To pick the changes from: dab741e0e02bd3c4 ("Add a "nosymfollow" mount option.") That ends up adding support for the new MS_NOSYMFOLLOW mount flag: $ tools/perf/trace/beauty/mount_flags.sh > before $ cp include/uapi/linux/mount.h tools/include/uapi/linux/mount.h $ tools/perf/trace/beauty/mount_flags.sh > after $ diff -u before after --- before 2020-11-03 08:51:28.117997454 -0300 +++ after 2020-11-03 08:51:38.992218869 -0300 @@ -7,6 +7,7 @@ [32 ? (ilog2(32) + 1) : 0] = "REMOUNT", [64 ? (ilog2(64) + 1) : 0] = "MANDLOCK", [128 ? (ilog2(128) + 1) : 0] = "DIRSYNC", + [256 ? (ilog2(256) + 1) : 0] = "NOSYMFOLLOW", [1024 ? (ilog2(1024) + 1) : 0] = "NOATIME", [2048 ? (ilog2(2048) + 1) : 0] = "NODIRATIME", [4096 ? (ilog2(4096) + 1) : 0] = "BIND", $ So now one can use it in --filter expressions for tracepoints. This silences this perf build warnings: Warning: Kernel ABI header at 'tools/include/uapi/linux/mount.h' differs from latest version at 'include/uapi/linux/mount.h' diff -u tools/include/uapi/linux/mount.h include/uapi/linux/mount.h
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| @@ -16,6 +16,7 @@ · 15 unmodified lines | ||
| 16 | 16 | #define MS_REMOUNT 32 /* Alter flags of a mounted FS */ |
| 17 | 17 | #define MS_MANDLOCK 64 /* Allow mandatory locks on an FS */ |
| 18 | 18 | #define MS_DIRSYNC 128 /* Directory modifications are synchronous */ |
| 19 | +#define MS_NOSYMFOLLOW 256 /* Do not follow symlinks */ | |
| 19 | 20 | #define MS_NOATIME 1024 /* Do not update access times. */ |
| 20 | 21 | #define MS_NODIRATIME 2048 /* Do not update directory access times */ |
| 21 | 22 | #define MS_BIND 4096 |