https://github.com/torvalds/linux
Revision 2dc91abe03d8ce6dd7f9251faffafca5f6b9e85d authored by Nick Piggin on 17 August 2010, 18:37:37 UTC, committed by Al Viro on 18 August 2010, 12:35:48 UTC
lglock: introduce special lglock and brlock spin locks This patch introduces "local-global" locks (lglocks). These can be used to: - Provide fast exclusive access to per-CPU data, with exclusive access to another CPU's data allowed but possibly subject to contention, and to provide very slow exclusive access to all per-CPU data. - Or to provide very fast and scalable read serialisation, and to provide very slow exclusive serialisation of data (not necessarily per-CPU data). Brlocks are also implemented as a short-hand notation for the latter use case. Thanks to Paul for local/global naming convention. Cc: linux-kernel@vger.kernel.org Cc: Al Viro <viro@ZenIV.linux.org.uk> Cc: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com> Signed-off-by: Nick Piggin <npiggin@kernel.dk> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
1 parent d996b62
Tip revision: 2dc91abe03d8ce6dd7f9251faffafca5f6b9e85d authored by Nick Piggin on 17 August 2010, 18:37:37 UTC
lglock: introduce special lglock and brlock spin locks
lglock: introduce special lglock and brlock spin locks
Tip revision: 2dc91ab
| File | Mode | Size |
|---|---|---|
| basic | ||
| coccinelle | ||
| dtc | ||
| genksyms | ||
| kconfig | ||
| ksymoops | ||
| mod | ||
| package | ||
| rt-tester | ||
| selinux | ||
| tracing | ||
| .gitignore | -rw-r--r-- | 75 bytes |
| Kbuild.include | -rw-r--r-- | 9.5 KB |
| Lindent | -rwxr-xr-x | 460 bytes |
| Makefile | -rw-r--r-- | 934 bytes |
| Makefile.build | -rw-r--r-- | 12.1 KB |
| Makefile.clean | -rw-r--r-- | 3.2 KB |
| Makefile.fwinst | -rw-r--r-- | 2.0 KB |
| Makefile.headersinst | -rw-r--r-- | 3.2 KB |
| Makefile.help | -rw-r--r-- | 68 bytes |
| Makefile.host | -rw-r--r-- | 6.5 KB |
| Makefile.lib | -rw-r--r-- | 9.1 KB |
| Makefile.modbuiltin | -rw-r--r-- | 1.8 KB |
| Makefile.modinst | -rw-r--r-- | 1.0 KB |
| Makefile.modpost | -rw-r--r-- | 5.1 KB |
| bin2c.c | -rw-r--r-- | 702 bytes |
| bloat-o-meter | -rwxr-xr-x | 1.7 KB |
| bootgraph.pl | -rw-r--r-- | 5.6 KB |
| checkincludes.pl | -rwxr-xr-x | 1.8 KB |
| checkkconfigsymbols.sh | -rwxr-xr-x | 1.8 KB |
| checkpatch.pl | -rwxr-xr-x | 75.5 KB |
| checkstack.pl | -rwxr-xr-x | 5.2 KB |
| checksyscalls.sh | -rwxr-xr-x | 5.5 KB |
| checkversion.pl | -rwxr-xr-x | 1.8 KB |
| cleanfile | -rwxr-xr-x | 3.4 KB |
| cleanpatch | -rwxr-xr-x | 5.0 KB |
| coccicheck | -rwxr-xr-x | 2.0 KB |
| config | -rwxr-xr-x | 2.6 KB |
| conmakehash.c | -rw-r--r-- | 6.0 KB |
| decodecode | -rwxr-xr-x | 1.9 KB |
| diffconfig | -rwxr-xr-x | 3.6 KB |
| export_report.pl | -rw-r--r-- | 4.2 KB |
| extract-ikconfig | -rwxr-xr-x | 1.3 KB |
| gcc-version.sh | -rw-r--r-- | 819 bytes |
| gcc-x86_32-has-stack-protector.sh | -rw-r--r-- | 183 bytes |
| gcc-x86_64-has-stack-protector.sh | -rw-r--r-- | 199 bytes |
| gen_initramfs_list.sh | -rw-r--r-- | 7.1 KB |
| get_maintainer.pl | -rwxr-xr-x | 34.3 KB |
| gfp-translate | -rw-r--r-- | 1.5 KB |
| headerdep.pl | -rwxr-xr-x | 3.5 KB |
| headers.sh | -rwxr-xr-x | 512 bytes |
| headers_check.pl | -rw-r--r-- | 2.7 KB |
| headers_install.pl | -rw-r--r-- | 1.5 KB |
| kallsyms.c | -rw-r--r-- | 15.2 KB |
| kernel-doc | -rwxr-xr-x | 61.1 KB |
| makelst | -rwxr-xr-x | 773 bytes |
| markup_oops.pl | -rw-r--r-- | 8.1 KB |
| mkcompile_h | -rwxr-xr-x | 2.5 KB |
| mkmakefile | -rw-r--r-- | 1.1 KB |
| mksysmap | -rw-r--r-- | 1.3 KB |
| mkuboot.sh | -rwxr-xr-x | 379 bytes |
| mkversion | -rw-r--r-- | 74 bytes |
| module-common.lds | -rw-r--r-- | 210 bytes |
| namespace.pl | -rwxr-xr-x | 13.0 KB |
| patch-kernel | -rwxr-xr-x | 9.8 KB |
| pnmtologo.c | -rw-r--r-- | 11.7 KB |
| profile2linkerlist.pl | -rw-r--r-- | 375 bytes |
| recordmcount.pl | -rwxr-xr-x | 17.0 KB |
| setlocalversion | -rwxr-xr-x | 3.6 KB |
| show_delta | -rwxr-xr-x | 3.0 KB |
| tags.sh | -rwxr-xr-x | 4.6 KB |
| unifdef.c | -rw-r--r-- | 31.6 KB |
| ver_linux | -rwxr-xr-x | 3.1 KB |
Computing file changes ...
