diff options
Diffstat (limited to 'kernels')
10 files changed, 686 insertions, 218 deletions
diff --git a/kernels/linux-libre-rt/PKGBUILD b/kernels/linux-libre-rt/PKGBUILD index 1f6b300ab..1e0b6dd5c 100644 --- a/kernels/linux-libre-rt/PKGBUILD +++ b/kernels/linux-libre-rt/PKGBUILD @@ -9,12 +9,12 @@ pkgbase=linux-libre-rt # Build stock -LIBRE-RT kernel #pkgbase=linux-libre-custom # Build kernel with a different name _basekernel=3.12 -_releasever=6 -_rtpatchver=rt9 +_releasever=8 +_rtpatchver=rt11 _pkgver=${_basekernel}.${_releasever} pkgver=${_basekernel}.${_releasever}_${_rtpatchver} -pkgrel=2 -_lxopkgver=${_basekernel}.6 # nearly always the same as pkgver +pkgrel=1 +_lxopkgver=${_basekernel}.8 # nearly always the same as pkgver arch=('i686' 'x86_64' 'mips64el') url="http://linux-libre.fsfla.org/" license=('GPL2') @@ -32,21 +32,31 @@ source=("http://linux-libre.fsfla.org/pub/linux-libre/releases/${_basekernel}-gn 'boot-logo.patch' 'change-default-console-loglevel.patch' 'criu-no-expert.patch' - 'timers-do-not-raise-softirq-unconditionally.patch' + 'sunrpc-create-a-new-dummy-pipe-for-gssd-to-hold-open.patch' + 'sunrpc-replace-gssd_running-with-more-reliable-check.patch' + 'nfs-check-gssd-running-before-krb5i-auth.patch' + 'rpc_pipe-remove-the-clntXX-dir-if-creating-the-pipe-fails.patch' + 'sunrpc-add-an-info-file-for-the-dummy-gssd-pipe.patch' + 'rpc_pipe-fix-cleanup-of-dummy-gssd-directory-when-notification-fails.patch' "http://www.linux-libre.fsfla.org/pub/linux-libre/lemote/gnewsense/pool/debuginfo/linux-patches-${_lxopkgver}-gnu_0loongsonlibre_mipsel.tar.bz2") md5sums=('254f59707b6676b59ce5ca5c3c698319' - '4b18ce60daff87504e6740670edf6b50' - 'b6b66c250459a63664e23235153f587c' - '1f8c7bda0a089cfc717535c404342be1' - '0c3c36bfbdffff9262cb3aedff8f65be' + '392f920129940c4f83c7d204468213f3' + '4fcc03762fbc78465951b57ccd0b5a9b' + 'e40789b1e59136235827a3b3bf40c121' + 'bf542c4038d3e7d0da4c92bac0466198' '82496e68851d1960543a07ba51cdb44a' '2967cecc3af9f954ccc822fd63dca6ff' '8267264d9a8966e57fdacd1fa1fc65c4' '44260d2cb1a8b51c119d2ce1f83e457a' '98beb36f9b8cf16e58de2483ea9985e3' 'd50c1ac47394e9aec637002ef3392bd1' - 'a091e206b3cadcd9bcd807f3a0c98922' - '71bbddd5f9799aa045660d92baa05845') + 'd4a75f77e6bd5d700dcd534cd5f0dfce' + 'dc86fdc37615c97f03c1e0c31b7b833a' + '88eef9d3b5012ef7e82af1af8cc4e517' + 'cec0bb8981936eab2943b2009b7a6fff' + '88d9cddf9e0050a76ec4674f264fb2a1' + 'cb9016630212ef07b168892fbcfd4e5d' + '0569e96c071703cc244f1ea7ee87d40a') if [ "$CARCH" != "mips64el" ]; then # don't use the Loongson-specific patches on non-mips64el arches. unset source[${#source[@]}-1] @@ -66,15 +76,15 @@ prepare() { # add realtime patch patch -p1 -i "${srcdir}/patch-${_pkgver}-${_rtpatchver}.patch" - # revert patch, causing the kernel to hang on very early in the boot process - patch -p1 -R -i "${srcdir}/timers-do-not-raise-softirq-unconditionally.patch" - # add freedo as boot logo patch -Np1 -i "${srcdir}/boot-logo.patch" # fix issue on Hal8188EFWImg_CE.c deblobbed file sed -i "\|DEBLOBBED| s|,||" drivers/staging/rtl8188eu/hal/Hal8188EFWImg_CE.c + # add latest fixes from stable queue, if needed + # http://git.kernel.org/?p=linux/kernel/git/stable/stable-queue.git + # set DEFAULT_CONSOLE_LOGLEVEL to 4 (same value as the 'quiet' kernel param) # remove this when a Kconfig knob is made available by upstream # (relevant patch sent upstream: https://lkml.org/lkml/2011/7/26/227) @@ -84,6 +94,17 @@ prepare() { # patch from fedora patch -Np1 -i "${srcdir}/criu-no-expert.patch" + # fix 15 seconds nfs delay + patch -Np1 -i "${srcdir}/sunrpc-create-a-new-dummy-pipe-for-gssd-to-hold-open.patch" + patch -Np1 -i "${srcdir}/sunrpc-replace-gssd_running-with-more-reliable-check.patch" + patch -Np1 -i "${srcdir}/nfs-check-gssd-running-before-krb5i-auth.patch" + # fix nfs kernel oops + # #37866 + patch -Np1 -i "${srcdir}/rpc_pipe-remove-the-clntXX-dir-if-creating-the-pipe-fails.patch" + patch -Np1 -i "${srcdir}/sunrpc-add-an-info-file-for-the-dummy-gssd-pipe.patch" + + patch -Np1 -i "${srcdir}/rpc_pipe-fix-cleanup-of-dummy-gssd-directory-when-notification-fails.patch" + if [ "$CARCH" == "mips64el" ]; then sed -i "s|^EXTRAVERSION.*|EXTRAVERSION =-libre-rt|" Makefile sed -r "s|^( SUBLEVEL = ).*|\1$_sublevel|" \ diff --git a/kernels/linux-libre-rt/config.i686 b/kernels/linux-libre-rt/config.i686 index 82b46d523..ee41c3682 100644 --- a/kernels/linux-libre-rt/config.i686 +++ b/kernels/linux-libre-rt/config.i686 @@ -1,6 +1,6 @@ # # Automatically generated file; DO NOT EDIT. -# Linux/x86 3.12.1 Kernel Configuration +# Linux/x86 3.12.8 Kernel Configuration # # CONFIG_64BIT is not set CONFIG_X86_32=y @@ -460,7 +460,7 @@ CONFIG_KSM=y CONFIG_DEFAULT_MMAP_MIN_ADDR=4096 CONFIG_ARCH_SUPPORTS_MEMORY_FAILURE=y CONFIG_MEMORY_FAILURE=y -# CONFIG_HWPOISON_INJECT is not set +CONFIG_HWPOISON_INJECT=m CONFIG_CROSS_MEMORY_ATTACH=y CONFIG_CLEANCACHE=y CONFIG_FRONTSWAP=y @@ -1114,7 +1114,7 @@ CONFIG_IP_DCCP_TFRC_LIB=y # DCCP Kernel Hacking # # CONFIG_IP_DCCP_DEBUG is not set -# CONFIG_NET_DCCPPROBE is not set +CONFIG_NET_DCCPPROBE=m CONFIG_IP_SCTP=m CONFIG_NET_SCTPPROBE=m # CONFIG_SCTP_DBG_OBJCNT is not set @@ -3149,7 +3149,15 @@ CONFIG_I2C=m CONFIG_I2C_BOARDINFO=y CONFIG_I2C_COMPAT=y CONFIG_I2C_CHARDEV=m -# CONFIG_I2C_MUX is not set +CONFIG_I2C_MUX=m + +# +# Multiplexer I2C Chip support +# +# CONFIG_I2C_ARB_GPIO_CHALLENGE is not set +# CONFIG_I2C_MUX_GPIO is not set +CONFIG_I2C_MUX_PCA9541=m +CONFIG_I2C_MUX_PCA954x=m CONFIG_I2C_HELPER_AUTO=y CONFIG_I2C_SMBUS=m CONFIG_I2C_ALGOBIT=m @@ -4875,18 +4883,6 @@ CONFIG_USB_SERIAL_IPW=m CONFIG_USB_SERIAL_IUU=m CONFIG_USB_SERIAL_KEYSPAN_PDA=m CONFIG_USB_SERIAL_KEYSPAN=m -CONFIG_USB_SERIAL_KEYSPAN_MPR=y -CONFIG_USB_SERIAL_KEYSPAN_USA28=y -CONFIG_USB_SERIAL_KEYSPAN_USA28X=y -CONFIG_USB_SERIAL_KEYSPAN_USA28XA=y -CONFIG_USB_SERIAL_KEYSPAN_USA28XB=y -CONFIG_USB_SERIAL_KEYSPAN_USA19=y -CONFIG_USB_SERIAL_KEYSPAN_USA18X=y -CONFIG_USB_SERIAL_KEYSPAN_USA19W=y -CONFIG_USB_SERIAL_KEYSPAN_USA19QW=y -CONFIG_USB_SERIAL_KEYSPAN_USA19QI=y -CONFIG_USB_SERIAL_KEYSPAN_USA49W=y -CONFIG_USB_SERIAL_KEYSPAN_USA49WLC=y CONFIG_USB_SERIAL_KLSI=m CONFIG_USB_SERIAL_KOBIL_SCT=m CONFIG_USB_SERIAL_MCT_U232=m @@ -5257,7 +5253,6 @@ CONFIG_DMA_OF=y # # DMA Clients # -CONFIG_NET_DMA=y CONFIG_ASYNC_TX_DMA=y # CONFIG_DMATEST is not set CONFIG_DCA=m @@ -6028,14 +6023,22 @@ CONFIG_HAVE_ARCH_KMEMCHECK=y # # Debug Lockups and Hangs # -# CONFIG_LOCKUP_DETECTOR is not set -# CONFIG_DETECT_HUNG_TASK is not set +CONFIG_LOCKUP_DETECTOR=y +CONFIG_HARDLOCKUP_DETECTOR=y +# CONFIG_BOOTPARAM_HARDLOCKUP_PANIC is not set +CONFIG_BOOTPARAM_HARDLOCKUP_PANIC_VALUE=0 +# CONFIG_BOOTPARAM_SOFTLOCKUP_PANIC is not set +CONFIG_BOOTPARAM_SOFTLOCKUP_PANIC_VALUE=0 +CONFIG_DETECT_HUNG_TASK=y +CONFIG_DEFAULT_HUNG_TASK_TIMEOUT=120 +# CONFIG_BOOTPARAM_HUNG_TASK_PANIC is not set +CONFIG_BOOTPARAM_HUNG_TASK_PANIC_VALUE=0 # CONFIG_PANIC_ON_OOPS is not set CONFIG_PANIC_ON_OOPS_VALUE=0 CONFIG_SCHED_DEBUG=y CONFIG_SCHEDSTATS=y -# CONFIG_TIMER_STATS is not set -CONFIG_DEBUG_PREEMPT=y +CONFIG_TIMER_STATS=y +# CONFIG_DEBUG_PREEMPT is not set # # Lock Debugging (spinlocks, mutexes, etc...) @@ -6043,7 +6046,7 @@ CONFIG_DEBUG_PREEMPT=y # CONFIG_DEBUG_RT_MUTEXES is not set # CONFIG_RT_MUTEX_TESTER is not set # CONFIG_DEBUG_SPINLOCK is not set -# CONFIG_DEBUG_MUTEXES is not set +CONFIG_DEBUG_MUTEXES=y # CONFIG_DEBUG_WW_MUTEX_SLOWPATH is not set # CONFIG_DEBUG_LOCK_ALLOC is not set # CONFIG_PROVE_LOCKING is not set @@ -6100,8 +6103,8 @@ CONFIG_FUNCTION_GRAPH_TRACER=y # CONFIG_IRQSOFF_TRACER is not set # CONFIG_PREEMPT_TRACER is not set CONFIG_SCHED_TRACER=y -# CONFIG_WAKEUP_LATENCY_HIST is not set -# CONFIG_MISSED_TIMER_OFFSETS_HIST is not set +CONFIG_WAKEUP_LATENCY_HIST=y +CONFIG_MISSED_TIMER_OFFSETS_HIST=y CONFIG_FTRACE_SYSCALLS=y CONFIG_TRACER_SNAPSHOT=y # CONFIG_TRACER_SNAPSHOT_PER_CPU_SWAP is not set @@ -6148,7 +6151,7 @@ CONFIG_EARLY_PRINTK=y # CONFIG_EARLY_PRINTK_DBGP is not set # CONFIG_X86_PTDUMP is not set CONFIG_DEBUG_RODATA=y -CONFIG_DEBUG_RODATA_TEST=y +# CONFIG_DEBUG_RODATA_TEST is not set # CONFIG_DEBUG_SET_MODULE_RONX is not set # CONFIG_DEBUG_NX_TEST is not set CONFIG_DOUBLEFAULT=y diff --git a/kernels/linux-libre-rt/config.x86_64 b/kernels/linux-libre-rt/config.x86_64 index 9f641e359..16c173cd0 100644 --- a/kernels/linux-libre-rt/config.x86_64 +++ b/kernels/linux-libre-rt/config.x86_64 @@ -1,6 +1,6 @@ # # Automatically generated file; DO NOT EDIT. -# Linux/x86 3.12.1 Kernel Configuration +# Linux/x86 3.12.8 Kernel Configuration # CONFIG_64BIT=y CONFIG_X86_64=y @@ -464,7 +464,7 @@ CONFIG_KSM=y CONFIG_DEFAULT_MMAP_MIN_ADDR=4096 CONFIG_ARCH_SUPPORTS_MEMORY_FAILURE=y CONFIG_MEMORY_FAILURE=y -# CONFIG_HWPOISON_INJECT is not set +CONFIG_HWPOISON_INJECT=m CONFIG_CROSS_MEMORY_ATTACH=y CONFIG_CLEANCACHE=y CONFIG_FRONTSWAP=y @@ -1095,7 +1095,7 @@ CONFIG_IP_DCCP_TFRC_LIB=y # DCCP Kernel Hacking # # CONFIG_IP_DCCP_DEBUG is not set -# CONFIG_NET_DCCPPROBE is not set +CONFIG_NET_DCCPPROBE=m CONFIG_IP_SCTP=m CONFIG_NET_SCTPPROBE=m # CONFIG_SCTP_DBG_OBJCNT is not set @@ -3041,7 +3041,14 @@ CONFIG_I2C=m CONFIG_I2C_BOARDINFO=y CONFIG_I2C_COMPAT=y CONFIG_I2C_CHARDEV=m -# CONFIG_I2C_MUX is not set +CONFIG_I2C_MUX=m + +# +# Multiplexer I2C Chip support +# +# CONFIG_I2C_MUX_GPIO is not set +CONFIG_I2C_MUX_PCA9541=m +CONFIG_I2C_MUX_PCA954x=m CONFIG_I2C_HELPER_AUTO=y CONFIG_I2C_SMBUS=m CONFIG_I2C_ALGOBIT=m @@ -4698,18 +4705,6 @@ CONFIG_USB_SERIAL_IPW=m CONFIG_USB_SERIAL_IUU=m CONFIG_USB_SERIAL_KEYSPAN_PDA=m CONFIG_USB_SERIAL_KEYSPAN=m -CONFIG_USB_SERIAL_KEYSPAN_MPR=y -CONFIG_USB_SERIAL_KEYSPAN_USA28=y -CONFIG_USB_SERIAL_KEYSPAN_USA28X=y -CONFIG_USB_SERIAL_KEYSPAN_USA28XA=y -CONFIG_USB_SERIAL_KEYSPAN_USA28XB=y -CONFIG_USB_SERIAL_KEYSPAN_USA19=y -CONFIG_USB_SERIAL_KEYSPAN_USA18X=y -CONFIG_USB_SERIAL_KEYSPAN_USA19W=y -CONFIG_USB_SERIAL_KEYSPAN_USA19QW=y -CONFIG_USB_SERIAL_KEYSPAN_USA19QI=y -CONFIG_USB_SERIAL_KEYSPAN_USA49W=y -CONFIG_USB_SERIAL_KEYSPAN_USA49WLC=y CONFIG_USB_SERIAL_KLSI=m CONFIG_USB_SERIAL_KOBIL_SCT=m CONFIG_USB_SERIAL_MCT_U232=m @@ -5075,7 +5070,6 @@ CONFIG_DMA_ACPI=y # # DMA Clients # -CONFIG_NET_DMA=y CONFIG_ASYNC_TX_DMA=y # CONFIG_DMATEST is not set CONFIG_DCA=m @@ -5816,14 +5810,22 @@ CONFIG_HAVE_ARCH_KMEMCHECK=y # # Debug Lockups and Hangs # -# CONFIG_LOCKUP_DETECTOR is not set -# CONFIG_DETECT_HUNG_TASK is not set +CONFIG_LOCKUP_DETECTOR=y +CONFIG_HARDLOCKUP_DETECTOR=y +# CONFIG_BOOTPARAM_HARDLOCKUP_PANIC is not set +CONFIG_BOOTPARAM_HARDLOCKUP_PANIC_VALUE=0 +# CONFIG_BOOTPARAM_SOFTLOCKUP_PANIC is not set +CONFIG_BOOTPARAM_SOFTLOCKUP_PANIC_VALUE=0 +CONFIG_DETECT_HUNG_TASK=y +CONFIG_DEFAULT_HUNG_TASK_TIMEOUT=120 +# CONFIG_BOOTPARAM_HUNG_TASK_PANIC is not set +CONFIG_BOOTPARAM_HUNG_TASK_PANIC_VALUE=0 # CONFIG_PANIC_ON_OOPS is not set CONFIG_PANIC_ON_OOPS_VALUE=0 CONFIG_SCHED_DEBUG=y CONFIG_SCHEDSTATS=y -# CONFIG_TIMER_STATS is not set -CONFIG_DEBUG_PREEMPT=y +CONFIG_TIMER_STATS=y +# CONFIG_DEBUG_PREEMPT is not set # # Lock Debugging (spinlocks, mutexes, etc...) @@ -5831,7 +5833,7 @@ CONFIG_DEBUG_PREEMPT=y # CONFIG_DEBUG_RT_MUTEXES is not set # CONFIG_RT_MUTEX_TESTER is not set # CONFIG_DEBUG_SPINLOCK is not set -# CONFIG_DEBUG_MUTEXES is not set +CONFIG_DEBUG_MUTEXES=y # CONFIG_DEBUG_WW_MUTEX_SLOWPATH is not set # CONFIG_DEBUG_LOCK_ALLOC is not set # CONFIG_PROVE_LOCKING is not set @@ -5937,7 +5939,7 @@ CONFIG_EARLY_PRINTK=y # CONFIG_EARLY_PRINTK_DBGP is not set # CONFIG_X86_PTDUMP is not set CONFIG_DEBUG_RODATA=y -CONFIG_DEBUG_RODATA_TEST=y +# CONFIG_DEBUG_RODATA_TEST is not set # CONFIG_DEBUG_SET_MODULE_RONX is not set # CONFIG_DEBUG_NX_TEST is not set CONFIG_DOUBLEFAULT=y diff --git a/kernels/linux-libre-rt/nfs-check-gssd-running-before-krb5i-auth.patch b/kernels/linux-libre-rt/nfs-check-gssd-running-before-krb5i-auth.patch new file mode 100644 index 000000000..be81fec76 --- /dev/null +++ b/kernels/linux-libre-rt/nfs-check-gssd-running-before-krb5i-auth.patch @@ -0,0 +1,48 @@ +Bugzilla: N/A +Upstream-status: queued in NFS git tree (for 3.13/3.14?) + +Currently, the client will attempt to use krb5i in the SETCLIENTID call +even if rpc.gssd isn't running. When that fails, it'll then fall back to +RPC_AUTH_UNIX. This introduced a delay when mounting if rpc.gssd isn't +running, and causes warning messages to pop up in the ring buffer. + +Check to see if rpc.gssd is running before even attempting to use krb5i +auth, and just silently skip trying to do so if it isn't. In the event +that the admin is actually trying to mount with krb5*, it will still +fail at a later stage of the mount attempt. + +Signed-off-by: Jeff Layton <jlayton@redhat.com> +Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> +--- + fs/nfs/nfs4client.c | 7 ++++++- + 1 files changed, 6 insertions(+), 1 deletions(-) + +diff -up linux-3.11.9-200.fc19.x86_64/fs/nfs/nfs4client.c.orig linux-3.11.9-200.fc19.x86_64/fs/nfs/nfs4client.c +--- linux-3.11.9-200.fc19.x86_64/fs/nfs/nfs4client.c.orig 2013-09-02 16:46:10.000000000 -0400 ++++ linux-3.11.9-200.fc19.x86_64/fs/nfs/nfs4client.c 2013-11-21 10:20:27.288286000 -0500 +@@ -10,6 +10,7 @@ + #include <linux/sunrpc/auth.h> + #include <linux/sunrpc/xprt.h> + #include <linux/sunrpc/bc_xprt.h> ++#include <linux/sunrpc/rpc_pipe_fs.h> + #include "internal.h" + #include "callback.h" + #include "delegation.h" +@@ -206,7 +207,11 @@ struct nfs_client *nfs4_init_client(stru + if (clp->cl_minorversion != 0) + __set_bit(NFS_CS_INFINITE_SLOTS, &clp->cl_flags); + __set_bit(NFS_CS_DISCRTRY, &clp->cl_flags); +- error = nfs_create_rpc_client(clp, timeparms, RPC_AUTH_GSS_KRB5I); ++ ++ error = -EINVAL; ++ if (gssd_running(clp->cl_net)) ++ error = nfs_create_rpc_client(clp, timeparms, ++ RPC_AUTH_GSS_KRB5I); + if (error == -EINVAL) + error = nfs_create_rpc_client(clp, timeparms, RPC_AUTH_UNIX); + if (error < 0) + +_______________________________________________ +kernel mailing list +kernel@lists.fedoraproject.org +https://admin.fedoraproject.org/mailman/listinfo/kernel diff --git a/kernels/linux-libre-rt/rpc_pipe-fix-cleanup-of-dummy-gssd-directory-when-notification-fails.patch b/kernels/linux-libre-rt/rpc_pipe-fix-cleanup-of-dummy-gssd-directory-when-notification-fails.patch new file mode 100644 index 000000000..ed03f34dd --- /dev/null +++ b/kernels/linux-libre-rt/rpc_pipe-fix-cleanup-of-dummy-gssd-directory-when-notification-fails.patch @@ -0,0 +1,50 @@ +Bugzilla: 1037793 +Upstream-status: submitted for 3.14 + +Currently, it could leak dentry references in some cases. Make sure +we clean up properly. + +Signed-off-by: Jeff Layton <jlayton@redhat.com> +--- + net/sunrpc/rpc_pipe.c | 14 +++++++++++++- + 1 file changed, 13 insertions(+), 1 deletion(-) + +diff --git a/net/sunrpc/rpc_pipe.c b/net/sunrpc/rpc_pipe.c +index 5d973b2..b185548 100644 +--- a/net/sunrpc/rpc_pipe.c ++++ b/net/sunrpc/rpc_pipe.c +@@ -1369,6 +1369,18 @@ out: + return pipe_dentry; + } + ++static void ++rpc_gssd_dummy_depopulate(struct dentry *pipe_dentry) ++{ ++ struct dentry *clnt_dir = pipe_dentry->d_parent; ++ struct dentry *gssd_dir = clnt_dir->d_parent; ++ ++ __rpc_rmpipe(clnt_dir->d_inode, pipe_dentry); ++ __rpc_depopulate(clnt_dir, gssd_dummy_info_file, 0, 1); ++ __rpc_depopulate(gssd_dir, gssd_dummy_clnt_dir, 0, 1); ++ dput(pipe_dentry); ++} ++ + static int + rpc_fill_super(struct super_block *sb, void *data, int silent) + { +@@ -1412,7 +1424,7 @@ rpc_fill_super(struct super_block *sb, void *data, int silent) + return 0; + + err_depopulate: +- dput(gssd_dentry); ++ rpc_gssd_dummy_depopulate(gssd_dentry); + blocking_notifier_call_chain(&rpc_pipefs_notifier_list, + RPC_PIPEFS_UMOUNT, + sb); +-- +1.8.4.2 + +-- +To unsubscribe from this list: send the line "unsubscribe linux-nfs" in +the body of a message to majordomo@vger.kernel.org +More majordomo info at http://vger.kernel.org/majordomo-info.html diff --git a/kernels/linux-libre-rt/rpc_pipe-remove-the-clntXX-dir-if-creating-the-pipe-fails.patch b/kernels/linux-libre-rt/rpc_pipe-remove-the-clntXX-dir-if-creating-the-pipe-fails.patch new file mode 100644 index 000000000..e4b1a255f --- /dev/null +++ b/kernels/linux-libre-rt/rpc_pipe-remove-the-clntXX-dir-if-creating-the-pipe-fails.patch @@ -0,0 +1,32 @@ +Bugzilla: 1037793 +Upstream-status: submitted for 3.14 + +In the event that we create the gssd/clntXX dir, but the pipe creation +subsequently fails, then we should remove the clntXX dir before +returning. + +Signed-off-by: Jeff Layton <jlayton@redhat.com> +--- + net/sunrpc/rpc_pipe.c | 2 ++ + 1 file changed, 2 insertions(+) + +diff --git a/net/sunrpc/rpc_pipe.c b/net/sunrpc/rpc_pipe.c +index 5cd7ad1..0b74c61 100644 +--- a/net/sunrpc/rpc_pipe.c ++++ b/net/sunrpc/rpc_pipe.c +@@ -1313,6 +1313,8 @@ rpc_gssd_dummy_populate(struct dentry *root, struct rpc_pipe *pipe_data) + } + + pipe_dentry = rpc_mkpipe_dentry(clnt_dentry, "gssd", NULL, pipe_data); ++ if (IS_ERR(pipe_dentry)) ++ __rpc_depopulate(gssd_dentry, gssd_dummy_clnt_dir, 0, 1); + out: + dput(clnt_dentry); + dput(gssd_dentry); +-- +1.8.4.2 + +-- +To unsubscribe from this list: send the line "unsubscribe linux-nfs" in +the body of a message to majordomo@vger.kernel.org +More majordomo info at http://vger.kernel.org/majordomo-info.html diff --git a/kernels/linux-libre-rt/sunrpc-add-an-info-file-for-the-dummy-gssd-pipe.patch b/kernels/linux-libre-rt/sunrpc-add-an-info-file-for-the-dummy-gssd-pipe.patch new file mode 100644 index 000000000..dd3b5ba2f --- /dev/null +++ b/kernels/linux-libre-rt/sunrpc-add-an-info-file-for-the-dummy-gssd-pipe.patch @@ -0,0 +1,96 @@ +Bugzilla: 1037793 +Upstream-status: submitted for 3.14 + +rpc.gssd expects to see an "info" file in each clntXX dir. Since adding +the dummy gssd pipe, users that run rpc.gssd see a lot of these messages +spamming the logs: + + rpc.gssd[508]: ERROR: can't open /var/lib/nfs/rpc_pipefs/gssd/clntXX/info: No such file or directory + rpc.gssd[508]: ERROR: failed to read service info + +Add a dummy gssd/clntXX/info file to help silence these messages. + +Signed-off-by: Jeff Layton <jlayton@redhat.com> +--- + net/sunrpc/rpc_pipe.c | 50 +++++++++++++++++++++++++++++++++++++++++++++++++- + 1 file changed, 49 insertions(+), 1 deletion(-) + +diff --git a/net/sunrpc/rpc_pipe.c b/net/sunrpc/rpc_pipe.c +index 0b74c61..5d973b2 100644 +--- a/net/sunrpc/rpc_pipe.c ++++ b/net/sunrpc/rpc_pipe.c +@@ -17,6 +17,7 @@ + #include <linux/fsnotify.h> + #include <linux/kernel.h> + #include <linux/rcupdate.h> ++#include <linux/utsname.h> + + #include <asm/ioctls.h> + #include <linux/poll.h> +@@ -1275,6 +1276,44 @@ static const struct rpc_pipe_ops gssd_dummy_pipe_ops = { + .downcall = dummy_downcall, + }; + ++/* ++ * Here we present a bogus "info" file to keep rpc.gssd happy. We don't expect ++ * that it will ever use this info to handle an upcall, but rpc.gssd expects ++ * that this file will be there and have a certain format. ++ */ ++static int ++rpc_show_dummy_info(struct seq_file *m, void *v) ++{ ++ seq_printf(m, "RPC server: %s\n", utsname()->nodename); ++ seq_printf(m, "service: foo (1) version 0\n"); ++ seq_printf(m, "address: 127.0.0.1\n"); ++ seq_printf(m, "protocol: tcp\n"); ++ seq_printf(m, "port: 0\n"); ++ return 0; ++} ++ ++static int ++rpc_dummy_info_open(struct inode *inode, struct file *file) ++{ ++ return single_open(file, rpc_show_dummy_info, NULL); ++} ++ ++static const struct file_operations rpc_dummy_info_operations = { ++ .owner = THIS_MODULE, ++ .open = rpc_dummy_info_open, ++ .read = seq_read, ++ .llseek = seq_lseek, ++ .release = single_release, ++}; ++ ++static const struct rpc_filelist gssd_dummy_info_file[] = { ++ [0] = { ++ .name = "info", ++ .i_fop = &rpc_dummy_info_operations, ++ .mode = S_IFREG | S_IRUSR, ++ }, ++}; ++ + /** + * rpc_gssd_dummy_populate - create a dummy gssd pipe + * @root: root of the rpc_pipefs filesystem +@@ -1312,9 +1351,18 @@ rpc_gssd_dummy_populate(struct dentry *root, struct rpc_pipe *pipe_data) + goto out; + } + ++ ret = rpc_populate(clnt_dentry, gssd_dummy_info_file, 0, 1, NULL); ++ if (ret) { ++ __rpc_depopulate(gssd_dentry, gssd_dummy_clnt_dir, 0, 1); ++ pipe_dentry = ERR_PTR(ret); ++ goto out; ++ } ++ + pipe_dentry = rpc_mkpipe_dentry(clnt_dentry, "gssd", NULL, pipe_data); +- if (IS_ERR(pipe_dentry)) ++ if (IS_ERR(pipe_dentry)) { ++ __rpc_depopulate(clnt_dentry, gssd_dummy_info_file, 0, 1); + __rpc_depopulate(gssd_dentry, gssd_dummy_clnt_dir, 0, 1); ++ } + out: + dput(clnt_dentry); + dput(gssd_dentry); +-- +1.8.4.2 diff --git a/kernels/linux-libre-rt/sunrpc-create-a-new-dummy-pipe-for-gssd-to-hold-open.patch b/kernels/linux-libre-rt/sunrpc-create-a-new-dummy-pipe-for-gssd-to-hold-open.patch new file mode 100644 index 000000000..805498a70 --- /dev/null +++ b/kernels/linux-libre-rt/sunrpc-create-a-new-dummy-pipe-for-gssd-to-hold-open.patch @@ -0,0 +1,233 @@ +Bugzilla: N/A +Upstream-status: queued in NFS git tree (for 3.13/3.14?) + +rpc.gssd will naturally hold open any pipe named */clnt*/gssd that shows +up under rpc_pipefs. That behavior gives us a reliable mechanism to tell +whether it's actually running or not. + +Create a new toplevel "gssd" directory in rpc_pipefs when it's mounted. +Under that directory create another directory called "clntXX", and then +within that a pipe called "gssd". + +We'll never send an upcall along that pipe, and any downcall written to +it will just return -EINVAL. + +Signed-off-by: Jeff Layton <jlayton@redhat.com> +Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> +--- + include/linux/sunrpc/rpc_pipe_fs.h | 3 +- + net/sunrpc/netns.h | 1 + + net/sunrpc/rpc_pipe.c | 93 ++++++++++++++++++++++++++++++++++- + net/sunrpc/sunrpc_syms.c | 8 +++- + 4 files changed, 100 insertions(+), 5 deletions(-) + +diff -up linux-3.11.9-200.fc19.x86_64/include/linux/sunrpc/rpc_pipe_fs.h.orig linux-3.11.9-200.fc19.x86_64/include/linux/sunrpc/rpc_pipe_fs.h +--- linux-3.11.9-200.fc19.x86_64/include/linux/sunrpc/rpc_pipe_fs.h.orig 2013-09-02 16:46:10.000000000 -0400 ++++ linux-3.11.9-200.fc19.x86_64/include/linux/sunrpc/rpc_pipe_fs.h 2013-11-21 10:11:17.893026000 -0500 +@@ -64,7 +64,8 @@ enum { + + extern struct dentry *rpc_d_lookup_sb(const struct super_block *sb, + const unsigned char *dir_name); +-extern void rpc_pipefs_init_net(struct net *net); ++extern int rpc_pipefs_init_net(struct net *net); ++extern void rpc_pipefs_exit_net(struct net *net); + extern struct super_block *rpc_get_sb_net(const struct net *net); + extern void rpc_put_sb_net(const struct net *net); + +diff -up linux-3.11.9-200.fc19.x86_64/net/sunrpc/netns.h.orig linux-3.11.9-200.fc19.x86_64/net/sunrpc/netns.h +--- linux-3.11.9-200.fc19.x86_64/net/sunrpc/netns.h.orig 2013-09-02 16:46:10.000000000 -0400 ++++ linux-3.11.9-200.fc19.x86_64/net/sunrpc/netns.h 2013-11-21 10:11:17.897029000 -0500 +@@ -14,6 +14,7 @@ struct sunrpc_net { + struct cache_detail *rsi_cache; + + struct super_block *pipefs_sb; ++ struct rpc_pipe *gssd_dummy; + struct mutex pipefs_sb_lock; + + struct list_head all_clients; +diff -up linux-3.11.9-200.fc19.x86_64/net/sunrpc/rpc_pipe.c.orig linux-3.11.9-200.fc19.x86_64/net/sunrpc/rpc_pipe.c +--- linux-3.11.9-200.fc19.x86_64/net/sunrpc/rpc_pipe.c.orig 2013-09-02 16:46:10.000000000 -0400 ++++ linux-3.11.9-200.fc19.x86_64/net/sunrpc/rpc_pipe.c 2013-11-21 10:11:17.903026000 -0500 +@@ -38,7 +38,7 @@ + #define NET_NAME(net) ((net == &init_net) ? " (init_net)" : "") + + static struct file_system_type rpc_pipe_fs_type; +- ++static const struct rpc_pipe_ops gssd_dummy_pipe_ops; + + static struct kmem_cache *rpc_inode_cachep __read_mostly; + +@@ -1019,6 +1019,7 @@ enum { + RPCAUTH_nfsd4_cb, + RPCAUTH_cache, + RPCAUTH_nfsd, ++ RPCAUTH_gssd, + RPCAUTH_RootEOF + }; + +@@ -1055,6 +1056,10 @@ static const struct rpc_filelist files[] + .name = "nfsd", + .mode = S_IFDIR | S_IRUGO | S_IXUGO, + }, ++ [RPCAUTH_gssd] = { ++ .name = "gssd", ++ .mode = S_IFDIR | S_IRUGO | S_IXUGO, ++ }, + }; + + /* +@@ -1068,13 +1073,25 @@ struct dentry *rpc_d_lookup_sb(const str + } + EXPORT_SYMBOL_GPL(rpc_d_lookup_sb); + +-void rpc_pipefs_init_net(struct net *net) ++int rpc_pipefs_init_net(struct net *net) + { + struct sunrpc_net *sn = net_generic(net, sunrpc_net_id); + ++ sn->gssd_dummy = rpc_mkpipe_data(&gssd_dummy_pipe_ops, 0); ++ if (IS_ERR(sn->gssd_dummy)) ++ return PTR_ERR(sn->gssd_dummy); ++ + mutex_init(&sn->pipefs_sb_lock); + sn->gssd_running = 1; + sn->pipe_version = -1; ++ return 0; ++} ++ ++void rpc_pipefs_exit_net(struct net *net) ++{ ++ struct sunrpc_net *sn = net_generic(net, sunrpc_net_id); ++ ++ rpc_destroy_pipe_data(sn->gssd_dummy); + } + + /* +@@ -1104,11 +1121,73 @@ void rpc_put_sb_net(const struct net *ne + } + EXPORT_SYMBOL_GPL(rpc_put_sb_net); + ++static const struct rpc_filelist gssd_dummy_clnt_dir[] = { ++ [0] = { ++ .name = "clntXX", ++ .mode = S_IFDIR | S_IRUGO | S_IXUGO, ++ }, ++}; ++ ++static ssize_t ++dummy_downcall(struct file *filp, const char __user *src, size_t len) ++{ ++ return -EINVAL; ++} ++ ++static const struct rpc_pipe_ops gssd_dummy_pipe_ops = { ++ .upcall = rpc_pipe_generic_upcall, ++ .downcall = dummy_downcall, ++}; ++ ++/** ++ * rpc_gssd_dummy_populate - create a dummy gssd pipe ++ * @root: root of the rpc_pipefs filesystem ++ * @pipe_data: pipe data created when netns is initialized ++ * ++ * Create a dummy set of directories and a pipe that gssd can hold open to ++ * indicate that it is up and running. ++ */ ++static struct dentry * ++rpc_gssd_dummy_populate(struct dentry *root, struct rpc_pipe *pipe_data) ++{ ++ int ret = 0; ++ struct dentry *gssd_dentry; ++ struct dentry *clnt_dentry = NULL; ++ struct dentry *pipe_dentry = NULL; ++ struct qstr q = QSTR_INIT(files[RPCAUTH_gssd].name, ++ strlen(files[RPCAUTH_gssd].name)); ++ ++ /* We should never get this far if "gssd" doesn't exist */ ++ gssd_dentry = d_hash_and_lookup(root, &q); ++ if (!gssd_dentry) ++ return ERR_PTR(-ENOENT); ++ ++ ret = rpc_populate(gssd_dentry, gssd_dummy_clnt_dir, 0, 1, NULL); ++ if (ret) { ++ pipe_dentry = ERR_PTR(ret); ++ goto out; ++ } ++ ++ q.name = gssd_dummy_clnt_dir[0].name; ++ q.len = strlen(gssd_dummy_clnt_dir[0].name); ++ clnt_dentry = d_hash_and_lookup(gssd_dentry, &q); ++ if (!clnt_dentry) { ++ pipe_dentry = ERR_PTR(-ENOENT); ++ goto out; ++ } ++ ++ pipe_dentry = rpc_mkpipe_dentry(clnt_dentry, "gssd", NULL, pipe_data); ++out: ++ dput(clnt_dentry); ++ dput(gssd_dentry); ++ return pipe_dentry; ++} ++ + static int + rpc_fill_super(struct super_block *sb, void *data, int silent) + { + struct inode *inode; +- struct dentry *root; ++ struct dentry *root, *gssd_dentry; + struct net *net = data; + struct sunrpc_net *sn = net_generic(net, sunrpc_net_id); + int err; +@@ -1126,6 +1205,13 @@ rpc_fill_super(struct super_block *sb, v + return -ENOMEM; + if (rpc_populate(root, files, RPCAUTH_lockd, RPCAUTH_RootEOF, NULL)) + return -ENOMEM; ++ ++ gssd_dentry = rpc_gssd_dummy_populate(root, sn->gssd_dummy); ++ if (IS_ERR(gssd_dentry)) { ++ __rpc_depopulate(root, files, RPCAUTH_lockd, RPCAUTH_RootEOF); ++ return PTR_ERR(gssd_dentry); ++ } ++ + dprintk("RPC: sending pipefs MOUNT notification for net %p%s\n", + net, NET_NAME(net)); + mutex_lock(&sn->pipefs_sb_lock); +@@ -1140,6 +1226,7 @@ rpc_fill_super(struct super_block *sb, v + return 0; + + err_depopulate: ++ dput(gssd_dentry); + blocking_notifier_call_chain(&rpc_pipefs_notifier_list, + RPC_PIPEFS_UMOUNT, + sb); +diff -up linux-3.11.9-200.fc19.x86_64/net/sunrpc/sunrpc_syms.c.orig linux-3.11.9-200.fc19.x86_64/net/sunrpc/sunrpc_syms.c +--- linux-3.11.9-200.fc19.x86_64/net/sunrpc/sunrpc_syms.c.orig 2013-09-02 16:46:10.000000000 -0400 ++++ linux-3.11.9-200.fc19.x86_64/net/sunrpc/sunrpc_syms.c 2013-11-21 10:11:17.908026000 -0500 +@@ -44,12 +44,17 @@ static __net_init int sunrpc_init_net(st + if (err) + goto err_unixgid; + +- rpc_pipefs_init_net(net); ++ err = rpc_pipefs_init_net(net); ++ if (err) ++ goto err_pipefs; ++ + INIT_LIST_HEAD(&sn->all_clients); + spin_lock_init(&sn->rpc_client_lock); + spin_lock_init(&sn->rpcb_clnt_lock); + return 0; + ++err_pipefs: ++ unix_gid_cache_destroy(net); + err_unixgid: + ip_map_cache_destroy(net); + err_ipmap: +@@ -60,6 +65,7 @@ err_proc: + + static __net_exit void sunrpc_exit_net(struct net *net) + { ++ rpc_pipefs_exit_net(net); + unix_gid_cache_destroy(net); + ip_map_cache_destroy(net); + rpc_proc_exit(net); + diff --git a/kernels/linux-libre-rt/sunrpc-replace-gssd_running-with-more-reliable-check.patch b/kernels/linux-libre-rt/sunrpc-replace-gssd_running-with-more-reliable-check.patch new file mode 100644 index 000000000..8cd5c0090 --- /dev/null +++ b/kernels/linux-libre-rt/sunrpc-replace-gssd_running-with-more-reliable-check.patch @@ -0,0 +1,139 @@ +Bugzilla: N/A +Upstream-status: queued in NFS git tree (for 3.13/3.14?) + +Now that we have a more reliable method to tell if gssd is running, we +can replace the sn->gssd_running flag with a function that will query to +see if it's up and running. + +There's also no need to attempt an upcall that we know will fail, so +just return -EACCES if gssd isn't running. Finally, fix the warn_gss() +message not to claim that that the upcall timed out since we don't +necesarily perform one now when gssd isn't running, and remove the +extraneous newline from the message. + +Signed-off-by: Jeff Layton <jlayton@redhat.com> +Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> +--- + Fixed up to apply to 3.12.1 by Josh Boyer <jwboyer@fedoraproject.org> + + include/linux/sunrpc/rpc_pipe_fs.h | 2 ++ + net/sunrpc/auth_gss/auth_gss.c | 17 +++++++---------- + net/sunrpc/netns.h | 2 -- + net/sunrpc/rpc_pipe.c | 14 ++++++++++---- + 4 files changed, 19 insertions(+), 16 deletions(-) + +diff --git a/include/linux/sunrpc/rpc_pipe_fs.h b/include/linux/sunrpc/rpc_pipe_fs.h +index 85f1342..7f490be 100644 +--- a/include/linux/sunrpc/rpc_pipe_fs.h ++++ b/include/linux/sunrpc/rpc_pipe_fs.h +@@ -131,5 +131,7 @@ extern int rpc_unlink(struct dentry *); + extern int register_rpc_pipefs(void); + extern void unregister_rpc_pipefs(void); + ++extern bool gssd_running(struct net *net); ++ + #endif + #endif +diff --git a/net/sunrpc/auth_gss/auth_gss.c b/net/sunrpc/auth_gss/auth_gss.c +index 0846566..1ada878 100644 +--- a/net/sunrpc/auth_gss/auth_gss.c ++++ b/net/sunrpc/auth_gss/auth_gss.c +@@ -517,8 +517,7 @@ static void warn_gssd(void) + unsigned long now = jiffies; + + if (time_after(now, ratelimit)) { +- printk(KERN_WARNING "RPC: AUTH_GSS upcall timed out.\n" +- "Please check user daemon is running.\n"); ++ pr_warn("RPC: AUTH_GSS upcall failed. Please check user daemon is running.\n"); + ratelimit = now + 15*HZ; + } + } +@@ -581,7 +580,6 @@ gss_create_upcall(struct gss_auth *gss_auth, struct gss_cred *gss_cred) + struct rpc_pipe *pipe; + struct rpc_cred *cred = &gss_cred->gc_base; + struct gss_upcall_msg *gss_msg; +- unsigned long timeout; + DEFINE_WAIT(wait); + int err; + +@@ -589,17 +587,16 @@ gss_create_upcall(struct gss_auth *gss_auth, struct gss_cred *gss_cred) + __func__, from_kuid(&init_user_ns, cred->cr_uid)); + retry: + err = 0; +- /* Default timeout is 15s unless we know that gssd is not running */ +- timeout = 15 * HZ; +- if (!sn->gssd_running) +- timeout = HZ >> 2; ++ /* if gssd is down, just skip upcalling altogether */ ++ if (!gssd_running(net)) { ++ warn_gssd(); ++ return -EACCES; ++ } + gss_msg = gss_setup_upcall(gss_auth, cred); + if (PTR_ERR(gss_msg) == -EAGAIN) { + err = wait_event_interruptible_timeout(pipe_version_waitqueue, +- sn->pipe_version >= 0, timeout); ++ sn->pipe_version >= 0, 15 * HZ); + if (sn->pipe_version < 0) { +- if (err == 0) +- sn->gssd_running = 0; + warn_gssd(); + err = -EACCES; + } +diff --git a/net/sunrpc/netns.h b/net/sunrpc/netns.h +index 8a8e841..94e506f 100644 +--- a/net/sunrpc/netns.h ++++ b/net/sunrpc/netns.h +@@ -33,8 +33,6 @@ struct sunrpc_net { + int pipe_version; + atomic_t pipe_users; + struct proc_dir_entry *use_gssp_proc; +- +- unsigned int gssd_running; + }; + + extern int sunrpc_net_id; +diff --git a/net/sunrpc/rpc_pipe.c b/net/sunrpc/rpc_pipe.c +index 40aef18..ad444f3 100644 +--- a/net/sunrpc/rpc_pipe.c ++++ b/net/sunrpc/rpc_pipe.c +@@ -216,14 +216,11 @@ rpc_destroy_inode(struct inode *inode) + static int + rpc_pipe_open(struct inode *inode, struct file *filp) + { +- struct net *net = inode->i_sb->s_fs_info; +- struct sunrpc_net *sn = net_generic(net, sunrpc_net_id); + struct rpc_pipe *pipe; + int first_open; + int res = -ENXIO; + + mutex_lock(&inode->i_mutex); +- sn->gssd_running = 1; + pipe = RPC_I(inode)->pipe; + if (pipe == NULL) + goto out; +@@ -1231,7 +1228,6 @@ int rpc_pipefs_init_net(struct net *net) + return PTR_ERR(sn->gssd_dummy); + + mutex_init(&sn->pipefs_sb_lock); +- sn->gssd_running = 1; + sn->pipe_version = -1; + return 0; + } +@@ -1385,6 +1381,16 @@ err_depopulate: + return err; + } + ++bool ++gssd_running(struct net *net) ++{ ++ struct sunrpc_net *sn = net_generic(net, sunrpc_net_id); ++ struct rpc_pipe *pipe = sn->gssd_dummy; ++ ++ return pipe->nreaders || pipe->nwriters; ++} ++EXPORT_SYMBOL_GPL(gssd_running); ++ + static struct dentry * + rpc_mount(struct file_system_type *fs_type, + int flags, const char *dev_name, void *data) diff --git a/kernels/linux-libre-rt/timers-do-not-raise-softirq-unconditionally.patch b/kernels/linux-libre-rt/timers-do-not-raise-softirq-unconditionally.patch deleted file mode 100644 index d8f01f2d6..000000000 --- a/kernels/linux-libre-rt/timers-do-not-raise-softirq-unconditionally.patch +++ /dev/null @@ -1,156 +0,0 @@ -From 35b6173e6176fc978c635f9e07f1778eff7b76e7 Mon Sep 17 00:00:00 2001 -From: Thomas Gleixner <tglx@linutronix.de> -Date: Thu, 7 Nov 2013 12:21:11 +0100 -Subject: [PATCH] timers: do not raise softirq unconditionally - -Mike, - -On Thu, 7 Nov 2013, Mike Galbraith wrote: - -> On Thu, 2013-11-07 at 04:26 +0100, Mike Galbraith wrote: -> > On Wed, 2013-11-06 at 18:49 +0100, Thomas Gleixner wrote: -> -> > > I bet you are trying to work around some of the side effects of the -> > > occasional tick which is still necessary despite of full nohz, right? -> > -> > Nope, I wanted to check out cost of nohz_full for rt, and found that it -> > doesn't work at all instead, looked, and found that the sole running -> > task has just awakened ksoftirqd when it wants to shut the tick down, so -> > that shutdown never happens. -> -> Like so in virgin 3.10-rt. Box is x3550 M3 booted nowatchdog -> rcu_nocbs=1-3 nohz_full=1-3, and CPUs1-3 are completely isolated via -> cpusets as well. - -well, that very same problem is in mainline if you add "threadirqs" to -the command line. But we can be smart about this. The untested patch -below should address that issue. If that works on mainline we can -adapt it for RT (needs a trylock(&base->lock) there). - -Though it's not a full solution. It needs some thought versus the -softirq code of timers. Assume we have only one timer queued 1000 -ticks into the future. So this change will cause the timer softirq not -to be called until that timer expires and then the timer softirq is -going to do 1000 loops until it catches up with jiffies. That's -anything but pretty ... - -What worries me more is this one: - - pert-5229 [003] d..h1.. 684.482618: softirq_raise: vec=9 [action=RCU] - -The CPU has no callbacks as you shoved them over to cpu 0, so why is -the RCU softirq raised? - -Thanks, - - tglx ------------------- -Message-id: <alpine.DEB.2.02.1311071158350.23353@ionos.tec.linutronix.de> -|CONFIG_NO_HZ_FULL + CONFIG_PREEMPT_RT_FULL = nogo -Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> ---- - include/linux/hrtimer.h | 3 +-- - kernel/hrtimer.c | 31 +++++++------------------------ - kernel/timer.c | 23 ++++++++++++++++++++--- - 3 files changed, 28 insertions(+), 29 deletions(-) - ---- a/include/linux/hrtimer.h -+++ b/include/linux/hrtimer.h -@@ -461,9 +461,8 @@ extern int schedule_hrtimeout_range_cloc - unsigned long delta, const enum hrtimer_mode mode, int clock); - extern int schedule_hrtimeout(ktime_t *expires, const enum hrtimer_mode mode); - --/* Soft interrupt function to run the hrtimer queues: */ -+/* Called from the periodic timer tick */ - extern void hrtimer_run_queues(void); --extern void hrtimer_run_pending(void); - - /* Bootup initialization: */ - extern void __init hrtimers_init(void); ---- a/kernel/hrtimer.c -+++ b/kernel/hrtimer.c -@@ -1694,30 +1694,6 @@ static void run_hrtimer_softirq(struct s - } - - /* -- * Called from timer softirq every jiffy, expire hrtimers: -- * -- * For HRT its the fall back code to run the softirq in the timer -- * softirq context in case the hrtimer initialization failed or has -- * not been done yet. -- */ --void hrtimer_run_pending(void) --{ -- if (hrtimer_hres_active()) -- return; -- -- /* -- * This _is_ ugly: We have to check in the softirq context, -- * whether we can switch to highres and / or nohz mode. The -- * clocksource switch happens in the timer interrupt with -- * xtime_lock held. Notification from there only sets the -- * check bit in the tick_oneshot code, otherwise we might -- * deadlock vs. xtime_lock. -- */ -- if (tick_check_oneshot_change(!hrtimer_is_hres_enabled())) -- hrtimer_switch_to_hres(); --} -- --/* - * Called from hardirq context every jiffy - */ - void hrtimer_run_queues(void) -@@ -1730,6 +1706,13 @@ void hrtimer_run_queues(void) - if (hrtimer_hres_active()) - return; - -+ /* -+ * Check whether we can switch to highres mode. -+ */ -+ if (tick_check_oneshot_change(!hrtimer_is_hres_enabled()) -+ && hrtimer_switch_to_hres()) -+ return; -+ - for (index = 0; index < HRTIMER_MAX_CLOCK_BASES; index++) { - base = &cpu_base->clock_base[index]; - if (!timerqueue_getnext(&base->active)) ---- a/kernel/timer.c -+++ b/kernel/timer.c -@@ -1439,8 +1439,6 @@ static void run_timer_softirq(struct sof - { - struct tvec_base *base = __this_cpu_read(tvec_bases); - -- hrtimer_run_pending(); -- - if (time_after_eq(jiffies, base->timer_jiffies)) - __run_timers(base); - } -@@ -1450,8 +1448,27 @@ static void run_timer_softirq(struct sof - */ - void run_local_timers(void) - { -+ struct tvec_base *base = __this_cpu_read(tvec_bases); -+ - hrtimer_run_queues(); -- raise_softirq(TIMER_SOFTIRQ); -+ /* -+ * We can access this lockless as we are in the timer -+ * interrupt. If there are no timers queued, nothing to do in -+ * the timer softirq. -+ */ -+ if (!spin_do_trylock(&base->lock)) { -+ raise_softirq(TIMER_SOFTIRQ); -+ return; -+ } -+ if (!base->active_timers) -+ goto out; -+ -+ /* Check whether the next pending timer has expired */ -+ if (time_before_eq(base->next_timer, jiffies)) -+ raise_softirq(TIMER_SOFTIRQ); -+out: -+ rt_spin_unlock_after_trylock_in_irq(&base->lock); -+ - } - - #ifdef __ARCH_WANT_SYS_ALARM |