diff options
| author | Ravi Bangoria <ravi.bangoria@amd.com> | 2026-02-16 07:25:30 +0300 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2026-02-28 14:03:29 +0300 |
| commit | b2ea0f541d354c10186a894e8bf5bf83abf8a517 (patch) | |
| tree | 6d38bec74b87f554cb103536a265352ca5f719e4 | |
| parent | 8ae68bfec97596a3656ce8d0a7b1240d888eab10 (diff) | |
| download | linux-b2ea0f541d354c10186a894e8bf5bf83abf8a517.tar.xz | |
perf/amd/ibs: Advertise remote socket capability
IBS OP on future hardware can indicate data source from remote socket
as well. Advertise this capability to userspace so that userspace tools
can decode IBS data accordingly.
Signed-off-by: Ravi Bangoria <ravi.bangoria@amd.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://patch.msgid.link/20260216042530.1546-8-ravi.bangoria@amd.com
| -rw-r--r-- | arch/x86/events/amd/ibs.c | 19 | ||||
| -rw-r--r-- | arch/x86/include/asm/amd/ibs.h | 3 |
2 files changed, 21 insertions, 1 deletions
diff --git a/arch/x86/events/amd/ibs.c b/arch/x86/events/amd/ibs.c index 0a8313ea6331..eeb607b84dda 100644 --- a/arch/x86/events/amd/ibs.c +++ b/arch/x86/events/amd/ibs.c @@ -730,6 +730,7 @@ PMU_EVENT_ATTR_STRING(fetchlat, ibs_fetch_lat_format, "config1:0-10"); PMU_EVENT_ATTR_STRING(fetchlat, ibs_fetch_lat_cap, "1"); PMU_EVENT_ATTR_STRING(strmst, ibs_op_strmst_format, "config1:12"); PMU_EVENT_ATTR_STRING(strmst, ibs_op_strmst_cap, "1"); +PMU_EVENT_ATTR_STRING(rmtsocket, ibs_op_rmtsocket_cap, "1"); static umode_t zen4_ibs_extensions_is_visible(struct kobject *kobj, struct attribute *attr, int i) @@ -750,6 +751,12 @@ ibs_op_strmst_is_visible(struct kobject *kobj, struct attribute *attr, int i) } static umode_t +ibs_op_rmtsocket_is_visible(struct kobject *kobj, struct attribute *attr, int i) +{ + return ibs_caps & IBS_CAPS_STRMST_RMTSOCKET ? attr->mode : 0; +} + +static umode_t ibs_op_ldlat_is_visible(struct kobject *kobj, struct attribute *attr, int i) { return ibs_caps & IBS_CAPS_OPLDLAT ? attr->mode : 0; @@ -802,6 +809,11 @@ static struct attribute *ibs_op_strmst_cap_attrs[] = { NULL, }; +static struct attribute *ibs_op_rmtsocket_cap_attrs[] = { + &ibs_op_rmtsocket_cap.attr.attr, + NULL, +}; + static struct attribute_group group_fetch_formats = { .name = "format", .attrs = fetch_attrs, @@ -849,6 +861,12 @@ static struct attribute_group group_ibs_op_strmst_cap = { .is_visible = ibs_op_strmst_is_visible, }; +static struct attribute_group group_ibs_op_rmtsocket_cap = { + .name = "caps", + .attrs = ibs_op_rmtsocket_cap_attrs, + .is_visible = ibs_op_rmtsocket_is_visible, +}; + static const struct attribute_group *fetch_attr_groups[] = { &group_fetch_formats, &empty_caps_group, @@ -938,6 +956,7 @@ static const struct attribute_group *op_attr_update[] = { &group_ibs_op_dtlb_pgsize_cap, &group_ibs_op_strmst_cap, &group_ibs_op_strmst_format, + &group_ibs_op_rmtsocket_cap, NULL, }; diff --git a/arch/x86/include/asm/amd/ibs.h b/arch/x86/include/asm/amd/ibs.h index 020916eb7b4e..4eac36c42db6 100644 --- a/arch/x86/include/asm/amd/ibs.h +++ b/arch/x86/include/asm/amd/ibs.h @@ -100,7 +100,8 @@ union ibs_op_data2 { cache_hit_st:1, /* 5: cache hit state */ data_src_hi:2, /* 6-7: data source high */ strm_st:1, /* 8: streaming store */ - reserved1:55; /* 9-63: reserved */ + rmt_socket:1, /* 9: remote socket */ + reserved1:54; /* 10-63: reserved */ }; }; |