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author | Linus Torvalds <torvalds@linux-foundation.org> | 2024-03-21 23:21:31 +0300 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2024-03-21 23:21:31 +0300 |
commit | bb41fe35dce709ea8f91d313c558ee6c68f705ef (patch) | |
tree | 4a88617cf410763964342b01240e3e6f8c8a64ef /drivers/hwtracing/coresight/coresight-tmc-etf.c | |
parent | 0a59b3f42e5703a89dd6ddf5bc818a4cff975302 (diff) | |
parent | 367b3560e10bbae3660d8ba4d0a7cc92170d8398 (diff) | |
download | linux-bb41fe35dce709ea8f91d313c558ee6c68f705ef.tar.xz |
Merge tag 'char-misc-6.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
Pull char/misc and other driver subsystem updates from Greg KH:
"Here is the big set of char/misc and a number of other driver
subsystem updates for 6.9-rc1. Included in here are:
- IIO driver updates, loads of new ones and evolution of existing ones
- coresight driver updates
- const cleanups for many driver subsystems
- speakup driver additions
- platform remove callback void cleanups
- mei driver updates
- mhi driver updates
- cdx driver updates for MSI interrupt handling
- nvmem driver updates
- other smaller driver updates and cleanups, full details in the
shortlog
All of these have been in linux-next for a long time with no reported
issue, other than a build warning for the speakup driver"
The build warning hits clang and is a gcc (and C23) extension, and is
fixed up in the merge.
Link: https://lore.kernel.org/all/20240321134831.GA2762840@dev-arch.thelio-3990X/
* tag 'char-misc-6.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (279 commits)
binder: remove redundant variable page_addr
uio_dmem_genirq: UIO_MEM_DMA_COHERENT conversion
uio_pruss: UIO_MEM_DMA_COHERENT conversion
cnic,bnx2,bnx2x: use UIO_MEM_DMA_COHERENT
uio: introduce UIO_MEM_DMA_COHERENT type
cdx: add MSI support for CDX bus
pps: use cflags-y instead of EXTRA_CFLAGS
speakup: Add /dev/synthu device
speakup: Fix 8bit characters from direct synth
parport: sunbpp: Convert to platform remove callback returning void
parport: amiga: Convert to platform remove callback returning void
char: xillybus: Convert to platform remove callback returning void
vmw_balloon: change maintainership
MAINTAINERS: change the maintainer for hpilo driver
char: xilinx_hwicap: Fix NULL vs IS_ERR() bug
hpet: remove hpets::hp_clocksource
platform: goldfish: move the separate 'default' propery for CONFIG_GOLDFISH
char: xilinx_hwicap: drop casting to void in dev_set_drvdata
greybus: move is_gb_* functions out of greybus.h
greybus: Remove usage of the deprecated ida_simple_xx() API
...
Diffstat (limited to 'drivers/hwtracing/coresight/coresight-tmc-etf.c')
-rw-r--r-- | drivers/hwtracing/coresight/coresight-tmc-etf.c | 46 |
1 files changed, 24 insertions, 22 deletions
diff --git a/drivers/hwtracing/coresight/coresight-tmc-etf.c b/drivers/hwtracing/coresight/coresight-tmc-etf.c index 7406b65e2cdd..d4f641cd9de6 100644 --- a/drivers/hwtracing/coresight/coresight-tmc-etf.c +++ b/drivers/hwtracing/coresight/coresight-tmc-etf.c @@ -89,7 +89,7 @@ static void __tmc_etb_disable_hw(struct tmc_drvdata *drvdata) * When operating in sysFS mode the content of the buffer needs to be * read before the TMC is disabled. */ - if (drvdata->mode == CS_MODE_SYSFS) + if (coresight_get_mode(drvdata->csdev) == CS_MODE_SYSFS) tmc_etb_dump_hw(drvdata); tmc_disable_hw(drvdata); @@ -205,8 +205,8 @@ static int tmc_enable_etf_sink_sysfs(struct coresight_device *csdev) * sink is already enabled no memory is needed and the HW need not be * touched. */ - if (drvdata->mode == CS_MODE_SYSFS) { - atomic_inc(&csdev->refcnt); + if (coresight_get_mode(csdev) == CS_MODE_SYSFS) { + csdev->refcnt++; goto out; } @@ -228,8 +228,8 @@ static int tmc_enable_etf_sink_sysfs(struct coresight_device *csdev) ret = tmc_etb_enable_hw(drvdata); if (!ret) { - drvdata->mode = CS_MODE_SYSFS; - atomic_inc(&csdev->refcnt); + coresight_set_mode(csdev, CS_MODE_SYSFS); + csdev->refcnt++; } else { /* Free up the buffer if we failed to enable */ used = false; @@ -262,7 +262,7 @@ static int tmc_enable_etf_sink_perf(struct coresight_device *csdev, void *data) * No need to continue if the ETB/ETF is already operated * from sysFS. */ - if (drvdata->mode == CS_MODE_SYSFS) { + if (coresight_get_mode(csdev) == CS_MODE_SYSFS) { ret = -EBUSY; break; } @@ -284,7 +284,7 @@ static int tmc_enable_etf_sink_perf(struct coresight_device *csdev, void *data) * use for this session. */ if (drvdata->pid == pid) { - atomic_inc(&csdev->refcnt); + csdev->refcnt++; break; } @@ -292,8 +292,8 @@ static int tmc_enable_etf_sink_perf(struct coresight_device *csdev, void *data) if (!ret) { /* Associate with monitored process. */ drvdata->pid = pid; - drvdata->mode = CS_MODE_PERF; - atomic_inc(&csdev->refcnt); + coresight_set_mode(csdev, CS_MODE_PERF); + csdev->refcnt++; } } while (0); spin_unlock_irqrestore(&drvdata->spinlock, flags); @@ -338,17 +338,18 @@ static int tmc_disable_etf_sink(struct coresight_device *csdev) return -EBUSY; } - if (atomic_dec_return(&csdev->refcnt)) { + csdev->refcnt--; + if (csdev->refcnt) { spin_unlock_irqrestore(&drvdata->spinlock, flags); return -EBUSY; } /* Complain if we (somehow) got out of sync */ - WARN_ON_ONCE(drvdata->mode == CS_MODE_DISABLED); + WARN_ON_ONCE(coresight_get_mode(csdev) == CS_MODE_DISABLED); tmc_etb_disable_hw(drvdata); /* Dissociate from monitored process. */ drvdata->pid = -1; - drvdata->mode = CS_MODE_DISABLED; + coresight_set_mode(csdev, CS_MODE_DISABLED); spin_unlock_irqrestore(&drvdata->spinlock, flags); @@ -371,15 +372,15 @@ static int tmc_enable_etf_link(struct coresight_device *csdev, return -EBUSY; } - if (atomic_read(&csdev->refcnt) == 0) { + if (csdev->refcnt == 0) { ret = tmc_etf_enable_hw(drvdata); if (!ret) { - drvdata->mode = CS_MODE_SYSFS; + coresight_set_mode(csdev, CS_MODE_SYSFS); first_enable = true; } } if (!ret) - atomic_inc(&csdev->refcnt); + csdev->refcnt++; spin_unlock_irqrestore(&drvdata->spinlock, flags); if (first_enable) @@ -401,9 +402,10 @@ static void tmc_disable_etf_link(struct coresight_device *csdev, return; } - if (atomic_dec_return(&csdev->refcnt) == 0) { + csdev->refcnt--; + if (csdev->refcnt == 0) { tmc_etf_disable_hw(drvdata); - drvdata->mode = CS_MODE_DISABLED; + coresight_set_mode(csdev, CS_MODE_DISABLED); last_disable = true; } spin_unlock_irqrestore(&drvdata->spinlock, flags); @@ -483,13 +485,13 @@ static unsigned long tmc_update_etf_buffer(struct coresight_device *csdev, return 0; /* This shouldn't happen */ - if (WARN_ON_ONCE(drvdata->mode != CS_MODE_PERF)) + if (WARN_ON_ONCE(coresight_get_mode(csdev) != CS_MODE_PERF)) return 0; spin_lock_irqsave(&drvdata->spinlock, flags); /* Don't do anything if another tracer is using this sink */ - if (atomic_read(&csdev->refcnt) != 1) + if (csdev->refcnt != 1) goto out; CS_UNLOCK(drvdata->base); @@ -629,7 +631,7 @@ int tmc_read_prepare_etb(struct tmc_drvdata *drvdata) } /* Don't interfere if operated from Perf */ - if (drvdata->mode == CS_MODE_PERF) { + if (coresight_get_mode(drvdata->csdev) == CS_MODE_PERF) { ret = -EINVAL; goto out; } @@ -641,7 +643,7 @@ int tmc_read_prepare_etb(struct tmc_drvdata *drvdata) } /* Disable the TMC if need be */ - if (drvdata->mode == CS_MODE_SYSFS) { + if (coresight_get_mode(drvdata->csdev) == CS_MODE_SYSFS) { /* There is no point in reading a TMC in HW FIFO mode */ mode = readl_relaxed(drvdata->base + TMC_MODE); if (mode != TMC_MODE_CIRCULAR_BUFFER) { @@ -673,7 +675,7 @@ int tmc_read_unprepare_etb(struct tmc_drvdata *drvdata) spin_lock_irqsave(&drvdata->spinlock, flags); /* Re-enable the TMC if need be */ - if (drvdata->mode == CS_MODE_SYSFS) { + if (coresight_get_mode(drvdata->csdev) == CS_MODE_SYSFS) { /* There is no point in reading a TMC in HW FIFO mode */ mode = readl_relaxed(drvdata->base + TMC_MODE); if (mode != TMC_MODE_CIRCULAR_BUFFER) { |