mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-28 11:18:45 +07:00
6aa7de0591
Please do not apply this to mainline directly, instead please re-run the
coccinelle script shown below and apply its output.
For several reasons, it is desirable to use {READ,WRITE}_ONCE() in
preference to ACCESS_ONCE(), and new code is expected to use one of the
former. So far, there's been no reason to change most existing uses of
ACCESS_ONCE(), as these aren't harmful, and changing them results in
churn.
However, for some features, the read/write distinction is critical to
correct operation. To distinguish these cases, separate read/write
accessors must be used. This patch migrates (most) remaining
ACCESS_ONCE() instances to {READ,WRITE}_ONCE(), using the following
coccinelle script:
----
// Convert trivial ACCESS_ONCE() uses to equivalent READ_ONCE() and
// WRITE_ONCE()
// $ make coccicheck COCCI=/home/mark/once.cocci SPFLAGS="--include-headers" MODE=patch
virtual patch
@ depends on patch @
expression E1, E2;
@@
- ACCESS_ONCE(E1) = E2
+ WRITE_ONCE(E1, E2)
@ depends on patch @
expression E;
@@
- ACCESS_ONCE(E)
+ READ_ONCE(E)
----
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: davem@davemloft.net
Cc: linux-arch@vger.kernel.org
Cc: mpe@ellerman.id.au
Cc: shuah@kernel.org
Cc: snitzer@redhat.com
Cc: thor.thayer@linux.intel.com
Cc: tj@kernel.org
Cc: viro@zeniv.linux.org.uk
Cc: will.deacon@arm.com
Link: http://lkml.kernel.org/r/1508792849-3115-19-git-send-email-paulmck@linux.vnet.ibm.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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|---|---|---|
| .. | ||
| bdc | ||
| amd5536udc_pci.c | ||
| amd5536udc.h | ||
| at91_udc.c | ||
| at91_udc.h | ||
| atmel_usba_udc.c | ||
| atmel_usba_udc.h | ||
| bcm63xx_udc.c | ||
| core.c | ||
| dummy_hcd.c | ||
| fotg210-udc.c | ||
| fotg210.h | ||
| fsl_mxc_udc.c | ||
| fsl_qe_udc.c | ||
| fsl_qe_udc.h | ||
| fsl_udc_core.c | ||
| fsl_usb2_udc.h | ||
| fusb300_udc.c | ||
| fusb300_udc.h | ||
| goku_udc.c | ||
| goku_udc.h | ||
| gr_udc.c | ||
| gr_udc.h | ||
| Kconfig | ||
| lpc32xx_udc.c | ||
| m66592-udc.c | ||
| m66592-udc.h | ||
| Makefile | ||
| mv_u3d_core.c | ||
| mv_u3d.h | ||
| mv_udc_core.c | ||
| mv_udc.h | ||
| net2272.c | ||
| net2272.h | ||
| net2280.c | ||
| net2280.h | ||
| omap_udc.c | ||
| omap_udc.h | ||
| pch_udc.c | ||
| pxa25x_udc.c | ||
| pxa25x_udc.h | ||
| pxa27x_udc.c | ||
| pxa27x_udc.h | ||
| r8a66597-udc.c | ||
| r8a66597-udc.h | ||
| renesas_usb3.c | ||
| s3c2410_udc.c | ||
| s3c2410_udc.h | ||
| s3c-hsudc.c | ||
| snps_udc_core.c | ||
| snps_udc_plat.c | ||
| trace.c | ||
| trace.h | ||
| udc-xilinx.c | ||