &cap_flag_value)) { ret =3D 1; --=20 2.47.2