From: Vladimir Kondratiev vladimir.kondratiev@intel.com
[ Upstream commit 3b1313eb32c499d46dc4c3e896d19d9564c879c4 ]
Report L1 caches as shared per core; L2 - per cluster.
This fixes "perf" that went crazy if shared_cpu_map attribute not reported on sysfs, in form of
/sys/devices/system/cpu/cpu*/cache/index*/shared_cpu_list /sys/devices/system/cpu/cpu*/cache/index*/shared_cpu_map
Signed-off-by: Vladimir Kondratiev vladimir.kondratiev@intel.com Signed-off-by: Paul Burton paulburton@kernel.org Cc: Ralf Baechle ralf@linux-mips.org Cc: James Hogan jhogan@kernel.org Cc: linux-mips@vger.kernel.org Cc: linux-kernel@vger.kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- arch/mips/kernel/cacheinfo.c | 27 ++++++++++++++++++++++++++- 1 file changed, 26 insertions(+), 1 deletion(-)
diff --git a/arch/mips/kernel/cacheinfo.c b/arch/mips/kernel/cacheinfo.c index 428ef2189203..3ea95568ece4 100644 --- a/arch/mips/kernel/cacheinfo.c +++ b/arch/mips/kernel/cacheinfo.c @@ -61,6 +61,25 @@ static int __init_cache_level(unsigned int cpu) return 0; }
+static void fill_cpumask_siblings(int cpu, cpumask_t *cpu_map) +{ + int cpu1; + + for_each_possible_cpu(cpu1) + if (cpus_are_siblings(cpu, cpu1)) + cpumask_set_cpu(cpu1, cpu_map); +} + +static void fill_cpumask_cluster(int cpu, cpumask_t *cpu_map) +{ + int cpu1; + int cluster = cpu_cluster(&cpu_data[cpu]); + + for_each_possible_cpu(cpu1) + if (cpu_cluster(&cpu_data[cpu1]) == cluster) + cpumask_set_cpu(cpu1, cpu_map); +} + static int __populate_cache_leaves(unsigned int cpu) { struct cpuinfo_mips *c = ¤t_cpu_data; @@ -68,14 +87,20 @@ static int __populate_cache_leaves(unsigned int cpu) struct cacheinfo *this_leaf = this_cpu_ci->info_list;
if (c->icache.waysize) { + /* L1 caches are per core */ + fill_cpumask_siblings(cpu, &this_leaf->shared_cpu_map); populate_cache(dcache, this_leaf, 1, CACHE_TYPE_DATA); + fill_cpumask_siblings(cpu, &this_leaf->shared_cpu_map); populate_cache(icache, this_leaf, 1, CACHE_TYPE_INST); } else { populate_cache(dcache, this_leaf, 1, CACHE_TYPE_UNIFIED); }
- if (c->scache.waysize) + if (c->scache.waysize) { + /* L2 cache is per cluster */ + fill_cpumask_cluster(cpu, &this_leaf->shared_cpu_map); populate_cache(scache, this_leaf, 2, CACHE_TYPE_UNIFIED); + }
if (c->tcache.waysize) populate_cache(tcache, this_leaf, 3, CACHE_TYPE_UNIFIED);
From: Jouni Hogander jouni.hogander@unikie.com
[ Upstream commit a4a3893114a41e365274d5fab5d9ff5acc235ff0 ]
__sanitizer_cov_trace_pc() is not linked in and causing link failure if KCOV_INSTRUMENT is enabled. Fix this by disabling instrumentation for compressed image.
Signed-off-by: Jouni Hogander jouni.hogander@unikie.com Signed-off-by: Paul Burton paulburton@kernel.org Cc: Lukas Bulwahn lukas.bulwahn@gmail.com Cc: linux-mips@vger.kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- arch/mips/boot/compressed/Makefile | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/arch/mips/boot/compressed/Makefile b/arch/mips/boot/compressed/Makefile index 172801ed35b8..d859f079b771 100644 --- a/arch/mips/boot/compressed/Makefile +++ b/arch/mips/boot/compressed/Makefile @@ -29,6 +29,9 @@ KBUILD_AFLAGS := $(KBUILD_AFLAGS) -D__ASSEMBLY__ \ -DBOOT_HEAP_SIZE=$(BOOT_HEAP_SIZE) \ -DKERNEL_ENTRY=$(VMLINUX_ENTRY_ADDRESS)
+# Prevents link failures: __sanitizer_cov_trace_pc() is not linked in. +KCOV_INSTRUMENT := n + # decompressor objects (linked with vmlinuz) vmlinuzobjs-y := $(obj)/head.o $(obj)/decompress.o $(obj)/string.o
From: John Stultz john.stultz@linaro.org
[ Upstream commit 2f42e05b942fe2fbfb9bbc6e34e1dd8c3ce4f3a4 ]
In some cases we seem to submit two transactions in a row, which causes us to lose track of the first. If we then cancel the request, we may still get an interrupt, which traverses a null ds_run value.
So try to avoid starting a new transaction if the ds_run value is set.
While this patch avoids the null pointer crash, I've had some reports of the k3dma driver still getting confused, which suggests the ds_run/ds_done value handling still isn't quite right. However, I've not run into an issue recently with it so I think this patch is worth pushing upstream to avoid the crash.
Signed-off-by: John Stultz john.stultz@linaro.org [add ss tag] Link: https://lore.kernel.org/r/20191218190906.6641-1-john.stultz@linaro.org Signed-off-by: Vinod Koul vkoul@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/dma/k3dma.c | 12 +++++++++--- 1 file changed, 9 insertions(+), 3 deletions(-)
diff --git a/drivers/dma/k3dma.c b/drivers/dma/k3dma.c index 6bfa217ed6d0..ba3c3791f9dc 100644 --- a/drivers/dma/k3dma.c +++ b/drivers/dma/k3dma.c @@ -222,9 +222,11 @@ static irqreturn_t k3_dma_int_handler(int irq, void *dev_id) c = p->vchan; if (c && (tc1 & BIT(i))) { spin_lock_irqsave(&c->vc.lock, flags); - vchan_cookie_complete(&p->ds_run->vd); - p->ds_done = p->ds_run; - p->ds_run = NULL; + if (p->ds_run != NULL) { + vchan_cookie_complete(&p->ds_run->vd); + p->ds_done = p->ds_run; + p->ds_run = NULL; + } spin_unlock_irqrestore(&c->vc.lock, flags); } if (c && (tc2 & BIT(i))) { @@ -264,6 +266,10 @@ static int k3_dma_start_txd(struct k3_dma_chan *c) if (BIT(c->phy->idx) & k3_dma_get_chan_stat(d)) return -EAGAIN;
+ /* Avoid losing track of ds_run if a transaction is in flight */ + if (c->phy->ds_run) + return -EAGAIN; + if (vd) { struct k3_dma_desc_sw *ds = container_of(vd, struct k3_dma_desc_sw, vd);
From: Alexandra Winter wintera@linux.ibm.com
[ Upstream commit 68c57bfd52836e31bff33e5e1fc64029749d2c35 ]
Symptom: Error message "Configuring the VNIC characteristics failed" in dmesg whenever an OSA interface on z15 is set online.
The VNIC characteristics get re-programmed when setting a L2 device online. This follows the selected 'wanted' characteristics - with the exception that the INVISIBLE characteristic unconditionally gets switched off.
For devices that don't support INVISIBLE (ie. OSA), the resulting IO failure raises a noisy error message ("Configuring the VNIC characteristics failed"). For IQD, INVISIBLE is off by default anyways.
So don't unnecessarily special-case the INVISIBLE characteristic, and thereby suppress the misleading error message on OSA devices.
Fixes: caa1f0b10d18 ("s390/qeth: add VNICC enable/disable support") Signed-off-by: Alexandra Winter wintera@linux.ibm.com Reviewed-by: Julian Wiedmann jwi@linux.ibm.com Signed-off-by: Julian Wiedmann jwi@linux.ibm.com Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/s390/net/qeth_l2_main.c | 1 - 1 file changed, 1 deletion(-)
diff --git a/drivers/s390/net/qeth_l2_main.c b/drivers/s390/net/qeth_l2_main.c index 95669d47c389..66bc6f1ffd34 100644 --- a/drivers/s390/net/qeth_l2_main.c +++ b/drivers/s390/net/qeth_l2_main.c @@ -2367,7 +2367,6 @@ static void qeth_l2_vnicc_init(struct qeth_card *card) error = qeth_l2_vnicc_recover_timeout(card, QETH_VNICC_LEARNING, timeout); chars_tmp = card->options.vnicc.wanted_chars ^ QETH_VNICC_DEFAULT; - chars_tmp |= QETH_VNICC_BRIDGE_INVISIBLE; chars_len = sizeof(card->options.vnicc.wanted_chars) * BITS_PER_BYTE; for_each_set_bit(i, &chars_tmp, chars_len) { vnicc = BIT(i);
From: Alexandra Winter wintera@linux.ibm.com
[ Upstream commit e8a66d800471e2df7f0b484e2e46898b21d1fa82 ]
Symptom: After vnicc/rx_bcast has been manually set to 0, bridge_* sysfs parameters can still be set or written. Only occurs on HiperSockets, as OSA doesn't support changing rx_bcast.
Vnic characteristics and bridgeport settings are mutually exclusive. rx_bcast defaults to 1, so manually setting it to 0 should disable bridge_* parameters.
Instead it makes sense here to check the supported mask. If the card does not support vnicc at all, bridge commands are always allowed.
Fixes: caa1f0b10d18 ("s390/qeth: add VNICC enable/disable support") Signed-off-by: Alexandra Winter wintera@linux.ibm.com Signed-off-by: Julian Wiedmann jwi@linux.ibm.com Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/s390/net/qeth_l2_main.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/drivers/s390/net/qeth_l2_main.c b/drivers/s390/net/qeth_l2_main.c index 66bc6f1ffd34..c238b190b3c9 100644 --- a/drivers/s390/net/qeth_l2_main.c +++ b/drivers/s390/net/qeth_l2_main.c @@ -2285,8 +2285,7 @@ int qeth_l2_vnicc_get_timeout(struct qeth_card *card, u32 *timeout) /* check if VNICC is currently enabled */ bool qeth_l2_vnicc_is_in_use(struct qeth_card *card) { - /* if everything is turned off, VNICC is not active */ - if (!card->options.vnicc.cur_chars) + if (!card->options.vnicc.sup_chars) return false; /* default values are only OK if rx_bcast was not enabled by user * or the card is offline.
From: Taehee Yoo ap420073@gmail.com
[ Upstream commit 3ed0a1d563903bdb4b4c36c58c4d9c1bcb23a6e6 ]
The supervision frame is L2 frame. When supervision frame is created, hsr module doesn't set network header. If tap routine is enabled, dev_queue_xmit_nit() is called and it checks network_header. If network_header pointer wasn't set(or invalid), it resets network_header and warns. In order to avoid unnecessary warning message, resetting network_header is needed.
Test commands: ip netns add nst ip link add veth0 type veth peer name veth1 ip link add veth2 type veth peer name veth3 ip link set veth1 netns nst ip link set veth3 netns nst ip link set veth0 up ip link set veth2 up ip link add hsr0 type hsr slave1 veth0 slave2 veth2 ip a a 192.168.100.1/24 dev hsr0 ip link set hsr0 up ip netns exec nst ip link set veth1 up ip netns exec nst ip link set veth3 up ip netns exec nst ip link add hsr1 type hsr slave1 veth1 slave2 veth3 ip netns exec nst ip a a 192.168.100.2/24 dev hsr1 ip netns exec nst ip link set hsr1 up tcpdump -nei veth0
Splat looks like: [ 175.852292][ C3] protocol 88fb is buggy, dev veth0
Fixes: f421436a591d ("net/hsr: Add support for the High-availability Seamless Redundancy protocol (HSRv0)") Signed-off-by: Taehee Yoo ap420073@gmail.com Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Sasha Levin sashal@kernel.org --- net/hsr/hsr_device.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/net/hsr/hsr_device.c b/net/hsr/hsr_device.c index a97bf326b231..c27577af32e3 100644 --- a/net/hsr/hsr_device.c +++ b/net/hsr/hsr_device.c @@ -281,6 +281,8 @@ static void send_hsr_supervision_frame(struct hsr_port *master, skb->dev->dev_addr, skb->len) <= 0) goto out; skb_reset_mac_header(skb); + skb_reset_network_header(skb); + skb_reset_transport_header(skb);
if (hsrVer > 0) { hsr_tag = skb_put(skb, sizeof(struct hsr_tag));
From: "Alexander.Barabash@dell.com" Alexander.Barabash@dell.com
[ Upstream commit b0b5ce1010ffc50015eaec72b0028aaae3f526bb ]
If dma_alloc_coherent() returns NULL in ioat_alloc_ring(), ring allocation must not proceed.
Until now, if the first call to dma_alloc_coherent() in ioat_alloc_ring() returned NULL, the processing could proceed, failing with NULL-pointer dereferencing further down the line.
Signed-off-by: Alexander Barabash alexander.barabash@dell.com Acked-by: Dave Jiang dave.jiang@intel.com Link: https://lore.kernel.org/r/75e9c0e84c3345d693c606c64f8b9ab5@x13pwhopdag1307.A... Signed-off-by: Vinod Koul vkoul@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/dma/ioat/dma.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/dma/ioat/dma.c b/drivers/dma/ioat/dma.c index 23fb2fa04000..b94cece58b98 100644 --- a/drivers/dma/ioat/dma.c +++ b/drivers/dma/ioat/dma.c @@ -388,10 +388,11 @@ ioat_alloc_ring(struct dma_chan *c, int order, gfp_t flags)
descs->virt = dma_alloc_coherent(to_dev(ioat_chan), SZ_2M, &descs->hw, flags); - if (!descs->virt && (i > 0)) { + if (!descs->virt) { int idx;
for (idx = 0; idx < i; idx++) { + descs = &ioat_chan->descs[idx]; dma_free_coherent(to_dev(ioat_chan), SZ_2M, descs->virt, descs->hw); descs->virt = NULL;
From: Nick Desaulniers ndesaulniers@google.com
[ Upstream commit 780a0cfda9006a9a22d6473c2d4c527f5c68eb2e ]
Hexagon requires that register predicates in assembly be parenthesized.
Link: https://github.com/ClangBuiltLinux/linux/issues/754 Link: http://lkml.kernel.org/r/20191209222956.239798-3-ndesaulniers@google.com Signed-off-by: Nick Desaulniers ndesaulniers@google.com Suggested-by: Sid Manning sidneym@codeaurora.org Acked-by: Brian Cain bcain@codeaurora.org Cc: Lee Jones lee.jones@linaro.org Cc: Andy Shevchenko andriy.shevchenko@linux.intel.com Cc: Tuowen Zhao ztuowen@gmail.com Cc: Mika Westerberg mika.westerberg@linux.intel.com Cc: Luis Chamberlain mcgrof@kernel.org Cc: Greg Kroah-Hartman gregkh@linuxfoundation.org Cc: Alexios Zavras alexios.zavras@intel.com Cc: Allison Randal allison@lohutok.net Cc: Will Deacon will@kernel.org Cc: Richard Fontana rfontana@redhat.com Cc: Thomas Gleixner tglx@linutronix.de Cc: Peter Zijlstra peterz@infradead.org Cc: Boqun Feng boqun.feng@gmail.com Cc: Ingo Molnar mingo@redhat.com Cc: Geert Uytterhoeven geert@linux-m68k.org Signed-off-by: Andrew Morton akpm@linux-foundation.org Signed-off-by: Linus Torvalds torvalds@linux-foundation.org Signed-off-by: Sasha Levin sashal@kernel.org --- arch/hexagon/include/asm/atomic.h | 8 ++++---- arch/hexagon/include/asm/bitops.h | 8 ++++---- arch/hexagon/include/asm/cmpxchg.h | 2 +- arch/hexagon/include/asm/futex.h | 6 +++--- arch/hexagon/include/asm/spinlock.h | 20 ++++++++++---------- arch/hexagon/kernel/vm_entry.S | 2 +- 6 files changed, 23 insertions(+), 23 deletions(-)
diff --git a/arch/hexagon/include/asm/atomic.h b/arch/hexagon/include/asm/atomic.h index 311b9894ccc8..15cca7f1fded 100644 --- a/arch/hexagon/include/asm/atomic.h +++ b/arch/hexagon/include/asm/atomic.h @@ -105,7 +105,7 @@ static inline void atomic_##op(int i, atomic_t *v) \ "1: %0 = memw_locked(%1);\n" \ " %0 = "#op "(%0,%2);\n" \ " memw_locked(%1,P3)=%0;\n" \ - " if !P3 jump 1b;\n" \ + " if (!P3) jump 1b;\n" \ : "=&r" (output) \ : "r" (&v->counter), "r" (i) \ : "memory", "p3" \ @@ -121,7 +121,7 @@ static inline int atomic_##op##_return(int i, atomic_t *v) \ "1: %0 = memw_locked(%1);\n" \ " %0 = "#op "(%0,%2);\n" \ " memw_locked(%1,P3)=%0;\n" \ - " if !P3 jump 1b;\n" \ + " if (!P3) jump 1b;\n" \ : "=&r" (output) \ : "r" (&v->counter), "r" (i) \ : "memory", "p3" \ @@ -138,7 +138,7 @@ static inline int atomic_fetch_##op(int i, atomic_t *v) \ "1: %0 = memw_locked(%2);\n" \ " %1 = "#op "(%0,%3);\n" \ " memw_locked(%2,P3)=%1;\n" \ - " if !P3 jump 1b;\n" \ + " if (!P3) jump 1b;\n" \ : "=&r" (output), "=&r" (val) \ : "r" (&v->counter), "r" (i) \ : "memory", "p3" \ @@ -187,7 +187,7 @@ static inline int atomic_fetch_add_unless(atomic_t *v, int a, int u) " }" " memw_locked(%2, p3) = %1;" " {" - " if !p3 jump 1b;" + " if (!p3) jump 1b;" " }" "2:" : "=&r" (__oldval), "=&r" (tmp) diff --git a/arch/hexagon/include/asm/bitops.h b/arch/hexagon/include/asm/bitops.h index 2691a1857d20..634306cda006 100644 --- a/arch/hexagon/include/asm/bitops.h +++ b/arch/hexagon/include/asm/bitops.h @@ -52,7 +52,7 @@ static inline int test_and_clear_bit(int nr, volatile void *addr) "1: R12 = memw_locked(R10);\n" " { P0 = tstbit(R12,R11); R12 = clrbit(R12,R11); }\n" " memw_locked(R10,P1) = R12;\n" - " {if !P1 jump 1b; %0 = mux(P0,#1,#0);}\n" + " {if (!P1) jump 1b; %0 = mux(P0,#1,#0);}\n" : "=&r" (oldval) : "r" (addr), "r" (nr) : "r10", "r11", "r12", "p0", "p1", "memory" @@ -76,7 +76,7 @@ static inline int test_and_set_bit(int nr, volatile void *addr) "1: R12 = memw_locked(R10);\n" " { P0 = tstbit(R12,R11); R12 = setbit(R12,R11); }\n" " memw_locked(R10,P1) = R12;\n" - " {if !P1 jump 1b; %0 = mux(P0,#1,#0);}\n" + " {if (!P1) jump 1b; %0 = mux(P0,#1,#0);}\n" : "=&r" (oldval) : "r" (addr), "r" (nr) : "r10", "r11", "r12", "p0", "p1", "memory" @@ -102,7 +102,7 @@ static inline int test_and_change_bit(int nr, volatile void *addr) "1: R12 = memw_locked(R10);\n" " { P0 = tstbit(R12,R11); R12 = togglebit(R12,R11); }\n" " memw_locked(R10,P1) = R12;\n" - " {if !P1 jump 1b; %0 = mux(P0,#1,#0);}\n" + " {if (!P1) jump 1b; %0 = mux(P0,#1,#0);}\n" : "=&r" (oldval) : "r" (addr), "r" (nr) : "r10", "r11", "r12", "p0", "p1", "memory" @@ -237,7 +237,7 @@ static inline int ffs(int x) int r;
asm("{ P0 = cmp.eq(%1,#0); %0 = ct0(%1);}\n" - "{ if P0 %0 = #0; if !P0 %0 = add(%0,#1);}\n" + "{ if (P0) %0 = #0; if (!P0) %0 = add(%0,#1);}\n" : "=&r" (r) : "r" (x) : "p0"); diff --git a/arch/hexagon/include/asm/cmpxchg.h b/arch/hexagon/include/asm/cmpxchg.h index a6e34e2acbba..db258424059f 100644 --- a/arch/hexagon/include/asm/cmpxchg.h +++ b/arch/hexagon/include/asm/cmpxchg.h @@ -44,7 +44,7 @@ static inline unsigned long __xchg(unsigned long x, volatile void *ptr, __asm__ __volatile__ ( "1: %0 = memw_locked(%1);\n" /* load into retval */ " memw_locked(%1,P0) = %2;\n" /* store into memory */ - " if !P0 jump 1b;\n" + " if (!P0) jump 1b;\n" : "=&r" (retval) : "r" (ptr), "r" (x) : "memory", "p0" diff --git a/arch/hexagon/include/asm/futex.h b/arch/hexagon/include/asm/futex.h index c889f5993ecd..e8e5e47afb37 100644 --- a/arch/hexagon/include/asm/futex.h +++ b/arch/hexagon/include/asm/futex.h @@ -16,7 +16,7 @@ /* For example: %1 = %4 */ \ insn \ "2: memw_locked(%3,p2) = %1;\n" \ - " if !p2 jump 1b;\n" \ + " if (!p2) jump 1b;\n" \ " %1 = #0;\n" \ "3:\n" \ ".section .fixup,"ax"\n" \ @@ -84,10 +84,10 @@ futex_atomic_cmpxchg_inatomic(u32 *uval, u32 __user *uaddr, u32 oldval, "1: %1 = memw_locked(%3)\n" " {\n" " p2 = cmp.eq(%1,%4)\n" - " if !p2.new jump:NT 3f\n" + " if (!p2.new) jump:NT 3f\n" " }\n" "2: memw_locked(%3,p2) = %5\n" - " if !p2 jump 1b\n" + " if (!p2) jump 1b\n" "3:\n" ".section .fixup,"ax"\n" "4: %0 = #%6\n" diff --git a/arch/hexagon/include/asm/spinlock.h b/arch/hexagon/include/asm/spinlock.h index 48020863f53a..e090f6a151c2 100644 --- a/arch/hexagon/include/asm/spinlock.h +++ b/arch/hexagon/include/asm/spinlock.h @@ -44,9 +44,9 @@ static inline void arch_read_lock(arch_rwlock_t *lock) __asm__ __volatile__( "1: R6 = memw_locked(%0);\n" " { P3 = cmp.ge(R6,#0); R6 = add(R6,#1);}\n" - " { if !P3 jump 1b; }\n" + " { if (!P3) jump 1b; }\n" " memw_locked(%0,P3) = R6;\n" - " { if !P3 jump 1b; }\n" + " { if (!P3) jump 1b; }\n" : : "r" (&lock->lock) : "memory", "r6", "p3" @@ -60,7 +60,7 @@ static inline void arch_read_unlock(arch_rwlock_t *lock) "1: R6 = memw_locked(%0);\n" " R6 = add(R6,#-1);\n" " memw_locked(%0,P3) = R6\n" - " if !P3 jump 1b;\n" + " if (!P3) jump 1b;\n" : : "r" (&lock->lock) : "memory", "r6", "p3" @@ -75,7 +75,7 @@ static inline int arch_read_trylock(arch_rwlock_t *lock) __asm__ __volatile__( " R6 = memw_locked(%1);\n" " { %0 = #0; P3 = cmp.ge(R6,#0); R6 = add(R6,#1);}\n" - " { if !P3 jump 1f; }\n" + " { if (!P3) jump 1f; }\n" " memw_locked(%1,P3) = R6;\n" " { %0 = P3 }\n" "1:\n" @@ -92,9 +92,9 @@ static inline void arch_write_lock(arch_rwlock_t *lock) __asm__ __volatile__( "1: R6 = memw_locked(%0)\n" " { P3 = cmp.eq(R6,#0); R6 = #-1;}\n" - " { if !P3 jump 1b; }\n" + " { if (!P3) jump 1b; }\n" " memw_locked(%0,P3) = R6;\n" - " { if !P3 jump 1b; }\n" + " { if (!P3) jump 1b; }\n" : : "r" (&lock->lock) : "memory", "r6", "p3" @@ -108,7 +108,7 @@ static inline int arch_write_trylock(arch_rwlock_t *lock) __asm__ __volatile__( " R6 = memw_locked(%1)\n" " { %0 = #0; P3 = cmp.eq(R6,#0); R6 = #-1;}\n" - " { if !P3 jump 1f; }\n" + " { if (!P3) jump 1f; }\n" " memw_locked(%1,P3) = R6;\n" " %0 = P3;\n" "1:\n" @@ -131,9 +131,9 @@ static inline void arch_spin_lock(arch_spinlock_t *lock) __asm__ __volatile__( "1: R6 = memw_locked(%0);\n" " P3 = cmp.eq(R6,#0);\n" - " { if !P3 jump 1b; R6 = #1; }\n" + " { if (!P3) jump 1b; R6 = #1; }\n" " memw_locked(%0,P3) = R6;\n" - " { if !P3 jump 1b; }\n" + " { if (!P3) jump 1b; }\n" : : "r" (&lock->lock) : "memory", "r6", "p3" @@ -153,7 +153,7 @@ static inline unsigned int arch_spin_trylock(arch_spinlock_t *lock) __asm__ __volatile__( " R6 = memw_locked(%1);\n" " P3 = cmp.eq(R6,#0);\n" - " { if !P3 jump 1f; R6 = #1; %0 = #0; }\n" + " { if (!P3) jump 1f; R6 = #1; %0 = #0; }\n" " memw_locked(%1,P3) = R6;\n" " %0 = P3;\n" "1:\n" diff --git a/arch/hexagon/kernel/vm_entry.S b/arch/hexagon/kernel/vm_entry.S index 67c6ccc14770..9f4a73ff7203 100644 --- a/arch/hexagon/kernel/vm_entry.S +++ b/arch/hexagon/kernel/vm_entry.S @@ -382,7 +382,7 @@ ret_from_fork: R26.L = #LO(do_work_pending); R0 = #VM_INT_DISABLE; } - if P0 jump check_work_pending + if (P0) jump check_work_pending { R0 = R25; callr R24
From: Nick Desaulniers ndesaulniers@google.com
[ Upstream commit 63e80314ab7cf4783526d2e44ee57a90514911c9 ]
Clang cannot translate the string "r30" into a valid register yet.
Link: https://github.com/ClangBuiltLinux/linux/issues/755 Link: http://lkml.kernel.org/r/20191028155722.23419-1-ndesaulniers@google.com Signed-off-by: Nick Desaulniers ndesaulniers@google.com Suggested-by: Sid Manning sidneym@quicinc.com Reviewed-by: Brian Cain bcain@codeaurora.org Cc: Allison Randal allison@lohutok.net Cc: Greg Kroah-Hartman gregkh@linuxfoundation.org Cc: Richard Fontana rfontana@redhat.com Cc: Thomas Gleixner tglx@linutronix.de Signed-off-by: Andrew Morton akpm@linux-foundation.org Signed-off-by: Linus Torvalds torvalds@linux-foundation.org Signed-off-by: Sasha Levin sashal@kernel.org --- arch/hexagon/kernel/stacktrace.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-)
diff --git a/arch/hexagon/kernel/stacktrace.c b/arch/hexagon/kernel/stacktrace.c index 41866a06adf7..ec4ef682923d 100644 --- a/arch/hexagon/kernel/stacktrace.c +++ b/arch/hexagon/kernel/stacktrace.c @@ -24,8 +24,6 @@ #include <linux/thread_info.h> #include <linux/module.h>
-register unsigned long current_frame_pointer asm("r30"); - struct stackframe { unsigned long fp; unsigned long rets; @@ -43,7 +41,7 @@ void save_stack_trace(struct stack_trace *trace)
low = (unsigned long)task_stack_page(current); high = low + THREAD_SIZE; - fp = current_frame_pointer; + fp = (unsigned long)__builtin_frame_address(0);
while (fp >= low && fp <= (high - sizeof(*frame))) { frame = (struct stackframe *)fp;
From: Kai Li li.kai4@h3c.com
[ Upstream commit 397eac17f86f404f5ba31d8c3e39ec3124b39fd3 ]
If journal is dirty when mount, it will be replayed but jbd2 sb log tail cannot be updated to mark a new start because journal->j_flag has already been set with JBD2_ABORT first in journal_init_common.
When a new transaction is committed, it will be recored in block 1 first(journal->j_tail is set to 1 in journal_reset). If emergency restart happens again before journal super block is updated unfortunately, the new recorded trans will not be replayed in the next mount.
The following steps describe this procedure in detail. 1. mount and touch some files 2. these transactions are committed to journal area but not checkpointed 3. emergency restart 4. mount again and its journals are replayed 5. journal super block's first s_start is 1, but its s_seq is not updated 6. touch a new file and its trans is committed but not checkpointed 7. emergency restart again 8. mount and journal is dirty, but trans committed in 6 will not be replayed.
This exception happens easily when this lun is used by only one node. If it is used by multi-nodes, other node will replay its journal and its journal super block will be updated after recovery like what this patch does.
ocfs2_recover_node->ocfs2_replay_journal.
The following jbd2 journal can be generated by touching a new file after journal is replayed, and seq 15 is the first valid commit, but first seq is 13 in journal super block.
logdump: Block 0: Journal Superblock Seq: 0 Type: 4 (JBD2_SUPERBLOCK_V2) Blocksize: 4096 Total Blocks: 32768 First Block: 1 First Commit ID: 13 Start Log Blknum: 1 Error: 0 Feature Compat: 0 Feature Incompat: 2 block64 Feature RO compat: 0 Journal UUID: 4ED3822C54294467A4F8E87D2BA4BC36 FS Share Cnt: 1 Dynamic Superblk Blknum: 0 Per Txn Block Limit Journal: 0 Data: 0
Block 1: Journal Commit Block Seq: 14 Type: 2 (JBD2_COMMIT_BLOCK)
Block 2: Journal Descriptor Seq: 15 Type: 1 (JBD2_DESCRIPTOR_BLOCK) No. Blocknum Flags 0. 587 none UUID: 00000000000000000000000000000000 1. 8257792 JBD2_FLAG_SAME_UUID 2. 619 JBD2_FLAG_SAME_UUID 3. 24772864 JBD2_FLAG_SAME_UUID 4. 8257802 JBD2_FLAG_SAME_UUID 5. 513 JBD2_FLAG_SAME_UUID JBD2_FLAG_LAST_TAG ... Block 7: Inode Inode: 8257802 Mode: 0640 Generation: 57157641 (0x3682809) FS Generation: 2839773110 (0xa9437fb6) CRC32: 00000000 ECC: 0000 Type: Regular Attr: 0x0 Flags: Valid Dynamic Features: (0x1) InlineData User: 0 (root) Group: 0 (root) Size: 7 Links: 1 Clusters: 0 ctime: 0x5de5d870 0x11104c61 -- Tue Dec 3 11:37:20.286280801 2019 atime: 0x5de5d870 0x113181a1 -- Tue Dec 3 11:37:20.288457121 2019 mtime: 0x5de5d870 0x11104c61 -- Tue Dec 3 11:37:20.286280801 2019 dtime: 0x0 -- Thu Jan 1 08:00:00 1970 ... Block 9: Journal Commit Block Seq: 15 Type: 2 (JBD2_COMMIT_BLOCK)
The following is journal recovery log when recovering the upper jbd2 journal when mount again.
syslog: ocfs2: File system on device (252,1) was not unmounted cleanly, recovering it. fs/jbd2/recovery.c:(do_one_pass, 449): Starting recovery pass 0 fs/jbd2/recovery.c:(do_one_pass, 449): Starting recovery pass 1 fs/jbd2/recovery.c:(do_one_pass, 449): Starting recovery pass 2 fs/jbd2/recovery.c:(jbd2_journal_recover, 278): JBD2: recovery, exit status 0, recovered transactions 13 to 13
Due to first commit seq 13 recorded in journal super is not consistent with the value recorded in block 1(seq is 14), journal recovery will be terminated before seq 15 even though it is an unbroken commit, inode 8257802 is a new file and it will be lost.
Link: http://lkml.kernel.org/r/20191217020140.2197-1-li.kai4@h3c.com Signed-off-by: Kai Li li.kai4@h3c.com Reviewed-by: Joseph Qi joseph.qi@linux.alibaba.com Reviewed-by: Changwei Ge gechangwei@live.cn Cc: Mark Fasheh mark@fasheh.com Cc: Joel Becker jlbec@evilplan.org Cc: Junxiao Bi junxiao.bi@oracle.com Cc: Gang He ghe@suse.com Cc: Jun Piao piaojun@huawei.com Signed-off-by: Andrew Morton akpm@linux-foundation.org Signed-off-by: Linus Torvalds torvalds@linux-foundation.org Signed-off-by: Sasha Levin sashal@kernel.org --- fs/ocfs2/journal.c | 8 ++++++++ 1 file changed, 8 insertions(+)
diff --git a/fs/ocfs2/journal.c b/fs/ocfs2/journal.c index fc1f209e5db0..c27d8ef47392 100644 --- a/fs/ocfs2/journal.c +++ b/fs/ocfs2/journal.c @@ -1080,6 +1080,14 @@ int ocfs2_journal_load(struct ocfs2_journal *journal, int local, int replayed)
ocfs2_clear_journal_error(osb->sb, journal->j_journal, osb->slot_num);
+ if (replayed) { + jbd2_journal_lock_updates(journal->j_journal); + status = jbd2_journal_flush(journal->j_journal); + jbd2_journal_unlock_updates(journal->j_journal); + if (status < 0) + mlog_errno(status); + } + status = ocfs2_journal_toggle_dirty(osb, 1, replayed); if (status < 0) { mlog_errno(status);
linux-stable-mirror@lists.linaro.org
-
Sasha Levin