diff options
| author | Daniel Schaeffer <daniel@dschaeffer.localdomain> | 2008-01-30 15:42:41 -0500 |
|---|---|---|
| committer | Daniel Schaeffer <daniel@dschaeffer.localdomain> | 2008-01-30 15:42:41 -0500 |
| commit | 648b932d8cf61f38d08a84e6388036b22766c2df (patch) | |
| tree | 3c48859a194482b645b93c1bead3bcc323327fb7 /Documentation/RCU/checklist.txt | |
| parent | 2506ae0663e660d8dc7624fcdae1814c8ee3d10a (diff) | |
| parent | bbf25010f1a6b761914430f5fca081ec8c7accd1 (diff) | |
Merge branch '2.6.23' into 2.6.22.6-imx27
Conflicts:
Documentation/kernel-parameters.txt
Makefile
arch/arm/Kconfig
arch/arm/Makefile
arch/arm/mach-mx3/Kconfig
arch/arm/mach-mx3/Makefile
arch/arm/mach-mx3/mm.c
arch/arm/mach-mx3/mx31ads.c
arch/arm/mm/Kconfig
arch/arm/plat-mxc/Kconfig
arch/arm/plat-mxc/Makefile
arch/arm/plat-mxc/irq.c
block/cfq-iosched.c
drivers/ata/ahci.c
drivers/ata/libata-core.c
drivers/char/watchdog/Kconfig
drivers/firewire/fw-sbp2.c
drivers/md/dm-crypt.c
drivers/media/video/pwc/pwc-if.c
drivers/mmc/card/Kconfig
drivers/mmc/card/queue.c
drivers/mmc/core/Makefile
drivers/mmc/core/bus.c
drivers/mmc/core/core.c
drivers/mmc/core/host.c
drivers/mmc/core/mmc.c
drivers/mmc/core/sd.c
drivers/mmc/core/sd_ops.c
drivers/mmc/host/at91_mci.c
drivers/mmc/host/sdhci.c
drivers/net/bonding/bond_main.c
drivers/net/fec.c
drivers/net/forcedeth.c
drivers/net/r8169.c
drivers/net/sky2.c
drivers/rtc/Kconfig
drivers/rtc/Makefile
drivers/spi/Kconfig
drivers/spi/Makefile
drivers/usb/gadget/Makefile
drivers/usb/gadget/gadget_chips.h
drivers/usb/host/ehci.h
drivers/video/logo/logo.c
drivers/w1/slaves/Makefile
fs/9p/conv.c
fs/direct-io.c
fs/exec.c
fs/ocfs2/file.c
fs/signalfd.c
fs/sysfs/file.c
include/asm-arm/arch-mxc/dma.h
include/asm-arm/arch-mxc/entry-macro.S
include/asm-arm/arch-mxc/hardware.h
include/asm-arm/arch-mxc/io.h
include/asm-arm/arch-mxc/irqs.h
include/asm-arm/arch-mxc/memory.h
include/asm-arm/arch-mxc/mx31.h
include/asm-arm/arch-mxc/mxc.h
include/asm-arm/arch-mxc/system.h
include/asm-arm/arch-mxc/timex.h
include/asm-arm/arch-mxc/uncompress.h
include/asm-arm/arch-mxc/vmalloc.h
include/linux/fsl_devices.h
include/linux/ioprio.h
kernel/lockdep_proc.c
kernel/signal.c
mm/hugetlb.c
mm/readahead.c
net/bluetooth/rfcomm/tty.c
net/bridge/br_device.c
net/core/dev.c
net/ieee80211/softmac/ieee80211softmac_assoc.c
net/ieee80211/softmac/ieee80211softmac_wx.c
net/ipv4/netfilter/nf_conntrack_proto_icmp.c
net/ipv4/tcp_input.c
net/netfilter/nf_conntrack_proto_sctp.c
Diffstat (limited to 'Documentation/RCU/checklist.txt')
| -rw-r--r-- | Documentation/RCU/checklist.txt | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/Documentation/RCU/checklist.txt b/Documentation/RCU/checklist.txt index f4dffadbcb00..42b01bc2e1b4 100644 --- a/Documentation/RCU/checklist.txt +++ b/Documentation/RCU/checklist.txt @@ -222,7 +222,15 @@ over a rather long period of time, but improvements are always welcome! deadlock as soon as the RCU callback happens to interrupt that acquisition's critical section. -13. SRCU (srcu_read_lock(), srcu_read_unlock(), and synchronize_srcu()) +13. RCU callbacks can be and are executed in parallel. In many cases, + the callback code simply wrappers around kfree(), so that this + is not an issue (or, more accurately, to the extent that it is + an issue, the memory-allocator locking handles it). However, + if the callbacks do manipulate a shared data structure, they + must use whatever locking or other synchronization is required + to safely access and/or modify that data structure. + +14. SRCU (srcu_read_lock(), srcu_read_unlock(), and synchronize_srcu()) may only be invoked from process context. Unlike other forms of RCU, it -is- permissible to block in an SRCU read-side critical section (demarked by srcu_read_lock() and srcu_read_unlock()), |