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| author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2026-07-18 16:53:38 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2026-07-18 16:53:38 +0200 |
| commit | 5895db67c12464003afd16c08049b73aa09e58ea (patch) | |
| tree | c3855a7ab889dffc2a02460f65abbbe6b800b6e6 /arch/x86/kernel/cpu/resctrl/monitor.c | |
| parent | 1c5f3df9481bb6275aeb079a8312d037da69715b (diff) | |
| parent | f89c296854b755a66657065c35b05406fc18264d (diff) | |
Merge v6.18.39linux-rolling-lts
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'arch/x86/kernel/cpu/resctrl/monitor.c')
| -rw-r--r-- | arch/x86/kernel/cpu/resctrl/monitor.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/arch/x86/kernel/cpu/resctrl/monitor.c b/arch/x86/kernel/cpu/resctrl/monitor.c index fe1a2aa53c16..4b2b539ddff9 100644 --- a/arch/x86/kernel/cpu/resctrl/monitor.c +++ b/arch/x86/kernel/cpu/resctrl/monitor.c @@ -243,14 +243,20 @@ int resctrl_arch_rmid_read(struct rdt_resource *r, struct rdt_mon_domain *d, u64 *val, void *ignored) { struct rdt_hw_mon_domain *hw_dom = resctrl_to_arch_mon_dom(d); - int cpu = cpumask_any(&d->hdr.cpu_mask); struct arch_mbm_state *am; u64 msr_val; u32 prmid; + int cpu; int ret; resctrl_arch_rmid_read_context_check(); + if (cpumask_empty(&d->hdr.cpu_mask)) { + pr_warn_once("Domain %d has no CPUs\n", d->hdr.id); + return -EINVAL; + } + + cpu = cpumask_any(&d->hdr.cpu_mask); prmid = logical_rmid_to_physical_rmid(cpu, rmid); ret = __rmid_read_phys(prmid, eventid, &msr_val); |