linaro-kernel

linaro-kernel@lists.linaro.org

10094 discussions

by Mark Brown

Another round of cosmetic updates here, this should address everything from the last round. arm64: topology: Implement basic CPU topology support arm64: topology: Add support for topology DT bindings arm64: topology: Tell the scheduler about the relative arm64: topology: Provide relative power numbers for cores

11 years, 4 months

[PATCH V2] tty: Fallback to use dynamic major number

by Tushar Behera

In a multi-platform scenario, the hard-coded major/minor numbers in serial drivers may conflict with each other. A typical scenario is observed with amba-pl011 and samsung-uart drivers, both of these drivers use same set of major/minor numbers. If both of these drivers are enabled, probe of samsung-uart driver fails because the desired node is busy. The issue is fixed by adding a fallback in driver core, so that we can use dynamic major number in case device node allocation fails for hard-coded major/minor number. Signed-off-by: Tushar Behera <tushar.behera(a)linaro.org> --- Initial approach to fix this problem was by forcing samsung-uart driver to use dynamic major number, but it was rejected [1] because of possible user-space breakage. Current approach falls back to dynamic major number as a fallback in case of failure. [1] https://lkml.org/lkml/2013/12/27/2 Can I get an Acked-by/Reviewed-by before I send this to lkml? Changes for V2: * Added warning message in case major number is getting orverriden drivers/tty/tty_io.c | 21 ++++++++++++++++++--- 1 file changed, 18 insertions(+), 3 deletions(-) diff --git a/drivers/tty/tty_io.c b/drivers/tty/tty_io.c index c74a00a..ff4aada 100644 --- a/drivers/tty/tty_io.c +++ b/drivers/tty/tty_io.c @@ -3341,6 +3341,24 @@ int tty_register_driver(struct tty_driver *driver) dev_t dev; struct device *d; + if (driver->major) { + dev = MKDEV(driver->major, driver->minor_start); + error = register_chrdev_region(dev, driver->num, driver->name); + /* In case of error, fall back to dynamic allocation */ + if (error < 0) { + printk(KERN_WARNING + "Default device node (%d:%d) for %s is busy, " + "using dynamic major number\n", + driver->major, driver->minor_start, + driver->name); + driver->major = 0; + } + } + + /* + * Don't replace the following check with an else to above if statement, + * as it may also be called as a fallback. + */ if (!driver->major) { error = alloc_chrdev_region(&dev, driver->minor_start, driver->num, driver->name); @@ -3348,9 +3366,6 @@ int tty_register_driver(struct tty_driver *driver) driver->major = MAJOR(dev); driver->minor_start = MINOR(dev); } - } else { - dev = MKDEV(driver->major, driver->minor_start); - error = register_chrdev_region(dev, driver->num, driver->name); } if (error < 0) goto err; -- 1.7.9.5

11 years, 4 months

arm-soc boot: 31 pass, 1 fail (v3.13-rc5-1169-gfb54a12)

by Kevin's boot bot

Automated DT boot report for various ARM defconfigs. Tree/Branch: arm-soc Git describe: v3.13-rc5-1169-gfb54a12 Failed boot tests (console logs at the end) =========================================== omap4-panda-es: FAIL: multi_v7_defconfig Full Report =========== omap2plus_defconfig ------------------- am335x-boneblack PASS: 0 min 24.9 sec omap3-beagle-xm PASS: 0 min 54.0 sec am335x-bone PASS: 0 min 26.8 sec omap4-panda PASS: 1 min 10.2 sec omap4-panda-es PASS: 1 min 6.6 sec omap3-tobi,3730storm PASS: 0 min 20.9 sec omap3-tobi,3530overo PASS: 0 min 21.8 sec tegra_defconfig --------------- tegra30-beaver PASS: 0 min 17.0 sec imx_v6_v7_defconfig ------------------- imx6dl-wandboard,wand-dual PASS: 0 min 17.0 sec imx6dl-wandboard,wand-solo PASS: 0 min 18.5 sec imx6q-wandboard PASS: 0 min 16.9 sec sunxi_defconfig --------------- sun7i-a20-cubieboard2 PASS: 0 min 12.1 sec mvebu_defconfig --------------- armada-xp-openblocks-ax3-4 PASS: 0 min 22.0 sec armada-370-mirabox PASS: 0 min 20.3 sec exynos_defconfig ---------------- exynos5250-arndale PASS: 0 min 29.9 sec multi_v7_defconfig ------------------ ste-snowball PASS: 1 min 20.4 sec tegra30-beaver PASS: 0 min 23.4 sec am335x-boneblack PASS: 0 min 22.6 sec omap3-beagle-xm PASS: 0 min 44.1 sec sun7i-a20-cubieboard2 PASS: 0 min 13.5 sec armada-370-mirabox PASS: 0 min 21.6 sec omap4-panda PASS: 0 min 52.6 sec omap4-panda-es FAIL: 1 min 48.2 sec armada-xp-openblocks-ax3-4 PASS: 0 min 23.8 sec imx6dl-wandboard,wand-solo PASS: 0 min 17.2 sec am335x-bone PASS: 0 min 24.3 sec imx6q-wandboard PASS: 0 min 16.6 sec omap3-tobi,3730storm PASS: 0 min 24.8 sec imx6dl-wandboard,wand-dual PASS: 0 min 17.6 sec omap3-tobi,3530overo PASS: 0 min 20.8 sec u8500_defconfig --------------- ste-snowball PASS: 0 min 28.3 sec sama5_defconfig --------------- sama5d35ek PASS: 2 min 0.7 sec Console logs for failures ========================= multi_v7_defconfig ------------------ omap4-panda-es: FAIL: last 24 lines of boot log: ------------------------------------------------ [ 1.624114] Registering SWP/SWPB emulation handler [ 1.629974] vwl1271: 1800 mV [ 1.636840] Skipping twl internal clock init and using bootloader value (unknown osc rate) [ 1.646392] twl 0-0048: PIH (irq 39) nested IRQs [ 1.652648] twl_rtc rtc.11: Enabling TWL-RTC [ 1.659515] twl_rtc rtc.11: rtc core: registered rtc.11 as rtc0 [ 1.666320] VAUX1_6030: 1000 <--> 3000 mV at 2800 mV [ 1.672332] VAUX2_6030: 1200 <--> 2800 mV at 1800 mV [ 1.678344] VAUX3_6030: 1000 <--> 3000 mV at 1200 mV [ 1.684326] VMMC: 1200 <--> 3000 mV at 3000 mV [ 1.689788] VPP: 1800 <--> 2500 mV at 1900 mV [ 1.695098] VUSIM: 1200 <--> 2900 mV at 1800 mV [ 1.700134] VDAC: 1800 mV [ 1.700134] VANA: 2100 mV [ 1.707153] VCXIO: 1800 mV [ 1.707153] VUSB: 3300 mV [ 1.713928] V1V8: 1800 mV [ 1.717407] V2V1: 2100 mV [ 1.724609] omap_i2c 48070000.i2c: bus 0 rev0.11 at 400 kHz [ 1.816497] usb 1-1: new high-speed USB device number 2 using ehci-omap ~$off # PYBOOT: Exception: kernel: ERROR: failed to boot: <class 'pexpect.TIMEOUT'> # PYBOOT: Time: 108.16 seconds. # PYBOOT: Result: FAIL

11 years, 4 months

arm-soc boot: 31 pass, 1 fail (v3.13-rc5-1125-g7d464b9)

by Kevin's boot bot

Automated DT boot report for various ARM defconfigs. Tree/Branch: arm-soc Git describe: v3.13-rc5-1125-g7d464b9 Failed boot tests (console logs at the end) =========================================== omap4-panda-es: FAIL: multi_v7_defconfig Full Report =========== omap2plus_defconfig ------------------- am335x-boneblack PASS: 0 min 24.9 sec omap3-beagle-xm PASS: 0 min 54.6 sec am335x-bone PASS: 0 min 26.6 sec omap4-panda PASS: 1 min 9.7 sec omap4-panda-es PASS: 1 min 8.6 sec omap3-tobi,3730storm PASS: 0 min 24.0 sec omap3-tobi,3530overo PASS: 0 min 21.7 sec tegra_defconfig --------------- tegra30-beaver PASS: 0 min 20.2 sec imx_v6_v7_defconfig ------------------- imx6dl-wandboard,wand-dual PASS: 0 min 18.2 sec imx6dl-wandboard,wand-solo PASS: 0 min 18.4 sec imx6q-wandboard PASS: 0 min 15.7 sec sunxi_defconfig --------------- sun7i-a20-cubieboard2 PASS: 0 min 12.1 sec mvebu_defconfig --------------- armada-xp-openblocks-ax3-4 PASS: 0 min 21.9 sec armada-370-mirabox PASS: 0 min 20.3 sec exynos_defconfig ---------------- exynos5250-arndale PASS: 0 min 28.9 sec multi_v7_defconfig ------------------ ste-snowball PASS: 1 min 17.2 sec tegra30-beaver PASS: 0 min 19.0 sec am335x-boneblack PASS: 0 min 22.7 sec omap3-beagle-xm PASS: 0 min 49.2 sec sun7i-a20-cubieboard2 PASS: 0 min 13.5 sec armada-370-mirabox PASS: 0 min 21.4 sec omap4-panda PASS: 0 min 54.0 sec omap4-panda-es FAIL: 1 min 47.8 sec armada-xp-openblocks-ax3-4 PASS: 0 min 23.8 sec imx6dl-wandboard,wand-solo PASS: 0 min 17.2 sec am335x-bone PASS: 0 min 24.3 sec imx6q-wandboard PASS: 0 min 16.7 sec omap3-tobi,3730storm PASS: 0 min 23.1 sec imx6dl-wandboard,wand-dual PASS: 0 min 17.6 sec omap3-tobi,3530overo PASS: 0 min 20.6 sec u8500_defconfig --------------- ste-snowball PASS: 0 min 28.6 sec sama5_defconfig --------------- sama5d35ek PASS: 2 min 5.7 sec Console logs for failures ========================= multi_v7_defconfig ------------------ omap4-panda-es: FAIL: last 24 lines of boot log: ------------------------------------------------ [ 1.612701] Power Management for TI OMAP4. [ 1.617004] OMAP4 PM: u-boot >= v2012.07 is required for full PM support [ 1.624114] Registering SWP/SWPB emulation handler [ 1.630279] vwl1271: 1800 mV [ 1.636962] Skipping twl internal clock init and using bootloader value (unknown osc rate) [ 1.646240] twl 0-0048: PIH (irq 39) nested IRQs [ 1.652557] twl_rtc rtc.11: Enabling TWL-RTC [ 1.659393] twl_rtc rtc.11: rtc core: registered rtc.11 as rtc0 [ 1.666259] VAUX1_6030: 1000 <--> 3000 mV at 2800 mV [ 1.672302] VAUX2_6030: 1200 <--> 2800 mV at 1800 mV [ 1.678283] VAUX3_6030: 1000 <--> 3000 mV at 1200 mV [ 1.684265] VMMC: 1200 <--> 3000 mV at 3000 mV [ 1.689819] VPP: 1800 <--> 2500 mV at 1900 mV [ 1.695129] VUSIM: 1200 <--> 2900 mV at 1800 mV [ 1.700164] VDAC: 1800 mV [ 1.700164] VANA: 2100 mV [ 1.707153] VCXIO: 1800 mV [ 1.710449] VUSB: 3300 mV [ 1.713958] V1V8: 1800 mV [ 1.717407] V2V1: 2100 mV ~$off # PYBOOT: Exception: kernel: ERROR: failed to boot: <class 'pexpect.TIMEOUT'> # PYBOOT: Time: 107.78 seconds. # PYBOOT: Result: FAIL

11 years, 4 months

arm-soc boot: 31 pass, 1 fail (v3.13-rc5-1111-gc954e78)

by Kevin's boot bot

Automated DT boot report for various ARM defconfigs. Tree/Branch: arm-soc Git describe: v3.13-rc5-1111-gc954e78 Failed boot tests (console logs at the end) =========================================== omap4-panda-es: FAIL: multi_v7_defconfig Full Report =========== omap2plus_defconfig ------------------- am335x-boneblack PASS: 0 min 24.8 sec omap3-beagle-xm PASS: 0 min 59.8 sec am335x-bone PASS: 0 min 26.6 sec omap4-panda PASS: 1 min 10.3 sec omap4-panda-es PASS: 1 min 9.5 sec omap3-tobi,3730storm PASS: 0 min 21.1 sec omap3-tobi,3530overo PASS: 0 min 21.6 sec tegra_defconfig --------------- tegra30-beaver PASS: 0 min 17.0 sec imx_v6_v7_defconfig ------------------- imx6dl-wandboard,wand-dual PASS: 0 min 17.0 sec imx6dl-wandboard,wand-solo PASS: 0 min 18.4 sec imx6q-wandboard PASS: 0 min 16.8 sec sunxi_defconfig --------------- sun7i-a20-cubieboard2 PASS: 0 min 12.1 sec mvebu_defconfig --------------- armada-xp-openblocks-ax3-4 PASS: 0 min 22.0 sec armada-370-mirabox PASS: 0 min 20.2 sec exynos_defconfig ---------------- exynos5250-arndale PASS: 0 min 28.7 sec multi_v7_defconfig ------------------ ste-snowball PASS: 1 min 16.8 sec tegra30-beaver PASS: 0 min 24.1 sec am335x-boneblack PASS: 0 min 22.6 sec omap3-beagle-xm PASS: 0 min 47.6 sec sun7i-a20-cubieboard2 PASS: 0 min 13.4 sec armada-370-mirabox PASS: 0 min 21.4 sec omap4-panda PASS: 0 min 51.8 sec omap4-panda-es FAIL: 1 min 47.8 sec armada-xp-openblocks-ax3-4 PASS: 0 min 24.0 sec imx6dl-wandboard,wand-solo PASS: 0 min 17.3 sec am335x-bone PASS: 0 min 24.3 sec imx6q-wandboard PASS: 0 min 16.3 sec omap3-tobi,3730storm PASS: 0 min 22.8 sec imx6dl-wandboard,wand-dual PASS: 0 min 17.5 sec omap3-tobi,3530overo PASS: 0 min 20.7 sec u8500_defconfig --------------- ste-snowball PASS: 0 min 31.4 sec sama5_defconfig --------------- sama5d35ek PASS: 0 min 17.4 sec Console logs for failures ========================= multi_v7_defconfig ------------------ omap4-panda-es: FAIL: last 24 lines of boot log: ------------------------------------------------ [ 1.624053] Registering SWP/SWPB emulation handler [ 1.629943] vwl1271: 1800 mV [ 1.636962] Skipping twl internal clock init and using bootloader value (unknown osc rate) [ 1.646331] twl 0-0048: PIH (irq 39) nested IRQs [ 1.652618] twl_rtc rtc.11: Enabling TWL-RTC [ 1.659362] twl_rtc rtc.11: rtc core: registered rtc.11 as rtc0 [ 1.666229] VAUX1_6030: 1000 <--> 3000 mV at 2800 mV [ 1.672271] VAUX2_6030: 1200 <--> 2800 mV at 1800 mV [ 1.678283] VAUX3_6030: 1000 <--> 3000 mV at 1200 mV [ 1.684265] VMMC: 1200 <--> 3000 mV at 3000 mV [ 1.689727] VPP: 1800 <--> 2500 mV at 1900 mV [ 1.695037] VUSIM: 1200 <--> 2900 mV at 1800 mV [ 1.700042] VDAC: 1800 mV [ 1.703613] VANA: 2100 mV [ 1.707061] VCXIO: 1800 mV [ 1.710113] VUSB: 3300 mV [ 1.713836] V1V8: 1800 mV [ 1.717315] V2V1: 2100 mV [ 1.724548] omap_i2c 48070000.i2c: bus 0 rev0.11 at 400 kHz [ 1.816375] usb 1-1: new high-speed USB device number 2 using ehci-omap ~$off # PYBOOT: Exception: kernel: ERROR: failed to boot: <class 'pexpect.TIMEOUT'> # PYBOOT: Time: 107.76 seconds. # PYBOOT: Result: FAIL

11 years, 4 months

[PATCH 1/2] sched/nohz: add debugfs control over sched_tick_max_deferment

by Kevin Hilman

Allow debugfs override of sched_tick_max_deferment in order to ease finding/fixing the remaining issues with full nohz. The value to be written is in jiffies, and -1 means the max deferment is disabled (scheduler_tick_max_deferment() returns KTIME_MAX.) Cc: Frederic Weisbecker <fweisbec(a)gmail.com> Signed-off-by: Kevin Hilman <khilman(a)linaro.org> --- kernel/sched/core.c | 16 +++++++++++++++- 1 file changed, 15 insertions(+), 1 deletion(-) diff --git a/kernel/sched/core.c b/kernel/sched/core.c index 5ac63c9a995a..4b1fe3e69fe4 100644 --- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -2175,6 +2175,8 @@ void scheduler_tick(void) } #ifdef CONFIG_NO_HZ_FULL +static u32 sched_tick_max_deferment = HZ; + /** * scheduler_tick_max_deferment * @@ -2193,13 +2195,25 @@ u64 scheduler_tick_max_deferment(void) struct rq *rq = this_rq(); unsigned long next, now = ACCESS_ONCE(jiffies); - next = rq->last_sched_tick + HZ; + if (sched_tick_max_deferment == -1) + return KTIME_MAX; + + next = rq->last_sched_tick + sched_tick_max_deferment; if (time_before_eq(next, now)) return 0; return jiffies_to_usecs(next - now) * NSEC_PER_USEC; } + +static __init int sched_nohz_full_init_debug(void) +{ + debugfs_create_u32("sched_tick_max_deferment", 0644, NULL, + &sched_tick_max_deferment); + + return 0; +} +late_initcall(sched_nohz_full_init_debug); #endif notrace unsigned long get_parent_ip(unsigned long addr) -- 1.8.3

11 years, 4 months

[PATCH v10 0/4] arm64 topology

by Mark Brown

Another round of minor tweaks - Remove some problematic and controversial prints - Pass cluster_id around as a pointer - Move slab.h further back in the series arm64: topology: Implement basic CPU topology support arm64: topology: Add support for topology DT bindings arm64: topology: Tell the scheduler about the relative arm64: topology: Provide relative power numbers for cores

11 years, 4 months

arm-soc boot: 30 pass, 2 fail (v3.13-rc5-1101-g475a405)

by Kevin's boot bot

Automated DT boot report for various ARM defconfigs. Tree/Branch: arm-soc Git describe: v3.13-rc5-1101-g475a405 Failed boot tests (console logs at the end) =========================================== omap4-panda-es: FAIL: multi_v7_defconfig sama5d35ek: FAIL: sama5_defconfig Full Report =========== omap2plus_defconfig ------------------- am335x-boneblack PASS: 0 min 24.9 sec omap3-beagle-xm PASS: 1 min 0.5 sec am335x-bone PASS: 0 min 26.6 sec omap4-panda PASS: 1 min 7.0 sec omap4-panda-es PASS: 1 min 8.0 sec omap3-tobi,3730storm PASS: 0 min 21.3 sec omap3-tobi,3530overo PASS: 0 min 22.0 sec tegra_defconfig --------------- tegra30-beaver PASS: 0 min 21.5 sec imx_v6_v7_defconfig ------------------- imx6dl-wandboard,wand-dual PASS: 0 min 16.9 sec imx6dl-wandboard,wand-solo PASS: 0 min 19.4 sec imx6q-wandboard PASS: 0 min 15.5 sec sunxi_defconfig --------------- sun7i-a20-cubieboard2 PASS: 0 min 12.1 sec mvebu_defconfig --------------- armada-xp-openblocks-ax3-4 PASS: 0 min 22.2 sec armada-370-mirabox PASS: 0 min 20.2 sec exynos_defconfig ---------------- exynos5250-arndale PASS: 0 min 28.8 sec multi_v7_defconfig ------------------ ste-snowball PASS: 1 min 17.5 sec tegra30-beaver PASS: 0 min 19.2 sec am335x-boneblack PASS: 0 min 22.6 sec omap3-beagle-xm PASS: 0 min 47.1 sec sun7i-a20-cubieboard2 PASS: 0 min 13.6 sec armada-370-mirabox PASS: 0 min 21.5 sec omap4-panda PASS: 0 min 54.2 sec omap4-panda-es FAIL: 1 min 46.0 sec armada-xp-openblocks-ax3-4 PASS: 0 min 23.9 sec imx6dl-wandboard,wand-solo PASS: 0 min 17.2 sec am335x-bone PASS: 0 min 24.3 sec imx6q-wandboard PASS: 0 min 17.8 sec omap3-tobi,3730storm PASS: 0 min 22.9 sec imx6dl-wandboard,wand-dual PASS: 0 min 17.4 sec omap3-tobi,3530overo PASS: 0 min 20.7 sec u8500_defconfig --------------- ste-snowball PASS: 0 min 31.2 sec sama5_defconfig --------------- sama5d35ek FAIL: 1 min 52.8 sec Console logs for failures ========================= multi_v7_defconfig ------------------ omap4-panda-es: FAIL: last 24 lines of boot log: ------------------------------------------------ [ 1.616851] OMAP4 PM: u-boot >= v2012.07 is required for full PM support [ 1.623992] Registering SWP/SWPB emulation handler [ 1.629852] vwl1271: 1800 mV [ 1.637054] Skipping twl internal clock init and using bootloader value (unknown osc rate) [ 1.646270] twl 0-0048: PIH (irq 39) nested IRQs [ 1.652526] twl_rtc rtc.11: Enabling TWL-RTC [ 1.659301] twl_rtc rtc.11: rtc core: registered rtc.11 as rtc0 [ 1.666168] VAUX1_6030: 1000 <--> 3000 mV at 2800 mV [ 1.672180] VAUX2_6030: 1200 <--> 2800 mV at 1800 mV [ 1.678192] VAUX3_6030: 1000 <--> 3000 mV at 1200 mV [ 1.684173] VMMC: 1200 <--> 3000 mV at 3000 mV [ 1.689666] VPP: 1800 <--> 2500 mV at 1900 mV [ 1.694976] VUSIM: 1200 <--> 2900 mV at 1800 mV [ 1.700012] VDAC: 1800 mV [ 1.700012] VANA: 2100 mV [ 1.707000] VCXIO: 1800 mV [ 1.710296] VUSB: 3300 mV [ 1.713806] V1V8: 1800 mV [ 1.717315] V2V1: 2100 mV [ 1.724365] omap_i2c 48070000.i2c: bus 0 rev0.11 at 400 kHz ~$off # PYBOOT: Exception: kernel: ERROR: failed to boot: <class 'pexpect.TIMEOUT'> # PYBOOT: Time: 106.03 seconds. # PYBOOT: Result: FAIL sama5_defconfig --------------- sama5d35ek: FAIL: last 24 lines of boot log: -------------------------------------------- U-Boot> tftp 0x22000000 tmp/sama5-q0KVff/tmp5xSpAZ-uImage tftp 0x22000000 tmp/sama5-q0KVff/tmp5xSpAZ-uImage macb0: PHY present at 0 macb0: link up, 100Mbps full-duplex (lpa: 0x45e1) Using macb0 device TFTP from server 192.168.1.2; our IP address is 192.168.1.182 Filename 'tmp/sama5-q0KVff/tmp5xSpAZ-uImage'. Load address: 0x22000000 Loading: *#T T #T #T #T ## Abort U-Boot> tftp 0x22000000 tmp/sama5-q0KVff/tmp5xSpAZ-uImage tftp 0x22000000 tmp/sama5-q0KVff/tmp5xSpAZ-uImage macb0: PHY present at 0 macb0: link up, 100Mbps full-duplex (lpa: 0x45e1) Using macb0 device TFTP from server 192.168.1.2; our IP address is 192.168.1.182 Filename 'tmp/sama5-q0KVff/tmp5xSpAZ-uImage'. Load address: 0x22000000 Loading: *########T ############T ###########################T ################## ################################T ###############################T ## #############~$off # PYBOOT: Exception: ERROR: Timeout loading tmp/sama5-q0KVff/tmp5xSpAZ-uImage. Giving up. # PYBOOT: Time: 112.77 seconds. # PYBOOT: Result: FAIL

11 years, 4 months

[PATCH v6 0/6] Hardware Reduced Mode Cleanup for ACPI

by al.stone＠linaro.org

From: Al Stone <al.stone(a)linaro.org> This series of patches starts with Hanjun's patch to create a kernel config item for CONFIG_ACPI_REDUCED_HARDWARE [0]. Building on that, I then reviewed all of the code that touched any of several fields in the FADT that the OSPM is supposed to ignore when ACPI is in Hardware Reduced mode [1]. Any time there was a use of one of the fields to be ignored, I evaluated whether or not the code was implementing Hardware Reduced mode correctly. Similarly, for each the flags in the FADT flags field that are to be ignored in Hardware Reduced mode, the kernel code was again scanned for proper usage. The remainder of the patches are to fix all of the situations I could find where the kernel would not behave correctly in this ACPI mode. These seem to work just fine on the RTSM model for ARMv7, both with and without ACPI enabled, and with and without ACPI_REDUCED_HARDWARE enabled; similarly for the FVP model for ARMv8. The patches for ACPI on ARM hardware have been submitted elsewhere but they presume that reduced HW mode is functioning correctly. In the meantime, there's no way I can think of to test all possible scenarios so feedback would be greatly appreciated. [0] List at https://wiki.linaro.org/LEG/Engineering/Kernel/ACPI/AcpiReducedHw#Section_5… [1] Please see the ACPI Specification v5.0 for details on Hardware Reduced mode (sections 3.11.1, 4.1, 5.2.9, at a minimum). Changes for v6: -- Allow selection of CONFIG_ACPI_REDUCED_HARDWARE_ONLY to be more architecture-independent, but make it harder to accidentally enable. -- Make sure that ACPI ECs do not use the ACPI global lock when in hardware reduced mode (I had missed this case in earlier reviews of the kernel tree). Changes for v5: -- Clarify that if the kernel config option to build ACPI hardware reduced mode is used, it builds a hardware reduced *only* kernel (i.e., full legacy ACPI mode will no longer work). Changes for v4: -- Given the current state of ACPICA, disable CONFIG_ACPI_REDUCED_HARDWARE for use on anything other than ARM. -- Replaced #ifdefs with run-time checking for hardware reduced mode, whenever possible Changes for v3: -- Modified enabling ACPI_REDUCED_HARDWARE in ACPICA when using kernel config item CONFIG_ACPI_REDUCED_HARDWARE; now consistent with ACPICA code base where needed -- Enable X86 for CONFIG_ACPI_REDUCED_HARDWARE -- Minimize bus master reload patching -- Remove unneeded patch for dmi_check_system() (was 4/6) -- Correct the patch for removing unneeded map/unmap of FADT fields Changes for v2: -- Remove patch that was outside of reduced HW mode changes -- Simplify CONFIG_ACPI_REDUCED_HARDWARE in Kconfig -- Simplify use of CONFIG_ACPI_REDUCED_HARDWARE in #ifdefs -- Ensure changelogs are present -- Combine and simplify previous patches 8 & 10 Al Stone (6): ACPI: introduce CONFIG_ACPI_REDUCED_HARDWARE_ONLY to enforce this ACPI mode ACPI: bus master reload not supported in reduced HW mode ACPI: HW reduced mode does not allow use of the FADT sci_interrupt field ACPI: in HW reduced mode, using FADT PM information is not allowed. ACPI: do not map/unmap memory regions for FADT entries in reduced HW mode ACPI: make sure ECs do not use the ACPI global lock drivers/acpi/Kconfig | 12 ++++++++++++ drivers/acpi/bus.c | 30 ++++++++++++++++-------------- drivers/acpi/ec.c | 12 ++++++++++-- drivers/acpi/osl.c | 38 +++++++++++++++++++------------------- drivers/acpi/pci_link.c | 2 ++ drivers/acpi/processor_idle.c | 14 ++++++++++++-- include/acpi/platform/aclinux.h | 6 ++++++ 7 files changed, 77 insertions(+), 37 deletions(-) -- 1.8.4.2

11 years, 4 months

[GIT PULL 00/38] perf/core improvements and fixes

by Arnaldo Carvalho de Melo

From: Arnaldo Carvalho de Melo <acme(a)ghostprotocols.net> Hi Ingo, There are more patchkits outstanding that I have to revisit/retest, but lets get this first batch in to keep pull reqs at a reasonable size. Please consider pulling, - Arnaldo The following changes since commit 1341f3e4c0276aae3de6d902c9202265d89fe438: Merge tag 'perf-core-for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/core (2014-01-12 17:39:47 +0100) are available in the git repository at: git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux tags/perf-core-for-mingo for you to fetch changes up to 26f7f9877234e6b9ed87eff4ca450631bafe0182: perf tools: Remove unused test-volatile-register-var.c (2014-01-13 17:20:05 -0300) ---------------------------------------------------------------- New features: . perf record: Add --initial-delay option (Andi Kleen) . Column colouring improvements in 'diff' (Ramkumar Ramachandra) Fixes: . Don't show counter information when workload fails (Arnaldo Carvalho de Melo) . Fixup leak on error path in parse events test. (Arnaldo Carvalho de Melo) . Fix --delay option in 'stat' man page (Andi Kleen) . Use the DWARF unwind info only if loaded (Jean Pihet): Developer stuff: . Improve forked workload error reporting by sending the errno in the signal data queueing integer field, using sigqueue and by doing the signal setup in the evlist methods, removing open coded equivalents in various tools. (Arnaldo Carvalho de Melo) . Do more auto exit cleanup shores in the 'evlist' destructor, so that the tools don't have to all do that sequence. (Arnaldo Carvalho de Melo) . Pack 'struct perf_session_env' and 'struct trace' (Arnaldo Carvalho de Melo) . Include tools/lib/api/ in MANIFEST, fixing detached tarballs (Arnaldo Carvalho de Melo) . Add test for building detached source tarballs (Arnaldo Carvalho de Melo) . Shut up libtracevent plugins make message (Jiri Olsa) . Fix installation tests path setup (Jiri Olsa) . Fix id_hdr_size initialization (Jiri Olsa) . Move some header files from tools/perf/ to tools/include/ to make them available to other tools/ dwelling codebases (Namhyung Kim) . Fix 'probe' build when DWARF support libraries not present (Arnaldo Carvalho de Melo) Refactorings: . Move logic to warn about kptr_restrict'ed kernels to separate function in 'report' (Arnaldo Carvalho de Melo) . Move hist browser selection code to separate function (Arnaldo Carvalho de Melo) . Move histogram entries collapsing to separate function (Arnaldo Carvalho de Melo) . Introduce evlist__for_each() & friends (Arnaldo Carvalho de Melo) . Automate setup of FEATURE_CHECK_(C|LD)FLAGS-all variables (Jiri Olsa) . Move arch setup into seprate Makefile (Jiri Olsa) Trivial stuff: . Remove misplaced __maybe_unused in 'stat' (Arnaldo Carvalho de Melo) . Remove old evsel_list usage in 'record' (Arnaldo Carvalho de Melo) . Comment typo fix (Cody P Schafer) . Remove unused test-volatile-register-var.c (Yann Droneaud) Signed-off-by: Arnaldo Carvalho de Melo <acme(a)redhat.com> ---------------------------------------------------------------- Andi Kleen (2): perf stat: Fix --delay option in man page perf record: Add --initial-delay option Arnaldo Carvalho de Melo (18): perf stat: Don't show counter information when workload fails perf evlist: Send the errno in the signal when workload fails perf evlist: Move the SIGUSR1 error reporting logic to prepare_workload perf record: Remove old evsel_list usage perf evlist: Move destruction of maps to evlist destructor perf evlist: Close fds on destructor perf evlist: Auto unmap on destructor perf tests: Fixup leak on error path in parse events test perf stat: Remove misplaced __maybe_unused perf header: Pack 'struct perf_session_env' perf trace: Pack 'struct trace' perf report: Move logic to warn about kptr_restrict'ed kernels to separate function perf report: Move hist browser selection code to separate function perf report: Move histogram entries collapsing to separate function perf evlist: Introduce evlist__for_each() & friends perf tools: Include tools/lib/api/ in MANIFEST perf tools: Add test for building detached source tarballs perf probe: Fix build when DWARF support libraries not present Cody P Schafer (1): tools perf: Comment typo fix Jean Pihet (1): perf tools: Use the DWARF unwind info only if loaded Jiri Olsa (7): perf tools: Move arch setup into seprate Makefile perf tests: Fix installation tests path setup tools lib traceevent: Replace tabs with spaces for all non-commands statements tools lib traceevent: Shut up plugins make message perf tools: Automate setup of FEATURE_CHECK_(C|LD)FLAGS-all variables perf machine: Fix id_hdr_size initialization perf tools: Make perf_event__synthesize_mmap_events global Namhyung Kim (4): tools include: Move perf's linux/compiler.h to a generic place tools include: Define likely/unlikely in linux/compiler.h tools include: Move perf's bug.h to a generic place tools include: Include <linux/compiler.h> from asm/bug.h Ramkumar Ramachandra (4): perf tools: Generalize percent_color_snprintf() perf diff: Color the Delta column perf diff: Color the Ratio column perf diff: Color the Weighted Diff column Yann Droneaud (1): perf tools: Remove unused test-volatile-register-var.c tools/{perf/util => }/include/asm/bug.h | 9 +- tools/{perf/util => }/include/linux/compiler.h | 12 +- tools/lib/traceevent/Makefile | 59 ++++--- tools/perf/Documentation/perf-record.txt | 4 + tools/perf/Documentation/perf-stat.txt | 2 +- tools/perf/MANIFEST | 4 +- tools/perf/Makefile.perf | 4 +- tools/perf/builtin-annotate.c | 2 +- tools/perf/builtin-diff.c | 98 ++++++++++- tools/perf/builtin-evlist.c | 2 +- tools/perf/builtin-inject.c | 2 +- tools/perf/builtin-kvm.c | 6 +- tools/perf/builtin-record.c | 82 +++++---- tools/perf/builtin-report.c | 192 ++++++++++++--------- tools/perf/builtin-script.c | 5 +- tools/perf/builtin-stat.c | 66 ++++--- tools/perf/builtin-top.c | 14 +- tools/perf/builtin-trace.c | 30 ++-- tools/perf/config/Makefile | 67 ++++--- tools/perf/config/Makefile.arch | 22 +++ .../feature-checks/test-volatile-register-var.c | 6 - tools/perf/perf.h | 1 + tools/perf/tests/code-reading.c | 7 +- tools/perf/tests/evsel-roundtrip-name.c | 2 +- tools/perf/tests/hists_link.c | 4 +- tools/perf/tests/keep-tracking.c | 7 +- tools/perf/tests/make | 40 +++-- tools/perf/tests/mmap-basic.c | 25 ++- tools/perf/tests/open-syscall-tp-fields.c | 16 +- tools/perf/tests/parse-events.c | 10 +- tools/perf/tests/perf-record.c | 21 +-- tools/perf/tests/perf-targz-src-pkg | 21 +++ tools/perf/tests/perf-time-to-tsc.c | 6 - tools/perf/tests/sw-clock.c | 18 +- tools/perf/tests/task-exit.c | 33 ++-- tools/perf/ui/browsers/hists.c | 5 +- tools/perf/ui/gtk/hists.c | 2 +- tools/perf/util/cgroup.c | 4 +- tools/perf/util/color.c | 15 +- tools/perf/util/color.h | 1 + tools/perf/util/event.c | 12 +- tools/perf/util/event.h | 7 + tools/perf/util/evlist.c | 78 +++++---- tools/perf/util/evlist.h | 69 +++++++- tools/perf/util/evsel.c | 3 +- tools/perf/util/header.c | 19 +- tools/perf/util/header.h | 10 +- tools/perf/util/machine.c | 1 + tools/perf/util/parse-events.c | 5 +- tools/perf/util/pmu.c | 2 +- tools/perf/util/probe-event.c | 5 +- tools/perf/util/python.c | 3 +- tools/perf/util/record.c | 6 +- tools/perf/util/session.c | 6 +- tools/perf/util/unwind.c | 8 +- 55 files changed, 724 insertions(+), 436 deletions(-) rename tools/{perf/util => }/include/asm/bug.h (81%) rename tools/{perf/util => }/include/linux/compiler.h (64%) create mode 100644 tools/perf/config/Makefile.arch delete mode 100644 tools/perf/config/feature-checks/test-volatile-register-var.c create mode 100755 tools/perf/tests/perf-targz-src-pkg

11 years, 4 months

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