linux-kernel - [PATCH v3 01/15] perf/mem: Introduce PERF_MEM_LVLNUM_{EXTN

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20220928095805.596-2-ravi.bangoria@amd.com>
Date:   Wed, 28 Sep 2022 15:27:51 +0530
From:   Ravi Bangoria <ravi.bangoria@....com>
To:     <peterz@...radead.org>, <acme@...nel.org>
CC:     <ravi.bangoria@....com>, <jolsa@...nel.org>, <namhyung@...nel.org>,
        <eranian@...gle.com>, <irogers@...gle.com>, <jmario@...hat.com>,
        <leo.yan@...aro.org>, <alisaidi@...zon.com>, <ak@...ux.intel.com>,
        <kan.liang@...ux.intel.com>, <dave.hansen@...ux.intel.com>,
        <hpa@...or.com>, <mingo@...hat.com>, <mark.rutland@....com>,
        <alexander.shishkin@...ux.intel.com>, <tglx@...utronix.de>,
        <bp@...en8.de>, <x86@...nel.org>,
        <linux-perf-users@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <sandipan.das@....com>, <ananth.narayan@....com>,
        <kim.phillips@....com>, <santosh.shukla@....com>
Subject: [PATCH v3 01/15] perf/mem: Introduce PERF_MEM_LVLNUM_{EXTN_MEM|IO}

PERF_MEM_LVLNUM_EXTN_MEM which can be used to indicate accesses to
extension memory like CXL etc. PERF_MEM_LVL_IO can be used for IO
accesses but it can not distinguish between local and remote IO.
Introduce new field PERF_MEM_LVLNUM_IO which can be clubbed with
PERF_MEM_REMOTE_REMOTE to indicate Remote IO accesses.

Signed-off-by: Ravi Bangoria <ravi.bangoria@....com>
---
 include/uapi/linux/perf_event.h | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/include/uapi/linux/perf_event.h b/include/uapi/linux/perf_event.h
index e639c74cf5fb..4ae3c249f675 100644
--- a/include/uapi/linux/perf_event.h
+++ b/include/uapi/linux/perf_event.h
@@ -1336,7 +1336,9 @@ union perf_mem_data_src {
 #define PERF_MEM_LVLNUM_L2	0x02 /* L2 */
 #define PERF_MEM_LVLNUM_L3	0x03 /* L3 */
 #define PERF_MEM_LVLNUM_L4	0x04 /* L4 */
-/* 5-0xa available */
+/* 5-0x8 available */
+#define PERF_MEM_LVLNUM_EXTN_MEM 0x09 /* Extension memory */
+#define PERF_MEM_LVLNUM_IO	0x0a /* I/O */
 #define PERF_MEM_LVLNUM_ANY_CACHE 0x0b /* Any cache */
 #define PERF_MEM_LVLNUM_LFB	0x0c /* LFB */
 #define PERF_MEM_LVLNUM_RAM	0x0d /* RAM */
-- 
2.31.1