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* [PATCH 1/1] arm64: To remove initrd reserved area entry from memblock [not found] <CGME20180406045340epcas1p1ae6416dc25823212303c9109d125c018@epcas1p1.samsung.com> @ 2018-04-06 4:53 ` CHANDAN VN 2018-04-06 16:17 ` Laura Abbott [not found] ` <CGME20180430042028epcas2p24418c10ebe7b2c656cdfc31e98ed540b@epcas2p2.samsung.com> 0 siblings, 2 replies; 7+ messages in thread From: CHANDAN VN @ 2018-04-06 4:53 UTC (permalink / raw) To: catalin.marinas, will.deacon, takahiro.akashi, james.morse, robin.murphy, labbott, steve.capper, kristina.martsenko, linux-arm-kernel, linux-kernel Cc: cpgs, chandan.vn, vn.chandan INITRD reserved area entry is not removed from memblock even though initrd reserved area is freed. After freeing the memory it is released from memblock. The same can be checked from /sys/kernel/debug/memblock/reserved. The patch makes sure that the initrd entry is removed from memblock when keepinitrd is not enabled. Signed-off-by: CHANDAN VN <chandan.vn@samsung.com> --- arch/arm64/mm/init.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/arch/arm64/mm/init.c b/arch/arm64/mm/init.c index 9f3c47a..1b18b47 100644 --- a/arch/arm64/mm/init.c +++ b/arch/arm64/mm/init.c @@ -646,8 +646,10 @@ void free_initmem(void) void __init free_initrd_mem(unsigned long start, unsigned long end) { - if (!keep_initrd) + if (!keep_initrd) { free_reserved_area((void *)start, (void *)end, 0, "initrd"); + memblock_free(__virt_to_phys(start), end - start); + } } static int __init keepinitrd_setup(char *__unused) -- 1.9.1 ^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: [PATCH 1/1] arm64: To remove initrd reserved area entry from memblock 2018-04-06 4:53 ` [PATCH 1/1] arm64: To remove initrd reserved area entry from memblock CHANDAN VN @ 2018-04-06 16:17 ` Laura Abbott 2018-04-07 4:28 ` Chandan Vn [not found] ` <CGME20180430042028epcas2p24418c10ebe7b2c656cdfc31e98ed540b@epcas2p2.samsung.com> 1 sibling, 1 reply; 7+ messages in thread From: Laura Abbott @ 2018-04-06 16:17 UTC (permalink / raw) To: CHANDAN VN, catalin.marinas, will.deacon, takahiro.akashi, james.morse, robin.murphy, steve.capper, kristina.martsenko, linux-arm-kernel, linux-kernel Cc: cpgs, vn.chandan On 04/05/2018 09:53 PM, CHANDAN VN wrote: > INITRD reserved area entry is not removed from memblock > even though initrd reserved area is freed. After freeing > the memory it is released from memblock. The same can be > checked from /sys/kernel/debug/memblock/reserved. > > The patch makes sure that the initrd entry is removed from > memblock when keepinitrd is not enabled. > Does this have an impact on anything besides accounting in memblock? > Signed-off-by: CHANDAN VN <chandan.vn@samsung.com> > --- > arch/arm64/mm/init.c | 4 +++- > 1 file changed, 3 insertions(+), 1 deletion(-) > > diff --git a/arch/arm64/mm/init.c b/arch/arm64/mm/init.c > index 9f3c47a..1b18b47 100644 > --- a/arch/arm64/mm/init.c > +++ b/arch/arm64/mm/init.c > @@ -646,8 +646,10 @@ void free_initmem(void) > > void __init free_initrd_mem(unsigned long start, unsigned long end) > { > - if (!keep_initrd) > + if (!keep_initrd) { > free_reserved_area((void *)start, (void *)end, 0, "initrd"); > + memblock_free(__virt_to_phys(start), end - start); > + } > } > > static int __init keepinitrd_setup(char *__unused) > ^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: [PATCH 1/1] arm64: To remove initrd reserved area entry from memblock 2018-04-06 16:17 ` Laura Abbott @ 2018-04-07 4:28 ` Chandan Vn 2018-04-23 5:00 ` Chandan Vn 0 siblings, 1 reply; 7+ messages in thread From: Chandan Vn @ 2018-04-07 4:28 UTC (permalink / raw) To: Laura Abbott Cc: CHANDAN VN, catalin.marinas, will.deacon, takahiro.akashi, james.morse, robin.murphy, steve.capper, kristina.martsenko, linux-arm-kernel, linux-kernel, cpgs On Fri, Apr 6, 2018 at 9:47 PM, Laura Abbott <labbott@redhat.com> wrote: > Does this have an impact on anything besides accounting > in memblock? Yes, the impact is only on accounting or debugging. We were trying to reduce the reserved memory by removing initrd reserved area. After disabling "keepinitrd", only way to check if it was removed or not was to check /sys/kernel/debug/memblock/reserved. We found the entry to be present irrespective of "keepinitrd" being enabled/disabled. I hope that with the fix others wont face similar issue. Also we did not find any such problem with ARM32 ARCHITECTURE. On Fri, Apr 6, 2018 at 9:47 PM, Laura Abbott <labbott@redhat.com> wrote: > On 04/05/2018 09:53 PM, CHANDAN VN wrote: >> >> INITRD reserved area entry is not removed from memblock >> even though initrd reserved area is freed. After freeing >> the memory it is released from memblock. The same can be >> checked from /sys/kernel/debug/memblock/reserved. >> >> The patch makes sure that the initrd entry is removed from >> memblock when keepinitrd is not enabled. >> > > Does this have an impact on anything besides accounting > in memblock? > > >> Signed-off-by: CHANDAN VN <chandan.vn@samsung.com> >> --- >> arch/arm64/mm/init.c | 4 +++- >> 1 file changed, 3 insertions(+), 1 deletion(-) >> >> diff --git a/arch/arm64/mm/init.c b/arch/arm64/mm/init.c >> index 9f3c47a..1b18b47 100644 >> --- a/arch/arm64/mm/init.c >> +++ b/arch/arm64/mm/init.c >> @@ -646,8 +646,10 @@ void free_initmem(void) >> void __init free_initrd_mem(unsigned long start, unsigned long end) >> { >> - if (!keep_initrd) >> + if (!keep_initrd) { >> free_reserved_area((void *)start, (void *)end, 0, >> "initrd"); >> + memblock_free(__virt_to_phys(start), end - start); >> + } >> } >> static int __init keepinitrd_setup(char *__unused) >> > ^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: [PATCH 1/1] arm64: To remove initrd reserved area entry from memblock 2018-04-07 4:28 ` Chandan Vn @ 2018-04-23 5:00 ` Chandan Vn 2018-04-27 16:55 ` Will Deacon 0 siblings, 1 reply; 7+ messages in thread From: Chandan Vn @ 2018-04-23 5:00 UTC (permalink / raw) To: Laura Abbott Cc: CHANDAN VN, catalin.marinas, will.deacon, Takahiro Akashi, james.morse, robin.murphy, steve.capper, kristina.martsenko, linux-arm-kernel, linux-kernel, cpgs Hi, May I know when this patch would be taken for merging? On Sat, Apr 7, 2018 at 9:58 AM, Chandan Vn <vn.chandan@gmail.com> wrote: > On Fri, Apr 6, 2018 at 9:47 PM, Laura Abbott <labbott@redhat.com> wrote: >> Does this have an impact on anything besides accounting >> in memblock? > > Yes, the impact is only on accounting or debugging. > > We were trying to reduce the reserved memory by removing initrd reserved area. > After disabling "keepinitrd", only way to check if it was removed or > not was to check > /sys/kernel/debug/memblock/reserved. We found the entry to be present > irrespective of > "keepinitrd" being enabled/disabled. > I hope that with the fix others wont face similar issue. Also we did > not find any such problem > with ARM32 ARCHITECTURE. > > On Fri, Apr 6, 2018 at 9:47 PM, Laura Abbott <labbott@redhat.com> wrote: >> On 04/05/2018 09:53 PM, CHANDAN VN wrote: >>> >>> INITRD reserved area entry is not removed from memblock >>> even though initrd reserved area is freed. After freeing >>> the memory it is released from memblock. The same can be >>> checked from /sys/kernel/debug/memblock/reserved. >>> >>> The patch makes sure that the initrd entry is removed from >>> memblock when keepinitrd is not enabled. >>> >> >> Does this have an impact on anything besides accounting >> in memblock? >> >> >>> Signed-off-by: CHANDAN VN <chandan.vn@samsung.com> >>> --- >>> arch/arm64/mm/init.c | 4 +++- >>> 1 file changed, 3 insertions(+), 1 deletion(-) >>> >>> diff --git a/arch/arm64/mm/init.c b/arch/arm64/mm/init.c >>> index 9f3c47a..1b18b47 100644 >>> --- a/arch/arm64/mm/init.c >>> +++ b/arch/arm64/mm/init.c >>> @@ -646,8 +646,10 @@ void free_initmem(void) >>> void __init free_initrd_mem(unsigned long start, unsigned long end) >>> { >>> - if (!keep_initrd) >>> + if (!keep_initrd) { >>> free_reserved_area((void *)start, (void *)end, 0, >>> "initrd"); >>> + memblock_free(__virt_to_phys(start), end - start); >>> + } >>> } >>> static int __init keepinitrd_setup(char *__unused) >>> >> ^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: [PATCH 1/1] arm64: To remove initrd reserved area entry from memblock 2018-04-23 5:00 ` Chandan Vn @ 2018-04-27 16:55 ` Will Deacon 0 siblings, 0 replies; 7+ messages in thread From: Will Deacon @ 2018-04-27 16:55 UTC (permalink / raw) To: Chandan Vn Cc: Laura Abbott, CHANDAN VN, catalin.marinas, Takahiro Akashi, james.morse, robin.murphy, steve.capper, kristina.martsenko, linux-arm-kernel, linux-kernel, cpgs On Mon, Apr 23, 2018 at 10:30:49AM +0530, Chandan Vn wrote: > May I know when this patch would be taken for merging? Please can you send a new version, stating in the commit message that this only affects accountinga and debugging, rather than plugging an actual memory leak? Cheers, Will ^ permalink raw reply [flat|nested] 7+ messages in thread
[parent not found: <CGME20180430042028epcas2p24418c10ebe7b2c656cdfc31e98ed540b@epcas2p2.samsung.com>]
* [PATCHv2 1/1] arm64: To remove initrd reserved area entry from memblock [not found] ` <CGME20180430042028epcas2p24418c10ebe7b2c656cdfc31e98ed540b@epcas2p2.samsung.com> @ 2018-04-30 4:20 ` CHANDAN VN 2018-04-30 17:21 ` Laura Abbott 0 siblings, 1 reply; 7+ messages in thread From: CHANDAN VN @ 2018-04-30 4:20 UTC (permalink / raw) To: catalin.marinas, will.deacon, takahiro.akashi, james.morse, robin.murphy, labbott, steve.capper, kristina.martsenko, linux-arm-kernel, linux-kernel Cc: cpgs, chandan.vn, vn.chandan INITRD reserved area entry is not removed from memblock even though initrd reserved area is freed. After freeing the memory it is released from memblock. The same can be checked from /sys/kernel/debug/memblock/reserved. The patch makes sure that the initrd entry is removed from memblock when keepinitrd is not enabled. The patch only affects accounting and debugging. This does not fix any memory leak. Signed-off-by: CHANDAN VN <chandan.vn@samsung.com> --- arch/arm64/mm/init.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/arch/arm64/mm/init.c b/arch/arm64/mm/init.c index 9f3c47a..1b18b47 100644 --- a/arch/arm64/mm/init.c +++ b/arch/arm64/mm/init.c @@ -646,8 +646,10 @@ void free_initmem(void) void __init free_initrd_mem(unsigned long start, unsigned long end) { - if (!keep_initrd) + if (!keep_initrd) { free_reserved_area((void *)start, (void *)end, 0, "initrd"); + memblock_free(__virt_to_phys(start), end - start); + } } static int __init keepinitrd_setup(char *__unused) -- 1.9.1 ^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: [PATCHv2 1/1] arm64: To remove initrd reserved area entry from memblock 2018-04-30 4:20 ` [PATCHv2 " CHANDAN VN @ 2018-04-30 17:21 ` Laura Abbott 0 siblings, 0 replies; 7+ messages in thread From: Laura Abbott @ 2018-04-30 17:21 UTC (permalink / raw) To: CHANDAN VN, catalin.marinas, will.deacon, takahiro.akashi, james.morse, robin.murphy, steve.capper, kristina.martsenko, linux-arm-kernel, linux-kernel Cc: cpgs, vn.chandan On 04/29/2018 09:20 PM, CHANDAN VN wrote: > INITRD reserved area entry is not removed from memblock > even though initrd reserved area is freed. After freeing > the memory it is released from memblock. The same can be > checked from /sys/kernel/debug/memblock/reserved. > > The patch makes sure that the initrd entry is removed from > memblock when keepinitrd is not enabled. > > The patch only affects accounting and debugging. This does not > fix any memory leak. > > Signed-off-by: CHANDAN VN <chandan.vn@samsung.com> > --- > arch/arm64/mm/init.c | 4 +++- > 1 file changed, 3 insertions(+), 1 deletion(-) > > diff --git a/arch/arm64/mm/init.c b/arch/arm64/mm/init.c > index 9f3c47a..1b18b47 100644 > --- a/arch/arm64/mm/init.c > +++ b/arch/arm64/mm/init.c > @@ -646,8 +646,10 @@ void free_initmem(void) > > void __init free_initrd_mem(unsigned long start, unsigned long end) > { > - if (!keep_initrd) > + if (!keep_initrd) { > free_reserved_area((void *)start, (void *)end, 0, "initrd"); > + memblock_free(__virt_to_phys(start), end - start); > + } > } > > static int __init keepinitrd_setup(char *__unused) > Acked-by: Laura Abbott <labbott@redhat.com> ^ permalink raw reply [flat|nested] 7+ messages in thread
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2018-04-06 4:53 ` [PATCH 1/1] arm64: To remove initrd reserved area entry from memblock CHANDAN VN
2018-04-06 16:17 ` Laura Abbott
2018-04-07 4:28 ` Chandan Vn
2018-04-23 5:00 ` Chandan Vn
2018-04-27 16:55 ` Will Deacon
[not found] ` <CGME20180430042028epcas2p24418c10ebe7b2c656cdfc31e98ed540b@epcas2p2.samsung.com>
2018-04-30 4:20 ` [PATCHv2 " CHANDAN VN
2018-04-30 17:21 ` Laura Abbott
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