diff options
| author | Babu Moger <babu.moger@amd.com> | 2025-09-06 00:34:16 +0300 |
|---|---|---|
| committer | Borislav Petkov (AMD) <bp@alien8.de> | 2025-09-15 13:21:24 +0300 |
| commit | bd85310efd71b9e7809e1b95fe7a60fde42e62db (patch) | |
| tree | da6b53a06f8522290e05d5eed30e312f40193d04 /fs/resctrl/internal.h | |
| parent | f7a4fb22312646329ba21bc58958fd83fb9fc15d (diff) | |
| download | linux-bd85310efd71b9e7809e1b95fe7a60fde42e62db.tar.xz | |
fs/resctrl: Add the functionality to assign MBM events
When supported, "mbm_event" counter assignment mode offers "num_mbm_cntrs"
number of counters that can be assigned to RMID, event pairs and monitor
bandwidth usage as long as it is assigned.
Add the functionality to allocate and assign a counter to an RMID, event
pair in the domain. Also, add the helper rdtgroup_assign_cntrs() to assign
counters in the group.
Log the error message "Failed to allocate counter for <event> in domain
<id>" in /sys/fs/resctrl/info/last_cmd_status if all the counters are in
use. Exit on the first failure when assigning counters across all the
domains.
Signed-off-by: Babu Moger <babu.moger@amd.com>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Reviewed-by: Reinette Chatre <reinette.chatre@intel.com>
Link: https://lore.kernel.org/cover.1757108044.git.babu.moger@amd.com
Diffstat (limited to 'fs/resctrl/internal.h')
| -rw-r--r-- | fs/resctrl/internal.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/resctrl/internal.h b/fs/resctrl/internal.h index 1cddfff007a2..762705d7eb8d 100644 --- a/fs/resctrl/internal.h +++ b/fs/resctrl/internal.h @@ -396,6 +396,8 @@ int resctrl_num_mbm_cntrs_show(struct kernfs_open_file *of, struct seq_file *s, int resctrl_available_mbm_cntrs_show(struct kernfs_open_file *of, struct seq_file *s, void *v); +void rdtgroup_assign_cntrs(struct rdtgroup *rdtgrp); + #ifdef CONFIG_RESCTRL_FS_PSEUDO_LOCK int rdtgroup_locksetup_enter(struct rdtgroup *rdtgrp); |